--- /dev/null
+/*
+ * cfa_coef_table.h
+ *
+ * TI OMAP3 ISP - CFA coefficients table
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+244, 0, 247, 0, 12, 27, 36, 247, 250, 0, 27, 0, 4, 250, 12, 244,
+248, 0, 0, 0, 0, 40, 0, 0, 244, 12, 250, 4, 0, 27, 0, 250,
+247, 36, 27, 12, 0, 247, 0, 244, 0, 0, 40, 0, 0, 0, 0, 248,
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+ 0, 0, 0, 248, 0, 0, 40, 0, 4, 250, 12, 244, 250, 0, 27, 0,
+ 12, 27, 36, 247, 244, 0, 247, 0, 0, 40, 0, 0, 248, 0, 0, 0,
+ 0, 247, 0, 244, 247, 36, 27, 12, 0, 27, 0, 250, 244, 12, 250, 4,
+ 0, 0, 0, 248, 0, 0, 40, 0, 4, 250, 12, 244, 250, 0, 27, 0,
+ 12, 27, 36, 247, 244, 0, 247, 0, 0, 40, 0, 0, 248, 0, 0, 0,
+ 0, 247, 0, 244, 247, 36, 27, 12, 0, 27, 0, 250, 244, 12, 250, 4,
+ 0, 0, 0, 248, 0, 0, 40, 0, 4, 250, 12, 244, 250, 0, 27, 0,
+ 12, 27, 36, 247, 244, 0, 247, 0, 0, 40, 0, 0, 248, 0, 0, 0,
+ 4, 250, 12, 244, 250, 0, 27, 0, 12, 27, 36, 247, 244, 0, 247, 0,
+ 0, 0, 0, 248, 0, 0, 40, 0, 0, 247, 0, 244, 247, 36, 27, 12,
+ 0, 27, 0, 250, 244, 12, 250, 4, 0, 40, 0, 0, 248, 0, 0, 0,
+ 4, 250, 12, 244, 250, 0, 27, 0, 12, 27, 36, 247, 244, 0, 247, 0,
+ 0, 0, 0, 248, 0, 0, 40, 0, 0, 247, 0, 244, 247, 36, 27, 12,
+ 0, 27, 0, 250, 244, 12, 250, 4, 0, 40, 0, 0, 248, 0, 0, 0,
+ 4, 250, 12, 244, 250, 0, 27, 0, 12, 27, 36, 247, 244, 0, 247, 0,
+ 0, 0, 0, 248, 0, 0, 40, 0, 0, 247, 0, 244, 247, 36, 27, 12,
+ 0, 27, 0, 250, 244, 12, 250, 4, 0, 40, 0, 0, 248, 0, 0, 0,
+244, 12, 250, 4, 0, 27, 0, 250, 247, 36, 27, 12, 0, 247, 0, 244,
+248, 0, 0, 0, 0, 40, 0, 0, 244, 0, 247, 0, 12, 27, 36, 247,
+250, 0, 27, 0, 4, 250, 12, 244, 0, 0, 40, 0, 0, 0, 0, 248,
+244, 12, 250, 4, 0, 27, 0, 250, 247, 36, 27, 12, 0, 247, 0, 244,
+248, 0, 0, 0, 0, 40, 0, 0, 244, 0, 247, 0, 12, 27, 36, 247,
+250, 0, 27, 0, 4, 250, 12, 244, 0, 0, 40, 0, 0, 0, 0, 248,
+244, 12, 250, 4, 0, 27, 0, 250, 247, 36, 27, 12, 0, 247, 0, 244,
+248, 0, 0, 0, 0, 40, 0, 0, 244, 0, 247, 0, 12, 27, 36, 247,
+250, 0, 27, 0, 4, 250, 12, 244, 0, 0, 40, 0, 0, 0, 0, 248
--- /dev/null
+/*
+ * gamma_table.h
+ *
+ * TI OMAP3 ISP - Default gamma table for all components
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+ 0, 0, 1, 2, 3, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20,
+ 22, 23, 25, 26, 28, 29, 31, 32, 34, 35, 36, 37, 39, 40, 41, 42,
+ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, 54, 55, 56, 57,
+ 58, 59, 60, 61, 62, 63, 63, 64, 65, 66, 66, 67, 68, 69, 69, 70,
+ 71, 72, 72, 73, 74, 75, 75, 76, 77, 78, 78, 79, 80, 81, 81, 82,
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+246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246,
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+248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248,
+248, 248, 248, 248, 248, 248, 249, 249, 249, 249, 250, 250, 250, 250, 250, 250,
+250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250,
+250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250,
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+252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252,
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+252, 252, 252, 252, 252, 252, 252, 252, 253, 253, 253, 253, 253, 253, 253, 253,
+253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253,
+253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253,
+253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253,
+253, 254, 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
--- /dev/null
+/*
+ * ispccdc.c
+ *
+ * TI OMAP3 ISP - CCDC module
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <media/v4l2-event.h>
+
+#include "isp.h"
+#include "ispreg.h"
+#include "ispccdc.h"
+
+static struct v4l2_mbus_framefmt *
+__ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
+ unsigned int pad, enum v4l2_subdev_format_whence which);
+
+static const unsigned int ccdc_fmts[] = {
+ V4L2_MBUS_FMT_Y8_1X8,
+ V4L2_MBUS_FMT_SGRBG10_1X10,
+ V4L2_MBUS_FMT_SRGGB10_1X10,
+ V4L2_MBUS_FMT_SBGGR10_1X10,
+ V4L2_MBUS_FMT_SGBRG10_1X10,
+ V4L2_MBUS_FMT_SGRBG12_1X12,
+ V4L2_MBUS_FMT_SRGGB12_1X12,
+ V4L2_MBUS_FMT_SBGGR12_1X12,
+ V4L2_MBUS_FMT_SGBRG12_1X12,
+};
+
+/*
+ * ccdc_print_status - Print current CCDC Module register values.
+ * @ccdc: Pointer to ISP CCDC device.
+ *
+ * Also prints other debug information stored in the CCDC module.
+ */
+#define CCDC_PRINT_REGISTER(isp, name)\
+ dev_dbg(isp->dev, "###CCDC " #name "=0x%08x\n", \
+ isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_##name))
+
+static void ccdc_print_status(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ dev_dbg(isp->dev, "-------------CCDC Register dump-------------\n");
+
+ CCDC_PRINT_REGISTER(isp, PCR);
+ CCDC_PRINT_REGISTER(isp, SYN_MODE);
+ CCDC_PRINT_REGISTER(isp, HD_VD_WID);
+ CCDC_PRINT_REGISTER(isp, PIX_LINES);
+ CCDC_PRINT_REGISTER(isp, HORZ_INFO);
+ CCDC_PRINT_REGISTER(isp, VERT_START);
+ CCDC_PRINT_REGISTER(isp, VERT_LINES);
+ CCDC_PRINT_REGISTER(isp, CULLING);
+ CCDC_PRINT_REGISTER(isp, HSIZE_OFF);
+ CCDC_PRINT_REGISTER(isp, SDOFST);
+ CCDC_PRINT_REGISTER(isp, SDR_ADDR);
+ CCDC_PRINT_REGISTER(isp, CLAMP);
+ CCDC_PRINT_REGISTER(isp, DCSUB);
+ CCDC_PRINT_REGISTER(isp, COLPTN);
+ CCDC_PRINT_REGISTER(isp, BLKCMP);
+ CCDC_PRINT_REGISTER(isp, FPC);
+ CCDC_PRINT_REGISTER(isp, FPC_ADDR);
+ CCDC_PRINT_REGISTER(isp, VDINT);
+ CCDC_PRINT_REGISTER(isp, ALAW);
+ CCDC_PRINT_REGISTER(isp, REC656IF);
+ CCDC_PRINT_REGISTER(isp, CFG);
+ CCDC_PRINT_REGISTER(isp, FMTCFG);
+ CCDC_PRINT_REGISTER(isp, FMT_HORZ);
+ CCDC_PRINT_REGISTER(isp, FMT_VERT);
+ CCDC_PRINT_REGISTER(isp, PRGEVEN0);
+ CCDC_PRINT_REGISTER(isp, PRGEVEN1);
+ CCDC_PRINT_REGISTER(isp, PRGODD0);
+ CCDC_PRINT_REGISTER(isp, PRGODD1);
+ CCDC_PRINT_REGISTER(isp, VP_OUT);
+ CCDC_PRINT_REGISTER(isp, LSC_CONFIG);
+ CCDC_PRINT_REGISTER(isp, LSC_INITIAL);
+ CCDC_PRINT_REGISTER(isp, LSC_TABLE_BASE);
+ CCDC_PRINT_REGISTER(isp, LSC_TABLE_OFFSET);
+
+ dev_dbg(isp->dev, "--------------------------------------------\n");
+}
+
+/*
+ * omap3isp_ccdc_busy - Get busy state of the CCDC.
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+int omap3isp_ccdc_busy(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR) &
+ ISPCCDC_PCR_BUSY;
+}
+
+/* -----------------------------------------------------------------------------
+ * Lens Shading Compensation
+ */
+
+/*
+ * ccdc_lsc_validate_config - Check that LSC configuration is valid.
+ * @ccdc: Pointer to ISP CCDC device.
+ * @lsc_cfg: the LSC configuration to check.
+ *
+ * Returns 0 if the LSC configuration is valid, or -EINVAL if invalid.
+ */
+static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc,
+ struct omap3isp_ccdc_lsc_config *lsc_cfg)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ struct v4l2_mbus_framefmt *format;
+ unsigned int paxel_width, paxel_height;
+ unsigned int paxel_shift_x, paxel_shift_y;
+ unsigned int min_width, min_height, min_size;
+ unsigned int input_width, input_height;
+
+ paxel_shift_x = lsc_cfg->gain_mode_m;
+ paxel_shift_y = lsc_cfg->gain_mode_n;
+
+ if ((paxel_shift_x < 2) || (paxel_shift_x > 6) ||
+ (paxel_shift_y < 2) || (paxel_shift_y > 6)) {
+ dev_dbg(isp->dev, "CCDC: LSC: Invalid paxel size\n");
+ return -EINVAL;
+ }
+
+ if (lsc_cfg->offset & 3) {
+ dev_dbg(isp->dev, "CCDC: LSC: Offset must be a multiple of "
+ "4\n");
+ return -EINVAL;
+ }
+
+ if ((lsc_cfg->initial_x & 1) || (lsc_cfg->initial_y & 1)) {
+ dev_dbg(isp->dev, "CCDC: LSC: initial_x and y must be even\n");
+ return -EINVAL;
+ }
+
+ format = __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK,
+ V4L2_SUBDEV_FORMAT_ACTIVE);
+ input_width = format->width;
+ input_height = format->height;
+
+ /* Calculate minimum bytesize for validation */
+ paxel_width = 1 << paxel_shift_x;
+ min_width = ((input_width + lsc_cfg->initial_x + paxel_width - 1)
+ >> paxel_shift_x) + 1;
+
+ paxel_height = 1 << paxel_shift_y;
+ min_height = ((input_height + lsc_cfg->initial_y + paxel_height - 1)
+ >> paxel_shift_y) + 1;
+
+ min_size = 4 * min_width * min_height;
+ if (min_size > lsc_cfg->size) {
+ dev_dbg(isp->dev, "CCDC: LSC: too small table\n");
+ return -EINVAL;
+ }
+ if (lsc_cfg->offset < (min_width * 4)) {
+ dev_dbg(isp->dev, "CCDC: LSC: Offset is too small\n");
+ return -EINVAL;
+ }
+ if ((lsc_cfg->size / lsc_cfg->offset) < min_height) {
+ dev_dbg(isp->dev, "CCDC: LSC: Wrong size/offset combination\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * ccdc_lsc_program_table - Program Lens Shading Compensation table address.
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, u32 addr)
+{
+ isp_reg_writel(to_isp_device(ccdc), addr,
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE);
+}
+
+/*
+ * ccdc_lsc_setup_regs - Configures the lens shading compensation module
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_lsc_setup_regs(struct isp_ccdc_device *ccdc,
+ struct omap3isp_ccdc_lsc_config *cfg)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ int reg;
+
+ isp_reg_writel(isp, cfg->offset, OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_LSC_TABLE_OFFSET);
+
+ reg = 0;
+ reg |= cfg->gain_mode_n << ISPCCDC_LSC_GAIN_MODE_N_SHIFT;
+ reg |= cfg->gain_mode_m << ISPCCDC_LSC_GAIN_MODE_M_SHIFT;
+ reg |= cfg->gain_format << ISPCCDC_LSC_GAIN_FORMAT_SHIFT;
+ isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG);
+
+ reg = 0;
+ reg &= ~ISPCCDC_LSC_INITIAL_X_MASK;
+ reg |= cfg->initial_x << ISPCCDC_LSC_INITIAL_X_SHIFT;
+ reg &= ~ISPCCDC_LSC_INITIAL_Y_MASK;
+ reg |= cfg->initial_y << ISPCCDC_LSC_INITIAL_Y_SHIFT;
+ isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_LSC_INITIAL);
+}
+
+static int ccdc_lsc_wait_prefetch(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ unsigned int wait;
+
+ isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ,
+ OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
+
+ /* timeout 1 ms */
+ for (wait = 0; wait < 1000; wait++) {
+ if (isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS) &
+ IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ) {
+ isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ,
+ OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
+ return 0;
+ }
+
+ rmb();
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+/*
+ * __ccdc_lsc_enable - Enables/Disables the Lens Shading Compensation module.
+ * @ccdc: Pointer to ISP CCDC device.
+ * @enable: 0 Disables LSC, 1 Enables LSC.
+ */
+static int __ccdc_lsc_enable(struct isp_ccdc_device *ccdc, int enable)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ const struct v4l2_mbus_framefmt *format =
+ __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK,
+ V4L2_SUBDEV_FORMAT_ACTIVE);
+
+ if ((format->code != V4L2_MBUS_FMT_SGRBG10_1X10) &&
+ (format->code != V4L2_MBUS_FMT_SRGGB10_1X10) &&
+ (format->code != V4L2_MBUS_FMT_SBGGR10_1X10) &&
+ (format->code != V4L2_MBUS_FMT_SGBRG10_1X10))
+ return -EINVAL;
+
+ if (enable)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_LSC_READ);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG,
+ ISPCCDC_LSC_ENABLE, enable ? ISPCCDC_LSC_ENABLE : 0);
+
+ if (enable) {
+ if (ccdc_lsc_wait_prefetch(ccdc) < 0) {
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_LSC_CONFIG, ISPCCDC_LSC_ENABLE);
+ ccdc->lsc.state = LSC_STATE_STOPPED;
+ dev_warn(to_device(ccdc), "LSC prefecth timeout\n");
+ return -ETIMEDOUT;
+ }
+ ccdc->lsc.state = LSC_STATE_RUNNING;
+ } else {
+ ccdc->lsc.state = LSC_STATE_STOPPING;
+ }
+
+ return 0;
+}
+
+static int ccdc_lsc_busy(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG) &
+ ISPCCDC_LSC_BUSY;
+}
+
+/* __ccdc_lsc_configure - Apply a new configuration to the LSC engine
+ * @ccdc: Pointer to ISP CCDC device
+ * @req: New configuration request
+ *
+ * context: in_interrupt()
+ */
+static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc,
+ struct ispccdc_lsc_config_req *req)
+{
+ if (!req->enable)
+ return -EINVAL;
+
+ if (ccdc_lsc_validate_config(ccdc, &req->config) < 0) {
+ dev_dbg(to_device(ccdc), "Discard LSC configuration\n");
+ return -EINVAL;
+ }
+
+ if (ccdc_lsc_busy(ccdc))
+ return -EBUSY;
+
+ ccdc_lsc_setup_regs(ccdc, &req->config);
+ ccdc_lsc_program_table(ccdc, req->table);
+ return 0;
+}
+
+/*
+ * ccdc_lsc_error_handler - Handle LSC prefetch error scenario.
+ * @ccdc: Pointer to ISP CCDC device.
+ *
+ * Disables LSC, and defers enablement to shadow registers update time.
+ */
+static void ccdc_lsc_error_handler(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ /*
+ * From OMAP3 TRM: When this event is pending, the module
+ * goes into transparent mode (output =input). Normal
+ * operation can be resumed at the start of the next frame
+ * after:
+ * 1) Clearing this event
+ * 2) Disabling the LSC module
+ * 3) Enabling it
+ */
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG,
+ ISPCCDC_LSC_ENABLE);
+ ccdc->lsc.state = LSC_STATE_STOPPED;
+}
+
+static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc,
+ struct ispccdc_lsc_config_req *req)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ if (req == NULL)
+ return;
+
+ if (req->iovm)
+ dma_unmap_sg(isp->dev, req->iovm->sgt->sgl,
+ req->iovm->sgt->nents, DMA_TO_DEVICE);
+ if (req->table)
+ iommu_vfree(isp->iommu, req->table);
+ kfree(req);
+}
+
+static void ccdc_lsc_free_queue(struct isp_ccdc_device *ccdc,
+ struct list_head *queue)
+{
+ struct ispccdc_lsc_config_req *req, *n;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+ list_for_each_entry_safe(req, n, queue, list) {
+ list_del(&req->list);
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+ ccdc_lsc_free_request(ccdc, req);
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+ }
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+}
+
+static void ccdc_lsc_free_table_work(struct work_struct *work)
+{
+ struct isp_ccdc_device *ccdc;
+ struct ispccdc_lsc *lsc;
+
+ lsc = container_of(work, struct ispccdc_lsc, table_work);
+ ccdc = container_of(lsc, struct isp_ccdc_device, lsc);
+
+ ccdc_lsc_free_queue(ccdc, &lsc->free_queue);
+}
+
+/*
+ * ccdc_lsc_config - Configure the LSC module from a userspace request
+ *
+ * Store the request LSC configuration in the LSC engine request pointer. The
+ * configuration will be applied to the hardware when the CCDC will be enabled,
+ * or at the next LSC interrupt if the CCDC is already running.
+ */
+static int ccdc_lsc_config(struct isp_ccdc_device *ccdc,
+ struct omap3isp_ccdc_update_config *config)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ struct ispccdc_lsc_config_req *req;
+ unsigned long flags;
+ void *table;
+ u16 update;
+ int ret;
+
+ update = config->update &
+ (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC);
+ if (!update)
+ return 0;
+
+ if (update != (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC)) {
+ dev_dbg(to_device(ccdc), "%s: Both LSC configuration and table "
+ "need to be supplied\n", __func__);
+ return -EINVAL;
+ }
+
+ req = kzalloc(sizeof(*req), GFP_KERNEL);
+ if (req == NULL)
+ return -ENOMEM;
+
+ if (config->flag & OMAP3ISP_CCDC_CONFIG_LSC) {
+ if (copy_from_user(&req->config, config->lsc_cfg,
+ sizeof(req->config))) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ req->enable = 1;
+
+ req->table = iommu_vmalloc(isp->iommu, 0, req->config.size,
+ IOMMU_FLAG);
+ if (IS_ERR_VALUE(req->table)) {
+ req->table = 0;
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ req->iovm = find_iovm_area(isp->iommu, req->table);
+ if (req->iovm == NULL) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ if (!dma_map_sg(isp->dev, req->iovm->sgt->sgl,
+ req->iovm->sgt->nents, DMA_TO_DEVICE)) {
+ ret = -ENOMEM;
+ req->iovm = NULL;
+ goto done;
+ }
+
+ dma_sync_sg_for_cpu(isp->dev, req->iovm->sgt->sgl,
+ req->iovm->sgt->nents, DMA_TO_DEVICE);
+
+ table = da_to_va(isp->iommu, req->table);
+ if (copy_from_user(table, config->lsc, req->config.size)) {
+ ret = -EFAULT;
+ goto done;
+ }
+
+ dma_sync_sg_for_device(isp->dev, req->iovm->sgt->sgl,
+ req->iovm->sgt->nents, DMA_TO_DEVICE);
+ }
+
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+ if (ccdc->lsc.request) {
+ list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue);
+ schedule_work(&ccdc->lsc.table_work);
+ }
+ ccdc->lsc.request = req;
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+
+ ret = 0;
+
+done:
+ if (ret < 0)
+ ccdc_lsc_free_request(ccdc, req);
+
+ return ret;
+}
+
+static inline int ccdc_lsc_is_configured(struct isp_ccdc_device *ccdc)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+ if (ccdc->lsc.active) {
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+ return 1;
+ }
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+ return 0;
+}
+
+static int ccdc_lsc_enable(struct isp_ccdc_device *ccdc)
+{
+ struct ispccdc_lsc *lsc = &ccdc->lsc;
+
+ if (lsc->state != LSC_STATE_STOPPED)
+ return -EINVAL;
+
+ if (lsc->active) {
+ list_add_tail(&lsc->active->list, &lsc->free_queue);
+ lsc->active = NULL;
+ }
+
+ if (__ccdc_lsc_configure(ccdc, lsc->request) < 0) {
+ omap3isp_sbl_disable(to_isp_device(ccdc),
+ OMAP3_ISP_SBL_CCDC_LSC_READ);
+ list_add_tail(&lsc->request->list, &lsc->free_queue);
+ lsc->request = NULL;
+ goto done;
+ }
+
+ lsc->active = lsc->request;
+ lsc->request = NULL;
+ __ccdc_lsc_enable(ccdc, 1);
+
+done:
+ if (!list_empty(&lsc->free_queue))
+ schedule_work(&lsc->table_work);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Parameters configuration
+ */
+
+/*
+ * ccdc_configure_clamp - Configure optical-black or digital clamping
+ * @ccdc: Pointer to ISP CCDC device.
+ *
+ * The CCDC performs either optical-black or digital clamp. Configure and enable
+ * the selected clamp method.
+ */
+static void ccdc_configure_clamp(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ u32 clamp;
+
+ if (ccdc->obclamp) {
+ clamp = ccdc->clamp.obgain << ISPCCDC_CLAMP_OBGAIN_SHIFT;
+ clamp |= ccdc->clamp.oblen << ISPCCDC_CLAMP_OBSLEN_SHIFT;
+ clamp |= ccdc->clamp.oblines << ISPCCDC_CLAMP_OBSLN_SHIFT;
+ clamp |= ccdc->clamp.obstpixel << ISPCCDC_CLAMP_OBST_SHIFT;
+ isp_reg_writel(isp, clamp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP);
+ } else {
+ isp_reg_writel(isp, ccdc->clamp.dcsubval,
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_DCSUB);
+ }
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP,
+ ISPCCDC_CLAMP_CLAMPEN,
+ ccdc->obclamp ? ISPCCDC_CLAMP_CLAMPEN : 0);
+}
+
+/*
+ * ccdc_configure_fpc - Configure Faulty Pixel Correction
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC, ISPCCDC_FPC_FPCEN);
+
+ if (!ccdc->fpc_en)
+ return;
+
+ isp_reg_writel(isp, ccdc->fpc.fpcaddr, OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_FPC_ADDR);
+ /* The FPNUM field must be set before enabling FPC. */
+ isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT),
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC);
+ isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT) |
+ ISPCCDC_FPC_FPCEN, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC);
+}
+
+/*
+ * ccdc_configure_black_comp - Configure Black Level Compensation.
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_configure_black_comp(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ u32 blcomp;
+
+ blcomp = ccdc->blcomp.b_mg << ISPCCDC_BLKCMP_B_MG_SHIFT;
+ blcomp |= ccdc->blcomp.gb_g << ISPCCDC_BLKCMP_GB_G_SHIFT;
+ blcomp |= ccdc->blcomp.gr_cy << ISPCCDC_BLKCMP_GR_CY_SHIFT;
+ blcomp |= ccdc->blcomp.r_ye << ISPCCDC_BLKCMP_R_YE_SHIFT;
+
+ isp_reg_writel(isp, blcomp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_BLKCMP);
+}
+
+/*
+ * ccdc_configure_lpf - Configure Low-Pass Filter (LPF).
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_configure_lpf(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE,
+ ISPCCDC_SYN_MODE_LPF,
+ ccdc->lpf ? ISPCCDC_SYN_MODE_LPF : 0);
+}
+
+/*
+ * ccdc_configure_alaw - Configure A-law compression.
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_configure_alaw(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ u32 alaw = 0;
+
+ switch (ccdc->syncif.datsz) {
+ case 8:
+ return;
+
+ case 10:
+ alaw = ISPCCDC_ALAW_GWDI_9_0;
+ break;
+ case 11:
+ alaw = ISPCCDC_ALAW_GWDI_10_1;
+ break;
+ case 12:
+ alaw = ISPCCDC_ALAW_GWDI_11_2;
+ break;
+ case 13:
+ alaw = ISPCCDC_ALAW_GWDI_12_3;
+ break;
+ }
+
+ if (ccdc->alaw)
+ alaw |= ISPCCDC_ALAW_CCDTBL;
+
+ isp_reg_writel(isp, alaw, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_ALAW);
+}
+
+/*
+ * ccdc_config_imgattr - Configure sensor image specific attributes.
+ * @ccdc: Pointer to ISP CCDC device.
+ * @colptn: Color pattern of the sensor.
+ */
+static void ccdc_config_imgattr(struct isp_ccdc_device *ccdc, u32 colptn)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_writel(isp, colptn, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_COLPTN);
+}
+
+/*
+ * ccdc_config - Set CCDC configuration from userspace
+ * @ccdc: Pointer to ISP CCDC device.
+ * @userspace_add: Structure containing CCDC configuration sent from userspace.
+ *
+ * Returns 0 if successful, -EINVAL if the pointer to the configuration
+ * structure is null, or the copy_from_user function fails to copy user space
+ * memory to kernel space memory.
+ */
+static int ccdc_config(struct isp_ccdc_device *ccdc,
+ struct omap3isp_ccdc_update_config *ccdc_struct)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ccdc->lock, flags);
+ ccdc->shadow_update = 1;
+ spin_unlock_irqrestore(&ccdc->lock, flags);
+
+ if (OMAP3ISP_CCDC_ALAW & ccdc_struct->update) {
+ ccdc->alaw = !!(OMAP3ISP_CCDC_ALAW & ccdc_struct->flag);
+ ccdc->update |= OMAP3ISP_CCDC_ALAW;
+ }
+
+ if (OMAP3ISP_CCDC_LPF & ccdc_struct->update) {
+ ccdc->lpf = !!(OMAP3ISP_CCDC_LPF & ccdc_struct->flag);
+ ccdc->update |= OMAP3ISP_CCDC_LPF;
+ }
+
+ if (OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->update) {
+ if (copy_from_user(&ccdc->clamp, ccdc_struct->bclamp,
+ sizeof(ccdc->clamp))) {
+ ccdc->shadow_update = 0;
+ return -EFAULT;
+ }
+
+ ccdc->obclamp = !!(OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->flag);
+ ccdc->update |= OMAP3ISP_CCDC_BLCLAMP;
+ }
+
+ if (OMAP3ISP_CCDC_BCOMP & ccdc_struct->update) {
+ if (copy_from_user(&ccdc->blcomp, ccdc_struct->blcomp,
+ sizeof(ccdc->blcomp))) {
+ ccdc->shadow_update = 0;
+ return -EFAULT;
+ }
+
+ ccdc->update |= OMAP3ISP_CCDC_BCOMP;
+ }
+
+ ccdc->shadow_update = 0;
+
+ if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) {
+ u32 table_old = 0;
+ u32 table_new;
+ u32 size;
+
+ if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED)
+ return -EBUSY;
+
+ ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag);
+
+ if (ccdc->fpc_en) {
+ if (copy_from_user(&ccdc->fpc, ccdc_struct->fpc,
+ sizeof(ccdc->fpc)))
+ return -EFAULT;
+
+ /*
+ * table_new must be 64-bytes aligned, but it's
+ * already done by iommu_vmalloc().
+ */
+ size = ccdc->fpc.fpnum * 4;
+ table_new = iommu_vmalloc(isp->iommu, 0, size,
+ IOMMU_FLAG);
+ if (IS_ERR_VALUE(table_new))
+ return -ENOMEM;
+
+ if (copy_from_user(da_to_va(isp->iommu, table_new),
+ (__force void __user *)
+ ccdc->fpc.fpcaddr, size)) {
+ iommu_vfree(isp->iommu, table_new);
+ return -EFAULT;
+ }
+
+ table_old = ccdc->fpc.fpcaddr;
+ ccdc->fpc.fpcaddr = table_new;
+ }
+
+ ccdc_configure_fpc(ccdc);
+ if (table_old != 0)
+ iommu_vfree(isp->iommu, table_old);
+ }
+
+ return ccdc_lsc_config(ccdc, ccdc_struct);
+}
+
+static void ccdc_apply_controls(struct isp_ccdc_device *ccdc)
+{
+ if (ccdc->update & OMAP3ISP_CCDC_ALAW) {
+ ccdc_configure_alaw(ccdc);
+ ccdc->update &= ~OMAP3ISP_CCDC_ALAW;
+ }
+
+ if (ccdc->update & OMAP3ISP_CCDC_LPF) {
+ ccdc_configure_lpf(ccdc);
+ ccdc->update &= ~OMAP3ISP_CCDC_LPF;
+ }
+
+ if (ccdc->update & OMAP3ISP_CCDC_BLCLAMP) {
+ ccdc_configure_clamp(ccdc);
+ ccdc->update &= ~OMAP3ISP_CCDC_BLCLAMP;
+ }
+
+ if (ccdc->update & OMAP3ISP_CCDC_BCOMP) {
+ ccdc_configure_black_comp(ccdc);
+ ccdc->update &= ~OMAP3ISP_CCDC_BCOMP;
+ }
+}
+
+/*
+ * omap3isp_ccdc_restore_context - Restore values of the CCDC module registers
+ * @dev: Pointer to ISP device
+ */
+void omap3isp_ccdc_restore_context(struct isp_device *isp)
+{
+ struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
+
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, ISPCCDC_CFG_VDLC);
+
+ ccdc->update = OMAP3ISP_CCDC_ALAW | OMAP3ISP_CCDC_LPF
+ | OMAP3ISP_CCDC_BLCLAMP | OMAP3ISP_CCDC_BCOMP;
+ ccdc_apply_controls(ccdc);
+ ccdc_configure_fpc(ccdc);
+}
+
+/* -----------------------------------------------------------------------------
+ * Format- and pipeline-related configuration helpers
+ */
+
+/*
+ * ccdc_config_vp - Configure the Video Port.
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_config_vp(struct isp_ccdc_device *ccdc)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
+ struct isp_device *isp = to_isp_device(ccdc);
+ unsigned long l3_ick = pipe->l3_ick;
+ unsigned int max_div = isp->revision == ISP_REVISION_15_0 ? 64 : 8;
+ unsigned int div = 0;
+ u32 fmtcfg_vp;
+
+ fmtcfg_vp = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG)
+ & ~(ISPCCDC_FMTCFG_VPIN_MASK | ISPCCDC_FMTCFG_VPIF_FRQ_MASK);
+
+ switch (ccdc->syncif.datsz) {
+ case 8:
+ case 10:
+ fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_9_0;
+ break;
+ case 11:
+ fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_10_1;
+ break;
+ case 12:
+ fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_11_2;
+ break;
+ case 13:
+ fmtcfg_vp |= ISPCCDC_FMTCFG_VPIN_12_3;
+ break;
+ };
+
+ if (pipe->input)
+ div = DIV_ROUND_UP(l3_ick, pipe->max_rate);
+ else if (ccdc->vpcfg.pixelclk)
+ div = l3_ick / ccdc->vpcfg.pixelclk;
+
+ div = clamp(div, 2U, max_div);
+ fmtcfg_vp |= (div - 2) << ISPCCDC_FMTCFG_VPIF_FRQ_SHIFT;
+
+ isp_reg_writel(isp, fmtcfg_vp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG);
+}
+
+/*
+ * ccdc_enable_vp - Enable Video Port.
+ * @ccdc: Pointer to ISP CCDC device.
+ * @enable: 0 Disables VP, 1 Enables VP
+ *
+ * This is needed for outputting image to Preview, H3A and HIST ISP submodules.
+ */
+static void ccdc_enable_vp(struct isp_ccdc_device *ccdc, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG,
+ ISPCCDC_FMTCFG_VPEN, enable ? ISPCCDC_FMTCFG_VPEN : 0);
+}
+
+/*
+ * ccdc_config_outlineoffset - Configure memory saving output line offset
+ * @ccdc: Pointer to ISP CCDC device.
+ * @offset: Address offset to start a new line. Must be twice the
+ * Output width and aligned on 32 byte boundary
+ * @oddeven: Specifies the odd/even line pattern to be chosen to store the
+ * output.
+ * @numlines: Set the value 0-3 for +1-4lines, 4-7 for -1-4lines.
+ *
+ * - Configures the output line offset when stored in memory
+ * - Sets the odd/even line pattern to store the output
+ * (EVENEVEN (1), ODDEVEN (2), EVENODD (3), ODDODD (4))
+ * - Configures the number of even and odd line fields in case of rearranging
+ * the lines.
+ */
+static void ccdc_config_outlineoffset(struct isp_ccdc_device *ccdc,
+ u32 offset, u8 oddeven, u8 numlines)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_writel(isp, offset & 0xffff,
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HSIZE_OFF);
+
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
+ ISPCCDC_SDOFST_FINV);
+
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
+ ISPCCDC_SDOFST_FOFST_4L);
+
+ switch (oddeven) {
+ case EVENEVEN:
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
+ (numlines & 0x7) << ISPCCDC_SDOFST_LOFST0_SHIFT);
+ break;
+ case ODDEVEN:
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
+ (numlines & 0x7) << ISPCCDC_SDOFST_LOFST1_SHIFT);
+ break;
+ case EVENODD:
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
+ (numlines & 0x7) << ISPCCDC_SDOFST_LOFST2_SHIFT);
+ break;
+ case ODDODD:
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST,
+ (numlines & 0x7) << ISPCCDC_SDOFST_LOFST3_SHIFT);
+ break;
+ default:
+ break;
+ }
+}
+
+/*
+ * ccdc_set_outaddr - Set memory address to save output image
+ * @ccdc: Pointer to ISP CCDC device.
+ * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary.
+ *
+ * Sets the memory address where the output will be saved.
+ */
+static void ccdc_set_outaddr(struct isp_ccdc_device *ccdc, u32 addr)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDR_ADDR);
+}
+
+/*
+ * omap3isp_ccdc_max_rate - Calculate maximum input data rate based on the input
+ * @ccdc: Pointer to ISP CCDC device.
+ * @max_rate: Maximum calculated data rate.
+ *
+ * Returns in *max_rate less value between calculated and passed
+ */
+void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
+ unsigned int *max_rate)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
+ unsigned int rate;
+
+ if (pipe == NULL)
+ return;
+
+ /*
+ * TRM says that for parallel sensors the maximum data rate
+ * should be 90% form L3/2 clock, otherwise just L3/2.
+ */
+ if (ccdc->input == CCDC_INPUT_PARALLEL)
+ rate = pipe->l3_ick / 2 * 9 / 10;
+ else
+ rate = pipe->l3_ick / 2;
+
+ *max_rate = min(*max_rate, rate);
+}
+
+/*
+ * ccdc_config_sync_if - Set CCDC sync interface configuration
+ * @ccdc: Pointer to ISP CCDC device.
+ * @syncif: Structure containing the sync parameters like field state, CCDC in
+ * master/slave mode, raw/yuv data, polarity of data, field, hs, vs
+ * signals.
+ */
+static void ccdc_config_sync_if(struct isp_ccdc_device *ccdc,
+ struct ispccdc_syncif *syncif)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ u32 syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_SYN_MODE);
+
+ syn_mode |= ISPCCDC_SYN_MODE_VDHDEN;
+
+ if (syncif->fldstat)
+ syn_mode |= ISPCCDC_SYN_MODE_FLDSTAT;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_FLDSTAT;
+
+ syn_mode &= ~ISPCCDC_SYN_MODE_DATSIZ_MASK;
+ switch (syncif->datsz) {
+ case 8:
+ syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_8;
+ break;
+ case 10:
+ syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_10;
+ break;
+ case 11:
+ syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_11;
+ break;
+ case 12:
+ syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_12;
+ break;
+ };
+
+ if (syncif->fldmode)
+ syn_mode |= ISPCCDC_SYN_MODE_FLDMODE;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_FLDMODE;
+
+ if (syncif->datapol)
+ syn_mode |= ISPCCDC_SYN_MODE_DATAPOL;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_DATAPOL;
+
+ if (syncif->fldpol)
+ syn_mode |= ISPCCDC_SYN_MODE_FLDPOL;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_FLDPOL;
+
+ if (syncif->hdpol)
+ syn_mode |= ISPCCDC_SYN_MODE_HDPOL;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_HDPOL;
+
+ if (syncif->vdpol)
+ syn_mode |= ISPCCDC_SYN_MODE_VDPOL;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_VDPOL;
+
+ if (syncif->ccdc_mastermode) {
+ syn_mode |= ISPCCDC_SYN_MODE_FLDOUT | ISPCCDC_SYN_MODE_VDHDOUT;
+ isp_reg_writel(isp,
+ syncif->hs_width << ISPCCDC_HD_VD_WID_HDW_SHIFT
+ | syncif->vs_width << ISPCCDC_HD_VD_WID_VDW_SHIFT,
+ OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_HD_VD_WID);
+
+ isp_reg_writel(isp,
+ syncif->ppln << ISPCCDC_PIX_LINES_PPLN_SHIFT
+ | syncif->hlprf << ISPCCDC_PIX_LINES_HLPRF_SHIFT,
+ OMAP3_ISP_IOMEM_CCDC,
+ ISPCCDC_PIX_LINES);
+ } else
+ syn_mode &= ~(ISPCCDC_SYN_MODE_FLDOUT |
+ ISPCCDC_SYN_MODE_VDHDOUT);
+
+ isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
+
+ if (!syncif->bt_r656_en)
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF,
+ ISPCCDC_REC656IF_R656ON);
+}
+
+/* CCDC formats descriptions */
+static const u32 ccdc_sgrbg_pattern =
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
+
+static const u32 ccdc_srggb_pattern =
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
+
+static const u32 ccdc_sbggr_pattern =
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
+
+static const u32 ccdc_sgbrg_pattern =
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC0_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC2_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC3_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC1_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC3_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC0_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC1_SHIFT |
+ ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC2_SHIFT |
+ ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC3_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC0_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC1_SHIFT |
+ ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC2_SHIFT |
+ ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC3_SHIFT;
+
+static void ccdc_configure(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+ struct isp_parallel_platform_data *pdata = NULL;
+ struct v4l2_subdev *sensor;
+ struct v4l2_mbus_framefmt *format;
+ struct media_pad *pad;
+ unsigned long flags;
+ u32 syn_mode;
+ u32 ccdc_pattern;
+
+ if (ccdc->input == CCDC_INPUT_PARALLEL) {
+ pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
+ sensor = media_entity_to_v4l2_subdev(pad->entity);
+ pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv)
+ ->bus.parallel;
+ }
+
+ omap3isp_configure_bridge(isp, ccdc->input, pdata);
+
+ ccdc->syncif.datsz = pdata ? pdata->width : 10;
+ ccdc_config_sync_if(ccdc, &ccdc->syncif);
+
+ /* CCDC_PAD_SINK */
+ format = &ccdc->formats[CCDC_PAD_SINK];
+
+ syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
+
+ /* Use the raw, unprocessed data when writing to memory. The H3A and
+ * histogram modules are still fed with lens shading corrected data.
+ */
+ syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR;
+
+ if (ccdc->output & CCDC_OUTPUT_MEMORY)
+ syn_mode |= ISPCCDC_SYN_MODE_WEN;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_WEN;
+
+ if (ccdc->output & CCDC_OUTPUT_RESIZER)
+ syn_mode |= ISPCCDC_SYN_MODE_SDR2RSZ;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ;
+
+ /* Use PACK8 mode for 1byte per pixel formats. */
+ if (omap3isp_video_format_info(format->code)->bpp <= 8)
+ syn_mode |= ISPCCDC_SYN_MODE_PACK8;
+ else
+ syn_mode &= ~ISPCCDC_SYN_MODE_PACK8;
+
+ isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE);
+
+ /* Mosaic filter */
+ switch (format->code) {
+ case V4L2_MBUS_FMT_SRGGB10_1X10:
+ case V4L2_MBUS_FMT_SRGGB12_1X12:
+ ccdc_pattern = ccdc_srggb_pattern;
+ break;
+ case V4L2_MBUS_FMT_SBGGR10_1X10:
+ case V4L2_MBUS_FMT_SBGGR12_1X12:
+ ccdc_pattern = ccdc_sbggr_pattern;
+ break;
+ case V4L2_MBUS_FMT_SGBRG10_1X10:
+ case V4L2_MBUS_FMT_SGBRG12_1X12:
+ ccdc_pattern = ccdc_sgbrg_pattern;
+ break;
+ default:
+ /* Use GRBG */
+ ccdc_pattern = ccdc_sgrbg_pattern;
+ break;
+ }
+ ccdc_config_imgattr(ccdc, ccdc_pattern);
+
+ /* Generate VD0 on the last line of the image and VD1 on the
+ * 2/3 height line.
+ */
+ isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) |
+ ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT),
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT);
+
+ /* CCDC_PAD_SOURCE_OF */
+ format = &ccdc->formats[CCDC_PAD_SOURCE_OF];
+
+ isp_reg_writel(isp, (0 << ISPCCDC_HORZ_INFO_SPH_SHIFT) |
+ ((format->width - 1) << ISPCCDC_HORZ_INFO_NPH_SHIFT),
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO);
+ isp_reg_writel(isp, 0 << ISPCCDC_VERT_START_SLV0_SHIFT,
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START);
+ isp_reg_writel(isp, (format->height - 1)
+ << ISPCCDC_VERT_LINES_NLV_SHIFT,
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES);
+
+ ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, 0, 0);
+
+ /* CCDC_PAD_SOURCE_VP */
+ format = &ccdc->formats[CCDC_PAD_SOURCE_VP];
+
+ isp_reg_writel(isp, (0 << ISPCCDC_FMT_HORZ_FMTSPH_SHIFT) |
+ (format->width << ISPCCDC_FMT_HORZ_FMTLNH_SHIFT),
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_HORZ);
+ isp_reg_writel(isp, (0 << ISPCCDC_FMT_VERT_FMTSLV_SHIFT) |
+ ((format->height + 1) << ISPCCDC_FMT_VERT_FMTLNV_SHIFT),
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_VERT);
+
+ isp_reg_writel(isp, (format->width << ISPCCDC_VP_OUT_HORZ_NUM_SHIFT) |
+ (format->height << ISPCCDC_VP_OUT_VERT_NUM_SHIFT),
+ OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VP_OUT);
+
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+ if (ccdc->lsc.request == NULL)
+ goto unlock;
+
+ WARN_ON(ccdc->lsc.active);
+
+ /* Get last good LSC configuration. If it is not supported for
+ * the current active resolution discard it.
+ */
+ if (ccdc->lsc.active == NULL &&
+ __ccdc_lsc_configure(ccdc, ccdc->lsc.request) == 0) {
+ ccdc->lsc.active = ccdc->lsc.request;
+ } else {
+ list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue);
+ schedule_work(&ccdc->lsc.table_work);
+ }
+
+ ccdc->lsc.request = NULL;
+
+unlock:
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+
+ ccdc_apply_controls(ccdc);
+}
+
+static void __ccdc_enable(struct isp_ccdc_device *ccdc, int enable)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR,
+ ISPCCDC_PCR_EN, enable ? ISPCCDC_PCR_EN : 0);
+}
+
+static int ccdc_disable(struct isp_ccdc_device *ccdc)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&ccdc->lock, flags);
+ if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS)
+ ccdc->stopping = CCDC_STOP_REQUEST;
+ spin_unlock_irqrestore(&ccdc->lock, flags);
+
+ ret = wait_event_timeout(ccdc->wait,
+ ccdc->stopping == CCDC_STOP_FINISHED,
+ msecs_to_jiffies(2000));
+ if (ret == 0) {
+ ret = -ETIMEDOUT;
+ dev_warn(to_device(ccdc), "CCDC stop timeout!\n");
+ }
+
+ omap3isp_sbl_disable(to_isp_device(ccdc), OMAP3_ISP_SBL_CCDC_LSC_READ);
+
+ mutex_lock(&ccdc->ioctl_lock);
+ ccdc_lsc_free_request(ccdc, ccdc->lsc.request);
+ ccdc->lsc.request = ccdc->lsc.active;
+ ccdc->lsc.active = NULL;
+ cancel_work_sync(&ccdc->lsc.table_work);
+ ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
+ mutex_unlock(&ccdc->ioctl_lock);
+
+ ccdc->stopping = CCDC_STOP_NOT_REQUESTED;
+
+ return ret > 0 ? 0 : ret;
+}
+
+static void ccdc_enable(struct isp_ccdc_device *ccdc)
+{
+ if (ccdc_lsc_is_configured(ccdc))
+ __ccdc_lsc_enable(ccdc, 1);
+ __ccdc_enable(ccdc, 1);
+}
+
+/* -----------------------------------------------------------------------------
+ * Interrupt handling
+ */
+
+/*
+ * ccdc_sbl_busy - Poll idle state of CCDC and related SBL memory write bits
+ * @ccdc: Pointer to ISP CCDC device.
+ *
+ * Returns zero if the CCDC is idle and the image has been written to
+ * memory, too.
+ */
+static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc)
+{
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ return omap3isp_ccdc_busy(ccdc)
+ | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) &
+ ISPSBL_CCDC_WR_0_DATA_READY)
+ | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) &
+ ISPSBL_CCDC_WR_0_DATA_READY)
+ | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) &
+ ISPSBL_CCDC_WR_0_DATA_READY)
+ | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) &
+ ISPSBL_CCDC_WR_0_DATA_READY);
+}
+
+/*
+ * ccdc_sbl_wait_idle - Wait until the CCDC and related SBL are idle
+ * @ccdc: Pointer to ISP CCDC device.
+ * @max_wait: Max retry count in us for wait for idle/busy transition.
+ */
+static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc,
+ unsigned int max_wait)
+{
+ unsigned int wait = 0;
+
+ if (max_wait == 0)
+ max_wait = 10000; /* 10 ms */
+
+ for (wait = 0; wait <= max_wait; wait++) {
+ if (!ccdc_sbl_busy(ccdc))
+ return 0;
+
+ rmb();
+ udelay(1);
+ }
+
+ return -EBUSY;
+}
+
+/* __ccdc_handle_stopping - Handle CCDC and/or LSC stopping sequence
+ * @ccdc: Pointer to ISP CCDC device.
+ * @event: Pointing which event trigger handler
+ *
+ * Return 1 when the event and stopping request combination is satisfyied,
+ * zero otherwise.
+ */
+static int __ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event)
+{
+ int rval = 0;
+
+ switch ((ccdc->stopping & 3) | event) {
+ case CCDC_STOP_REQUEST | CCDC_EVENT_VD1:
+ if (ccdc->lsc.state != LSC_STATE_STOPPED)
+ __ccdc_lsc_enable(ccdc, 0);
+ __ccdc_enable(ccdc, 0);
+ ccdc->stopping = CCDC_STOP_EXECUTED;
+ return 1;
+
+ case CCDC_STOP_EXECUTED | CCDC_EVENT_VD0:
+ ccdc->stopping |= CCDC_STOP_CCDC_FINISHED;
+ if (ccdc->lsc.state == LSC_STATE_STOPPED)
+ ccdc->stopping |= CCDC_STOP_LSC_FINISHED;
+ rval = 1;
+ break;
+
+ case CCDC_STOP_EXECUTED | CCDC_EVENT_LSC_DONE:
+ ccdc->stopping |= CCDC_STOP_LSC_FINISHED;
+ rval = 1;
+ break;
+
+ case CCDC_STOP_EXECUTED | CCDC_EVENT_VD1:
+ return 1;
+ }
+
+ if (ccdc->stopping == CCDC_STOP_FINISHED) {
+ wake_up(&ccdc->wait);
+ rval = 1;
+ }
+
+ return rval;
+}
+
+static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc)
+{
+ struct video_device *vdev = &ccdc->subdev.devnode;
+ struct v4l2_event event;
+
+ memset(&event, 0, sizeof(event));
+ event.type = V4L2_EVENT_OMAP3ISP_HS_VS;
+
+ v4l2_event_queue(vdev, &event);
+}
+
+/*
+ * ccdc_lsc_isr - Handle LSC events
+ * @ccdc: Pointer to ISP CCDC device.
+ * @events: LSC events
+ */
+static void ccdc_lsc_isr(struct isp_ccdc_device *ccdc, u32 events)
+{
+ unsigned long flags;
+
+ if (events & IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ) {
+ ccdc_lsc_error_handler(ccdc);
+ ccdc->error = 1;
+ dev_dbg(to_device(ccdc), "lsc prefetch error\n");
+ }
+
+ if (!(events & IRQ0STATUS_CCDC_LSC_DONE_IRQ))
+ return;
+
+ /* LSC_DONE interrupt occur, there are two cases
+ * 1. stopping for reconfiguration
+ * 2. stopping because of STREAM OFF command
+ */
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+
+ if (ccdc->lsc.state == LSC_STATE_STOPPING)
+ ccdc->lsc.state = LSC_STATE_STOPPED;
+
+ if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_LSC_DONE))
+ goto done;
+
+ if (ccdc->lsc.state != LSC_STATE_RECONFIG)
+ goto done;
+
+ /* LSC is in STOPPING state, change to the new state */
+ ccdc->lsc.state = LSC_STATE_STOPPED;
+
+ /* This is an exception. Start of frame and LSC_DONE interrupt
+ * have been received on the same time. Skip this event and wait
+ * for better times.
+ */
+ if (events & IRQ0STATUS_HS_VS_IRQ)
+ goto done;
+
+ /* The LSC engine is stopped at this point. Enable it if there's a
+ * pending request.
+ */
+ if (ccdc->lsc.request == NULL)
+ goto done;
+
+ ccdc_lsc_enable(ccdc);
+
+done:
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+}
+
+static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity);
+ struct isp_device *isp = to_isp_device(ccdc);
+ struct isp_buffer *buffer;
+ int restart = 0;
+
+ /* The CCDC generates VD0 interrupts even when disabled (the datasheet
+ * doesn't explicitly state if that's supposed to happen or not, so it
+ * can be considered as a hardware bug or as a feature, but we have to
+ * deal with it anyway). Disabling the CCDC when no buffer is available
+ * would thus not be enough, we need to handle the situation explicitly.
+ */
+ if (list_empty(&ccdc->video_out.dmaqueue))
+ goto done;
+
+ /* We're in continuous mode, and memory writes were disabled due to a
+ * buffer underrun. Reenable them now that we have a buffer. The buffer
+ * address has been set in ccdc_video_queue.
+ */
+ if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && ccdc->underrun) {
+ restart = 1;
+ ccdc->underrun = 0;
+ goto done;
+ }
+
+ if (ccdc_sbl_wait_idle(ccdc, 1000)) {
+ dev_info(isp->dev, "CCDC won't become idle!\n");
+ goto done;
+ }
+
+ buffer = omap3isp_video_buffer_next(&ccdc->video_out, ccdc->error);
+ if (buffer != NULL) {
+ ccdc_set_outaddr(ccdc, buffer->isp_addr);
+ restart = 1;
+ }
+
+ pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
+
+ if (ccdc->state == ISP_PIPELINE_STREAM_SINGLESHOT &&
+ isp_pipeline_ready(pipe))
+ omap3isp_pipeline_set_stream(pipe,
+ ISP_PIPELINE_STREAM_SINGLESHOT);
+
+done:
+ ccdc->error = 0;
+ return restart;
+}
+
+/*
+ * ccdc_vd0_isr - Handle VD0 event
+ * @ccdc: Pointer to ISP CCDC device.
+ *
+ * Executes LSC deferred enablement before next frame starts.
+ */
+static void ccdc_vd0_isr(struct isp_ccdc_device *ccdc)
+{
+ unsigned long flags;
+ int restart = 0;
+
+ if (ccdc->output & CCDC_OUTPUT_MEMORY)
+ restart = ccdc_isr_buffer(ccdc);
+
+ spin_lock_irqsave(&ccdc->lock, flags);
+ if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD0)) {
+ spin_unlock_irqrestore(&ccdc->lock, flags);
+ return;
+ }
+
+ if (!ccdc->shadow_update)
+ ccdc_apply_controls(ccdc);
+ spin_unlock_irqrestore(&ccdc->lock, flags);
+
+ if (restart)
+ ccdc_enable(ccdc);
+}
+
+/*
+ * ccdc_vd1_isr - Handle VD1 event
+ * @ccdc: Pointer to ISP CCDC device.
+ */
+static void ccdc_vd1_isr(struct isp_ccdc_device *ccdc)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ccdc->lsc.req_lock, flags);
+
+ /*
+ * Depending on the CCDC pipeline state, CCDC stopping should be
+ * handled differently. In SINGLESHOT we emulate an internal CCDC
+ * stopping because the CCDC hw works only in continuous mode.
+ * When CONTINUOUS pipeline state is used and the CCDC writes it's
+ * data to memory the CCDC and LSC are stopped immediately but
+ * without change the CCDC stopping state machine. The CCDC
+ * stopping state machine should be used only when user request
+ * for stopping is received (SINGLESHOT is an exeption).
+ */
+ switch (ccdc->state) {
+ case ISP_PIPELINE_STREAM_SINGLESHOT:
+ ccdc->stopping = CCDC_STOP_REQUEST;
+ break;
+
+ case ISP_PIPELINE_STREAM_CONTINUOUS:
+ if (ccdc->output & CCDC_OUTPUT_MEMORY) {
+ if (ccdc->lsc.state != LSC_STATE_STOPPED)
+ __ccdc_lsc_enable(ccdc, 0);
+ __ccdc_enable(ccdc, 0);
+ }
+ break;
+
+ case ISP_PIPELINE_STREAM_STOPPED:
+ break;
+ }
+
+ if (__ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1))
+ goto done;
+
+ if (ccdc->lsc.request == NULL)
+ goto done;
+
+ /*
+ * LSC need to be reconfigured. Stop it here and on next LSC_DONE IRQ
+ * do the appropriate changes in registers
+ */
+ if (ccdc->lsc.state == LSC_STATE_RUNNING) {
+ __ccdc_lsc_enable(ccdc, 0);
+ ccdc->lsc.state = LSC_STATE_RECONFIG;
+ goto done;
+ }
+
+ /* LSC has been in STOPPED state, enable it */
+ if (ccdc->lsc.state == LSC_STATE_STOPPED)
+ ccdc_lsc_enable(ccdc);
+
+done:
+ spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags);
+}
+
+/*
+ * omap3isp_ccdc_isr - Configure CCDC during interframe time.
+ * @ccdc: Pointer to ISP CCDC device.
+ * @events: CCDC events
+ */
+int omap3isp_ccdc_isr(struct isp_ccdc_device *ccdc, u32 events)
+{
+ if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED)
+ return 0;
+
+ if (events & IRQ0STATUS_CCDC_VD1_IRQ)
+ ccdc_vd1_isr(ccdc);
+
+ ccdc_lsc_isr(ccdc, events);
+
+ if (events & IRQ0STATUS_CCDC_VD0_IRQ)
+ ccdc_vd0_isr(ccdc);
+
+ if (events & IRQ0STATUS_HS_VS_IRQ)
+ ccdc_hs_vs_isr(ccdc);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP video operations
+ */
+
+static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer)
+{
+ struct isp_ccdc_device *ccdc = &video->isp->isp_ccdc;
+
+ if (!(ccdc->output & CCDC_OUTPUT_MEMORY))
+ return -ENODEV;
+
+ ccdc_set_outaddr(ccdc, buffer->isp_addr);
+
+ /* We now have a buffer queued on the output, restart the pipeline in
+ * on the next CCDC interrupt if running in continuous mode (or when
+ * starting the stream).
+ */
+ ccdc->underrun = 1;
+
+ return 0;
+}
+
+static const struct isp_video_operations ccdc_video_ops = {
+ .queue = ccdc_video_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 subdev operations
+ */
+
+/*
+ * ccdc_ioctl - CCDC module private ioctl's
+ * @sd: ISP CCDC V4L2 subdevice
+ * @cmd: ioctl command
+ * @arg: ioctl argument
+ *
+ * Return 0 on success or a negative error code otherwise.
+ */
+static long ccdc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ int ret;
+
+ switch (cmd) {
+ case VIDIOC_OMAP3ISP_CCDC_CFG:
+ mutex_lock(&ccdc->ioctl_lock);
+ ret = ccdc_config(ccdc, arg);
+ mutex_unlock(&ccdc->ioctl_lock);
+ break;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+
+ return ret;
+}
+
+static int ccdc_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub)
+{
+ if (sub->type != V4L2_EVENT_OMAP3ISP_HS_VS)
+ return -EINVAL;
+
+ return v4l2_event_subscribe(fh, sub);
+}
+
+static int ccdc_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub)
+{
+ return v4l2_event_unsubscribe(fh, sub);
+}
+
+/*
+ * ccdc_set_stream - Enable/Disable streaming on the CCDC module
+ * @sd: ISP CCDC V4L2 subdevice
+ * @enable: Enable/disable stream
+ *
+ * When writing to memory, the CCDC hardware can't be enabled without a memory
+ * buffer to write to. As the s_stream operation is called in response to a
+ * STREAMON call without any buffer queued yet, just update the enabled field
+ * and return immediately. The CCDC will be enabled in ccdc_isr_buffer().
+ *
+ * When not writing to memory enable the CCDC immediately.
+ */
+static int ccdc_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ struct isp_device *isp = to_isp_device(ccdc);
+ int ret = 0;
+
+ if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) {
+ if (enable == ISP_PIPELINE_STREAM_STOPPED)
+ return 0;
+
+ omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_CCDC);
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG,
+ ISPCCDC_CFG_VDLC);
+
+ ccdc_configure(ccdc);
+
+ /* TODO: Don't configure the video port if all of its output
+ * links are inactive.
+ */
+ ccdc_config_vp(ccdc);
+ ccdc_enable_vp(ccdc, 1);
+ ccdc->error = 0;
+ ccdc_print_status(ccdc);
+ }
+
+ switch (enable) {
+ case ISP_PIPELINE_STREAM_CONTINUOUS:
+ if (ccdc->output & CCDC_OUTPUT_MEMORY)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
+
+ if (ccdc->underrun || !(ccdc->output & CCDC_OUTPUT_MEMORY))
+ ccdc_enable(ccdc);
+
+ ccdc->underrun = 0;
+ break;
+
+ case ISP_PIPELINE_STREAM_SINGLESHOT:
+ if (ccdc->output & CCDC_OUTPUT_MEMORY &&
+ ccdc->state != ISP_PIPELINE_STREAM_SINGLESHOT)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
+
+ ccdc_enable(ccdc);
+ break;
+
+ case ISP_PIPELINE_STREAM_STOPPED:
+ ret = ccdc_disable(ccdc);
+ if (ccdc->output & CCDC_OUTPUT_MEMORY)
+ omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CCDC_WRITE);
+ omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_CCDC);
+ ccdc->underrun = 0;
+ break;
+ }
+
+ ccdc->state = enable;
+ return ret;
+}
+
+static struct v4l2_mbus_framefmt *
+__ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_format(fh, pad);
+ else
+ return &ccdc->formats[pad];
+}
+
+/*
+ * ccdc_try_format - Try video format on a pad
+ * @ccdc: ISP CCDC device
+ * @fh : V4L2 subdev file handle
+ * @pad: Pad number
+ * @fmt: Format
+ */
+static void
+ccdc_try_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
+ unsigned int pad, struct v4l2_mbus_framefmt *fmt,
+ enum v4l2_subdev_format_whence which)
+{
+ struct v4l2_mbus_framefmt *format;
+ const struct isp_format_info *info;
+ unsigned int width = fmt->width;
+ unsigned int height = fmt->height;
+ unsigned int i;
+
+ switch (pad) {
+ case CCDC_PAD_SINK:
+ /* TODO: If the CCDC output formatter pad is connected directly
+ * to the resizer, only YUV formats can be used.
+ */
+ for (i = 0; i < ARRAY_SIZE(ccdc_fmts); i++) {
+ if (fmt->code == ccdc_fmts[i])
+ break;
+ }
+
+ /* If not found, use SGRBG10 as default */
+ if (i >= ARRAY_SIZE(ccdc_fmts))
+ fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
+
+ /* Clamp the input size. */
+ fmt->width = clamp_t(u32, width, 32, 4096);
+ fmt->height = clamp_t(u32, height, 32, 4096);
+ break;
+
+ case CCDC_PAD_SOURCE_OF:
+ format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which);
+ memcpy(fmt, format, sizeof(*fmt));
+
+ /* The data formatter truncates the number of horizontal output
+ * pixels to a multiple of 16. To avoid clipping data, allow
+ * callers to request an output size bigger than the input size
+ * up to the nearest multiple of 16.
+ */
+ fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
+ fmt->width &= ~15;
+ fmt->height = clamp_t(u32, height, 32, fmt->height);
+ break;
+
+ case CCDC_PAD_SOURCE_VP:
+ format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK, which);
+ memcpy(fmt, format, sizeof(*fmt));
+
+ /* The video port interface truncates the data to 10 bits. */
+ info = omap3isp_video_format_info(fmt->code);
+ fmt->code = info->truncated;
+
+ /* The number of lines that can be clocked out from the video
+ * port output must be at least one line less than the number
+ * of input lines.
+ */
+ fmt->width = clamp_t(u32, width, 32, fmt->width);
+ fmt->height = clamp_t(u32, height, 32, fmt->height - 1);
+ break;
+ }
+
+ /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
+ * stored on 2 bytes.
+ */
+ fmt->colorspace = V4L2_COLORSPACE_SRGB;
+ fmt->field = V4L2_FIELD_NONE;
+}
+
+/*
+ * ccdc_enum_mbus_code - Handle pixel format enumeration
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @code : pointer to v4l2_subdev_mbus_code_enum structure
+ * return -EINVAL or zero on success
+ */
+static int ccdc_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ switch (code->pad) {
+ case CCDC_PAD_SINK:
+ if (code->index >= ARRAY_SIZE(ccdc_fmts))
+ return -EINVAL;
+
+ code->code = ccdc_fmts[code->index];
+ break;
+
+ case CCDC_PAD_SOURCE_OF:
+ case CCDC_PAD_SOURCE_VP:
+ /* No format conversion inside CCDC */
+ if (code->index != 0)
+ return -EINVAL;
+
+ format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SINK,
+ V4L2_SUBDEV_FORMAT_TRY);
+
+ code->code = format->code;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ccdc_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt format;
+
+ if (fse->index != 0)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = 1;
+ format.height = 1;
+ ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->min_width = format.width;
+ fse->min_height = format.height;
+
+ if (format.code != fse->code)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = -1;
+ format.height = -1;
+ ccdc_try_format(ccdc, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->max_width = format.width;
+ fse->max_height = format.height;
+
+ return 0;
+}
+
+/*
+ * ccdc_get_format - Retrieve the video format on a pad
+ * @sd : ISP CCDC V4L2 subdevice
+ * @fh : V4L2 subdev file handle
+ * @fmt: Format
+ *
+ * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
+ * to the format type.
+ */
+static int ccdc_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ fmt->format = *format;
+ return 0;
+}
+
+/*
+ * ccdc_set_format - Set the video format on a pad
+ * @sd : ISP CCDC V4L2 subdevice
+ * @fh : V4L2 subdev file handle
+ * @fmt: Format
+ *
+ * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
+ * to the format type.
+ */
+static int ccdc_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __ccdc_get_format(ccdc, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ ccdc_try_format(ccdc, fh, fmt->pad, &fmt->format, fmt->which);
+ *format = fmt->format;
+
+ /* Propagate the format from sink to source */
+ if (fmt->pad == CCDC_PAD_SINK) {
+ format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_OF,
+ fmt->which);
+ *format = fmt->format;
+ ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_OF, format,
+ fmt->which);
+
+ format = __ccdc_get_format(ccdc, fh, CCDC_PAD_SOURCE_VP,
+ fmt->which);
+ *format = fmt->format;
+ ccdc_try_format(ccdc, fh, CCDC_PAD_SOURCE_VP, format,
+ fmt->which);
+ }
+
+ return 0;
+}
+
+/*
+ * ccdc_init_formats - Initialize formats on all pads
+ * @sd: ISP CCDC V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ *
+ * Initialize all pad formats with default values. If fh is not NULL, try
+ * formats are initialized on the file handle. Otherwise active formats are
+ * initialized on the device.
+ */
+static int ccdc_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_subdev_format format;
+
+ memset(&format, 0, sizeof(format));
+ format.pad = CCDC_PAD_SINK;
+ format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
+ format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
+ format.format.width = 4096;
+ format.format.height = 4096;
+ ccdc_set_format(sd, fh, &format);
+
+ return 0;
+}
+
+/* V4L2 subdev core operations */
+static const struct v4l2_subdev_core_ops ccdc_v4l2_core_ops = {
+ .ioctl = ccdc_ioctl,
+ .subscribe_event = ccdc_subscribe_event,
+ .unsubscribe_event = ccdc_unsubscribe_event,
+};
+
+/* V4L2 subdev video operations */
+static const struct v4l2_subdev_video_ops ccdc_v4l2_video_ops = {
+ .s_stream = ccdc_set_stream,
+};
+
+/* V4L2 subdev pad operations */
+static const struct v4l2_subdev_pad_ops ccdc_v4l2_pad_ops = {
+ .enum_mbus_code = ccdc_enum_mbus_code,
+ .enum_frame_size = ccdc_enum_frame_size,
+ .get_fmt = ccdc_get_format,
+ .set_fmt = ccdc_set_format,
+};
+
+/* V4L2 subdev operations */
+static const struct v4l2_subdev_ops ccdc_v4l2_ops = {
+ .core = &ccdc_v4l2_core_ops,
+ .video = &ccdc_v4l2_video_ops,
+ .pad = &ccdc_v4l2_pad_ops,
+};
+
+/* V4L2 subdev internal operations */
+static const struct v4l2_subdev_internal_ops ccdc_v4l2_internal_ops = {
+ .open = ccdc_init_formats,
+};
+
+/* -----------------------------------------------------------------------------
+ * Media entity operations
+ */
+
+/*
+ * ccdc_link_setup - Setup CCDC connections
+ * @entity: CCDC media entity
+ * @local: Pad at the local end of the link
+ * @remote: Pad at the remote end of the link
+ * @flags: Link flags
+ *
+ * return -EINVAL or zero on success
+ */
+static int ccdc_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
+ struct isp_device *isp = to_isp_device(ccdc);
+
+ switch (local->index | media_entity_type(remote->entity)) {
+ case CCDC_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* Read from the sensor (parallel interface), CCP2, CSI2a or
+ * CSI2c.
+ */
+ if (!(flags & MEDIA_LNK_FL_ENABLED)) {
+ ccdc->input = CCDC_INPUT_NONE;
+ break;
+ }
+
+ if (ccdc->input != CCDC_INPUT_NONE)
+ return -EBUSY;
+
+ if (remote->entity == &isp->isp_ccp2.subdev.entity)
+ ccdc->input = CCDC_INPUT_CCP2B;
+ else if (remote->entity == &isp->isp_csi2a.subdev.entity)
+ ccdc->input = CCDC_INPUT_CSI2A;
+ else if (remote->entity == &isp->isp_csi2c.subdev.entity)
+ ccdc->input = CCDC_INPUT_CSI2C;
+ else
+ ccdc->input = CCDC_INPUT_PARALLEL;
+
+ break;
+
+ /*
+ * The ISP core doesn't support pipelines with multiple video outputs.
+ * Revisit this when it will be implemented, and return -EBUSY for now.
+ */
+
+ case CCDC_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* Write to preview engine, histogram and H3A. When none of
+ * those links are active, the video port can be disabled.
+ */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (ccdc->output & ~CCDC_OUTPUT_PREVIEW)
+ return -EBUSY;
+ ccdc->output |= CCDC_OUTPUT_PREVIEW;
+ } else {
+ ccdc->output &= ~CCDC_OUTPUT_PREVIEW;
+ }
+ break;
+
+ case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_DEVNODE:
+ /* Write to memory */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (ccdc->output & ~CCDC_OUTPUT_MEMORY)
+ return -EBUSY;
+ ccdc->output |= CCDC_OUTPUT_MEMORY;
+ } else {
+ ccdc->output &= ~CCDC_OUTPUT_MEMORY;
+ }
+ break;
+
+ case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* Write to resizer */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (ccdc->output & ~CCDC_OUTPUT_RESIZER)
+ return -EBUSY;
+ ccdc->output |= CCDC_OUTPUT_RESIZER;
+ } else {
+ ccdc->output &= ~CCDC_OUTPUT_RESIZER;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* media operations */
+static const struct media_entity_operations ccdc_media_ops = {
+ .link_setup = ccdc_link_setup,
+};
+
+/*
+ * ccdc_init_entities - Initialize V4L2 subdev and media entity
+ * @ccdc: ISP CCDC module
+ *
+ * Return 0 on success and a negative error code on failure.
+ */
+static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
+{
+ struct v4l2_subdev *sd = &ccdc->subdev;
+ struct media_pad *pads = ccdc->pads;
+ struct media_entity *me = &sd->entity;
+ int ret;
+
+ ccdc->input = CCDC_INPUT_NONE;
+
+ v4l2_subdev_init(sd, &ccdc_v4l2_ops);
+ sd->internal_ops = &ccdc_v4l2_internal_ops;
+ strlcpy(sd->name, "OMAP3 ISP CCDC", sizeof(sd->name));
+ sd->grp_id = 1 << 16; /* group ID for isp subdevs */
+ v4l2_set_subdevdata(sd, ccdc);
+ sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
+ sd->nevents = OMAP3ISP_CCDC_NEVENTS;
+
+ pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
+ pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
+
+ me->ops = &ccdc_media_ops;
+ ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0);
+ if (ret < 0)
+ return ret;
+
+ ccdc_init_formats(sd, NULL);
+
+ ccdc->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ ccdc->video_out.ops = &ccdc_video_ops;
+ ccdc->video_out.isp = to_isp_device(ccdc);
+ ccdc->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
+ ccdc->video_out.bpl_alignment = 32;
+
+ ret = omap3isp_video_init(&ccdc->video_out, "CCDC");
+ if (ret < 0)
+ return ret;
+
+ /* Connect the CCDC subdev to the video node. */
+ ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF,
+ &ccdc->video_out.video.entity, 0, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc)
+{
+ media_entity_cleanup(&ccdc->subdev.entity);
+
+ v4l2_device_unregister_subdev(&ccdc->subdev);
+ omap3isp_video_unregister(&ccdc->video_out);
+}
+
+int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
+ struct v4l2_device *vdev)
+{
+ int ret;
+
+ /* Register the subdev and video node. */
+ ret = v4l2_device_register_subdev(vdev, &ccdc->subdev);
+ if (ret < 0)
+ goto error;
+
+ ret = omap3isp_video_register(&ccdc->video_out, vdev);
+ if (ret < 0)
+ goto error;
+
+ return 0;
+
+error:
+ omap3isp_ccdc_unregister_entities(ccdc);
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP CCDC initialisation and cleanup
+ */
+
+/*
+ * omap3isp_ccdc_init - CCDC module initialization.
+ * @dev: Device pointer specific to the OMAP3 ISP.
+ *
+ * TODO: Get the initialisation values from platform data.
+ *
+ * Return 0 on success or a negative error code otherwise.
+ */
+int omap3isp_ccdc_init(struct isp_device *isp)
+{
+ struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
+
+ spin_lock_init(&ccdc->lock);
+ init_waitqueue_head(&ccdc->wait);
+ mutex_init(&ccdc->ioctl_lock);
+
+ ccdc->stopping = CCDC_STOP_NOT_REQUESTED;
+
+ INIT_WORK(&ccdc->lsc.table_work, ccdc_lsc_free_table_work);
+ ccdc->lsc.state = LSC_STATE_STOPPED;
+ INIT_LIST_HEAD(&ccdc->lsc.free_queue);
+ spin_lock_init(&ccdc->lsc.req_lock);
+
+ ccdc->syncif.ccdc_mastermode = 0;
+ ccdc->syncif.datapol = 0;
+ ccdc->syncif.datsz = 0;
+ ccdc->syncif.fldmode = 0;
+ ccdc->syncif.fldout = 0;
+ ccdc->syncif.fldpol = 0;
+ ccdc->syncif.fldstat = 0;
+ ccdc->syncif.hdpol = 0;
+ ccdc->syncif.vdpol = 0;
+
+ ccdc->clamp.oblen = 0;
+ ccdc->clamp.dcsubval = 0;
+
+ ccdc->vpcfg.pixelclk = 0;
+
+ ccdc->update = OMAP3ISP_CCDC_BLCLAMP;
+ ccdc_apply_controls(ccdc);
+
+ return ccdc_init_entities(ccdc);
+}
+
+/*
+ * omap3isp_ccdc_cleanup - CCDC module cleanup.
+ * @dev: Device pointer specific to the OMAP3 ISP.
+ */
+void omap3isp_ccdc_cleanup(struct isp_device *isp)
+{
+ struct isp_ccdc_device *ccdc = &isp->isp_ccdc;
+
+ /* Free LSC requests. As the CCDC is stopped there's no active request,
+ * so only the pending request and the free queue need to be handled.
+ */
+ ccdc_lsc_free_request(ccdc, ccdc->lsc.request);
+ cancel_work_sync(&ccdc->lsc.table_work);
+ ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue);
+
+ if (ccdc->fpc.fpcaddr != 0)
+ iommu_vfree(isp->iommu, ccdc->fpc.fpcaddr);
+}
--- /dev/null
+/*
+ * ispccdc.h
+ *
+ * TI OMAP3 ISP - CCDC module
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef OMAP3_ISP_CCDC_H
+#define OMAP3_ISP_CCDC_H
+
+#include <linux/omap3isp.h>
+#include <linux/workqueue.h>
+
+#include "ispvideo.h"
+
+enum ccdc_input_entity {
+ CCDC_INPUT_NONE,
+ CCDC_INPUT_PARALLEL,
+ CCDC_INPUT_CSI2A,
+ CCDC_INPUT_CCP2B,
+ CCDC_INPUT_CSI2C
+};
+
+#define CCDC_OUTPUT_MEMORY (1 << 0)
+#define CCDC_OUTPUT_PREVIEW (1 << 1)
+#define CCDC_OUTPUT_RESIZER (1 << 2)
+
+#define OMAP3ISP_CCDC_NEVENTS 16
+
+/*
+ * struct ispccdc_syncif - Structure for Sync Interface between sensor and CCDC
+ * @ccdc_mastermode: Master mode. 1 - Master, 0 - Slave.
+ * @fldstat: Field state. 0 - Odd Field, 1 - Even Field.
+ * @datsz: Data size.
+ * @fldmode: 0 - Progressive, 1 - Interlaced.
+ * @datapol: 0 - Positive, 1 - Negative.
+ * @fldpol: 0 - Positive, 1 - Negative.
+ * @hdpol: 0 - Positive, 1 - Negative.
+ * @vdpol: 0 - Positive, 1 - Negative.
+ * @fldout: 0 - Input, 1 - Output.
+ * @hs_width: Width of the Horizontal Sync pulse, used for HS/VS Output.
+ * @vs_width: Width of the Vertical Sync pulse, used for HS/VS Output.
+ * @ppln: Number of pixels per line, used for HS/VS Output.
+ * @hlprf: Number of half lines per frame, used for HS/VS Output.
+ * @bt_r656_en: 1 - Enable ITU-R BT656 mode, 0 - Sync mode.
+ */
+struct ispccdc_syncif {
+ u8 ccdc_mastermode;
+ u8 fldstat;
+ u8 datsz;
+ u8 fldmode;
+ u8 datapol;
+ u8 fldpol;
+ u8 hdpol;
+ u8 vdpol;
+ u8 fldout;
+ u8 hs_width;
+ u8 vs_width;
+ u8 ppln;
+ u8 hlprf;
+ u8 bt_r656_en;
+};
+
+/*
+ * struct ispccdc_vp - Structure for Video Port parameters
+ * @pixelclk: Input pixel clock in Hz
+ */
+struct ispccdc_vp {
+ unsigned int pixelclk;
+};
+
+enum ispccdc_lsc_state {
+ LSC_STATE_STOPPED = 0,
+ LSC_STATE_STOPPING = 1,
+ LSC_STATE_RUNNING = 2,
+ LSC_STATE_RECONFIG = 3,
+};
+
+struct ispccdc_lsc_config_req {
+ struct list_head list;
+ struct omap3isp_ccdc_lsc_config config;
+ unsigned char enable;
+ u32 table;
+ struct iovm_struct *iovm;
+};
+
+/*
+ * ispccdc_lsc - CCDC LSC parameters
+ * @update_config: Set when user changes config
+ * @request_enable: Whether LSC is requested to be enabled
+ * @config: LSC config set by user
+ * @update_table: Set when user provides a new LSC table to table_new
+ * @table_new: LSC table set by user, ISP address
+ * @table_inuse: LSC table currently in use, ISP address
+ */
+struct ispccdc_lsc {
+ enum ispccdc_lsc_state state;
+ struct work_struct table_work;
+
+ /* LSC queue of configurations */
+ spinlock_t req_lock;
+ struct ispccdc_lsc_config_req *request; /* requested configuration */
+ struct ispccdc_lsc_config_req *active; /* active configuration */
+ struct list_head free_queue; /* configurations for freeing */
+};
+
+#define CCDC_STOP_NOT_REQUESTED 0x00
+#define CCDC_STOP_REQUEST 0x01
+#define CCDC_STOP_EXECUTED (0x02 | CCDC_STOP_REQUEST)
+#define CCDC_STOP_CCDC_FINISHED 0x04
+#define CCDC_STOP_LSC_FINISHED 0x08
+#define CCDC_STOP_FINISHED \
+ (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
+
+#define CCDC_EVENT_VD1 0x10
+#define CCDC_EVENT_VD0 0x20
+#define CCDC_EVENT_LSC_DONE 0x40
+
+/* Sink and source CCDC pads */
+#define CCDC_PAD_SINK 0
+#define CCDC_PAD_SOURCE_OF 1
+#define CCDC_PAD_SOURCE_VP 2
+#define CCDC_PADS_NUM 3
+
+/*
+ * struct isp_ccdc_device - Structure for the CCDC module to store its own
+ * information
+ * @subdev: V4L2 subdevice
+ * @pads: Sink and source media entity pads
+ * @formats: Active video formats
+ * @input: Active input
+ * @output: Active outputs
+ * @video_out: Output video node
+ * @error: A hardware error occured during capture
+ * @alaw: A-law compression enabled (1) or disabled (0)
+ * @lpf: Low pass filter enabled (1) or disabled (0)
+ * @obclamp: Optical-black clamp enabled (1) or disabled (0)
+ * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
+ * @blcomp: Black level compensation configuration
+ * @clamp: Optical-black or digital clamp configuration
+ * @fpc: Faulty pixels correction configuration
+ * @lsc: Lens shading compensation configuration
+ * @update: Bitmask of controls to update during the next interrupt
+ * @shadow_update: Controls update in progress by userspace
+ * @syncif: Interface synchronization configuration
+ * @vpcfg: Video port configuration
+ * @underrun: A buffer underrun occured and a new buffer has been queued
+ * @state: Streaming state
+ * @lock: Serializes shadow_update with interrupt handler
+ * @wait: Wait queue used to stop the module
+ * @stopping: Stopping state
+ * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
+ */
+struct isp_ccdc_device {
+ struct v4l2_subdev subdev;
+ struct media_pad pads[CCDC_PADS_NUM];
+ struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
+
+ enum ccdc_input_entity input;
+ unsigned int output;
+ struct isp_video video_out;
+ unsigned int error;
+
+ unsigned int alaw:1,
+ lpf:1,
+ obclamp:1,
+ fpc_en:1;
+ struct omap3isp_ccdc_blcomp blcomp;
+ struct omap3isp_ccdc_bclamp clamp;
+ struct omap3isp_ccdc_fpc fpc;
+ struct ispccdc_lsc lsc;
+ unsigned int update;
+ unsigned int shadow_update;
+
+ struct ispccdc_syncif syncif;
+ struct ispccdc_vp vpcfg;
+
+ unsigned int underrun:1;
+ enum isp_pipeline_stream_state state;
+ spinlock_t lock;
+ wait_queue_head_t wait;
+ unsigned int stopping;
+ struct mutex ioctl_lock;
+};
+
+struct isp_device;
+
+int omap3isp_ccdc_init(struct isp_device *isp);
+void omap3isp_ccdc_cleanup(struct isp_device *isp);
+int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
+ struct v4l2_device *vdev);
+void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
+
+int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
+int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
+void omap3isp_ccdc_restore_context(struct isp_device *isp);
+void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
+ unsigned int *max_rate);
+
+#endif /* OMAP3_ISP_CCDC_H */
--- /dev/null
+/*
+ * isppreview.c
+ *
+ * TI OMAP3 ISP driver - Preview module
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+
+#include "isp.h"
+#include "ispreg.h"
+#include "isppreview.h"
+
+/* Default values in Office Flourescent Light for RGBtoRGB Blending */
+static struct omap3isp_prev_rgbtorgb flr_rgb2rgb = {
+ { /* RGB-RGB Matrix */
+ {0x01E2, 0x0F30, 0x0FEE},
+ {0x0F9B, 0x01AC, 0x0FB9},
+ {0x0FE0, 0x0EC0, 0x0260}
+ }, /* RGB Offset */
+ {0x0000, 0x0000, 0x0000}
+};
+
+/* Default values in Office Flourescent Light for RGB to YUV Conversion*/
+static struct omap3isp_prev_csc flr_prev_csc = {
+ { /* CSC Coef Matrix */
+ {66, 129, 25},
+ {-38, -75, 112},
+ {112, -94 , -18}
+ }, /* CSC Offset */
+ {0x0, 0x0, 0x0}
+};
+
+/* Default values in Office Flourescent Light for CFA Gradient*/
+#define FLR_CFA_GRADTHRS_HORZ 0x28
+#define FLR_CFA_GRADTHRS_VERT 0x28
+
+/* Default values in Office Flourescent Light for Chroma Suppression*/
+#define FLR_CSUP_GAIN 0x0D
+#define FLR_CSUP_THRES 0xEB
+
+/* Default values in Office Flourescent Light for Noise Filter*/
+#define FLR_NF_STRGTH 0x03
+
+/* Default values for White Balance */
+#define FLR_WBAL_DGAIN 0x100
+#define FLR_WBAL_COEF 0x20
+
+/* Default values in Office Flourescent Light for Black Adjustment*/
+#define FLR_BLKADJ_BLUE 0x0
+#define FLR_BLKADJ_GREEN 0x0
+#define FLR_BLKADJ_RED 0x0
+
+#define DEF_DETECT_CORRECT_VAL 0xe
+
+#define PREV_MIN_WIDTH 64
+#define PREV_MIN_HEIGHT 8
+#define PREV_MAX_HEIGHT 16384
+
+/*
+ * Coeficient Tables for the submodules in Preview.
+ * Array is initialised with the values from.the tables text file.
+ */
+
+/*
+ * CFA Filter Coefficient Table
+ *
+ */
+static u32 cfa_coef_table[] = {
+#include "cfa_coef_table.h"
+};
+
+/*
+ * Default Gamma Correction Table - All components
+ */
+static u32 gamma_table[] = {
+#include "gamma_table.h"
+};
+
+/*
+ * Noise Filter Threshold table
+ */
+static u32 noise_filter_table[] = {
+#include "noise_filter_table.h"
+};
+
+/*
+ * Luminance Enhancement Table
+ */
+static u32 luma_enhance_table[] = {
+#include "luma_enhance_table.h"
+};
+
+/*
+ * preview_enable_invalaw - Enable/Disable Inverse A-Law module in Preview.
+ * @enable: 1 - Reverse the A-Law done in CCDC.
+ */
+static void
+preview_enable_invalaw(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_WIDTH | ISPPRV_PCR_INVALAW);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_WIDTH | ISPPRV_PCR_INVALAW);
+}
+
+/*
+ * preview_enable_drkframe_capture - Enable/Disable of the darkframe capture.
+ * @prev -
+ * @enable: 1 - Enable, 0 - Disable
+ *
+ * NOTE: PRV_WSDR_ADDR and PRV_WADD_OFFSET must be set also
+ * The proccess is applied for each captured frame.
+ */
+static void
+preview_enable_drkframe_capture(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DRKFCAP);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DRKFCAP);
+}
+
+/*
+ * preview_enable_drkframe - Enable/Disable of the darkframe subtract.
+ * @enable: 1 - Acquires memory bandwidth since the pixels in each frame is
+ * subtracted with the pixels in the current frame.
+ *
+ * The proccess is applied for each captured frame.
+ */
+static void
+preview_enable_drkframe(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DRKFEN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DRKFEN);
+}
+
+/*
+ * preview_config_drkf_shadcomp - Configures shift value in shading comp.
+ * @scomp_shtval: 3bit value of shift used in shading compensation.
+ */
+static void
+preview_config_drkf_shadcomp(struct isp_prev_device *prev,
+ const void *scomp_shtval)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const u32 *shtval = scomp_shtval;
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_SCOMP_SFT_MASK,
+ *shtval << ISPPRV_PCR_SCOMP_SFT_SHIFT);
+}
+
+/*
+ * preview_enable_hmed - Enables/Disables of the Horizontal Median Filter.
+ * @enable: 1 - Enables Horizontal Median Filter.
+ */
+static void
+preview_enable_hmed(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_HMEDEN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_HMEDEN);
+}
+
+/*
+ * preview_config_hmed - Configures the Horizontal Median Filter.
+ * @prev_hmed: Structure containing the odd and even distance between the
+ * pixels in the image along with the filter threshold.
+ */
+static void
+preview_config_hmed(struct isp_prev_device *prev, const void *prev_hmed)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_hmed *hmed = prev_hmed;
+
+ isp_reg_writel(isp, (hmed->odddist == 1 ? 0 : ISPPRV_HMED_ODDDIST) |
+ (hmed->evendist == 1 ? 0 : ISPPRV_HMED_EVENDIST) |
+ (hmed->thres << ISPPRV_HMED_THRESHOLD_SHIFT),
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED);
+}
+
+/*
+ * preview_config_noisefilter - Configures the Noise Filter.
+ * @prev_nf: Structure containing the noisefilter table, strength to be used
+ * for the noise filter and the defect correction enable flag.
+ */
+static void
+preview_config_noisefilter(struct isp_prev_device *prev, const void *prev_nf)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_nf *nf = prev_nf;
+ unsigned int i;
+
+ isp_reg_writel(isp, nf->spread, OMAP3_ISP_IOMEM_PREV, ISPPRV_NF);
+ isp_reg_writel(isp, ISPPRV_NF_TABLE_ADDR,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+ for (i = 0; i < OMAP3ISP_PREV_NF_TBL_SIZE; i++) {
+ isp_reg_writel(isp, nf->table[i],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+ }
+}
+
+/*
+ * preview_config_dcor - Configures the defect correction
+ * @prev_dcor: Structure containing the defect correct thresholds
+ */
+static void
+preview_config_dcor(struct isp_prev_device *prev, const void *prev_dcor)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_dcor *dcor = prev_dcor;
+
+ isp_reg_writel(isp, dcor->detect_correct[0],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR0);
+ isp_reg_writel(isp, dcor->detect_correct[1],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR1);
+ isp_reg_writel(isp, dcor->detect_correct[2],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR2);
+ isp_reg_writel(isp, dcor->detect_correct[3],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR3);
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DCCOUP,
+ dcor->couplet_mode_en ? ISPPRV_PCR_DCCOUP : 0);
+}
+
+/*
+ * preview_config_cfa - Configures the CFA Interpolation parameters.
+ * @prev_cfa: Structure containing the CFA interpolation table, CFA format
+ * in the image, vertical and horizontal gradient threshold.
+ */
+static void
+preview_config_cfa(struct isp_prev_device *prev, const void *prev_cfa)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_cfa *cfa = prev_cfa;
+ unsigned int i;
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_CFAFMT_MASK,
+ cfa->format << ISPPRV_PCR_CFAFMT_SHIFT);
+
+ isp_reg_writel(isp,
+ (cfa->gradthrs_vert << ISPPRV_CFA_GRADTH_VER_SHIFT) |
+ (cfa->gradthrs_horz << ISPPRV_CFA_GRADTH_HOR_SHIFT),
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA);
+
+ isp_reg_writel(isp, ISPPRV_CFA_TABLE_ADDR,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+
+ for (i = 0; i < OMAP3ISP_PREV_CFA_TBL_SIZE; i++) {
+ isp_reg_writel(isp, cfa->table[i],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+ }
+}
+
+/*
+ * preview_config_gammacorrn - Configures the Gamma Correction table values
+ * @gtable: Structure containing the table for red, blue, green gamma table.
+ */
+static void
+preview_config_gammacorrn(struct isp_prev_device *prev, const void *gtable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_gtables *gt = gtable;
+ unsigned int i;
+
+ isp_reg_writel(isp, ISPPRV_REDGAMMA_TABLE_ADDR,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+ for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
+ isp_reg_writel(isp, gt->red[i], OMAP3_ISP_IOMEM_PREV,
+ ISPPRV_SET_TBL_DATA);
+
+ isp_reg_writel(isp, ISPPRV_GREENGAMMA_TABLE_ADDR,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+ for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
+ isp_reg_writel(isp, gt->green[i], OMAP3_ISP_IOMEM_PREV,
+ ISPPRV_SET_TBL_DATA);
+
+ isp_reg_writel(isp, ISPPRV_BLUEGAMMA_TABLE_ADDR,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+ for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
+ isp_reg_writel(isp, gt->blue[i], OMAP3_ISP_IOMEM_PREV,
+ ISPPRV_SET_TBL_DATA);
+}
+
+/*
+ * preview_config_luma_enhancement - Sets the Luminance Enhancement table.
+ * @ytable: Structure containing the table for Luminance Enhancement table.
+ */
+static void
+preview_config_luma_enhancement(struct isp_prev_device *prev,
+ const void *ytable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_luma *yt = ytable;
+ unsigned int i;
+
+ isp_reg_writel(isp, ISPPRV_YENH_TABLE_ADDR,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+ for (i = 0; i < OMAP3ISP_PREV_YENH_TBL_SIZE; i++) {
+ isp_reg_writel(isp, yt->table[i],
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+ }
+}
+
+/*
+ * preview_config_chroma_suppression - Configures the Chroma Suppression.
+ * @csup: Structure containing the threshold value for suppression
+ * and the hypass filter enable flag.
+ */
+static void
+preview_config_chroma_suppression(struct isp_prev_device *prev,
+ const void *csup)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_csup *cs = csup;
+
+ isp_reg_writel(isp,
+ cs->gain | (cs->thres << ISPPRV_CSUP_THRES_SHIFT) |
+ (cs->hypf_en << ISPPRV_CSUP_HPYF_SHIFT),
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP);
+}
+
+/*
+ * preview_enable_noisefilter - Enables/Disables the Noise Filter.
+ * @enable: 1 - Enables the Noise Filter.
+ */
+static void
+preview_enable_noisefilter(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_NFEN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_NFEN);
+}
+
+/*
+ * preview_enable_dcor - Enables/Disables the defect correction.
+ * @enable: 1 - Enables the defect correction.
+ */
+static void
+preview_enable_dcor(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DCOREN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_DCOREN);
+}
+
+/*
+ * preview_enable_cfa - Enable/Disable the CFA Interpolation.
+ * @enable: 1 - Enables the CFA.
+ */
+static void
+preview_enable_cfa(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_CFAEN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_CFAEN);
+}
+
+/*
+ * preview_enable_gammabypass - Enables/Disables the GammaByPass
+ * @enable: 1 - Bypasses Gamma - 10bit input is cropped to 8MSB.
+ * 0 - Goes through Gamma Correction. input and output is 10bit.
+ */
+static void
+preview_enable_gammabypass(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_GAMMA_BYPASS);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_GAMMA_BYPASS);
+}
+
+/*
+ * preview_enable_luma_enhancement - Enables/Disables Luminance Enhancement
+ * @enable: 1 - Enable the Luminance Enhancement.
+ */
+static void
+preview_enable_luma_enhancement(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_YNENHEN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_YNENHEN);
+}
+
+/*
+ * preview_enable_chroma_suppression - Enables/Disables Chrominance Suppr.
+ * @enable: 1 - Enable the Chrominance Suppression.
+ */
+static void
+preview_enable_chroma_suppression(struct isp_prev_device *prev, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_SUPEN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_SUPEN);
+}
+
+/*
+ * preview_config_whitebalance - Configures the White Balance parameters.
+ * @prev_wbal: Structure containing the digital gain and white balance
+ * coefficient.
+ *
+ * Coefficient matrix always with default values.
+ */
+static void
+preview_config_whitebalance(struct isp_prev_device *prev, const void *prev_wbal)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_wbal *wbal = prev_wbal;
+ u32 val;
+
+ isp_reg_writel(isp, wbal->dgain, OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN);
+
+ val = wbal->coef0 << ISPPRV_WBGAIN_COEF0_SHIFT;
+ val |= wbal->coef1 << ISPPRV_WBGAIN_COEF1_SHIFT;
+ val |= wbal->coef2 << ISPPRV_WBGAIN_COEF2_SHIFT;
+ val |= wbal->coef3 << ISPPRV_WBGAIN_COEF3_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN);
+
+ isp_reg_writel(isp,
+ ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_0_SHIFT |
+ ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_1_SHIFT |
+ ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_2_SHIFT |
+ ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_3_SHIFT |
+ ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_0_SHIFT |
+ ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_1_SHIFT |
+ ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_2_SHIFT |
+ ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_3_SHIFT |
+ ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_0_SHIFT |
+ ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_1_SHIFT |
+ ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_2_SHIFT |
+ ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_3_SHIFT |
+ ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_0_SHIFT |
+ ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_1_SHIFT |
+ ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_2_SHIFT |
+ ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_3_SHIFT,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL);
+}
+
+/*
+ * preview_config_blkadj - Configures the Black Adjustment parameters.
+ * @prev_blkadj: Structure containing the black adjustment towards red, green,
+ * blue.
+ */
+static void
+preview_config_blkadj(struct isp_prev_device *prev, const void *prev_blkadj)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_blkadj *blkadj = prev_blkadj;
+
+ isp_reg_writel(isp, (blkadj->blue << ISPPRV_BLKADJOFF_B_SHIFT) |
+ (blkadj->green << ISPPRV_BLKADJOFF_G_SHIFT) |
+ (blkadj->red << ISPPRV_BLKADJOFF_R_SHIFT),
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF);
+}
+
+/*
+ * preview_config_rgb_blending - Configures the RGB-RGB Blending matrix.
+ * @rgb2rgb: Structure containing the rgb to rgb blending matrix and the rgb
+ * offset.
+ */
+static void
+preview_config_rgb_blending(struct isp_prev_device *prev, const void *rgb2rgb)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_rgbtorgb *rgbrgb = rgb2rgb;
+ u32 val;
+
+ val = (rgbrgb->matrix[0][0] & 0xfff) << ISPPRV_RGB_MAT1_MTX_RR_SHIFT;
+ val |= (rgbrgb->matrix[0][1] & 0xfff) << ISPPRV_RGB_MAT1_MTX_GR_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1);
+
+ val = (rgbrgb->matrix[0][2] & 0xfff) << ISPPRV_RGB_MAT2_MTX_BR_SHIFT;
+ val |= (rgbrgb->matrix[1][0] & 0xfff) << ISPPRV_RGB_MAT2_MTX_RG_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2);
+
+ val = (rgbrgb->matrix[1][1] & 0xfff) << ISPPRV_RGB_MAT3_MTX_GG_SHIFT;
+ val |= (rgbrgb->matrix[1][2] & 0xfff) << ISPPRV_RGB_MAT3_MTX_BG_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3);
+
+ val = (rgbrgb->matrix[2][0] & 0xfff) << ISPPRV_RGB_MAT4_MTX_RB_SHIFT;
+ val |= (rgbrgb->matrix[2][1] & 0xfff) << ISPPRV_RGB_MAT4_MTX_GB_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4);
+
+ val = (rgbrgb->matrix[2][2] & 0xfff) << ISPPRV_RGB_MAT5_MTX_BB_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5);
+
+ val = (rgbrgb->offset[0] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFR_SHIFT;
+ val |= (rgbrgb->offset[1] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFG_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1);
+
+ val = (rgbrgb->offset[2] & 0x3ff) << ISPPRV_RGB_OFF2_MTX_OFFB_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2);
+}
+
+/*
+ * Configures the RGB-YCbYCr conversion matrix
+ * @prev_csc: Structure containing the RGB to YCbYCr matrix and the
+ * YCbCr offset.
+ */
+static void
+preview_config_rgb_to_ycbcr(struct isp_prev_device *prev, const void *prev_csc)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_csc *csc = prev_csc;
+ u32 val;
+
+ val = (csc->matrix[0][0] & 0x3ff) << ISPPRV_CSC0_RY_SHIFT;
+ val |= (csc->matrix[0][1] & 0x3ff) << ISPPRV_CSC0_GY_SHIFT;
+ val |= (csc->matrix[0][2] & 0x3ff) << ISPPRV_CSC0_BY_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0);
+
+ val = (csc->matrix[1][0] & 0x3ff) << ISPPRV_CSC1_RCB_SHIFT;
+ val |= (csc->matrix[1][1] & 0x3ff) << ISPPRV_CSC1_GCB_SHIFT;
+ val |= (csc->matrix[1][2] & 0x3ff) << ISPPRV_CSC1_BCB_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1);
+
+ val = (csc->matrix[2][0] & 0x3ff) << ISPPRV_CSC2_RCR_SHIFT;
+ val |= (csc->matrix[2][1] & 0x3ff) << ISPPRV_CSC2_GCR_SHIFT;
+ val |= (csc->matrix[2][2] & 0x3ff) << ISPPRV_CSC2_BCR_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2);
+
+ val = (csc->offset[0] & 0xff) << ISPPRV_CSC_OFFSET_Y_SHIFT;
+ val |= (csc->offset[1] & 0xff) << ISPPRV_CSC_OFFSET_CB_SHIFT;
+ val |= (csc->offset[2] & 0xff) << ISPPRV_CSC_OFFSET_CR_SHIFT;
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET);
+}
+
+/*
+ * preview_update_contrast - Updates the contrast.
+ * @contrast: Pointer to hold the current programmed contrast value.
+ *
+ * Value should be programmed before enabling the module.
+ */
+static void
+preview_update_contrast(struct isp_prev_device *prev, u8 contrast)
+{
+ struct prev_params *params = &prev->params;
+
+ if (params->contrast != (contrast * ISPPRV_CONTRAST_UNITS)) {
+ params->contrast = contrast * ISPPRV_CONTRAST_UNITS;
+ prev->update |= PREV_CONTRAST;
+ }
+}
+
+/*
+ * preview_config_contrast - Configures the Contrast.
+ * @params: Contrast value (u8 pointer, U8Q0 format).
+ *
+ * Value should be programmed before enabling the module.
+ */
+static void
+preview_config_contrast(struct isp_prev_device *prev, const void *params)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT,
+ 0xff << ISPPRV_CNT_BRT_CNT_SHIFT,
+ *(u8 *)params << ISPPRV_CNT_BRT_CNT_SHIFT);
+}
+
+/*
+ * preview_update_brightness - Updates the brightness in preview module.
+ * @brightness: Pointer to hold the current programmed brightness value.
+ *
+ */
+static void
+preview_update_brightness(struct isp_prev_device *prev, u8 brightness)
+{
+ struct prev_params *params = &prev->params;
+
+ if (params->brightness != (brightness * ISPPRV_BRIGHT_UNITS)) {
+ params->brightness = brightness * ISPPRV_BRIGHT_UNITS;
+ prev->update |= PREV_BRIGHTNESS;
+ }
+}
+
+/*
+ * preview_config_brightness - Configures the brightness.
+ * @params: Brightness value (u8 pointer, U8Q0 format).
+ */
+static void
+preview_config_brightness(struct isp_prev_device *prev, const void *params)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT,
+ 0xff << ISPPRV_CNT_BRT_BRT_SHIFT,
+ *(u8 *)params << ISPPRV_CNT_BRT_BRT_SHIFT);
+}
+
+/*
+ * preview_config_yc_range - Configures the max and min Y and C values.
+ * @yclimit: Structure containing the range of Y and C values.
+ */
+static void
+preview_config_yc_range(struct isp_prev_device *prev, const void *yclimit)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ const struct omap3isp_prev_yclimit *yc = yclimit;
+
+ isp_reg_writel(isp,
+ yc->maxC << ISPPRV_SETUP_YC_MAXC_SHIFT |
+ yc->maxY << ISPPRV_SETUP_YC_MAXY_SHIFT |
+ yc->minC << ISPPRV_SETUP_YC_MINC_SHIFT |
+ yc->minY << ISPPRV_SETUP_YC_MINY_SHIFT,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC);
+}
+
+/* preview parameters update structure */
+struct preview_update {
+ int cfg_bit;
+ int feature_bit;
+ void (*config)(struct isp_prev_device *, const void *);
+ void (*enable)(struct isp_prev_device *, u8);
+};
+
+static struct preview_update update_attrs[] = {
+ {OMAP3ISP_PREV_LUMAENH, PREV_LUMA_ENHANCE,
+ preview_config_luma_enhancement,
+ preview_enable_luma_enhancement},
+ {OMAP3ISP_PREV_INVALAW, PREV_INVERSE_ALAW,
+ NULL,
+ preview_enable_invalaw},
+ {OMAP3ISP_PREV_HRZ_MED, PREV_HORZ_MEDIAN_FILTER,
+ preview_config_hmed,
+ preview_enable_hmed},
+ {OMAP3ISP_PREV_CFA, PREV_CFA,
+ preview_config_cfa,
+ preview_enable_cfa},
+ {OMAP3ISP_PREV_CHROMA_SUPP, PREV_CHROMA_SUPPRESS,
+ preview_config_chroma_suppression,
+ preview_enable_chroma_suppression},
+ {OMAP3ISP_PREV_WB, PREV_WB,
+ preview_config_whitebalance,
+ NULL},
+ {OMAP3ISP_PREV_BLKADJ, PREV_BLKADJ,
+ preview_config_blkadj,
+ NULL},
+ {OMAP3ISP_PREV_RGB2RGB, PREV_RGB2RGB,
+ preview_config_rgb_blending,
+ NULL},
+ {OMAP3ISP_PREV_COLOR_CONV, PREV_COLOR_CONV,
+ preview_config_rgb_to_ycbcr,
+ NULL},
+ {OMAP3ISP_PREV_YC_LIMIT, PREV_YCLIMITS,
+ preview_config_yc_range,
+ NULL},
+ {OMAP3ISP_PREV_DEFECT_COR, PREV_DEFECT_COR,
+ preview_config_dcor,
+ preview_enable_dcor},
+ {OMAP3ISP_PREV_GAMMABYPASS, PREV_GAMMA_BYPASS,
+ NULL,
+ preview_enable_gammabypass},
+ {OMAP3ISP_PREV_DRK_FRM_CAPTURE, PREV_DARK_FRAME_CAPTURE,
+ NULL,
+ preview_enable_drkframe_capture},
+ {OMAP3ISP_PREV_DRK_FRM_SUBTRACT, PREV_DARK_FRAME_SUBTRACT,
+ NULL,
+ preview_enable_drkframe},
+ {OMAP3ISP_PREV_LENS_SHADING, PREV_LENS_SHADING,
+ preview_config_drkf_shadcomp,
+ preview_enable_drkframe},
+ {OMAP3ISP_PREV_NF, PREV_NOISE_FILTER,
+ preview_config_noisefilter,
+ preview_enable_noisefilter},
+ {OMAP3ISP_PREV_GAMMA, PREV_GAMMA,
+ preview_config_gammacorrn,
+ NULL},
+ {-1, PREV_CONTRAST,
+ preview_config_contrast,
+ NULL},
+ {-1, PREV_BRIGHTNESS,
+ preview_config_brightness,
+ NULL},
+};
+
+/*
+ * __preview_get_ptrs - helper function which return pointers to members
+ * of params and config structures.
+ * @params - pointer to preview_params structure.
+ * @param - return pointer to appropriate structure field.
+ * @configs - pointer to update config structure.
+ * @config - return pointer to appropriate structure field.
+ * @bit - for which feature to return pointers.
+ * Return size of coresponding prev_params member
+ */
+static u32
+__preview_get_ptrs(struct prev_params *params, void **param,
+ struct omap3isp_prev_update_config *configs,
+ void __user **config, u32 bit)
+{
+#define CHKARG(cfgs, cfg, field) \
+ if (cfgs && cfg) { \
+ *(cfg) = (cfgs)->field; \
+ }
+
+ switch (bit) {
+ case PREV_HORZ_MEDIAN_FILTER:
+ *param = ¶ms->hmed;
+ CHKARG(configs, config, hmed)
+ return sizeof(params->hmed);
+ case PREV_NOISE_FILTER:
+ *param = ¶ms->nf;
+ CHKARG(configs, config, nf)
+ return sizeof(params->nf);
+ break;
+ case PREV_CFA:
+ *param = ¶ms->cfa;
+ CHKARG(configs, config, cfa)
+ return sizeof(params->cfa);
+ case PREV_LUMA_ENHANCE:
+ *param = ¶ms->luma;
+ CHKARG(configs, config, luma)
+ return sizeof(params->luma);
+ case PREV_CHROMA_SUPPRESS:
+ *param = ¶ms->csup;
+ CHKARG(configs, config, csup)
+ return sizeof(params->csup);
+ case PREV_DEFECT_COR:
+ *param = ¶ms->dcor;
+ CHKARG(configs, config, dcor)
+ return sizeof(params->dcor);
+ case PREV_BLKADJ:
+ *param = ¶ms->blk_adj;
+ CHKARG(configs, config, blkadj)
+ return sizeof(params->blk_adj);
+ case PREV_YCLIMITS:
+ *param = ¶ms->yclimit;
+ CHKARG(configs, config, yclimit)
+ return sizeof(params->yclimit);
+ case PREV_RGB2RGB:
+ *param = ¶ms->rgb2rgb;
+ CHKARG(configs, config, rgb2rgb)
+ return sizeof(params->rgb2rgb);
+ case PREV_COLOR_CONV:
+ *param = ¶ms->rgb2ycbcr;
+ CHKARG(configs, config, csc)
+ return sizeof(params->rgb2ycbcr);
+ case PREV_WB:
+ *param = ¶ms->wbal;
+ CHKARG(configs, config, wbal)
+ return sizeof(params->wbal);
+ case PREV_GAMMA:
+ *param = ¶ms->gamma;
+ CHKARG(configs, config, gamma)
+ return sizeof(params->gamma);
+ case PREV_CONTRAST:
+ *param = ¶ms->contrast;
+ return 0;
+ case PREV_BRIGHTNESS:
+ *param = ¶ms->brightness;
+ return 0;
+ default:
+ *param = NULL;
+ *config = NULL;
+ break;
+ }
+ return 0;
+}
+
+/*
+ * preview_config - Copy and update local structure with userspace preview
+ * configuration.
+ * @prev: ISP preview engine
+ * @cfg: Configuration
+ *
+ * Return zero if success or -EFAULT if the configuration can't be copied from
+ * userspace.
+ */
+static int preview_config(struct isp_prev_device *prev,
+ struct omap3isp_prev_update_config *cfg)
+{
+ struct prev_params *params;
+ struct preview_update *attr;
+ int i, bit, rval = 0;
+
+ params = &prev->params;
+
+ if (prev->state != ISP_PIPELINE_STREAM_STOPPED) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&prev->lock, flags);
+ prev->shadow_update = 1;
+ spin_unlock_irqrestore(&prev->lock, flags);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
+ attr = &update_attrs[i];
+ bit = 0;
+
+ if (!(cfg->update & attr->cfg_bit))
+ continue;
+
+ bit = cfg->flag & attr->cfg_bit;
+ if (bit) {
+ void *to = NULL, __user *from = NULL;
+ unsigned long sz = 0;
+
+ sz = __preview_get_ptrs(params, &to, cfg, &from,
+ bit);
+ if (to && from && sz) {
+ if (copy_from_user(to, from, sz)) {
+ rval = -EFAULT;
+ break;
+ }
+ }
+ params->features |= attr->feature_bit;
+ } else {
+ params->features &= ~attr->feature_bit;
+ }
+
+ prev->update |= attr->feature_bit;
+ }
+
+ prev->shadow_update = 0;
+ return rval;
+}
+
+/*
+ * preview_setup_hw - Setup preview registers and/or internal memory
+ * @prev: pointer to preview private structure
+ * Note: can be called from interrupt context
+ * Return none
+ */
+static void preview_setup_hw(struct isp_prev_device *prev)
+{
+ struct prev_params *params = &prev->params;
+ struct preview_update *attr;
+ int i, bit;
+ void *param_ptr;
+
+ for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
+ attr = &update_attrs[i];
+
+ if (!(prev->update & attr->feature_bit))
+ continue;
+ bit = params->features & attr->feature_bit;
+ if (bit) {
+ if (attr->config) {
+ __preview_get_ptrs(params, ¶m_ptr, NULL,
+ NULL, bit);
+ attr->config(prev, param_ptr);
+ }
+ if (attr->enable)
+ attr->enable(prev, 1);
+ } else
+ if (attr->enable)
+ attr->enable(prev, 0);
+
+ prev->update &= ~attr->feature_bit;
+ }
+}
+
+/*
+ * preview_config_ycpos - Configure byte layout of YUV image.
+ * @mode: Indicates the required byte layout.
+ */
+static void
+preview_config_ycpos(struct isp_prev_device *prev,
+ enum v4l2_mbus_pixelcode pixelcode)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ enum preview_ycpos_mode mode;
+
+ switch (pixelcode) {
+ case V4L2_MBUS_FMT_YUYV8_1X16:
+ mode = YCPOS_CrYCbY;
+ break;
+ case V4L2_MBUS_FMT_UYVY8_1X16:
+ mode = YCPOS_YCrYCb;
+ break;
+ default:
+ return;
+ }
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_YCPOS_CrYCbY,
+ mode << ISPPRV_PCR_YCPOS_SHIFT);
+}
+
+/*
+ * preview_config_averager - Enable / disable / configure averager
+ * @average: Average value to be configured.
+ */
+static void preview_config_averager(struct isp_prev_device *prev, u8 average)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ int reg = 0;
+
+ if (prev->params.cfa.format == OMAP3ISP_CFAFMT_BAYER)
+ reg = ISPPRV_AVE_EVENDIST_2 << ISPPRV_AVE_EVENDIST_SHIFT |
+ ISPPRV_AVE_ODDDIST_2 << ISPPRV_AVE_ODDDIST_SHIFT |
+ average;
+ else if (prev->params.cfa.format == OMAP3ISP_CFAFMT_RGBFOVEON)
+ reg = ISPPRV_AVE_EVENDIST_3 << ISPPRV_AVE_EVENDIST_SHIFT |
+ ISPPRV_AVE_ODDDIST_3 << ISPPRV_AVE_ODDDIST_SHIFT |
+ average;
+ isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE);
+}
+
+/*
+ * preview_config_input_size - Configure the input frame size
+ *
+ * The preview engine crops several rows and columns internally depending on
+ * which processing blocks are enabled. The driver assumes all those blocks are
+ * enabled when reporting source pad formats to userspace. If this assumption is
+ * not true, rows and columns must be manually cropped at the preview engine
+ * input to avoid overflows at the end of lines and frames.
+ */
+static void preview_config_input_size(struct isp_prev_device *prev)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ struct prev_params *params = &prev->params;
+ struct v4l2_mbus_framefmt *format = &prev->formats[PREV_PAD_SINK];
+ unsigned int sph = 0;
+ unsigned int eph = format->width - 1;
+ unsigned int slv = 0;
+ unsigned int elv = format->height - 1;
+
+ if (prev->input == PREVIEW_INPUT_CCDC) {
+ sph += 2;
+ eph -= 2;
+ }
+
+ /*
+ * Median filter 4 pixels
+ * Noise filter 4 pixels, 4 lines
+ * or faulty pixels correction
+ * CFA filter 4 pixels, 4 lines in Bayer mode
+ * 2 lines in other modes
+ * Color suppression 2 pixels
+ * or luma enhancement
+ * -------------------------------------------------------------
+ * Maximum total 14 pixels, 8 lines
+ */
+
+ if (!(params->features & PREV_CFA)) {
+ sph += 2;
+ eph -= 2;
+ slv += 2;
+ elv -= 2;
+ }
+ if (!(params->features & (PREV_DEFECT_COR | PREV_NOISE_FILTER))) {
+ sph += 2;
+ eph -= 2;
+ slv += 2;
+ elv -= 2;
+ }
+ if (!(params->features & PREV_HORZ_MEDIAN_FILTER)) {
+ sph += 2;
+ eph -= 2;
+ }
+ if (!(params->features & (PREV_CHROMA_SUPPRESS | PREV_LUMA_ENHANCE)))
+ sph += 2;
+
+ isp_reg_writel(isp, (sph << ISPPRV_HORZ_INFO_SPH_SHIFT) | eph,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO);
+ isp_reg_writel(isp, (slv << ISPPRV_VERT_INFO_SLV_SHIFT) | elv,
+ OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO);
+}
+
+/*
+ * preview_config_inlineoffset - Configures the Read address line offset.
+ * @prev: Preview module
+ * @offset: Line offset
+ *
+ * According to the TRM, the line offset must be aligned on a 32 bytes boundary.
+ * However, a hardware bug requires the memory start address to be aligned on a
+ * 64 bytes boundary, so the offset probably should be aligned on 64 bytes as
+ * well.
+ */
+static void
+preview_config_inlineoffset(struct isp_prev_device *prev, u32 offset)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
+ ISPPRV_RADR_OFFSET);
+}
+
+/*
+ * preview_set_inaddr - Sets memory address of input frame.
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ *
+ * Configures the memory address from which the input frame is to be read.
+ */
+static void preview_set_inaddr(struct isp_prev_device *prev, u32 addr)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_RSDR_ADDR);
+}
+
+/*
+ * preview_config_outlineoffset - Configures the Write address line offset.
+ * @offset: Line Offset for the preview output.
+ *
+ * The offset must be a multiple of 32 bytes.
+ */
+static void preview_config_outlineoffset(struct isp_prev_device *prev,
+ u32 offset)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
+ ISPPRV_WADD_OFFSET);
+}
+
+/*
+ * preview_set_outaddr - Sets the memory address to store output frame
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ *
+ * Configures the memory address to which the output frame is written.
+ */
+static void preview_set_outaddr(struct isp_prev_device *prev, u32 addr)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR);
+}
+
+static void preview_adjust_bandwidth(struct isp_prev_device *prev)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity);
+ struct isp_device *isp = to_isp_device(prev);
+ const struct v4l2_mbus_framefmt *ifmt = &prev->formats[PREV_PAD_SINK];
+ unsigned long l3_ick = pipe->l3_ick;
+ struct v4l2_fract *timeperframe;
+ unsigned int cycles_per_frame;
+ unsigned int requests_per_frame;
+ unsigned int cycles_per_request;
+ unsigned int minimum;
+ unsigned int maximum;
+ unsigned int value;
+
+ if (prev->input != PREVIEW_INPUT_MEMORY) {
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
+ ISPSBL_SDR_REQ_PRV_EXP_MASK);
+ return;
+ }
+
+ /* Compute the minimum number of cycles per request, based on the
+ * pipeline maximum data rate. This is an absolute lower bound if we
+ * don't want SBL overflows, so round the value up.
+ */
+ cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1,
+ pipe->max_rate);
+ minimum = DIV_ROUND_UP(cycles_per_request, 32);
+
+ /* Compute the maximum number of cycles per request, based on the
+ * requested frame rate. This is a soft upper bound to achieve a frame
+ * rate equal or higher than the requested value, so round the value
+ * down.
+ */
+ timeperframe = &pipe->max_timeperframe;
+
+ requests_per_frame = DIV_ROUND_UP(ifmt->width * 2, 256) * ifmt->height;
+ cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator,
+ timeperframe->denominator);
+ cycles_per_request = cycles_per_frame / requests_per_frame;
+
+ maximum = cycles_per_request / 32;
+
+ value = max(minimum, maximum);
+
+ dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value);
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
+ ISPSBL_SDR_REQ_PRV_EXP_MASK,
+ value << ISPSBL_SDR_REQ_PRV_EXP_SHIFT);
+}
+
+/*
+ * omap3isp_preview_busy - Gets busy state of preview module.
+ */
+int omap3isp_preview_busy(struct isp_prev_device *prev)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ return isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR)
+ & ISPPRV_PCR_BUSY;
+}
+
+/*
+ * omap3isp_preview_restore_context - Restores the values of preview registers
+ */
+void omap3isp_preview_restore_context(struct isp_device *isp)
+{
+ isp->isp_prev.update = PREV_FEATURES_END - 1;
+ preview_setup_hw(&isp->isp_prev);
+}
+
+/*
+ * preview_print_status - Dump preview module registers to the kernel log
+ */
+#define PREV_PRINT_REGISTER(isp, name)\
+ dev_dbg(isp->dev, "###PRV " #name "=0x%08x\n", \
+ isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_##name))
+
+static void preview_print_status(struct isp_prev_device *prev)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ dev_dbg(isp->dev, "-------------Preview Register dump----------\n");
+
+ PREV_PRINT_REGISTER(isp, PCR);
+ PREV_PRINT_REGISTER(isp, HORZ_INFO);
+ PREV_PRINT_REGISTER(isp, VERT_INFO);
+ PREV_PRINT_REGISTER(isp, RSDR_ADDR);
+ PREV_PRINT_REGISTER(isp, RADR_OFFSET);
+ PREV_PRINT_REGISTER(isp, DSDR_ADDR);
+ PREV_PRINT_REGISTER(isp, DRKF_OFFSET);
+ PREV_PRINT_REGISTER(isp, WSDR_ADDR);
+ PREV_PRINT_REGISTER(isp, WADD_OFFSET);
+ PREV_PRINT_REGISTER(isp, AVE);
+ PREV_PRINT_REGISTER(isp, HMED);
+ PREV_PRINT_REGISTER(isp, NF);
+ PREV_PRINT_REGISTER(isp, WB_DGAIN);
+ PREV_PRINT_REGISTER(isp, WBGAIN);
+ PREV_PRINT_REGISTER(isp, WBSEL);
+ PREV_PRINT_REGISTER(isp, CFA);
+ PREV_PRINT_REGISTER(isp, BLKADJOFF);
+ PREV_PRINT_REGISTER(isp, RGB_MAT1);
+ PREV_PRINT_REGISTER(isp, RGB_MAT2);
+ PREV_PRINT_REGISTER(isp, RGB_MAT3);
+ PREV_PRINT_REGISTER(isp, RGB_MAT4);
+ PREV_PRINT_REGISTER(isp, RGB_MAT5);
+ PREV_PRINT_REGISTER(isp, RGB_OFF1);
+ PREV_PRINT_REGISTER(isp, RGB_OFF2);
+ PREV_PRINT_REGISTER(isp, CSC0);
+ PREV_PRINT_REGISTER(isp, CSC1);
+ PREV_PRINT_REGISTER(isp, CSC2);
+ PREV_PRINT_REGISTER(isp, CSC_OFFSET);
+ PREV_PRINT_REGISTER(isp, CNT_BRT);
+ PREV_PRINT_REGISTER(isp, CSUP);
+ PREV_PRINT_REGISTER(isp, SETUP_YC);
+ PREV_PRINT_REGISTER(isp, SET_TBL_ADDR);
+ PREV_PRINT_REGISTER(isp, CDC_THR0);
+ PREV_PRINT_REGISTER(isp, CDC_THR1);
+ PREV_PRINT_REGISTER(isp, CDC_THR2);
+ PREV_PRINT_REGISTER(isp, CDC_THR3);
+
+ dev_dbg(isp->dev, "--------------------------------------------\n");
+}
+
+/*
+ * preview_init_params - init image processing parameters.
+ * @prev: pointer to previewer private structure
+ * return none
+ */
+static void preview_init_params(struct isp_prev_device *prev)
+{
+ struct prev_params *params = &prev->params;
+ int i = 0;
+
+ /* Init values */
+ params->contrast = ISPPRV_CONTRAST_DEF * ISPPRV_CONTRAST_UNITS;
+ params->brightness = ISPPRV_BRIGHT_DEF * ISPPRV_BRIGHT_UNITS;
+ params->average = NO_AVE;
+ params->cfa.format = OMAP3ISP_CFAFMT_BAYER;
+ memcpy(params->cfa.table, cfa_coef_table,
+ sizeof(params->cfa.table));
+ params->cfa.gradthrs_horz = FLR_CFA_GRADTHRS_HORZ;
+ params->cfa.gradthrs_vert = FLR_CFA_GRADTHRS_VERT;
+ params->csup.gain = FLR_CSUP_GAIN;
+ params->csup.thres = FLR_CSUP_THRES;
+ params->csup.hypf_en = 0;
+ memcpy(params->luma.table, luma_enhance_table,
+ sizeof(params->luma.table));
+ params->nf.spread = FLR_NF_STRGTH;
+ memcpy(params->nf.table, noise_filter_table, sizeof(params->nf.table));
+ params->dcor.couplet_mode_en = 1;
+ for (i = 0; i < OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS; i++)
+ params->dcor.detect_correct[i] = DEF_DETECT_CORRECT_VAL;
+ memcpy(params->gamma.blue, gamma_table, sizeof(params->gamma.blue));
+ memcpy(params->gamma.green, gamma_table, sizeof(params->gamma.green));
+ memcpy(params->gamma.red, gamma_table, sizeof(params->gamma.red));
+ params->wbal.dgain = FLR_WBAL_DGAIN;
+ params->wbal.coef0 = FLR_WBAL_COEF;
+ params->wbal.coef1 = FLR_WBAL_COEF;
+ params->wbal.coef2 = FLR_WBAL_COEF;
+ params->wbal.coef3 = FLR_WBAL_COEF;
+ params->blk_adj.red = FLR_BLKADJ_RED;
+ params->blk_adj.green = FLR_BLKADJ_GREEN;
+ params->blk_adj.blue = FLR_BLKADJ_BLUE;
+ params->rgb2rgb = flr_rgb2rgb;
+ params->rgb2ycbcr = flr_prev_csc;
+ params->yclimit.minC = ISPPRV_YC_MIN;
+ params->yclimit.maxC = ISPPRV_YC_MAX;
+ params->yclimit.minY = ISPPRV_YC_MIN;
+ params->yclimit.maxY = ISPPRV_YC_MAX;
+
+ params->features = PREV_CFA | PREV_DEFECT_COR | PREV_NOISE_FILTER
+ | PREV_GAMMA | PREV_BLKADJ | PREV_YCLIMITS
+ | PREV_RGB2RGB | PREV_COLOR_CONV | PREV_WB
+ | PREV_BRIGHTNESS | PREV_CONTRAST;
+
+ prev->update = PREV_FEATURES_END - 1;
+}
+
+/*
+ * preview_max_out_width - Handle previewer hardware ouput limitations
+ * @isp_revision : ISP revision
+ * returns maximum width output for current isp revision
+ */
+static unsigned int preview_max_out_width(struct isp_prev_device *prev)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ switch (isp->revision) {
+ case ISP_REVISION_1_0:
+ return ISPPRV_MAXOUTPUT_WIDTH;
+
+ case ISP_REVISION_2_0:
+ default:
+ return ISPPRV_MAXOUTPUT_WIDTH_ES2;
+
+ case ISP_REVISION_15_0:
+ return ISPPRV_MAXOUTPUT_WIDTH_3630;
+ }
+}
+
+static void preview_configure(struct isp_prev_device *prev)
+{
+ struct isp_device *isp = to_isp_device(prev);
+ struct v4l2_mbus_framefmt *format;
+ unsigned int max_out_width;
+ unsigned int format_avg;
+
+ preview_setup_hw(prev);
+
+ if (prev->output & PREVIEW_OUTPUT_MEMORY)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_SDRPORT);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_SDRPORT);
+
+ if (prev->output & PREVIEW_OUTPUT_RESIZER)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_RSZPORT);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_RSZPORT);
+
+ /* PREV_PAD_SINK */
+ format = &prev->formats[PREV_PAD_SINK];
+
+ preview_adjust_bandwidth(prev);
+
+ preview_config_input_size(prev);
+
+ if (prev->input == PREVIEW_INPUT_CCDC)
+ preview_config_inlineoffset(prev, 0);
+ else
+ preview_config_inlineoffset(prev,
+ ALIGN(format->width, 0x20) * 2);
+
+ /* PREV_PAD_SOURCE */
+ format = &prev->formats[PREV_PAD_SOURCE];
+
+ if (prev->output & PREVIEW_OUTPUT_MEMORY)
+ preview_config_outlineoffset(prev,
+ ALIGN(format->width, 0x10) * 2);
+
+ max_out_width = preview_max_out_width(prev);
+
+ format_avg = fls(DIV_ROUND_UP(format->width, max_out_width) - 1);
+ preview_config_averager(prev, format_avg);
+ preview_config_ycpos(prev, format->code);
+}
+
+/* -----------------------------------------------------------------------------
+ * Interrupt handling
+ */
+
+static void preview_enable_oneshot(struct isp_prev_device *prev)
+{
+ struct isp_device *isp = to_isp_device(prev);
+
+ /* The PCR.SOURCE bit is automatically reset to 0 when the PCR.ENABLE
+ * bit is set. As the preview engine is used in single-shot mode, we
+ * need to set PCR.SOURCE before enabling the preview engine.
+ */
+ if (prev->input == PREVIEW_INPUT_MEMORY)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_SOURCE);
+
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+ ISPPRV_PCR_EN | ISPPRV_PCR_ONESHOT);
+}
+
+void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev)
+{
+ /*
+ * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun
+ * condition, the module was paused and now we have a buffer queued
+ * on the output again. Restart the pipeline if running in continuous
+ * mode.
+ */
+ if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS &&
+ prev->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
+ preview_enable_oneshot(prev);
+ isp_video_dmaqueue_flags_clr(&prev->video_out);
+ }
+}
+
+static void preview_isr_buffer(struct isp_prev_device *prev)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity);
+ struct isp_buffer *buffer;
+ int restart = 0;
+
+ if (prev->input == PREVIEW_INPUT_MEMORY) {
+ buffer = omap3isp_video_buffer_next(&prev->video_in,
+ prev->error);
+ if (buffer != NULL)
+ preview_set_inaddr(prev, buffer->isp_addr);
+ pipe->state |= ISP_PIPELINE_IDLE_INPUT;
+ }
+
+ if (prev->output & PREVIEW_OUTPUT_MEMORY) {
+ buffer = omap3isp_video_buffer_next(&prev->video_out,
+ prev->error);
+ if (buffer != NULL) {
+ preview_set_outaddr(prev, buffer->isp_addr);
+ restart = 1;
+ }
+ pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
+ }
+
+ switch (prev->state) {
+ case ISP_PIPELINE_STREAM_SINGLESHOT:
+ if (isp_pipeline_ready(pipe))
+ omap3isp_pipeline_set_stream(pipe,
+ ISP_PIPELINE_STREAM_SINGLESHOT);
+ break;
+
+ case ISP_PIPELINE_STREAM_CONTINUOUS:
+ /* If an underrun occurs, the video queue operation handler will
+ * restart the preview engine. Otherwise restart it immediately.
+ */
+ if (restart)
+ preview_enable_oneshot(prev);
+ break;
+
+ case ISP_PIPELINE_STREAM_STOPPED:
+ default:
+ return;
+ }
+
+ prev->error = 0;
+}
+
+/*
+ * omap3isp_preview_isr - ISP preview engine interrupt handler
+ *
+ * Manage the preview engine video buffers and configure shadowed registers.
+ */
+void omap3isp_preview_isr(struct isp_prev_device *prev)
+{
+ unsigned long flags;
+
+ if (omap3isp_module_sync_is_stopping(&prev->wait, &prev->stopping))
+ return;
+
+ spin_lock_irqsave(&prev->lock, flags);
+ if (prev->shadow_update)
+ goto done;
+
+ preview_setup_hw(prev);
+ preview_config_input_size(prev);
+
+done:
+ spin_unlock_irqrestore(&prev->lock, flags);
+
+ if (prev->input == PREVIEW_INPUT_MEMORY ||
+ prev->output & PREVIEW_OUTPUT_MEMORY)
+ preview_isr_buffer(prev);
+ else if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS)
+ preview_enable_oneshot(prev);
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP video operations
+ */
+
+static int preview_video_queue(struct isp_video *video,
+ struct isp_buffer *buffer)
+{
+ struct isp_prev_device *prev = &video->isp->isp_prev;
+
+ if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ preview_set_inaddr(prev, buffer->isp_addr);
+
+ if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ preview_set_outaddr(prev, buffer->isp_addr);
+
+ return 0;
+}
+
+static const struct isp_video_operations preview_video_ops = {
+ .queue = preview_video_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 subdev operations
+ */
+
+/*
+ * preview_s_ctrl - Handle set control subdev method
+ * @ctrl: pointer to v4l2 control structure
+ */
+static int preview_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct isp_prev_device *prev =
+ container_of(ctrl->handler, struct isp_prev_device, ctrls);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ preview_update_brightness(prev, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ preview_update_contrast(prev, ctrl->val);
+ break;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops preview_ctrl_ops = {
+ .s_ctrl = preview_s_ctrl,
+};
+
+/*
+ * preview_ioctl - Handle preview module private ioctl's
+ * @prev: pointer to preview context structure
+ * @cmd: configuration command
+ * @arg: configuration argument
+ * return -EINVAL or zero on success
+ */
+static long preview_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+ struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
+
+ switch (cmd) {
+ case VIDIOC_OMAP3ISP_PRV_CFG:
+ return preview_config(prev, arg);
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+/*
+ * preview_set_stream - Enable/Disable streaming on preview subdev
+ * @sd : pointer to v4l2 subdev structure
+ * @enable: 1 == Enable, 0 == Disable
+ * return -EINVAL or zero on sucess
+ */
+static int preview_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
+ struct isp_video *video_out = &prev->video_out;
+ struct isp_device *isp = to_isp_device(prev);
+ struct device *dev = to_device(prev);
+ unsigned long flags;
+
+ if (prev->state == ISP_PIPELINE_STREAM_STOPPED) {
+ if (enable == ISP_PIPELINE_STREAM_STOPPED)
+ return 0;
+
+ omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
+ preview_configure(prev);
+ atomic_set(&prev->stopping, 0);
+ prev->error = 0;
+ preview_print_status(prev);
+ }
+
+ switch (enable) {
+ case ISP_PIPELINE_STREAM_CONTINUOUS:
+ if (prev->output & PREVIEW_OUTPUT_MEMORY)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
+
+ if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED ||
+ !(prev->output & PREVIEW_OUTPUT_MEMORY))
+ preview_enable_oneshot(prev);
+
+ isp_video_dmaqueue_flags_clr(video_out);
+ break;
+
+ case ISP_PIPELINE_STREAM_SINGLESHOT:
+ if (prev->input == PREVIEW_INPUT_MEMORY)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
+ if (prev->output & PREVIEW_OUTPUT_MEMORY)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
+
+ preview_enable_oneshot(prev);
+ break;
+
+ case ISP_PIPELINE_STREAM_STOPPED:
+ if (omap3isp_module_sync_idle(&sd->entity, &prev->wait,
+ &prev->stopping))
+ dev_dbg(dev, "%s: stop timeout.\n", sd->name);
+ spin_lock_irqsave(&prev->lock, flags);
+ omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
+ omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
+ omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
+ spin_unlock_irqrestore(&prev->lock, flags);
+ isp_video_dmaqueue_flags_clr(video_out);
+ break;
+ }
+
+ prev->state = enable;
+ return 0;
+}
+
+static struct v4l2_mbus_framefmt *
+__preview_get_format(struct isp_prev_device *prev, struct v4l2_subdev_fh *fh,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_format(fh, pad);
+ else
+ return &prev->formats[pad];
+}
+
+/* previewer format descriptions */
+static const unsigned int preview_input_fmts[] = {
+ V4L2_MBUS_FMT_SGRBG10_1X10,
+ V4L2_MBUS_FMT_SRGGB10_1X10,
+ V4L2_MBUS_FMT_SBGGR10_1X10,
+ V4L2_MBUS_FMT_SGBRG10_1X10,
+};
+
+static const unsigned int preview_output_fmts[] = {
+ V4L2_MBUS_FMT_UYVY8_1X16,
+ V4L2_MBUS_FMT_YUYV8_1X16,
+};
+
+/*
+ * preview_try_format - Handle try format by pad subdev method
+ * @prev: ISP preview device
+ * @fh : V4L2 subdev file handle
+ * @pad: pad num
+ * @fmt: pointer to v4l2 format structure
+ */
+static void preview_try_format(struct isp_prev_device *prev,
+ struct v4l2_subdev_fh *fh, unsigned int pad,
+ struct v4l2_mbus_framefmt *fmt,
+ enum v4l2_subdev_format_whence which)
+{
+ struct v4l2_mbus_framefmt *format;
+ unsigned int max_out_width;
+ enum v4l2_mbus_pixelcode pixelcode;
+ unsigned int i;
+
+ max_out_width = preview_max_out_width(prev);
+
+ switch (pad) {
+ case PREV_PAD_SINK:
+ /* When reading data from the CCDC, the input size has already
+ * been mangled by the CCDC output pad so it can be accepted
+ * as-is.
+ *
+ * When reading data from memory, clamp the requested width and
+ * height. The TRM doesn't specify a minimum input height, make
+ * sure we got enough lines to enable the noise filter and color
+ * filter array interpolation.
+ */
+ if (prev->input == PREVIEW_INPUT_MEMORY) {
+ fmt->width = clamp_t(u32, fmt->width, PREV_MIN_WIDTH,
+ max_out_width * 8);
+ fmt->height = clamp_t(u32, fmt->height, PREV_MIN_HEIGHT,
+ PREV_MAX_HEIGHT);
+ }
+
+ fmt->colorspace = V4L2_COLORSPACE_SRGB;
+
+ for (i = 0; i < ARRAY_SIZE(preview_input_fmts); i++) {
+ if (fmt->code == preview_input_fmts[i])
+ break;
+ }
+
+ /* If not found, use SGRBG10 as default */
+ if (i >= ARRAY_SIZE(preview_input_fmts))
+ fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
+ break;
+
+ case PREV_PAD_SOURCE:
+ pixelcode = fmt->code;
+ format = __preview_get_format(prev, fh, PREV_PAD_SINK, which);
+ memcpy(fmt, format, sizeof(*fmt));
+
+ /* The preview module output size is configurable through the
+ * input interface (horizontal and vertical cropping) and the
+ * averager (horizontal scaling by 1/1, 1/2, 1/4 or 1/8). In
+ * spite of this, hardcode the output size to the biggest
+ * possible value for simplicity reasons.
+ */
+ switch (pixelcode) {
+ case V4L2_MBUS_FMT_YUYV8_1X16:
+ case V4L2_MBUS_FMT_UYVY8_1X16:
+ fmt->code = pixelcode;
+ break;
+
+ default:
+ fmt->code = V4L2_MBUS_FMT_YUYV8_1X16;
+ break;
+ }
+
+ /* The TRM states (12.1.4.7.1.2) that 2 pixels must be cropped
+ * from the left and right sides when the input source is the
+ * CCDC. This seems not to be needed in practice, investigation
+ * is required.
+ */
+ if (prev->input == PREVIEW_INPUT_CCDC)
+ fmt->width -= 4;
+
+ /* The preview module can output a maximum of 3312 pixels
+ * horizontally due to fixed memory-line sizes. Compute the
+ * horizontal averaging factor accordingly. Note that the limit
+ * applies to the noise filter and CFA interpolation blocks, so
+ * it doesn't take cropping by further blocks into account.
+ *
+ * ES 1.0 hardware revision is limited to 1280 pixels
+ * horizontally.
+ */
+ fmt->width >>= fls(DIV_ROUND_UP(fmt->width, max_out_width) - 1);
+
+ /* Assume that all blocks are enabled and crop pixels and lines
+ * accordingly. See preview_config_input_size() for more
+ * information.
+ */
+ fmt->width -= 14;
+ fmt->height -= 8;
+
+ fmt->colorspace = V4L2_COLORSPACE_JPEG;
+ break;
+ }
+
+ fmt->field = V4L2_FIELD_NONE;
+}
+
+/*
+ * preview_enum_mbus_code - Handle pixel format enumeration
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @code : pointer to v4l2_subdev_mbus_code_enum structure
+ * return -EINVAL or zero on success
+ */
+static int preview_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ switch (code->pad) {
+ case PREV_PAD_SINK:
+ if (code->index >= ARRAY_SIZE(preview_input_fmts))
+ return -EINVAL;
+
+ code->code = preview_input_fmts[code->index];
+ break;
+ case PREV_PAD_SOURCE:
+ if (code->index >= ARRAY_SIZE(preview_output_fmts))
+ return -EINVAL;
+
+ code->code = preview_output_fmts[code->index];
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int preview_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt format;
+
+ if (fse->index != 0)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = 1;
+ format.height = 1;
+ preview_try_format(prev, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->min_width = format.width;
+ fse->min_height = format.height;
+
+ if (format.code != fse->code)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = -1;
+ format.height = -1;
+ preview_try_format(prev, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->max_width = format.width;
+ fse->max_height = format.height;
+
+ return 0;
+}
+
+/*
+ * preview_get_format - Handle get format by pads subdev method
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @fmt: pointer to v4l2 subdev format structure
+ * return -EINVAL or zero on sucess
+ */
+static int preview_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __preview_get_format(prev, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ fmt->format = *format;
+ return 0;
+}
+
+/*
+ * preview_set_format - Handle set format by pads subdev method
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @fmt: pointer to v4l2 subdev format structure
+ * return -EINVAL or zero on success
+ */
+static int preview_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __preview_get_format(prev, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ preview_try_format(prev, fh, fmt->pad, &fmt->format, fmt->which);
+ *format = fmt->format;
+
+ /* Propagate the format from sink to source */
+ if (fmt->pad == PREV_PAD_SINK) {
+ format = __preview_get_format(prev, fh, PREV_PAD_SOURCE,
+ fmt->which);
+ *format = fmt->format;
+ preview_try_format(prev, fh, PREV_PAD_SOURCE, format,
+ fmt->which);
+ }
+
+ return 0;
+}
+
+/*
+ * preview_init_formats - Initialize formats on all pads
+ * @sd: ISP preview V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ *
+ * Initialize all pad formats with default values. If fh is not NULL, try
+ * formats are initialized on the file handle. Otherwise active formats are
+ * initialized on the device.
+ */
+static int preview_init_formats(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_subdev_format format;
+
+ memset(&format, 0, sizeof(format));
+ format.pad = PREV_PAD_SINK;
+ format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
+ format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
+ format.format.width = 4096;
+ format.format.height = 4096;
+ preview_set_format(sd, fh, &format);
+
+ return 0;
+}
+
+/* subdev core operations */
+static const struct v4l2_subdev_core_ops preview_v4l2_core_ops = {
+ .ioctl = preview_ioctl,
+};
+
+/* subdev video operations */
+static const struct v4l2_subdev_video_ops preview_v4l2_video_ops = {
+ .s_stream = preview_set_stream,
+};
+
+/* subdev pad operations */
+static const struct v4l2_subdev_pad_ops preview_v4l2_pad_ops = {
+ .enum_mbus_code = preview_enum_mbus_code,
+ .enum_frame_size = preview_enum_frame_size,
+ .get_fmt = preview_get_format,
+ .set_fmt = preview_set_format,
+};
+
+/* subdev operations */
+static const struct v4l2_subdev_ops preview_v4l2_ops = {
+ .core = &preview_v4l2_core_ops,
+ .video = &preview_v4l2_video_ops,
+ .pad = &preview_v4l2_pad_ops,
+};
+
+/* subdev internal operations */
+static const struct v4l2_subdev_internal_ops preview_v4l2_internal_ops = {
+ .open = preview_init_formats,
+};
+
+/* -----------------------------------------------------------------------------
+ * Media entity operations
+ */
+
+/*
+ * preview_link_setup - Setup previewer connections.
+ * @entity : Pointer to media entity structure
+ * @local : Pointer to local pad array
+ * @remote : Pointer to remote pad array
+ * @flags : Link flags
+ * return -EINVAL or zero on success
+ */
+static int preview_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
+
+ switch (local->index | media_entity_type(remote->entity)) {
+ case PREV_PAD_SINK | MEDIA_ENT_T_DEVNODE:
+ /* read from memory */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (prev->input == PREVIEW_INPUT_CCDC)
+ return -EBUSY;
+ prev->input = PREVIEW_INPUT_MEMORY;
+ } else {
+ if (prev->input == PREVIEW_INPUT_MEMORY)
+ prev->input = PREVIEW_INPUT_NONE;
+ }
+ break;
+
+ case PREV_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* read from ccdc */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (prev->input == PREVIEW_INPUT_MEMORY)
+ return -EBUSY;
+ prev->input = PREVIEW_INPUT_CCDC;
+ } else {
+ if (prev->input == PREVIEW_INPUT_CCDC)
+ prev->input = PREVIEW_INPUT_NONE;
+ }
+ break;
+
+ /*
+ * The ISP core doesn't support pipelines with multiple video outputs.
+ * Revisit this when it will be implemented, and return -EBUSY for now.
+ */
+
+ case PREV_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
+ /* write to memory */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (prev->output & ~PREVIEW_OUTPUT_MEMORY)
+ return -EBUSY;
+ prev->output |= PREVIEW_OUTPUT_MEMORY;
+ } else {
+ prev->output &= ~PREVIEW_OUTPUT_MEMORY;
+ }
+ break;
+
+ case PREV_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* write to resizer */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (prev->output & ~PREVIEW_OUTPUT_RESIZER)
+ return -EBUSY;
+ prev->output |= PREVIEW_OUTPUT_RESIZER;
+ } else {
+ prev->output &= ~PREVIEW_OUTPUT_RESIZER;
+ }
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* media operations */
+static const struct media_entity_operations preview_media_ops = {
+ .link_setup = preview_link_setup,
+};
+
+/*
+ * review_init_entities - Initialize subdev and media entity.
+ * @prev : Pointer to preview structure
+ * return -ENOMEM or zero on success
+ */
+static int preview_init_entities(struct isp_prev_device *prev)
+{
+ struct v4l2_subdev *sd = &prev->subdev;
+ struct media_pad *pads = prev->pads;
+ struct media_entity *me = &sd->entity;
+ int ret;
+
+ prev->input = PREVIEW_INPUT_NONE;
+
+ v4l2_subdev_init(sd, &preview_v4l2_ops);
+ sd->internal_ops = &preview_v4l2_internal_ops;
+ strlcpy(sd->name, "OMAP3 ISP preview", sizeof(sd->name));
+ sd->grp_id = 1 << 16; /* group ID for isp subdevs */
+ v4l2_set_subdevdata(sd, prev);
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ v4l2_ctrl_handler_init(&prev->ctrls, 2);
+ v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_BRIGHTNESS,
+ ISPPRV_BRIGHT_LOW, ISPPRV_BRIGHT_HIGH,
+ ISPPRV_BRIGHT_STEP, ISPPRV_BRIGHT_DEF);
+ v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_CONTRAST,
+ ISPPRV_CONTRAST_LOW, ISPPRV_CONTRAST_HIGH,
+ ISPPRV_CONTRAST_STEP, ISPPRV_CONTRAST_DEF);
+ v4l2_ctrl_handler_setup(&prev->ctrls);
+ sd->ctrl_handler = &prev->ctrls;
+
+ pads[PREV_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+
+ me->ops = &preview_media_ops;
+ ret = media_entity_init(me, PREV_PADS_NUM, pads, 0);
+ if (ret < 0)
+ return ret;
+
+ preview_init_formats(sd, NULL);
+
+ /* According to the OMAP34xx TRM, video buffers need to be aligned on a
+ * 32 bytes boundary. However, an undocumented hardware bug requires a
+ * 64 bytes boundary at the preview engine input.
+ */
+ prev->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ prev->video_in.ops = &preview_video_ops;
+ prev->video_in.isp = to_isp_device(prev);
+ prev->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
+ prev->video_in.bpl_alignment = 64;
+ prev->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ prev->video_out.ops = &preview_video_ops;
+ prev->video_out.isp = to_isp_device(prev);
+ prev->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
+ prev->video_out.bpl_alignment = 32;
+
+ ret = omap3isp_video_init(&prev->video_in, "preview");
+ if (ret < 0)
+ return ret;
+
+ ret = omap3isp_video_init(&prev->video_out, "preview");
+ if (ret < 0)
+ return ret;
+
+ /* Connect the video nodes to the previewer subdev. */
+ ret = media_entity_create_link(&prev->video_in.video.entity, 0,
+ &prev->subdev.entity, PREV_PAD_SINK, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = media_entity_create_link(&prev->subdev.entity, PREV_PAD_SOURCE,
+ &prev->video_out.video.entity, 0, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+void omap3isp_preview_unregister_entities(struct isp_prev_device *prev)
+{
+ media_entity_cleanup(&prev->subdev.entity);
+
+ v4l2_device_unregister_subdev(&prev->subdev);
+ v4l2_ctrl_handler_free(&prev->ctrls);
+ omap3isp_video_unregister(&prev->video_in);
+ omap3isp_video_unregister(&prev->video_out);
+}
+
+int omap3isp_preview_register_entities(struct isp_prev_device *prev,
+ struct v4l2_device *vdev)
+{
+ int ret;
+
+ /* Register the subdev and video nodes. */
+ ret = v4l2_device_register_subdev(vdev, &prev->subdev);
+ if (ret < 0)
+ goto error;
+
+ ret = omap3isp_video_register(&prev->video_in, vdev);
+ if (ret < 0)
+ goto error;
+
+ ret = omap3isp_video_register(&prev->video_out, vdev);
+ if (ret < 0)
+ goto error;
+
+ return 0;
+
+error:
+ omap3isp_preview_unregister_entities(prev);
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP previewer initialisation and cleanup
+ */
+
+void omap3isp_preview_cleanup(struct isp_device *isp)
+{
+}
+
+/*
+ * isp_preview_init - Previewer initialization.
+ * @dev : Pointer to ISP device
+ * return -ENOMEM or zero on success
+ */
+int omap3isp_preview_init(struct isp_device *isp)
+{
+ struct isp_prev_device *prev = &isp->isp_prev;
+ int ret;
+
+ spin_lock_init(&prev->lock);
+ init_waitqueue_head(&prev->wait);
+ preview_init_params(prev);
+
+ ret = preview_init_entities(prev);
+ if (ret < 0)
+ goto out;
+
+out:
+ if (ret)
+ omap3isp_preview_cleanup(isp);
+
+ return ret;
+}
--- /dev/null
+/*
+ * isppreview.h
+ *
+ * TI OMAP3 ISP - Preview module
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef OMAP3_ISP_PREVIEW_H
+#define OMAP3_ISP_PREVIEW_H
+
+#include <linux/omap3isp.h>
+#include <linux/types.h>
+#include <media/v4l2-ctrls.h>
+
+#include "ispvideo.h"
+
+#define ISPPRV_BRIGHT_STEP 0x1
+#define ISPPRV_BRIGHT_DEF 0x0
+#define ISPPRV_BRIGHT_LOW 0x0
+#define ISPPRV_BRIGHT_HIGH 0xFF
+#define ISPPRV_BRIGHT_UNITS 0x1
+
+#define ISPPRV_CONTRAST_STEP 0x1
+#define ISPPRV_CONTRAST_DEF 0x10
+#define ISPPRV_CONTRAST_LOW 0x0
+#define ISPPRV_CONTRAST_HIGH 0xFF
+#define ISPPRV_CONTRAST_UNITS 0x1
+
+#define NO_AVE 0x0
+#define AVE_2_PIX 0x1
+#define AVE_4_PIX 0x2
+#define AVE_8_PIX 0x3
+
+/* Features list */
+#define PREV_LUMA_ENHANCE OMAP3ISP_PREV_LUMAENH
+#define PREV_INVERSE_ALAW OMAP3ISP_PREV_INVALAW
+#define PREV_HORZ_MEDIAN_FILTER OMAP3ISP_PREV_HRZ_MED
+#define PREV_CFA OMAP3ISP_PREV_CFA
+#define PREV_CHROMA_SUPPRESS OMAP3ISP_PREV_CHROMA_SUPP
+#define PREV_WB OMAP3ISP_PREV_WB
+#define PREV_BLKADJ OMAP3ISP_PREV_BLKADJ
+#define PREV_RGB2RGB OMAP3ISP_PREV_RGB2RGB
+#define PREV_COLOR_CONV OMAP3ISP_PREV_COLOR_CONV
+#define PREV_YCLIMITS OMAP3ISP_PREV_YC_LIMIT
+#define PREV_DEFECT_COR OMAP3ISP_PREV_DEFECT_COR
+#define PREV_GAMMA_BYPASS OMAP3ISP_PREV_GAMMABYPASS
+#define PREV_DARK_FRAME_CAPTURE OMAP3ISP_PREV_DRK_FRM_CAPTURE
+#define PREV_DARK_FRAME_SUBTRACT OMAP3ISP_PREV_DRK_FRM_SUBTRACT
+#define PREV_LENS_SHADING OMAP3ISP_PREV_LENS_SHADING
+#define PREV_NOISE_FILTER OMAP3ISP_PREV_NF
+#define PREV_GAMMA OMAP3ISP_PREV_GAMMA
+
+#define PREV_CONTRAST (1 << 17)
+#define PREV_BRIGHTNESS (1 << 18)
+#define PREV_AVERAGER (1 << 19)
+#define PREV_FEATURES_END (1 << 20)
+
+enum preview_input_entity {
+ PREVIEW_INPUT_NONE,
+ PREVIEW_INPUT_CCDC,
+ PREVIEW_INPUT_MEMORY,
+};
+
+#define PREVIEW_OUTPUT_RESIZER (1 << 1)
+#define PREVIEW_OUTPUT_MEMORY (1 << 2)
+
+/* Configure byte layout of YUV image */
+enum preview_ycpos_mode {
+ YCPOS_YCrYCb = 0,
+ YCPOS_YCbYCr = 1,
+ YCPOS_CbYCrY = 2,
+ YCPOS_CrYCbY = 3
+};
+
+/*
+ * struct prev_params - Structure for all configuration
+ * @features: Set of features enabled.
+ * @cfa: CFA coefficients.
+ * @csup: Chroma suppression coefficients.
+ * @luma: Luma enhancement coefficients.
+ * @nf: Noise filter coefficients.
+ * @dcor: Noise filter coefficients.
+ * @gamma: Gamma coefficients.
+ * @wbal: White Balance parameters.
+ * @blk_adj: Black adjustment parameters.
+ * @rgb2rgb: RGB blending parameters.
+ * @rgb2ycbcr: RGB to ycbcr parameters.
+ * @hmed: Horizontal median filter.
+ * @yclimit: YC limits parameters.
+ * @average: Downsampling rate for averager.
+ * @contrast: Contrast.
+ * @brightness: Brightness.
+ */
+struct prev_params {
+ u32 features;
+ struct omap3isp_prev_cfa cfa;
+ struct omap3isp_prev_csup csup;
+ struct omap3isp_prev_luma luma;
+ struct omap3isp_prev_nf nf;
+ struct omap3isp_prev_dcor dcor;
+ struct omap3isp_prev_gtables gamma;
+ struct omap3isp_prev_wbal wbal;
+ struct omap3isp_prev_blkadj blk_adj;
+ struct omap3isp_prev_rgbtorgb rgb2rgb;
+ struct omap3isp_prev_csc rgb2ycbcr;
+ struct omap3isp_prev_hmed hmed;
+ struct omap3isp_prev_yclimit yclimit;
+ u8 average;
+ u8 contrast;
+ u8 brightness;
+};
+
+/*
+ * struct isptables_update - Structure for Table Configuration.
+ * @update: Specifies which tables should be updated.
+ * @flag: Specifies which tables should be enabled.
+ * @nf: Pointer to structure for Noise Filter
+ * @lsc: Pointer to LSC gain table. (currently not used)
+ * @gamma: Pointer to gamma correction tables.
+ * @cfa: Pointer to color filter array configuration.
+ * @wbal: Pointer to colour and digital gain configuration.
+ */
+struct isptables_update {
+ u32 update;
+ u32 flag;
+ struct omap3isp_prev_nf *nf;
+ u32 *lsc;
+ struct omap3isp_prev_gtables *gamma;
+ struct omap3isp_prev_cfa *cfa;
+ struct omap3isp_prev_wbal *wbal;
+};
+
+/* Sink and source previewer pads */
+#define PREV_PAD_SINK 0
+#define PREV_PAD_SOURCE 1
+#define PREV_PADS_NUM 2
+
+/*
+ * struct isp_prev_device - Structure for storing ISP Preview module information
+ * @subdev: V4L2 subdevice
+ * @pads: Media entity pads
+ * @formats: Active formats at the subdev pad
+ * @input: Module currently connected to the input pad
+ * @output: Bitmask of the active output
+ * @video_in: Input video entity
+ * @video_out: Output video entity
+ * @error: A hardware error occured during capture
+ * @params: Module configuration data
+ * @shadow_update: If set, update the hardware configured in the next interrupt
+ * @underrun: Whether the preview entity has queued buffers on the output
+ * @state: Current preview pipeline state
+ * @lock: Shadow update lock
+ * @update: Bitmask of the parameters to be updated
+ *
+ * This structure is used to store the OMAP ISP Preview module Information.
+ */
+struct isp_prev_device {
+ struct v4l2_subdev subdev;
+ struct media_pad pads[PREV_PADS_NUM];
+ struct v4l2_mbus_framefmt formats[PREV_PADS_NUM];
+
+ struct v4l2_ctrl_handler ctrls;
+
+ enum preview_input_entity input;
+ unsigned int output;
+ struct isp_video video_in;
+ struct isp_video video_out;
+ unsigned int error;
+
+ struct prev_params params;
+ unsigned int shadow_update:1;
+ enum isp_pipeline_stream_state state;
+ wait_queue_head_t wait;
+ atomic_t stopping;
+ spinlock_t lock;
+ u32 update;
+};
+
+struct isp_device;
+
+int omap3isp_preview_init(struct isp_device *isp);
+void omap3isp_preview_cleanup(struct isp_device *isp);
+
+int omap3isp_preview_register_entities(struct isp_prev_device *prv,
+ struct v4l2_device *vdev);
+void omap3isp_preview_unregister_entities(struct isp_prev_device *prv);
+
+void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev);
+void omap3isp_preview_isr(struct isp_prev_device *prev);
+
+int omap3isp_preview_busy(struct isp_prev_device *isp_prev);
+
+void omap3isp_preview_restore_context(struct isp_device *isp);
+
+#endif /* OMAP3_ISP_PREVIEW_H */
--- /dev/null
+/*
+ * ispresizer.c
+ *
+ * TI OMAP3 ISP - Resizer module
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+
+#include "isp.h"
+#include "ispreg.h"
+#include "ispresizer.h"
+
+/*
+ * Resizer Constants
+ */
+#define MIN_RESIZE_VALUE 64
+#define MID_RESIZE_VALUE 512
+#define MAX_RESIZE_VALUE 1024
+
+#define MIN_IN_WIDTH 32
+#define MIN_IN_HEIGHT 32
+#define MAX_IN_WIDTH_MEMORY_MODE 4095
+#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES1 1280
+#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES2 4095
+#define MAX_IN_HEIGHT 4095
+
+#define MIN_OUT_WIDTH 16
+#define MIN_OUT_HEIGHT 2
+#define MAX_OUT_HEIGHT 4095
+
+/*
+ * Resizer Use Constraints
+ * "TRM ES3.1, table 12-46"
+ */
+#define MAX_4TAP_OUT_WIDTH_ES1 1280
+#define MAX_7TAP_OUT_WIDTH_ES1 640
+#define MAX_4TAP_OUT_WIDTH_ES2 3312
+#define MAX_7TAP_OUT_WIDTH_ES2 1650
+#define MAX_4TAP_OUT_WIDTH_3630 4096
+#define MAX_7TAP_OUT_WIDTH_3630 2048
+
+/*
+ * Constants for ratio calculation
+ */
+#define RESIZE_DIVISOR 256
+#define DEFAULT_PHASE 1
+
+/*
+ * Default (and only) configuration of filter coefficients.
+ * 7-tap mode is for scale factors 0.25x to 0.5x.
+ * 4-tap mode is for scale factors 0.5x to 4.0x.
+ * There shouldn't be any reason to recalculate these, EVER.
+ */
+static const struct isprsz_coef filter_coefs = {
+ /* For 8-phase 4-tap horizontal filter: */
+ {
+ 0x0000, 0x0100, 0x0000, 0x0000,
+ 0x03FA, 0x00F6, 0x0010, 0x0000,
+ 0x03F9, 0x00DB, 0x002C, 0x0000,
+ 0x03FB, 0x00B3, 0x0053, 0x03FF,
+ 0x03FD, 0x0082, 0x0084, 0x03FD,
+ 0x03FF, 0x0053, 0x00B3, 0x03FB,
+ 0x0000, 0x002C, 0x00DB, 0x03F9,
+ 0x0000, 0x0010, 0x00F6, 0x03FA
+ },
+ /* For 8-phase 4-tap vertical filter: */
+ {
+ 0x0000, 0x0100, 0x0000, 0x0000,
+ 0x03FA, 0x00F6, 0x0010, 0x0000,
+ 0x03F9, 0x00DB, 0x002C, 0x0000,
+ 0x03FB, 0x00B3, 0x0053, 0x03FF,
+ 0x03FD, 0x0082, 0x0084, 0x03FD,
+ 0x03FF, 0x0053, 0x00B3, 0x03FB,
+ 0x0000, 0x002C, 0x00DB, 0x03F9,
+ 0x0000, 0x0010, 0x00F6, 0x03FA
+ },
+ /* For 4-phase 7-tap horizontal filter: */
+ #define DUMMY 0
+ {
+ 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY,
+ 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY,
+ 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY,
+ 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY
+ },
+ /* For 4-phase 7-tap vertical filter: */
+ {
+ 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY,
+ 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY,
+ 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY,
+ 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY
+ }
+ /*
+ * The dummy padding is required in 7-tap mode because of how the
+ * registers are arranged physically.
+ */
+ #undef DUMMY
+};
+
+/*
+ * __resizer_get_format - helper function for getting resizer format
+ * @res : pointer to resizer private structure
+ * @pad : pad number
+ * @fh : V4L2 subdev file handle
+ * @which : wanted subdev format
+ * return zero
+ */
+static struct v4l2_mbus_framefmt *
+__resizer_get_format(struct isp_res_device *res, struct v4l2_subdev_fh *fh,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_format(fh, pad);
+ else
+ return &res->formats[pad];
+}
+
+/*
+ * __resizer_get_crop - helper function for getting resizer crop rectangle
+ * @res : pointer to resizer private structure
+ * @fh : V4L2 subdev file handle
+ * @which : wanted subdev crop rectangle
+ */
+static struct v4l2_rect *
+__resizer_get_crop(struct isp_res_device *res, struct v4l2_subdev_fh *fh,
+ enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_crop(fh, RESZ_PAD_SINK);
+ else
+ return &res->crop.request;
+}
+
+/*
+ * resizer_set_filters - Set resizer filters
+ * @res: Device context.
+ * @h_coeff: horizontal coefficient
+ * @v_coeff: vertical coefficient
+ * Return none
+ */
+static void resizer_set_filters(struct isp_res_device *res, const u16 *h_coeff,
+ const u16 *v_coeff)
+{
+ struct isp_device *isp = to_isp_device(res);
+ u32 startaddr_h, startaddr_v, tmp_h, tmp_v;
+ int i;
+
+ startaddr_h = ISPRSZ_HFILT10;
+ startaddr_v = ISPRSZ_VFILT10;
+
+ for (i = 0; i < COEFF_CNT; i += 2) {
+ tmp_h = h_coeff[i] |
+ (h_coeff[i + 1] << ISPRSZ_HFILT_COEF1_SHIFT);
+ tmp_v = v_coeff[i] |
+ (v_coeff[i + 1] << ISPRSZ_VFILT_COEF1_SHIFT);
+ isp_reg_writel(isp, tmp_h, OMAP3_ISP_IOMEM_RESZ, startaddr_h);
+ isp_reg_writel(isp, tmp_v, OMAP3_ISP_IOMEM_RESZ, startaddr_v);
+ startaddr_h += 4;
+ startaddr_v += 4;
+ }
+}
+
+/*
+ * resizer_set_bilinear - Chrominance horizontal algorithm select
+ * @res: Device context.
+ * @type: Filtering interpolation type.
+ *
+ * Filtering that is same as luminance processing is
+ * intended only for downsampling, and bilinear interpolation
+ * is intended only for upsampling.
+ */
+static void resizer_set_bilinear(struct isp_res_device *res,
+ enum resizer_chroma_algo type)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ if (type == RSZ_BILINEAR)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_CBILIN);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_CBILIN);
+}
+
+/*
+ * resizer_set_ycpos - Luminance and chrominance order
+ * @res: Device context.
+ * @order: order type.
+ */
+static void resizer_set_ycpos(struct isp_res_device *res,
+ enum v4l2_mbus_pixelcode pixelcode)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ switch (pixelcode) {
+ case V4L2_MBUS_FMT_YUYV8_1X16:
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_YCPOS);
+ break;
+ case V4L2_MBUS_FMT_UYVY8_1X16:
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_YCPOS);
+ break;
+ default:
+ return;
+ }
+}
+
+/*
+ * resizer_set_phase - Setup horizontal and vertical starting phase
+ * @res: Device context.
+ * @h_phase: horizontal phase parameters.
+ * @v_phase: vertical phase parameters.
+ *
+ * Horizontal and vertical phase range is 0 to 7
+ */
+static void resizer_set_phase(struct isp_res_device *res, u32 h_phase,
+ u32 v_phase)
+{
+ struct isp_device *isp = to_isp_device(res);
+ u32 rgval = 0;
+
+ rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
+ ~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK);
+ rgval |= (h_phase << ISPRSZ_CNT_HSTPH_SHIFT) & ISPRSZ_CNT_HSTPH_MASK;
+ rgval |= (v_phase << ISPRSZ_CNT_VSTPH_SHIFT) & ISPRSZ_CNT_VSTPH_MASK;
+
+ isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT);
+}
+
+/*
+ * resizer_set_luma - Setup luminance enhancer parameters
+ * @res: Device context.
+ * @luma: Structure for luminance enhancer parameters.
+ *
+ * Algorithm select:
+ * 0x0: Disable
+ * 0x1: [-1 2 -1]/2 high-pass filter
+ * 0x2: [-1 -2 6 -2 -1]/4 high-pass filter
+ *
+ * Maximum gain:
+ * The data is coded in U4Q4 representation.
+ *
+ * Slope:
+ * The data is coded in U4Q4 representation.
+ *
+ * Coring offset:
+ * The data is coded in U8Q0 representation.
+ *
+ * The new luminance value is computed as:
+ * Y += HPF(Y) x max(GAIN, (HPF(Y) - CORE) x SLOP + 8) >> 4.
+ */
+static void resizer_set_luma(struct isp_res_device *res,
+ struct resizer_luma_yenh *luma)
+{
+ struct isp_device *isp = to_isp_device(res);
+ u32 rgval = 0;
+
+ rgval = (luma->algo << ISPRSZ_YENH_ALGO_SHIFT)
+ & ISPRSZ_YENH_ALGO_MASK;
+ rgval |= (luma->gain << ISPRSZ_YENH_GAIN_SHIFT)
+ & ISPRSZ_YENH_GAIN_MASK;
+ rgval |= (luma->slope << ISPRSZ_YENH_SLOP_SHIFT)
+ & ISPRSZ_YENH_SLOP_MASK;
+ rgval |= (luma->core << ISPRSZ_YENH_CORE_SHIFT)
+ & ISPRSZ_YENH_CORE_MASK;
+
+ isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH);
+}
+
+/*
+ * resizer_set_source - Input source select
+ * @res: Device context.
+ * @source: Input source type
+ *
+ * If this field is set to RESIZER_INPUT_VP, the resizer input is fed from
+ * Preview/CCDC engine, otherwise from memory.
+ */
+static void resizer_set_source(struct isp_res_device *res,
+ enum resizer_input_entity source)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ if (source == RESIZER_INPUT_MEMORY)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_INPSRC);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_INPSRC);
+}
+
+/*
+ * resizer_set_ratio - Setup horizontal and vertical resizing value
+ * @res: Device context.
+ * @ratio: Structure for ratio parameters.
+ *
+ * Resizing range from 64 to 1024
+ */
+static void resizer_set_ratio(struct isp_res_device *res,
+ const struct resizer_ratio *ratio)
+{
+ struct isp_device *isp = to_isp_device(res);
+ const u16 *h_filter, *v_filter;
+ u32 rgval = 0;
+
+ rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
+ ~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK);
+ rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT)
+ & ISPRSZ_CNT_HRSZ_MASK;
+ rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT)
+ & ISPRSZ_CNT_VRSZ_MASK;
+ isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT);
+
+ /* prepare horizontal filter coefficients */
+ if (ratio->horz > MID_RESIZE_VALUE)
+ h_filter = &filter_coefs.h_filter_coef_7tap[0];
+ else
+ h_filter = &filter_coefs.h_filter_coef_4tap[0];
+
+ /* prepare vertical filter coefficients */
+ if (ratio->vert > MID_RESIZE_VALUE)
+ v_filter = &filter_coefs.v_filter_coef_7tap[0];
+ else
+ v_filter = &filter_coefs.v_filter_coef_4tap[0];
+
+ resizer_set_filters(res, h_filter, v_filter);
+}
+
+/*
+ * resizer_set_dst_size - Setup the output height and width
+ * @res: Device context.
+ * @width: Output width.
+ * @height: Output height.
+ *
+ * Width :
+ * The value must be EVEN.
+ *
+ * Height:
+ * The number of bytes written to SDRAM must be
+ * a multiple of 16-bytes if the vertical resizing factor
+ * is greater than 1x (upsizing)
+ */
+static void resizer_set_output_size(struct isp_res_device *res,
+ u32 width, u32 height)
+{
+ struct isp_device *isp = to_isp_device(res);
+ u32 rgval = 0;
+
+ dev_dbg(isp->dev, "Output size[w/h]: %dx%d\n", width, height);
+ rgval = (width << ISPRSZ_OUT_SIZE_HORZ_SHIFT)
+ & ISPRSZ_OUT_SIZE_HORZ_MASK;
+ rgval |= (height << ISPRSZ_OUT_SIZE_VERT_SHIFT)
+ & ISPRSZ_OUT_SIZE_VERT_MASK;
+ isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE);
+}
+
+/*
+ * resizer_set_output_offset - Setup memory offset for the output lines.
+ * @res: Device context.
+ * @offset: Memory offset.
+ *
+ * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte
+ * boundary; the 5 LSBs are read-only. For optimal use of SDRAM bandwidth,
+ * the SDRAM line offset must be set on a 256-byte boundary
+ */
+static void resizer_set_output_offset(struct isp_res_device *res, u32 offset)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF);
+}
+
+/*
+ * resizer_set_start - Setup vertical and horizontal start position
+ * @res: Device context.
+ * @left: Horizontal start position.
+ * @top: Vertical start position.
+ *
+ * Vertical start line:
+ * This field makes sense only when the resizer obtains its input
+ * from the preview engine/CCDC
+ *
+ * Horizontal start pixel:
+ * Pixels are coded on 16 bits for YUV and 8 bits for color separate data.
+ * When the resizer gets its input from SDRAM, this field must be set
+ * to <= 15 for YUV 16-bit data and <= 31 for 8-bit color separate data
+ */
+static void resizer_set_start(struct isp_res_device *res, u32 left, u32 top)
+{
+ struct isp_device *isp = to_isp_device(res);
+ u32 rgval = 0;
+
+ rgval = (left << ISPRSZ_IN_START_HORZ_ST_SHIFT)
+ & ISPRSZ_IN_START_HORZ_ST_MASK;
+ rgval |= (top << ISPRSZ_IN_START_VERT_ST_SHIFT)
+ & ISPRSZ_IN_START_VERT_ST_MASK;
+
+ isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START);
+}
+
+/*
+ * resizer_set_input_size - Setup the input size
+ * @res: Device context.
+ * @width: The range is 0 to 4095 pixels
+ * @height: The range is 0 to 4095 lines
+ */
+static void resizer_set_input_size(struct isp_res_device *res,
+ u32 width, u32 height)
+{
+ struct isp_device *isp = to_isp_device(res);
+ u32 rgval = 0;
+
+ dev_dbg(isp->dev, "Input size[w/h]: %dx%d\n", width, height);
+
+ rgval = (width << ISPRSZ_IN_SIZE_HORZ_SHIFT)
+ & ISPRSZ_IN_SIZE_HORZ_MASK;
+ rgval |= (height << ISPRSZ_IN_SIZE_VERT_SHIFT)
+ & ISPRSZ_IN_SIZE_VERT_MASK;
+
+ isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE);
+}
+
+/*
+ * resizer_set_src_offs - Setup the memory offset for the input lines
+ * @res: Device context.
+ * @offset: Memory offset.
+ *
+ * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte
+ * boundary; the 5 LSBs are read-only. This field must be programmed to be
+ * 0x0 if the resizer input is from preview engine/CCDC.
+ */
+static void resizer_set_input_offset(struct isp_res_device *res, u32 offset)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF);
+}
+
+/*
+ * resizer_set_intype - Input type select
+ * @res: Device context.
+ * @type: Pixel format type.
+ */
+static void resizer_set_intype(struct isp_res_device *res,
+ enum resizer_colors_type type)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ if (type == RSZ_COLOR8)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_INPTYP);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
+ ISPRSZ_CNT_INPTYP);
+}
+
+/*
+ * __resizer_set_inaddr - Helper function for set input address
+ * @res : pointer to resizer private data structure
+ * @addr: input address
+ * return none
+ */
+static void __resizer_set_inaddr(struct isp_res_device *res, u32 addr)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD);
+}
+
+/*
+ * The data rate at the horizontal resizer output must not exceed half the
+ * functional clock or 100 MP/s, whichever is lower. According to the TRM
+ * there's no similar requirement for the vertical resizer output. However
+ * experience showed that vertical upscaling by 4 leads to SBL overflows (with
+ * data rates at the resizer output exceeding 300 MP/s). Limiting the resizer
+ * output data rate to the functional clock or 200 MP/s, whichever is lower,
+ * seems to get rid of SBL overflows.
+ *
+ * The maximum data rate at the output of the horizontal resizer can thus be
+ * computed with
+ *
+ * max intermediate rate <= L3 clock * input height / output height
+ * max intermediate rate <= L3 clock / 2
+ *
+ * The maximum data rate at the resizer input is then
+ *
+ * max input rate <= max intermediate rate * input width / output width
+ *
+ * where the input width and height are the resizer input crop rectangle size.
+ * The TRM doesn't clearly explain if that's a maximum instant data rate or a
+ * maximum average data rate.
+ */
+void omap3isp_resizer_max_rate(struct isp_res_device *res,
+ unsigned int *max_rate)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity);
+ const struct v4l2_mbus_framefmt *ofmt = &res->formats[RESZ_PAD_SOURCE];
+ unsigned long limit = min(pipe->l3_ick, 200000000UL);
+ unsigned long clock;
+
+ clock = div_u64((u64)limit * res->crop.active.height, ofmt->height);
+ clock = min(clock, limit / 2);
+ *max_rate = div_u64((u64)clock * res->crop.active.width, ofmt->width);
+}
+
+/*
+ * When the resizer processes images from memory, the driver must slow down read
+ * requests on the input to at least comply with the internal data rate
+ * requirements. If the application real-time requirements can cope with slower
+ * processing, the resizer can be slowed down even more to put less pressure on
+ * the overall system.
+ *
+ * When the resizer processes images on the fly (either from the CCDC or the
+ * preview module), the same data rate requirements apply but they can't be
+ * enforced at the resizer level. The image input module (sensor, CCP2 or
+ * preview module) must not provide image data faster than the resizer can
+ * process.
+ *
+ * For live image pipelines, the data rate is set by the frame format, size and
+ * rate. The sensor output frame rate must not exceed the maximum resizer data
+ * rate.
+ *
+ * The resizer slows down read requests by inserting wait cycles in the SBL
+ * requests. The maximum number of 256-byte requests per second can be computed
+ * as (the data rate is multiplied by 2 to convert from pixels per second to
+ * bytes per second)
+ *
+ * request per second = data rate * 2 / 256
+ * cycles per request = cycles per second / requests per second
+ *
+ * The number of cycles per second is controlled by the L3 clock, leading to
+ *
+ * cycles per request = L3 frequency / 2 * 256 / data rate
+ */
+static void resizer_adjust_bandwidth(struct isp_res_device *res)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity);
+ struct isp_device *isp = to_isp_device(res);
+ unsigned long l3_ick = pipe->l3_ick;
+ struct v4l2_fract *timeperframe;
+ unsigned int cycles_per_frame;
+ unsigned int requests_per_frame;
+ unsigned int cycles_per_request;
+ unsigned int granularity;
+ unsigned int minimum;
+ unsigned int maximum;
+ unsigned int value;
+
+ if (res->input != RESIZER_INPUT_MEMORY) {
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
+ ISPSBL_SDR_REQ_RSZ_EXP_MASK);
+ return;
+ }
+
+ switch (isp->revision) {
+ case ISP_REVISION_1_0:
+ case ISP_REVISION_2_0:
+ default:
+ granularity = 1024;
+ break;
+
+ case ISP_REVISION_15_0:
+ granularity = 32;
+ break;
+ }
+
+ /* Compute the minimum number of cycles per request, based on the
+ * pipeline maximum data rate. This is an absolute lower bound if we
+ * don't want SBL overflows, so round the value up.
+ */
+ cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1,
+ pipe->max_rate);
+ minimum = DIV_ROUND_UP(cycles_per_request, granularity);
+
+ /* Compute the maximum number of cycles per request, based on the
+ * requested frame rate. This is a soft upper bound to achieve a frame
+ * rate equal or higher than the requested value, so round the value
+ * down.
+ */
+ timeperframe = &pipe->max_timeperframe;
+
+ requests_per_frame = DIV_ROUND_UP(res->crop.active.width * 2, 256)
+ * res->crop.active.height;
+ cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator,
+ timeperframe->denominator);
+ cycles_per_request = cycles_per_frame / requests_per_frame;
+
+ maximum = cycles_per_request / granularity;
+
+ value = max(minimum, maximum);
+
+ dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value);
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
+ ISPSBL_SDR_REQ_RSZ_EXP_MASK,
+ value << ISPSBL_SDR_REQ_RSZ_EXP_SHIFT);
+}
+
+/*
+ * omap3isp_resizer_busy - Checks if ISP resizer is busy.
+ *
+ * Returns busy field from ISPRSZ_PCR register.
+ */
+int omap3isp_resizer_busy(struct isp_res_device *res)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ return isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) &
+ ISPRSZ_PCR_BUSY;
+}
+
+/*
+ * resizer_set_inaddr - Sets the memory address of the input frame.
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ */
+static void resizer_set_inaddr(struct isp_res_device *res, u32 addr)
+{
+ res->addr_base = addr;
+
+ /* This will handle crop settings in stream off state */
+ if (res->crop_offset)
+ addr += res->crop_offset & ~0x1f;
+
+ __resizer_set_inaddr(res, addr);
+}
+
+/*
+ * Configures the memory address to which the output frame is written.
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ * Note: For SBL efficiency reasons the address should be on a 256-byte
+ * boundary.
+ */
+static void resizer_set_outaddr(struct isp_res_device *res, u32 addr)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ /*
+ * Set output address. This needs to be in its own function
+ * because it changes often.
+ */
+ isp_reg_writel(isp, addr << ISPRSZ_SDR_OUTADD_ADDR_SHIFT,
+ OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD);
+}
+
+/*
+ * resizer_print_status - Prints the values of the resizer module registers.
+ */
+#define RSZ_PRINT_REGISTER(isp, name)\
+ dev_dbg(isp->dev, "###RSZ " #name "=0x%08x\n", \
+ isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_##name))
+
+static void resizer_print_status(struct isp_res_device *res)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ dev_dbg(isp->dev, "-------------Resizer Register dump----------\n");
+
+ RSZ_PRINT_REGISTER(isp, PCR);
+ RSZ_PRINT_REGISTER(isp, CNT);
+ RSZ_PRINT_REGISTER(isp, OUT_SIZE);
+ RSZ_PRINT_REGISTER(isp, IN_START);
+ RSZ_PRINT_REGISTER(isp, IN_SIZE);
+ RSZ_PRINT_REGISTER(isp, SDR_INADD);
+ RSZ_PRINT_REGISTER(isp, SDR_INOFF);
+ RSZ_PRINT_REGISTER(isp, SDR_OUTADD);
+ RSZ_PRINT_REGISTER(isp, SDR_OUTOFF);
+ RSZ_PRINT_REGISTER(isp, YENH);
+
+ dev_dbg(isp->dev, "--------------------------------------------\n");
+}
+
+/*
+ * resizer_calc_ratios - Helper function for calculate resizer ratios
+ * @res: pointer to resizer private data structure
+ * @input: input frame size
+ * @output: output frame size
+ * @ratio : return calculated ratios
+ * return none
+ *
+ * The resizer uses a polyphase sample rate converter. The upsampling filter
+ * has a fixed number of phases that depend on the resizing ratio. As the ratio
+ * computation depends on the number of phases, we need to compute a first
+ * approximation and then refine it.
+ *
+ * The input/output/ratio relationship is given by the OMAP34xx TRM:
+ *
+ * - 8-phase, 4-tap mode (RSZ = 64 ~ 512)
+ * iw = (32 * sph + (ow - 1) * hrsz + 16) >> 8 + 7
+ * ih = (32 * spv + (oh - 1) * vrsz + 16) >> 8 + 4
+ * - 4-phase, 7-tap mode (RSZ = 513 ~ 1024)
+ * iw = (64 * sph + (ow - 1) * hrsz + 32) >> 8 + 7
+ * ih = (64 * spv + (oh - 1) * vrsz + 32) >> 8 + 7
+ *
+ * iw and ih are the input width and height after cropping. Those equations need
+ * to be satisfied exactly for the resizer to work correctly.
+ *
+ * Reverting the equations, we can compute the resizing ratios with
+ *
+ * - 8-phase, 4-tap mode
+ * hrsz = ((iw - 7) * 256 - 16 - 32 * sph) / (ow - 1)
+ * vrsz = ((ih - 4) * 256 - 16 - 32 * spv) / (oh - 1)
+ * - 4-phase, 7-tap mode
+ * hrsz = ((iw - 7) * 256 - 32 - 64 * sph) / (ow - 1)
+ * vrsz = ((ih - 7) * 256 - 32 - 64 * spv) / (oh - 1)
+ *
+ * The ratios are integer values, and must be rounded down to ensure that the
+ * cropped input size is not bigger than the uncropped input size. As the ratio
+ * in 7-tap mode is always smaller than the ratio in 4-tap mode, we can use the
+ * 7-tap mode equations to compute a ratio approximation.
+ *
+ * We first clamp the output size according to the hardware capabilitie to avoid
+ * auto-cropping the input more than required to satisfy the TRM equations. The
+ * minimum output size is achieved with a scaling factor of 1024. It is thus
+ * computed using the 7-tap equations.
+ *
+ * min ow = ((iw - 7) * 256 - 32 - 64 * sph) / 1024 + 1
+ * min oh = ((ih - 7) * 256 - 32 - 64 * spv) / 1024 + 1
+ *
+ * Similarly, the maximum output size is achieved with a scaling factor of 64
+ * and computed using the 4-tap equations.
+ *
+ * max ow = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / 64 + 1
+ * max oh = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1
+ *
+ * The additional +255 term compensates for the round down operation performed
+ * by the TRM equations when shifting the value right by 8 bits.
+ *
+ * We then compute and clamp the ratios (x1/4 ~ x4). Clamping the output size to
+ * the maximum value guarantees that the ratio value will never be smaller than
+ * the minimum, but it could still slightly exceed the maximum. Clamping the
+ * ratio will thus result in a resizing factor slightly larger than the
+ * requested value.
+ *
+ * To accomodate that, and make sure the TRM equations are satisfied exactly, we
+ * compute the input crop rectangle as the last step.
+ *
+ * As if the situation wasn't complex enough, the maximum output width depends
+ * on the vertical resizing ratio. Fortunately, the output height doesn't
+ * depend on the horizontal resizing ratio. We can then start by computing the
+ * output height and the vertical ratio, and then move to computing the output
+ * width and the horizontal ratio.
+ */
+static void resizer_calc_ratios(struct isp_res_device *res,
+ struct v4l2_rect *input,
+ struct v4l2_mbus_framefmt *output,
+ struct resizer_ratio *ratio)
+{
+ struct isp_device *isp = to_isp_device(res);
+ const unsigned int spv = DEFAULT_PHASE;
+ const unsigned int sph = DEFAULT_PHASE;
+ unsigned int upscaled_width;
+ unsigned int upscaled_height;
+ unsigned int min_width;
+ unsigned int min_height;
+ unsigned int max_width;
+ unsigned int max_height;
+ unsigned int width_alignment;
+
+ /*
+ * Clamp the output height based on the hardware capabilities and
+ * compute the vertical resizing ratio.
+ */
+ min_height = ((input->height - 7) * 256 - 32 - 64 * spv) / 1024 + 1;
+ min_height = max_t(unsigned int, min_height, MIN_OUT_HEIGHT);
+ max_height = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1;
+ max_height = min_t(unsigned int, max_height, MAX_OUT_HEIGHT);
+ output->height = clamp(output->height, min_height, max_height);
+
+ ratio->vert = ((input->height - 7) * 256 - 32 - 64 * spv)
+ / (output->height - 1);
+ ratio->vert = clamp_t(unsigned int, ratio->vert,
+ MIN_RESIZE_VALUE, MAX_RESIZE_VALUE);
+
+ if (ratio->vert <= MID_RESIZE_VALUE) {
+ upscaled_height = (output->height - 1) * ratio->vert
+ + 32 * spv + 16;
+ input->height = (upscaled_height >> 8) + 4;
+ } else {
+ upscaled_height = (output->height - 1) * ratio->vert
+ + 64 * spv + 32;
+ input->height = (upscaled_height >> 8) + 7;
+ }
+
+ /*
+ * Compute the minimum and maximum output widths based on the hardware
+ * capabilities. The maximum depends on the vertical resizing ratio.
+ */
+ min_width = ((input->width - 7) * 256 - 32 - 64 * sph) / 1024 + 1;
+ min_width = max_t(unsigned int, min_width, MIN_OUT_WIDTH);
+
+ if (ratio->vert <= MID_RESIZE_VALUE) {
+ switch (isp->revision) {
+ case ISP_REVISION_1_0:
+ max_width = MAX_4TAP_OUT_WIDTH_ES1;
+ break;
+
+ case ISP_REVISION_2_0:
+ default:
+ max_width = MAX_4TAP_OUT_WIDTH_ES2;
+ break;
+
+ case ISP_REVISION_15_0:
+ max_width = MAX_4TAP_OUT_WIDTH_3630;
+ break;
+ }
+ } else {
+ switch (isp->revision) {
+ case ISP_REVISION_1_0:
+ max_width = MAX_7TAP_OUT_WIDTH_ES1;
+ break;
+
+ case ISP_REVISION_2_0:
+ default:
+ max_width = MAX_7TAP_OUT_WIDTH_ES2;
+ break;
+
+ case ISP_REVISION_15_0:
+ max_width = MAX_7TAP_OUT_WIDTH_3630;
+ break;
+ }
+ }
+ max_width = min(((input->width - 7) * 256 + 255 - 16 - 32 * sph) / 64
+ + 1, max_width);
+
+ /*
+ * The output width must be even, and must be a multiple of 16 bytes
+ * when upscaling vertically. Clamp the output width to the valid range.
+ * Take the alignment into account (the maximum width in 7-tap mode on
+ * ES2 isn't a multiple of 8) and align the result up to make sure it
+ * won't be smaller than the minimum.
+ */
+ width_alignment = ratio->vert < 256 ? 8 : 2;
+ output->width = clamp(output->width, min_width,
+ max_width & ~(width_alignment - 1));
+ output->width = ALIGN(output->width, width_alignment);
+
+ ratio->horz = ((input->width - 7) * 256 - 32 - 64 * sph)
+ / (output->width - 1);
+ ratio->horz = clamp_t(unsigned int, ratio->horz,
+ MIN_RESIZE_VALUE, MAX_RESIZE_VALUE);
+
+ if (ratio->horz <= MID_RESIZE_VALUE) {
+ upscaled_width = (output->width - 1) * ratio->horz
+ + 32 * sph + 16;
+ input->width = (upscaled_width >> 8) + 7;
+ } else {
+ upscaled_width = (output->width - 1) * ratio->horz
+ + 64 * sph + 32;
+ input->width = (upscaled_width >> 8) + 7;
+ }
+}
+
+/*
+ * resizer_set_crop_params - Setup hardware with cropping parameters
+ * @res : resizer private structure
+ * @crop_rect : current crop rectangle
+ * @ratio : resizer ratios
+ * return none
+ */
+static void resizer_set_crop_params(struct isp_res_device *res,
+ const struct v4l2_mbus_framefmt *input,
+ const struct v4l2_mbus_framefmt *output)
+{
+ resizer_set_ratio(res, &res->ratio);
+
+ /* Set chrominance horizontal algorithm */
+ if (res->ratio.horz >= RESIZE_DIVISOR)
+ resizer_set_bilinear(res, RSZ_THE_SAME);
+ else
+ resizer_set_bilinear(res, RSZ_BILINEAR);
+
+ resizer_adjust_bandwidth(res);
+
+ if (res->input == RESIZER_INPUT_MEMORY) {
+ /* Calculate additional offset for crop */
+ res->crop_offset = (res->crop.active.top * input->width +
+ res->crop.active.left) * 2;
+ /*
+ * Write lowest 4 bits of horizontal pixel offset (in pixels),
+ * vertical start must be 0.
+ */
+ resizer_set_start(res, (res->crop_offset / 2) & 0xf, 0);
+
+ /*
+ * Set start (read) address for cropping, in bytes.
+ * Lowest 5 bits must be zero.
+ */
+ __resizer_set_inaddr(res,
+ res->addr_base + (res->crop_offset & ~0x1f));
+ } else {
+ /*
+ * Set vertical start line and horizontal starting pixel.
+ * If the input is from CCDC/PREV, horizontal start field is
+ * in bytes (twice number of pixels).
+ */
+ resizer_set_start(res, res->crop.active.left * 2,
+ res->crop.active.top);
+ /* Input address and offset must be 0 for preview/ccdc input */
+ __resizer_set_inaddr(res, 0);
+ resizer_set_input_offset(res, 0);
+ }
+
+ /* Set the input size */
+ resizer_set_input_size(res, res->crop.active.width,
+ res->crop.active.height);
+}
+
+static void resizer_configure(struct isp_res_device *res)
+{
+ struct v4l2_mbus_framefmt *informat, *outformat;
+ struct resizer_luma_yenh luma = {0, 0, 0, 0};
+
+ resizer_set_source(res, res->input);
+
+ informat = &res->formats[RESZ_PAD_SINK];
+ outformat = &res->formats[RESZ_PAD_SOURCE];
+
+ /* RESZ_PAD_SINK */
+ if (res->input == RESIZER_INPUT_VP)
+ resizer_set_input_offset(res, 0);
+ else
+ resizer_set_input_offset(res, ALIGN(informat->width, 0x10) * 2);
+
+ /* YUV422 interleaved, default phase, no luma enhancement */
+ resizer_set_intype(res, RSZ_YUV422);
+ resizer_set_ycpos(res, informat->code);
+ resizer_set_phase(res, DEFAULT_PHASE, DEFAULT_PHASE);
+ resizer_set_luma(res, &luma);
+
+ /* RESZ_PAD_SOURCE */
+ resizer_set_output_offset(res, ALIGN(outformat->width * 2, 32));
+ resizer_set_output_size(res, outformat->width, outformat->height);
+
+ resizer_set_crop_params(res, informat, outformat);
+}
+
+/* -----------------------------------------------------------------------------
+ * Interrupt handling
+ */
+
+static void resizer_enable_oneshot(struct isp_res_device *res)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR,
+ ISPRSZ_PCR_ENABLE | ISPRSZ_PCR_ONESHOT);
+}
+
+void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res)
+{
+ /*
+ * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun
+ * condition, the module was paused and now we have a buffer queued
+ * on the output again. Restart the pipeline if running in continuous
+ * mode.
+ */
+ if (res->state == ISP_PIPELINE_STREAM_CONTINUOUS &&
+ res->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
+ resizer_enable_oneshot(res);
+ isp_video_dmaqueue_flags_clr(&res->video_out);
+ }
+}
+
+static void resizer_isr_buffer(struct isp_res_device *res)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity);
+ struct isp_buffer *buffer;
+ int restart = 0;
+
+ if (res->state == ISP_PIPELINE_STREAM_STOPPED)
+ return;
+
+ /* Complete the output buffer and, if reading from memory, the input
+ * buffer.
+ */
+ buffer = omap3isp_video_buffer_next(&res->video_out, res->error);
+ if (buffer != NULL) {
+ resizer_set_outaddr(res, buffer->isp_addr);
+ restart = 1;
+ }
+
+ pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
+
+ if (res->input == RESIZER_INPUT_MEMORY) {
+ buffer = omap3isp_video_buffer_next(&res->video_in, 0);
+ if (buffer != NULL)
+ resizer_set_inaddr(res, buffer->isp_addr);
+ pipe->state |= ISP_PIPELINE_IDLE_INPUT;
+ }
+
+ if (res->state == ISP_PIPELINE_STREAM_SINGLESHOT) {
+ if (isp_pipeline_ready(pipe))
+ omap3isp_pipeline_set_stream(pipe,
+ ISP_PIPELINE_STREAM_SINGLESHOT);
+ } else {
+ /* If an underrun occurs, the video queue operation handler will
+ * restart the resizer. Otherwise restart it immediately.
+ */
+ if (restart)
+ resizer_enable_oneshot(res);
+ }
+
+ res->error = 0;
+}
+
+/*
+ * omap3isp_resizer_isr - ISP resizer interrupt handler
+ *
+ * Manage the resizer video buffers and configure shadowed and busy-locked
+ * registers.
+ */
+void omap3isp_resizer_isr(struct isp_res_device *res)
+{
+ struct v4l2_mbus_framefmt *informat, *outformat;
+
+ if (omap3isp_module_sync_is_stopping(&res->wait, &res->stopping))
+ return;
+
+ if (res->applycrop) {
+ outformat = __resizer_get_format(res, NULL, RESZ_PAD_SOURCE,
+ V4L2_SUBDEV_FORMAT_ACTIVE);
+ informat = __resizer_get_format(res, NULL, RESZ_PAD_SINK,
+ V4L2_SUBDEV_FORMAT_ACTIVE);
+ resizer_set_crop_params(res, informat, outformat);
+ res->applycrop = 0;
+ }
+
+ resizer_isr_buffer(res);
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP video operations
+ */
+
+static int resizer_video_queue(struct isp_video *video,
+ struct isp_buffer *buffer)
+{
+ struct isp_res_device *res = &video->isp->isp_res;
+
+ if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ resizer_set_inaddr(res, buffer->isp_addr);
+
+ /*
+ * We now have a buffer queued on the output. Despite what the
+ * TRM says, the resizer can't be restarted immediately.
+ * Enabling it in one shot mode in the middle of a frame (or at
+ * least asynchronously to the frame) results in the output
+ * being shifted randomly left/right and up/down, as if the
+ * hardware didn't synchronize itself to the beginning of the
+ * frame correctly.
+ *
+ * Restart the resizer on the next sync interrupt if running in
+ * continuous mode or when starting the stream.
+ */
+ if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ resizer_set_outaddr(res, buffer->isp_addr);
+
+ return 0;
+}
+
+static const struct isp_video_operations resizer_video_ops = {
+ .queue = resizer_video_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 subdev operations
+ */
+
+/*
+ * resizer_set_stream - Enable/Disable streaming on resizer subdev
+ * @sd: ISP resizer V4L2 subdev
+ * @enable: 1 == Enable, 0 == Disable
+ *
+ * The resizer hardware can't be enabled without a memory buffer to write to.
+ * As the s_stream operation is called in response to a STREAMON call without
+ * any buffer queued yet, just update the state field and return immediately.
+ * The resizer will be enabled in resizer_video_queue().
+ */
+static int resizer_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct isp_video *video_out = &res->video_out;
+ struct isp_device *isp = to_isp_device(res);
+ struct device *dev = to_device(res);
+
+ if (res->state == ISP_PIPELINE_STREAM_STOPPED) {
+ if (enable == ISP_PIPELINE_STREAM_STOPPED)
+ return 0;
+
+ omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_RESIZER);
+ resizer_configure(res);
+ res->error = 0;
+ resizer_print_status(res);
+ }
+
+ switch (enable) {
+ case ISP_PIPELINE_STREAM_CONTINUOUS:
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE);
+ if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
+ resizer_enable_oneshot(res);
+ isp_video_dmaqueue_flags_clr(video_out);
+ }
+ break;
+
+ case ISP_PIPELINE_STREAM_SINGLESHOT:
+ if (res->input == RESIZER_INPUT_MEMORY)
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_READ);
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE);
+
+ resizer_enable_oneshot(res);
+ break;
+
+ case ISP_PIPELINE_STREAM_STOPPED:
+ if (omap3isp_module_sync_idle(&sd->entity, &res->wait,
+ &res->stopping))
+ dev_dbg(dev, "%s: module stop timeout.\n", sd->name);
+ omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_RESIZER_READ |
+ OMAP3_ISP_SBL_RESIZER_WRITE);
+ omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_RESIZER);
+ isp_video_dmaqueue_flags_clr(video_out);
+ break;
+ }
+
+ res->state = enable;
+ return 0;
+}
+
+/*
+ * resizer_g_crop - handle get crop subdev operation
+ * @sd : pointer to v4l2 subdev structure
+ * @pad : subdev pad
+ * @crop : pointer to crop structure
+ * @which : active or try format
+ * return zero
+ */
+static int resizer_g_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_crop *crop)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+ struct resizer_ratio ratio;
+
+ /* Only sink pad has crop capability */
+ if (crop->pad != RESZ_PAD_SINK)
+ return -EINVAL;
+
+ format = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, crop->which);
+ crop->rect = *__resizer_get_crop(res, fh, crop->which);
+ resizer_calc_ratios(res, &crop->rect, format, &ratio);
+
+ return 0;
+}
+
+/*
+ * resizer_try_crop - mangles crop parameters.
+ */
+static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink,
+ const struct v4l2_mbus_framefmt *source,
+ struct v4l2_rect *crop)
+{
+ const unsigned int spv = DEFAULT_PHASE;
+ const unsigned int sph = DEFAULT_PHASE;
+
+ /* Crop rectangle is constrained to the output size so that zoom ratio
+ * cannot exceed +/-4.0.
+ */
+ unsigned int min_width =
+ ((32 * sph + (source->width - 1) * 64 + 16) >> 8) + 7;
+ unsigned int min_height =
+ ((32 * spv + (source->height - 1) * 64 + 16) >> 8) + 4;
+ unsigned int max_width =
+ ((64 * sph + (source->width - 1) * 1024 + 32) >> 8) + 7;
+ unsigned int max_height =
+ ((64 * spv + (source->height - 1) * 1024 + 32) >> 8) + 7;
+
+ crop->width = clamp_t(u32, crop->width, min_width, max_width);
+ crop->height = clamp_t(u32, crop->height, min_height, max_height);
+
+ /* Crop can not go beyond of the input rectangle */
+ crop->left = clamp_t(u32, crop->left, 0, sink->width - MIN_IN_WIDTH);
+ crop->width = clamp_t(u32, crop->width, MIN_IN_WIDTH,
+ sink->width - crop->left);
+ crop->top = clamp_t(u32, crop->top, 0, sink->height - MIN_IN_HEIGHT);
+ crop->height = clamp_t(u32, crop->height, MIN_IN_HEIGHT,
+ sink->height - crop->top);
+}
+
+/*
+ * resizer_s_crop - handle set crop subdev operation
+ * @sd : pointer to v4l2 subdev structure
+ * @pad : subdev pad
+ * @crop : pointer to crop structure
+ * @which : active or try format
+ * return -EINVAL or zero when succeed
+ */
+static int resizer_s_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_crop *crop)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct isp_device *isp = to_isp_device(res);
+ struct v4l2_mbus_framefmt *format_sink, *format_source;
+ struct resizer_ratio ratio;
+
+ /* Only sink pad has crop capability */
+ if (crop->pad != RESZ_PAD_SINK)
+ return -EINVAL;
+
+ format_sink = __resizer_get_format(res, fh, RESZ_PAD_SINK,
+ crop->which);
+ format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE,
+ crop->which);
+
+ dev_dbg(isp->dev, "%s: L=%d,T=%d,W=%d,H=%d,which=%d\n", __func__,
+ crop->rect.left, crop->rect.top, crop->rect.width,
+ crop->rect.height, crop->which);
+
+ dev_dbg(isp->dev, "%s: input=%dx%d, output=%dx%d\n", __func__,
+ format_sink->width, format_sink->height,
+ format_source->width, format_source->height);
+
+ resizer_try_crop(format_sink, format_source, &crop->rect);
+ *__resizer_get_crop(res, fh, crop->which) = crop->rect;
+ resizer_calc_ratios(res, &crop->rect, format_source, &ratio);
+
+ if (crop->which == V4L2_SUBDEV_FORMAT_TRY)
+ return 0;
+
+ res->ratio = ratio;
+ res->crop.active = crop->rect;
+
+ /*
+ * s_crop can be called while streaming is on. In this case
+ * the crop values will be set in the next IRQ.
+ */
+ if (res->state != ISP_PIPELINE_STREAM_STOPPED)
+ res->applycrop = 1;
+
+ return 0;
+}
+
+/* resizer pixel formats */
+static const unsigned int resizer_formats[] = {
+ V4L2_MBUS_FMT_UYVY8_1X16,
+ V4L2_MBUS_FMT_YUYV8_1X16,
+};
+
+static unsigned int resizer_max_in_width(struct isp_res_device *res)
+{
+ struct isp_device *isp = to_isp_device(res);
+
+ if (res->input == RESIZER_INPUT_MEMORY) {
+ return MAX_IN_WIDTH_MEMORY_MODE;
+ } else {
+ if (isp->revision == ISP_REVISION_1_0)
+ return MAX_IN_WIDTH_ONTHEFLY_MODE_ES1;
+ else
+ return MAX_IN_WIDTH_ONTHEFLY_MODE_ES2;
+ }
+}
+
+/*
+ * resizer_try_format - Handle try format by pad subdev method
+ * @res : ISP resizer device
+ * @fh : V4L2 subdev file handle
+ * @pad : pad num
+ * @fmt : pointer to v4l2 format structure
+ * @which : wanted subdev format
+ */
+static void resizer_try_format(struct isp_res_device *res,
+ struct v4l2_subdev_fh *fh, unsigned int pad,
+ struct v4l2_mbus_framefmt *fmt,
+ enum v4l2_subdev_format_whence which)
+{
+ struct v4l2_mbus_framefmt *format;
+ struct resizer_ratio ratio;
+ struct v4l2_rect crop;
+
+ switch (pad) {
+ case RESZ_PAD_SINK:
+ if (fmt->code != V4L2_MBUS_FMT_YUYV8_1X16 &&
+ fmt->code != V4L2_MBUS_FMT_UYVY8_1X16)
+ fmt->code = V4L2_MBUS_FMT_YUYV8_1X16;
+
+ fmt->width = clamp_t(u32, fmt->width, MIN_IN_WIDTH,
+ resizer_max_in_width(res));
+ fmt->height = clamp_t(u32, fmt->height, MIN_IN_HEIGHT,
+ MAX_IN_HEIGHT);
+ break;
+
+ case RESZ_PAD_SOURCE:
+ format = __resizer_get_format(res, fh, RESZ_PAD_SINK, which);
+ fmt->code = format->code;
+
+ crop = *__resizer_get_crop(res, fh, which);
+ resizer_calc_ratios(res, &crop, fmt, &ratio);
+ break;
+ }
+
+ fmt->colorspace = V4L2_COLORSPACE_JPEG;
+ fmt->field = V4L2_FIELD_NONE;
+}
+
+/*
+ * resizer_enum_mbus_code - Handle pixel format enumeration
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @code : pointer to v4l2_subdev_mbus_code_enum structure
+ * return -EINVAL or zero on success
+ */
+static int resizer_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ if (code->pad == RESZ_PAD_SINK) {
+ if (code->index >= ARRAY_SIZE(resizer_formats))
+ return -EINVAL;
+
+ code->code = resizer_formats[code->index];
+ } else {
+ if (code->index != 0)
+ return -EINVAL;
+
+ format = __resizer_get_format(res, fh, RESZ_PAD_SINK,
+ V4L2_SUBDEV_FORMAT_TRY);
+ code->code = format->code;
+ }
+
+ return 0;
+}
+
+static int resizer_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt format;
+
+ if (fse->index != 0)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = 1;
+ format.height = 1;
+ resizer_try_format(res, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->min_width = format.width;
+ fse->min_height = format.height;
+
+ if (format.code != fse->code)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = -1;
+ format.height = -1;
+ resizer_try_format(res, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->max_width = format.width;
+ fse->max_height = format.height;
+
+ return 0;
+}
+
+/*
+ * resizer_get_format - Handle get format by pads subdev method
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @fmt : pointer to v4l2 subdev format structure
+ * return -EINVAL or zero on sucess
+ */
+static int resizer_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __resizer_get_format(res, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ fmt->format = *format;
+ return 0;
+}
+
+/*
+ * resizer_set_format - Handle set format by pads subdev method
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @fmt : pointer to v4l2 subdev format structure
+ * return -EINVAL or zero on success
+ */
+static int resizer_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+ struct v4l2_rect *crop;
+
+ format = __resizer_get_format(res, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ resizer_try_format(res, fh, fmt->pad, &fmt->format, fmt->which);
+ *format = fmt->format;
+
+ if (fmt->pad == RESZ_PAD_SINK) {
+ /* reset crop rectangle */
+ crop = __resizer_get_crop(res, fh, fmt->which);
+ crop->left = 0;
+ crop->top = 0;
+ crop->width = fmt->format.width;
+ crop->height = fmt->format.height;
+
+ /* Propagate the format from sink to source */
+ format = __resizer_get_format(res, fh, RESZ_PAD_SOURCE,
+ fmt->which);
+ *format = fmt->format;
+ resizer_try_format(res, fh, RESZ_PAD_SOURCE, format,
+ fmt->which);
+ }
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+ /* Compute and store the active crop rectangle and resizer
+ * ratios. format already points to the source pad active
+ * format.
+ */
+ res->crop.active = res->crop.request;
+ resizer_calc_ratios(res, &res->crop.active, format,
+ &res->ratio);
+ }
+
+ return 0;
+}
+
+/*
+ * resizer_init_formats - Initialize formats on all pads
+ * @sd: ISP resizer V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ *
+ * Initialize all pad formats with default values. If fh is not NULL, try
+ * formats are initialized on the file handle. Otherwise active formats are
+ * initialized on the device.
+ */
+static int resizer_init_formats(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_subdev_format format;
+
+ memset(&format, 0, sizeof(format));
+ format.pad = RESZ_PAD_SINK;
+ format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
+ format.format.code = V4L2_MBUS_FMT_YUYV8_1X16;
+ format.format.width = 4096;
+ format.format.height = 4096;
+ resizer_set_format(sd, fh, &format);
+
+ return 0;
+}
+
+/* subdev video operations */
+static const struct v4l2_subdev_video_ops resizer_v4l2_video_ops = {
+ .s_stream = resizer_set_stream,
+};
+
+/* subdev pad operations */
+static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = {
+ .enum_mbus_code = resizer_enum_mbus_code,
+ .enum_frame_size = resizer_enum_frame_size,
+ .get_fmt = resizer_get_format,
+ .set_fmt = resizer_set_format,
+ .get_crop = resizer_g_crop,
+ .set_crop = resizer_s_crop,
+};
+
+/* subdev operations */
+static const struct v4l2_subdev_ops resizer_v4l2_ops = {
+ .video = &resizer_v4l2_video_ops,
+ .pad = &resizer_v4l2_pad_ops,
+};
+
+/* subdev internal operations */
+static const struct v4l2_subdev_internal_ops resizer_v4l2_internal_ops = {
+ .open = resizer_init_formats,
+};
+
+/* -----------------------------------------------------------------------------
+ * Media entity operations
+ */
+
+/*
+ * resizer_link_setup - Setup resizer connections.
+ * @entity : Pointer to media entity structure
+ * @local : Pointer to local pad array
+ * @remote : Pointer to remote pad array
+ * @flags : Link flags
+ * return -EINVAL or zero on success
+ */
+static int resizer_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+
+ switch (local->index | media_entity_type(remote->entity)) {
+ case RESZ_PAD_SINK | MEDIA_ENT_T_DEVNODE:
+ /* read from memory */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (res->input == RESIZER_INPUT_VP)
+ return -EBUSY;
+ res->input = RESIZER_INPUT_MEMORY;
+ } else {
+ if (res->input == RESIZER_INPUT_MEMORY)
+ res->input = RESIZER_INPUT_NONE;
+ }
+ break;
+
+ case RESZ_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* read from ccdc or previewer */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (res->input == RESIZER_INPUT_MEMORY)
+ return -EBUSY;
+ res->input = RESIZER_INPUT_VP;
+ } else {
+ if (res->input == RESIZER_INPUT_VP)
+ res->input = RESIZER_INPUT_NONE;
+ }
+ break;
+
+ case RESZ_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
+ /* resizer always write to memory */
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* media operations */
+static const struct media_entity_operations resizer_media_ops = {
+ .link_setup = resizer_link_setup,
+};
+
+/*
+ * resizer_init_entities - Initialize resizer subdev and media entity.
+ * @res : Pointer to resizer device structure
+ * return -ENOMEM or zero on success
+ */
+static int resizer_init_entities(struct isp_res_device *res)
+{
+ struct v4l2_subdev *sd = &res->subdev;
+ struct media_pad *pads = res->pads;
+ struct media_entity *me = &sd->entity;
+ int ret;
+
+ res->input = RESIZER_INPUT_NONE;
+
+ v4l2_subdev_init(sd, &resizer_v4l2_ops);
+ sd->internal_ops = &resizer_v4l2_internal_ops;
+ strlcpy(sd->name, "OMAP3 ISP resizer", sizeof(sd->name));
+ sd->grp_id = 1 << 16; /* group ID for isp subdevs */
+ v4l2_set_subdevdata(sd, res);
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+
+ me->ops = &resizer_media_ops;
+ ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0);
+ if (ret < 0)
+ return ret;
+
+ resizer_init_formats(sd, NULL);
+
+ res->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ res->video_in.ops = &resizer_video_ops;
+ res->video_in.isp = to_isp_device(res);
+ res->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
+ res->video_in.bpl_alignment = 32;
+ res->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ res->video_out.ops = &resizer_video_ops;
+ res->video_out.isp = to_isp_device(res);
+ res->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
+ res->video_out.bpl_alignment = 32;
+
+ ret = omap3isp_video_init(&res->video_in, "resizer");
+ if (ret < 0)
+ return ret;
+
+ ret = omap3isp_video_init(&res->video_out, "resizer");
+ if (ret < 0)
+ return ret;
+
+ /* Connect the video nodes to the resizer subdev. */
+ ret = media_entity_create_link(&res->video_in.video.entity, 0,
+ &res->subdev.entity, RESZ_PAD_SINK, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE,
+ &res->video_out.video.entity, 0, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+void omap3isp_resizer_unregister_entities(struct isp_res_device *res)
+{
+ media_entity_cleanup(&res->subdev.entity);
+
+ v4l2_device_unregister_subdev(&res->subdev);
+ omap3isp_video_unregister(&res->video_in);
+ omap3isp_video_unregister(&res->video_out);
+}
+
+int omap3isp_resizer_register_entities(struct isp_res_device *res,
+ struct v4l2_device *vdev)
+{
+ int ret;
+
+ /* Register the subdev and video nodes. */
+ ret = v4l2_device_register_subdev(vdev, &res->subdev);
+ if (ret < 0)
+ goto error;
+
+ ret = omap3isp_video_register(&res->video_in, vdev);
+ if (ret < 0)
+ goto error;
+
+ ret = omap3isp_video_register(&res->video_out, vdev);
+ if (ret < 0)
+ goto error;
+
+ return 0;
+
+error:
+ omap3isp_resizer_unregister_entities(res);
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP resizer initialization and cleanup
+ */
+
+void omap3isp_resizer_cleanup(struct isp_device *isp)
+{
+}
+
+/*
+ * isp_resizer_init - Resizer initialization.
+ * @isp : Pointer to ISP device
+ * return -ENOMEM or zero on success
+ */
+int omap3isp_resizer_init(struct isp_device *isp)
+{
+ struct isp_res_device *res = &isp->isp_res;
+ int ret;
+
+ init_waitqueue_head(&res->wait);
+ atomic_set(&res->stopping, 0);
+ ret = resizer_init_entities(res);
+ if (ret < 0)
+ goto out;
+
+out:
+ if (ret)
+ omap3isp_resizer_cleanup(isp);
+
+ return ret;
+}
--- /dev/null
+/*
+ * ispresizer.h
+ *
+ * TI OMAP3 ISP - Resizer module
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef OMAP3_ISP_RESIZER_H
+#define OMAP3_ISP_RESIZER_H
+
+#include <linux/types.h>
+
+/*
+ * Constants for filter coefficents count
+ */
+#define COEFF_CNT 32
+
+/*
+ * struct isprsz_coef - Structure for resizer filter coeffcients.
+ * @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
+ * mode (.5x-4x)
+ * @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
+ * mode (.5x-4x)
+ * @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
+ * mode (.25x-.5x)
+ * @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
+ * mode (.25x-.5x)
+ */
+struct isprsz_coef {
+ u16 h_filter_coef_4tap[32];
+ u16 v_filter_coef_4tap[32];
+ /* Every 8th value is a dummy value in the following arrays: */
+ u16 h_filter_coef_7tap[32];
+ u16 v_filter_coef_7tap[32];
+};
+
+/* Chrominance horizontal algorithm */
+enum resizer_chroma_algo {
+ RSZ_THE_SAME = 0, /* Chrominance the same as Luminance */
+ RSZ_BILINEAR = 1, /* Chrominance uses bilinear interpolation */
+};
+
+/* Resizer input type select */
+enum resizer_colors_type {
+ RSZ_YUV422 = 0, /* YUV422 color is interleaved */
+ RSZ_COLOR8 = 1, /* Color separate data on 8 bits */
+};
+
+/*
+ * Structure for horizontal and vertical resizing value
+ */
+struct resizer_ratio {
+ u32 horz;
+ u32 vert;
+};
+
+/*
+ * Structure for luminance enhancer parameters.
+ */
+struct resizer_luma_yenh {
+ u8 algo; /* algorithm select. */
+ u8 gain; /* maximum gain. */
+ u8 slope; /* slope. */
+ u8 core; /* core offset. */
+};
+
+enum resizer_input_entity {
+ RESIZER_INPUT_NONE,
+ RESIZER_INPUT_VP, /* input video port - prev or ccdc */
+ RESIZER_INPUT_MEMORY,
+};
+
+/* Sink and source resizer pads */
+#define RESZ_PAD_SINK 0
+#define RESZ_PAD_SOURCE 1
+#define RESZ_PADS_NUM 2
+
+/*
+ * struct isp_res_device - OMAP3 ISP resizer module
+ * @crop.request: Crop rectangle requested by the user
+ * @crop.active: Active crop rectangle (based on hardware requirements)
+ */
+struct isp_res_device {
+ struct v4l2_subdev subdev;
+ struct media_pad pads[RESZ_PADS_NUM];
+ struct v4l2_mbus_framefmt formats[RESZ_PADS_NUM];
+
+ enum resizer_input_entity input;
+ struct isp_video video_in;
+ struct isp_video video_out;
+ unsigned int error;
+
+ u32 addr_base; /* stored source buffer address in memory mode */
+ u32 crop_offset; /* additional offset for crop in memory mode */
+ struct resizer_ratio ratio;
+ int pm_state;
+ unsigned int applycrop:1;
+ enum isp_pipeline_stream_state state;
+ wait_queue_head_t wait;
+ atomic_t stopping;
+
+ struct {
+ struct v4l2_rect request;
+ struct v4l2_rect active;
+ } crop;
+};
+
+struct isp_device;
+
+int omap3isp_resizer_init(struct isp_device *isp);
+void omap3isp_resizer_cleanup(struct isp_device *isp);
+
+int omap3isp_resizer_register_entities(struct isp_res_device *res,
+ struct v4l2_device *vdev);
+void omap3isp_resizer_unregister_entities(struct isp_res_device *res);
+void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res);
+void omap3isp_resizer_isr(struct isp_res_device *isp_res);
+
+void omap3isp_resizer_max_rate(struct isp_res_device *res,
+ unsigned int *max_rate);
+
+void omap3isp_resizer_suspend(struct isp_res_device *isp_res);
+
+void omap3isp_resizer_resume(struct isp_res_device *isp_res);
+
+int omap3isp_resizer_busy(struct isp_res_device *isp_res);
+
+#endif /* OMAP3_ISP_RESIZER_H */
--- /dev/null
+/*
+ * luma_enhance_table.h
+ *
+ * TI OMAP3 ISP - Luminance enhancement table
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+1047552, 1047552, 1047552, 1047552, 1047552, 1047552, 1047552, 1047552,
+1047552, 1047552, 1047552, 1047552, 1047552, 1047552, 1047552, 1047552,
+1047552, 1047552, 1047552, 1047552, 1047552, 1047552, 1047552, 1047552,
+1047552, 1047552, 1047552, 1047552, 1048575, 1047551, 1046527, 1045503,
+1044479, 1043455, 1042431, 1041407, 1040383, 1039359, 1038335, 1037311,
+1036287, 1035263, 1034239, 1033215, 1032191, 1031167, 1030143, 1028096,
+1028096, 1028096, 1028096, 1028096, 1028096, 1028096, 1028096, 1028096,
+1028096, 1028100, 1032196, 1036292, 1040388, 1044484, 0, 0,
+ 0, 5, 5125, 10245, 15365, 20485, 25605, 30720,
+ 30720, 30720, 30720, 30720, 30720, 30720, 30720, 30720,
+ 30720, 30720, 31743, 30719, 29695, 28671, 27647, 26623,
+ 25599, 24575, 23551, 22527, 21503, 20479, 19455, 18431,
+ 17407, 16383, 15359, 14335, 13311, 12287, 11263, 10239,
+ 9215, 8191, 7167, 6143, 5119, 4095, 3071, 1024,
+ 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024,
+ 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024
--- /dev/null
+/*
+ * noise_filter_table.h
+ *
+ * TI OMAP3 ISP - Noise filter table
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
+31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31
projects / linux-beck.git / commitdiff