--- /dev/null
+
+/*
+ * Copyright 2004-2012 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/*!
+ * @file ipu_bg_overlay_sdc_bg.c
+ *
+ * @brief IPU Use case for PRP-VF back-ground
+ *
+ * @ingroup IPU
+ */
+#include <linux/dma-mapping.h>
+#include <linux/fb.h>
+#include <linux/ipu.h>
+#include <mach/mipi_csi2.h>
+#include "mxc_v4l2_capture.h"
+#include "ipu_prp_sw.h"
+
+static int csi_buffer_num;
+static u32 bpp, csi_mem_bufsize = 3;
+static u32 out_format;
+static struct ipu_soc *disp_ipu;
+static u32 offset;
+
+static void csi_buf_work_func(struct work_struct *work)
+{
+ int err = 0;
+ cam_data *cam =
+ container_of(work, struct _cam_data, csi_work_struct);
+
+ struct ipu_task task;
+ memset(&task, 0, sizeof(task));
+
+ if (csi_buffer_num)
+ task.input.paddr = cam->vf_bufs[0];
+ else
+ task.input.paddr = cam->vf_bufs[1];
+ task.input.width = cam->crop_current.width;
+ task.input.height = cam->crop_current.height;
+ task.input.format = IPU_PIX_FMT_UYVY;
+
+ task.output.paddr = offset;
+ task.output.width = cam->overlay_fb->var.xres;
+ task.output.height = cam->overlay_fb->var.yres;
+ task.output.format = out_format;
+ task.output.rotate = cam->rotation;
+ task.output.crop.pos.x = cam->win.w.left;
+ task.output.crop.pos.y = cam->win.w.top;
+ if (cam->win.w.width > 1024 || cam->win.w.height > 1024) {
+ task.output.crop.w = cam->overlay_fb->var.xres;
+ task.output.crop.h = cam->overlay_fb->var.yres;
+ } else {
+ task.output.crop.w = cam->win.w.width;
+ task.output.crop.h = cam->win.w.height;
+ }
+again:
+ err = ipu_check_task(&task);
+ if (err != IPU_CHECK_OK) {
+ if (err > IPU_CHECK_ERR_MIN) {
+ if (err == IPU_CHECK_ERR_SPLIT_INPUTW_OVER) {
+ task.input.crop.w -= 8;
+ goto again;
+ }
+ if (err == IPU_CHECK_ERR_SPLIT_INPUTH_OVER) {
+ task.input.crop.h -= 8;
+ goto again;
+ }
+ if (err == IPU_CHECK_ERR_SPLIT_OUTPUTW_OVER) {
+ task.output.width -= 8;
+ task.output.crop.w = task.output.width;
+ goto again;
+ }
+ if (err == IPU_CHECK_ERR_SPLIT_OUTPUTH_OVER) {
+ task.output.height -= 8;
+ task.output.crop.h = task.output.height;
+ goto again;
+ }
+ printk(KERN_ERR "check ipu taks fail\n");
+ return;
+ }
+ printk(KERN_ERR "check ipu taks fail\n");
+ return;
+ }
+ err = ipu_queue_task(&task);
+ if (err < 0)
+ printk(KERN_ERR "queue ipu task error\n");
+}
+
+static void get_disp_ipu(cam_data *cam)
+{
+ if (cam->output > 2)
+ disp_ipu = ipu_get_soc(1); /* using DISP4 */
+ else
+ disp_ipu = ipu_get_soc(0);
+}
+
+
+/*!
+ * csi ENC callback function.
+ *
+ * @param irq int irq line
+ * @param dev_id void * device id
+ *
+ * @return status IRQ_HANDLED for handled
+ */
+static irqreturn_t csi_enc_callback(int irq, void *dev_id)
+{
+ cam_data *cam = (cam_data *) dev_id;
+
+ ipu_select_buffer(cam->ipu, CSI_MEM, IPU_OUTPUT_BUFFER, csi_buffer_num);
+ schedule_work(&cam->csi_work_struct);
+ csi_buffer_num = (csi_buffer_num == 0) ? 1 : 0;
+ return IRQ_HANDLED;
+}
+
+static int csi_enc_setup(cam_data *cam)
+{
+ ipu_channel_params_t params;
+ u32 pixel_fmt;
+ int err = 0, sensor_protocol = 0;
+#ifdef CONFIG_MXC_MIPI_CSI2
+ void *mipi_csi2_info;
+ int ipu_id;
+ int csi_id;
+#endif
+
+ if (!cam) {
+ printk(KERN_ERR "cam private is NULL\n");
+ return -ENXIO;
+ }
+
+ memset(¶ms, 0, sizeof(ipu_channel_params_t));
+ params.csi_mem.csi = cam->csi;
+
+ sensor_protocol = ipu_csi_get_sensor_protocol(cam->ipu, cam->csi);
+ switch (sensor_protocol) {
+ case IPU_CSI_CLK_MODE_GATED_CLK:
+ case IPU_CSI_CLK_MODE_NONGATED_CLK:
+ case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
+ case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
+ case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
+ params.csi_mem.interlaced = false;
+ break;
+ case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
+ case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
+ case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
+ params.csi_mem.interlaced = true;
+ break;
+ default:
+ printk(KERN_ERR "sensor protocol unsupported\n");
+ return -EINVAL;
+ }
+
+ ipu_csi_enable_mclk_if(cam->ipu, CSI_MCLK_ENC, cam->csi, true, true);
+
+#ifdef CONFIG_MXC_MIPI_CSI2
+ mipi_csi2_info = mipi_csi2_get_info();
+
+ if (mipi_csi2_info) {
+ if (mipi_csi2_get_status(mipi_csi2_info)) {
+ ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info);
+ csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info);
+
+ if (cam->ipu == ipu_get_soc(ipu_id)
+ && cam->csi == csi_id) {
+ params.csi_mem.mipi_en = true;
+ params.csi_mem.mipi_vc =
+ mipi_csi2_get_virtual_channel(mipi_csi2_info);
+ params.csi_mem.mipi_id =
+ mipi_csi2_get_datatype(mipi_csi2_info);
+
+ mipi_csi2_pixelclk_enable(mipi_csi2_info);
+ } else {
+ params.csi_mem.mipi_en = false;
+ params.csi_mem.mipi_vc = 0;
+ params.csi_mem.mipi_id = 0;
+ }
+ } else {
+ params.csi_mem.mipi_en = false;
+ params.csi_mem.mipi_vc = 0;
+ params.csi_mem.mipi_id = 0;
+ }
+ } else {
+ printk(KERN_ERR "Fail to get mipi_csi2_info!\n");
+ return -EPERM;
+ }
+#endif
+
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0],
+ (dma_addr_t) cam->vf_bufs[0]);
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1],
+ (dma_addr_t) cam->vf_bufs[1]);
+ }
+ csi_mem_bufsize = cam->crop_current.width * cam->crop_current.height * 2;
+ cam->vf_bufs_size[0] = PAGE_ALIGN(csi_mem_bufsize);
+ cam->vf_bufs_vaddr[0] = (void *)dma_alloc_coherent(0,
+ cam->vf_bufs_size[0],
+ (dma_addr_t *) &
+ cam->vf_bufs[0],
+ GFP_DMA |
+ GFP_KERNEL);
+ if (cam->vf_bufs_vaddr[0] == NULL) {
+ printk(KERN_ERR "Error to allocate vf buffer\n");
+ err = -ENOMEM;
+ goto out_2;
+ }
+ cam->vf_bufs_size[1] = PAGE_ALIGN(csi_mem_bufsize);
+ cam->vf_bufs_vaddr[1] = (void *)dma_alloc_coherent(0,
+ cam->vf_bufs_size[1],
+ (dma_addr_t *) &
+ cam->vf_bufs[1],
+ GFP_DMA |
+ GFP_KERNEL);
+ if (cam->vf_bufs_vaddr[1] == NULL) {
+ printk(KERN_ERR "Error to allocate vf buffer\n");
+ err = -ENOMEM;
+ goto out_1;
+ }
+ pr_debug("vf_bufs %x %x\n", cam->vf_bufs[0], cam->vf_bufs[1]);
+
+ err = ipu_init_channel(cam->ipu, CSI_MEM, ¶ms);
+ if (err != 0) {
+ printk(KERN_ERR "ipu_init_channel %d\n", err);
+ goto out_1;
+ }
+
+ pixel_fmt = IPU_PIX_FMT_UYVY;
+ err = ipu_init_channel_buffer(cam->ipu, CSI_MEM, IPU_OUTPUT_BUFFER,
+ pixel_fmt, cam->crop_current.width,
+ cam->crop_current.height,
+ cam->crop_current.width, IPU_ROTATE_NONE,
+ cam->vf_bufs[0], cam->vf_bufs[1], 0,
+ cam->offset.u_offset, cam->offset.u_offset);
+ if (err != 0) {
+ printk(KERN_ERR "CSI_MEM output buffer\n");
+ goto out_1;
+ }
+ err = ipu_enable_channel(cam->ipu, CSI_MEM);
+ if (err < 0) {
+ printk(KERN_ERR "ipu_enable_channel CSI_MEM\n");
+ goto out_1;
+ }
+
+ csi_buffer_num = 0;
+
+ ipu_select_buffer(cam->ipu, CSI_MEM, IPU_OUTPUT_BUFFER, 0);
+ ipu_select_buffer(cam->ipu, CSI_MEM, IPU_OUTPUT_BUFFER, 1);
+ return err;
+out_1:
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0],
+ (dma_addr_t) cam->vf_bufs[0]);
+ cam->vf_bufs_vaddr[0] = NULL;
+ cam->vf_bufs[0] = 0;
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1],
+ (dma_addr_t) cam->vf_bufs[1]);
+ cam->vf_bufs_vaddr[1] = NULL;
+ cam->vf_bufs[1] = 0;
+ }
+out_2:
+ return err;
+}
+
+/*!
+ * Enable encoder task
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int csi_enc_enabling_tasks(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ int err = 0;
+
+ ipu_clear_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF);
+ err = ipu_request_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF,
+ csi_enc_callback, 0, "Mxc Camera", cam);
+ if (err != 0) {
+ printk(KERN_ERR "Error registering CSI0_OUT_EOF irq\n");
+ return err;
+ }
+
+ INIT_WORK(&cam->csi_work_struct, csi_buf_work_func);
+
+ err = csi_enc_setup(cam);
+ if (err != 0) {
+ printk(KERN_ERR "csi_enc_setup %d\n", err);
+ goto out1;
+ }
+
+ return err;
+out1:
+ ipu_free_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF, cam);
+ return err;
+}
+
+/*!
+ * bg_overlay_start - start the overlay task
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ */
+static int bg_overlay_start(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ int err = 0;
+
+ if (!cam) {
+ printk(KERN_ERR "private is NULL\n");
+ return -EIO;
+ }
+
+ if (cam->overlay_active == true) {
+ pr_debug("already start.\n");
+ return 0;
+ }
+
+ get_disp_ipu(cam);
+
+ out_format = cam->v4l2_fb.fmt.pixelformat;
+ if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR24) {
+ bpp = 3, csi_mem_bufsize = 3;
+ pr_info("BGR24\n");
+ } else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_RGB565) {
+ bpp = 2, csi_mem_bufsize = 2;
+ pr_info("RGB565\n");
+ } else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR32) {
+ bpp = 4, csi_mem_bufsize = 4;
+ pr_info("BGR32\n");
+ } else {
+ printk(KERN_ERR
+ "unsupported fix format from the framebuffer.\n");
+ return -EINVAL;
+ }
+
+ offset = cam->v4l2_fb.fmt.bytesperline * cam->win.w.top +
+ csi_mem_bufsize * cam->win.w.left;
+
+ if (cam->v4l2_fb.base == 0) {
+ printk(KERN_ERR "invalid frame buffer address.\n");
+ } else {
+ offset += (u32) cam->v4l2_fb.base;
+ }
+
+ csi_mem_bufsize = cam->win.w.width * cam->win.w.height * csi_mem_bufsize;
+
+ err = csi_enc_enabling_tasks(cam);
+ if (err != 0) {
+ printk(KERN_ERR "Error csi enc enable fail\n");
+ return err;
+ }
+
+ cam->overlay_active = true;
+ return err;
+}
+
+/*!
+ * bg_overlay_stop - stop the overlay task
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ */
+static int bg_overlay_stop(void *private)
+{
+ int err = 0;
+ cam_data *cam = (cam_data *) private;
+#ifdef CONFIG_MXC_MIPI_CSI2
+ void *mipi_csi2_info;
+ int ipu_id;
+ int csi_id;
+#endif
+
+ if (cam->overlay_active == false)
+ return 0;
+
+ ipu_free_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF, cam);
+
+ err = ipu_disable_channel(cam->ipu, CSI_MEM, true);
+
+ ipu_uninit_channel(cam->ipu, CSI_MEM);
+
+ csi_buffer_num = 0;
+
+#ifdef CONFIG_MXC_MIPI_CSI2
+ mipi_csi2_info = mipi_csi2_get_info();
+
+ if (mipi_csi2_info) {
+ if (mipi_csi2_get_status(mipi_csi2_info)) {
+ ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info);
+ csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info);
+
+ if (cam->ipu == ipu_get_soc(ipu_id)
+ && cam->csi == csi_id)
+ mipi_csi2_pixelclk_disable(mipi_csi2_info);
+ }
+ } else {
+ printk(KERN_ERR "Fail to get mipi_csi2_info!\n");
+ return -EPERM;
+ }
+#endif
+
+ ipu_csi_enable_mclk_if(cam->ipu, CSI_MCLK_VF, cam->csi, false, false);
+
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0], cam->vf_bufs[0]);
+ cam->vf_bufs_vaddr[0] = NULL;
+ cam->vf_bufs[0] = 0;
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1], cam->vf_bufs[1]);
+ cam->vf_bufs_vaddr[1] = NULL;
+ cam->vf_bufs[1] = 0;
+ }
+ if (cam->rot_vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->rot_vf_buf_size[0],
+ cam->rot_vf_bufs_vaddr[0],
+ cam->rot_vf_bufs[0]);
+ cam->rot_vf_bufs_vaddr[0] = NULL;
+ cam->rot_vf_bufs[0] = 0;
+ }
+ if (cam->rot_vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->rot_vf_buf_size[1],
+ cam->rot_vf_bufs_vaddr[1],
+ cam->rot_vf_bufs[1]);
+ cam->rot_vf_bufs_vaddr[1] = NULL;
+ cam->rot_vf_bufs[1] = 0;
+ }
+
+ cam->overlay_active = false;
+ return err;
+}
+
+/*!
+ * Enable csi
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int bg_overlay_enable_csi(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ return ipu_enable_csi(cam->ipu, cam->csi);
+}
+
+/*!
+ * Disable csi
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int bg_overlay_disable_csi(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ return ipu_disable_csi(cam->ipu, cam->csi);
+}
+
+/*!
+ * function to select bg as the working path
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ * @return status
+ */
+int bg_overlay_sdc_select(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ if (cam) {
+ cam->vf_start_sdc = bg_overlay_start;
+ cam->vf_stop_sdc = bg_overlay_stop;
+ cam->vf_enable_csi = bg_overlay_enable_csi;
+ cam->vf_disable_csi = bg_overlay_disable_csi;
+ cam->overlay_active = false;
+ }
+
+ return 0;
+}
+
+/*!
+ * function to de-select bg as the working path
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ * @return status
+ */
+int bg_overlay_sdc_deselect(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ if (cam) {
+ cam->vf_start_sdc = NULL;
+ cam->vf_stop_sdc = NULL;
+ cam->vf_enable_csi = NULL;
+ cam->vf_disable_csi = NULL;
+ }
+ return 0;
+}
+
+/*!
+ * Init background overlay task.
+ *
+ * @return Error code indicating success or failure
+ */
+__init int bg_overlay_sdc_init(void)
+{
+ return 0;
+}
+
+/*!
+ * Deinit background overlay task.
+ *
+ * @return Error code indicating success or failure
+ */
+void __exit bg_overlay_sdc_exit(void)
+{
+}
+
+module_init(bg_overlay_sdc_init);
+module_exit(bg_overlay_sdc_exit);
+
+EXPORT_SYMBOL(bg_overlay_sdc_select);
+EXPORT_SYMBOL(bg_overlay_sdc_deselect);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IPU PRP VF SDC Backgroud Driver");
+MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff