--- /dev/null
+/*
+ * Frame buffer driver for ADV7393/2 video encoder
+ *
+ * Copyright 2006-2009 Analog Devices Inc.
+ * Licensed under the GPL-2 or late.
+ */
+
+/*
+ * TODO: Remove Globals
+ * TODO: Code Cleanup
+ */
+
+#define pr_fmt(fmt) DRIVER_NAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <asm/blackfin.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <linux/uaccess.h>
+#include <linux/gpio.h>
+#include <asm/portmux.h>
+
+#include <linux/dma-mapping.h>
+#include <linux/proc_fs.h>
+#include <linux/platform_device.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+
+#include "bfin_adv7393fb.h"
+
+static int mode = VMODE;
+static int mem = VMEM;
+static int nocursor = 1;
+
+static const unsigned short ppi_pins[] = {
+ P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2,
+ P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3,
+ P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7,
+ P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, P_PPI0_D11,
+ P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15,
+ 0
+};
+
+/*
+ * card parameters
+ */
+
+static struct bfin_adv7393_fb_par {
+ /* structure holding blackfin / adv7393 paramters when
+ screen is blanked */
+ struct {
+ u8 Mode; /* ntsc/pal/? */
+ } vga_state;
+ atomic_t ref_count;
+} bfin_par;
+
+/* --------------------------------------------------------------------- */
+
+static struct fb_var_screeninfo bfin_adv7393_fb_defined = {
+ .xres = 720,
+ .yres = 480,
+ .xres_virtual = 720,
+ .yres_virtual = 480,
+ .bits_per_pixel = 16,
+ .activate = FB_ACTIVATE_TEST,
+ .height = -1,
+ .width = -1,
+ .left_margin = 0,
+ .right_margin = 0,
+ .upper_margin = 0,
+ .lower_margin = 0,
+ .vmode = FB_VMODE_INTERLACED,
+ .red = {11, 5, 0},
+ .green = {5, 6, 0},
+ .blue = {0, 5, 0},
+ .transp = {0, 0, 0},
+};
+
+static struct fb_fix_screeninfo bfin_adv7393_fb_fix __devinitdata = {
+ .id = "BFIN ADV7393",
+ .smem_len = 720 * 480 * 2,
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .xpanstep = 0,
+ .ypanstep = 0,
+ .line_length = 720 * 2,
+ .accel = FB_ACCEL_NONE
+};
+
+static struct fb_ops bfin_adv7393_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_open = bfin_adv7393_fb_open,
+ .fb_release = bfin_adv7393_fb_release,
+ .fb_check_var = bfin_adv7393_fb_check_var,
+ .fb_pan_display = bfin_adv7393_fb_pan_display,
+ .fb_blank = bfin_adv7393_fb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_cursor = bfin_adv7393_fb_cursor,
+ .fb_setcolreg = bfin_adv7393_fb_setcolreg,
+};
+
+static int dma_desc_list(struct adv7393fb_device *fbdev, u16 arg)
+{
+ if (arg == BUILD) { /* Build */
+ fbdev->vb1 = l1_data_sram_zalloc(sizeof(struct dmasg));
+ if (fbdev->vb1 == NULL)
+ goto error;
+
+ fbdev->av1 = l1_data_sram_zalloc(sizeof(struct dmasg));
+ if (fbdev->av1 == NULL)
+ goto error;
+
+ fbdev->vb2 = l1_data_sram_zalloc(sizeof(struct dmasg));
+ if (fbdev->vb2 == NULL)
+ goto error;
+
+ fbdev->av2 = l1_data_sram_zalloc(sizeof(struct dmasg));
+ if (fbdev->av2 == NULL)
+ goto error;
+
+ /* Build linked DMA descriptor list */
+ fbdev->vb1->next_desc_addr = fbdev->av1;
+ fbdev->av1->next_desc_addr = fbdev->vb2;
+ fbdev->vb2->next_desc_addr = fbdev->av2;
+ fbdev->av2->next_desc_addr = fbdev->vb1;
+
+ /* Save list head */
+ fbdev->descriptor_list_head = fbdev->av2;
+
+ /* Vertical Blanking Field 1 */
+ fbdev->vb1->start_addr = VB_DUMMY_MEMORY_SOURCE;
+ fbdev->vb1->cfg = DMA_CFG_VAL;
+
+ fbdev->vb1->x_count =
+ fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
+
+ fbdev->vb1->x_modify = 0;
+ fbdev->vb1->y_count = fbdev->modes[mode].vb1_lines;
+ fbdev->vb1->y_modify = 0;
+
+ /* Active Video Field 1 */
+
+ fbdev->av1->start_addr = (unsigned long)fbdev->fb_mem;
+ fbdev->av1->cfg = DMA_CFG_VAL;
+ fbdev->av1->x_count =
+ fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
+ fbdev->av1->x_modify = fbdev->modes[mode].bpp / 8;
+ fbdev->av1->y_count = fbdev->modes[mode].a_lines;
+ fbdev->av1->y_modify =
+ (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
+ 1) * (fbdev->modes[mode].bpp / 8);
+
+ /* Vertical Blanking Field 2 */
+
+ fbdev->vb2->start_addr = VB_DUMMY_MEMORY_SOURCE;
+ fbdev->vb2->cfg = DMA_CFG_VAL;
+ fbdev->vb2->x_count =
+ fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
+
+ fbdev->vb2->x_modify = 0;
+ fbdev->vb2->y_count = fbdev->modes[mode].vb2_lines;
+ fbdev->vb2->y_modify = 0;
+
+ /* Active Video Field 2 */
+
+ fbdev->av2->start_addr =
+ (unsigned long)fbdev->fb_mem + fbdev->line_len;
+
+ fbdev->av2->cfg = DMA_CFG_VAL;
+
+ fbdev->av2->x_count =
+ fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
+
+ fbdev->av2->x_modify = (fbdev->modes[mode].bpp / 8);
+ fbdev->av2->y_count = fbdev->modes[mode].a_lines;
+
+ fbdev->av2->y_modify =
+ (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
+ 1) * (fbdev->modes[mode].bpp / 8);
+
+ return 1;
+ }
+
+error:
+ l1_data_sram_free(fbdev->vb1);
+ l1_data_sram_free(fbdev->av1);
+ l1_data_sram_free(fbdev->vb2);
+ l1_data_sram_free(fbdev->av2);
+
+ return 0;
+}
+
+static int bfin_config_dma(struct adv7393fb_device *fbdev)
+{
+ BUG_ON(!(fbdev->fb_mem));
+
+ set_dma_x_count(CH_PPI, fbdev->descriptor_list_head->x_count);
+ set_dma_x_modify(CH_PPI, fbdev->descriptor_list_head->x_modify);
+ set_dma_y_count(CH_PPI, fbdev->descriptor_list_head->y_count);
+ set_dma_y_modify(CH_PPI, fbdev->descriptor_list_head->y_modify);
+ set_dma_start_addr(CH_PPI, fbdev->descriptor_list_head->start_addr);
+ set_dma_next_desc_addr(CH_PPI,
+ fbdev->descriptor_list_head->next_desc_addr);
+ set_dma_config(CH_PPI, fbdev->descriptor_list_head->cfg);
+
+ return 1;
+}
+
+static void bfin_disable_dma(void)
+{
+ bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
+}
+
+static void bfin_config_ppi(struct adv7393fb_device *fbdev)
+{
+ if (ANOMALY_05000183) {
+ bfin_write_TIMER2_CONFIG(WDTH_CAP);
+ bfin_write_TIMER_ENABLE(TIMEN2);
+ }
+
+ bfin_write_PPI_CONTROL(0x381E);
+ bfin_write_PPI_FRAME(fbdev->modes[mode].tot_lines);
+ bfin_write_PPI_COUNT(fbdev->modes[mode].xres +
+ fbdev->modes[mode].boeft_blank - 1);
+ bfin_write_PPI_DELAY(fbdev->modes[mode].aoeft_blank - 1);
+}
+
+static void bfin_enable_ppi(void)
+{
+ bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
+}
+
+static void bfin_disable_ppi(void)
+{
+ bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
+}
+
+static inline int adv7393_write(struct i2c_client *client, u8 reg, u8 value)
+{
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int adv7393_read(struct i2c_client *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int
+adv7393_write_block(struct i2c_client *client,
+ const u8 *data, unsigned int len)
+{
+ int ret = -1;
+ u8 reg;
+
+ while (len >= 2) {
+ reg = *data++;
+ ret = adv7393_write(client, reg, *data++);
+ if (ret < 0)
+ break;
+ len -= 2;
+ }
+
+ return ret;
+}
+
+static int adv7393_mode(struct i2c_client *client, u16 mode)
+{
+ switch (mode) {
+ case POWER_ON: /* ADV7393 Sleep mode OFF */
+ adv7393_write(client, 0x00, 0x1E);
+ break;
+ case POWER_DOWN: /* ADV7393 Sleep mode ON */
+ adv7393_write(client, 0x00, 0x1F);
+ break;
+ case BLANK_OFF: /* Pixel Data Valid */
+ adv7393_write(client, 0x82, 0xCB);
+ break;
+ case BLANK_ON: /* Pixel Data Invalid */
+ adv7393_write(client, 0x82, 0x8B);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ return 0;
+}
+
+static irqreturn_t ppi_irq_error(int irq, void *dev_id)
+{
+
+ struct adv7393fb_device *fbdev = (struct adv7393fb_device *)dev_id;
+
+ u16 status = bfin_read_PPI_STATUS();
+
+ pr_debug("%s: PPI Status = 0x%X\n", __func__, status);
+
+ if (status) {
+ bfin_disable_dma(); /* TODO: Check Sequence */
+ bfin_disable_ppi();
+ bfin_clear_PPI_STATUS();
+ bfin_config_dma(fbdev);
+ bfin_enable_ppi();
+ }
+
+ return IRQ_HANDLED;
+
+}
+
+static int proc_output(char *buf)
+{
+ char *p = buf;
+
+ p += sprintf(p,
+ "Usage:\n"
+ "echo 0x[REG][Value] > adv7393\n"
+ "example: echo 0x1234 >adv7393\n"
+ "writes 0x34 into Register 0x12\n");
+
+ return p - buf;
+}
+
+static int
+adv7393_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ int len;
+
+ len = proc_output(page);
+ if (len <= off + count)
+ *eof = 1;
+ *start = page + off;
+ len -= off;
+ if (len > count)
+ len = count;
+ if (len < 0)
+ len = 0;
+ return len;
+}
+
+static int
+adv7393_write_proc(struct file *file, const char __user * buffer,
+ unsigned long count, void *data)
+{
+ struct adv7393fb_device *fbdev = data;
+ char line[8];
+ unsigned int val;
+ int ret;
+
+ ret = copy_from_user(line, buffer, count);
+ if (ret)
+ return -EFAULT;
+
+ val = simple_strtoul(line, NULL, 0);
+ adv7393_write(fbdev->client, val >> 8, val & 0xff);
+
+ return count;
+}
+
+static int __devinit bfin_adv7393_fb_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int ret = 0;
+ struct proc_dir_entry *entry;
+ int num_modes = ARRAY_SIZE(known_modes);
+
+ struct adv7393fb_device *fbdev = NULL;
+
+ if (mem > 2) {
+ dev_err(&client->dev, "mem out of allowed range [1;2]\n");
+ return -EINVAL;
+ }
+
+ if (mode > num_modes) {
+ dev_err(&client->dev, "mode %d: not supported", mode);
+ return -EFAULT;
+ }
+
+ fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
+ if (!fbdev) {
+ dev_err(&client->dev, "failed to allocate device private record");
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(client, fbdev);
+
+ fbdev->modes = known_modes;
+ fbdev->client = client;
+
+ fbdev->fb_len =
+ mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres *
+ (fbdev->modes[mode].bpp / 8);
+
+ fbdev->line_len =
+ fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8);
+
+ /* Workaround "PPI Does Not Start Properly In Specific Mode" */
+ if (ANOMALY_05000400) {
+ if (gpio_request(P_IDENT(P_PPI0_FS3), "PPI0_FS3")) {
+ dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
+ ret = -EBUSY;
+ goto out_8;
+ }
+ gpio_direction_output(P_IDENT(P_PPI0_FS3), 0);
+ }
+
+ if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
+ dev_err(&client->dev, "requesting PPI peripheral failed\n");
+ ret = -EFAULT;
+ goto out_8;
+ }
+
+ fbdev->fb_mem =
+ dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
+ GFP_KERNEL);
+
+ if (NULL == fbdev->fb_mem) {
+ dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
+ (u32) fbdev->fb_len);
+ ret = -ENOMEM;
+ goto out_7;
+ }
+
+ fbdev->info.screen_base = (void *)fbdev->fb_mem;
+ bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
+
+ bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
+ bfin_adv7393_fb_fix.line_length = fbdev->line_len;
+
+ if (mem > 1)
+ bfin_adv7393_fb_fix.ypanstep = 1;
+
+ bfin_adv7393_fb_defined.red.length = 5;
+ bfin_adv7393_fb_defined.green.length = 6;
+ bfin_adv7393_fb_defined.blue.length = 5;
+
+ bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
+ bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
+ bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
+ bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
+ bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
+
+ fbdev->info.fbops = &bfin_adv7393_fb_ops;
+ fbdev->info.var = bfin_adv7393_fb_defined;
+ fbdev->info.fix = bfin_adv7393_fb_fix;
+ fbdev->info.par = &bfin_par;
+ fbdev->info.flags = FBINFO_DEFAULT;
+
+ fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
+ if (!fbdev->info.pseudo_palette) {
+ dev_err(&client->dev, "failed to allocate pseudo_palette\n");
+ ret = -ENOMEM;
+ goto out_6;
+ }
+
+ if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
+ dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
+ BFIN_LCD_NBR_PALETTE_ENTRIES);
+ ret = -EFAULT;
+ goto out_5;
+ }
+
+ if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
+ dev_err(&client->dev, "unable to request PPI DMA\n");
+ ret = -EFAULT;
+ goto out_4;
+ }
+
+ if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, IRQF_DISABLED,
+ "PPI ERROR", fbdev) < 0) {
+ dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
+ ret = -EFAULT;
+ goto out_3;
+ }
+
+ fbdev->open = 0;
+
+ ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
+ fbdev->modes[mode].adv7393_i2c_initd_len);
+
+ if (ret) {
+ dev_err(&client->dev, "i2c attach: init error\n");
+ goto out_1;
+ }
+
+
+ if (register_framebuffer(&fbdev->info) < 0) {
+ dev_err(&client->dev, "unable to register framebuffer\n");
+ ret = -EFAULT;
+ goto out_1;
+ }
+
+ dev_info(&client->dev, "fb%d: %s frame buffer device\n",
+ fbdev->info.node, fbdev->info.fix.id);
+ dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
+
+ entry = create_proc_entry("driver/adv7393", 0, NULL);
+ if (!entry) {
+ dev_err(&client->dev, "unable to create /proc entry\n");
+ ret = -EFAULT;
+ goto out_0;
+ }
+
+ entry->read_proc = adv7393_read_proc;
+ entry->write_proc = adv7393_write_proc;
+ entry->data = fbdev;
+
+ return 0;
+
+ out_0:
+ unregister_framebuffer(&fbdev->info);
+ out_1:
+ free_irq(IRQ_PPI_ERROR, fbdev);
+ out_3:
+ free_dma(CH_PPI);
+ out_4:
+ dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
+ fbdev->dma_handle);
+ out_5:
+ fb_dealloc_cmap(&fbdev->info.cmap);
+ out_6:
+ kfree(fbdev->info.pseudo_palette);
+ out_7:
+ peripheral_free_list(ppi_pins);
+ out_8:
+ kfree(fbdev);
+
+ return ret;
+}
+
+static int bfin_adv7393_fb_open(struct fb_info *info, int user)
+{
+ struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
+
+ fbdev->info.screen_base = (void *)fbdev->fb_mem;
+ if (!fbdev->info.screen_base) {
+ dev_err(&fbdev->client->dev, "unable to map device\n");
+ return -ENOMEM;
+ }
+
+ fbdev->open = 1;
+ dma_desc_list(fbdev, BUILD);
+ adv7393_mode(fbdev->client, BLANK_OFF);
+ bfin_config_ppi(fbdev);
+ bfin_config_dma(fbdev);
+ bfin_enable_ppi();
+
+ return 0;
+}
+
+static int bfin_adv7393_fb_release(struct fb_info *info, int user)
+{
+ struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
+
+ adv7393_mode(fbdev->client, BLANK_ON);
+ bfin_disable_dma();
+ bfin_disable_ppi();
+ dma_desc_list(fbdev, DESTRUCT);
+ fbdev->open = 0;
+ return 0;
+}
+
+static int
+bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+
+ switch (var->bits_per_pixel) {
+ case 16:/* DIRECTCOLOUR, 64k */
+ var->red.offset = info->var.red.offset;
+ var->green.offset = info->var.green.offset;
+ var->blue.offset = info->var.blue.offset;
+ var->red.length = info->var.red.length;
+ var->green.length = info->var.green.length;
+ var->blue.length = info->var.blue.length;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ var->transp.msb_right = 0;
+ var->red.msb_right = 0;
+ var->green.msb_right = 0;
+ var->blue.msb_right = 0;
+ break;
+ default:
+ pr_debug("%s: depth not supported: %u BPP\n", __func__,
+ var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ if (info->var.xres != var->xres ||
+ info->var.yres != var->yres ||
+ info->var.xres_virtual != var->xres_virtual ||
+ info->var.yres_virtual != var->yres_virtual) {
+ pr_debug("%s: Resolution not supported: X%u x Y%u\n",
+ __func__, var->xres, var->yres);
+ return -EINVAL;
+ }
+
+ /*
+ * Memory limit
+ */
+
+ if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
+ pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
+ __func__, var->yres_virtual);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int
+bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ int dy;
+ u32 dmaaddr;
+ struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
+
+ if (!var || !info)
+ return -EINVAL;
+
+ if (var->xoffset - info->var.xoffset) {
+ /* No support for X panning for now! */
+ return -EINVAL;
+ }
+ dy = var->yoffset - info->var.yoffset;
+
+ if (dy) {
+ pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
+
+ dmaaddr = fbdev->av1->start_addr;
+ dmaaddr += (info->fix.line_length * dy);
+ /* TODO: Wait for current frame to finished */
+
+ fbdev->av1->start_addr = (unsigned long)dmaaddr;
+ fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
+ }
+
+ return 0;
+
+}
+
+/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
+static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
+{
+ struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
+
+ switch (blank) {
+
+ case VESA_NO_BLANKING:
+ /* Turn on panel */
+ adv7393_mode(fbdev->client, BLANK_OFF);
+ break;
+
+ case VESA_VSYNC_SUSPEND:
+ case VESA_HSYNC_SUSPEND:
+ case VESA_POWERDOWN:
+ /* Turn off panel */
+ adv7393_mode(fbdev->client, BLANK_ON);
+ break;
+
+ default:
+ return -EINVAL;
+ break;
+ }
+ return 0;
+}
+
+int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+ if (nocursor)
+ return 0;
+ else
+ return -EINVAL; /* just to force soft_cursor() call */
+}
+
+static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
+ u_int blue, u_int transp,
+ struct fb_info *info)
+{
+ if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
+ return -EINVAL;
+
+ if (info->var.grayscale)
+ /* grayscale = 0.30*R + 0.59*G + 0.11*B */
+ red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
+
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
+ u32 value;
+ /* Place color in the pseudopalette */
+ if (regno > 16)
+ return -EINVAL;
+
+ red >>= (16 - info->var.red.length);
+ green >>= (16 - info->var.green.length);
+ blue >>= (16 - info->var.blue.length);
+
+ value = (red << info->var.red.offset) |
+ (green << info->var.green.offset)|
+ (blue << info->var.blue.offset);
+ value &= 0xFFFF;
+
+ ((u32 *) (info->pseudo_palette))[regno] = value;
+ }
+
+ return 0;
+}
+
+static int __devexit bfin_adv7393_fb_remove(struct i2c_client *client)
+{
+ struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
+
+ adv7393_mode(client, POWER_DOWN);
+
+ if (fbdev->fb_mem)
+ dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
+ free_dma(CH_PPI);
+ free_irq(IRQ_PPI_ERROR, fbdev);
+ unregister_framebuffer(&fbdev->info);
+ remove_proc_entry("driver/adv7393", NULL);
+ fb_dealloc_cmap(&fbdev->info.cmap);
+ kfree(fbdev->info.pseudo_palette);
+
+ if (ANOMALY_05000400)
+ gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */
+ peripheral_free_list(ppi_pins);
+ kfree(fbdev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int bfin_adv7393_fb_suspend(struct device *dev)
+{
+ struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
+
+ if (fbdev->open) {
+ bfin_disable_dma();
+ bfin_disable_ppi();
+ dma_desc_list(fbdev, DESTRUCT);
+ }
+ adv7393_mode(fbdev->client, POWER_DOWN);
+
+ return 0;
+}
+
+static int bfin_adv7393_fb_resume(struct device *dev)
+{
+ struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
+
+ adv7393_mode(fbdev->client, POWER_ON);
+
+ if (fbdev->open) {
+ dma_desc_list(fbdev, BUILD);
+ bfin_config_ppi(fbdev);
+ bfin_config_dma(fbdev);
+ bfin_enable_ppi();
+ }
+
+ return 0;
+}
+
+static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
+ .suspend = bfin_adv7393_fb_suspend,
+ .resume = bfin_adv7393_fb_resume,
+};
+#endif
+
+static const struct i2c_device_id bfin_adv7393_id[] = {
+ {DRIVER_NAME, 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
+
+static struct i2c_driver bfin_adv7393_fb_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+#ifdef CONFIG_PM
+ .pm = &bfin_adv7393_dev_pm_ops,
+#endif
+ },
+ .probe = bfin_adv7393_fb_probe,
+ .remove = __devexit_p(bfin_adv7393_fb_remove),
+ .id_table = bfin_adv7393_id,
+};
+
+static int __init bfin_adv7393_fb_driver_init(void)
+{
+#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
+ request_module("i2c-bfin-twi");
+#else
+ request_module("i2c-gpio");
+#endif
+
+ return i2c_add_driver(&bfin_adv7393_fb_driver);
+}
+module_init(bfin_adv7393_fb_driver_init);
+
+static void __exit bfin_adv7393_fb_driver_cleanup(void)
+{
+ i2c_del_driver(&bfin_adv7393_fb_driver);
+}
+module_exit(bfin_adv7393_fb_driver_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
+
+module_param(mode, int, 0);
+MODULE_PARM_DESC(mode,
+ "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
+
+module_param(mem, int, 0);
+MODULE_PARM_DESC(mem,
+ "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
+
+module_param(nocursor, int, 0644);
+MODULE_PARM_DESC(nocursor, "cursor enable/disable");
projects / mv-sheeva.git / blobdiff