diff options
Diffstat (limited to 'drivers/video/bfin_adv7393fb.c')
| -rw-r--r-- | drivers/video/bfin_adv7393fb.c | 832 |
1 files changed, 832 insertions, 0 deletions
diff --git a/drivers/video/bfin_adv7393fb.c b/drivers/video/bfin_adv7393fb.c new file mode 100644 index 00000000000..8486f541156 --- /dev/null +++ b/drivers/video/bfin_adv7393fb.c @@ -0,0 +1,832 @@ +/* + * 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"); |