/*
* 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, 0,
"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");
