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fbdev: sh_mobile_lcdc: increase maximum framebuffer size to support 1080p

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LCDC hardware can support 1920x1080 formats, adjust the driver to cover them.
Besides, instead of guessing some "reasonable" validity checks, only verify
values in .fb_check_var(), that we are sure, we cannot support.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski 2010-11-04 11:06:06 +00:00 committed by Paul Mundt
parent 8c183ecee2
commit d2ecbab596
1 changed files with 8 additions and 18 deletions
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26
drivers/video/sh_mobile_lcdcfb.c
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@ -54,8 +54,8 @@ static int lcdc_shared_regs[] = {
};
#define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs)
#define DEFAULT_XRES 1280
#define DEFAULT_YRES 1024
#define MAX_XRES 1920
#define MAX_YRES 1080
static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
[LDDCKPAT1R] = 0x400,
@ -914,22 +914,12 @@ static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *in
{
struct sh_mobile_lcdc_chan *ch = info->par;
if (var->xres < 160 || var->xres > 1920 ||
var->yres < 120 || var->yres > 1080 ||
var->left_margin < 32 || var->left_margin > 320 ||
var->right_margin < 12 || var->right_margin > 240 ||
var->upper_margin < 12 || var->upper_margin > 120 ||
var->lower_margin < 1 || var->lower_margin > 64 ||
var->hsync_len < 32 || var->hsync_len > 240 ||
var->vsync_len < 2 || var->vsync_len > 64 ||
var->pixclock < 6000 || var->pixclock > 40000 ||
if (var->xres > MAX_XRES || var->yres > MAX_YRES ||
var->xres * var->yres * (ch->cfg.bpp / 8) * 2 > info->fix.smem_len) {
dev_warn(info->dev, "Invalid info: %u %u %u %u %u %u %u %u %u!\n",
var->xres, var->yres,
var->left_margin, var->right_margin,
var->upper_margin, var->lower_margin,
var->hsync_len, var->vsync_len,
var->pixclock);
dev_warn(info->dev, "Invalid info: %u-%u-%u-%u x %u-%u-%u-%u @ %ukHz!\n",
var->left_margin, var->xres, var->right_margin, var->hsync_len,
var->upper_margin, var->yres, var->lower_margin, var->vsync_len,
PICOS2KHZ(var->pixclock));
return -EINVAL;
}
return 0;
@ -1226,7 +1216,7 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
}
if (!mode)
max_size = DEFAULT_XRES * DEFAULT_YRES;
max_size = MAX_XRES * MAX_YRES;
else if (max_cfg)
dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n",
max_cfg->xres, max_cfg->yres);