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fbdev: sh_mobile_lcdcfb: allocate memory, sufficient for the biggest mode

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Now, that we add support for multiple modes to the sh_mobile_lcdcfb driver, it
has to allocate memory, sufficient for the biggest of them.

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 2010-09-03 07:20:12 +00:00 committed by Paul Mundt
parent baf1637499
commit 71d3b0fcad
1 changed files with 20 additions and 6 deletions
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26
drivers/video/sh_mobile_lcdcfb.c
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@ -1103,8 +1103,10 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
for (i = 0; i < j; i++) {
struct fb_var_screeninfo *var;
const struct fb_videomode *lcd_cfg;
const struct fb_videomode *lcd_cfg, *max_cfg = NULL;
struct sh_mobile_lcdc_chan *ch = priv->ch + i;
unsigned long max_size = 0;
int k;
cfg = &ch->cfg;
@ -1117,9 +1119,8 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
info = ch->info;
var = &info->var;
lcd_cfg = &cfg->lcd_cfg[0];
info->fbops = &sh_mobile_lcdc_ops;
fb_videomode_to_var(var, lcd_cfg);
fb_videomode_to_var(var, &cfg->lcd_cfg[0]);
/* Default Y virtual resolution is 2x panel size */
var->yres_virtual = var->yres * 2;
@ -1127,10 +1128,23 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
if (error)
break;
for (k = 0, lcd_cfg = cfg->lcd_cfg;
k < cfg->num_cfg;
k++, lcd_cfg++) {
unsigned long size = lcd_cfg->yres * lcd_cfg->xres;
if (size > max_size) {
max_cfg = lcd_cfg;
max_size = size;
}
}
dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n",
max_cfg->xres, max_cfg->yres);
info->fix = sh_mobile_lcdc_fix;
info->fix.line_length = lcd_cfg->xres * (cfg->bpp / 8);
info->fix.smem_len = info->fix.line_length *
var->yres_virtual;
info->fix.line_length = cfg->lcd_cfg[0].xres * (cfg->bpp / 8);
info->fix.smem_len = max_size * (cfg->bpp / 8) * 2;
buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
&ch->dma_handle, GFP_KERNEL);