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[PATCH] powerpc: Fix platinumfb for some modes

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The platinumfb driver used only on some powermacs has an issue with some
video modes & limited VRAM. This patch fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2005-12-13 17:48:35 +11:00
committed by Paul Mackerras
parent f75225d0a0
commit 9cf84d7c97
2 changed files with 11 additions and 5 deletions
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drivers/video/platinumfb.c
+8 -4
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@@ -138,13 +138,15 @@ static int platinumfb_set_par (struct fb_info *info)
init = platinum_reg_init[pinfo->vmode-1];
if (pinfo->vmode == 13 && pinfo->cmode > 0)
offset = 0x10;
if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8))
offset = 0x10;
info->screen_base = pinfo->frame_buffer + init->fb_offset + offset;
info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset;
info->fix.visual = (pinfo->cmode == CMODE_8) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode) + offset;
info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode)
+ offset;
printk("line_length: %x\n", info->fix.line_length);
return 0;
}
@@ -221,7 +223,9 @@ static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
static inline int platinum_vram_reqd(int video_mode, int color_mode)
{
return vmode_attrs[video_mode-1].vres *
(vmode_attrs[video_mode-1].hres * (1<<color_mode) + 0x20) +0x1000;
(vmode_attrs[video_mode-1].hres * (1<<color_mode) +
((video_mode == VMODE_832_624_75) &&
(color_mode > CMODE_8)) ? 0x10 : 0x20) + 0x1000;
}
#define STORE_D2(a, d) { \