[PATCH] powerpc: Fix platinumfb for some modes
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>
diff --git a/drivers/video/platinumfb.c b/drivers/video/platinumfb.c
index ca4082a..ba0af1b 100644
--- a/drivers/video/platinumfb.c
+++ b/drivers/video/platinumfb.c
@@ -138,13 +138,15 @@
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 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) { \