diff options
| author | Jordan Crouse <jordan.crouse@amd.com> | 2006-12-08 02:40:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:29:08 -0800 |
| commit | f378819a19e2b9639f17a1a82c5e12adc9512390 (patch) | |
| tree | ef6278a50642f63d3ae1667fe33e92fb78536f5b /drivers/video/geode/display_gx.c | |
| parent | 4c1979c8963528cc6f52203ae62162ed22e171f4 (diff) | |
[PATCH] gxfb: Fixups for the AMD Geode GX framebuffer driver
We cannot assume that the BIOS will be correctly setting up the hardware, so
set some bits in various display registers to enable video output. Allow an
advanced user to specify a frambuffer size, rather then probing the BIOS. All
of these fixes were prompted by the OLPC effort.
[akpm@osdl.org: cleanups]
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/geode/display_gx.c')
| -rw-r--r-- | drivers/video/geode/display_gx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/video/geode/display_gx.c b/drivers/video/geode/display_gx.c index 0245169366b..0f16e4bffc6 100644 --- a/drivers/video/geode/display_gx.c +++ b/drivers/video/geode/display_gx.c @@ -21,6 +21,12 @@ #include "geodefb.h" #include "display_gx.h" +#ifdef CONFIG_FB_GEODE_GX_SET_FBSIZE +unsigned int gx_frame_buffer_size(void) +{ + return CONFIG_FB_GEODE_GX_FBSIZE; +} +#else unsigned int gx_frame_buffer_size(void) { unsigned int val; @@ -35,6 +41,7 @@ unsigned int gx_frame_buffer_size(void) val = (unsigned int)(inw(0xAC1E)) & 0xFFl; return (val << 19); } +#endif int gx_line_delta(int xres, int bpp) { @@ -90,6 +97,7 @@ static void gx_set_mode(struct fb_info *info) writel(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2, par->dc_regs + DC_LINE_SIZE); + /* Enable graphics and video data and unmask address lines. */ dcfg |= DC_DCFG_GDEN | DC_DCFG_VDEN | DC_DCFG_A20M | DC_DCFG_A18M; |