diff options
| author | Rob Clark <rob@ti.com> | 2011-02-13 14:14:47 -0600 |
|---|---|---|
| committer | Andy Doan <doanac@gmail.com> | 2011-04-13 15:26:59 -0700 |
| commit | 4a7f2b6a75f68814cd3fff534f7163bb209cbce8 (patch) | |
| tree | 3ae5971f4ed3d392c2f0fcec34b169ce9f1d6001 /drivers/gpu/drm | |
| parent | 6e82144b365857918caeb185edb28a3af7dde9a6 (diff) | |
drm: psuedocolor support for ARGB modes
If there is an alpha channel, need to mask in 1's in the alpha channel
to prevent the fb from being completely transparent.
Signed-off-by: Rob Clark <rob@ti.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index f73ef4390db..95072047396 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -627,6 +627,11 @@ static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, value = (red << info->var.red.offset) | (green << info->var.green.offset) | (blue << info->var.blue.offset); + if (info->var.transp.length > 0) { + u32 mask = (1 << info->var.transp.length) - 1; + mask <<= info->var.transp.offset; + value |= mask; + } palette[regno] = value; return 0; } |