drm/fb-helper: Remove dead code in setcolreg
DRM fbdev emulation only supports pallete_color with depth == 8, and
truecolor with depth > 8. Handling depth == 16 for palettes is hence
dead code, let's remove it.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1459331485-28376-3-git-send-email-daniel.vetter@ffwll.ch
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 7c2eb75..7590df5 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1042,7 +1042,6 @@
{
struct drm_fb_helper *fb_helper = info->par;
struct drm_framebuffer *fb = fb_helper->fb;
- int pindex;
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
u32 *palette;
@@ -1074,38 +1073,10 @@
!fb_helper->funcs->gamma_get))
return -EINVAL;
- pindex = regno;
+ WARN_ON(fb->bits_per_pixel != 8);
- if (fb->bits_per_pixel == 16) {
- pindex = regno << 3;
+ fb_helper->funcs->gamma_set(crtc, red, green, blue, regno);
- if (fb->depth == 16 && regno > 63)
- return -EINVAL;
- if (fb->depth == 15 && regno > 31)
- return -EINVAL;
-
- if (fb->depth == 16) {
- u16 r, g, b;
- int i;
- if (regno < 32) {
- for (i = 0; i < 8; i++)
- fb_helper->funcs->gamma_set(crtc, red,
- green, blue, pindex + i);
- }
-
- fb_helper->funcs->gamma_get(crtc, &r,
- &g, &b,
- pindex >> 1);
-
- for (i = 0; i < 4; i++)
- fb_helper->funcs->gamma_set(crtc, r,
- green, b,
- (pindex >> 1) + i);
- }
- }
-
- if (fb->depth != 16)
- fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
return 0;
}