gma500: plug in more of the gamma functionality

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index c1c4dc174fa2..973822971e8e 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -556,11 +556,21 @@ static struct drm_framebuffer *psb_user_framebuffer_create
 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
                                                         u16 blue, int regno)
 {
+        struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc);
+
+        intel_crtc->lut_r[regno] = red >> 8;
+        intel_crtc->lut_g[regno] = green >> 8;
+        intel_crtc->lut_b[regno] = blue >> 8;
 }
 
 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
                                         u16 *green, u16 *blue, int regno)
 {
+        struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc);
+
+        *red = intel_crtc->lut_r[regno] << 8;
+        *green = intel_crtc->lut_g[regno] << 8;
+        *blue = intel_crtc->lut_b[regno] << 8;
 }
 
 static int psbfb_probe(struct drm_fb_helper *helper,