vmwgfx: Add support for depth 8

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index 7b8115aab54d..c6d09a618353 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -83,6 +83,15 @@ static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
                                    u16 *r, u16 *g, u16 *b,
                                    uint32_t start, uint32_t size)
 {
+        struct vmw_private *dev_priv = vmw_priv(crtc->dev);
+        int i;
+
+        for (i = 0; i < size; i++) {
+                DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i, r[i], g[i], b[i]);
+                vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
+                vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
+                vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
+        }
 }
 
 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
@@ -547,6 +556,8 @@ static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 
         drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
 
+        drm_mode_crtc_set_gamma_size(crtc, 256);
+
         drm_connector_attach_property(connector,
                                       dev->mode_config.dirty_info_property,
                                       1);