OMAP: DSS2: Clean up DISPC color mode validation checks

The supported set of color modes varies for different DISPC pipelines(plane)
and omap version. This makes the checks for validation of a color mode more
complicated as new omap versions are added.

A dss_feature function is created which tells if a color_mode is supported
for a plane on the current omap revision.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

3 files changed, 14 insertions, 48 deletions

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 54ba8d3ad317..4e9ebdecc436 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -1550,29 +1550,12 @@ static int _dispc_setup_plane(enum omap_plane plane,
                                 height, pos_y, out_height);
         }
 
+        if (!dss_feat_color_mode_supported(plane, color_mode))
+                return -EINVAL;
+
         if (plane == OMAP_DSS_GFX) {
                 if (width != out_width || height != out_height)
                         return -EINVAL;
-
-                switch (color_mode) {
-                case OMAP_DSS_COLOR_ARGB16:
-                case OMAP_DSS_COLOR_ARGB32:
-                case OMAP_DSS_COLOR_RGBA32:
-                        if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
-                                return -EINVAL;
-                case OMAP_DSS_COLOR_RGBX32:
-                        if (cpu_is_omap24xx())
-                                return -EINVAL;
-                        /* fall through */
-                case OMAP_DSS_COLOR_RGB12U:
-                case OMAP_DSS_COLOR_RGB16:
-                case OMAP_DSS_COLOR_RGB24P:
-                case OMAP_DSS_COLOR_RGB24U:
-                        break;
-
-                default:
-                        return -EINVAL;
-                }
         } else {
                 /* video plane */
 
@@ -1586,35 +1569,9 @@ static int _dispc_setup_plane(enum omap_plane plane,
                    out_height > height * 8)
                         return -EINVAL;
 
-                switch (color_mode) {
-                case OMAP_DSS_COLOR_RGBX32:
-                case OMAP_DSS_COLOR_RGB12U:
-                        if (cpu_is_omap24xx())
-                                return -EINVAL;
-                        /* fall through */
-                case OMAP_DSS_COLOR_RGB16:
-                case OMAP_DSS_COLOR_RGB24P:
-                case OMAP_DSS_COLOR_RGB24U:
-                        break;
-
-                case OMAP_DSS_COLOR_ARGB16:
-                case OMAP_DSS_COLOR_ARGB32:
-                case OMAP_DSS_COLOR_RGBA32:
-                        if (!dss_has_feature(FEAT_GLOBAL_ALPHA))
-                                return -EINVAL;
-                        if (!dss_has_feature(FEAT_GLOBAL_ALPHA_VID1) &&
-                                        plane == OMAP_DSS_VIDEO1)
-                                return -EINVAL;
-                        break;
-
-                case OMAP_DSS_COLOR_YUV2:
-                case OMAP_DSS_COLOR_UYVY:
+                if (color_mode == OMAP_DSS_COLOR_YUV2 ||
+                        color_mode == OMAP_DSS_COLOR_UYVY)
                         cconv = 1;
-                        break;
-
-                default:
-                        return -EINVAL;
-                }
 
                 /* Must use 5-tap filter? */
                 five_taps = height > out_height * 2;
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 854deba4e0d8..620221f678f9 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -179,6 +179,13 @@ enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane plane)
         return omap_current_dss_features->supported_color_modes[plane];
 }
 
+bool dss_feat_color_mode_supported(enum omap_plane plane,
+                enum omap_color_mode color_mode)
+{
+        return omap_current_dss_features->supported_color_modes[plane] &
+                        color_mode;
+}
+
 /* DSS has_feature check */
 bool dss_has_feature(enum dss_feat_id id)
 {
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h
index aeb2eea454fc..806db43bab17 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -44,6 +44,8 @@ int dss_feat_get_num_mgrs(void);
 int dss_feat_get_num_ovls(void);
 enum omap_display_type dss_feat_get_supported_displays(enum omap_channel channel);
 enum omap_color_mode dss_feat_get_supported_color_modes(enum omap_plane plane);
+bool dss_feat_color_mode_supported(enum omap_plane plane,
+                enum omap_color_mode color_mode);
 
 bool dss_has_feature(enum dss_feat_id id);
 void dss_feat_get_reg_field(enum dss_feat_reg_field id, u8 *start, u8 *end);