OMAP2 and OMAP3/AM4 have limitations with the scaler:
- OMAP2 can only scale XRGB8888
- OMAP3/AM4 can only scale XRGB8888, RGB565, YUYV and UYVY
The driver doesn't check these limitations, which leads to sync-lost
floods.
This patch adds a check for the pixel formats when scaling.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/omapdrm/dss/dispc.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/dss/dispc.c b/drivers/gpu/drm/omapdrm/dss/dispc.c
index 3c9315b17ef2..c19e0af33013 100644
--- a/drivers/gpu/drm/omapdrm/dss/dispc.c
+++ b/drivers/gpu/drm/omapdrm/dss/dispc.c
@@ -114,6 +114,7 @@ struct dispc_features {
const unsigned int num_reg_fields;
const enum omap_overlay_caps *overlay_caps;
const u32 **supported_color_modes;
+ const u32 *supported_scaler_color_modes;
unsigned int num_mgrs;
unsigned int num_ovls;
unsigned int buffer_size_unit;
@@ -2499,6 +2500,19 @@ static int dispc_ovl_calc_scaling(struct dispc_device *dispc,
if (width == out_width && height == out_height)
return 0;
+ if (dispc->feat->supported_scaler_color_modes) {
+ const u32 *modes = dispc->feat->supported_scaler_color_modes;
+ unsigned int i;
+
+ for (i = 0; modes[i]; ++i) {
+ if (modes[i] == fourcc)
+ break;
+ }
+
+ if (modes[i] == 0)
+ return -EINVAL;
+ }
+
if (plane == OMAP_DSS_WB) {
switch (fourcc) {
case DRM_FORMAT_NV12:
@@ -4214,6 +4228,12 @@ static const u32 *omap4_dispc_supported_color_modes[] = {
DRM_FORMAT_RGBX8888),
};
+static const u32 omap3_dispc_supported_scaler_color_modes[] = {
+ DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_YUYV,
+ DRM_FORMAT_UYVY,
+ 0,
+};
+
static const struct dispc_features omap24xx_dispc_feats = {
.sw_start = 5,
.fp_start = 15,
@@ -4242,6 +4262,7 @@ static const struct dispc_features omap24xx_dispc_feats = {
.num_reg_fields = ARRAY_SIZE(omap2_dispc_reg_fields),
.overlay_caps = omap2_dispc_overlay_caps,
.supported_color_modes = omap2_dispc_supported_color_modes,
+ .supported_scaler_color_modes = COLOR_ARRAY(DRM_FORMAT_XRGB8888),
.num_mgrs = 2,
.num_ovls = 3,
.buffer_size_unit = 1,
@@ -4276,6 +4297,7 @@ static const struct dispc_features omap34xx_rev1_0_dispc_feats = {
.num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
.overlay_caps = omap3430_dispc_overlay_caps,
.supported_color_modes = omap3_dispc_supported_color_modes,
+ .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
.num_mgrs = 2,
.num_ovls = 3,
.buffer_size_unit = 1,
@@ -4310,6 +4332,7 @@ static const struct dispc_features omap34xx_rev3_0_dispc_feats = {
.num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
.overlay_caps = omap3430_dispc_overlay_caps,
.supported_color_modes = omap3_dispc_supported_color_modes,
+ .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
.num_mgrs = 2,
.num_ovls = 3,
.buffer_size_unit = 1,
@@ -4344,6 +4367,7 @@ static const struct dispc_features omap36xx_dispc_feats = {
.num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
.overlay_caps = omap3630_dispc_overlay_caps,
.supported_color_modes = omap3_dispc_supported_color_modes,
+ .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
.num_mgrs = 2,
.num_ovls = 3,
.buffer_size_unit = 1,
@@ -4378,6 +4402,7 @@ static const struct dispc_features am43xx_dispc_feats = {
.num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
.overlay_caps = omap3430_dispc_overlay_caps,
.supported_color_modes = omap3_dispc_supported_color_modes,
+ .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
.num_mgrs = 1,
.num_ovls = 3,
.buffer_size_unit = 1,
--
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