drm/omap: remove dma & vrfb rotation

We have three rotation methods supported by the SoCs with DSS: DMA,
VRFB and TILER.

DMA rotation works in theory on all DSS platforms, but in practice it's
unusable due to the huge amount of memory bandwidth it uses, and has
never really been used.

VRFB is available on OMAP3, but is not supported by omapdrm, even though
we have some code for it in the dispc driver.

TILER is supported on OMAP4/OMAP5/DRA7/AM5 platforms, but has some
driver bugs.

To clean up the driver to help fixing the TILER issues, this patch drops
the DMA and VRFB rotation support, leaving only TILER rotation.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 0 insertions, 16 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/dss_features.c b/drivers/gpu/drm/omapdrm/dss/dss_features.c
index 135b2a511cf0..bdac1d645ef0 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss_features.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss_features.c
@@ -51,8 +51,6 @@ struct omap_dss_features {
 	const enum omap_overlay_caps *overlay_caps;
 	const struct dss_param_range *dss_params;
 
-	const enum omap_dss_rotation_type supported_rotation_types;
-
 	const u32 buffer_size_unit;
 	const u32 burst_size_unit;
 };
@@ -596,7 +594,6 @@ static const struct omap_dss_features omap2_dss_features = {
 	.supported_color_modes = omap2_dss_supported_color_modes,
 	.overlay_caps = omap2_dss_overlay_caps,
 	.dss_params = omap2_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_VRFB,
 	.buffer_size_unit = 1,
 	.burst_size_unit = 8,
 };
@@ -616,7 +613,6 @@ static const struct omap_dss_features omap3430_dss_features = {
 	.supported_color_modes = omap3_dss_supported_color_modes,
 	.overlay_caps = omap3430_dss_overlay_caps,
 	.dss_params = omap3_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_VRFB,
 	.buffer_size_unit = 1,
 	.burst_size_unit = 8,
 };
@@ -639,7 +635,6 @@ static const struct omap_dss_features am35xx_dss_features = {
 	.supported_color_modes = omap3_dss_supported_color_modes,
 	.overlay_caps = omap3430_dss_overlay_caps,
 	.dss_params = omap3_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_VRFB,
 	.buffer_size_unit = 1,
 	.burst_size_unit = 8,
 };
@@ -658,7 +653,6 @@ static const struct omap_dss_features am43xx_dss_features = {
 	.supported_color_modes = omap3_dss_supported_color_modes,
 	.overlay_caps = omap3430_dss_overlay_caps,
 	.dss_params = am43xx_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA,
 	.buffer_size_unit = 1,
 	.burst_size_unit = 8,
 };
@@ -677,7 +671,6 @@ static const struct omap_dss_features omap3630_dss_features = {
 	.supported_color_modes = omap3_dss_supported_color_modes,
 	.overlay_caps = omap3630_dss_overlay_caps,
 	.dss_params = omap3_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_VRFB,
 	.buffer_size_unit = 1,
 	.burst_size_unit = 8,
 };
@@ -698,7 +691,6 @@ static const struct omap_dss_features omap4430_es1_0_dss_features  = {
 	.supported_color_modes = omap4_dss_supported_color_modes,
 	.overlay_caps = omap4_dss_overlay_caps,
 	.dss_params = omap4_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_TILER,
 	.buffer_size_unit = 16,
 	.burst_size_unit = 16,
 };
@@ -718,7 +710,6 @@ static const struct omap_dss_features omap4430_es2_0_1_2_dss_features = {
 	.supported_color_modes = omap4_dss_supported_color_modes,
 	.overlay_caps = omap4_dss_overlay_caps,
 	.dss_params = omap4_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_TILER,
 	.buffer_size_unit = 16,
 	.burst_size_unit = 16,
 };
@@ -738,7 +729,6 @@ static const struct omap_dss_features omap4_dss_features = {
 	.supported_color_modes = omap4_dss_supported_color_modes,
 	.overlay_caps = omap4_dss_overlay_caps,
 	.dss_params = omap4_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_TILER,
 	.buffer_size_unit = 16,
 	.burst_size_unit = 16,
 };
@@ -758,7 +748,6 @@ static const struct omap_dss_features omap5_dss_features = {
 	.supported_color_modes = omap4_dss_supported_color_modes,
 	.overlay_caps = omap4_dss_overlay_caps,
 	.dss_params = omap5_dss_param_range,
-	.supported_rotation_types = OMAP_DSS_ROT_DMA | OMAP_DSS_ROT_TILER,
 	.buffer_size_unit = 16,
 	.burst_size_unit = 16,
 };
@@ -845,11 +834,6 @@ void dss_feat_get_reg_field(enum dss_feat_reg_field id, u8 *start, u8 *end)
 	*end = omap_current_dss_features->reg_fields[id].end;
 }
 
-bool dss_feat_rotation_type_supported(enum omap_dss_rotation_type rot_type)
-{
-	return omap_current_dss_features->supported_rotation_types & rot_type;
-}
-
 void dss_features_init(enum omapdss_version version)
 {
 	switch (version) {