[Why]
The custom "max bpc" property was added to limit color depth while the
DRM one was still being merged. It's been a few kernel versions since
then and this TODO was still sticking around.
[How]
Attach the DRM max bpc property to the connector and drop all of our
custom property management. Set the max bpc to 8 by default since
DRM defaults to the max in the range which would be 16 in this case.
No behavioral changes are intended with this patch, it should just be
a refactor.
Cc: Leo Li <sunpeng...@amd.com>
Cc: Harry Wentland <harry.wentl...@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Acked-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 4 ---
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 2 --
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 29 ++++++++-----------
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 -
4 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 4e944737b708..767ee6991ef4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -631,10 +631,6 @@ int amdgpu_display_modeset_create_props(struct
amdgpu_device *adev)
amdgpu_dither_enum_list, sz);
if (amdgpu_device_has_dc_support(adev)) {
- adev->mode_info.max_bpc_property =
- drm_property_create_range(adev->ddev, 0, "max bpc", 8,
16);
- if (!adev->mode_info.max_bpc_property)
- return -ENOMEM;
adev->mode_info.abm_level_property =
drm_property_create_range(adev->ddev, 0,
"abm level", 0, 4);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index c7940af42f76..8bda00ce8816 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -332,8 +332,6 @@ struct amdgpu_mode_info {
struct drm_property *audio_property;
/* FMT dithering */
struct drm_property *dither_property;
- /* maximum number of bits per channel for monitor color */
- struct drm_property *max_bpc_property;
/* Adaptive Backlight Modulation (power feature) */
struct drm_property *abm_level_property;
/* it is used to allow enablement of freesync mode */
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 4a1755bce96c..b8e88209ef5d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3040,14 +3040,14 @@ static void update_stream_scaling_settings(const struct
drm_display_mode *mode,
static enum dc_color_depth
convert_color_depth_from_display_info(const struct drm_connector *connector)
{
- struct dm_connector_state *dm_conn_state =
- to_dm_connector_state(connector->state);
uint32_t bpc = connector->display_info.bpc;
- /* TODO: Remove this when there's support for max_bpc in drm */
- if (dm_conn_state && bpc > dm_conn_state->max_bpc)
- /* Round down to nearest even number. */
- bpc = dm_conn_state->max_bpc - (dm_conn_state->max_bpc & 1);
+ /* TODO: Use passed in state instead of the current state. */
+ if (connector->state) {
+ bpc = connector->state->max_bpc;
+ /* Round down to the nearest even number. */
+ bpc = bpc - (bpc & 1);
+ }
switch (bpc) {
case 0:
@@ -3689,9 +3689,6 @@ int amdgpu_dm_connector_atomic_set_property(struct
drm_connector *connector,
} else if (property == adev->mode_info.underscan_property) {
dm_new_state->underscan_enable = val;
ret = 0;
- } else if (property == adev->mode_info.max_bpc_property) {
- dm_new_state->max_bpc = val;
- ret = 0;
} else if (property == adev->mode_info.abm_level_property) {
dm_new_state->abm_level = val;
ret = 0;
@@ -3743,9 +3740,6 @@ int amdgpu_dm_connector_atomic_get_property(struct
drm_connector *connector,
} else if (property == adev->mode_info.underscan_property) {
*val = dm_state->underscan_enable;
ret = 0;
- } else if (property == adev->mode_info.max_bpc_property) {
- *val = dm_state->max_bpc;
- ret = 0;
} else if (property == adev->mode_info.abm_level_property) {
*val = dm_state->abm_level;
ret = 0;
@@ -3808,7 +3802,6 @@ void amdgpu_dm_connector_funcs_reset(struct drm_connector
*connector)
state->underscan_enable = false;
state->underscan_hborder = 0;
state->underscan_vborder = 0;
- state->max_bpc = 8;
__drm_atomic_helper_connector_reset(connector, &state->base);
}
@@ -3835,7 +3828,6 @@ amdgpu_dm_connector_atomic_duplicate_state(struct
drm_connector *connector)
new_state->underscan_enable = state->underscan_enable;
new_state->underscan_hborder = state->underscan_hborder;
new_state->underscan_vborder = state->underscan_vborder;
- new_state->max_bpc = state->max_bpc;
return &new_state->base;
}
@@ -4756,9 +4748,12 @@ void amdgpu_dm_connector_init_helper(struct
amdgpu_display_manager *dm,
drm_object_attach_property(&aconnector->base.base,
adev->mode_info.underscan_vborder_property,
0);
- drm_object_attach_property(&aconnector->base.base,
- adev->mode_info.max_bpc_property,
- 0);
+
+ drm_connector_attach_max_bpc_property(&aconnector->base, 8, 16);
+
+ /* This defaults to the max in the range, but we want 8bpc. */
+ aconnector->base.state->max_bpc = 8;
+ aconnector->base.state->max_requested_bpc = 8;
if (connector_type == DRM_MODE_CONNECTOR_eDP &&
dc_is_dmcu_initialized(adev->dm.dc)) {
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 2cbc26f5d6a6..3395f2e4d564 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -304,7 +304,6 @@ struct dm_connector_state {
enum amdgpu_rmx_type scaling;
uint8_t underscan_vborder;
uint8_t underscan_hborder;
- uint8_t max_bpc;
bool underscan_enable;
bool freesync_enable;
bool freesync_capable;
--
2.17.1
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