This patch checks a support of YCBCR420 outputs on an encoder level.
If the input mode is YCBCR420-only mode then it prepares DP as an YCBCR420
output, else it continues with RGB output mode.
It set output_format to INTEL_OUTPUT_FORMAT_YCBCR420 in order to using
a pipe scaler as RGB to YCbCr 4:4:4.
v2:
Addressed review comments from Ville.
Style fixed with few naming.
%s/config/crtc_state/
%s/intel_crtc/crtc/
If lscon is active, it makes not to call intel_dp_ycbcr420_config()
to avoid to clobber of lspcon_ycbcr420_config() routine.
And it move the 420_only check into the intel_dp_ycbcr420_config().
v3: Fix uninitialized return value and it is reported by Dan Carpenter.
v4:
Addressed review comments from Ville.
In order to avoid the extra indentation, it inverts if-clause on
intel_dp_ycbcr420_config().
Remove the error print where no errors print are allowed.
v6: Rebase
v7:
Move intel_dp_get_colorimetry_status() to intel_dp from intel_psr.
intel_dp_get_colorimetry_status() checks
VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit in the
DPRX_FEATURE_ENUMERATION_LIST register.
And intel_dp_ycbcr420_config() uses intel_dp_get_colorimetry_status().
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 48 +++++++++++++++++++++++++++++++-
drivers/gpu/drm/i915/intel_dp.h | 1 +
drivers/gpu/drm/i915/intel_psr.c | 10 -------
3 files changed, 48 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 53cc4afea256..9f219f8f0c71 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2085,6 +2085,36 @@ intel_dp_compute_link_config(struct intel_encoder *encoder,
return 0;
}
+static int
+intel_dp_ycbcr420_config(struct intel_dp *intel_dp,
+ struct drm_connector *connector,
+ struct intel_crtc_state *crtc_state)
+{
+ const struct drm_display_info *info = &connector->display_info;
+ const struct drm_display_mode *adjusted_mode =
+ &crtc_state->base.adjusted_mode;
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ int ret;
+
+ if (!drm_mode_is_420_only(info, adjusted_mode) ||
+ !intel_dp_get_colorimetry_status(intel_dp) ||
+ !connector->ycbcr_420_allowed)
+ return 0;
+
+ crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR420;
+
+ /* YCBCR 420 output conversion needs a scaler */
+ ret = skl_update_scaler_crtc(crtc_state);
+ if (ret) {
+ DRM_DEBUG_KMS("Scaler allocation for output failed\n");
+ return ret;
+ }
+
+ intel_pch_panel_fitting(crtc, crtc_state, DRM_MODE_SCALE_FULLSCREEN);
+
+ return 0;
+}
+
bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
@@ -2124,7 +2154,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
to_intel_digital_connector_state(conn_state);
bool constant_n = drm_dp_has_quirk(&intel_dp->desc,
DP_DPCD_QUIRK_CONSTANT_N);
- int ret, output_bpp;
+ int ret = 0, output_bpp;
if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && port != PORT_A)
pipe_config->has_pch_encoder = true;
@@ -2132,6 +2162,12 @@ intel_dp_compute_config(struct intel_encoder *encoder,
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
if (lspcon->active)
lspcon_ycbcr420_config(&intel_connector->base, pipe_config);
+ else
+ ret = intel_dp_ycbcr420_config(intel_dp, &intel_connector->base,
+ pipe_config);
+
+ if (ret)
+ return ret;
pipe_config->has_drrs = false;
if (IS_G4X(dev_priv) || port == PORT_A)
@@ -4051,6 +4087,16 @@ intel_dp_read_dpcd(struct intel_dp *intel_dp)
return intel_dp->dpcd[DP_DPCD_REV] != 0;
}
+bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
+{
+ u8 dprx = 0;
+
+ if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST,
+ &dprx) != 1)
+ return false;
+ return dprx & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED;
+}
+
static void intel_dp_get_dsc_sink_cap(struct intel_dp *intel_dp)
{
/*
diff --git a/drivers/gpu/drm/i915/intel_dp.h b/drivers/gpu/drm/i915/intel_dp.h
index 5e9e8d13de6e..da70b1a41c83 100644
--- a/drivers/gpu/drm/i915/intel_dp.h
+++ b/drivers/gpu/drm/i915/intel_dp.h
@@ -108,6 +108,7 @@ u8 intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp, int mode_clock,
int mode_hdisplay);
bool intel_dp_read_dpcd(struct intel_dp *intel_dp);
+bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp);
int intel_dp_link_required(int pixel_clock, int bpp);
int intel_dp_max_data_rate(int max_link_clock, int max_lanes);
bool intel_digital_port_connected(struct intel_encoder *encoder);
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 963663ba0edf..2a547a128a37 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -229,16 +229,6 @@ void intel_psr_irq_handler(struct drm_i915_private *dev_priv, u32 psr_iir)
}
}
-static bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
-{
- u8 dprx = 0;
-
- if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST,
- &dprx) != 1)
- return false;
- return dprx & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED;
-}
-
static bool intel_dp_get_alpm_status(struct intel_dp *intel_dp)
{
u8 alpm_caps = 0;
--
2.21.0
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