[PATCH 1/6] drm/i915/dp: Extend program of VSC Header and DB for Colorimetry Format
Gwan-gyeong Mun
gwan-gyeong.mun at intel.com
Fri Aug 23 01:34:56 UTC 2019
It refactors and renames a function which handled vsc sdp header and data
block setup for supporting colorimetry format.
Function intel_dp_setup_vsc_sdp handles vsc sdp header and data block
setup for pixel encoding / colorimetry format.
In order to use colorspace information of a connector, it adds an argument
of drm_connector_state type.
Setup VSC header and data block in function intel_dp_setup_vsc_sdp for
pixel encoding / colorimetry format as per dp 1.4a spec, section 2.2.5.7.1,
table 2-119: VSC SDP Header Bytes, section 2.2.5.7.5,
table 2-120: VSC SDP Payload for DB16 through DB18.
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 2 +-
drivers/gpu/drm/i915/display/intel_display.h | 2 -
drivers/gpu/drm/i915/display/intel_dp.c | 68 ++++++++++++++++----
drivers/gpu/drm/i915/display/intel_dp.h | 3 +
4 files changed, 60 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 8eb2b3ec01ed..4f7ea0a35976 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3475,7 +3475,7 @@ static void intel_enable_ddi_dp(struct intel_encoder *encoder,
intel_edp_backlight_on(crtc_state, conn_state);
intel_psr_enable(intel_dp, crtc_state);
- intel_dp_ycbcr_420_enable(intel_dp, crtc_state);
+ intel_dp_vsc_enable(intel_dp, crtc_state, conn_state);
intel_edp_drrs_enable(intel_dp, crtc_state);
if (crtc_state->has_audio)
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index e57e6969051d..7bd59241fc32 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -499,8 +499,6 @@ void intel_dp_get_m_n(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
void intel_dp_set_m_n(const struct intel_crtc_state *crtc_state,
enum link_m_n_set m_n);
-void intel_dp_ycbcr_420_enable(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state);
int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
struct dpll *best_clock);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 5c45a3bb102d..55d5ab97061c 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4409,8 +4409,9 @@ u8 intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp,
}
static void
-intel_pixel_encoding_setup_vsc(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
+intel_dp_setup_vsc_sdp(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct dp_sdp vsc_sdp = {};
@@ -4431,13 +4432,55 @@ intel_pixel_encoding_setup_vsc(struct intel_dp *intel_dp,
*/
vsc_sdp.sdp_header.HB3 = 0x13;
- /*
- * YCbCr 420 = 3h DB16[7:4] ITU-R BT.601 = 0h, ITU-R BT.709 = 1h
- * DB16[3:0] DP 1.4a spec, Table 2-120
- */
- vsc_sdp.db[16] = 0x3 << 4; /* 0x3 << 4 , YCbCr 420*/
- /* RGB->YCBCR color conversion uses the BT.709 color space. */
- vsc_sdp.db[16] |= 0x1; /* 0x1, ITU-R BT.709 */
+ /* DP 1.4a spec, Table 2-120 */
+ switch (crtc_state->output_format) {
+ case INTEL_OUTPUT_FORMAT_YCBCR444:
+ vsc_sdp.db[16] = 0x1 << 4; /* YCbCr 444 : DB16[7:4] = 1h */
+ break;
+ case INTEL_OUTPUT_FORMAT_YCBCR420:
+ vsc_sdp.db[16] = 0x3 << 4; /* YCbCr 420 : DB16[7:4] = 3h */
+ break;
+ case INTEL_OUTPUT_FORMAT_RGB:
+ default:
+ /* RGB: DB16[7:4] = 0h */
+ break;
+ }
+
+ switch (conn_state->colorspace) {
+ case DRM_MODE_COLORIMETRY_BT709_YCC:
+ vsc_sdp.db[16] |= 0x1;
+ break;
+ case DRM_MODE_COLORIMETRY_XVYCC_601:
+ vsc_sdp.db[16] |= 0x2;
+ break;
+ case DRM_MODE_COLORIMETRY_XVYCC_709:
+ vsc_sdp.db[16] |= 0x3;
+ break;
+ case DRM_MODE_COLORIMETRY_SYCC_601:
+ vsc_sdp.db[16] |= 0x4;
+ break;
+ case DRM_MODE_COLORIMETRY_OPYCC_601:
+ vsc_sdp.db[16] |= 0x5;
+ break;
+ case DRM_MODE_COLORIMETRY_BT2020_CYCC:
+ case DRM_MODE_COLORIMETRY_BT2020_RGB:
+ vsc_sdp.db[16] |= 0x6;
+ break;
+ case DRM_MODE_COLORIMETRY_BT2020_YCC:
+ vsc_sdp.db[16] |= 0x7;
+ break;
+ case DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65:
+ case DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER:
+ vsc_sdp.db[16] |= 0x4; /* DCI-P3 (SMPTE RP 431-2) */
+ break;
+ default:
+ /* sRGB (IEC 61966-2-1) / ITU-R BT.601: DB16[0:3] = 0h */
+
+ /* RGB->YCBCR color conversion uses the BT.709 color space. */
+ if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
+ vsc_sdp.db[16] |= 0x1; /* 0x1, ITU-R BT.709 */
+ break;
+ }
/*
* For pixel encoding formats YCbCr444, YCbCr422, YCbCr420, and Y Only,
@@ -4489,13 +4532,14 @@ intel_pixel_encoding_setup_vsc(struct intel_dp *intel_dp,
crtc_state, DP_SDP_VSC, &vsc_sdp, sizeof(vsc_sdp));
}
-void intel_dp_ycbcr_420_enable(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
+void intel_dp_vsc_enable(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
{
if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_YCBCR420)
return;
- intel_pixel_encoding_setup_vsc(intel_dp, crtc_state);
+ intel_dp_setup_vsc_sdp(intel_dp, crtc_state, conn_state);
}
static u8 intel_dp_autotest_link_training(struct intel_dp *intel_dp)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 657bbb1f5ed0..91a0ee6058fe 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -111,6 +111,9 @@ 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);
+void intel_dp_vsc_enable(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state);
bool intel_digital_port_connected(struct intel_encoder *encoder);
static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
--
2.22.0
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