From bb71fb0072f14611f6c5bb5a1a5bf8ac942fa1c3 Mon Sep 17 00:00:00 2001 From: Gwan-gyeong Mun Date: Thu, 19 Sep 2019 22:53:04 +0300 Subject: [PATCH] drm/i915/dp: Extend program of VSC Header and DB for Colorimetry Format MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Uma Shankar Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20190919195311.13972-2-gwan-gyeong.mun@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 6c1315c7bcde..079dae20deb5 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3851,7 +3851,7 @@ 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 bc2cf4bec0e8..bed203ec1df8 100644 --- a/drivers/gpu/drm/i915/display/intel_display.h +++ b/drivers/gpu/drm/i915/display/intel_display.h @@ -539,8 +539,6 @@ 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 6594f2af1257..7aa027881ff3 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4474,8 +4474,9 @@ intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) } 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 = {}; @@ -4496,13 +4497,55 @@ 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, @@ -4554,13 +4597,14 @@ 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 a194b5b6da05..ce2b87f51a30 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -108,6 +108,9 @@ 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) -- 2.11.0