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From: Uma Shankar <uma.shankar@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: ville.syrjala@intel.com, maarten.lankhorst@intel.com
Subject: [v6 5/6] drm/i915/icl: Enable pipe output csc
Date: Wed, 16 Jan 2019 21:51:36 +0530	[thread overview]
Message-ID: <1547655697-4092-6-git-send-email-uma.shankar@intel.com> (raw)
In-Reply-To: <1547655697-4092-1-git-send-email-uma.shankar@intel.com>

GEN11+ onwards an output csc hardware block has been added.
This is after the pipe gamma block and is in addition to the
legacy pipe CSC block. Primary use case for this block is to
convert RGB to YUV in case sink supports YUV.
This patch adds supports for the same.

v2: This is added after splitting the existing ICL pipe CSC
handling. As per Matt's suggestion, made this to co-exist
with existing pipe CSC, wherein both can be enabled if a
certain usecase arises.

Signed-off-by: Uma Shankar <uma.shankar@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h    | 41 +++++++++++++++++++++
 drivers/gpu/drm/i915/intel_color.c | 75 ++++++++++++++++++++++++++++----------
 drivers/gpu/drm/i915/intel_drv.h   |  3 ++
 3 files changed, 99 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3c3a902..edd6b4d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9864,6 +9864,7 @@ enum skl_power_gate {
 
 #define _PIPE_A_CSC_MODE	0x49028
 #define  ICL_CSC_ENABLE			(1 << 31)
+#define  ICL_OUTPUT_CSC_ENABLE		(1 << 30)
 #define  CSC_BLACK_SCREEN_OFFSET	(1 << 2)
 #define  CSC_POSITION_BEFORE_GAMMA	(1 << 1)
 #define  CSC_MODE_YUV_TO_RGB		(1 << 0)
@@ -9903,6 +9904,46 @@ enum skl_power_gate {
 #define PIPE_CSC_POSTOFF_ME(pipe)	_MMIO_PIPE(pipe, _PIPE_A_CSC_POSTOFF_ME, _PIPE_B_CSC_POSTOFF_ME)
 #define PIPE_CSC_POSTOFF_LO(pipe)	_MMIO_PIPE(pipe, _PIPE_A_CSC_POSTOFF_LO, _PIPE_B_CSC_POSTOFF_LO)
 
+/* Pipe Output CSC */
+#define _PIPE_A_OUTPUT_CSC_COEFF_RY_GY	0x49050
+#define _PIPE_A_OUTPUT_CSC_COEFF_BY	0x49054
+#define _PIPE_A_OUTPUT_CSC_COEFF_RU_GU	0x49058
+#define _PIPE_A_OUTPUT_CSC_COEFF_BU	0x4905c
+#define _PIPE_A_OUTPUT_CSC_COEFF_RV_GV	0x49060
+#define _PIPE_A_OUTPUT_CSC_COEFF_BV	0x49064
+#define _PIPE_A_OUTPUT_CSC_PREOFF_HI	0x49068
+#define _PIPE_A_OUTPUT_CSC_PREOFF_ME	0x4906c
+#define _PIPE_A_OUTPUT_CSC_PREOFF_LO	0x49070
+#define _PIPE_A_OUTPUT_CSC_POSTOFF_HI	0x49074
+#define _PIPE_A_OUTPUT_CSC_POSTOFF_ME	0x49078
+#define _PIPE_A_OUTPUT_CSC_POSTOFF_LO	0x4907c
+
+#define _PIPE_B_OUTPUT_CSC_COEFF_RY_GY	0x49150
+#define _PIPE_B_OUTPUT_CSC_COEFF_BY	0x49154
+#define _PIPE_B_OUTPUT_CSC_COEFF_RU_GU	0x49158
+#define _PIPE_B_OUTPUT_CSC_COEFF_BU	0x4915c
+#define _PIPE_B_OUTPUT_CSC_COEFF_RV_GV	0x49160
+#define _PIPE_B_OUTPUT_CSC_COEFF_BV	0x49164
+#define _PIPE_B_OUTPUT_CSC_PREOFF_HI	0x49168
+#define _PIPE_B_OUTPUT_CSC_PREOFF_ME	0x4916c
+#define _PIPE_B_OUTPUT_CSC_PREOFF_LO	0x49170
+#define _PIPE_B_OUTPUT_CSC_POSTOFF_HI	0x49174
+#define _PIPE_B_OUTPUT_CSC_POSTOFF_ME	0x49178
+#define _PIPE_B_OUTPUT_CSC_POSTOFF_LO	0x4917c
+
+#define PIPE_CSC_OUTPUT_COEFF_RY_GY(pipe)	_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_COEFF_RY_GY, _PIPE_B_OUTPUT_CSC_COEFF_RY_GY)
+#define PIPE_CSC_OUTPUT_COEFF_BY(pipe)		_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_COEFF_BY, _PIPE_B_OUTPUT_CSC_COEFF_BY)
+#define PIPE_CSC_OUTPUT_COEFF_RU_GU(pipe)	_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_COEFF_RU_GU, _PIPE_B_OUTPUT_CSC_COEFF_RU_GU)
+#define PIPE_CSC_OUTPUT_COEFF_BU(pipe)		_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_COEFF_BU, _PIPE_B_OUTPUT_CSC_COEFF_BU)
+#define PIPE_CSC_OUTPUT_COEFF_RV_GV(pipe)	_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_COEFF_RV_GV, _PIPE_B_OUTPUT_CSC_COEFF_RV_GV)
+#define PIPE_CSC_OUTPUT_COEFF_BV(pipe)		_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_COEFF_BV, _PIPE_B_OUTPUT_CSC_COEFF_BV)
+#define PIPE_CSC_OUTPUT_PREOFF_HI(pipe)		_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_PREOFF_HI, _PIPE_B_OUTPUT_CSC_PREOFF_HI)
+#define PIPE_CSC_OUTPUT_PREOFF_ME(pipe)		_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_PREOFF_ME, _PIPE_B_OUTPUT_CSC_PREOFF_ME)
+#define PIPE_CSC_OUTPUT_PREOFF_LO(pipe)		_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_PREOFF_LO, _PIPE_B_OUTPUT_CSC_PREOFF_LO)
+#define PIPE_CSC_OUTPUT_POSTOFF_HI(pipe)	_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_POSTOFF_HI, _PIPE_B_OUTPUT_CSC_POSTOFF_HI)
+#define PIPE_CSC_OUTPUT_POSTOFF_ME(pipe)	_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_POSTOFF_ME, _PIPE_B_OUTPUT_CSC_POSTOFF_ME)
+#define PIPE_CSC_OUTPUT_POSTOFF_LO(pipe)	_MMIO_PIPE(pipe, _PIPE_A_OUTPUT_CSC_POSTOFF_LO, _PIPE_B_OUTPUT_CSC_POSTOFF_LO)
+
 /* pipe degamma/gamma LUTs on IVB+ */
 #define _PAL_PREC_INDEX_A	0x4A400
 #define _PAL_PREC_INDEX_B	0x4AC00
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 9b8d2de..c95adb9 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -113,29 +113,58 @@ static u64 *ctm_mult_by_limited(u64 *result, const u64 *input)
 	return result;
 }
 
-static void ilk_load_ycbcr_conversion_matrix(struct intel_crtc *crtc)
+static void ilk_load_ycbcr_conversion_matrix(struct intel_crtc_state
+					     *crtc_state)
 {
-	int pipe = crtc->pipe;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int pipe = crtc->pipe;
 
-	I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
-	I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
-	I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
+	if (INTEL_GEN(dev_priv) < 11) {
+		I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
+		I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
+		I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
 
-	I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), CSC_RGB_TO_YUV_RU_GU);
-	I915_WRITE(PIPE_CSC_COEFF_BU(pipe), CSC_RGB_TO_YUV_BU);
+		I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), CSC_RGB_TO_YUV_RU_GU);
+		I915_WRITE(PIPE_CSC_COEFF_BU(pipe), CSC_RGB_TO_YUV_BU);
 
-	I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), CSC_RGB_TO_YUV_RY_GY);
-	I915_WRITE(PIPE_CSC_COEFF_BY(pipe), CSC_RGB_TO_YUV_BY);
+		I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), CSC_RGB_TO_YUV_RY_GY);
+		I915_WRITE(PIPE_CSC_COEFF_BY(pipe), CSC_RGB_TO_YUV_BY);
 
-	I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), CSC_RGB_TO_YUV_RV_GV);
-	I915_WRITE(PIPE_CSC_COEFF_BV(pipe), CSC_RGB_TO_YUV_BV);
+		I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), CSC_RGB_TO_YUV_RV_GV);
+		I915_WRITE(PIPE_CSC_COEFF_BV(pipe), CSC_RGB_TO_YUV_BV);
 
-	I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), POSTOFF_RGB_TO_YUV_HI);
-	I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), POSTOFF_RGB_TO_YUV_ME);
-	I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), POSTOFF_RGB_TO_YUV_LO);
+		I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), POSTOFF_RGB_TO_YUV_HI);
+		I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), POSTOFF_RGB_TO_YUV_ME);
+		I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), POSTOFF_RGB_TO_YUV_LO);
 
-	I915_WRITE(PIPE_CSC_MODE(pipe), 0);
+		crtc_state->csc_mode = 0;
+	} else {
+		I915_WRITE(PIPE_CSC_OUTPUT_PREOFF_HI(pipe), 0);
+		I915_WRITE(PIPE_CSC_OUTPUT_PREOFF_ME(pipe), 0);
+		I915_WRITE(PIPE_CSC_OUTPUT_PREOFF_LO(pipe), 0);
+
+		I915_WRITE(PIPE_CSC_OUTPUT_COEFF_RU_GU(pipe),
+			   CSC_RGB_TO_YUV_RU_GU);
+		I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BU(pipe), CSC_RGB_TO_YUV_BU);
+
+		I915_WRITE(PIPE_CSC_OUTPUT_COEFF_RY_GY(pipe),
+			   CSC_RGB_TO_YUV_RY_GY);
+		I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BY(pipe), CSC_RGB_TO_YUV_BY);
+
+		I915_WRITE(PIPE_CSC_OUTPUT_COEFF_RV_GV(pipe),
+			   CSC_RGB_TO_YUV_RV_GV);
+		I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BV(pipe), CSC_RGB_TO_YUV_BV);
+
+		I915_WRITE(PIPE_CSC_OUTPUT_POSTOFF_HI(pipe),
+			   POSTOFF_RGB_TO_YUV_HI);
+		I915_WRITE(PIPE_CSC_OUTPUT_POSTOFF_ME(pipe),
+			   POSTOFF_RGB_TO_YUV_ME);
+		I915_WRITE(PIPE_CSC_OUTPUT_POSTOFF_LO(pipe),
+			   POSTOFF_RGB_TO_YUV_LO);
+
+		crtc_state->csc_mode = ICL_OUTPUT_CSC_ENABLE;
+	}
 }
 
 static void ilk_load_csc_matrix(struct intel_crtc_state *crtc_state)
@@ -153,10 +182,14 @@ static void ilk_load_csc_matrix(struct intel_crtc_state *crtc_state)
 	if (INTEL_GEN(dev_priv) >= 8 || IS_HASWELL(dev_priv))
 		limited_color_range = crtc_state->limited_color_range;
 
+	crtc_state->csc_mode = 0;
 	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
 	    crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) {
-		ilk_load_ycbcr_conversion_matrix(crtc);
-		return;
+		ilk_load_ycbcr_conversion_matrix(crtc_state);
+		if (INTEL_GEN(dev_priv) < 11) {
+			I915_WRITE(PIPE_CSC_MODE(pipe), crtc_state->csc_mode);
+			return;
+		}
 	} else if (crtc_state->base.ctm) {
 		struct drm_color_ctm *ctm = crtc_state->base.ctm->data;
 		const u64 *input;
@@ -243,10 +276,12 @@ static void ilk_load_csc_matrix(struct intel_crtc_state *crtc_state)
 		I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
 		I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
 
-		if (INTEL_GEN(dev_priv) >= 11)
-			I915_WRITE(PIPE_CSC_MODE(pipe), ICL_CSC_ENABLE);
-		else
+		if (INTEL_GEN(dev_priv) >= 11) {
+			crtc_state->csc_mode |= ICL_CSC_ENABLE;
+			I915_WRITE(PIPE_CSC_MODE(pipe), crtc_state->csc_mode);
+		} else {
 			I915_WRITE(PIPE_CSC_MODE(pipe), 0);
+		}
 	} else {
 		uint32_t mode = CSC_MODE_YUV_TO_RGB;
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index e5a436c..320a413 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -930,6 +930,9 @@ struct intel_crtc_state {
 	/* Gamma mode programmed on the pipe */
 	uint32_t gamma_mode;
 
+	/* CSC mode programmed on the pipe */
+	uint32_t csc_mode;
+
 	/* bitmask of visible planes (enum plane_id) */
 	u8 active_planes;
 	u8 nv12_planes;
-- 
1.9.1

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  parent reply	other threads:[~2019-01-16 15:58 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-16 16:21 [v6 0/6] Add support for Gen 11 pipe color features Uma Shankar
2019-01-16 16:21 ` [v6 1/6] drm/i915: Sanitize crtc gamma and csc mode Uma Shankar
2019-01-16 16:21 ` [v6 2/6] drm/i915/glk: Fix degamma lut programming Uma Shankar
2019-01-28 21:34   ` Matt Roper
2019-01-16 16:21 ` [v6 3/6] drm/i915/icl: Add icl pipe degamma and gamma support Uma Shankar
2019-01-28 22:19   ` Matt Roper
2019-01-29 15:36     ` Shankar, Uma
2019-01-16 16:21 ` [v6 4/6] drm/i915/icl: Enable ICL Pipe CSC block Uma Shankar
2019-01-28 22:19   ` Matt Roper
2019-01-29 15:38     ` Shankar, Uma
2019-01-16 16:21 ` Uma Shankar [this message]
2019-01-28 22:19   ` [v6 5/6] drm/i915/icl: Enable pipe output csc Matt Roper
2019-01-29 15:52     ` Shankar, Uma
2019-01-16 16:21 ` [v6 6/6] drm/i915/icl: Add degamma and gamma lut size to gen11 caps Uma Shankar
2019-01-17  8:55 ` ✗ Fi.CI.CHECKPATCH: warning for Add support for Gen 11 pipe color features (rev6) Patchwork
2019-01-17  9:39 ` ✓ Fi.CI.BAT: success " Patchwork
2019-01-17 13:31 ` ✓ Fi.CI.IGT: " Patchwork
2019-01-25 12:35 ` [v6 0/6] Add support for Gen 11 pipe color features Shankar, Uma

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