[Intel-gfx] [v4 11/12] drm/i915: Enable infoframes on GLK+ for HDR

[Uma Shankar]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

This patch enables infoframes on GLK+ to be
used to send HDR metadata to HDMI sink.

v2: Addressed Shashank's review comment.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar at intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h   |  4 ++++
 drivers/gpu/drm/i915/intel_hdmi.c | 13 ++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 44958d9..ffeb5c0 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4615,6 +4615,7 @@ enum {
 #define   VIDEO_DIP_FREQ_MASK		(3 << 16)
 /* HSW and later: */
 #define   DRM_DIP_ENABLE		(1 << 28)
+#define   VIDEO_DIP_ENABLE_DRM_GLK	(1 << 28)
 #define   PSR_VSC_BIT_7_SET		(1 << 27)
 #define   VSC_SELECT_MASK		(0x3 << 25)
 #define   VSC_SELECT_SHIFT		25
@@ -8039,6 +8040,7 @@ enum {
 #define _HSW_VIDEO_DIP_SPD_DATA_A	0x602A0
 #define _HSW_VIDEO_DIP_GMP_DATA_A	0x602E0
 #define _HSW_VIDEO_DIP_VSC_DATA_A	0x60320
+#define _GLK_VIDEO_DIP_DRM_DATA_A	0x60440
 #define _HSW_VIDEO_DIP_AVI_ECC_A	0x60240
 #define _HSW_VIDEO_DIP_VS_ECC_A		0x60280
 #define _HSW_VIDEO_DIP_SPD_ECC_A	0x602C0
@@ -8052,6 +8054,7 @@ enum {
 #define _HSW_VIDEO_DIP_SPD_DATA_B	0x612A0
 #define _HSW_VIDEO_DIP_GMP_DATA_B	0x612E0
 #define _HSW_VIDEO_DIP_VSC_DATA_B	0x61320
+#define _GLK_VIDEO_DIP_DRM_DATA_B	0x61440
 #define _HSW_VIDEO_DIP_BVI_ECC_B	0x61240
 #define _HSW_VIDEO_DIP_VS_ECC_B		0x61280
 #define _HSW_VIDEO_DIP_SPD_ECC_B	0x612C0
@@ -8076,6 +8079,7 @@ enum {
 #define HSW_TVIDEO_DIP_SPD_DATA(trans, i)	_MMIO_TRANS2(trans, _HSW_VIDEO_DIP_SPD_DATA_A + (i) * 4)
 #define HSW_TVIDEO_DIP_GCP(trans)		_MMIO_TRANS2(trans, _HSW_VIDEO_DIP_GCP_A)
 #define HSW_TVIDEO_DIP_VSC_DATA(trans, i)	_MMIO_TRANS2(trans, _HSW_VIDEO_DIP_VSC_DATA_A + (i) * 4)
+#define GLK_TVIDEO_DIP_DRM_DATA(trans, i)	_MMIO_TRANS2(trans, _GLK_VIDEO_DIP_DRM_DATA_A + (i) * 4)
 #define ICL_VIDEO_DIP_PPS_DATA(trans, i)	_MMIO_TRANS2(trans, _ICL_VIDEO_DIP_PPS_DATA_A + (i) * 4)
 #define ICL_VIDEO_DIP_PPS_ECC(trans, i)		_MMIO_TRANS2(trans, _ICL_VIDEO_DIP_PPS_ECC_A + (i) * 4)
 
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 8f2be2b..c4657f5 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -123,6 +123,8 @@ static u32 hsw_infoframe_enable(unsigned int type)
 		return VIDEO_DIP_ENABLE_SPD_HSW;
 	case HDMI_INFOFRAME_TYPE_VENDOR:
 		return VIDEO_DIP_ENABLE_VS_HSW;
+	case HDMI_INFOFRAME_TYPE_DRM:
+		return VIDEO_DIP_ENABLE_DRM_GLK;
 	default:
 		MISSING_CASE(type);
 		return 0;
@@ -146,6 +148,8 @@ static u32 hsw_infoframe_enable(unsigned int type)
 		return HSW_TVIDEO_DIP_SPD_DATA(cpu_transcoder, i);
 	case HDMI_INFOFRAME_TYPE_VENDOR:
 		return HSW_TVIDEO_DIP_VS_DATA(cpu_transcoder, i);
+	case HDMI_INFOFRAME_TYPE_DRM:
+		return GLK_TVIDEO_DIP_DRM_DATA(cpu_transcoder, i);
 	default:
 		MISSING_CASE(type);
 		return INVALID_MMIO_REG;
@@ -432,7 +436,8 @@ static bool hsw_infoframe_enabled(struct intel_encoder *encoder,
 
 	return val & (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 		      VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
-		      VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
+		      VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW |
+		      VIDEO_DIP_ENABLE_DRM_GLK);
 }
 
 /*
@@ -890,7 +895,8 @@ static void hsw_set_infoframes(struct intel_encoder *encoder,
 
 	val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW |
 		 VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW |
-		 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW);
+		 VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW |
+		 VIDEO_DIP_ENABLE_DRM_GLK);
 
 	if (!enable) {
 		I915_WRITE(reg, val);
@@ -909,7 +915,8 @@ static void hsw_set_infoframes(struct intel_encoder *encoder,
 	intel_hdmi_set_hdmi_infoframe(encoder, crtc_state, conn_state);
 
 	/* Set Dynamic Range and Mastering Infoframe if supported and changed */
-	if (conn_state->hdr_metadata_changed)
+	if ((INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) &&
+		conn_state->hdr_metadata_changed)
 		intel_hdmi_set_drm_infoframe(encoder, crtc_state, conn_state);
 }
 
-- 
1.9.1