Add the necessary structures and functions to handle reading and
unpacking Adaptive Sync Secondary Data Packets. Also add support
to write and pack AS SDP.
--v2:
- Correct use of REG_BIT and REG_GENMASK. [Jani]
- Use as_sdp instead of async. [Jani]
- Remove unrelated comments and changes. [Jani]
- Correct code indent. [Jani]
--v3:
- Update definition names for AS SDP which are starting from
HSW, as these defines are applicable for ADLP+.(Ankit)
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp.c | 95 ++++++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 12 ++-
drivers/gpu/drm/i915/i915_reg.h | 8 ++
include/drm/display/drm_dp.h | 2 +-
include/drm/display/drm_dp_helper.h | 2 +
5 files changed, 114 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 217196196e50..d68fb9d45054 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -95,7 +95,6 @@
#define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
#define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
-
/* Constants for DP DSC configurations */
static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15};
@@ -4089,6 +4088,34 @@ intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state,
return false;
}
+static ssize_t intel_dp_as_sdp_pack(const struct drm_dp_as_sdp *as_sdp,
+ struct dp_sdp *sdp, size_t size)
+{
+ size_t length = sizeof(struct dp_sdp);
+
+ if (size < length)
+ return -ENOSPC;
+
+ memset(sdp, 0, size);
+
+ /* Prepare AS (Adaptive Sync) SDP Header */
+ sdp->sdp_header.HB0 = 0;
+ sdp->sdp_header.HB1 = as_sdp->sdp_type;
+ sdp->sdp_header.HB2 = 0x02;
+ sdp->sdp_header.HB3 = as_sdp->length;
+
+ /* Fill AS (Adaptive Sync) SDP Payload */
+ sdp->db[1] = 0x0;
+ sdp->db[1] = as_sdp->vtotal & 0xFF;
+ sdp->db[2] = (as_sdp->vtotal >> 8) & 0xF;
+ sdp->db[3] = 0x0;
+ sdp->db[4] = 0x0;
+ sdp->db[7] = 0x0;
+ sdp->db[8] = 0x0;
+
+ return length;
+}
+
static ssize_t intel_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc,
struct dp_sdp *sdp, size_t size)
{
@@ -4256,6 +4283,10 @@ static void intel_write_dp_sdp(struct intel_encoder *encoder,
&crtc_state->infoframes.drm.drm,
&sdp, sizeof(sdp));
break;
+ case DP_SDP_ADAPTIVE_SYNC:
+ len = intel_dp_as_sdp_pack(&crtc_state->infoframes.as_sdp, &sdp,
+ sizeof(sdp));
+ break;
default:
MISSING_CASE(type);
return;
@@ -4276,7 +4307,8 @@ void intel_dp_set_infoframes(struct intel_encoder *encoder,
i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder);
u32 dip_enable = 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_DRM_GLK;
+ VIDEO_DIP_ENABLE_SPD_HSW | VIDEO_DIP_ENABLE_DRM_GLK |
+ VIDEO_DIP_ENABLE_ADAPTIVE_SYNC;
u32 val = intel_de_read(dev_priv, reg) & ~dip_enable;
/* TODO: Sanitize DSC enabling wrt. intel_dsc_dp_pps_write(). */
@@ -4298,6 +4330,40 @@ void intel_dp_set_infoframes(struct intel_encoder *encoder,
intel_write_dp_sdp(encoder, crtc_state, HDMI_PACKET_TYPE_GAMUT_METADATA);
}
+static
+int intel_dp_as_sdp_unpack(struct drm_dp_as_sdp *as_sdp,
+ const void *buffer, size_t size)
+{
+ const struct dp_sdp *sdp = buffer;
+
+ if (size < sizeof(struct dp_sdp))
+ return -EINVAL;
+
+ memset(as_sdp, 0, sizeof(*as_sdp));
+
+ if (sdp->sdp_header.HB0 != 0)
+ return -EINVAL;
+
+ if (sdp->sdp_header.HB1 != DP_SDP_ADAPTIVE_SYNC)
+ return -EINVAL;
+
+ if (sdp->sdp_header.HB2 != 0x02)
+ return -EINVAL;
+
+ if ((sdp->sdp_header.HB3 & 0x3F) != 9)
+ return -EINVAL;
+
+ if ((sdp->db[0] & AS_SDP_OP_MODE) != 0x0)
+ return -EINVAL;
+
+ as_sdp->vtotal = ((u64)sdp->db[2] << 32) | (u64)sdp->db[1];
+ as_sdp->target_rr = 0;
+ as_sdp->duration_incr_ms = 0;
+ as_sdp->duration_decr_ms = 0;
+
+ return 0;
+}
+
static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc,
const void *buffer, size_t size)
{
@@ -4368,6 +4434,27 @@ static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc,
return 0;
}
+static int
+intel_read_dp_metadata_infoframe_as_sdp(struct intel_encoder *encoder,
+ struct intel_crtc_state *crtc_state,
+ struct drm_dp_as_sdp *as_sdp)
+{
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ unsigned int type = DP_SDP_ADAPTIVE_SYNC;
+ struct dp_sdp sdp = {};
+ int ret;
+
+ dig_port->read_infoframe(encoder, crtc_state, type, &sdp,
+ sizeof(sdp));
+
+ ret = intel_dp_as_sdp_unpack(as_sdp, &sdp, sizeof(sdp));
+ if (ret)
+ drm_dbg_kms(&dev_priv->drm, "Failed to unpack DP AS SDP\n");
+
+ return ret;
+}
+
static int
intel_dp_hdr_metadata_infoframe_sdp_unpack(struct hdmi_drm_infoframe *drm_infoframe,
const void *buffer, size_t size)
@@ -4474,6 +4561,10 @@ void intel_read_dp_sdp(struct intel_encoder *encoder,
intel_read_dp_hdr_metadata_infoframe_sdp(encoder, crtc_state,
&crtc_state->infoframes.drm.drm);
break;
+ case DP_SDP_ADAPTIVE_SYNC:
+ intel_read_dp_metadata_infoframe_as_sdp(encoder, crtc_state,
+ &crtc_state->infoframes.as_sdp);
+ break;
default:
MISSING_CASE(type);
break;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 7020e5806109..69e0876f43aa 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -137,6 +137,8 @@ static u32 hsw_infoframe_enable(unsigned int type)
return VIDEO_DIP_ENABLE_GMP_HSW;
case DP_SDP_VSC:
return VIDEO_DIP_ENABLE_VSC_HSW;
+ case DP_SDP_ADAPTIVE_SYNC:
+ return VIDEO_DIP_ENABLE_ADAPTIVE_SYNC;
case DP_SDP_PPS:
return VDIP_ENABLE_PPS;
case HDMI_INFOFRAME_TYPE_AVI:
@@ -164,6 +166,8 @@ hsw_dip_data_reg(struct drm_i915_private *dev_priv,
return HSW_TVIDEO_DIP_GMP_DATA(cpu_transcoder, i);
case DP_SDP_VSC:
return HSW_TVIDEO_DIP_VSC_DATA(cpu_transcoder, i);
+ case DP_SDP_ADAPTIVE_SYNC:
+ return TVIDEO_DIP_AS_SDP_DATA(cpu_transcoder, i);
case DP_SDP_PPS:
return ICL_VIDEO_DIP_PPS_DATA(cpu_transcoder, i);
case HDMI_INFOFRAME_TYPE_AVI:
@@ -186,6 +190,8 @@ static int hsw_dip_data_size(struct drm_i915_private *dev_priv,
switch (type) {
case DP_SDP_VSC:
return VIDEO_DIP_VSC_DATA_SIZE;
+ case DP_SDP_ADAPTIVE_SYNC:
+ return VIDEO_DIP_ASYNC_DATA_SIZE;
case DP_SDP_PPS:
return VIDEO_DIP_PPS_DATA_SIZE;
case HDMI_PACKET_TYPE_GAMUT_METADATA:
@@ -558,7 +564,8 @@ static u32 hsw_infoframes_enabled(struct intel_encoder *encoder,
mask = (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_ADAPTIVE_SYNC);
if (DISPLAY_VER(dev_priv) >= 10)
mask |= VIDEO_DIP_ENABLE_DRM_GLK;
@@ -570,6 +577,7 @@ static const u8 infoframe_type_to_idx[] = {
HDMI_PACKET_TYPE_GENERAL_CONTROL,
HDMI_PACKET_TYPE_GAMUT_METADATA,
DP_SDP_VSC,
+ DP_SDP_ADAPTIVE_SYNC,
HDMI_INFOFRAME_TYPE_AVI,
HDMI_INFOFRAME_TYPE_SPD,
HDMI_INFOFRAME_TYPE_VENDOR,
@@ -1212,7 +1220,7 @@ 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_DRM_GLK);
+ VIDEO_DIP_ENABLE_DRM_GLK | VIDEO_DIP_ENABLE_ADAPTIVE_SYNC);
if (!enable) {
intel_de_write(dev_priv, reg, val);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e00557e1a57f..c02ea07af4c2 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2312,6 +2312,7 @@
* (Haswell and newer) to see which VIDEO_DIP_DATA byte corresponds to each byte
* of the infoframe structure specified by CEA-861. */
#define VIDEO_DIP_DATA_SIZE 32
+#define VIDEO_DIP_ASYNC_DATA_SIZE 36
#define VIDEO_DIP_GMP_DATA_SIZE 36
#define VIDEO_DIP_VSC_DATA_SIZE 36
#define VIDEO_DIP_PPS_DATA_SIZE 132
@@ -2350,6 +2351,8 @@
#define VIDEO_DIP_ENABLE_VS_HSW (1 << 8)
#define VIDEO_DIP_ENABLE_GMP_HSW (1 << 4)
#define VIDEO_DIP_ENABLE_SPD_HSW (1 << 0)
+/* ADL and later: */
+#define VIDEO_DIP_ENABLE_ADAPTIVE_SYNC REG_BIT(23)
/* Panel fitting */
#define PFIT_CONTROL _MMIO(DISPLAY_MMIO_BASE(dev_priv) + 0x61230)
@@ -5040,6 +5043,7 @@
#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 _VIDEO_DIP_AS_SDP_DATA_A 0x60484
#define _GLK_VIDEO_DIP_DRM_DATA_A 0x60440
#define _HSW_VIDEO_DIP_AVI_ECC_A 0x60240
#define _HSW_VIDEO_DIP_VS_ECC_A 0x60280
@@ -5054,6 +5058,7 @@
#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 _VIDEO_DIP_AS_SDP_DATA_B 0x61484
#define _GLK_VIDEO_DIP_DRM_DATA_B 0x61440
#define _HSW_VIDEO_DIP_BVI_ECC_B 0x61240
#define _HSW_VIDEO_DIP_VS_ECC_B 0x61280
@@ -5083,6 +5088,9 @@
#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)
+/*ADLP and later: */
+#define TVIDEO_DIP_AS_SDP_DATA(trans, i) _MMIO_TRANS2(trans,\
+ _VIDEO_DIP_AS_SDP_DATA_A + (i) * 4)
#define _HSW_STEREO_3D_CTL_A 0x70020
#define S3D_ENABLE (1 << 31)
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
index af6790fb4791..6f4a3e95906c 100644
--- a/include/drm/display/drm_dp.h
+++ b/include/drm/display/drm_dp.h
@@ -1578,7 +1578,7 @@ enum drm_dp_phy {
#define DP_SDP_AUDIO_COPYMANAGEMENT 0x05 /* DP 1.2 */
#define DP_SDP_ISRC 0x06 /* DP 1.2 */
#define DP_SDP_VSC 0x07 /* DP 1.2 */
-#define DP_SDP_ADAPTIVE_SYNC 0x22 /* DP 1.4 */
+#define DP_SDP_ADAPTIVE_SYNC 0x22 /* DP 1.4 */
#define DP_SDP_CAMERA_GENERIC(i) (0x08 + (i)) /* 0-7, DP 1.3 */
#define DP_SDP_PPS 0x10 /* DP 1.4 */
#define DP_SDP_VSC_EXT_VESA 0x20 /* DP 1.4 */
diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h
index 8a692a86d8d6..a4e0b18bba3a 100644
--- a/include/drm/display/drm_dp_helper.h
+++ b/include/drm/display/drm_dp_helper.h
@@ -839,6 +839,8 @@ int drm_dp_pcon_convert_rgb_to_ycbcr(struct drm_dp_aux *aux, u8 color_spc);
#define DRM_DP_BW_OVERHEAD_FEC BIT(3)
#define DRM_DP_BW_OVERHEAD_DSC BIT(4)
+#define AS_SDP_OP_MODE GENMASK(1, 0)
+
int drm_dp_bw_overhead(int lane_count, int hactive,
int dsc_slice_count,
int bpp_x16, unsigned long flags);
--
2.25.1
