Merge tag 'drm-intel-next-2021-10-04' of git://anongit.freedesktop.or…

…g/drm/drm-intel into drm-next

Cross-subsystem Changes:
- fbdev/efifb: Release PCI device's runtime PM ref during FB destr\
oy (Imre)

i915 Core Driver Changes:
- Only access SFC_DONE in media when not fused off for graphics 12 and newer.
- Double Memory latency values from pcode for DG2 (Matt Roper)
- ADL-S PCI ID update (Tejas)
- New DG1 PCI ID (Jose)
- Fix regression with uncore refactoring (Dave)

i915 Display Changes:
- ADL-P display (XE_LPD) fixes and updates (Ankit, Jani, Matt Roper, Anusham, Jose, Imre, Vandita)
- DG2 display fixes (Ankit, Jani)
- Expand PCH_CNP tweaked display workaround to all newer displays (Anshuman)
- General display simplifications and clean-ups (Jani, Swati, Jose, Ville)
- PSR Clean-ups, dropping support for BDW/HSD and enable PSR2 selective fetch by default (Jose, Gwan-gyeong)
- Nuke ORIGIN_GTT (Jose)
- Return proper DPRX link training result (Lee)
- FBC related refactor and fixes (Ville)
- Yet another attempt to solve the fast+narrow vs slow+wide eDP link training (Kai-Heng)
- DP 2.0 preparation work (Jani)
- Silence __iomem sparse warn (Ville)
- Clean up DPLL stuff (Ville)
- Fix various dp/edp max rates (Matt Atwood, Animesh, Jani)
- Remove VBT ddi_port_info caching (Jani)
- DSI driver improvements (Lee)
- HDCP fixes (Juston)
- Associate ACPI connector nodes with connector entries (Heikki)
- Add support for out-of-bound hotplug events (Hans)
- VESA vendor block and drm/i915 MSO use of it (Jani)
- Fixes for bigjoiner (Ville)
- Update memory bandwidth parameters (RK)
- DMC related fixes (Chris, Jose)
- HDR related fixes and improvements (Tejas)
- g4x/vlv/chv CxSR/wm fixes/cleanups (Ville)
- Use BIOS provided value for RKL Audio's HDA link (Kai-Heng)
- Fix the dsc check while selecting min_cdclk (Vandita)
- Split and constify vtable (Dave)
- Add ww context to intel_dpt_pin (Maarten)
- Fix bdb version check (Lukasz)
- DP per-lane drive settings prep work and other DP fixes (Ville)

Signed-off-by: Dave Airlie <airlied@redhat.com>

# gpg: Signature made Tue 05 Oct 2021 04:58:16 AEST
# gpg:                using RSA key 6D207068EEDD65091C2CE2A3FA625F640EEB13CA
# gpg: Good signature from "Rodrigo Vivi <rodrigo.vivi@intel.com>" [unknown]
# gpg:                 aka "Rodrigo Vivi <rodrigo.vivi@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6D20 7068 EEDD 6509 1C2C  E2A3 FA62 5F64 0EEB 13CA
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YVtPk6llsxBFiw7W@intel.com

Documentation/gpu/i915.rst

@@ -183,26 +183,23 @@ Frame Buffer Compression (FBC)
 Display Refresh Rate Switching (DRRS)
 -------------------------------------
 
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_drrs.c
    :doc: Display Refresh Rate Switching (DRRS)
 
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
-   :functions: intel_dp_set_drrs_state
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_drrs.c
+   :functions: intel_drrs_enable
 
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
-   :functions: intel_edp_drrs_enable
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_drrs.c
+   :functions: intel_drrs_disable
 
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
-   :functions: intel_edp_drrs_disable
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_drrs.c
+   :functions: intel_drrs_invalidate
 
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
-   :functions: intel_edp_drrs_invalidate
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_drrs.c
+   :functions: intel_drrs_flush
 
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
-   :functions: intel_edp_drrs_flush
-
-.. kernel-doc:: drivers/gpu/drm/i915/display/intel_dp.c
-   :functions: intel_dp_drrs_init
+.. kernel-doc:: drivers/gpu/drm/i915/display/intel_drrs.c
+   :functions: intel_drrs_init
 
 DPIO
 ----

drivers/gpu/drm/drm_dp_helper.c

@@ -130,6 +130,20 @@ u8 drm_dp_get_adjust_request_pre_emphasis(const u8 link_status[DP_LINK_STATUS_SI
 }
 EXPORT_SYMBOL(drm_dp_get_adjust_request_pre_emphasis);
 
+/* DP 2.0 128b/132b */
+u8 drm_dp_get_adjust_tx_ffe_preset(const u8 link_status[DP_LINK_STATUS_SIZE],
+				   int lane)
+{
+	int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1);
+	int s = ((lane & 1) ?
+		 DP_ADJUST_TX_FFE_PRESET_LANE1_SHIFT :
+		 DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT);
+	u8 l = dp_link_status(link_status, i);
+
+	return (l >> s) & 0xf;
+}
+EXPORT_SYMBOL(drm_dp_get_adjust_tx_ffe_preset);
+
 u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE],
 					 unsigned int lane)
 {
@@ -207,15 +221,33 @@ EXPORT_SYMBOL(drm_dp_lttpr_link_train_channel_eq_delay);
 
 u8 drm_dp_link_rate_to_bw_code(int link_rate)
 {
-	/* Spec says link_bw = link_rate / 0.27Gbps */
-	return link_rate / 27000;
+	switch (link_rate) {
+	case 1000000:
+		return DP_LINK_BW_10;
+	case 1350000:
+		return DP_LINK_BW_13_5;
+	case 2000000:
+		return DP_LINK_BW_20;
+	default:
+		/* Spec says link_bw = link_rate / 0.27Gbps */
+		return link_rate / 27000;
+	}
 }
 EXPORT_SYMBOL(drm_dp_link_rate_to_bw_code);
 
 int drm_dp_bw_code_to_link_rate(u8 link_bw)
 {
-	/* Spec says link_rate = link_bw * 0.27Gbps */
-	return link_bw * 27000;
+	switch (link_bw) {
+	case DP_LINK_BW_10:
+		return 1000000;
+	case DP_LINK_BW_13_5:
+		return 1350000;
+	case DP_LINK_BW_20:
+		return 2000000;
+	default:
+		/* Spec says link_rate = link_bw * 0.27Gbps */
+		return link_bw * 27000;
+	}
 }
 EXPORT_SYMBOL(drm_dp_bw_code_to_link_rate);
 
@@ -590,7 +622,7 @@ static u8 drm_dp_downstream_port_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
 static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux,
 					  u8 dpcd[DP_RECEIVER_CAP_SIZE])
 {
-	u8 dpcd_ext[6];
+	u8 dpcd_ext[DP_RECEIVER_CAP_SIZE];
 	int ret;
 
 	/*

drivers/gpu/drm/drm_edid.c

@@ -28,6 +28,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/bitfield.h>
 #include <linux/hdmi.h>
 #include <linux/i2c.h>
 #include <linux/kernel.h>
@@ -49,6 +50,11 @@
 	(((edid)->version > (maj)) || \
 	 ((edid)->version == (maj) && (edid)->revision > (min)))
 
+static int oui(u8 first, u8 second, u8 third)
+{
+	return (first << 16) | (second << 8) | third;
+}
+
 #define EDID_EST_TIMINGS 16
 #define EDID_STD_TIMINGS 8
 #define EDID_DETAILED_TIMINGS 4
@@ -4187,32 +4193,24 @@ cea_db_offsets(const u8 *cea, int *start, int *end)
 
 static bool cea_db_is_hdmi_vsdb(const u8 *db)
 {
-	int hdmi_id;
-
 	if (cea_db_tag(db) != VENDOR_BLOCK)
 		return false;
 
 	if (cea_db_payload_len(db) < 5)
 		return false;
 
-	hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
-
-	return hdmi_id == HDMI_IEEE_OUI;
+	return oui(db[3], db[2], db[1]) == HDMI_IEEE_OUI;
 }
 
 static bool cea_db_is_hdmi_forum_vsdb(const u8 *db)
 {
-	unsigned int oui;
-
 	if (cea_db_tag(db) != VENDOR_BLOCK)
 		return false;
 
 	if (cea_db_payload_len(db) < 7)
 		return false;
 
-	oui = db[3] << 16 | db[2] << 8 | db[1];
-
-	return oui == HDMI_FORUM_IEEE_OUI;
+	return oui(db[3], db[2], db[1]) == HDMI_FORUM_IEEE_OUI;
 }
 
 static bool cea_db_is_vcdb(const u8 *db)
@@ -5222,6 +5220,71 @@ void drm_get_monitor_range(struct drm_connector *connector,
 		      info->monitor_range.max_vfreq);
 }
 
+static void drm_parse_vesa_mso_data(struct drm_connector *connector,
+				    const struct displayid_block *block)
+{
+	struct displayid_vesa_vendor_specific_block *vesa =
+		(struct displayid_vesa_vendor_specific_block *)block;
+	struct drm_display_info *info = &connector->display_info;
+
+	if (block->num_bytes < 3) {
+		drm_dbg_kms(connector->dev, "Unexpected vendor block size %u\n",
+			    block->num_bytes);
+		return;
+	}
+
+	if (oui(vesa->oui[0], vesa->oui[1], vesa->oui[2]) != VESA_IEEE_OUI)
+		return;
+
+	if (sizeof(*vesa) != sizeof(*block) + block->num_bytes) {
+		drm_dbg_kms(connector->dev, "Unexpected VESA vendor block size\n");
+		return;
+	}
+
+	switch (FIELD_GET(DISPLAYID_VESA_MSO_MODE, vesa->mso)) {
+	default:
+		drm_dbg_kms(connector->dev, "Reserved MSO mode value\n");
+		fallthrough;
+	case 0:
+		info->mso_stream_count = 0;
+		break;
+	case 1:
+		info->mso_stream_count = 2; /* 2 or 4 links */
+		break;
+	case 2:
+		info->mso_stream_count = 4; /* 4 links */
+		break;
+	}
+
+	if (!info->mso_stream_count) {
+		info->mso_pixel_overlap = 0;
+		return;
+	}
+
+	info->mso_pixel_overlap = FIELD_GET(DISPLAYID_VESA_MSO_OVERLAP, vesa->mso);
+	if (info->mso_pixel_overlap > 8) {
+		drm_dbg_kms(connector->dev, "Reserved MSO pixel overlap value %u\n",
+			    info->mso_pixel_overlap);
+		info->mso_pixel_overlap = 8;
+	}
+
+	drm_dbg_kms(connector->dev, "MSO stream count %u, pixel overlap %u\n",
+		    info->mso_stream_count, info->mso_pixel_overlap);
+}
+
+static void drm_update_mso(struct drm_connector *connector, const struct edid *edid)
+{
+	const struct displayid_block *block;
+	struct displayid_iter iter;
+
+	displayid_iter_edid_begin(edid, &iter);
+	displayid_iter_for_each(block, &iter) {
+		if (block->tag == DATA_BLOCK_2_VENDOR_SPECIFIC)
+			drm_parse_vesa_mso_data(connector, block);
+	}
+	displayid_iter_end(&iter);
+}
+
 /* A connector has no EDID information, so we've got no EDID to compute quirks from. Reset
  * all of the values which would have been set from EDID
  */
@@ -5245,6 +5308,9 @@ drm_reset_display_info(struct drm_connector *connector)
 
 	info->non_desktop = 0;
 	memset(&info->monitor_range, 0, sizeof(info->monitor_range));
+
+	info->mso_stream_count = 0;
+	info->mso_pixel_overlap = 0;
 }
 
 u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid)
@@ -5323,6 +5389,9 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
 		info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
 	if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422)
 		info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
+
+	drm_update_mso(connector, edid);
+
 	return quirks;
 }
 

drivers/gpu/drm/i915/Makefile

@@ -211,6 +211,8 @@ i915-y += \
 	display/intel_dpio_phy.o \
 	display/intel_dpll.o \
 	display/intel_dpll_mgr.o \
+	display/intel_dpt.o \
+	display/intel_drrs.o \
 	display/intel_dsb.o \
 	display/intel_fb.o \
 	display/intel_fbc.o \
@@ -247,6 +249,7 @@ i915-y += \
 	display/g4x_dp.o \
 	display/g4x_hdmi.o \
 	display/icl_dsi.o \
+	display/intel_backlight.o \
 	display/intel_crt.o \
 	display/intel_ddi.o \
 	display/intel_ddi_buf_trans.o \