Merge tag 'drm-next-2021-02-19' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "A pretty normal tree, lots of refactoring across the board, ttm, i915,
  nouveau, and bunch of features in various drivers.

  docs:
   - lots of updated docs

  core:
   - require crtc to have unique primary plane
   - fourcc macro fix
   - PCI bar quirk for bar resizing
   - don't sent hotplug on error
   - move vm code to legacy
   - nuke hose only used on old oboslete alpha

  dma-buf:
   - kernel doc updates
   - improved lock tracking

  dp/hdmi:
   - DP-HDMI2.1 protocol converter support

  ttm:
   - bo size handling cleanup
   - release a pinned bo warning
   - cleanup lru handler
   - avoid using pages with drm_prime_sg_to_page_addr_arrays

  cma-helper:
   - prime/mmap fixes

  bridge:
   - add DP support

  gma500:
   - remove gma3600 support

  i915:
   - try eDP fast/narrow link again with fallback
   - Intel eDP backlight control
   - replace display register read/write macros
   - refactor intel_display.c
   - display power improvements
   - HPD code cleanup
   - Rocketlake display fixes
   - Power/backlight/RPM fixes
   - DG1 display fix
   - IVB/BYT clear residuals security fix again
   - make i915 mitigations options via parameter
   - HSW GT1 GPU hangs fixes
   - DG1 workaround hang fixes
   - TGL DMAR hang avoidance
   - Lots of GT fixes
   - follow on fixes for residuals clear
   - gen7 per-engine-reset support
   - HDCP2.2 + HDCP1.4 GEN12 DP MST support
   - TGL clear color support
   - backlight refactoring
   - VRR/Adaptive sync enabling on DP/EDP for TGL+
   - async flips for all ilk+

  amdgpu:
   - rework IH ring handling (Vega/Navi)
   - rework HDP handling (Vega/Navi)
   - swSMU updates for renoir/vangogh
   - Sienna Cichild overdrive support
   - FP16 on DCE8-11 support
   - GPU reset on navy flounder/vangogh
   - SMU profile fixes for APU
   - SR-IOV fixes
   - Vangogh SMU fixes
   - fan speed control fixes

  amdkfd:
   - config handling fix
   - buffer free fix
   - recursive lock warnings fix

  nouveau:
   - Turing MMU fault recovery fixes
   - mDP connectors reporting fix
   - audio locking fixes
   - rework engines/instances code to support new scheme

  tegra:
   - VIC newer firmware support
   - display/gr2d fixes for older tegra
   - pm reference leak fix

  mediatek:
   - SOC MT8183 support
   - decouple sub driver + share mtk mutex driver

  radeon:
   - PCI resource fix for some platforms

  ingenic:
   - pm support
   - 8-bit delta RGB panels

  vmwgfx:
   - managed driver helpers

  vc4:
   - BCM2711 DSI1 support
   - converted to atomic helpers
   - enable 10/12 bpc outputs
   - gem prime mmap helpers
   - CEC fix

  omap:
   - use degamma table
   - CTM support
   - rework DSI support

  imx:
   - stack usage fixes
   - drm managed support
   - imx-tve clock provider leak fix
-

  rcar-du:
   - default mode fixes
   - conversion to managed API

  hisilicon:
   - use simple encoder

  vkms:
   - writeback connector support

  d3:
   - BT2020 support"

* tag 'drm-next-2021-02-19' of git://anongit.freedesktop.org/drm/drm: (1459 commits)
  drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2)
  drm/radeon: OLAND boards don't have VCE
  drm/amdkfd: Fix recursive lock warnings
  drm/amd/display: Add FPU wrappers to dcn21_validate_bandwidth()
  drm/amd/display: Fix potential integer overflow
  drm/amdgpu/display: remove hdcp_srm sysfs on device removal
  drm/amdgpu: fix CGTS_TCC_DISABLE register offset on gfx10.3
  drm/i915/gt: Correct surface base address for renderclear
  drm/i915: Disallow plane x+w>stride on ilk+ with X-tiling
  drm/nouveau/top/ga100: initial support
  drm/nouveau/top: add ioctrl/nvjpg
  drm/nouveau/privring: rename from ibus
  drm/nouveau/nvkm: remove nvkm_subdev.index
  drm/nouveau/nvkm: determine subdev id/order from layout
  drm/nouveau/vic: switch to instanced constructor
  drm/nouveau/sw: switch to instanced constructor
  drm/nouveau/sec2: switch to instanced constructor
  drm/nouveau/sec: switch to instanced constructor
  drm/nouveau/pm: switch to instanced constructor
  drm/nouveau/nvenc: switch to instanced constructor
  ...

1 files changed, 44 insertions, 2 deletions

diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c
index 4d278573cdb9..05eb759da6fc 100644
--- a/drivers/gpu/drm/bridge/display-connector.c
+++ b/drivers/gpu/drm/bridge/display-connector.c
@@ -11,6 +11,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
 
 #include <drm/drm_bridge.h>
 #include <drm/drm_edid.h>
@@ -20,6 +21,8 @@ struct display_connector {
 
 	struct gpio_desc	*hpd_gpio;
 	int			hpd_irq;
+
+	struct regulator	*dp_pwr;
 };
 
 static inline struct display_connector *
@@ -172,11 +175,12 @@ static int display_connector_probe(struct platform_device *pdev)
 	of_property_read_string(pdev->dev.of_node, "label", &label);
 
 	/*
-	 * Get the HPD GPIO for DVI and HDMI connectors. If the GPIO can provide
+	 * Get the HPD GPIO for DVI, HDMI and DP connectors. If the GPIO can provide
 	 * edge interrupts, register an interrupt handler.
 	 */
 	if (type == DRM_MODE_CONNECTOR_DVII ||
-	    type == DRM_MODE_CONNECTOR_HDMIA) {
+	    type == DRM_MODE_CONNECTOR_HDMIA ||
+	    type == DRM_MODE_CONNECTOR_DisplayPort) {
 		conn->hpd_gpio = devm_gpiod_get_optional(&pdev->dev, "hpd",
 							 GPIOD_IN);
 		if (IS_ERR(conn->hpd_gpio)) {
@@ -223,6 +227,38 @@ static int display_connector_probe(struct platform_device *pdev)
 		}
 	}
 
+	/* Get the DP PWR for DP connector. */
+	if (type == DRM_MODE_CONNECTOR_DisplayPort) {
+		int ret;
+
+		conn->dp_pwr = devm_regulator_get_optional(&pdev->dev, "dp-pwr");
+
+		if (IS_ERR(conn->dp_pwr)) {
+			ret = PTR_ERR(conn->dp_pwr);
+
+			switch (ret) {
+			case -ENODEV:
+				conn->dp_pwr = NULL;
+				break;
+
+			case -EPROBE_DEFER:
+				return -EPROBE_DEFER;
+
+			default:
+				dev_err(&pdev->dev, "failed to get DP PWR regulator: %d\n", ret);
+				return ret;
+			}
+		}
+
+		if (conn->dp_pwr) {
+			ret = regulator_enable(conn->dp_pwr);
+			if (ret) {
+				dev_err(&pdev->dev, "failed to enable DP PWR regulator: %d\n", ret);
+				return ret;
+			}
+		}
+	}
+
 	conn->bridge.funcs = &display_connector_bridge_funcs;
 	conn->bridge.of_node = pdev->dev.of_node;
 
@@ -251,6 +287,9 @@ static int display_connector_remove(struct platform_device *pdev)
 {
 	struct display_connector *conn = platform_get_drvdata(pdev);
 
+	if (conn->dp_pwr)
+		regulator_disable(conn->dp_pwr);
+
 	drm_bridge_remove(&conn->bridge);
 
 	if (!IS_ERR(conn->bridge.ddc))
@@ -275,6 +314,9 @@ static const struct of_device_id display_connector_match[] = {
 	}, {
 		.compatible = "vga-connector",
 		.data = (void *)DRM_MODE_CONNECTOR_VGA,
+	}, {
+		.compatible = "dp-connector",
+		.data = (void *)DRM_MODE_CONNECTOR_DisplayPort,
 	},
 	{},
 };