Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux

Pull drm u pdates from Dave Airlie:
 "This is the main drm pull request for v4.12. Apart from two fixes
  pulls, everything should have been in drm-next for at least 2 weeks.

  The biggest thing in here is AMD released the public headers for their
  upcoming VEGA GPUs. These as always are quite a sizeable chunk of
  header files. They've also added initial non-display support for those
  GPUs, though they aren't available in production yet.

  Otherwise it's pretty much normal.

  New bridge drivers:
   - megachips-stdpxxxx-ge-b850v3-fw LVDS->DP++
   - generic LVDS bridge support.

  Core:
   - Displayport link train failure reporting to userspace
   - debugfs interface cleaned up
   - subsystem TODO in kerneldoc now
   - Extended fbdev support (flipping and vblank wait)
   - drm_platform removed
   - EDP CRC support in helper
   - HF-VSDB SCDC support in EDID parser
   - Lots of code cleanups and header extraction
   - Thunderbolt external GPU awareness
   - Atomic helper improvements
   - Documentation improvements

  panel:
   - Sitronix and Samsung new panel support

  amdgpu:
   - Preliminary vega10 support
   - Multi-level page table support
   - GPU sensor support for userspace
   - PRT support for sparse buffers
   - SR-IOV improvements
   - Non-contig VRAM CPU mapping

  i915:
   - Atomic modesetting enabled by default on Gen5+
   - LSPCON improvements
   - Atomic state handling for cdclk
   - GPU reset improvements
   - In-kernel unit tests
   - Geminilake improvements and color manager support
   - Designware i2c fixes
   - vblank evasion improvements
   - Hotplug safe connector iterators
   - GVT scheduler QoS support
   - GVT Kabylake support

  nouveau:
   - Acceleration support for Pascal (GP10x).
   - Rearchitecture of code handling proprietary signed firmware
   - Fix GTX 970 with odd MMU configuration
   - GP10B support
   - GP107 acceleration support

  vmwgfx:
   - Atomic modesetting support for vmwgfx

  omapdrm:
   - Support for render nodes
   - Refactor omapdss code
   - Fix some probe ordering issues
   - Fix too dark RGB565 rendering

  sunxi:
   - prelim rework for multiple pipes.

  mali-dp:
   - Color management support
   - Plane scaling
   - Power management improvements

  imx-drm:
   - Prefetch Resolve Engine/Gasket on i.MX6QP
   - Deferred plane disabling
   - Separate alpha support

  mediatek:
   - Mediatek SoC MT2701 support

  rcar-du:
   - Gen3 HDMI support

  msm:
   - 4k support for newer chips
   - OPP bindings for gpu
   - prep work for per-process pagetables

  vc4:
   - HDMI audio support
   - fixes

  qxl:
   - minor fixes.

  dw-hdmi:
   - PHY improvements
   - CSC fixes
   - Amlogic GX SoC support"

* tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux: (1778 commits)
  drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection
  drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr()
  drm/nouveau/kms: Increase max retries in scanout position queries.
  drm/nouveau/bios/bitP: check that table is long enough for optional pointers
  drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine
  drm: mali-dp: use div_u64 for expensive 64-bit divisions
  drm/i915: Confirm the request is still active before adding it to the await
  drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio
  drm/i915/selftests: Allocate inode/file dynamically
  drm/i915: Fix system hang with EI UP masked on Haswell
  drm/i915: checking for NULL instead of IS_ERR() in mock selftests
  drm/i915: Perform link quality check unconditionally during long pulse
  drm/i915: Fix use after free in lpe_audio_platdev_destroy()
  drm/i915: Use the right mapping_gfp_mask for final shmem allocation
  drm/i915: Make legacy cursor updates more unsynced
  drm/i915: Apply a cond_resched() to the saturated signaler
  drm/i915: Park the signaler before sleeping
  drm: mali-dp: Check the mclk rate and allow up/down scaling
  drm: mali-dp: Enable image enhancement when scaling
  drm: mali-dp: Add plane upscaling support
  ...

1 files changed, 76 insertions, 13 deletions

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index b054ea349952..eee4efda829e 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -8,6 +8,10 @@
  *
  */
 
+#include <linux/delay.h>
+#include <linux/fwnode.h>
+#include <linux/gpio/consumer.h>
+#include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/of_graph.h>
 #include <linux/platform_device.h>
@@ -18,11 +22,15 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 
+#define HOTPLUG_DEBOUNCE_MS		1100
+
 struct tfp410 {
 	struct drm_bridge	bridge;
 	struct drm_connector	connector;
 
 	struct i2c_adapter	*ddc;
+	struct gpio_desc	*hpd;
+	struct delayed_work	hpd_work;
 
 	struct device *dev;
 };
@@ -76,6 +84,13 @@ tfp410_connector_detect(struct drm_connector *connector, bool force)
 {
 	struct tfp410 *dvi = drm_connector_to_tfp410(connector);
 
+	if (dvi->hpd) {
+		if (gpiod_get_value_cansleep(dvi->hpd))
+			return connector_status_connected;
+		else
+			return connector_status_disconnected;
+	}
+
 	if (dvi->ddc) {
 		if (drm_probe_ddc(dvi->ddc))
 			return connector_status_connected;
@@ -106,6 +121,9 @@ static int tfp410_attach(struct drm_bridge *bridge)
 		return -ENODEV;
 	}
 
+	if (dvi->hpd)
+		dvi->connector.polled = DRM_CONNECTOR_POLL_HPD;
+
 	drm_connector_helper_add(&dvi->connector,
 				 &tfp410_con_helper_funcs);
 	ret = drm_connector_init(bridge->dev, &dvi->connector,
@@ -125,20 +143,46 @@ static const struct drm_bridge_funcs tfp410_bridge_funcs = {
 	.attach		= tfp410_attach,
 };
 
-static int tfp410_get_connector_ddc(struct tfp410 *dvi)
+static void tfp410_hpd_work_func(struct work_struct *work)
+{
+	struct tfp410 *dvi;
+
+	dvi = container_of(work, struct tfp410, hpd_work.work);
+
+	if (dvi->bridge.dev)
+		drm_helper_hpd_irq_event(dvi->bridge.dev);
+}
+
+static irqreturn_t tfp410_hpd_irq_thread(int irq, void *arg)
 {
-	struct device_node *ep = NULL, *connector_node = NULL;
-	struct device_node *ddc_phandle = NULL;
+	struct tfp410 *dvi = arg;
+
+	mod_delayed_work(system_wq, &dvi->hpd_work,
+			msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS));
+
+	return IRQ_HANDLED;
+}
+
+static int tfp410_get_connector_properties(struct tfp410 *dvi)
+{
+	struct device_node *connector_node, *ddc_phandle;
 	int ret = 0;
 
 	/* port@1 is the connector node */
-	ep = of_graph_get_endpoint_by_regs(dvi->dev->of_node, 1, -1);
-	if (!ep)
-		goto fail;
-
-	connector_node = of_graph_get_remote_port_parent(ep);
+	connector_node = of_graph_get_remote_node(dvi->dev->of_node, 1, -1);
 	if (!connector_node)
-		goto fail;
+		return -ENODEV;
+
+	dvi->hpd = fwnode_get_named_gpiod(&connector_node->fwnode,
+					"hpd-gpios", 0, GPIOD_IN, "hpd");
+	if (IS_ERR(dvi->hpd)) {
+		ret = PTR_ERR(dvi->hpd);
+		dvi->hpd = NULL;
+		if (ret == -ENOENT)
+			ret = 0;
+		else
+			goto fail;
+	}
 
 	ddc_phandle = of_parse_phandle(connector_node, "ddc-i2c-bus", 0);
 	if (!ddc_phandle)
@@ -150,10 +194,10 @@ static int tfp410_get_connector_ddc(struct tfp410 *dvi)
 	else
 		ret = -EPROBE_DEFER;
 
+	of_node_put(ddc_phandle);
+
 fail:
-	of_node_put(ep);
 	of_node_put(connector_node);
-	of_node_put(ddc_phandle);
 	return ret;
 }
 
@@ -176,10 +220,23 @@ static int tfp410_init(struct device *dev)
 	dvi->bridge.of_node = dev->of_node;
 	dvi->dev = dev;
 
-	ret = tfp410_get_connector_ddc(dvi);
+	ret = tfp410_get_connector_properties(dvi);
 	if (ret)
 		goto fail;
 
+	if (dvi->hpd) {
+		INIT_DELAYED_WORK(&dvi->hpd_work, tfp410_hpd_work_func);
+
+		ret = devm_request_threaded_irq(dev, gpiod_to_irq(dvi->hpd),
+			NULL, tfp410_hpd_irq_thread, IRQF_TRIGGER_RISING |
+			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+			"hdmi-hpd", dvi);
+		if (ret) {
+			DRM_ERROR("failed to register hpd interrupt\n");
+			goto fail;
+		}
+	}
+
 	ret = drm_bridge_add(&dvi->bridge);
 	if (ret) {
 		dev_err(dev, "drm_bridge_add() failed: %d\n", ret);
@@ -189,6 +246,8 @@ static int tfp410_init(struct device *dev)
 	return 0;
 fail:
 	i2c_put_adapter(dvi->ddc);
+	if (dvi->hpd)
+		gpiod_put(dvi->hpd);
 	return ret;
 }
 
@@ -196,10 +255,14 @@ static int tfp410_fini(struct device *dev)
 {
 	struct tfp410 *dvi = dev_get_drvdata(dev);
 
+	cancel_delayed_work_sync(&dvi->hpd_work);
+
 	drm_bridge_remove(&dvi->bridge);
 
 	if (dvi->ddc)
 		i2c_put_adapter(dvi->ddc);
+	if (dvi->hpd)
+		gpiod_put(dvi->hpd);
 
 	return 0;
 }
@@ -220,7 +283,7 @@ static const struct of_device_id tfp410_match[] = {
 };
 MODULE_DEVICE_TABLE(of, tfp410_match);
 
-struct platform_driver tfp410_platform_driver = {
+static struct platform_driver tfp410_platform_driver = {
 	.probe	= tfp410_probe,
 	.remove	= tfp410_remove,
 	.driver	= {