Merge tag 'drm-for-v4.17' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "Cannonlake and Vega12 support are probably the two major things. This
  pull lacks nouveau, Ben had some unforseen leave and a few other
  blockers so we'll see how things look or maybe leave it for this merge
  window.

  core:
   - Device links to handle sound/gpu pm dependency
   - Color encoding/range properties
   - Plane clipping into plane check helper
   - Backlight helpers
   - DP TP4 + HBR3 helper support

  amdgpu:
   - Vega12 support
   - Enable DC by default on all supported GPUs
   - Powerplay restructuring and cleanup
   - DC bandwidth calc updates
   - DC backlight on pre-DCE11
   - TTM backing store dropping support
   - SR-IOV fixes
   - Adding "wattman" like functionality
   - DC crc support
   - Improved DC dual-link handling

  amdkfd:
   - GPUVM support for dGPU
   - KFD events for dGPU
   - Enable PCIe atomics for dGPUs
   - HSA process eviction support
   - Live-lock fixes for process eviction
   - VM page table allocation fix for large-bar systems

  panel:
   - Raydium RM68200
   - AUO G104SN02 V2
   - KEO TX31D200VM0BAA
   - ARM Versatile panels

  i915:
   - Cannonlake support enabled
   - AUX-F port support added
   - Icelake base enabling until internal milestone of forcewake support
   - Query uAPI interface (used for GPU topology information currently)
   - Compressed framebuffer support for sprites
   - kmem cache shrinking when GPU is idle
   - Avoid boosting GPU when waited item is being processed already
   - Avoid retraining LSPCON link unnecessarily
   - Decrease request signaling latency
   - Deprecation of I915_SET_COLORKEY_NONE
   - Kerneldoc and compiler warning cleanup for upcoming CI enforcements
   - Full range ycbcr toggling
   - HDCP support

  i915/gvt:
   - Big refactor for shadow ppgtt
   - KBL context save/restore via LRI cmd (Weinan)
   - Properly unmap dma for guest page (Changbin)

  vmwgfx:
   - Lots of various improvements

  etnaviv:
   - Use the drm gpu scheduler
   - prep work for GC7000L support

  vc4:
   - fix alpha blending
   - Expose perf counters to userspace

  pl111:
   - Bandwidth checking/limiting
   - Versatile panel support

  sun4i:
   - A83T HDMI support
   - A80 support
   - YUV plane support
   - H3/H5 HDMI support

  omapdrm:
   - HPD support for DVI connector
   - remove lots of static variables

  msm:
   - DSI updates from 10nm / SDM845
   - fix for race condition with a3xx/a4xx fence completion irq
   - some refactoring/prep work for eventual a6xx support (ie. when we
     have a userspace)
   - a5xx debugfs enhancements
   - some mdp5 fixes/cleanups to prepare for eventually merging
     writeback
   - support (ie. when we have a userspace)

  tegra:
   - mmap() fixes for fbdev devices
   - Overlay plane for hw cursor fix
   - dma-buf cache maintenance support

  mali-dp:
   - YUV->RGB conversion support

  rockchip:
   - rk3399/chromebook fixes and improvements

  rcar-du:
   - LVDS support move to drm bridge
   - DT bindings for R8A77995
   - Driver/DT support for R8A77970

  tilcdc:
   - DRM panel support"

* tag 'drm-for-v4.17' of git://people.freedesktop.org/~airlied/linux: (1646 commits)
  drm/i915: Fix hibernation with ACPI S0 target state
  drm/i915/execlists: Use a locked clear_bit() for synchronisation with interrupt
  drm/i915: Specify which engines to reset following semaphore/event lockups
  drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.
  drm/amdkfd: Use ordered workqueue to restore processes
  drm/amdgpu: Fix acquiring VM on large-BAR systems
  drm/amd/pp: clean header file hwmgr.h
  drm/amd/pp: use mlck_table.count for array loop index limit
  drm: Fix uabi regression by allowing garbage mode->type from userspace
  drm/amdgpu: Add an ATPX quirk for hybrid laptop
  drm/amdgpu: fix spelling mistake: "asssert" -> "assert"
  drm/amd/pp: Add new asic support in pp_psm.c
  drm/amd/pp: Clean up powerplay code on Vega12
  drm/amd/pp: Add smu irq handlers for legacy asics
  drm/amd/pp: Fix set wrong temperature range on smu7
  drm/amdgpu: Don't change preferred domian when fallback GTT v5
  drm/vmwgfx: Bump version patchlevel and date
  drm/vmwgfx: use monotonic event timestamps
  drm/vmwgfx: Unpin the screen object backup buffer when not used
  drm/vmwgfx: Stricter count of legacy surface device resources
  ...

1 files changed, 129 insertions, 17 deletions

diff --git a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
index 10b4b97d3595..6d8cbd9e2110 100644
--- a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
+++ b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
@@ -9,6 +9,7 @@
  * the Free Software Foundation.
  */
 
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -44,6 +45,14 @@ struct panel_drv_data {
 	struct videomode vm;
 
 	struct i2c_adapter *i2c_adapter;
+
+	struct gpio_desc *hpd_gpio;
+
+	void (*hpd_cb)(void *cb_data, enum drm_connector_status status);
+	void *hpd_cb_data;
+	bool hpd_enabled;
+	/* mutex for hpd fields above */
+	struct mutex hpd_lock;
 };
 
 #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
@@ -51,16 +60,25 @@ struct panel_drv_data {
 static int dvic_connect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
-	struct omap_dss_device *in = ddata->in;
+	struct omap_dss_device *in;
 	int r;
 
 	if (omapdss_device_is_connected(dssdev))
 		return 0;
 
+	in = omapdss_of_find_source_for_first_ep(dssdev->dev->of_node);
+	if (IS_ERR(in)) {
+		dev_err(dssdev->dev, "failed to find video source\n");
+		return PTR_ERR(in);
+	}
+
 	r = in->ops.dvi->connect(in, dssdev);
-	if (r)
+	if (r) {
+		omap_dss_put_device(in);
 		return r;
+	}
 
+	ddata->in = in;
 	return 0;
 }
 
@@ -73,6 +91,9 @@ static void dvic_disconnect(struct omap_dss_device *dssdev)
 		return;
 
 	in->ops.dvi->disconnect(in, dssdev);
+
+	omap_dss_put_device(in);
+	ddata->in = NULL;
 }
 
 static int dvic_enable(struct omap_dss_device *dssdev)
@@ -177,6 +198,9 @@ static int dvic_read_edid(struct omap_dss_device *dssdev,
 	struct panel_drv_data *ddata = to_panel_data(dssdev);
 	int r, l, bytes_read;
 
+	if (ddata->hpd_gpio && !gpiod_get_value_cansleep(ddata->hpd_gpio))
+		return -ENODEV;
+
 	if (!ddata->i2c_adapter)
 		return -ENODEV;
 
@@ -208,6 +232,9 @@ static bool dvic_detect(struct omap_dss_device *dssdev)
 	unsigned char out;
 	int r;
 
+	if (ddata->hpd_gpio)
+		return gpiod_get_value_cansleep(ddata->hpd_gpio);
+
 	if (!ddata->i2c_adapter)
 		return true;
 
@@ -216,6 +243,60 @@ static bool dvic_detect(struct omap_dss_device *dssdev)
 	return r == 0;
 }
 
+static int dvic_register_hpd_cb(struct omap_dss_device *dssdev,
+				 void (*cb)(void *cb_data,
+					    enum drm_connector_status status),
+				 void *cb_data)
+{
+	struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+	if (!ddata->hpd_gpio)
+		return -ENOTSUPP;
+
+	mutex_lock(&ddata->hpd_lock);
+	ddata->hpd_cb = cb;
+	ddata->hpd_cb_data = cb_data;
+	mutex_unlock(&ddata->hpd_lock);
+	return 0;
+}
+
+static void dvic_unregister_hpd_cb(struct omap_dss_device *dssdev)
+{
+	struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+	if (!ddata->hpd_gpio)
+		return;
+
+	mutex_lock(&ddata->hpd_lock);
+	ddata->hpd_cb = NULL;
+	ddata->hpd_cb_data = NULL;
+	mutex_unlock(&ddata->hpd_lock);
+}
+
+static void dvic_enable_hpd(struct omap_dss_device *dssdev)
+{
+	struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+	if (!ddata->hpd_gpio)
+		return;
+
+	mutex_lock(&ddata->hpd_lock);
+	ddata->hpd_enabled = true;
+	mutex_unlock(&ddata->hpd_lock);
+}
+
+static void dvic_disable_hpd(struct omap_dss_device *dssdev)
+{
+	struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+	if (!ddata->hpd_gpio)
+		return;
+
+	mutex_lock(&ddata->hpd_lock);
+	ddata->hpd_enabled = false;
+	mutex_unlock(&ddata->hpd_lock);
+}
+
 static struct omap_dss_driver dvic_driver = {
 	.connect	= dvic_connect,
 	.disconnect	= dvic_disconnect,
@@ -229,23 +310,60 @@ static struct omap_dss_driver dvic_driver = {
 
 	.read_edid	= dvic_read_edid,
 	.detect		= dvic_detect,
+
+	.register_hpd_cb	= dvic_register_hpd_cb,
+	.unregister_hpd_cb	= dvic_unregister_hpd_cb,
+	.enable_hpd		= dvic_enable_hpd,
+	.disable_hpd		= dvic_disable_hpd,
 };
 
+static irqreturn_t dvic_hpd_isr(int irq, void *data)
+{
+	struct panel_drv_data *ddata = data;
+
+	mutex_lock(&ddata->hpd_lock);
+	if (ddata->hpd_enabled && ddata->hpd_cb) {
+		enum drm_connector_status status;
+
+		if (dvic_detect(&ddata->dssdev))
+			status = connector_status_connected;
+		else
+			status = connector_status_disconnected;
+
+		ddata->hpd_cb(ddata->hpd_cb_data, status);
+	}
+	mutex_unlock(&ddata->hpd_lock);
+
+	return IRQ_HANDLED;
+}
+
 static int dvic_probe_of(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct device_node *node = pdev->dev.of_node;
-	struct omap_dss_device *in;
 	struct device_node *adapter_node;
 	struct i2c_adapter *adapter;
+	struct gpio_desc *gpio;
+	int r;
 
-	in = omapdss_of_find_source_for_first_ep(node);
-	if (IS_ERR(in)) {
-		dev_err(&pdev->dev, "failed to find video source\n");
-		return PTR_ERR(in);
+	gpio = devm_gpiod_get_optional(&pdev->dev, "hpd", GPIOD_IN);
+	if (IS_ERR(gpio)) {
+		dev_err(&pdev->dev, "failed to parse HPD gpio\n");
+		return PTR_ERR(gpio);
 	}
 
-	ddata->in = in;
+	ddata->hpd_gpio = gpio;
+
+	mutex_init(&ddata->hpd_lock);
+
+	if (ddata->hpd_gpio) {
+		r = devm_request_threaded_irq(&pdev->dev,
+			gpiod_to_irq(ddata->hpd_gpio), NULL, dvic_hpd_isr,
+			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+			"DVI HPD", ddata);
+		if (r)
+			return r;
+	}
 
 	adapter_node = of_parse_phandle(node, "ddc-i2c-bus", 0);
 	if (adapter_node) {
@@ -253,7 +371,6 @@ static int dvic_probe_of(struct platform_device *pdev)
 		of_node_put(adapter_node);
 		if (adapter == NULL) {
 			dev_err(&pdev->dev, "failed to parse ddc-i2c-bus\n");
-			omap_dss_put_device(ddata->in);
 			return -EPROBE_DEFER;
 		}
 
@@ -275,9 +392,6 @@ static int dvic_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, ddata);
 
-	if (!pdev->dev.of_node)
-		return -ENODEV;
-
 	r = dvic_probe_of(pdev);
 	if (r)
 		return r;
@@ -300,9 +414,8 @@ static int dvic_probe(struct platform_device *pdev)
 	return 0;
 
 err_reg:
-	omap_dss_put_device(ddata->in);
-
 	i2c_put_adapter(ddata->i2c_adapter);
+	mutex_destroy(&ddata->hpd_lock);
 
 	return r;
 }
@@ -311,17 +424,16 @@ static int __exit dvic_remove(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
-	struct omap_dss_device *in = ddata->in;
 
 	omapdss_unregister_display(&ddata->dssdev);
 
 	dvic_disable(dssdev);
 	dvic_disconnect(dssdev);
 
-	omap_dss_put_device(in);
-
 	i2c_put_adapter(ddata->i2c_adapter);
 
+	mutex_destroy(&ddata->hpd_lock);
+
 	return 0;
 }