Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

Cross-subsystem Changes:

- device tree doc for the Mitsubishi AA070MC01 and Tianma TM070RVHG71
panels (Lukasz Majewski) and for a 2nd endpoint on stm32 (Philippe Cornu)

Core Changes:

The most important changes are:

- Add drm_driver .last_close and .output_poll_changed helpers to reduce
fbdev emulation footprint in drivers (Noralf)
- Fix plane clipping in core and for vmwgfx (Ville)

Then we have a bunch of of improvement for print and debug such as the
addition of a framebuffer debugfs file. ELD connector, HDMI and
improvements.  And a bunch of misc improvements, clean ups and style
changes and doc updates

[airlied: drop eld bits from amdgpu_dm]

Driver Changes:

- sii8620: filter unsupported modes and add DVI mode support (Maciej Purski)
- rockchip: analogix_dp: Remove unnecessary init code (Jeffy Chen)
- virtio, cirrus: add fb create_handle support to enable screenshots(Lepton Wu)
- virtio: replace reference/unreference with get/put (Aastha Gupta)
- vc4, gma500: Convert timers to use timer_setup() (Kees Cook)
- vc4: Reject HDMI modes with too high of clocks (Eric)
- vc4: Add support for more pixel formats (Dave Stevenson)
- stm: dsi: Rename driver name to "stm32-display-dsi" (Philippe Cornu)
- stm: ltdc: add a 2nd endpoint (Philippe Cornu)
- via: use monotonic time for VIA_WAIT_IRQ (Arnd Bergmann)

* tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc: (96 commits)
  drm/bridge: tc358767: add copyright lines
  MAINTAINERS: change maintainer for Rockchip drm drivers
  drm/vblank: Fix vblank timestamp debugs
  drm/via: use monotonic time for VIA_WAIT_IRQ
  dma-buf: Fix ifnullfree.cocci warnings
  drm/printer: Add drm_vprintf()
  drm/edid: Allow HDMI infoframe without VIC or S3D
  video/hdmi: Allow "empty" HDMI infoframes
  dma-buf/fence: Fix lock inversion within dma-fence-array
  drm/sti: Handle return value of platform_get_irq_byname
  drm/vc4: Add support for NV21 and NV61.
  drm/vc4: Use .pixel_order instead of custom .flip_cbcr
  drm/vc4: Add support for DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888
  drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c
  drm: Check crtc_state->enable rather than crtc->enabled in drm_plane_helper_check_state()
  drm/vmwgfx: Try to fix plane clipping
  drm/vmwgfx: Use drm_plane_helper_check_state()
  drm/vmwgfx: Remove bogus crtc coords vs fb size check
  gpu: gma500: remove unneeded DRIVER_LICENSE #define
  drm: don't link DP aux i2c adapter to the hardware device node
  ...

1 files changed, 46 insertions, 20 deletions

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 735c9081202a..35e884239f60 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -33,6 +33,8 @@
 
 #define MAX_IRQ 4
 
+#define MAX_ENDPOINTS 2
+
 #define HWVER_10200 0x010200
 #define HWVER_10300 0x010300
 #define HWVER_20101 0x020101
@@ -556,7 +558,7 @@ static int ltdc_plane_atomic_check(struct drm_plane *plane,
 	src_h = state->src_h >> 16;
 
 	/* Reject scaling */
-	if ((src_w != state->crtc_w) || (src_h != state->crtc_h)) {
+	if (src_w != state->crtc_w || src_h != state->crtc_h) {
 		DRM_ERROR("Scaling is not supported");
 		return -EINVAL;
 	}
@@ -856,18 +858,33 @@ int ltdc_load(struct drm_device *ddev)
 	struct ltdc_device *ldev = ddev->dev_private;
 	struct device *dev = ddev->dev;
 	struct device_node *np = dev->of_node;
-	struct drm_bridge *bridge;
-	struct drm_panel *panel;
+	struct drm_bridge *bridge[MAX_ENDPOINTS] = {NULL};
+	struct drm_panel *panel[MAX_ENDPOINTS] = {NULL};
 	struct drm_crtc *crtc;
 	struct reset_control *rstc;
 	struct resource *res;
-	int irq, ret, i;
+	int irq, ret, i, endpoint_not_ready = -ENODEV;
 
 	DRM_DEBUG_DRIVER("\n");
 
-	ret = drm_of_find_panel_or_bridge(np, 0, 0, &panel, &bridge);
-	if (ret)
-		return ret;
+	/* Get endpoints if any */
+	for (i = 0; i < MAX_ENDPOINTS; i++) {
+		ret = drm_of_find_panel_or_bridge(np, 0, i, &panel[i],
+						  &bridge[i]);
+
+		/*
+		 * If at least one endpoint is ready, continue probing,
+		 * else if at least one endpoint is -EPROBE_DEFER and
+		 * there is no previous ready endpoints, defer probing.
+		 */
+		if (!ret)
+			endpoint_not_ready = 0;
+		else if (ret == -EPROBE_DEFER && endpoint_not_ready)
+			endpoint_not_ready = -EPROBE_DEFER;
+	}
+
+	if (endpoint_not_ready)
+		return endpoint_not_ready;
 
 	rstc = devm_reset_control_get_exclusive(dev, NULL);
 
@@ -928,19 +945,25 @@ int ltdc_load(struct drm_device *ddev)
 
 	DRM_INFO("ltdc hw version 0x%08x - ready\n", ldev->caps.hw_version);
 
-	if (panel) {
-		bridge = drm_panel_bridge_add(panel, DRM_MODE_CONNECTOR_DPI);
-		if (IS_ERR(bridge)) {
-			DRM_ERROR("Failed to create panel-bridge\n");
-			ret = PTR_ERR(bridge);
-			goto err;
+	/* Add endpoints panels or bridges if any */
+	for (i = 0; i < MAX_ENDPOINTS; i++) {
+		if (panel[i]) {
+			bridge[i] = drm_panel_bridge_add(panel[i],
+							DRM_MODE_CONNECTOR_DPI);
+			if (IS_ERR(bridge[i])) {
+				DRM_ERROR("panel-bridge endpoint %d\n", i);
+				ret = PTR_ERR(bridge[i]);
+				goto err;
+			}
 		}
-	}
 
-	ret = ltdc_encoder_init(ddev, bridge);
-	if (ret) {
-		DRM_ERROR("Failed to init encoder\n");
-		goto err;
+		if (bridge[i]) {
+			ret = ltdc_encoder_init(ddev, bridge[i]);
+			if (ret) {
+				DRM_ERROR("init encoder endpoint %d\n", i);
+				goto err;
+			}
+		}
 	}
 
 	crtc = devm_kzalloc(dev, sizeof(*crtc), GFP_KERNEL);
@@ -968,7 +991,8 @@ int ltdc_load(struct drm_device *ddev)
 	return 0;
 
 err:
-	drm_panel_bridge_remove(bridge);
+	for (i = 0; i < MAX_ENDPOINTS; i++)
+		drm_panel_bridge_remove(bridge[i]);
 
 	clk_disable_unprepare(ldev->pixel_clk);
 
@@ -978,10 +1002,12 @@ err:
 void ltdc_unload(struct drm_device *ddev)
 {
 	struct ltdc_device *ldev = ddev->dev_private;
+	int i;
 
 	DRM_DEBUG_DRIVER("\n");
 
-	drm_of_panel_bridge_remove(ddev->dev->of_node, 0, 0);
+	for (i = 0; i < MAX_ENDPOINTS; i++)
+		drm_of_panel_bridge_remove(ddev->dev->of_node, 0, i);
 
 	clk_disable_unprepare(ldev->pixel_clk);
 }