drm fixes for 4.13-rc7, i915, core, imx and sun4i

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Merge tag 'drm-fixes-for-v4.13-rc7' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Fixes for rc7, nothing too crazy, some core, i915, and sunxi fixes,
  Intel CI has been responsible for some of these fixes being required"

* tag 'drm-fixes-for-v4.13-rc7' of git://people.freedesktop.org/~airlied/linux:
  drm/i915/gvt: Fix the kernel null pointer error
  drm: Release driver tracking before making the object available again
  drm/i915: Clear lost context-switch interrupts across reset
  drm/i915/bxt: use NULL for GPIO connection ID
  drm/i915/cnl: Fix LSPCON support.
  drm/i915/vbt: ignore extraneous child devices for a port
  drm/i915: Initialize 'data' in intel_dsi_dcs_backlight.c
  drm/atomic: If the atomic check fails, return its value first
  drm/atomic: Handle -EDEADLK with out-fences correctly
  drm: Fix framebuffer leak
  drm/imx: ipuv3-plane: fix YUV framebuffer scanout on the base plane
  gpu: ipu-v3: add DRM dependency
  drm/rockchip: Fix suspend crash when drm is not bound
  drm/sun4i: Implement drm_driver lastclose to restore fbdev console

drivers/gpu/drm/drm_atomic.c

@@ -1655,6 +1655,9 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
 	if (config->funcs->atomic_check)
 		ret = config->funcs->atomic_check(state->dev, state);
 
+	if (ret)
+		return ret;
+
 	if (!state->allow_modeset) {
 		for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
 			if (drm_atomic_crtc_needs_modeset(crtc_state)) {
@@ -1665,7 +1668,7 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
 		}
 	}
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL(drm_atomic_check_only);
 
@@ -2167,10 +2170,10 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
 	struct drm_atomic_state *state;
 	struct drm_modeset_acquire_ctx ctx;
 	struct drm_plane *plane;
-	struct drm_out_fence_state *fence_state = NULL;
+	struct drm_out_fence_state *fence_state;
 	unsigned plane_mask;
 	int ret = 0;
-	unsigned int i, j, num_fences = 0;
+	unsigned int i, j, num_fences;
 
 	/* disallow for drivers not supporting atomic: */
 	if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
@@ -2211,6 +2214,8 @@ retry:
 	plane_mask = 0;
 	copied_objs = 0;
 	copied_props = 0;
+	fence_state = NULL;
+	num_fences = 0;
 
 	for (i = 0; i < arg->count_objs; i++) {
 		uint32_t obj_id, count_props;

drivers/gpu/drm/drm_gem.c

@@ -255,13 +255,13 @@ drm_gem_object_release_handle(int id, void *ptr, void *data)
 	struct drm_gem_object *obj = ptr;
 	struct drm_device *dev = obj->dev;
 
+	if (dev->driver->gem_close_object)
+		dev->driver->gem_close_object(obj, file_priv);
+
 	if (drm_core_check_feature(dev, DRIVER_PRIME))
 		drm_gem_remove_prime_handles(obj, file_priv);
 	drm_vma_node_revoke(&obj->vma_node, file_priv);
 
-	if (dev->driver->gem_close_object)
-		dev->driver->gem_close_object(obj, file_priv);
-
 	drm_gem_object_handle_put_unlocked(obj);
 
 	return 0;

drivers/gpu/drm/drm_plane.c

@@ -601,6 +601,7 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
 
 		crtc = drm_crtc_find(dev, plane_req->crtc_id);
 		if (!crtc) {
+			drm_framebuffer_put(fb);
 			DRM_DEBUG_KMS("Unknown crtc ID %d\n",
 				      plane_req->crtc_id);
 			return -ENOENT;

drivers/gpu/drm/i915/gvt/cmd_parser.c

@@ -2714,7 +2714,7 @@ static int shadow_indirect_ctx(struct intel_shadow_wa_ctx *wa_ctx)
 unmap_src:
 	i915_gem_object_unpin_map(obj);
 put_obj:
-	i915_gem_object_put(wa_ctx->indirect_ctx.obj);
+	i915_gem_object_put(obj);
 	return ret;
 }
 

drivers/gpu/drm/i915/intel_bios.c

@@ -1120,8 +1120,8 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 	bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
 	uint8_t aux_channel, ddc_pin;
 	/* Each DDI port can have more than one value on the "DVO Port" field,
-	 * so look for all the possible values for each port and abort if more
-	 * than one is found. */
+	 * so look for all the possible values for each port.
+	 */
 	int dvo_ports[][3] = {
 		{DVO_PORT_HDMIA, DVO_PORT_DPA, -1},
 		{DVO_PORT_HDMIB, DVO_PORT_DPB, -1},
@@ -1130,7 +1130,10 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 		{DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE},
 	};
 
-	/* Find the child device to use, abort if more than one found. */
+	/*
+	 * Find the first child device to reference the port, report if more
+	 * than one found.
+	 */
 	for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
 		it = dev_priv->vbt.child_dev + i;
 
@@ -1140,14 +1143,14 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 
 			if (it->common.dvo_port == dvo_ports[port][j]) {
 				if (child) {
-					DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n",
+					DRM_DEBUG_KMS("More than one child device for port %c in VBT, using the first.\n",
 						      port_name(port));
-					return;
-				}
+				} else {
 					child = it;
 				}
 			}
 		}
+	}
 	if (!child)
 		return;
 

drivers/gpu/drm/i915/intel_dsi_dcs_backlight.c

@@ -46,7 +46,7 @@ static u32 dcs_get_backlight(struct intel_connector *connector)
 	struct intel_encoder *encoder = connector->encoder;
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
 	struct mipi_dsi_device *dsi_device;
-	u8 data;
+	u8 data = 0;
 	enum port port;
 
 	/* FIXME: Need to take care of 16 bit brightness level */

drivers/gpu/drm/i915/intel_dsi_vbt.c

@@ -306,7 +306,7 @@ static void bxt_exec_gpio(struct drm_i915_private *dev_priv,
 
 	if (!gpio_desc) {
 		gpio_desc = devm_gpiod_get_index(dev_priv->drm.dev,
-						 "panel", gpio_index,
+						 NULL, gpio_index,
 						 value ? GPIOD_OUT_LOW :
 						 GPIOD_OUT_HIGH);
 

drivers/gpu/drm/i915/intel_lrc.c

@@ -1221,6 +1221,14 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
 	return ret;
 }
 
+static u8 gtiir[] = {
+	[RCS] = 0,
+	[BCS] = 0,
+	[VCS] = 1,
+	[VCS2] = 1,
+	[VECS] = 3,
+};
+
 static int gen8_init_common_ring(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->i915;
@@ -1245,9 +1253,22 @@ static int gen8_init_common_ring(struct intel_engine_cs *engine)
 
 	DRM_DEBUG_DRIVER("Execlists enabled for %s\n", engine->name);
 
-	/* After a GPU reset, we may have requests to replay */
+	GEM_BUG_ON(engine->id >= ARRAY_SIZE(gtiir));
+
+	/*
+	 * Clear any pending interrupt state.
+	 *
+	 * We do it twice out of paranoia that some of the IIR are double
+	 * buffered, and if we only reset it once there may still be
+	 * an interrupt pending.
+	 */
+	I915_WRITE(GEN8_GT_IIR(gtiir[engine->id]),
+		   GT_CONTEXT_SWITCH_INTERRUPT << engine->irq_shift);
+	I915_WRITE(GEN8_GT_IIR(gtiir[engine->id]),
+		   GT_CONTEXT_SWITCH_INTERRUPT << engine->irq_shift);
 	clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
 
+	/* After a GPU reset, we may have requests to replay */
 	submit = false;
 	for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++) {
 		if (!port_isset(&port[n]))

drivers/gpu/drm/i915/intel_lspcon.c

@@ -210,8 +210,8 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
 	struct drm_device *dev = intel_dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
-	if (!IS_GEN9(dev_priv)) {
-		DRM_ERROR("LSPCON is supported on GEN9 only\n");
+	if (!HAS_LSPCON(dev_priv)) {
+		DRM_ERROR("LSPCON is not supported on this platform\n");
 		return false;
 	}
 

drivers/gpu/drm/imx/ipuv3-plane.c

@@ -545,15 +545,13 @@ static void ipu_plane_atomic_update(struct drm_plane *plane,
 		return;
 	}
 
+	ics = ipu_drm_fourcc_to_colorspace(fb->format->format);
 	switch (ipu_plane->dp_flow) {
 	case IPU_DP_FLOW_SYNC_BG:
-		ipu_dp_setup_channel(ipu_plane->dp,
-					IPUV3_COLORSPACE_RGB,
-					IPUV3_COLORSPACE_RGB);
+		ipu_dp_setup_channel(ipu_plane->dp, ics, IPUV3_COLORSPACE_RGB);
 		ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 		break;
 	case IPU_DP_FLOW_SYNC_FG:
-		ics = ipu_drm_fourcc_to_colorspace(state->fb->format->format);
 		ipu_dp_setup_channel(ipu_plane->dp, ics,
 					IPUV3_COLORSPACE_UNKNOWN);
 		/* Enable local alpha on partial plane */

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

@@ -275,11 +275,15 @@ static void rockchip_drm_fb_resume(struct drm_device *drm)
 static int rockchip_drm_sys_suspend(struct device *dev)
 {
 	struct drm_device *drm = dev_get_drvdata(dev);
-	struct rockchip_drm_private *priv = drm->dev_private;
+	struct rockchip_drm_private *priv;
+
+	if (!drm)
+		return 0;
 
 	drm_kms_helper_poll_disable(drm);
 	rockchip_drm_fb_suspend(drm);
 
+	priv = drm->dev_private;
 	priv->state = drm_atomic_helper_suspend(drm);
 	if (IS_ERR(priv->state)) {
 		rockchip_drm_fb_resume(drm);
@@ -293,8 +297,12 @@ static int rockchip_drm_sys_suspend(struct device *dev)
 static int rockchip_drm_sys_resume(struct device *dev)
 {
 	struct drm_device *drm = dev_get_drvdata(dev);
-	struct rockchip_drm_private *priv = drm->dev_private;
+	struct rockchip_drm_private *priv;
 
+	if (!drm)
+		return 0;
+
+	priv = drm->dev_private;
 	drm_atomic_helper_resume(drm, priv->state);
 	rockchip_drm_fb_resume(drm);
 	drm_kms_helper_poll_enable(drm);

drivers/gpu/drm/sun4i/sun4i_drv.c

@@ -25,12 +25,20 @@
 #include "sun4i_framebuffer.h"
 #include "sun4i_tcon.h"
 
+static void sun4i_drv_lastclose(struct drm_device *dev)
+{
+	struct sun4i_drv *drv = dev->dev_private;
+
+	drm_fbdev_cma_restore_mode(drv->fbdev);
+}
+
 DEFINE_DRM_GEM_CMA_FOPS(sun4i_drv_fops);
 
 static struct drm_driver sun4i_drv_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
 
 	/* Generic Operations */
+	.lastclose		= sun4i_drv_lastclose,
 	.fops			= &sun4i_drv_fops,
 	.name			= "sun4i-drm",
 	.desc			= "Allwinner sun4i Display Engine",

drivers/gpu/ipu-v3/Kconfig

@@ -1,6 +1,7 @@
 config IMX_IPUV3_CORE
 	tristate "IPUv3 core support"
 	depends on SOC_IMX5 || SOC_IMX6Q || ARCH_MULTIPLATFORM
+	depends on DRM || !DRM # if DRM=m, this can't be 'y'
 	select GENERIC_IRQ_CHIP
 	help
 	  Choose this if you have a i.MX5/6 system and want to use the Image