Merge tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for v4.11.

  Nothing too major, the tinydrm and mmu-less support should make
  writing smaller drivers easier for some of the simpler platforms, and
  there are a bunch of documentation updates.

  Intel grew displayport MST audio support which is hopefully useful to
  people, and FBC is on by default for GEN9+ (so people know where to
  look for regressions). AMDGPU has a lot of fixes that would like new
  firmware files installed for some GPUs.

  Other than that it's pretty scattered all over.

  I may have a follow up pull request as I know BenH has a bunch of AST
  rework and fixes and I'd like to get those in once they've been tested
  by AST, and I've got at least one pull request I'm just trying to get
  the author to fix up.

  Core:
   - drm_mm reworked
   - Connector list locking and iterators
   - Documentation updates
   - Format handling rework
   - MMU-less support for fbdev helpers
   - drm_crtc_from_index helper
   - Core CRC API
   - Remove drm_framebuffer_unregister_private
   - Debugfs cleanup
   - EDID/Infoframe fixes
   - Release callback
   - Tinydrm support (smaller drivers for simple hw)

  panel:
   - Add support for some new simple panels

  i915:
   - FBC by default for gen9+
   - Shared dpll cleanups and docs
   - GEN8 powerdomain cleanup
   - DMC support on GLK
   - DP MST audio support
   - HuC loading support
   - GVT init ordering fixes
   - GVT IOMMU workaround fix

  amdgpu/radeon:
   - Power/clockgating improvements
   - Preliminary SR-IOV support
   - TTM buffer priority and eviction fixes
   - SI DPM quirks removed due to firmware fixes
   - Powerplay improvements
   - VCE/UVD powergating fixes
   - Cleanup SI GFX code to match CI/VI
   - Support for > 2 displays on 3/5 crtc asics
   - SI headless fixes

  nouveau:
   - Rework securre boot code in prep for GP10x secure boot
   - Channel recovery improvements
   - Initial power budget code
   - MMU rework preperation

  vmwgfx:
   - Bunch of fixes and cleanups

  exynos:
   - Runtime PM support for MIC driver
   - Cleanups to use atomic helpers
   - UHD Support for TM2/TM2E boards
   - Trigger mode fix for Rinato board

  etnaviv:
   - Shader performance fix
   - Command stream validator fixes
   - Command buffer suballocator

  rockchip:
   - CDN DisplayPort support
   - IOMMU support for arm64 platform

  imx-drm:
   - Fix i.MX5 TV encoder probing
   - Remove lower fb size limits

  msm:
   - Support for HW cursor on MDP5 devices
   - DSI encoder cleanup
   - GPU DT bindings cleanup

  sti:
   - stih410 cleanups
   - Create fbdev at binding
   - HQVDP fixes
   - Remove stih416 chip functionality
   - DVI/HDMI mode selection fixes
   - FPS statistic reporting

  omapdrm:
   - IRQ code cleanup

  dwi-hdmi bridge:
   - Cleanups and fixes

  adv-bridge:
   - Updates for nexus

  sii8520 bridge:
   - Add interlace mode support
   - Rework HDMI and lots of fixes

  qxl:
   - probing/teardown cleanups

  ZTE drm:
   - HDMI audio via SPDIF interface
   - Video Layer overlay plane support
   - Add TV encoder output device

  atmel-hlcdc:
   - Rework fbdev creation logic

  tegra:
   - OF node fix

  fsl-dcu:
   - Minor fixes

  mali-dp:
   - Assorted fixes

  sunxi:
   - Minor fix"

[ This was the "fixed" pull, that still had build warnings due to people
  not even having build tested the result. I'm not a happy camper

  I've fixed the things I noticed up in this merge.      - Linus ]

* tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux: (1177 commits)
  lib/Kconfig: make PRIME_NUMBERS not user selectable
  drm/tinydrm: helpers: Properly fix backlight dependency
  drm/tinydrm: mipi-dbi: Fix field width specifier warning
  drm/tinydrm: mipi-dbi: Silence: ‘cmd’ may be used uninitialized
  drm/sti: fix build warnings in sti_drv.c and sti_vtg.c files
  drm/amd/powerplay: fix PSI feature on Polars12
  drm/amdgpu: refuse to reserve io mem for split VRAM buffers
  drm/ttm: fix use-after-free races in vm fault handling
  drm/tinydrm: Add support for Multi-Inno MI0283QT display
  dt-bindings: Add Multi-Inno MI0283QT binding
  dt-bindings: display/panel: Add common rotation property
  of: Add vendor prefix for Multi-Inno
  drm/tinydrm: Add MIPI DBI support
  drm/tinydrm: Add helper functions
  drm: Add DRM support for tiny LCD displays
  drm/amd/amdgpu: post card if there is real hw resetting performed
  drm/nouveau/tmr: provide backtrace when a timeout is hit
  drm/nouveau/pci/g92: Fix rearm
  drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios
  drm/nouveau/hwmon: expose power_max and power_crit
  ..

1 files changed, 133 insertions, 109 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_irq.c b/drivers/gpu/drm/omapdrm/omap_irq.c
index 60e1e8016708..9adfa7c99695 100644
--- a/drivers/gpu/drm/omapdrm/omap_irq.c
+++ b/drivers/gpu/drm/omapdrm/omap_irq.c
@@ -19,25 +19,24 @@
 
 #include "omap_drv.h"
 
-static DEFINE_SPINLOCK(list_lock);
-
-static void omap_irq_error_handler(struct omap_drm_irq *irq,
-		uint32_t irqstatus)
-{
-	DRM_ERROR("errors: %08x\n", irqstatus);
-}
+struct omap_irq_wait {
+	struct list_head node;
+	wait_queue_head_t wq;
+	uint32_t irqmask;
+	int count;
+};
 
-/* call with list_lock and dispc runtime held */
+/* call with wait_lock and dispc runtime held */
 static void omap_irq_update(struct drm_device *dev)
 {
 	struct omap_drm_private *priv = dev->dev_private;
-	struct omap_drm_irq *irq;
-	uint32_t irqmask = priv->vblank_mask;
+	struct omap_irq_wait *wait;
+	uint32_t irqmask = priv->irq_mask;
 
-	assert_spin_locked(&list_lock);
+	assert_spin_locked(&priv->wait_lock);
 
-	list_for_each_entry(irq, &priv->irq_list, node)
-		irqmask |= irq->irqmask;
+	list_for_each_entry(wait, &priv->wait_list, node)
+		irqmask |= wait->irqmask;
 
 	DBG("irqmask=%08x", irqmask);
 
@@ -45,90 +44,48 @@ static void omap_irq_update(struct drm_device *dev)
 	dispc_read_irqenable();        /* flush posted write */
 }
 
-void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq)
-{
-	struct omap_drm_private *priv = dev->dev_private;
-	unsigned long flags;
-
-	spin_lock_irqsave(&list_lock, flags);
-
-	if (!WARN_ON(irq->registered)) {
-		irq->registered = true;
-		list_add(&irq->node, &priv->irq_list);
-		omap_irq_update(dev);
-	}
-
-	spin_unlock_irqrestore(&list_lock, flags);
-}
-
-void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq)
-{
-	dispc_runtime_get();
-
-	__omap_irq_register(dev, irq);
-
-	dispc_runtime_put();
-}
-
-void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq)
+static void omap_irq_wait_handler(struct omap_irq_wait *wait)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&list_lock, flags);
-
-	if (!WARN_ON(!irq->registered)) {
-		irq->registered = false;
-		list_del(&irq->node);
-		omap_irq_update(dev);
-	}
-
-	spin_unlock_irqrestore(&list_lock, flags);
-}
-
-void omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq)
-{
-	dispc_runtime_get();
-
-	__omap_irq_unregister(dev, irq);
-
-	dispc_runtime_put();
-}
-
-struct omap_irq_wait {
-	struct omap_drm_irq irq;
-	int count;
-};
-
-static DECLARE_WAIT_QUEUE_HEAD(wait_event);
-
-static void wait_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
-{
-	struct omap_irq_wait *wait =
-			container_of(irq, struct omap_irq_wait, irq);
 	wait->count--;
-	wake_up_all(&wait_event);
+	wake_up(&wait->wq);
 }
 
 struct omap_irq_wait * omap_irq_wait_init(struct drm_device *dev,
 		uint32_t irqmask, int count)
 {
+	struct omap_drm_private *priv = dev->dev_private;
 	struct omap_irq_wait *wait = kzalloc(sizeof(*wait), GFP_KERNEL);
-	wait->irq.irq = wait_irq;
-	wait->irq.irqmask = irqmask;
+	unsigned long flags;
+
+	init_waitqueue_head(&wait->wq);
+	wait->irqmask = irqmask;
 	wait->count = count;
-	omap_irq_register(dev, &wait->irq);
+
+	spin_lock_irqsave(&priv->wait_lock, flags);
+	list_add(&wait->node, &priv->wait_list);
+	omap_irq_update(dev);
+	spin_unlock_irqrestore(&priv->wait_lock, flags);
+
 	return wait;
 }
 
 int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
 		unsigned long timeout)
 {
-	int ret = wait_event_timeout(wait_event, (wait->count <= 0), timeout);
-	omap_irq_unregister(dev, &wait->irq);
+	struct omap_drm_private *priv = dev->dev_private;
+	unsigned long flags;
+	int ret;
+
+	ret = wait_event_timeout(wait->wq, (wait->count <= 0), timeout);
+
+	spin_lock_irqsave(&priv->wait_lock, flags);
+	list_del(&wait->node);
+	omap_irq_update(dev);
+	spin_unlock_irqrestore(&priv->wait_lock, flags);
+
 	kfree(wait);
-	if (ret == 0)
-		return -1;
-	return 0;
+
+	return ret == 0 ? -1 : 0;
 }
 
 /**
@@ -152,10 +109,10 @@ int omap_irq_enable_vblank(struct drm_device *dev, unsigned int pipe)
 
 	DBG("dev=%p, crtc=%u", dev, pipe);
 
-	spin_lock_irqsave(&list_lock, flags);
-	priv->vblank_mask |= pipe2vbl(crtc);
+	spin_lock_irqsave(&priv->wait_lock, flags);
+	priv->irq_mask |= dispc_mgr_get_vsync_irq(omap_crtc_channel(crtc));
 	omap_irq_update(dev);
-	spin_unlock_irqrestore(&list_lock, flags);
+	spin_unlock_irqrestore(&priv->wait_lock, flags);
 
 	return 0;
 }
@@ -177,17 +134,66 @@ void omap_irq_disable_vblank(struct drm_device *dev, unsigned int pipe)
 
 	DBG("dev=%p, crtc=%u", dev, pipe);
 
-	spin_lock_irqsave(&list_lock, flags);
-	priv->vblank_mask &= ~pipe2vbl(crtc);
+	spin_lock_irqsave(&priv->wait_lock, flags);
+	priv->irq_mask &= ~dispc_mgr_get_vsync_irq(omap_crtc_channel(crtc));
 	omap_irq_update(dev);
-	spin_unlock_irqrestore(&list_lock, flags);
+	spin_unlock_irqrestore(&priv->wait_lock, flags);
+}
+
+static void omap_irq_fifo_underflow(struct omap_drm_private *priv,
+				    u32 irqstatus)
+{
+	static DEFINE_RATELIMIT_STATE(_rs, DEFAULT_RATELIMIT_INTERVAL,
+				      DEFAULT_RATELIMIT_BURST);
+	static const struct {
+		const char *name;
+		u32 mask;
+	} sources[] = {
+		{ "gfx", DISPC_IRQ_GFX_FIFO_UNDERFLOW },
+		{ "vid1", DISPC_IRQ_VID1_FIFO_UNDERFLOW },
+		{ "vid2", DISPC_IRQ_VID2_FIFO_UNDERFLOW },
+		{ "vid3", DISPC_IRQ_VID3_FIFO_UNDERFLOW },
+	};
+
+	const u32 mask = DISPC_IRQ_GFX_FIFO_UNDERFLOW
+		       | DISPC_IRQ_VID1_FIFO_UNDERFLOW
+		       | DISPC_IRQ_VID2_FIFO_UNDERFLOW
+		       | DISPC_IRQ_VID3_FIFO_UNDERFLOW;
+	unsigned int i;
+
+	spin_lock(&priv->wait_lock);
+	irqstatus &= priv->irq_mask & mask;
+	spin_unlock(&priv->wait_lock);
+
+	if (!irqstatus)
+		return;
+
+	if (!__ratelimit(&_rs))
+		return;
+
+	DRM_ERROR("FIFO underflow on ");
+
+	for (i = 0; i < ARRAY_SIZE(sources); ++i) {
+		if (sources[i].mask & irqstatus)
+			pr_cont("%s ", sources[i].name);
+	}
+
+	pr_cont("(0x%08x)\n", irqstatus);
+}
+
+static void omap_irq_ocp_error_handler(u32 irqstatus)
+{
+	if (!(irqstatus & DISPC_IRQ_OCP_ERR))
+		return;
+
+	DRM_ERROR("OCP error\n");
 }
 
 static irqreturn_t omap_irq_handler(int irq, void *arg)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	struct omap_drm_private *priv = dev->dev_private;
-	struct omap_drm_irq *handler, *n;
+	struct omap_irq_wait *wait, *n;
 	unsigned long flags;
 	unsigned int id;
 	u32 irqstatus;
@@ -200,24 +206,37 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
 
 	for (id = 0; id < priv->num_crtcs; id++) {
 		struct drm_crtc *crtc = priv->crtcs[id];
+		enum omap_channel channel = omap_crtc_channel(crtc);
 
-		if (irqstatus & pipe2vbl(crtc))
+		if (irqstatus & dispc_mgr_get_vsync_irq(channel)) {
 			drm_handle_vblank(dev, id);
+			omap_crtc_vblank_irq(crtc);
+		}
+
+		if (irqstatus & dispc_mgr_get_sync_lost_irq(channel))
+			omap_crtc_error_irq(crtc, irqstatus);
 	}
 
-	spin_lock_irqsave(&list_lock, flags);
-	list_for_each_entry_safe(handler, n, &priv->irq_list, node) {
-		if (handler->irqmask & irqstatus) {
-			spin_unlock_irqrestore(&list_lock, flags);
-			handler->irq(handler, handler->irqmask & irqstatus);
-			spin_lock_irqsave(&list_lock, flags);
-		}
+	omap_irq_ocp_error_handler(irqstatus);
+	omap_irq_fifo_underflow(priv, irqstatus);
+
+	spin_lock_irqsave(&priv->wait_lock, flags);
+	list_for_each_entry_safe(wait, n, &priv->wait_list, node) {
+		if (wait->irqmask & irqstatus)
+			omap_irq_wait_handler(wait);
 	}
-	spin_unlock_irqrestore(&list_lock, flags);
+	spin_unlock_irqrestore(&priv->wait_lock, flags);
 
 	return IRQ_HANDLED;
 }
 
+static const u32 omap_underflow_irqs[] = {
+	[OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
+	[OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
+	[OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
+	[OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
+};
+
 /*
  * We need a special version, instead of just using drm_irq_install(),
  * because we need to register the irq via omapdss.  Once omapdss and
@@ -228,10 +247,25 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
 int omap_drm_irq_install(struct drm_device *dev)
 {
 	struct omap_drm_private *priv = dev->dev_private;
-	struct omap_drm_irq *error_handler = &priv->error_handler;
+	unsigned int num_mgrs = dss_feat_get_num_mgrs();
+	unsigned int max_planes;
+	unsigned int i;
 	int ret;
 
-	INIT_LIST_HEAD(&priv->irq_list);
+	spin_lock_init(&priv->wait_lock);
+	INIT_LIST_HEAD(&priv->wait_list);
+
+	priv->irq_mask = DISPC_IRQ_OCP_ERR;
+
+	max_planes = min(ARRAY_SIZE(priv->planes),
+			 ARRAY_SIZE(omap_underflow_irqs));
+	for (i = 0; i < max_planes; ++i) {
+		if (priv->planes[i])
+			priv->irq_mask |= omap_underflow_irqs[i];
+	}
+
+	for (i = 0; i < num_mgrs; ++i)
+		priv->irq_mask |= dispc_mgr_get_sync_lost_irq(i);
 
 	dispc_runtime_get();
 	dispc_clear_irqstatus(0xffffffff);
@@ -241,16 +275,6 @@ int omap_drm_irq_install(struct drm_device *dev)
 	if (ret < 0)
 		return ret;
 
-	error_handler->irq = omap_irq_error_handler;
-	error_handler->irqmask = DISPC_IRQ_OCP_ERR;
-
-	/* for now ignore DISPC_IRQ_SYNC_LOST_DIGIT.. really I think
-	 * we just need to ignore it while enabling tv-out
-	 */
-	error_handler->irqmask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
-
-	omap_irq_register(dev, error_handler);
-
 	dev->irq_enabled = true;
 
 	return 0;