Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for 4.5.  I don't think I've missed
  anything too major, I'm mostly back at work now but I'll probably get
  some sleep in 5 years time.

  Summary:

  New drivers:
   - etnaviv:

     GPU driver for the 3D core on the Vivante core used in numerous
     ARM boards.

  Highlights:

  Core:
   - Atomic suspend/resume helpers
   - Move the headers to using userspace friendlier types.
   - Documentation updates
   - Lots of struct_mutex removal.
   - Bunch of DP MST fixes from AMD.

  Panel:
   - More DSI helpers
   - Support for some new basic panels

  i915:
   - Basic Kabylake support
   - DP link training and detect code refactoring
   - fbc/psr fixes
   - FIFO underrun fixes
   - SDE interrupt handling fixes
   - dma-buf/fence support in pageflip path.
   - GPU side for MST audio support

  radeon/amdgpu:
   - Drop UMS support
   - GPUVM/Scheduler optimisations
   - Initial Powerplay support for Tonga/Fiji/CZ/ST
   - ACP audio prerequisites

  nouveau:
   - GK20a instmem improvements
   - PCIE link speed change support

  msm:
   - DSI support for msm8960/apq8064

  tegra:
   - Host1X support for Tegra210 SoC

  vc4:
   - 3D acceleration support

  armada:
   - Get rid of struct mutex

  tda998x:
   - Atomic modesetting support
   - TMDS clock limitations

  omapdrm:
   - Atomic modesetting support
   - improved TILER performance

  rockchip:
   - RK3036 VOP support
   - Atomic modesetting support
   - Synopsys DW MIPI DSI support

  exynos:
   - Runtime PM support
   - of_graph binding for DP panels
   - Cleanup of IPP code
   - Configurable plane support
   - Kernel panic fixes at release time"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (711 commits)
  drm/fb_cma_helper: Remove implicit call to disable_unused_functions
  drm/amdgpu: add missing irq.h include
  drm/vmwgfx: Fix a width / pitch mismatch on framebuffer updates
  drm/vmwgfx: Fix an incorrect lock check
  drm: nouveau: fix nouveau_debugfs_init prototype
  drm/nouveau/pci: fix check in nvkm_pcie_set_link
  drm/amdgpu: validate duplicates first
  drm/amdgpu: move VM page tables to the LRU end on CS v2
  drm/ttm: add ttm_bo_move_to_lru_tail function v2
  drm/ttm: fix adding foreign BOs to the swap LRU
  drm/ttm: fix adding foreign BOs to the LRU during init v2
  drm/radeon: use kobj_to_dev()
  drm/amdgpu: use kobj_to_dev()
  drm/amdgpu/cz: force vce clocks when sclks are forced
  drm/amdgpu/cz: force uvd clocks when sclks are forced
  drm/amdgpu/cz: add code to enable forcing VCE clocks
  drm/amdgpu/cz: add code to enable forcing UVD clocks
  drm/amdgpu: fix lost sync_to if scheduler is enabled.
  drm/amd/powerplay: fix static checker warning for return meaningless value.
  drm/sysfs: use kobj_to_dev()
  ...

1 files changed, 101 insertions, 8 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index 7c42ff670080..f594cfaa97e5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -25,6 +25,7 @@
  *          Alex Deucher
  *          Jerome Glisse
  */
+#include <linux/irq.h>
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/amdgpu_drm.h>
@@ -312,6 +313,7 @@ int amdgpu_irq_add_id(struct amdgpu_device *adev, unsigned src_id,
 	}
 
 	adev->irq.sources[src_id] = source;
+
 	return 0;
 }
 
@@ -335,15 +337,19 @@ void amdgpu_irq_dispatch(struct amdgpu_device *adev,
 		return;
 	}
 
-	src = adev->irq.sources[src_id];
-	if (!src) {
-		DRM_DEBUG("Unhandled interrupt src_id: %d\n", src_id);
-		return;
-	}
+	if (adev->irq.virq[src_id]) {
+		generic_handle_irq(irq_find_mapping(adev->irq.domain, src_id));
+	} else {
+		src = adev->irq.sources[src_id];
+		if (!src) {
+			DRM_DEBUG("Unhandled interrupt src_id: %d\n", src_id);
+			return;
+		}
 
-	r = src->funcs->process(adev, src, entry);
-	if (r)
-		DRM_ERROR("error processing interrupt (%d)\n", r);
+		r = src->funcs->process(adev, src, entry);
+		if (r)
+			DRM_ERROR("error processing interrupt (%d)\n", r);
+	}
 }
 
 /**
@@ -461,3 +467,90 @@ bool amdgpu_irq_enabled(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
 
 	return !!atomic_read(&src->enabled_types[type]);
 }
+
+/* gen irq */
+static void amdgpu_irq_mask(struct irq_data *irqd)
+{
+	/* XXX */
+}
+
+static void amdgpu_irq_unmask(struct irq_data *irqd)
+{
+	/* XXX */
+}
+
+static struct irq_chip amdgpu_irq_chip = {
+	.name = "amdgpu-ih",
+	.irq_mask = amdgpu_irq_mask,
+	.irq_unmask = amdgpu_irq_unmask,
+};
+
+static int amdgpu_irqdomain_map(struct irq_domain *d,
+				unsigned int irq, irq_hw_number_t hwirq)
+{
+	if (hwirq >= AMDGPU_MAX_IRQ_SRC_ID)
+		return -EPERM;
+
+	irq_set_chip_and_handler(irq,
+				 &amdgpu_irq_chip, handle_simple_irq);
+	return 0;
+}
+
+static struct irq_domain_ops amdgpu_hw_irqdomain_ops = {
+	.map = amdgpu_irqdomain_map,
+};
+
+/**
+ * amdgpu_irq_add_domain - create a linear irq domain
+ *
+ * @adev: amdgpu device pointer
+ *
+ * Create an irq domain for GPU interrupt sources
+ * that may be driven by another driver (e.g., ACP).
+ */
+int amdgpu_irq_add_domain(struct amdgpu_device *adev)
+{
+	adev->irq.domain = irq_domain_add_linear(NULL, AMDGPU_MAX_IRQ_SRC_ID,
+						 &amdgpu_hw_irqdomain_ops, adev);
+	if (!adev->irq.domain) {
+		DRM_ERROR("GPU irq add domain failed\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/**
+ * amdgpu_irq_remove_domain - remove the irq domain
+ *
+ * @adev: amdgpu device pointer
+ *
+ * Remove the irq domain for GPU interrupt sources
+ * that may be driven by another driver (e.g., ACP).
+ */
+void amdgpu_irq_remove_domain(struct amdgpu_device *adev)
+{
+	if (adev->irq.domain) {
+		irq_domain_remove(adev->irq.domain);
+		adev->irq.domain = NULL;
+	}
+}
+
+/**
+ * amdgpu_irq_create_mapping - create a mapping between a domain irq and a
+ *                             Linux irq
+ *
+ * @adev: amdgpu device pointer
+ * @src_id: IH source id
+ *
+ * Create a mapping between a domain irq (GPU IH src id) and a Linux irq
+ * Use this for components that generate a GPU interrupt, but are driven
+ * by a different driver (e.g., ACP).
+ * Returns the Linux irq.
+ */
+unsigned amdgpu_irq_create_mapping(struct amdgpu_device *adev, unsigned src_id)
+{
+	adev->irq.virq[src_id] = irq_create_mapping(adev->irq.domain, src_id);
+
+	return adev->irq.virq[src_id];
+}