From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 30 May 2016 00:36:02 +0000 (+1000)
Subject: drm/nouveau/top: add function to lookup interrupt mask for a given device
X-Git-Tag: v4.8-rc1~62^2~22^2~95
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3560e1703f4f7605da203561bad0e231706b93bd;p=karo-tx-linux.git

drm/nouveau/top: add function to lookup interrupt mask for a given device

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/top.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/top.h
index 5f75a66bfdbf..71ebbfd4484f 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/top.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/top.h
@@ -10,6 +10,7 @@ struct nvkm_top {
 
 u32 nvkm_top_reset(struct nvkm_device *, enum nvkm_devidx);
 u32 nvkm_top_intr(struct nvkm_device *, u32 intr, u64 *subdevs);
+u32 nvkm_top_intr_mask(struct nvkm_device *, enum nvkm_devidx);
 enum nvkm_devidx nvkm_top_fault(struct nvkm_device *, int fault);
 enum nvkm_devidx nvkm_top_engine(struct nvkm_device *, int, int *runl, int *engn);
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c
index 19fbcfdb08e8..fe063d5728e2 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/top/base.c
@@ -56,6 +56,22 @@ nvkm_top_reset(struct nvkm_device *device, enum nvkm_devidx index)
 	return 0;
 }
 
+u32
+nvkm_top_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx)
+{
+	struct nvkm_top *top = device->top;
+	struct nvkm_top_device *info;
+
+	if (top) {
+		list_for_each_entry(info, &top->device, head) {
+			if (info->index == devidx && info->intr >= 0)
+				return BIT(info->intr);
+		}
+	}
+
+	return 0;
+}
+
 u32
 nvkm_top_intr(struct nvkm_device *device, u32 intr, u64 *psubdevs)
 {