drm/amdgpu: add irq domain support

Hardware blocks on the GPU like ACP generate interrupts in
the GPU interrupt controller, but are driven by a separate
driver.  Add an irq domain to the GPU driver so that
blocks like ACP can register a Linux interrupt.

Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
index bc751bfbcae2..c79638f8e732 100644
--- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
@@ -253,8 +253,14 @@ static void cz_ih_set_rptr(struct amdgpu_device *adev)
 static int cz_ih_early_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	int ret;
+
+	ret = amdgpu_irq_add_domain(adev);
+	if (ret)
+		return ret;
 
 	cz_ih_set_interrupt_funcs(adev);
+
 	return 0;
 }
 
@@ -278,6 +284,7 @@ static int cz_ih_sw_fini(void *handle)
 
 	amdgpu_irq_fini(adev);
 	amdgpu_ih_ring_fini(adev);
+	amdgpu_irq_remove_domain(adev);
 
 	return 0;
 }