drm/amdgpu/swsmu: add interrupt work handler for smu11 parts

We need to schedule the smu AC/DC interrupt ack to avoid
potentially sleeping if the smu message mutex is contended.

Fixes: e1188aac ("drm/amdgpu/smu11: add support for SMU AC/DC interrupts")
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/inc/smu_v11_0.h

@@ -280,5 +280,7 @@ int smu_v11_0_gfx_ulv_control(struct smu_context *smu,
 int smu_v11_0_deep_sleep_control(struct smu_context *smu,
 				 bool enablement);
 
+void smu_v11_0_interrupt_work(struct smu_context *smu);
+
 #endif
 #endif

drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c

@@ -2388,6 +2388,7 @@ static const struct pptable_funcs arcturus_ppt_funcs = {
 	.gfx_ulv_control = smu_v11_0_gfx_ulv_control,
 	.deep_sleep_control = smu_v11_0_deep_sleep_control,
 	.get_fan_parameters = arcturus_get_fan_parameters,
+	.interrupt_work = smu_v11_0_interrupt_work,
 };
 
 void arcturus_set_ppt_funcs(struct smu_context *smu)

drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c

@@ -2755,6 +2755,7 @@ static const struct pptable_funcs navi10_ppt_funcs = {
 	.deep_sleep_control = smu_v11_0_deep_sleep_control,
 	.get_fan_parameters = navi10_get_fan_parameters,
 	.post_init = navi10_post_smu_init,
+	.interrupt_work = smu_v11_0_interrupt_work,
 };
 
 void navi10_set_ppt_funcs(struct smu_context *smu)

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

@@ -2784,6 +2784,7 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
 	.gfx_ulv_control = smu_v11_0_gfx_ulv_control,
 	.deep_sleep_control = smu_v11_0_deep_sleep_control,
 	.get_fan_parameters = sienna_cichlid_get_fan_parameters,
+	.interrupt_work = smu_v11_0_interrupt_work,
 };
 
 void sienna_cichlid_set_ppt_funcs(struct smu_context *smu)

drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c

@@ -955,6 +955,12 @@ static int smu_v11_0_process_pending_interrupt(struct smu_context *smu)
 	return ret;
 }
 
+void smu_v11_0_interrupt_work(struct smu_context *smu)
+{
+	if (smu_v11_0_ack_ac_dc_interrupt(smu))
+		dev_err(smu->adev->dev, "Ack AC/DC interrupt Failed!\n");
+}
+
 int smu_v11_0_enable_thermal_alert(struct smu_context *smu)
 {
 	int ret = 0;
@@ -1320,11 +1326,11 @@ static int smu_v11_0_irq_process(struct amdgpu_device *adev,
 			switch (ctxid) {
 			case 0x3:
 				dev_dbg(adev->dev, "Switched to AC mode!\n");
-				smu_v11_0_ack_ac_dc_interrupt(&adev->smu);
+				schedule_work(&smu->interrupt_work);
 				break;
 			case 0x4:
 				dev_dbg(adev->dev, "Switched to DC mode!\n");
-				smu_v11_0_ack_ac_dc_interrupt(&adev->smu);
+				schedule_work(&smu->interrupt_work);
 				break;
 			case 0x7:
 				/*