[PATCH 2/2] drm/radeon: only enable kv/kb dpm interrupts once v2

[Christian König]

From: Alex Deucher <alexander.deucher at amd.com>

Enable at init and disable on fini. Workaround for hardware problems.

v2 (chk): extend commit message

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Christian König <christian.koenig at amd.com>
Cc: stable at vger.kernel.org
---
 drivers/gpu/drm/radeon/cik.c    | 21 ---------------------
 drivers/gpu/drm/radeon/kv_dpm.c | 12 ++++++++++--
 2 files changed, 10 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 5594416..e6a4ba2 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -7373,7 +7373,6 @@ int cik_irq_set(struct radeon_device *rdev)
 	u32 hpd1, hpd2, hpd3, hpd4, hpd5, hpd6;
 	u32 grbm_int_cntl = 0;
 	u32 dma_cntl, dma_cntl1;
-	u32 thermal_int;
 
 	if (!rdev->irq.installed) {
 		WARN(1, "Can't enable IRQ/MSI because no handler is installed\n");
@@ -7403,13 +7402,6 @@ int cik_irq_set(struct radeon_device *rdev)
 
 	cp_m1p0 = RREG32(CP_ME1_PIPE0_INT_CNTL) & ~TIME_STAMP_INT_ENABLE;
 
-	if (rdev->flags & RADEON_IS_IGP)
-		thermal_int = RREG32_SMC(CG_THERMAL_INT_CTRL) &
-			~(THERM_INTH_MASK | THERM_INTL_MASK);
-	else
-		thermal_int = RREG32_SMC(CG_THERMAL_INT) &
-			~(THERM_INT_MASK_HIGH | THERM_INT_MASK_LOW);
-
 	/* enable CP interrupts on all rings */
 	if (atomic_read(&rdev->irq.ring_int[RADEON_RING_TYPE_GFX_INDEX])) {
 		DRM_DEBUG("cik_irq_set: sw int gfx\n");
@@ -7513,14 +7505,6 @@ int cik_irq_set(struct radeon_device *rdev)
 		hpd6 |= DC_HPDx_INT_EN;
 	}
 
-	if (rdev->irq.dpm_thermal) {
-		DRM_DEBUG("dpm thermal\n");
-		if (rdev->flags & RADEON_IS_IGP)
-			thermal_int |= THERM_INTH_MASK | THERM_INTL_MASK;
-		else
-			thermal_int |= THERM_INT_MASK_HIGH | THERM_INT_MASK_LOW;
-	}
-
 	WREG32(CP_INT_CNTL_RING0, cp_int_cntl);
 
 	WREG32(SDMA0_CNTL + SDMA0_REGISTER_OFFSET, dma_cntl);
@@ -7567,11 +7551,6 @@ int cik_irq_set(struct radeon_device *rdev)
 	WREG32(DC_HPD5_INT_CONTROL, hpd5);
 	WREG32(DC_HPD6_INT_CONTROL, hpd6);
 
-	if (rdev->flags & RADEON_IS_IGP)
-		WREG32_SMC(CG_THERMAL_INT_CTRL, thermal_int);
-	else
-		WREG32_SMC(CG_THERMAL_INT, thermal_int);
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index c5eb286..d316758 100644
--- a/drivers/gpu/drm/radeon/kv_dpm.c
+++ b/drivers/gpu/drm/radeon/kv_dpm.c
@@ -1272,6 +1272,7 @@ int kv_dpm_enable(struct radeon_device *rdev)
 int kv_dpm_late_enable(struct radeon_device *rdev)
 {
 	int ret = 0;
+	u32 thermal_int;
 
 	if (rdev->irq.installed &&
 	    r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) {
@@ -1280,8 +1281,9 @@ int kv_dpm_late_enable(struct radeon_device *rdev)
 			DRM_ERROR("kv_set_thermal_temperature_range failed\n");
 			return ret;
 		}
-		rdev->irq.dpm_thermal = true;
-		radeon_irq_set(rdev);
+		thermal_int = RREG32_SMC(CG_THERMAL_INT_CTRL);
+		thermal_int |= THERM_INTH_MASK | THERM_INTL_MASK;
+		WREG32_SMC(CG_THERMAL_INT_CTRL, thermal_int);
 	}
 
 	/* powerdown unused blocks for now */
@@ -1295,6 +1297,8 @@ int kv_dpm_late_enable(struct radeon_device *rdev)
 
 void kv_dpm_disable(struct radeon_device *rdev)
 {
+	u32 thermal_int;
+
 	kv_smc_bapm_enable(rdev, false);
 
 	if (rdev->family == CHIP_MULLINS)
@@ -1313,6 +1317,10 @@ void kv_dpm_disable(struct radeon_device *rdev)
 	kv_enable_ulv(rdev, false);
 	kv_reset_am(rdev);
 
+	thermal_int = RREG32_SMC(CG_THERMAL_INT_CTRL) &
+		~(THERM_INTH_MASK | THERM_INTL_MASK);
+	WREG32_SMC(CG_THERMAL_INT_CTRL, thermal_int);
+
 	kv_update_current_ps(rdev, rdev->pm.dpm.boot_ps);
 }
 
-- 
1.9.1