From: Alex Deucher <alexander.deuc...@amd.com>
Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/radeon/radeon.h | 4 ++++
drivers/gpu/drm/radeon/radeon_pm.c | 11 +++++++++++
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 16c7d52..657d224 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1616,7 +1616,9 @@ struct radeon_asic {
void (*setup_asic)(struct radeon_device *rdev);
int (*enable)(struct radeon_device *rdev);
void (*disable)(struct radeon_device *rdev);
+ int (*pre_set_power_state)(struct radeon_device *rdev);
int (*set_power_state)(struct radeon_device *rdev);
+ void (*post_set_power_state)(struct radeon_device *rdev);
void (*display_configuration_changed)(struct radeon_device
*rdev);
void (*fini)(struct radeon_device *rdev);
u32 (*get_sclk)(struct radeon_device *rdev, bool low);
@@ -2326,7 +2328,9 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t
v);
#define radeon_dpm_setup_asic(rdev) rdev->asic->dpm.setup_asic((rdev))
#define radeon_dpm_enable(rdev) rdev->asic->dpm.enable((rdev))
#define radeon_dpm_disable(rdev) rdev->asic->dpm.disable((rdev))
+#define radeon_dpm_pre_set_power_state(rdev)
rdev->asic->dpm.pre_set_power_state((rdev))
#define radeon_dpm_set_power_state(rdev)
rdev->asic->dpm.set_power_state((rdev))
+#define radeon_dpm_post_set_power_state(rdev)
rdev->asic->dpm.post_set_power_state((rdev))
#define radeon_dpm_display_configuration_changed(rdev)
rdev->asic->dpm.display_configuration_changed((rdev))
#define radeon_dpm_fini(rdev) rdev->asic->dpm.fini((rdev))
#define radeon_dpm_get_sclk(rdev, l) rdev->asic->dpm.get_sclk((rdev), (l))
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c
b/drivers/gpu/drm/radeon/radeon_pm.c
index 01ff18b..a50efb0 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -703,6 +703,7 @@ static void radeon_dpm_change_power_state_locked(struct
radeon_device *rdev)
int i;
struct radeon_ps *ps;
enum radeon_pm_state_type dpm_state;
+ int ret;
/* if dpm init failed */
if (!rdev->pm.dpm_enabled)
@@ -769,6 +770,12 @@ static void radeon_dpm_change_power_state_locked(struct
radeon_device *rdev)
down_write(&rdev->pm.mclk_lock);
mutex_lock(&rdev->ring_lock);
+ if (rdev->asic->dpm.pre_set_power_state) {
+ ret = radeon_dpm_pre_set_power_state(rdev);
+ if (ret)
+ goto done;
+ }
+
/* update display watermarks based on new power state */
radeon_bandwidth_update(rdev);
/* update displays */
@@ -790,6 +797,10 @@ static void radeon_dpm_change_power_state_locked(struct
radeon_device *rdev)
/* update current power state */
rdev->pm.dpm.current_ps = rdev->pm.dpm.requested_ps;
+ if (rdev->asic->dpm.post_set_power_state)
+ radeon_dpm_post_set_power_state(rdev);
+
+done:
mutex_unlock(&rdev->ring_lock);
up_write(&rdev->pm.mclk_lock);
mutex_unlock(&rdev->ddev->struct_mutex);
--
1.7.7.5
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