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drm/radeon/dpm: add new pre/post_set_power_state callbacks

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Needed to properly handle dynamic state adjustment.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-01-16 12:52:04 -05:00
parent 940eea8e4d
commit 84dd192826
2 changed files with 15 additions and 0 deletions
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4
drivers/gpu/drm/radeon/radeon.h
View file

@ -1615,7 +1615,9 @@ 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);
@ -2328,7 +2330,9 @@ 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))

11
drivers/gpu/drm/radeon/radeon_pm.c
View file

@ -700,6 +700,7 @@ 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)
@ -766,6 +767,12 @@ 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 */
@ -787,6 +794,10 @@ 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);