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drm/radeon/SI: fix TDP adjustment in set_power_state 

Fixes hangs with DPM in some cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-06-27 19:37:12 -04:00
parent 728cf6bb4d
commit a144acbcfb
1 changed files with 32 additions and 37 deletions
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69
drivers/gpu/drm/radeon/si_dpm.c
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@ -5864,6 +5864,32 @@ int si_dpm_pre_set_power_state(struct radeon_device *rdev)
return 0;
}
static int si_power_control_set_level(struct radeon_device *rdev)
{
struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
int ret;
ret = si_restrict_performance_levels_before_switch(rdev);
if (ret)
return ret;
ret = si_halt_smc(rdev);
if (ret)
return ret;
ret = si_populate_smc_tdp_limits(rdev, new_ps);
if (ret)
return ret;
ret = si_populate_smc_tdp_limits_2(rdev, new_ps);
if (ret)
return ret;
ret = si_resume_smc(rdev);
if (ret)
return ret;
ret = si_set_sw_state(rdev);
if (ret)
return ret;
return 0;
}
int si_dpm_set_power_state(struct radeon_device *rdev)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
@ -5928,16 +5954,6 @@ int si_dpm_set_power_state(struct radeon_device *rdev)
}
si_set_pcie_lane_width_in_smc(rdev, new_ps, old_ps);
ret = si_populate_smc_tdp_limits(rdev, new_ps);
if (ret) {
DRM_ERROR("si_populate_smc_tdp_limits failed\n");
return ret;
}
ret = si_populate_smc_tdp_limits_2(rdev, new_ps);
if (ret) {
DRM_ERROR("si_populate_smc_tdp_limits_2 failed\n");
return ret;
}
ret = si_resume_smc(rdev);
if (ret) {
DRM_ERROR("si_resume_smc failed\n");
@ -5967,6 +5983,12 @@ int si_dpm_set_power_state(struct radeon_device *rdev)
return ret;
}
ret = si_power_control_set_level(rdev);
if (ret) {
DRM_ERROR("si_power_control_set_level failed\n");
return ret;
}
#if 0
/* XXX */
ret = si_unrestrict_performance_levels_after_switch(rdev);
@ -5979,33 +6001,6 @@ int si_dpm_set_power_state(struct radeon_device *rdev)
return 0;
}
int si_power_control_set_level(struct radeon_device *rdev)
{
struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
int ret;
ret = si_restrict_performance_levels_before_switch(rdev);
if (ret)
return ret;
ret = si_halt_smc(rdev);
if (ret)
return ret;
ret = si_populate_smc_tdp_limits(rdev, new_ps);
if (ret)
return ret;
ret = si_populate_smc_tdp_limits_2(rdev, new_ps);
if (ret)
return ret;
ret = si_resume_smc(rdev);
if (ret)
return ret;
ret = si_set_sw_state(rdev);
if (ret)
return ret;
return 0;
}
void si_dpm_post_set_power_state(struct radeon_device *rdev)
{
struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);