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| author |   Alex Deucher <alexander.deucher@amd.com> | 2013-07-02 18:40:35 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-07-05 18:09:30 -0400 |
| commit | 8b5e6b7f0ec81f237d87cf9632309db9481c6fb5 (patch) | |
| tree | 2b0cfc0679841fe0afbe5ef24a0e11f0a8b26582 /drivers/gpu/drm/radeon/rv770_dpm.c | |
| parent | drm/radeon/dpm: add infrastructure to force performance levels (diff) | |
| download | linux-dev-8b5e6b7f0ec81f237d87cf9632309db9481c6fb5.tar.xz linux-dev-8b5e6b7f0ec81f237d87cf9632309db9481c6fb5.zip | |
drm/radeon/dpm: implement force performance levels for 7xx/eg/btc
Allows you to limit the selected power levels via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/rv770_dpm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rv770_dpm.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c index 9af464d48eaa..c3025de4f4e2 100644 --- a/drivers/gpu/drm/radeon/rv770_dpm.c +++ b/drivers/gpu/drm/radeon/rv770_dpm.c @@ -1471,14 +1471,30 @@ int rv770_restrict_performance_levels_before_switch(struct radeon_device *rdev) return 0; } -int rv770_unrestrict_performance_levels_after_switch(struct radeon_device *rdev) -{ - if (rv770_send_msg_to_smc(rdev, (PPSMC_Msg)(PPSMC_MSG_NoForcedLevel)) != PPSMC_Result_OK) - return -EINVAL; +int rv770_dpm_force_performance_level(struct radeon_device *rdev, + enum radeon_dpm_forced_level level) +{ + PPSMC_Msg msg; + + if (level == RADEON_DPM_FORCED_LEVEL_HIGH) { + if (rv770_send_msg_to_smc(rdev, PPSMC_MSG_ZeroLevelsDisabled) != PPSMC_Result_OK) + return -EINVAL; + msg = PPSMC_MSG_ForceHigh; + } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) { + if (rv770_send_msg_to_smc(rdev, PPSMC_MSG_NoForcedLevel) != PPSMC_Result_OK) + return -EINVAL; + msg = (PPSMC_Msg)(PPSMC_MSG_TwoLevelsDisabled); + } else { + if (rv770_send_msg_to_smc(rdev, PPSMC_MSG_NoForcedLevel) != PPSMC_Result_OK) + return -EINVAL; + msg = (PPSMC_Msg)(PPSMC_MSG_ZeroLevelsDisabled); + } - if (rv770_send_msg_to_smc(rdev, (PPSMC_Msg)(PPSMC_MSG_ZeroLevelsDisabled)) != PPSMC_Result_OK) + if (rv770_send_msg_to_smc(rdev, msg) != PPSMC_Result_OK) return -EINVAL; + rdev->pm.dpm.forced_level = level; + return 0; } @@ -2047,9 +2063,10 @@ int rv770_dpm_set_power_state(struct radeon_device *rdev) if (pi->dcodt) rv770_program_dcodt_after_state_switch(rdev, new_ps, old_ps); rv770_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps); - ret = rv770_unrestrict_performance_levels_after_switch(rdev); + + ret = rv770_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO); if (ret) { - DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n"); + DRM_ERROR("rv770_dpm_force_performance_level failed\n"); return ret; } |