diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_pm.c | 75 |
1 files changed, 34 insertions, 41 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index a8d162c6f82..02281269a88 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -151,6 +151,7 @@ static void radeon_sync_with_vblank(struct radeon_device *rdev) static void radeon_set_power_state(struct radeon_device *rdev) { u32 sclk, mclk; + bool misc_after = false; if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) && (rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index)) @@ -167,55 +168,47 @@ static void radeon_set_power_state(struct radeon_device *rdev) if (mclk > rdev->clock.default_mclk) mclk = rdev->clock.default_mclk; - /* voltage, pcie lanes, etc.*/ - radeon_pm_misc(rdev); + /* upvolt before raising clocks, downvolt after lowering clocks */ + if (sclk < rdev->pm.current_sclk) + misc_after = true; - if (rdev->pm.pm_method == PM_METHOD_DYNPM) { - radeon_sync_with_vblank(rdev); + radeon_sync_with_vblank(rdev); + if (rdev->pm.pm_method == PM_METHOD_DYNPM) { if (!radeon_pm_in_vbl(rdev)) return; + } - radeon_pm_prepare(rdev); - /* set engine clock */ - if (sclk != rdev->pm.current_sclk) { - radeon_pm_debug_check_in_vbl(rdev, false); - radeon_set_engine_clock(rdev, sclk); - radeon_pm_debug_check_in_vbl(rdev, true); - rdev->pm.current_sclk = sclk; - DRM_DEBUG("Setting: e: %d\n", sclk); - } + radeon_pm_prepare(rdev); - /* set memory clock */ - if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) { - radeon_pm_debug_check_in_vbl(rdev, false); - radeon_set_memory_clock(rdev, mclk); - radeon_pm_debug_check_in_vbl(rdev, true); - rdev->pm.current_mclk = mclk; - DRM_DEBUG("Setting: m: %d\n", mclk); - } - radeon_pm_finish(rdev); - } else { - /* set engine clock */ - if (sclk != rdev->pm.current_sclk) { - radeon_sync_with_vblank(rdev); - radeon_pm_prepare(rdev); - radeon_set_engine_clock(rdev, sclk); - radeon_pm_finish(rdev); - rdev->pm.current_sclk = sclk; - DRM_DEBUG("Setting: e: %d\n", sclk); - } - /* set memory clock */ - if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) { - radeon_sync_with_vblank(rdev); - radeon_pm_prepare(rdev); - radeon_set_memory_clock(rdev, mclk); - radeon_pm_finish(rdev); - rdev->pm.current_mclk = mclk; - DRM_DEBUG("Setting: m: %d\n", mclk); - } + if (!misc_after) + /* voltage, pcie lanes, etc.*/ + radeon_pm_misc(rdev); + + /* set engine clock */ + if (sclk != rdev->pm.current_sclk) { + radeon_pm_debug_check_in_vbl(rdev, false); + radeon_set_engine_clock(rdev, sclk); + radeon_pm_debug_check_in_vbl(rdev, true); + rdev->pm.current_sclk = sclk; + DRM_DEBUG("Setting: e: %d\n", sclk); + } + + /* set memory clock */ + if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) { + radeon_pm_debug_check_in_vbl(rdev, false); + radeon_set_memory_clock(rdev, mclk); + radeon_pm_debug_check_in_vbl(rdev, true); + rdev->pm.current_mclk = mclk; + DRM_DEBUG("Setting: m: %d\n", mclk); } + if (misc_after) + /* voltage, pcie lanes, etc.*/ + radeon_pm_misc(rdev); + + radeon_pm_finish(rdev); + rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index; rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index; } else |