diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-06-07 18:15:18 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-06-08 09:35:53 +1000 |
| commit | 4d60173fc1b12b0c308f861620fe8e2a84f6e5da (patch) | |
| tree | dd42b72d50e0859e632b2e9ffd0b7c0961b7bf86 /drivers/gpu/drm/radeon/rv770.c | |
| parent | aa1df0f229829109e49d1dc493252fd94a7af2a1 (diff) | |
drm/radeon/kms/pm: track current voltage (v2)
track the current voltage level and avoid setting it
if the requested voltage is already set.
v2: check voltage type before checking current voltage
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/rv770.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rv770.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index 33952da6534..7bde6eecf8c 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -48,8 +48,13 @@ void rv770_pm_misc(struct radeon_device *rdev) struct radeon_power_state *ps = &rdev->pm.power_state[requested_index]; struct radeon_voltage *voltage = &ps->clock_info[0].voltage; - if ((voltage->type == VOLTAGE_SW) && voltage->voltage) - radeon_atom_set_voltage(rdev, voltage->voltage); + + if ((voltage->type == VOLTAGE_SW) && voltage->voltage) { + if (voltage->voltage != rdev->pm.current_vddc) { + radeon_atom_set_voltage(rdev, voltage->voltage); + rdev->pm.current_vddc = voltage->voltage; + } + } } /* |