diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-04-23 17:57:27 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-05-18 18:21:12 +1000 |
| commit | 49e02b7306cb7e01965fe5f41ba0f80085142f6e (patch) | |
| tree | 6faaa8069fae9b4768d727274df94c2a5298b1b2 /drivers/gpu/drm/radeon/evergreen.c | |
| parent | 58e21dff53b9063563e7bb5f5a795ab2d8f61dda (diff) | |
drm/radeon/kms/pm: add additional asic callbacks
- pm_misc() - handles voltage, pcie lanes, and other non
clock related power mode settings. Currently disabled.
Needs further debugging
- pm_prepare() - disables crtc mem requests right now.
All memory clients need to be disabled when changing
memory clocks. This function can be expanded to include
disabling fb access as well.
- pm_finish() - enable active memory clients.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 0137a4cd90f5..8d86d0568d97 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -39,6 +39,47 @@ static void evergreen_gpu_init(struct radeon_device *rdev); void evergreen_fini(struct radeon_device *rdev); +void evergreen_pm_misc(struct radeon_device *rdev) +{ + +} + +void evergreen_pm_prepare(struct radeon_device *rdev) +{ + struct drm_device *ddev = rdev->ddev; + struct drm_crtc *crtc; + struct radeon_crtc *radeon_crtc; + u32 tmp; + + /* disable any active CRTCs */ + list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) { + radeon_crtc = to_radeon_crtc(crtc); + if (radeon_crtc->enabled) { + tmp = RREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset); + tmp |= EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE; + WREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset, tmp); + } + } +} + +void evergreen_pm_finish(struct radeon_device *rdev) +{ + struct drm_device *ddev = rdev->ddev; + struct drm_crtc *crtc; + struct radeon_crtc *radeon_crtc; + u32 tmp; + + /* enable any active CRTCs */ + list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) { + radeon_crtc = to_radeon_crtc(crtc); + if (radeon_crtc->enabled) { + tmp = RREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset); + tmp &= ~EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE; + WREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset, tmp); + } + } +} + bool evergreen_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd) { bool connected = false; |