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| author | Patrik Jakobsson <patrik.r.jakobsson@gmail.com> | 2013-04-07 14:35:50 (GMT) |
|---|---|---|
| committer | Patrik Jakobsson <patrik.r.jakobsson@gmail.com> | 2013-04-07 15:09:37 (GMT) |
| commit | 749387dc8d8270b279f27a0a794cdf4f4a4aa774 (patch) | |
| tree | af60d046754eed815c74952f2fa8129580aa6d04 /drivers/gpu/drm/gma500 | |
| parent | 888eef2e8c2d9fc2e6ccf58fb4a8f9f6d8ff9a22 (diff) | |
| download | linux-749387dc8d8270b279f27a0a794cdf4f4a4aa774.tar.xz | |
drm/gma500: Fix hibernation problems on sdvo encoders
The state of the SDVO chip is more difficult to save than the LVDS so we do a
full mode set on the crtc to get SDVO operational again. The SDVOB/C register is
also stored just in case we have special bits set in the future.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/gma500')
| -rw-r--r-- | drivers/gpu/drm/gma500/psb_intel_sdvo.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c index a4cc777a..cd1b407 100644 --- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c +++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c @@ -134,6 +134,9 @@ struct psb_intel_sdvo { /* Input timings for adjusted_mode */ struct psb_intel_sdvo_dtd input_dtd; + + /* Saved SDVO output states */ + uint32_t saveSDVO; /* Can be SDVOB or SDVOC depending on sdvo_reg */ }; struct psb_intel_sdvo_connector { @@ -1830,6 +1833,35 @@ done: #undef CHECK_PROPERTY } +static void psb_intel_sdvo_save(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct psb_intel_encoder *psb_intel_encoder = + psb_intel_attached_encoder(connector); + struct psb_intel_sdvo *sdvo = + to_psb_intel_sdvo(&psb_intel_encoder->base); + + sdvo->saveSDVO = REG_READ(sdvo->sdvo_reg); +} + +static void psb_intel_sdvo_restore(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_encoder *encoder = + &psb_intel_attached_encoder(connector)->base; + struct psb_intel_sdvo *sdvo = to_psb_intel_sdvo(encoder); + struct drm_crtc *crtc = encoder->crtc; + + REG_WRITE(sdvo->sdvo_reg, sdvo->saveSDVO); + + /* Force dpms on upon resume */ + psb_intel_sdvo_dpms(encoder, DRM_MODE_DPMS_ON); + + /* Force a full mode set on the crtc. We're supposed to have the + mode_config lock already. */ + drm_crtc_helper_set_mode(crtc, &crtc->mode, crtc->x, crtc->y, NULL); +} + static const struct drm_encoder_helper_funcs psb_intel_sdvo_helper_funcs = { .dpms = psb_intel_sdvo_dpms, .mode_fixup = psb_intel_sdvo_mode_fixup, @@ -1840,6 +1872,8 @@ static const struct drm_encoder_helper_funcs psb_intel_sdvo_helper_funcs = { static const struct drm_connector_funcs psb_intel_sdvo_connector_funcs = { .dpms = drm_helper_connector_dpms, + .save = psb_intel_sdvo_save, + .restore = psb_intel_sdvo_restore, .detect = psb_intel_sdvo_detect, .fill_modes = drm_helper_probe_single_connector_modes, .set_property = psb_intel_sdvo_set_property, |