diff options
| author |   Alex Deucher <alexdeucher@gmail.com> | 2010-11-02 05:26:48 +0000 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2010-11-09 13:37:47 +1000 |
| commit | a0ae5864d42b41c411368bd689462bf063c029c8 (patch) | |
| tree | c8a450cdf031f9d3b2450994451c2938ca1c716a /drivers/gpu | |
| parent | drivers/gpu/drm: Update WARN uses (diff) | |
| download | linux-dev-a0ae5864d42b41c411368bd689462bf063c029c8.tar.xz linux-dev-a0ae5864d42b41c411368bd689462bf063c029c8.zip | |
drm/radeon/kms: don't disable shared encoders on pre-DCE3 display blocks
The A/B links aren't independantly useable on these blocks so when
we disable the encoders, make sure to only disable the encoder when
there is no connector using it.
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=18564
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_encoders.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index ae58b6849a2e..b862be61c398 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -1547,6 +1547,23 @@ static void radeon_atom_encoder_disable(struct drm_encoder *encoder) struct radeon_device *rdev = dev->dev_private; struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); struct radeon_encoder_atom_dig *dig; + + /* check for pre-DCE3 cards with shared encoders; + * can't really use the links individually, so don't disable + * the encoder if it's in use by another connector + */ + if (!ASIC_IS_DCE3(rdev)) { + struct drm_encoder *other_encoder; + struct radeon_encoder *other_radeon_encoder; + + list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) { + other_radeon_encoder = to_radeon_encoder(other_encoder); + if ((radeon_encoder->encoder_id == other_radeon_encoder->encoder_id) && + drm_helper_encoder_in_use(other_encoder)) + goto disable_done; + } + } + radeon_atom_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); switch (radeon_encoder->encoder_id) { @@ -1586,6 +1603,7 @@ static void radeon_atom_encoder_disable(struct drm_encoder *encoder) break; } +disable_done: if (radeon_encoder_is_digital(encoder)) { if (atombios_get_encoder_mode(encoder) == ATOM_ENCODER_MODE_HDMI) r600_hdmi_disable(encoder); |