Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [6/223] drm/radeon/kms: don't disable shared encoders on pre-DCE3 display blocks | Date | Mon, 13 Dec 2010 00:45:01 +0100 (CET) |
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2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------ From: Alex Deucher <alexdeucher@gmail.com>
commit a0ae5864d42b41c411368bd689462bf063c029c8 upstream.
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> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
--- drivers/gpu/drm/radeon/radeon_encoders.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
Index: linux/drivers/gpu/drm/radeon/radeon_encoders.c =================================================================== --- linux.orig/drivers/gpu/drm/radeon/radeon_encoders.c +++ linux/drivers/gpu/drm/radeon/radeon_encoders.c @@ -1545,6 +1545,23 @@ static void radeon_atom_encoder_disable( 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) { @@ -1584,6 +1601,7 @@ static void radeon_atom_encoder_disable( break; } +disable_done: if (radeon_encoder_is_digital(encoder)) { if (atombios_get_encoder_mode(encoder) == ATOM_ENCODER_MODE_HDMI) r600_hdmi_disable(encoder);
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