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authorChris Wilson <chris@chris-wilson.co.uk>2010-11-24 17:37:17 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2010-11-24 17:37:17 +0000
commitba84cd1f2b5dd49bda9300c5a11373f7e14c3c66 (patch)
tree45b7fe1c0c146ad1b995dd95399c0d5614e920c4 /drivers/gpu
parentcc840f77036fa0a141951967cd010014f088b5e0 (diff)
drm/i915/sdvo: Always add a 30ms delay to make SDVO TV detection reliable
Commit d09c23de intended to add a 30ms delay to give the ADD time to detect any TVs connected. However, it used the sdvo->is_tv flag to do so which is dependent upon the previous detection result and not whether the output supports TVs. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/intel_sdvo.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index bf643100dec..d97e6cb52d3 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1377,10 +1377,12 @@ intel_sdvo_detect(struct drm_connector *connector, bool force)
if (!intel_sdvo_write_cmd(intel_sdvo,
SDVO_CMD_GET_ATTACHED_DISPLAYS, NULL, 0))
return connector_status_unknown;
- if (intel_sdvo->is_tv) {
- /* add 30ms delay when the output type is SDVO-TV */
+
+ /* add 30ms delay when the output type might be TV */
+ if (intel_sdvo->caps.output_flags &
+ (SDVO_OUTPUT_SVID0 | SDVO_OUTPUT_CVBS0))
mdelay(30);
- }
+
if (!intel_sdvo_read_response(intel_sdvo, &response, 2))
return connector_status_unknown;