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| author | Zhao Yakui <yakui.zhao@intel.com> | 2009-11-06 15:39:56 +0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-12-01 10:33:12 -0800 |
| commit | d09c23de9f967a7b7dcee0ffc57222ddbd821aba (patch) | |
| tree | c08d66c9fc61fe8ea6bd7614466b1ed9d099c018 /drivers/gpu/drm/i915/intel_sdvo.c | |
| parent | 04b2d218001bdddb41b84c9f78d6bb3cd3b5b31c (diff) | |
| download | op-kernel-dev-d09c23de9f967a7b7dcee0ffc57222ddbd821aba.zip op-kernel-dev-d09c23de9f967a7b7dcee0ffc57222ddbd821aba.tar.gz | |
drm/i915: Add 30ms delay to make SDVO TV detection reliable.
Without this, on some boots the TV wouldn't be detected. Testing
showed 15ms to be insufficient.
https://bugs.freedesktop.org/show_bug.cgi?id=24290
https://bugs.freedesktop.org/show_bug.cgi?id=20785
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Yan Seiner <yan@seiner.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sdvo.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sdvo.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 55b8beb..dba5147 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1617,6 +1617,10 @@ static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connect intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ATTACHED_DISPLAYS, NULL, 0); + if (sdvo_priv->is_tv) { + /* add 30ms delay when the output type is SDVO-TV */ + mdelay(30); + } status = intel_sdvo_read_response(intel_output, &response, 2); DRM_DEBUG_KMS("SDVO response %d %d\n", response & 0xff, response >> 8); |
