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drm/i915/dp: Retry DPCD fetch on G4X too

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Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Adam Jackson 2011-07-12 17:38:04 -04:00 committed by Keith Packard
parent ac66ae8346
commit 71ba9000e6
1 changed files with 15 additions and 18 deletions
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33
drivers/gpu/drm/i915/intel_dp.c
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@ -1595,11 +1595,23 @@ intel_dp_check_link_status(struct intel_dp *intel_dp)
}
}
static enum drm_connector_status
i915_dp_detect_common(struct intel_dp *intel_dp)
{
enum drm_connector_status status = connector_status_disconnected;
if (intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd,
sizeof (intel_dp->dpcd)) &&
(intel_dp->dpcd[DP_DPCD_REV] != 0))
status = connector_status_connected;
return status;
}
static enum drm_connector_status
ironlake_dp_detect(struct intel_dp *intel_dp)
{
enum drm_connector_status status;
bool ret;
/* Can't disconnect eDP, but you can close the lid... */
if (is_edp(intel_dp)) {
@ -1609,13 +1621,7 @@ ironlake_dp_detect(struct intel_dp *intel_dp)
return status;
}
status = connector_status_disconnected;
ret = intel_dp_aux_native_read_retry(intel_dp,
0x000, intel_dp->dpcd,
sizeof (intel_dp->dpcd));
if (ret && intel_dp->dpcd[DP_DPCD_REV] != 0)
status = connector_status_connected;
return status;
return i915_dp_detect_common(intel_dp);
}
static enum drm_connector_status
@ -1623,7 +1629,6 @@ g4x_dp_detect(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum drm_connector_status status;
uint32_t temp, bit;
switch (intel_dp->output_reg) {
@ -1645,15 +1650,7 @@ g4x_dp_detect(struct intel_dp *intel_dp)
if ((temp & bit) == 0)
return connector_status_disconnected;
status = connector_status_disconnected;
if (intel_dp_aux_native_read(intel_dp, 0x000, intel_dp->dpcd,
sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd))
{
if (intel_dp->dpcd[DP_DPCD_REV] != 0)
status = connector_status_connected;
}
return status;
return i915_dp_detect_common(intel_dp);
}
/**