summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/i915/intel_sdvo.c
diff options
context:
space:
mode:
authorChris Wilson <chris@chris-wilson.co.uk>2010-09-14 17:58:19 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2010-09-14 21:13:11 +0100
commit9d1a903d4ba1033b811ded8d3e5d0f01eeeaaa1d (patch)
treefd9413c527d95eddbe7421624d144440a2a6d278 /drivers/gpu/drm/i915/intel_sdvo.c
parent2b6efaa47615b29e572d7fc444565db62ca9bcf7 (diff)
drm/i915/sdvo: Tidy intel_sdvo_hdmi_sink_detect
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sdvo.c')
-rw-r--r--drivers/gpu/drm/i915/intel_sdvo.c55
1 files changed, 24 insertions, 31 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 0e68f9622565..05f5313e14a6 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1417,60 +1417,53 @@ enum drm_connector_status
intel_sdvo_hdmi_sink_detect(struct drm_connector *connector)
{
struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
- struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector);
- enum drm_connector_status status = connector_status_connected;
- struct edid *edid = NULL;
+ enum drm_connector_status status;
+ struct edid *edid;
edid = drm_get_edid(connector, intel_sdvo->base.ddc_bus);
- /* This is only applied to SDVO cards with multiple outputs */
if (edid == NULL && intel_sdvo_multifunc_encoder(intel_sdvo)) {
- uint8_t saved_ddc, temp_ddc;
- saved_ddc = intel_sdvo->ddc_bus;
- temp_ddc = intel_sdvo->ddc_bus >> 1;
+ u8 saved_ddc = intel_sdvo->ddc_bus, ddc;
+
/*
* Don't use the 1 as the argument of DDC bus switch to get
* the EDID. It is used for SDVO SPD ROM.
*/
- while(temp_ddc > 1) {
- intel_sdvo->ddc_bus = temp_ddc;
+ for (ddc = intel_sdvo->ddc_bus >> 1; ddc > 1; ddc >>= 1) {
+ intel_sdvo->ddc_bus = ddc;
edid = drm_get_edid(connector, intel_sdvo->base.ddc_bus);
- if (edid) {
- /*
- * When we can get the EDID, maybe it is the
- * correct DDC bus. Update it.
- */
- intel_sdvo->ddc_bus = temp_ddc;
+ if (edid)
break;
- }
- temp_ddc >>= 1;
}
+
+ /*
+ * If we found the EDID on the other bus, maybe that is the
+ * correct DDC bus.
+ */
if (edid == NULL)
intel_sdvo->ddc_bus = saved_ddc;
}
- /* when there is no edid and no monitor is connected with VGA
- * port, try to use the CRT ddc to read the EDID for DVI-connector
+
+ /*
+ * When there is no edid and no monitor is connected with VGA
+ * port, try to use the CRT ddc to read the EDID for DVI-connector.
*/
- if (edid == NULL && intel_sdvo->analog_ddc_bus &&
+ if (edid == NULL &&
+ intel_sdvo->analog_ddc_bus &&
!intel_analog_is_connected(connector->dev))
edid = drm_get_edid(connector, intel_sdvo->analog_ddc_bus);
+ status = connector_status_disconnected;
if (edid != NULL) {
- bool is_digital = !!(edid->input & DRM_EDID_INPUT_DIGITAL);
- bool need_digital = !!(intel_sdvo_connector->output_flag & SDVO_TMDS_MASK);
-
/* DDC bus is shared, match EDID to connector type */
- if (is_digital && need_digital)
+ if (edid->input & DRM_EDID_INPUT_DIGITAL) {
+ status = connector_status_connected;
intel_sdvo->is_hdmi = drm_detect_hdmi_monitor(edid);
- else if (is_digital != need_digital)
- status = connector_status_disconnected;
-
+ }
connector->display_info.raw_edid = NULL;
- } else
- status = connector_status_disconnected;
+ kfree(edid);
+ }
- kfree(edid);
-
return status;
}