From 9d1a903d4ba1033b811ded8d3e5d0f01eeeaaa1d Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 14 Sep 2010 17:58:19 +0100 Subject: [PATCH] drm/i915/sdvo: Tidy intel_sdvo_hdmi_sink_detect Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/intel_sdvo.c | 55 ++++++++++++++----------------- 1 file 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; } -- 2.20.1