From 953ece69711bfc51c57ef3976c84594b2fadbcb3 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 2 Sep 2014 20:04:01 +0100 Subject: [PATCH] drm/i915/hdmi: Cache EDID for a detection cycle MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit As we may query the edid multiple times following a detect, record the EDID found during output discovery and reuse it. This is a separate issue from caching the output EDID across detection cycles. v2: Also hookup the force() callback for audio detection when the user forces the connection status. v3: Ville spots a typo, s/==/!=/ Signed-off-by: Chris Wilson Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_hdmi.c | 145 ++++++++++++++++-------------- 1 file changed, 80 insertions(+), 65 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 9169786dbbc3..3b21a769ef54 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -962,104 +962,117 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, return true; } -static enum drm_connector_status -intel_hdmi_detect(struct drm_connector *connector, bool force) +static void +intel_hdmi_unset_edid(struct drm_connector *connector) { - struct drm_device *dev = connector->dev; struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); - struct intel_digital_port *intel_dig_port = - hdmi_to_dig_port(intel_hdmi); - struct intel_encoder *intel_encoder = &intel_dig_port->base; - struct drm_i915_private *dev_priv = dev->dev_private; - struct edid *edid; - enum intel_display_power_domain power_domain; - enum drm_connector_status status = connector_status_disconnected; - DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", - connector->base.id, connector->name); + intel_hdmi->has_hdmi_sink = false; + intel_hdmi->has_audio = false; + intel_hdmi->rgb_quant_range_selectable = false; + + kfree(to_intel_connector(connector)->detect_edid); + to_intel_connector(connector)->detect_edid = NULL; +} + +static bool +intel_hdmi_set_edid(struct drm_connector *connector) +{ + struct drm_i915_private *dev_priv = to_i915(connector->dev); + struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); + struct intel_encoder *intel_encoder = + &hdmi_to_dig_port(intel_hdmi)->base; + enum intel_display_power_domain power_domain; + struct edid *edid; + bool connected = false; power_domain = intel_display_port_power_domain(intel_encoder); intel_display_power_get(dev_priv, power_domain); - intel_hdmi->has_hdmi_sink = false; - intel_hdmi->has_audio = false; - intel_hdmi->rgb_quant_range_selectable = false; edid = drm_get_edid(connector, intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus)); - if (edid) { - if (edid->input & DRM_EDID_INPUT_DIGITAL) { - status = connector_status_connected; - if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI) - intel_hdmi->has_hdmi_sink = - drm_detect_hdmi_monitor(edid); - intel_hdmi->has_audio = drm_detect_monitor_audio(edid); - intel_hdmi->rgb_quant_range_selectable = - drm_rgb_quant_range_selectable(edid); - } - kfree(edid); - } + intel_display_power_put(dev_priv, power_domain); + + to_intel_connector(connector)->detect_edid = edid; + if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) { + intel_hdmi->rgb_quant_range_selectable = + drm_rgb_quant_range_selectable(edid); - if (status == connector_status_connected) { + intel_hdmi->has_audio = drm_detect_monitor_audio(edid); if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO) intel_hdmi->has_audio = - (intel_hdmi->force_audio == HDMI_AUDIO_ON); - intel_encoder->type = INTEL_OUTPUT_HDMI; + intel_hdmi->force_audio == HDMI_AUDIO_ON; + + if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI) + intel_hdmi->has_hdmi_sink = + drm_detect_hdmi_monitor(edid); + + connected = true; } - intel_display_power_put(dev_priv, power_domain); + return connected; +} + +static enum drm_connector_status +intel_hdmi_detect(struct drm_connector *connector, bool force) +{ + enum drm_connector_status status; + + DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", + connector->base.id, connector->name); + + intel_hdmi_unset_edid(connector); + + if (intel_hdmi_set_edid(connector)) { + struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); + + hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI; + status = connector_status_connected; + } else + status = connector_status_disconnected; return status; } -static int intel_hdmi_get_modes(struct drm_connector *connector) +static void +intel_hdmi_force(struct drm_connector *connector) { - struct intel_encoder *intel_encoder = intel_attached_encoder(connector); - struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&intel_encoder->base); - struct drm_i915_private *dev_priv = connector->dev->dev_private; - enum intel_display_power_domain power_domain; - int ret; + struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); - /* We should parse the EDID data and find out if it's an HDMI sink so - * we can send audio to it. - */ + DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", + connector->base.id, connector->name); - power_domain = intel_display_port_power_domain(intel_encoder); - intel_display_power_get(dev_priv, power_domain); + intel_hdmi_unset_edid(connector); - ret = intel_ddc_get_modes(connector, - intel_gmbus_get_adapter(dev_priv, - intel_hdmi->ddc_bus)); + if (connector->status != connector_status_connected) + return; - intel_display_power_put(dev_priv, power_domain); + intel_hdmi_set_edid(connector); + hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI; +} - return ret; +static int intel_hdmi_get_modes(struct drm_connector *connector) +{ + struct edid *edid; + + edid = to_intel_connector(connector)->detect_edid; + if (edid == NULL) + return 0; + + return intel_connector_update_modes(connector, edid); } static bool intel_hdmi_detect_audio(struct drm_connector *connector) { - struct intel_encoder *intel_encoder = intel_attached_encoder(connector); - struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&intel_encoder->base); - struct drm_i915_private *dev_priv = connector->dev->dev_private; - enum intel_display_power_domain power_domain; - struct edid *edid; bool has_audio = false; + struct edid *edid; - power_domain = intel_display_port_power_domain(intel_encoder); - intel_display_power_get(dev_priv, power_domain); - - edid = drm_get_edid(connector, - intel_gmbus_get_adapter(dev_priv, - intel_hdmi->ddc_bus)); - if (edid) { - if (edid->input & DRM_EDID_INPUT_DIGITAL) - has_audio = drm_detect_monitor_audio(edid); - kfree(edid); - } - - intel_display_power_put(dev_priv, power_domain); + edid = to_intel_connector(connector)->detect_edid; + if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) + has_audio = drm_detect_monitor_audio(edid); return has_audio; } @@ -1479,6 +1492,7 @@ static void chv_hdmi_pre_enable(struct intel_encoder *encoder) static void intel_hdmi_destroy(struct drm_connector *connector) { + intel_hdmi_unset_edid(connector); drm_connector_cleanup(connector); kfree(connector); } @@ -1486,6 +1500,7 @@ static void intel_hdmi_destroy(struct drm_connector *connector) static const struct drm_connector_funcs intel_hdmi_connector_funcs = { .dpms = intel_connector_dpms, .detect = intel_hdmi_detect, + .force = intel_hdmi_force, .fill_modes = drm_helper_probe_single_connector_modes, .set_property = intel_hdmi_set_property, .destroy = intel_hdmi_destroy, -- 2.34.1