On Tue, Sep 02, 2014 at 09:24:48AM +0100, Chris Wilson wrote:
> 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.
>
> Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> 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..7428521d2e25 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);
I wonder if we should be updating has_hdmi_sink also in
intel_hdmi_set_property() when force_audio != HDMI_AUDIO_OFF_DVI.
But that's a separate issue so material for another patch.
> +
> + 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)
!=
Apart from that I didn't spot anything suspicious. So with this one
thing fixed you can slap on
Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
for the series.
> + 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,
> --
> 2.1.0
--
Ville Syrjälä
Intel OTC
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