On 2015-08-28 15:07, Jani Nikula wrote:
On Wed, 19 Aug 2015, David Henningsson david.henningsson@canonical.com wrote:
When the audio codec is enabled or disabled, notify the audio driver. This will enable the audio driver to get the notification at all times (even when audio is in different powersave states).
Signed-off-by: David Henningsson david.henningsson@canonical.com
drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_audio.c | 23 ++++++++++++++++++++--- 2 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index fd1de45..1fc327d 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1809,6 +1809,7 @@ struct drm_i915_private { struct drm_property *force_audio_property;
/* hda/i915 audio component */
struct i915_audio_component *audio_component; bool audio_component_registered;
uint32_t hw_context_size;
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 3da9b84..969835d 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -399,6 +399,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) struct drm_connector *connector; struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = dev->dev_private;
struct i915_audio_component *acomp = dev_priv->audio_component;
struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
enum port port = intel_dig_port->port;
connector = drm_select_eld(encoder, mode); if (!connector)
@@ -419,6 +422,9 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder)
if (dev_priv->display.audio_codec_enable) dev_priv->display.audio_codec_enable(connector, intel_encoder, mode);
if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port, 0);}
/**
@@ -428,13 +434,20 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder)
- The disable sequences must be performed before disabling the transcoder or
- port.
*/ -void intel_audio_codec_disable(struct intel_encoder *encoder) +void intel_audio_codec_disable(struct intel_encoder *intel_encoder) {
- struct drm_device *dev = encoder->base.dev;
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = dev->dev_private;
struct i915_audio_component *acomp = dev_priv->audio_component;
struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
enum port port = intel_dig_port->port;
if (dev_priv->display.audio_codec_disable)
dev_priv->display.audio_codec_disable(encoder);
dev_priv->display.audio_codec_disable(intel_encoder);- if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port, 0);AFAICT this has a race with i915_audio_component_unbind, i.e. modeset while hda is being unloaded might crash.
What do others think, is drm_modeset_lock_all in combonent bind/unbind overkill?
Thanks for the review(s). I'm happy to add a drm_modeset_lock_all/drm_modeset_unlock_all - I'm not that familiar with the graphics side, really, so, is there another option...?
With that resolved one way or another (I'm not dismissing "we don't need to care") this is
Reviewed-by: Jani Nikula jani.nikula@intel.com
}
/** @@ -525,12 +538,14 @@ static int i915_audio_component_bind(struct device *i915_dev, struct device *hda_dev, void *data) { struct i915_audio_component *acomp = data;
struct drm_i915_private *dev_priv = dev_to_i915(i915_dev);
if (WARN_ON(acomp->ops || acomp->dev)) return -EEXIST;
acomp->ops = &i915_audio_component_ops; acomp->dev = i915_dev;
dev_priv->audio_component = acomp;
return 0; }
@@ -539,9 +554,11 @@ static void i915_audio_component_unbind(struct device *i915_dev, struct device *hda_dev, void *data) { struct i915_audio_component *acomp = data;
struct drm_i915_private *dev_priv = dev_to_i915(i915_dev);
acomp->ops = NULL; acomp->dev = NULL;
dev_priv->audio_component = NULL; }
static const struct component_ops i915_audio_component_bind_ops = {
-- 1.9.1