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drm/i915: Add support for audio driver notifications

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Notifiations like mode change, hot plug and edid to
the audio driver are added. This is inturn used by the
audio driver for its functionality.

A new interface file capturing the notifications needed by the
audio driver is added

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Jerome Anand <jerome.anand@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jerome Anand 2017-01-25 04:27:50 +05:30 committed by Takashi Iwai
parent eef57324d9
commit 46d196ec46
4 changed files with 58 additions and 0 deletions
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2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -3400,6 +3400,8 @@ void i915_teardown_sysfs(struct drm_i915_private *dev_priv);
int intel_lpe_audio_init(struct drm_i915_private *dev_priv);
void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv);
void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
void *eld, int port, int tmds_clk_speed);
/* intel_i2c.c */
extern int intel_setup_gmbus(struct drm_device *dev);

6
drivers/gpu/drm/i915/intel_audio.c
View File

@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/component.h>
#include <drm/i915_component.h>
#include <drm/intel_lpe_audio.h>
#include "intel_drv.h"
#include <drm/drmP.h>
@ -630,6 +631,9 @@ void intel_audio_codec_enable(struct intel_encoder *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, (int) pipe);
intel_lpe_audio_notify(dev_priv, connector->eld, port,
crtc_state->port_clock);
}
/**
@ -663,6 +667,8 @@ void intel_audio_codec_disable(struct intel_encoder *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, (int) pipe);
intel_lpe_audio_notify(dev_priv, NULL, port, 0);
}
/**

1
drivers/gpu/drm/i915/intel_hdmi.c
View File

@ -36,6 +36,7 @@
#include <drm/drm_edid.h>
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include <drm/intel_lpe_audio.h>
#include "i915_drv.h"
static struct drm_device *intel_hdmi_to_dev(struct intel_hdmi *intel_hdmi)

49
drivers/gpu/drm/i915/intel_lpe_audio.c
View File

@ -319,3 +319,52 @@ void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv)
irq_free_desc(dev_priv->lpe_audio.irq);
}
/**
* intel_lpe_audio_notify() - notify lpe audio event
* audio driver and i915
* @dev_priv: the i915 drm device private data
* @eld : ELD data
* @port: port id
* @tmds_clk_speed: tmds clock frequency in Hz
*
* Notify lpe audio driver of eld change.
*/
void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
void *eld, int port, int tmds_clk_speed)
{
unsigned long irq_flags;
struct intel_hdmi_lpe_audio_pdata *pdata = NULL;
if (!HAS_LPE_AUDIO(dev_priv))
return;
pdata = dev_get_platdata(
&(dev_priv->lpe_audio.platdev->dev));
spin_lock_irqsave(&pdata->lpe_audio_slock, irq_flags);
if (eld != NULL) {
memcpy(pdata->eld.eld_data, eld,
HDMI_MAX_ELD_BYTES);
pdata->eld.port_id = port;
pdata->hdmi_connected = true;
if (tmds_clk_speed)
pdata->tmds_clock_speed = tmds_clk_speed;
} else {
memset(pdata->eld.eld_data, 0,
HDMI_MAX_ELD_BYTES);
pdata->hdmi_connected = false;
}
if (pdata->notify_audio_lpe)
pdata->notify_audio_lpe(
(eld != NULL) ? &pdata->eld : NULL);
else
pdata->notify_pending = true;
spin_unlock_irqrestore(&pdata->lpe_audio_slock,
irq_flags);
}