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ASoC: hdmi-codec: Add an op to set callback function for plug event 

Add an op in hdmi_codec_ops so codec driver can register callback
function to handle plug event.

Driver in DRM can use this callback function to report connector status.

Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
Link: https://lore.kernel.org/r/20190717083327.47646-2-cychiang@chromium.org
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cheng-Yi Chiang 2019-07-17 16:33:23 +08:00 committed by Mark Brown
parent dfe58f2011
commit 6fa5963c37
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 63 additions and 0 deletions
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17
include/sound/hdmi-codec.h
View File

@ -47,6 +47,9 @@ struct hdmi_codec_params {
int channels;
};
typedef void (*hdmi_codec_plugged_cb)(struct device *dev,
bool plugged);
struct hdmi_codec_pdata;
struct hdmi_codec_ops {
/*
@ -88,6 +91,14 @@ struct hdmi_codec_ops {
*/
int (*get_dai_id)(struct snd_soc_component *comment,
struct device_node *endpoint);
/*
* Hook callback function to handle connector plug event.
* Optional
*/
int (*hook_plugged_cb)(struct device *dev, void *data,
hdmi_codec_plugged_cb fn,
struct device *codec_dev);
};
/* HDMI codec initalization data */
@ -99,6 +110,12 @@ struct hdmi_codec_pdata {
void *data;
};
struct snd_soc_component;
struct snd_soc_jack;
int hdmi_codec_set_jack_detect(struct snd_soc_component *component,
struct snd_soc_jack *jack);
#define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
#endif /* __HDMI_CODEC_H__ */

46
sound/soc/codecs/hdmi-codec.c
View File

@ -7,6 +7,7 @@
#include <linux/module.h>
#include <linux/string.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@ -274,6 +275,8 @@ struct hdmi_codec_priv {
struct snd_pcm_chmap *chmap_info;
unsigned int chmap_idx;
struct mutex lock;
struct snd_soc_jack *jack;
unsigned int jack_status;
};
static const struct snd_soc_dapm_widget hdmi_widgets[] = {
@ -663,6 +666,49 @@ static int hdmi_dai_probe(struct snd_soc_dai *dai)
return 0;
}
static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
unsigned int jack_status)
{
if (hcp->jack && jack_status != hcp->jack_status) {
snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
hcp->jack_status = jack_status;
}
}
static void plugged_cb(struct device *dev, bool plugged)
{
struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
if (plugged)
hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
else
hdmi_codec_jack_report(hcp, 0);
}
/**
* hdmi_codec_set_jack_detect - register HDMI plugged callback
* @component: the hdmi-codec instance
* @jack: ASoC jack to report (dis)connection events on
*/
int hdmi_codec_set_jack_detect(struct snd_soc_component *component,
struct snd_soc_jack *jack)
{
struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
int ret = -EOPNOTSUPP;
if (hcp->hcd.ops->hook_plugged_cb) {
hcp->jack = jack;
ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
hcp->hcd.data,
plugged_cb,
component->dev);
if (ret)
hcp->jack = NULL;
}
return ret;
}
EXPORT_SYMBOL_GPL(hdmi_codec_set_jack_detect);
static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
{
struct hdmi_codec_daifmt *cf = dai->playback_dma_data;