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ASoC: hdmi-codec: callback function will be called with private data 

Current hdmi-codec driver is assuming that it will be registered
from HDMI driver. Because of this assumption, each callback function
has struct device pointer which is parent device (= HDMI).
Then, it can use dev_get_drvdata() to get private data.

OTOH, on some SoC/HDMI case, SoC has VIDEO/SOUND and HDMI IPs.
This case, it needs SoC VIDEO, SoC SOUND and HDMI video, HDMI codec
driver. In DesignWare HDMI IP case, SoC VIDEO (= DRM/KMS) driver tries
to bind DesignWare HDMI video driver, and HDMI codec driver
(= hdmi-codec). This case, above "parent device" of HDMI codec driver
is DRM/KMS driver and its "device" already has private data.

And, from DT and ASoC CPU/Codec/Card binding point of view, HDMI codec
(= hdmi-codec) needs to have "parent device" (= DRM/KMS), otherwise,
it never detect sound card.

Because of these reasons, some driver can't use dev_get_drvdata() to
get private data on hdmi-codec driver. This patch add new void pointer
on hdmi_codec_pdata for private data, and callback function will be
called with it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2016-06-24 02:47:55 +00:00 committed by Mark Brown
parent 1a695a905c
commit efc9194bcf
2 changed files with 16 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
include/sound/hdmi-codec.h
View File

@ -53,18 +53,19 @@ struct hdmi_codec_params {
int channels;
};
struct hdmi_codec_pdata;
struct hdmi_codec_ops {
/*
* Called when ASoC starts an audio stream setup.
* Optional
*/
int (*audio_startup)(struct device *dev);
int (*audio_startup)(struct device *dev, void *data);
/*
* Configures HDMI-encoder for audio stream.
* Mandatory
*/
int (*hw_params)(struct device *dev,
int (*hw_params)(struct device *dev, void *data,
struct hdmi_codec_daifmt *fmt,
struct hdmi_codec_params *hparms);
@ -72,19 +73,20 @@ struct hdmi_codec_ops {
* Shuts down the audio stream.
* Mandatory
*/
void (*audio_shutdown)(struct device *dev);
void (*audio_shutdown)(struct device *dev, void *data);
/*
* Mute/unmute HDMI audio stream.
* Optional
*/
int (*digital_mute)(struct device *dev, bool enable);
int (*digital_mute)(struct device *dev, void *data, bool enable);
/*
* Provides EDID-Like-Data from connected HDMI device.
* Optional
*/
int (*get_eld)(struct device *dev, uint8_t *buf, size_t len);
int (*get_eld)(struct device *dev, void *data,
uint8_t *buf, size_t len);
};
/* HDMI codec initalization data */
@ -93,6 +95,7 @@ struct hdmi_codec_pdata {
uint i2s:1;
uint spdif:1;
int max_i2s_channels;
void *data;
};
#define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"

15
sound/soc/codecs/hdmi-codec.c
View File

@ -112,7 +112,7 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
return ret;
if (hcp->hcd.ops->audio_startup) {
ret = hcp->hcd.ops->audio_startup(dai->dev->parent);
ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
if (ret) {
mutex_lock(&hcp->current_stream_lock);
hcp->current_stream = NULL;
@ -122,8 +122,8 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
}
if (hcp->hcd.ops->get_eld) {
ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->eld,
sizeof(hcp->eld));
ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
hcp->eld, sizeof(hcp->eld));
if (!ret) {
ret = snd_pcm_hw_constraint_eld(substream->runtime,
@ -144,7 +144,7 @@ static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
WARN_ON(hcp->current_stream != substream);
hcp->hcd.ops->audio_shutdown(dai->dev->parent);
hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
mutex_lock(&hcp->current_stream_lock);
hcp->current_stream = NULL;
@ -195,8 +195,8 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
hp.sample_rate = params_rate(params);
hp.channels = params_channels(params);
return hcp->hcd.ops->hw_params(dai->dev->parent, &hcp->daifmt[dai->id],
&hp);
return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
&hcp->daifmt[dai->id], &hp);
}
static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
@ -280,7 +280,8 @@ static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
dev_dbg(dai->dev, "%s()\n", __func__);
if (hcp->hcd.ops->digital_mute)
return hcp->hcd.ops->digital_mute(dai->dev->parent, mute);
return hcp->hcd.ops->digital_mute(dai->dev->parent,
hcp->hcd.data, mute);
return 0;
}