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ASoC: Add snd_soc_kcontrol_platform() helper function 

For platform controls snd_kcontrol_chip() currently returns a pointer to the
platform that registered the control. With the upcoming consolidation of
platform and CODEC controls this will change. Prepare for this by introducing
the snd_soc_kcontrol_platform() helper function that will hide the
implementation details of how the platform for a control can be obtained. This
will allow us to change this easily in the future.

The patch also updates all platforms to use this new helper function.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Lars-Peter Clausen 2014-03-18 09:02:05 +01:00 committed by Mark Brown
parent ea53bf77d1
commit f6272ff8a5
2 changed files with 18 additions and 4 deletions
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14
include/sound/soc.h
View File

@ -1242,6 +1242,20 @@ static inline struct snd_soc_codec *snd_soc_kcontrol_codec(
return snd_kcontrol_chip(kcontrol);
}
/**
* snd_soc_kcontrol_platform() - Returns the platform that registerd the control
* @kcontrol: The control for which to get the platform
*
* Note: This function will only work correctly if the control has been
* registered with snd_soc_add_platform_controls() or via table based setup of
* a snd_soc_platform_driver. Otherwise the behavior is undefined.
*/
static inline struct snd_soc_codec *snd_soc_kcontrol_platform(
struct snd_kcontrol *kcontrol)
{
return snd_kcontrol_chip(kcontrol);
}
int snd_soc_util_init(void);
void snd_soc_util_exit(void);

8
sound/soc/intel/sst-haswell-pcm.c
View File

@ -136,7 +136,7 @@ static inline unsigned int hsw_ipc_to_mixer(u32 value)
static int hsw_stream_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct hsw_priv_data *pdata =
@ -174,7 +174,7 @@ static int hsw_stream_volume_put(struct snd_kcontrol *kcontrol,
static int hsw_stream_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct hsw_priv_data *pdata =
@ -206,7 +206,7 @@ static int hsw_stream_volume_get(struct snd_kcontrol *kcontrol,
static int hsw_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
u32 volume;
@ -231,7 +231,7 @@ static int hsw_volume_put(struct snd_kcontrol *kcontrol,
static int hsw_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_kcontrol_chip(kcontrol);
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
unsigned int volume = 0;