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ALSA: hda - Use regmap for codec parameter reads

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Let's start converting the access functions to regmap.
The first one is the simplest, just converting the codec parameter
read helper function snd_hda_param_read().

Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Takashi Iwai 2015-02-26 13:57:47 +01:00
commit 01ed3c06c6
3 changed files with 29 additions and 14 deletions
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20
include/sound/hdaudio.h
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@ -105,12 +105,30 @@ int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
unsigned int flags, unsigned int *res);
int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
unsigned int verb, unsigned int parm, unsigned int *res);
int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm);
int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
unsigned int *res);
int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
hda_nid_t *conn_list, int max_conns);
int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
hda_nid_t *start_id);
/**
* snd_hdac_read_parm - read a codec parameter
* @codec: the codec object
* @nid: NID to read a parameter
* @parm: parameter to read
*
* Returns -1 for error. If you need to distinguish the error more
* strictly, use _snd_hdac_read_parm() directly.
*/
static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
int parm)
{
unsigned int val;
return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
}
#ifdef CONFIG_PM
void snd_hdac_power_up(struct hdac_device *codec);
void snd_hdac_power_down(struct hdac_device *codec);