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Commit 01ed3c06 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Use regmap for codec parameter reads 



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: default avatarTakashi Iwai <tiwai@suse.de>
parent 4d75faa0

include/sound/hdaudio.h

+19 −1
Original line number Diff line number Diff line
@@ -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);

sound/hda/hdac_device.c

+9 −12
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/export.h>

#include <linux/pm_runtime.h>

#include <sound/hdaudio.h>

#include <sound/hda_regmap.h>

#include "local.h"



static void setup_fg_nodes(struct hdac_device *codec);
@@ -234,23 +235,19 @@ int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, 
EXPORT_SYMBOL_GPL(snd_hdac_read);



/**

 * snd_hdac_read_parm - read a codec parameter

 * @codec: the codec object

 * @nid: NID to read a parameter

 * @parm: parameter to read

 * _snd_hdac_read_parm - read a parmeter

 *

 * Returns -1 for error.  If you need to distinguish the error more

 * strictly, use snd_hdac_read() directly.

 * This function returns zero or an error unlike snd_hdac_read_parm().

 */

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 val;

	unsigned int cmd;



	if (snd_hdac_read(codec, nid, AC_VERB_PARAMETERS, parm, &val))

		return -1;

	return val;

	cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;

	return snd_hdac_regmap_read_raw(codec, cmd, res);

}

EXPORT_SYMBOL_GPL(snd_hdac_read_parm);

EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);



/**

 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes

sound/pci/hda/hda_codec.h

+1 −1
Original line number Diff line number Diff line
@@ -369,7 +369,7 @@ unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid, 
int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int flags,

			unsigned int verb, unsigned int parm);

#define snd_hda_param_read(codec, nid, param) \

	snd_hda_codec_read(codec, nid, 0, AC_VERB_PARAMETERS, param)

	snd_hdac_read_parm(&(codec)->core, nid, param)

#define snd_hda_get_sub_nodes(codec, nid, start_nid) \

	snd_hdac_get_sub_nodes(&(codec)->core, nid, start_nid)

int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,