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ASoC: Automatically assign the default readable()/volatile() functions 

Ensure that all calls to readable_register()/volatile_register() go via
the snd_soc_codec function pointers.

If the default register access table has been given but no functions
for handling readable()/volatile() registers, use the default ones provided
by soc-cache.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos 2011-01-13 12:20:38 +00:00 committed by Mark Brown
parent d4754ec91c
commit 1500b7b5ff
2 changed files with 14 additions and 3 deletions
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2
include/sound/soc.h
View File

@ -480,6 +480,8 @@ struct snd_soc_codec {
int num_dai;
enum snd_soc_compress_type compress_type;
size_t reg_size; /* reg_cache_size * reg_word_size */
int (*volatile_register)(struct snd_soc_codec *, unsigned int);
int (*readable_register)(struct snd_soc_codec *, unsigned int);
/* runtime */
struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */

15
sound/soc/soc-core.c
View File

@ -84,7 +84,7 @@ static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf)
count += sprintf(buf, "%s registers\n", codec->name);
for (i = 0; i < codec->driver->reg_cache_size; i += step) {
if (codec->driver->readable_register && !codec->driver->readable_register(codec, i))
if (codec->readable_register && !codec->readable_register(codec, i))
continue;
count += sprintf(buf + count, "%2x: ", i);
@ -2029,8 +2029,8 @@ static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
*/
int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg)
{
if (codec->driver->volatile_register)
return codec->driver->volatile_register(codec, reg);
if (codec->volatile_register)
return codec->volatile_register(codec, reg);
else
return 0;
}
@ -3489,6 +3489,8 @@ int snd_soc_register_codec(struct device *dev,
codec->write = codec_drv->write;
codec->read = codec_drv->read;
codec->volatile_register = codec_drv->volatile_register;
codec->readable_register = codec_drv->readable_register;
codec->dapm.bias_level = SND_SOC_BIAS_OFF;
codec->dapm.dev = dev;
codec->dapm.codec = codec;
@ -3517,6 +3519,13 @@ int snd_soc_register_codec(struct device *dev,
}
}
if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
if (!codec->volatile_register)
codec->volatile_register = snd_soc_default_volatile_register;
if (!codec->readable_register)
codec->readable_register = snd_soc_default_readable_register;
}
for (i = 0; i < num_dai; i++) {
fixup_codec_formats(&dai_drv[i].playback);
fixup_codec_formats(&dai_drv[i].capture);