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ASoC: wm9705: Convert to regmap

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Currently the wm9712 driver still uses custom snd_soc_codec_driver IO
callbacks. This has been deprecated for a while, so convert the wm9705
driver to use regmap for its IO.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2016-10-21 10:27:07 +02:00 committed by Mark Brown
parent 1001354ca3
commit 206964e826
2 changed files with 64 additions and 60 deletions
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1
sound/soc/codecs/Kconfig
View File

@ -1054,6 +1054,7 @@ config SND_SOC_WM9090
config SND_SOC_WM9705
tristate
select REGMAP_AC97
config SND_SOC_WM9712
tristate

123
sound/soc/codecs/wm9705.c
View File

@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
@ -25,26 +26,48 @@
#define WM9705_VENDOR_ID 0x574d4c05
#define WM9705_VENDOR_ID_MASK 0xffffffff
/*
* WM9705 register cache
*/
static const u16 wm9705_reg[] = {
0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
static const struct reg_default wm9705_reg_defaults[] = {
{ 0x02, 0x8000 },
{ 0x04, 0x8000 },
{ 0x06, 0x8000 },
{ 0x0a, 0x8000 },
{ 0x0c, 0x8008 },
{ 0x0e, 0x8008 },
{ 0x10, 0x8808 },
{ 0x12, 0x8808 },
{ 0x14, 0x8808 },
{ 0x16, 0x8808 },
{ 0x18, 0x8808 },
{ 0x1a, 0x0000 },
{ 0x1c, 0x8000 },
{ 0x20, 0x0000 },
{ 0x22, 0x0000 },
{ 0x26, 0x000f },
{ 0x28, 0x0605 },
{ 0x2a, 0x0000 },
{ 0x2c, 0xbb80 },
{ 0x32, 0xbb80 },
{ 0x34, 0x2000 },
{ 0x5a, 0x0000 },
{ 0x5c, 0x0000 },
{ 0x72, 0x0808 },
{ 0x74, 0x0000 },
{ 0x76, 0x0006 },
{ 0x78, 0x0000 },
{ 0x7a, 0x0000 },
};
static const struct regmap_config wm9705_regmap_config = {
.reg_bits = 16,
.reg_stride = 2,
.val_bits = 16,
.max_register = 0x7e,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = regmap_ac97_default_volatile,
.reg_defaults = wm9705_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
};
static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
@ -203,39 +226,15 @@ static const struct snd_soc_dapm_route wm9705_audio_map[] = {
{"Right ADC", NULL, "ADC PGA"},
};
/* We use a register cache to enhance read performance. */
static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
switch (reg) {
case AC97_RESET:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return soc_ac97_ops->read(ac97, reg);
default:
reg = reg >> 1;
if (reg >= (ARRAY_SIZE(wm9705_reg)))
return -EIO;
return cache[reg];
}
return snd_soc_read(codec, reg);
}
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
soc_ac97_ops->write(ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9705_reg)))
cache[reg] = val;
return 0;
return snd_soc_write(codec, reg, val);
}
static int ac97_prepare(struct snd_pcm_substream *substream,
@ -299,9 +298,9 @@ static struct snd_soc_dai_driver wm9705_dai[] = {
#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);
regcache_cache_bypass(codec->component.regmap, true);
ac97_write(codec, AC97_POWERDOWN, 0xffff);
regcache_cache_bypass(codec->component.regmap, false);
return 0;
}
@ -309,17 +308,14 @@ static int wm9705_soc_suspend(struct snd_soc_codec *codec)
static int wm9705_soc_resume(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
int i, ret;
u16 *cache = codec->reg_cache;
int ret;
ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
WM9705_VENDOR_ID_MASK);
if (ret < 0)
return ret;
for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
soc_ac97_ops->write(ac97, i, cache[i>>1]);
}
regcache_sync(codec->component.regmap);
return 0;
}
@ -331,6 +327,8 @@ static int wm9705_soc_resume(struct snd_soc_codec *codec)
static int wm9705_soc_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
struct regmap *regmap;
int ret;
ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
WM9705_VENDOR_ID_MASK);
@ -339,15 +337,26 @@ static int wm9705_soc_probe(struct snd_soc_codec *codec)
return PTR_ERR(ac97);
}
regmap = regmap_init_ac97(ac97, &wm9705_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
goto err_free_ac97_codec;
}
snd_soc_codec_set_drvdata(codec, ac97);
snd_soc_codec_init_regmap(codec, regmap);
return 0;
err_free_ac97_codec:
snd_soc_free_ac97_codec(ac97);
return ret;
}
static int wm9705_soc_remove(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_soc_codec_exit_regmap(codec);
snd_soc_free_ac97_codec(ac97);
return 0;
}
@ -357,12 +366,6 @@ static const struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
.remove = wm9705_soc_remove,
.suspend = wm9705_soc_suspend,
.resume = wm9705_soc_resume,
.read = ac97_read,
.write = ac97_write,
.reg_cache_size = ARRAY_SIZE(wm9705_reg),
.reg_word_size = sizeof(u16),
.reg_cache_step = 2,
.reg_cache_default = wm9705_reg,
.component_driver = {
.controls = wm9705_snd_ac97_controls,