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ASoC: wm8940: Convert to direct regmap API usage
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This helps move us towards being able to remove the ASoC level I/O code.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
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Mark Brown committed Nov 24, 2013
1 parent 6435e5b commit fbbf7fe
Showing 1 changed file with 121 additions and 72 deletions.
193 changes: 121 additions & 72 deletions sound/soc/codecs/wm8940.c
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
Expand All @@ -41,78 +41,116 @@

struct wm8940_priv {
unsigned int sysclk;
enum snd_soc_control_type control_type;
struct regmap *regmap;
};

static int wm8940_volatile_register(struct snd_soc_codec *codec,
unsigned int reg)
static bool wm8940_volatile_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8940_SOFTRESET:
return 1;
return true;
default:
return 0;
return false;
}
}

static bool wm8940_readable_register(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8940_SOFTRESET:
case WM8940_POWER1:
case WM8940_POWER2:
case WM8940_POWER3:
case WM8940_IFACE:
case WM8940_COMPANDINGCTL:
case WM8940_CLOCK:
case WM8940_ADDCNTRL:
case WM8940_GPIO:
case WM8940_CTLINT:
case WM8940_DAC:
case WM8940_DACVOL:
case WM8940_ADC:
case WM8940_ADCVOL:
case WM8940_NOTCH1:
case WM8940_NOTCH2:
case WM8940_NOTCH3:
case WM8940_NOTCH4:
case WM8940_NOTCH5:
case WM8940_NOTCH6:
case WM8940_NOTCH7:
case WM8940_NOTCH8:
case WM8940_DACLIM1:
case WM8940_DACLIM2:
case WM8940_ALC1:
case WM8940_ALC2:
case WM8940_ALC3:
case WM8940_NOISEGATE:
case WM8940_PLLN:
case WM8940_PLLK1:
case WM8940_PLLK2:
case WM8940_PLLK3:
case WM8940_ALC4:
case WM8940_INPUTCTL:
case WM8940_PGAGAIN:
case WM8940_ADCBOOST:
case WM8940_OUTPUTCTL:
case WM8940_SPKMIX:
case WM8940_SPKVOL:
case WM8940_MONOMIX:
return true;
default:
return false;
}
}

static u16 wm8940_reg_defaults[] = {
0x8940, /* Soft Reset */
0x0000, /* Power 1 */
0x0000, /* Power 2 */
0x0000, /* Power 3 */
0x0010, /* Interface Control */
0x0000, /* Companding Control */
0x0140, /* Clock Control */
0x0000, /* Additional Controls */
0x0000, /* GPIO Control */
0x0002, /* Auto Increment Control */
0x0000, /* DAC Control */
0x00FF, /* DAC Volume */
0,
0,
0x0100, /* ADC Control */
0x00FF, /* ADC Volume */
0x0000, /* Notch Filter 1 Control 1 */
0x0000, /* Notch Filter 1 Control 2 */
0x0000, /* Notch Filter 2 Control 1 */
0x0000, /* Notch Filter 2 Control 2 */
0x0000, /* Notch Filter 3 Control 1 */
0x0000, /* Notch Filter 3 Control 2 */
0x0000, /* Notch Filter 4 Control 1 */
0x0000, /* Notch Filter 4 Control 2 */
0x0032, /* DAC Limit Control 1 */
0x0000, /* DAC Limit Control 2 */
0,
0,
0,
0,
0,
0,
0x0038, /* ALC Control 1 */
0x000B, /* ALC Control 2 */
0x0032, /* ALC Control 3 */
0x0000, /* Noise Gate */
0x0041, /* PLLN */
0x000C, /* PLLK1 */
0x0093, /* PLLK2 */
0x00E9, /* PLLK3 */
0,
0,
0x0030, /* ALC Control 4 */
0,
0x0002, /* Input Control */
0x0050, /* PGA Gain */
0,
0x0002, /* ADC Boost Control */
0,
0x0002, /* Output Control */
0x0000, /* Speaker Mixer Control */
0,
0,
0,
0x0079, /* Speaker Volume */
0,
0x0000, /* Mono Mixer Control */
static const struct reg_default wm8940_reg_defaults[] = {
{ 0x1, 0x0000 }, /* Power 1 */
{ 0x2, 0x0000 }, /* Power 2 */
{ 0x3, 0x0000 }, /* Power 3 */
{ 0x4, 0x0010 }, /* Interface Control */
{ 0x5, 0x0000 }, /* Companding Control */
{ 0x6, 0x0140 }, /* Clock Control */
{ 0x7, 0x0000 }, /* Additional Controls */
{ 0x8, 0x0000 }, /* GPIO Control */
{ 0x9, 0x0002 }, /* Auto Increment Control */
{ 0xa, 0x0000 }, /* DAC Control */
{ 0xb, 0x00FF }, /* DAC Volume */

{ 0xe, 0x0100 }, /* ADC Control */
{ 0xf, 0x00FF }, /* ADC Volume */
{ 0x10, 0x0000 }, /* Notch Filter 1 Control 1 */
{ 0x11, 0x0000 }, /* Notch Filter 1 Control 2 */
{ 0x12, 0x0000 }, /* Notch Filter 2 Control 1 */
{ 0x13, 0x0000 }, /* Notch Filter 2 Control 2 */
{ 0x14, 0x0000 }, /* Notch Filter 3 Control 1 */
{ 0x15, 0x0000 }, /* Notch Filter 3 Control 2 */
{ 0x16, 0x0000 }, /* Notch Filter 4 Control 1 */
{ 0x17, 0x0000 }, /* Notch Filter 4 Control 2 */
{ 0x18, 0x0032 }, /* DAC Limit Control 1 */
{ 0x19, 0x0000 }, /* DAC Limit Control 2 */

{ 0x20, 0x0038 }, /* ALC Control 1 */
{ 0x21, 0x000B }, /* ALC Control 2 */
{ 0x22, 0x0032 }, /* ALC Control 3 */
{ 0x23, 0x0000 }, /* Noise Gate */
{ 0x24, 0x0041 }, /* PLLN */
{ 0x25, 0x000C }, /* PLLK1 */
{ 0x26, 0x0093 }, /* PLLK2 */
{ 0x27, 0x00E9 }, /* PLLK3 */

{ 0x2a, 0x0030 }, /* ALC Control 4 */

{ 0x2c, 0x0002 }, /* Input Control */
{ 0x2d, 0x0050 }, /* PGA Gain */

{ 0x2f, 0x0002 }, /* ADC Boost Control */

{ 0x31, 0x0002 }, /* Output Control */
{ 0x32, 0x0000 }, /* Speaker Mixer Control */

{ 0x36, 0x0079 }, /* Speaker Volume */

{ 0x38, 0x0000 }, /* Mono Mixer Control */
};

static const char *wm8940_companding[] = { "Off", "NC", "u-law", "A-law" };
Expand Down Expand Up @@ -431,6 +469,7 @@ static int wm8940_mute(struct snd_soc_dai *dai, int mute)
static int wm8940_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec);
u16 val;
u16 pwr_reg = snd_soc_read(codec, WM8940_POWER1) & 0x1F0;
int ret = 0;
Expand All @@ -454,7 +493,7 @@ static int wm8940_set_bias_level(struct snd_soc_codec *codec,
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
ret = snd_soc_cache_sync(codec);
ret = regcache_sync(wm8940->regmap);
if (ret < 0) {
dev_err(codec->dev, "Failed to sync cache: %d\n", ret);
return ret;
Expand Down Expand Up @@ -669,12 +708,11 @@ static int wm8940_resume(struct snd_soc_codec *codec)

static int wm8940_probe(struct snd_soc_codec *codec)
{
struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec);
struct wm8940_setup_data *pdata = codec->dev->platform_data;
int ret;
u16 reg;

ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8940->control_type);
ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
Expand Down Expand Up @@ -722,10 +760,18 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8940 = {
.num_dapm_widgets = ARRAY_SIZE(wm8940_dapm_widgets),
.dapm_routes = wm8940_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(wm8940_dapm_routes),
.reg_cache_size = ARRAY_SIZE(wm8940_reg_defaults),
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8940_reg_defaults,
.volatile_register = wm8940_volatile_register,
};

static const struct regmap_config wm8940_regmap = {
.reg_bits = 8,
.val_bits = 16,

.max_register = WM8940_MONOMIX,
.reg_defaults = wm8940_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8940_reg_defaults),

.readable_reg = wm8940_readable_register,
.volatile_reg = wm8940_volatile_register,
};

static int wm8940_i2c_probe(struct i2c_client *i2c,
Expand All @@ -739,8 +785,11 @@ static int wm8940_i2c_probe(struct i2c_client *i2c,
if (wm8940 == NULL)
return -ENOMEM;

wm8940->regmap = devm_regmap_init_i2c(i2c, &wm8940_regmap);
if (IS_ERR(wm8940->regmap))
return PTR_ERR(wm8940->regmap);

i2c_set_clientdata(i2c, wm8940);
wm8940->control_type = SND_SOC_I2C;

ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8940, &wm8940_dai, 1);
Expand Down

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