diff options
Diffstat (limited to 'sound/soc/codecs/wm8731.c')
| -rw-r--r-- | sound/soc/codecs/wm8731.c | 203 |
1 files changed, 147 insertions, 56 deletions
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c index 8821af70e66..5ada6161132 100644 --- a/sound/soc/codecs/wm8731.c +++ b/sound/soc/codecs/wm8731.c @@ -2,6 +2,7 @@ * wm8731.c -- WM8731 ALSA SoC Audio driver * * Copyright 2005 Openedhand Ltd. + * Copyright 2006-12 Wolfson Microelectronics, plc * * Author: Richard Purdie <richard@openedhand.com> * @@ -19,6 +20,7 @@ #include <linux/pm.h> #include <linux/i2c.h> #include <linux/slab.h> +#include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/spi/spi.h> #include <linux/of_device.h> @@ -41,8 +43,9 @@ static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = { /* codec private data */ struct wm8731_priv { - enum snd_soc_control_type control_type; + struct regmap *regmap; struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES]; + const struct snd_pcm_hw_constraint_list *constraints; unsigned int sysclk; int sysclk_type; int playback_fs; @@ -52,22 +55,36 @@ struct wm8731_priv { /* * wm8731 register cache - * We can't read the WM8731 register space when we are - * using 2 wire for device control, so we cache them instead. - * There is no point in caching the reset register */ -static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { - 0x0097, 0x0097, 0x0079, 0x0079, - 0x000a, 0x0008, 0x009f, 0x000a, - 0x0000, 0x0000 +static const struct reg_default wm8731_reg_defaults[] = { + { 0, 0x0097 }, + { 1, 0x0097 }, + { 2, 0x0079 }, + { 3, 0x0079 }, + { 4, 0x000a }, + { 5, 0x0008 }, + { 6, 0x009f }, + { 7, 0x000a }, + { 8, 0x0000 }, + { 9, 0x0000 }, }; +static bool wm8731_volatile(struct device *dev, unsigned int reg) +{ + return reg == WM8731_RESET; +} + +static bool wm8731_writeable(struct device *dev, unsigned int reg) +{ + return reg <= WM8731_RESET; +} + #define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0) static const char *wm8731_input_select[] = {"Line In", "Mic"}; -static const struct soc_enum wm8731_insel_enum = - SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select); +static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum, + WM8731_APANA, 2, wm8731_input_select); static int wm8731_deemph[] = { 0, 32000, 44100, 48000 }; @@ -102,7 +119,7 @@ static int wm8731_set_deemph(struct snd_soc_codec *codec) static int wm8731_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); ucontrol->value.enumerated.item[0] = wm8731->deemph; @@ -113,7 +130,7 @@ static int wm8731_get_deemph(struct snd_kcontrol *kcontrol, static int wm8731_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); int deemph = ucontrol->value.enumerated.item[0]; int ret = 0; @@ -274,6 +291,36 @@ static const struct _coeff_div coeff_div[] = { {12000000, 88200, 136, 0xf, 0x1, 0x1}, }; +/* rates constraints */ +static const unsigned int wm8731_rates_12000000[] = { + 8000, 32000, 44100, 48000, 96000, 88200, +}; + +static const unsigned int wm8731_rates_12288000_18432000[] = { + 8000, 32000, 48000, 96000, +}; + +static const unsigned int wm8731_rates_11289600_16934400[] = { + 8000, 44100, 88200, +}; + +static const struct snd_pcm_hw_constraint_list wm8731_constraints_12000000 = { + .list = wm8731_rates_12000000, + .count = ARRAY_SIZE(wm8731_rates_12000000), +}; + +static const +struct snd_pcm_hw_constraint_list wm8731_constraints_12288000_18432000 = { + .list = wm8731_rates_12288000_18432000, + .count = ARRAY_SIZE(wm8731_rates_12288000_18432000), +}; + +static const +struct snd_pcm_hw_constraint_list wm8731_constraints_11289600_16934400 = { + .list = wm8731_rates_11289600_16934400, + .count = ARRAY_SIZE(wm8731_rates_11289600_16934400), +}; + static inline int get_coeff(int mclk, int rate) { int i; @@ -346,17 +393,26 @@ static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, } switch (freq) { - case 11289600: + case 0: + wm8731->constraints = NULL; + break; case 12000000: + wm8731->constraints = &wm8731_constraints_12000000; + break; case 12288000: - case 16934400: case 18432000: - wm8731->sysclk = freq; + wm8731->constraints = &wm8731_constraints_12288000_18432000; + break; + case 16934400: + case 11289600: + wm8731->constraints = &wm8731_constraints_11289600_16934400; break; default: return -EINVAL; } + wm8731->sysclk = freq; + snd_soc_dapm_sync(&codec->dapm); return 0; @@ -391,10 +447,10 @@ static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, iface |= 0x0001; break; case SND_SOC_DAIFMT_DSP_A: - iface |= 0x0003; + iface |= 0x0013; break; case SND_SOC_DAIFMT_DSP_B: - iface |= 0x0013; + iface |= 0x0003; break; default: return -EINVAL; @@ -441,7 +497,7 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec, if (ret != 0) return ret; - snd_soc_cache_sync(codec); + regcache_sync(wm8731->regmap); } /* Clear PWROFF, gate CLKOUT, everything else as-is */ @@ -452,19 +508,33 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec, snd_soc_write(codec, WM8731_PWR, 0xffff); regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); - codec->cache_sync = 1; + regcache_mark_dirty(wm8731->regmap); break; } codec->dapm.bias_level = level; return 0; } +static int wm8731_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(dai->codec); + + if (wm8731->constraints) + snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + wm8731->constraints); + + return 0; +} + #define WM8731_RATES SNDRV_PCM_RATE_8000_96000 #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE) static const struct snd_soc_dai_ops wm8731_dai_ops = { + .startup = wm8731_startup, .hw_params = wm8731_hw_params, .digital_mute = wm8731_mute, .set_sysclk = wm8731_set_dai_sysclk, @@ -513,16 +583,10 @@ static int wm8731_probe(struct snd_soc_codec *codec) struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); int ret = 0, i; - ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8731->control_type); - if (ret < 0) { - dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); - return ret; - } - for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++) wm8731->supplies[i].supply = wm8731_supply_names[i]; - ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies), + ret = devm_regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies), wm8731->supplies); if (ret != 0) { dev_err(codec->dev, "Failed to request supplies: %d\n", ret); @@ -533,7 +597,7 @@ static int wm8731_probe(struct snd_soc_codec *codec) wm8731->supplies); if (ret != 0) { dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); - goto err_regulator_get; + return ret; } ret = wm8731_reset(codec); @@ -560,8 +624,6 @@ static int wm8731_probe(struct snd_soc_codec *codec) err_regulator_enable: regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); -err_regulator_get: - regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); return ret; } @@ -574,7 +636,6 @@ static int wm8731_remove(struct snd_soc_codec *codec) wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); - regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); return 0; } @@ -585,9 +646,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8731 = { .suspend = wm8731_suspend, .resume = wm8731_resume, .set_bias_level = wm8731_set_bias_level, - .reg_cache_size = ARRAY_SIZE(wm8731_reg), - .reg_word_size = sizeof(u16), - .reg_cache_default = wm8731_reg, .dapm_widgets = wm8731_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets), .dapm_routes = wm8731_intercon, @@ -603,30 +661,53 @@ static const struct of_device_id wm8731_of_match[] = { MODULE_DEVICE_TABLE(of, wm8731_of_match); +static const struct regmap_config wm8731_regmap = { + .reg_bits = 7, + .val_bits = 9, + + .max_register = WM8731_RESET, + .volatile_reg = wm8731_volatile, + .writeable_reg = wm8731_writeable, + + .cache_type = REGCACHE_RBTREE, + .reg_defaults = wm8731_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults), +}; + #if defined(CONFIG_SPI_MASTER) -static int __devinit wm8731_spi_probe(struct spi_device *spi) +static int wm8731_spi_probe(struct spi_device *spi) { struct wm8731_priv *wm8731; int ret; - wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); + wm8731 = devm_kzalloc(&spi->dev, sizeof(struct wm8731_priv), + GFP_KERNEL); if (wm8731 == NULL) return -ENOMEM; - wm8731->control_type = SND_SOC_SPI; + wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap); + if (IS_ERR(wm8731->regmap)) { + ret = PTR_ERR(wm8731->regmap); + dev_err(&spi->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + spi_set_drvdata(spi, wm8731); ret = snd_soc_register_codec(&spi->dev, &soc_codec_dev_wm8731, &wm8731_dai, 1); - if (ret < 0) - kfree(wm8731); - return ret; + if (ret != 0) { + dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret); + return ret; + } + + return 0; } -static int __devexit wm8731_spi_remove(struct spi_device *spi) +static int wm8731_spi_remove(struct spi_device *spi) { snd_soc_unregister_codec(&spi->dev); - kfree(spi_get_drvdata(spi)); return 0; } @@ -637,35 +718,45 @@ static struct spi_driver wm8731_spi_driver = { .of_match_table = wm8731_of_match, }, .probe = wm8731_spi_probe, - .remove = __devexit_p(wm8731_spi_remove), + .remove = wm8731_spi_remove, }; #endif /* CONFIG_SPI_MASTER */ -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) -static __devinit int wm8731_i2c_probe(struct i2c_client *i2c, - const struct i2c_device_id *id) +#if IS_ENABLED(CONFIG_I2C) +static int wm8731_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) { struct wm8731_priv *wm8731; int ret; - wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); + wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv), + GFP_KERNEL); if (wm8731 == NULL) return -ENOMEM; + wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap); + if (IS_ERR(wm8731->regmap)) { + ret = PTR_ERR(wm8731->regmap); + dev_err(&i2c->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + i2c_set_clientdata(i2c, wm8731); - wm8731->control_type = SND_SOC_I2C; - ret = snd_soc_register_codec(&i2c->dev, + ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm8731, &wm8731_dai, 1); - if (ret < 0) - kfree(wm8731); - return ret; + if (ret != 0) { + dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); + return ret; + } + + return 0; } -static __devexit int wm8731_i2c_remove(struct i2c_client *client) +static int wm8731_i2c_remove(struct i2c_client *client) { snd_soc_unregister_codec(&client->dev); - kfree(i2c_get_clientdata(client)); return 0; } @@ -682,7 +773,7 @@ static struct i2c_driver wm8731_i2c_driver = { .of_match_table = wm8731_of_match, }, .probe = wm8731_i2c_probe, - .remove = __devexit_p(wm8731_i2c_remove), + .remove = wm8731_i2c_remove, .id_table = wm8731_i2c_id, }; #endif @@ -690,7 +781,7 @@ static struct i2c_driver wm8731_i2c_driver = { static int __init wm8731_modinit(void) { int ret = 0; -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) +#if IS_ENABLED(CONFIG_I2C) ret = i2c_add_driver(&wm8731_i2c_driver); if (ret != 0) { printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n", @@ -710,7 +801,7 @@ module_init(wm8731_modinit); static void __exit wm8731_exit(void) { -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) +#if IS_ENABLED(CONFIG_I2C) i2c_del_driver(&wm8731_i2c_driver); #endif #if defined(CONFIG_SPI_MASTER) |