diff options
Diffstat (limited to 'sound/soc/codecs/wm8978.c')
| -rw-r--r-- | sound/soc/codecs/wm8978.c | 185 |
1 files changed, 121 insertions, 64 deletions
diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c index 85d514d63a4..72d5fdcd3cc 100644 --- a/sound/soc/codecs/wm8978.c +++ b/sound/soc/codecs/wm8978.c @@ -18,6 +18,7 @@ #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> +#include <linux/regmap.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> @@ -29,28 +30,74 @@ #include "wm8978.h" -/* wm8978 register cache. Note that register 0 is not included in the cache. */ -static const u16 wm8978_reg[WM8978_CACHEREGNUM] = { - 0x0000, 0x0000, 0x0000, 0x0000, /* 0x00...0x03 */ - 0x0050, 0x0000, 0x0140, 0x0000, /* 0x04...0x07 */ - 0x0000, 0x0000, 0x0000, 0x00ff, /* 0x08...0x0b */ - 0x00ff, 0x0000, 0x0100, 0x00ff, /* 0x0c...0x0f */ - 0x00ff, 0x0000, 0x012c, 0x002c, /* 0x10...0x13 */ - 0x002c, 0x002c, 0x002c, 0x0000, /* 0x14...0x17 */ - 0x0032, 0x0000, 0x0000, 0x0000, /* 0x18...0x1b */ - 0x0000, 0x0000, 0x0000, 0x0000, /* 0x1c...0x1f */ - 0x0038, 0x000b, 0x0032, 0x0000, /* 0x20...0x23 */ - 0x0008, 0x000c, 0x0093, 0x00e9, /* 0x24...0x27 */ - 0x0000, 0x0000, 0x0000, 0x0000, /* 0x28...0x2b */ - 0x0033, 0x0010, 0x0010, 0x0100, /* 0x2c...0x2f */ - 0x0100, 0x0002, 0x0001, 0x0001, /* 0x30...0x33 */ - 0x0039, 0x0039, 0x0039, 0x0039, /* 0x34...0x37 */ - 0x0001, 0x0001, /* 0x38...0x3b */ +static const struct reg_default wm8978_reg_defaults[] = { + { 1, 0x0000 }, + { 2, 0x0000 }, + { 3, 0x0000 }, + { 4, 0x0050 }, + { 5, 0x0000 }, + { 6, 0x0140 }, + { 7, 0x0000 }, + { 8, 0x0000 }, + { 9, 0x0000 }, + { 10, 0x0000 }, + { 11, 0x00ff }, + { 12, 0x00ff }, + { 13, 0x0000 }, + { 14, 0x0100 }, + { 15, 0x00ff }, + { 16, 0x00ff }, + { 17, 0x0000 }, + { 18, 0x012c }, + { 19, 0x002c }, + { 20, 0x002c }, + { 21, 0x002c }, + { 22, 0x002c }, + { 23, 0x0000 }, + { 24, 0x0032 }, + { 25, 0x0000 }, + { 26, 0x0000 }, + { 27, 0x0000 }, + { 28, 0x0000 }, + { 29, 0x0000 }, + { 30, 0x0000 }, + { 31, 0x0000 }, + { 32, 0x0038 }, + { 33, 0x000b }, + { 34, 0x0032 }, + { 35, 0x0000 }, + { 36, 0x0008 }, + { 37, 0x000c }, + { 38, 0x0093 }, + { 39, 0x00e9 }, + { 40, 0x0000 }, + { 41, 0x0000 }, + { 42, 0x0000 }, + { 43, 0x0000 }, + { 44, 0x0033 }, + { 45, 0x0010 }, + { 46, 0x0010 }, + { 47, 0x0100 }, + { 48, 0x0100 }, + { 49, 0x0002 }, + { 50, 0x0001 }, + { 51, 0x0001 }, + { 52, 0x0039 }, + { 53, 0x0039 }, + { 54, 0x0039 }, + { 55, 0x0039 }, + { 56, 0x0001 }, + { 57, 0x0001 }, }; +static bool wm8978_volatile(struct device *dev, unsigned int reg) +{ + return reg == WM8978_RESET; +} + /* codec private data */ struct wm8978_priv { - enum snd_soc_control_type control_type; + struct regmap *regmap; unsigned int f_pllout; unsigned int f_mclk; unsigned int f_256fs; @@ -303,7 +350,7 @@ static const struct snd_soc_dapm_widget wm8978_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("RSPK"), }; -static const struct snd_soc_dapm_route audio_map[] = { +static const struct snd_soc_dapm_route wm8978_dapm_routes[] = { /* Output mixer */ {"Right Output Mixer", "PCM Playback Switch", "Right DAC"}, {"Right Output Mixer", "Aux Playback Switch", "RAUX"}, @@ -352,18 +399,6 @@ static const struct snd_soc_dapm_route audio_map[] = { {"Left Input Mixer", "MicP Switch", "LMICP"}, }; -static int wm8978_add_widgets(struct snd_soc_codec *codec) -{ - struct snd_soc_dapm_context *dapm = &codec->dapm; - - snd_soc_dapm_new_controls(dapm, wm8978_dapm_widgets, - ARRAY_SIZE(wm8978_dapm_widgets)); - /* set up the WM8978 audio map */ - snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); - - return 0; -} - /* PLL divisors */ struct wm8978_pll_div { u32 k; @@ -894,26 +929,23 @@ static struct snd_soc_dai_driver wm8978_dai = { static int wm8978_suspend(struct snd_soc_codec *codec) { + struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec); + wm8978_set_bias_level(codec, SND_SOC_BIAS_OFF); /* Also switch PLL off */ snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, 0); + regcache_mark_dirty(wm8978->regmap); + return 0; } static int wm8978_resume(struct snd_soc_codec *codec) { struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec); - int i; - u16 *cache = codec->reg_cache; /* Sync reg_cache with the hardware */ - for (i = 0; i < ARRAY_SIZE(wm8978_reg); i++) { - if (i == WM8978_RESET) - continue; - if (cache[i] != wm8978_reg[i]) - snd_soc_write(codec, i, cache[i]); - } + regcache_sync(wm8978->regmap); wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY); @@ -953,7 +985,8 @@ static int wm8978_probe(struct snd_soc_codec *codec) * default hardware setting */ wm8978->sysclk = WM8978_PLL; - ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); + codec->control_data = wm8978->regmap; + ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP); if (ret < 0) { dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); return ret; @@ -967,19 +1000,8 @@ static int wm8978_probe(struct snd_soc_codec *codec) for (i = 0; i < ARRAY_SIZE(update_reg); i++) snd_soc_update_bits(codec, update_reg[i], 0x100, 0x100); - /* Reset the codec */ - ret = snd_soc_write(codec, WM8978_RESET, 0); - if (ret < 0) { - dev_err(codec->dev, "Failed to issue reset\n"); - return ret; - } - wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY); - snd_soc_add_controls(codec, wm8978_snd_controls, - ARRAY_SIZE(wm8978_snd_controls)); - wm8978_add_widgets(codec); - return 0; } @@ -996,35 +1018,75 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8978 = { .suspend = wm8978_suspend, .resume = wm8978_resume, .set_bias_level = wm8978_set_bias_level, - .reg_cache_size = ARRAY_SIZE(wm8978_reg), - .reg_word_size = sizeof(u16), - .reg_cache_default = wm8978_reg, + + .controls = wm8978_snd_controls, + .num_controls = ARRAY_SIZE(wm8978_snd_controls), + .dapm_widgets = wm8978_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm8978_dapm_widgets), + .dapm_routes = wm8978_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(wm8978_dapm_routes), +}; + +static const struct regmap_config wm8978_regmap_config = { + .reg_bits = 7, + .val_bits = 9, + + .max_register = WM8978_MAX_REGISTER, + .volatile_reg = wm8978_volatile, + + .cache_type = REGCACHE_RBTREE, + .reg_defaults = wm8978_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8978_reg_defaults), }; -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) static __devinit int wm8978_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8978_priv *wm8978; int ret; - wm8978 = kzalloc(sizeof(struct wm8978_priv), GFP_KERNEL); + wm8978 = devm_kzalloc(&i2c->dev, sizeof(struct wm8978_priv), + GFP_KERNEL); if (wm8978 == NULL) return -ENOMEM; + wm8978->regmap = regmap_init_i2c(i2c, &wm8978_regmap_config); + if (IS_ERR(wm8978->regmap)) { + ret = PTR_ERR(wm8978->regmap); + dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret); + return ret; + } + i2c_set_clientdata(i2c, wm8978); + /* Reset the codec */ + ret = regmap_write(wm8978->regmap, WM8978_RESET, 0); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret); + goto err; + } + ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm8978, &wm8978_dai, 1); - if (ret < 0) - kfree(wm8978); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); + goto err; + } + + return 0; + +err: + regmap_exit(wm8978->regmap); return ret; } static __devexit int wm8978_i2c_remove(struct i2c_client *client) { + struct wm8978_priv *wm8978 = i2c_get_clientdata(client); + snd_soc_unregister_codec(&client->dev); - kfree(i2c_get_clientdata(client)); + regmap_exit(wm8978->regmap); + return 0; } @@ -1043,27 +1105,22 @@ static struct i2c_driver wm8978_i2c_driver = { .remove = __devexit_p(wm8978_i2c_remove), .id_table = wm8978_i2c_id, }; -#endif static int __init wm8978_modinit(void) { int ret = 0; -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) ret = i2c_add_driver(&wm8978_i2c_driver); if (ret != 0) { printk(KERN_ERR "Failed to register WM8978 I2C driver: %d\n", ret); } -#endif return ret; } module_init(wm8978_modinit); static void __exit wm8978_exit(void) { -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) i2c_del_driver(&wm8978_i2c_driver); -#endif } module_exit(wm8978_exit); |