diff options
Diffstat (limited to 'sound/soc/codecs/ak4647.c')
-rw-r--r-- | sound/soc/codecs/ak4647.c | 799 |
1 files changed, 799 insertions, 0 deletions
diff --git a/sound/soc/codecs/ak4647.c b/sound/soc/codecs/ak4647.c new file mode 100644 index 000000000000..46e2e8cbcacc --- /dev/null +++ b/sound/soc/codecs/ak4647.c @@ -0,0 +1,799 @@ +/* + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/*! + * @file ak4647.c + * @brief Driver for AK4647 + * + * @ingroup Sound + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/initval.h> +#include <sound/tlv.h> + +#include "ak4647.h" + +#define SET_BIT_IN_BYTE(byte, pos) (byte |= (0x01 << pos)) +#define CLEAR_BIT_IN_BYTE(byte, pos) (byte &= ~(0x01 << pos)) + +static struct i2c_client *ak4647_i2c_client; + +int ak4647_read_reg(unsigned int reg, u8 *value) +{ + s32 retval; + retval = i2c_smbus_read_byte_data(ak4647_i2c_client, reg); + if (-1 == retval) { + pr_err("%s:read reg errorr:reg=%x,val=%x\n", + __func__, reg, *value); + return -1; + } else { + *value = (u8) retval; + return 0; + } +} + +int ak4647_write_reg(unsigned int reg, u8 value) +{ + if (i2c_smbus_write_byte_data(ak4647_i2c_client, reg, value) < 0) { + pr_err("%s:write reg errorr:reg=%x,val=%x\n", + __func__, reg, value); + return -1; + } + return 0; +} + +static unsigned int ak4647_codec_read(struct snd_soc_codec *codec, + unsigned int reg) +{ + u8 value; + ak4647_read_reg(reg, &value); + return value; +} + +static int ak4647_codec_write(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + return ak4647_write_reg(reg, value); +} + +#define DEBUG_AK4647 0 + +#if DEBUG_AK4647 + +static char *ak4647_reg_names[] = { + "AK4647_PM1", + "AK4647_PM2", + "AK4647_SIG1", + "AK4647_SIG2", + "AK4647_MODE1", + "AK4647_MODE2", + "AK4647_TIMER", + "AK4647_ALC1", + "AK4647_ALC2", + "AK4647_LEFT_INPUT_VOLUME", + "AK4647_LEFT_DGT_VOLUME", + "AK4647_ALC3", + "AK4647_RIGHT_INPUT_VOLUME", + "AK4647_RIGHT_DGT_VOLUME", + "AK4647_MODE3", + "AK4647_MODE4", + "AK4647_PM3", + "AK4647_DGT_FIL_SEL", + "AK4647_FIL3_COEF0", + "AK4647_FIL3_COEF1", + "AK4647_FIL3_COEF2", + "AK4647_FIL3_COEF3", + "AK4647_EQ_COEF0", + "AK4647_EQ_COEF1", + "AK4647_EQ_COEF2", + "AK4647_EQ_COEF3", + "AK4647_EQ_COEF4", + "AK4647_EQ_COEF5", + "AK4647_FIL1_COEF0", + "AK4647_FIL1_COEF1", + "AK4647_FIL1_COEF2", + "AK4647_FIL1_COEF3", +}; + +static void dump_all_regs(void) +{ + int i; + u8 value; + + for (i = AK4647_REG_START; i < AK4647_REG_NUMBER; i++) { + ak4647_read_reg(i, &value); + pr_info("%s = 0x%x\n", ak4647_reg_names[i], value); + } +} +#endif + +static int loopback_xhandle_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); +static int loopback_xhandle_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); + +static const char *ak4647_hp_out[] = { "Stereo", "Mono" }; + +static const char *ak4647_left_in[] = { "LIN1", "LIN2" }; + +static const char *ak4647_right_in[] = { "RIN1", "RIN2" }; + +static const char *ak4647_deemp[] = { "44.1kHz", "Off", "48kHz", "32kHz" }; + +static const struct soc_enum ak4647_enum[] = { + SOC_ENUM_SINGLE(AK4647_MODE4, 2, 2, ak4647_hp_out), + SOC_ENUM_SINGLE(AK4647_MODE3, 0, 4, ak4647_deemp), + SOC_ENUM_SINGLE(AK4647_PM3, 1, 2, ak4647_left_in), + SOC_ENUM_SINGLE(AK4647_PM3, 2, 2, ak4647_right_in), +}; + +#undef snd_soc_info_bool_ext +#define snd_soc_info_bool_ext snd_ctl_boolean_mono_info +static const struct snd_kcontrol_new ak4647_snd_controls[] = { + SOC_ENUM("Headphone Output", ak4647_enum[0]), + SOC_ENUM("Playback Deemphasis", ak4647_enum[1]), + SOC_ENUM("Left Capture Select", ak4647_enum[2]), + SOC_ENUM("Right Capture Select", ak4647_enum[3]), + SOC_SINGLE("Bass Volume", AK4647_MODE3, 2, 3, 0), + SOC_SINGLE("Mic Boost (+20dB) Switch", AK4647_SIG1, 0, 1, 0), + SOC_SINGLE("Mic Bias", AK4647_SIG1, 2, 1, 0), + SOC_SINGLE("ALC Switch", AK4647_ALC1, 5, 1, 0), + SOC_SINGLE("ALC Recovery Time", AK4647_TIMER, 2, 3, 0), + SOC_SINGLE("ALC ZC Time", AK4647_TIMER, 4, 3, 0), + SOC_SINGLE("ALC Volume", AK4647_ALC2, 0, 127, 0), + SOC_SINGLE("Left Capture Volume", AK4647_LEFT_INPUT_VOLUME, 0, 242, 0), + SOC_SINGLE("Right Capture Volume", + AK4647_RIGHT_INPUT_VOLUME, 0, 242, 0), + SOC_SINGLE("Left Playback Volume", AK4647_LEFT_DGT_VOLUME, 0, 255, 1), + SOC_SINGLE("Right Playback Volume", AK4647_RIGHT_DGT_VOLUME, 0, 255, 1), + SOC_SINGLE_BOOL_EXT("Loopback Line-in", 0, + loopback_xhandle_get, loopback_xhandle_put), +}; + +/* Stereo Mixer for HP*/ +static const struct snd_kcontrol_new ak4647_hp_stereo_mixer_controls[] = { + SOC_DAPM_SINGLE("Playback Switch", AK4647_MODE4, 0, 1, 0), + SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4647_MODE4, 1, 1, 0), +}; + +/* Stereo Mixer for Line out*/ +static const struct snd_kcontrol_new ak4647_line_stereo_mixer_controls[] = { + SOC_DAPM_SINGLE("Playback Switch", AK4647_SIG1, 4, 1, 0), + SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4647_SIG2, 2, 1, 0), +}; + +/* ak4647 dapm widgets */ +static const struct snd_soc_dapm_widget ak4647_dapm_widgets[] = { + SND_SOC_DAPM_MIXER("Headphone Mixer", SND_SOC_NOPM, 0, 0, + &ak4647_hp_stereo_mixer_controls[0], + ARRAY_SIZE(ak4647_hp_stereo_mixer_controls)), + SND_SOC_DAPM_MIXER("Lineout Mixer", SND_SOC_NOPM, 0, 0, + &ak4647_line_stereo_mixer_controls[0], + ARRAY_SIZE(ak4647_line_stereo_mixer_controls)), + SND_SOC_DAPM_DAC("DAC", "Playback", AK4647_PM1, 2, 0), + SND_SOC_DAPM_OUTPUT("HPL"), + SND_SOC_DAPM_OUTPUT("HPR"), + SND_SOC_DAPM_OUTPUT("LOUT"), + + SND_SOC_DAPM_ADC("Left ADC", "Capture", AK4647_PM1, 0, 0), + SND_SOC_DAPM_ADC("Right ADC", "Capture", AK4647_PM3, 0, 0), + SND_SOC_DAPM_PGA("HP R Amp", AK4647_PM2, 4, 0, NULL, 0), + SND_SOC_DAPM_PGA("HP L Amp", AK4647_PM2, 5, 0, NULL, 0), + SND_SOC_DAPM_PGA("Mic", AK4647_PM1, 5, 0, NULL, 0), + SND_SOC_DAPM_PGA("Line Out Amp", AK4647_PM1, 3, 0, NULL, 0), + + SND_SOC_DAPM_MICBIAS("Mic Bias", AK4647_SIG1, 2, 0), + SND_SOC_DAPM_INPUT("Left Input"), + SND_SOC_DAPM_INPUT("Right Input"), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + /*headphone stereo mixer */ + {"Headphone Mixer", "Playback Switch", "DAC"}, + {"Headphone Mixer", "Mic Sidetone Switch", "Mic"}, + + /*lineout stereo mixer */ + {"Lineout Mixer", "Playback Switch", "DAC"}, + {"Lineout Mixer", "Mic Sidetone Switch", "Mic"}, + + /* headphone amp */ + {"HP R Amp", NULL, "Headphone Mixer"}, + {"HP L Amp", NULL, "Headphone Mixer"}, + + /* headphone */ + {"HPR", NULL, "HP R Amp"}, + {"HPL", NULL, "HP L Amp"}, + + /* line out */ + {"Line Out Amp", NULL, "Lineout Mixer"}, + {"LOUT", NULL, "Line Out Amp"}, + + /* ADC */ + {"Left ADC", NULL, "Left Input"}, + {"Right ADC", NULL, "Right Input"}, + +}; + +static int ak4647_add_widgets(struct snd_soc_codec *codec) +{ + snd_soc_dapm_new_controls(codec, ak4647_dapm_widgets, + ARRAY_SIZE(ak4647_dapm_widgets)); + + /* set up audio path audio_mapnects */ + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_dapm_new_widgets(codec); + return 0; +} + +#define AK4647_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ + SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ + SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_32000 | \ + SNDRV_PCM_RATE_48000) + +#define AK4647_FORMATS SNDRV_PCM_FMTBIT_S16_LE + +static int ak4647_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + u8 value; + u8 fs = 0; + + /* FS3 is on D5 */ + switch (freq) { + case 8000: + fs = 0x0; + break; + case 11025: + fs = 0x5; + break; + case 16000: + fs = 0x2; + break; + case 22050: + fs = 0x7; + break; + case 32000: + fs = 0x22; + break; + case 44100: + fs = 0x27; + break; + case 48000: + fs = 0x23; + break; + default: + pr_err("unsupported sample rate"); + return -1; + } + + ak4647_read_reg(AK4647_MODE2, &value); + value &= 0xC0; + value |= fs; + ak4647_write_reg(AK4647_MODE2, value); + return 0; +} + +static int ak4647_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) +{ + u8 reg_mode1, reg_pm2; + + /* get current values */ + ak4647_read_reg(AK4647_MODE1, ®_mode1); + ak4647_read_reg(AK4647_PM2, ®_pm2); + + /* set master/slave audio interface */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + SET_BIT_IN_BYTE(reg_pm2, 3); + break; + case SND_SOC_DAIFMT_CBS_CFS: + CLEAR_BIT_IN_BYTE(reg_pm2, 3); + break; + default: + return -EINVAL; + } + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + SET_BIT_IN_BYTE(reg_mode1, 0); + SET_BIT_IN_BYTE(reg_mode1, 1); + break; + case SND_SOC_DAIFMT_RIGHT_J: + SET_BIT_IN_BYTE(reg_mode1, 0); + CLEAR_BIT_IN_BYTE(reg_mode1, 1); + break; + case SND_SOC_DAIFMT_LEFT_J: + CLEAR_BIT_IN_BYTE(reg_mode1, 0); + SET_BIT_IN_BYTE(reg_mode1, 1); + break; + case SND_SOC_DAIFMT_DSP_A: + case SND_SOC_DAIFMT_DSP_B: + default: + pr_err("dai format %d not supported", fmt); + return -EINVAL; + } + + ak4647_write_reg(AK4647_MODE1, reg_mode1); + ak4647_write_reg(AK4647_PM2, reg_pm2); + return 0; +} + +static int ak4647_set_clkdiv(struct snd_soc_dai *codec_dai, int div_id, int div) +{ + int retval = 0; + u8 value; + if (AK4647_BCLK_CLKDIV == div_id) { + ak4647_read_reg(AK4647_MODE1, &value); + switch (div) { + case AK4647_BCLK_DIV_32: + CLEAR_BIT_IN_BYTE(value, 3); + ak4647_write_reg(AK4647_MODE1, value); + break; + case AK4647_BCLK_DIV_64: + SET_BIT_IN_BYTE(value, 3); + ak4647_write_reg(AK4647_MODE1, value); + break; + default: + retval = -1; + pr_err("wrong div value for divid %d", div_id); + break; + } + } else if (AK4647_MCLK_CLKDIV == div_id) { + ak4647_read_reg(AK4647_MODE2, &value); + switch (div) { + case AK4647_MCLK_DIV_32: + SET_BIT_IN_BYTE(value, 7); + SET_BIT_IN_BYTE(value, 6); + ak4647_write_reg(AK4647_MODE2, value); + break; + case AK4647_MCLK_DIV_64: + SET_BIT_IN_BYTE(value, 7); + CLEAR_BIT_IN_BYTE(value, 6); + ak4647_write_reg(AK4647_MODE2, value); + break; + case AK4647_MCLK_DIV_128: + CLEAR_BIT_IN_BYTE(value, 7); + SET_BIT_IN_BYTE(value, 6); + ak4647_write_reg(AK4647_MODE2, value); + break; + case AK4647_MCLK_DIV_256: + CLEAR_BIT_IN_BYTE(value, 7); + CLEAR_BIT_IN_BYTE(value, 6); + ak4647_write_reg(AK4647_MODE2, value); + break; + default: + retval = -1; + pr_err("wrong div value for div id %d", div_id); + break; + } + } else { + retval = -1; + pr_err("wrong div id"); + } + + return retval; +} + +static int ak4647_digital_mute(struct snd_soc_dai *dai, int mute) +{ + u8 value; + + ak4647_read_reg(AK4647_MODE3, &value); + + if (mute) + SET_BIT_IN_BYTE(value, 5); + else + CLEAR_BIT_IN_BYTE(value, 5); + ak4647_write_reg(AK4647_MODE3, value); + return 0; +} + +struct ak4647_state_data { + u8 left_capture_vol; + u8 right_capture_vol; +}; +static struct ak4647_state_data ak4647_state; + +static int ak4647_pcm_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + u8 value; + /* for playback, save down capture volume */ + if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { + ak4647_read_reg(AK4647_LEFT_INPUT_VOLUME, &value); + ak4647_state.left_capture_vol = value; + ak4647_read_reg(AK4647_RIGHT_INPUT_VOLUME, &value); + ak4647_state.right_capture_vol = value; + + /* when PMADL=PMADR=0 set IVL &IVR to be 0x91 (0db) */ + ak4647_write_reg(AK4647_LEFT_INPUT_VOLUME, 0x91); + ak4647_write_reg(AK4647_RIGHT_INPUT_VOLUME, 0x91); + } + + /* output digital volume independent */ + ak4647_read_reg(AK4647_MODE3, &value); + CLEAR_BIT_IN_BYTE(value, 4); + ak4647_write_reg(AK4647_MODE3, value); + return 0; +} + +static void ak4647_pcm_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + u8 value; + ak4647_read_reg(AK4647_PM2, &value); + /* mute */ + CLEAR_BIT_IN_BYTE(value, 6); + ak4647_write_reg(AK4647_PM2, value); + + /* after playback, restore capture volume */ + if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { + ak4647_write_reg(AK4647_LEFT_INPUT_VOLUME, + ak4647_state.left_capture_vol); + ak4647_write_reg(AK4647_RIGHT_INPUT_VOLUME, + ak4647_state.right_capture_vol); + } +} + +static int ak4647_pcm_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + u8 value; + + /* VCOM power on */ + ak4647_write_reg(AK4647_PM1, 0x44); + msleep(30); + + ak4647_read_reg(AK4647_PM2, &value); + /* PLL enabled */ + SET_BIT_IN_BYTE(value, 0); + + ak4647_write_reg(AK4647_PM2, value); + /* wait for PLL locked */ + msleep(40); + + /* don't mute */ + SET_BIT_IN_BYTE(value, 6); + ak4647_write_reg(AK4647_PM2, value); + return 0; +} + +struct snd_soc_dai_ops ak4647_ops = { + .prepare = ak4647_pcm_prepare, + .startup = ak4647_pcm_startup, + .shutdown = ak4647_pcm_shutdown, + .digital_mute = ak4647_digital_mute, + .set_fmt = ak4647_set_dai_fmt, + .set_sysclk = ak4647_set_dai_sysclk, + .set_clkdiv = ak4647_set_clkdiv, +}; + +struct snd_soc_dai ak4647_hifi_dai = { + .name = "ak4647", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = AK4647_RATES, + .formats = AK4647_FORMATS, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 2, + .rates = AK4647_RATES, + .formats = AK4647_FORMATS, + }, + .ops = &ak4647_ops, +}; +EXPORT_SYMBOL_GPL(ak4647_hifi_dai); + +static struct snd_soc_codec *ak4647_codec; + +static int ak4647_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = ak4647_codec; + int ret = 0; + + socdev->card->codec = ak4647_codec; + + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + dev_err(&ak4647_i2c_client->dev, "failed to create pcms\n"); + return ret; + } + + /* setup init value for audio path controls here */ + /* enable DAC to headphone */ + ak4647_write_reg(AK4647_MODE4, 0x9); + /* capture source to be LIN2 and RIN2 */ + ak4647_write_reg(AK4647_PM3, 0x6); + /* MPWR pin up */ + ak4647_write_reg(AK4647_SIG1, 0x5); + + /* MCKI = 12M, default audio interface format as "left-justified" */ + ak4647_write_reg(AK4647_MODE1, 0x62); + + /* ALC disabled */ + ak4647_write_reg(AK4647_ALC1, 0x0); + + ak4647_state.left_capture_vol = 0x91; + ak4647_state.right_capture_vol = 0x91; + + snd_soc_add_controls(codec, ak4647_snd_controls, + ARRAY_SIZE(ak4647_snd_controls)); + ak4647_add_widgets(codec); + + ret = snd_soc_init_card(socdev); + if (ret < 0) { + pr_err("ak4647: failed to register card\n"); + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); + return ret; + } + + return 0; +} + +static __devexit int ak4647_i2c_remove(struct i2c_client *client) +{ + struct snd_soc_codec *codec = i2c_get_clientdata(client); + + snd_soc_unregister_dai(&ak4647_hifi_dai); + snd_soc_unregister_codec(codec); + kfree(codec); + ak4647_codec = NULL; + return 0; +} + +static int ak4647_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct snd_soc_codec *codec; + int ret; + u8 val; + + if (ak4647_codec) { + dev_err(&client->dev, + "Multiple AK4647 devices not supported\n"); + return -ENOMEM; + } + + codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); + if (codec == NULL) + return -ENOMEM; + + mutex_init(&codec->mutex); + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + + i2c_set_clientdata(client, codec); + ak4647_i2c_client = client; + codec->control_data = client; + ret = ak4647_read_reg(AK4647_REG_START, &val); + if (ret < 0) { + pr_err("Device with ID register %x is not a AK4647\n", val); + return -ENODEV; + } + + codec->dev = &client->dev; + codec->name = "ak4647", codec->owner = THIS_MODULE; + codec->owner = THIS_MODULE; + codec->read = ak4647_codec_read; + codec->write = ak4647_codec_write; + codec->dai = &ak4647_hifi_dai; + codec->num_dai = 1; + + ak4647_codec = codec; + ak4647_hifi_dai.dev = &client->dev; + + ret = snd_soc_register_codec(codec); + if (ret != 0) { + dev_err(codec->dev, "Failed to register codec: %d\n", ret); + return ret; + } + + ret = snd_soc_register_dai(&ak4647_hifi_dai); + if (ret != 0) { + dev_err(codec->dev, "Failed to register DAIs: %d\n", ret); + return ret; + } + + return ret; +} + +static const struct i2c_device_id ak4647_id[] = { + {"ak4647-i2c", 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, ak4647_id); + +static struct i2c_driver ak4647_i2c_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "ak4647-i2c", + }, + .probe = ak4647_i2c_probe, + .remove = __devexit_p(ak4647_i2c_remove), + .id_table = ak4647_id, +}; + +int pmic_audio_fm_output_enable(bool enable) +{ + u8 val; + if (enable) { + ak4647_set_dai_fmt(NULL, + SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM); + ak4647_set_dai_sysclk(NULL, 0, 44100, 0); + ak4647_set_clkdiv(NULL, 0, 0); + /* VCOM power on */ + ak4647_write_reg(AK4647_PM1, 0x44); + msleep(30); + + ak4647_read_reg(AK4647_PM2, &val); + /* PLL enabled */ + SET_BIT_IN_BYTE(val, 0); + + ak4647_write_reg(AK4647_PM2, val); + /* wait for PLL locked */ + msleep(40); + + /* don't mute */ + SET_BIT_IN_BYTE(val, 6); + ak4647_write_reg(AK4647_PM2, val); + + /* loopback STDO to DAC */ + ak4647_read_reg(AK4647_MODE3, &val); + SET_BIT_IN_BYTE(val, 6); + ak4647_write_reg(AK4647_MODE3, val); + + /* switch to R/L 1 */ + ak4647_read_reg(AK4647_PM3, &val); + CLEAR_BIT_IN_BYTE(val, 1); + CLEAR_BIT_IN_BYTE(val, 2); + ak4647_write_reg(AK4647_PM3, val); + + /* power up ADC */ + ak4647_read_reg(AK4647_PM1, &val); + SET_BIT_IN_BYTE(val, 0); + ak4647_write_reg(AK4647_PM1, val); + ak4647_read_reg(AK4647_PM3, &val); + SET_BIT_IN_BYTE(val, 0); + ak4647_write_reg(AK4647_PM3, val); + + /* power up DAC */ + ak4647_read_reg(AK4647_PM1, &val); + SET_BIT_IN_BYTE(val, 2); + ak4647_write_reg(AK4647_PM1, val); + + msleep(30); + + /* headphone output switch on */ + ak4647_read_reg(AK4647_MODE4, &val); + SET_BIT_IN_BYTE(val, 0); + ak4647_write_reg(AK4647_MODE4, val); + + /* power on headphone amp */ + ak4647_read_reg(AK4647_PM2, &val); + SET_BIT_IN_BYTE(val, 4); + SET_BIT_IN_BYTE(val, 5); + ak4647_write_reg(AK4647_PM2, val); + + ak4647_digital_mute(NULL, 0); + } else { + ak4647_digital_mute(NULL, 1); + + /* disbale loopback */ + ak4647_read_reg(AK4647_MODE3, &val); + CLEAR_BIT_IN_BYTE(val, 6); + SET_BIT_IN_BYTE(val, 5); + ak4647_write_reg(AK4647_MODE3, val); + + /* switch to R/L 2 */ + ak4647_read_reg(AK4647_PM3, &val); + SET_BIT_IN_BYTE(val, 1); + SET_BIT_IN_BYTE(val, 2); + ak4647_write_reg(AK4647_PM3, val); + } + return 0; +} + +static int loopback_xhandle_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = kcontrol->private_value; + return 0; +} + +static int loopback_xhandle_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + int changed; + long flag = ucontrol->value.integer.value[0]; + changed = + (ucontrol->value.integer.value[0] == + kcontrol->private_value) ? 0 : 1; + kcontrol->private_value = flag; + if (flag) + pmic_audio_fm_output_enable(true); + else + pmic_audio_fm_output_enable(false); + + return changed; +} + +/* power down chip */ +static int ak4647_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); + i2c_del_driver(&ak4647_i2c_driver); + kfree(codec); + + return 0; +} + +static int ak4647_suspend(struct platform_device *pdev, pm_message_t state) +{ + return 0; +} + +static int ak4647_resume(struct platform_device *pdev) +{ + return 0; +} + +struct snd_soc_codec_device soc_codec_dev_ak4647 = { + .probe = ak4647_probe, + .remove = ak4647_remove, + .suspend = ak4647_suspend, + .resume = ak4647_resume, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_ak4647); + +static int __init ak4647_modinit(void) +{ + return i2c_add_driver(&ak4647_i2c_driver); +} +module_init(ak4647_modinit); + +static void __exit ak4647_exit(void) +{ + i2c_del_driver(&ak4647_i2c_driver); +} +module_exit(ak4647_exit); + +MODULE_DESCRIPTION("ASoC ak4647 driver"); +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_LICENSE("GPL"); |