diff options
Diffstat (limited to 'sound/soc/codecs/wm8737.c')
| -rw-r--r-- | sound/soc/codecs/wm8737.c | 754 |
1 files changed, 754 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c new file mode 100644 index 000000000000..30c67d06a904 --- /dev/null +++ b/sound/soc/codecs/wm8737.c @@ -0,0 +1,754 @@ +/* + * wm8737.c -- WM8737 ALSA SoC Audio driver + * + * Copyright 2010 Wolfson Microelectronics plc + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/spi/spi.h> +#include <linux/slab.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 "wm8737.h" + +#define WM8737_NUM_SUPPLIES 4 +static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = { + "DCVDD", + "DBVDD", + "AVDD", + "MVDD", +}; + +/* codec private data */ +struct wm8737_priv { + enum snd_soc_control_type control_type; + struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES]; + unsigned int mclk; +}; + +static const u16 wm8737_reg[WM8737_REGISTER_COUNT] = { + 0x00C3, /* R0 - Left PGA volume */ + 0x00C3, /* R1 - Right PGA volume */ + 0x0007, /* R2 - AUDIO path L */ + 0x0007, /* R3 - AUDIO path R */ + 0x0000, /* R4 - 3D Enhance */ + 0x0000, /* R5 - ADC Control */ + 0x0000, /* R6 - Power Management */ + 0x000A, /* R7 - Audio Format */ + 0x0000, /* R8 - Clocking */ + 0x000F, /* R9 - MIC Preamp Control */ + 0x0003, /* R10 - Misc Bias Control */ + 0x0000, /* R11 - Noise Gate */ + 0x007C, /* R12 - ALC1 */ + 0x0000, /* R13 - ALC2 */ + 0x0032, /* R14 - ALC3 */ +}; + +static int wm8737_reset(struct snd_soc_codec *codec) +{ + return snd_soc_write(codec, WM8737_RESET, 0); +} + +static const unsigned int micboost_tlv[] = { + TLV_DB_RANGE_HEAD(4), + 0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0), + 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), + 2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0), + 3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0), +}; +static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1); +static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0); +static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0); +static const DECLARE_TLV_DB_SCALE(alc_max_tlv, -1200, 600, 0); +static const DECLARE_TLV_DB_SCALE(alc_target_tlv, -1800, 100, 0); + +static const char *micbias_enum_text[] = { + "25%", + "50%", + "75%", + "100%", +}; + +static const struct soc_enum micbias_enum = + SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 0, 4, micbias_enum_text); + +static const char *low_cutoff_text[] = { + "Low", "High" +}; + +static const struct soc_enum low_3d = + SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 6, 2, low_cutoff_text); + +static const char *high_cutoff_text[] = { + "High", "Low" +}; + +static const struct soc_enum high_3d = + SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 5, 2, high_cutoff_text); + +static const char *alc_fn_text[] = { + "Disabled", "Right", "Left", "Stereo" +}; + +static const struct soc_enum alc_fn = + SOC_ENUM_SINGLE(WM8737_ALC1, 7, 4, alc_fn_text); + +static const char *alc_hold_text[] = { + "0", "2.67ms", "5.33ms", "10.66ms", "21.32ms", "42.64ms", "85.28ms", + "170.56ms", "341.12ms", "682.24ms", "1.364s", "2.728s", "5.458s", + "10.916s", "21.832s", "43.691s" +}; + +static const struct soc_enum alc_hold = + SOC_ENUM_SINGLE(WM8737_ALC2, 0, 16, alc_hold_text); + +static const char *alc_atk_text[] = { + "8.4ms", "16.8ms", "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", + "1.075s", "2.15s", "4.3s", "8.6s" +}; + +static const struct soc_enum alc_atk = + SOC_ENUM_SINGLE(WM8737_ALC3, 0, 11, alc_atk_text); + +static const char *alc_dcy_text[] = { + "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", "1.075s", "2.15s", + "4.3s", "8.6s", "17.2s", "34.41s" +}; + +static const struct soc_enum alc_dcy = + SOC_ENUM_SINGLE(WM8737_ALC3, 4, 11, alc_dcy_text); + +static const struct snd_kcontrol_new wm8737_snd_controls[] = { +SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, + 6, 3, 0, micboost_tlv), +SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, + 4, 1, 0), +SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, + 3, 1, 0), + +SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME, + WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv), +SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, + 2, 1, 0), + +SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0), + +SOC_ENUM("Mic PGA Bias", micbias_enum), +SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0), +SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1), +SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0), + +SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0), +SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0), +SOC_ENUM("3D Low Cut-off", low_3d), +SOC_ENUM("3D High Cut-off", low_3d), +SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv), + +SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0), +SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0, + ng_tlv), + +SOC_ENUM("ALC", alc_fn), +SOC_SINGLE_TLV("ALC Max Gain Volume", WM8737_ALC1, 4, 7, 0, alc_max_tlv), +SOC_SINGLE_TLV("ALC Target Volume", WM8737_ALC1, 0, 15, 0, alc_target_tlv), +SOC_ENUM("ALC Hold Time", alc_hold), +SOC_SINGLE("ALC ZC Switch", WM8737_ALC2, 4, 1, 0), +SOC_ENUM("ALC Attack Time", alc_atk), +SOC_ENUM("ALC Decay Time", alc_dcy), +}; + +static const char *linsel_text[] = { + "LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC", +}; + +static const struct soc_enum linsel_enum = + SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_L, 7, 4, linsel_text); + +static const struct snd_kcontrol_new linsel_mux = + SOC_DAPM_ENUM("LINSEL", linsel_enum); + + +static const char *rinsel_text[] = { + "RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC", +}; + +static const struct soc_enum rinsel_enum = + SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_R, 7, 4, rinsel_text); + +static const struct snd_kcontrol_new rinsel_mux = + SOC_DAPM_ENUM("RINSEL", rinsel_enum); + +static const char *bypass_text[] = { + "Direct", "Preamp" +}; + +static const struct soc_enum lbypass_enum = + SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 2, 2, bypass_text); + +static const struct snd_kcontrol_new lbypass_mux = + SOC_DAPM_ENUM("Left Bypass", lbypass_enum); + + +static const struct soc_enum rbypass_enum = + SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 3, 2, bypass_text); + +static const struct snd_kcontrol_new rbypass_mux = + SOC_DAPM_ENUM("Left Bypass", rbypass_enum); + +static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = { +SND_SOC_DAPM_INPUT("LINPUT1"), +SND_SOC_DAPM_INPUT("LINPUT2"), +SND_SOC_DAPM_INPUT("LINPUT3"), +SND_SOC_DAPM_INPUT("RINPUT1"), +SND_SOC_DAPM_INPUT("RINPUT2"), +SND_SOC_DAPM_INPUT("RINPUT3"), +SND_SOC_DAPM_INPUT("LACIN"), +SND_SOC_DAPM_INPUT("RACIN"), + +SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux), +SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux), + +SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux), +SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux), + +SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0), +SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0), + +SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0), +SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0), + +SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0), +}; + +static const struct snd_soc_dapm_route intercon[] = { + { "LINSEL", "LINPUT1", "LINPUT1" }, + { "LINSEL", "LINPUT2", "LINPUT2" }, + { "LINSEL", "LINPUT3", "LINPUT3" }, + { "LINSEL", "LINPUT1 DC", "LINPUT1" }, + + { "RINSEL", "RINPUT1", "RINPUT1" }, + { "RINSEL", "RINPUT2", "RINPUT2" }, + { "RINSEL", "RINPUT3", "RINPUT3" }, + { "RINSEL", "RINPUT1 DC", "RINPUT1" }, + + { "Left Preamp Mux", "Preamp", "LINSEL" }, + { "Left Preamp Mux", "Direct", "LACIN" }, + + { "Right Preamp Mux", "Preamp", "RINSEL" }, + { "Right Preamp Mux", "Direct", "RACIN" }, + + { "PGAL", NULL, "Left Preamp Mux" }, + { "PGAR", NULL, "Right Preamp Mux" }, + + { "ADCL", NULL, "PGAL" }, + { "ADCR", NULL, "PGAR" }, + + { "AIF", NULL, "ADCL" }, + { "AIF", NULL, "ADCR" }, +}; + +static int wm8737_add_widgets(struct snd_soc_codec *codec) +{ + struct snd_soc_dapm_context *dapm = &codec->dapm; + + snd_soc_dapm_new_controls(dapm, wm8737_dapm_widgets, + ARRAY_SIZE(wm8737_dapm_widgets)); + snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); + + return 0; +} + +/* codec mclk clock divider coefficients */ +static const struct { + u32 mclk; + u32 rate; + u8 usb; + u8 sr; +} coeff_div[] = { + { 12288000, 8000, 0, 0x4 }, + { 12288000, 12000, 0, 0x8 }, + { 12288000, 16000, 0, 0xa }, + { 12288000, 24000, 0, 0x1c }, + { 12288000, 32000, 0, 0xc }, + { 12288000, 48000, 0, 0 }, + { 12288000, 96000, 0, 0xe }, + + { 11289600, 8000, 0, 0x14 }, + { 11289600, 11025, 0, 0x18 }, + { 11289600, 22050, 0, 0x1a }, + { 11289600, 44100, 0, 0x10 }, + { 11289600, 88200, 0, 0x1e }, + + { 18432000, 8000, 0, 0x5 }, + { 18432000, 12000, 0, 0x9 }, + { 18432000, 16000, 0, 0xb }, + { 18432000, 24000, 0, 0x1b }, + { 18432000, 32000, 0, 0xd }, + { 18432000, 48000, 0, 0x1 }, + { 18432000, 96000, 0, 0x1f }, + + { 16934400, 8000, 0, 0x15 }, + { 16934400, 11025, 0, 0x19 }, + { 16934400, 22050, 0, 0x1b }, + { 16934400, 44100, 0, 0x11 }, + { 16934400, 88200, 0, 0x1f }, + + { 12000000, 8000, 1, 0x4 }, + { 12000000, 11025, 1, 0x19 }, + { 12000000, 12000, 1, 0x8 }, + { 12000000, 16000, 1, 0xa }, + { 12000000, 22050, 1, 0x1b }, + { 12000000, 24000, 1, 0x1c }, + { 12000000, 32000, 1, 0xc }, + { 12000000, 44100, 1, 0x11 }, + { 12000000, 48000, 1, 0x0 }, + { 12000000, 88200, 1, 0x1f }, + { 12000000, 96000, 1, 0xe }, +}; + +static int wm8737_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); + int i; + u16 clocking = 0; + u16 af = 0; + + for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { + if (coeff_div[i].rate != params_rate(params)) + continue; + + if (coeff_div[i].mclk == wm8737->mclk) + break; + + if (coeff_div[i].mclk == wm8737->mclk * 2) { + clocking |= WM8737_CLKDIV2; + break; + } + } + + if (i == ARRAY_SIZE(coeff_div)) { + dev_err(codec->dev, "%dHz MCLK can't support %dHz\n", + wm8737->mclk, params_rate(params)); + return -EINVAL; + } + + clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT); + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + break; + case SNDRV_PCM_FORMAT_S20_3LE: + af |= 0x8; + break; + case SNDRV_PCM_FORMAT_S24_LE: + af |= 0x10; + break; + case SNDRV_PCM_FORMAT_S32_LE: + af |= 0x18; + break; + default: + return -EINVAL; + } + + snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af); + snd_soc_update_bits(codec, WM8737_CLOCKING, + WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK, + clocking); + + return 0; +} + +static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); + int i; + + for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { + if (freq == coeff_div[i].mclk || + freq == coeff_div[i].mclk * 2) { + wm8737->mclk = freq; + return 0; + } + } + + dev_err(codec->dev, "MCLK rate %dHz not supported\n", freq); + + return -EINVAL; +} + + +static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + u16 af = 0; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + af |= WM8737_MS; + break; + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + af |= 0x2; + break; + case SND_SOC_DAIFMT_RIGHT_J: + break; + case SND_SOC_DAIFMT_LEFT_J: + af |= 0x1; + break; + case SND_SOC_DAIFMT_DSP_A: + af |= 0x3; + break; + case SND_SOC_DAIFMT_DSP_B: + af |= 0x13; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_NB_IF: + af |= WM8737_LRP; + break; + default: + return -EINVAL; + } + + snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, + WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af); + + return 0; +} + +static int wm8737_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); + int ret; + + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + /* VMID at 2*75k */ + snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, + WM8737_VMIDSEL_MASK, 0); + break; + + case SND_SOC_BIAS_STANDBY: + if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { + ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(codec->dev, + "Failed to enable supplies: %d\n", + ret); + return ret; + } + + snd_soc_cache_sync(codec); + + /* Fast VMID ramp at 2*2.5k */ + snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, + WM8737_VMIDSEL_MASK, 0x4); + + /* Bring VMID up */ + snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT, + WM8737_VMID_MASK | + WM8737_VREF_MASK, + WM8737_VMID_MASK | + WM8737_VREF_MASK); + + msleep(500); + } + + /* VMID at 2*300k */ + snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, + WM8737_VMIDSEL_MASK, 2); + + break; + + case SND_SOC_BIAS_OFF: + snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT, + WM8737_VMID_MASK | WM8737_VREF_MASK, 0); + + regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + break; + } + + codec->dapm.bias_level = level; + return 0; +} + +#define WM8737_RATES SNDRV_PCM_RATE_8000_96000 + +#define WM8737_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_ops wm8737_dai_ops = { + .hw_params = wm8737_hw_params, + .set_sysclk = wm8737_set_dai_sysclk, + .set_fmt = wm8737_set_dai_fmt, +}; + +static struct snd_soc_dai_driver wm8737_dai = { + .name = "wm8737", + .capture = { + .stream_name = "Capture", + .channels_min = 2, /* Mono modes not yet supported */ + .channels_max = 2, + .rates = WM8737_RATES, + .formats = WM8737_FORMATS, + }, + .ops = &wm8737_dai_ops, +}; + +#ifdef CONFIG_PM +static int wm8737_suspend(struct snd_soc_codec *codec, pm_message_t state) +{ + wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF); + return 0; +} + +static int wm8737_resume(struct snd_soc_codec *codec) +{ + wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + return 0; +} +#else +#define wm8737_suspend NULL +#define wm8737_resume NULL +#endif + +static int wm8737_probe(struct snd_soc_codec *codec) +{ + struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); + int ret, i; + + ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8737->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(wm8737->supplies); i++) + wm8737->supplies[i].supply = wm8737_supply_names[i]; + + ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(codec->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + + ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); + goto err_get; + } + + ret = wm8737_reset(codec); + if (ret < 0) { + dev_err(codec->dev, "Failed to issue reset\n"); + goto err_enable; + } + + snd_soc_update_bits(codec, WM8737_LEFT_PGA_VOLUME, WM8737_LVU, + WM8737_LVU); + snd_soc_update_bits(codec, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU, + WM8737_RVU); + + wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + /* Bias level configuration will have done an extra enable */ + regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); + + snd_soc_add_controls(codec, wm8737_snd_controls, + ARRAY_SIZE(wm8737_snd_controls)); + wm8737_add_widgets(codec); + + return 0; + +err_enable: + regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); +err_get: + regulator_bulk_free(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); + + return ret; +} + +static int wm8737_remove(struct snd_soc_codec *codec) +{ + struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); + + wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF); + regulator_bulk_free(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_wm8737 = { + .probe = wm8737_probe, + .remove = wm8737_remove, + .suspend = wm8737_suspend, + .resume = wm8737_resume, + .set_bias_level = wm8737_set_bias_level, + + .reg_cache_size = WM8737_REGISTER_COUNT - 1, /* Skip reset */ + .reg_word_size = sizeof(u16), + .reg_cache_default = wm8737_reg, +}; + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) +static __devinit int wm8737_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct wm8737_priv *wm8737; + int ret; + + wm8737 = kzalloc(sizeof(struct wm8737_priv), GFP_KERNEL); + if (wm8737 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, wm8737); + wm8737->control_type = SND_SOC_I2C; + + ret = snd_soc_register_codec(&i2c->dev, + &soc_codec_dev_wm8737, &wm8737_dai, 1); + if (ret < 0) + kfree(wm8737); + return ret; + +} + +static __devexit int wm8737_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + kfree(i2c_get_clientdata(client)); + return 0; +} + +static const struct i2c_device_id wm8737_i2c_id[] = { + { "wm8737", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id); + +static struct i2c_driver wm8737_i2c_driver = { + .driver = { + .name = "wm8737", + .owner = THIS_MODULE, + }, + .probe = wm8737_i2c_probe, + .remove = __devexit_p(wm8737_i2c_remove), + .id_table = wm8737_i2c_id, +}; +#endif + +#if defined(CONFIG_SPI_MASTER) +static int __devinit wm8737_spi_probe(struct spi_device *spi) +{ + struct wm8737_priv *wm8737; + int ret; + + wm8737 = kzalloc(sizeof(struct wm8737_priv), GFP_KERNEL); + if (wm8737 == NULL) + return -ENOMEM; + + wm8737->control_type = SND_SOC_SPI; + spi_set_drvdata(spi, wm8737); + + ret = snd_soc_register_codec(&spi->dev, + &soc_codec_dev_wm8737, &wm8737_dai, 1); + if (ret < 0) + kfree(wm8737); + return ret; +} + +static int __devexit wm8737_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + kfree(spi_get_drvdata(spi)); + return 0; +} + +static struct spi_driver wm8737_spi_driver = { + .driver = { + .name = "wm8737", + .owner = THIS_MODULE, + }, + .probe = wm8737_spi_probe, + .remove = __devexit_p(wm8737_spi_remove), +}; +#endif /* CONFIG_SPI_MASTER */ + +static int __init wm8737_modinit(void) +{ + int ret; +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + ret = i2c_add_driver(&wm8737_i2c_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n", + ret); + } +#endif +#if defined(CONFIG_SPI_MASTER) + ret = spi_register_driver(&wm8737_spi_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n", + ret); + } +#endif + return 0; +} +module_init(wm8737_modinit); + +static void __exit wm8737_exit(void) +{ +#if defined(CONFIG_SPI_MASTER) + spi_unregister_driver(&wm8737_spi_driver); +#endif +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + i2c_del_driver(&wm8737_i2c_driver); +#endif +} +module_exit(wm8737_exit); + +MODULE_DESCRIPTION("ASoC WM8737 driver"); +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_LICENSE("GPL"); |