diff options
Diffstat (limited to '')
-rw-r--r-- | sound/soc/codecs/wm8737.c | 733 |
1 files changed, 733 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c new file mode 100644 index 0000000000..0d231c289e --- /dev/null +++ b/sound/soc/codecs/wm8737.c @@ -0,0 +1,733 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * wm8737.c -- WM8737 ALSA SoC Audio driver + * + * Copyright 2010 Wolfson Microelectronics plc + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + */ + +#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/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/spi/spi.h> +#include <linux/slab.h> +#include <linux/of_device.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 { + struct regmap *regmap; + struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES]; + unsigned int mclk; +}; + +static const struct reg_default wm8737_reg_defaults[] = { + { 0, 0x00C3 }, /* R0 - Left PGA volume */ + { 1, 0x00C3 }, /* R1 - Right PGA volume */ + { 2, 0x0007 }, /* R2 - AUDIO path L */ + { 3, 0x0007 }, /* R3 - AUDIO path R */ + { 4, 0x0000 }, /* R4 - 3D Enhance */ + { 5, 0x0000 }, /* R5 - ADC Control */ + { 6, 0x0000 }, /* R6 - Power Management */ + { 7, 0x000A }, /* R7 - Audio Format */ + { 8, 0x0000 }, /* R8 - Clocking */ + { 9, 0x000F }, /* R9 - MIC Preamp Control */ + { 10, 0x0003 }, /* R10 - Misc Bias Control */ + { 11, 0x0000 }, /* R11 - Noise Gate */ + { 12, 0x007C }, /* R12 - ALC1 */ + { 13, 0x0000 }, /* R13 - ALC2 */ + { 14, 0x0032 }, /* R14 - ALC3 */ +}; + +static bool wm8737_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM8737_RESET: + return true; + default: + return false; + } +} + +static int wm8737_reset(struct snd_soc_component *component) +{ + return snd_soc_component_write(component, WM8737_RESET, 0); +} + +static const DECLARE_TLV_DB_RANGE(micboost_tlv, + 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 SOC_ENUM_SINGLE_DECL(micbias_enum, + WM8737_MIC_PREAMP_CONTROL, 0, micbias_enum_text); + +static const char *low_cutoff_text[] = { + "Low", "High" +}; + +static SOC_ENUM_SINGLE_DECL(low_3d, + WM8737_3D_ENHANCE, 6, low_cutoff_text); + +static const char *high_cutoff_text[] = { + "High", "Low" +}; + +static SOC_ENUM_SINGLE_DECL(high_3d, + WM8737_3D_ENHANCE, 5, high_cutoff_text); + +static const char *alc_fn_text[] = { + "Disabled", "Right", "Left", "Stereo" +}; + +static SOC_ENUM_SINGLE_DECL(alc_fn, + WM8737_ALC1, 7, 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 SOC_ENUM_SINGLE_DECL(alc_hold, + WM8737_ALC2, 0, 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 SOC_ENUM_SINGLE_DECL(alc_atk, + WM8737_ALC3, 0, 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 SOC_ENUM_SINGLE_DECL(alc_dcy, + WM8737_ALC3, 4, 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", high_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 SOC_ENUM_SINGLE_DECL(linsel_enum, + WM8737_AUDIO_PATH_L, 7, 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 SOC_ENUM_SINGLE_DECL(rinsel_enum, + WM8737_AUDIO_PATH_R, 7, rinsel_text); + +static const struct snd_kcontrol_new rinsel_mux = + SOC_DAPM_ENUM("RINSEL", rinsel_enum); + +static const char *bypass_text[] = { + "Direct", "Preamp" +}; + +static SOC_ENUM_SINGLE_DECL(lbypass_enum, + WM8737_MIC_PREAMP_CONTROL, 2, bypass_text); + +static const struct snd_kcontrol_new lbypass_mux = + SOC_DAPM_ENUM("Left Bypass", lbypass_enum); + + +static SOC_ENUM_SINGLE_DECL(rbypass_enum, + WM8737_MIC_PREAMP_CONTROL, 3, 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" }, +}; + +/* 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_component *component = dai->component; + struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); + 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(component->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_width(params)) { + case 16: + break; + case 20: + af |= 0x8; + break; + case 24: + af |= 0x10; + break; + case 32: + af |= 0x18; + break; + default: + return -EINVAL; + } + + snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af); + snd_soc_component_update_bits(component, 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_component *component = codec_dai->component; + struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); + 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(component->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_component *component = codec_dai->component; + 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_component_update_bits(component, WM8737_AUDIO_FORMAT, + WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af); + + return 0; +} + +static int wm8737_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); + int ret; + + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + /* VMID at 2*75k */ + snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL, + WM8737_VMIDSEL_MASK, 0); + break; + + case SND_SOC_BIAS_STANDBY: + if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { + ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(component->dev, + "Failed to enable supplies: %d\n", + ret); + return ret; + } + + regcache_sync(wm8737->regmap); + + /* Fast VMID ramp at 2*2.5k */ + snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL, + WM8737_VMIDSEL_MASK, + 2 << WM8737_VMIDSEL_SHIFT); + + /* Bring VMID up */ + snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT, + WM8737_VMID_MASK | + WM8737_VREF_MASK, + WM8737_VMID_MASK | + WM8737_VREF_MASK); + + msleep(500); + } + + /* VMID at 2*300k */ + snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL, + WM8737_VMIDSEL_MASK, + 1 << WM8737_VMIDSEL_SHIFT); + + break; + + case SND_SOC_BIAS_OFF: + snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT, + WM8737_VMID_MASK | WM8737_VREF_MASK, 0); + + regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + break; + } + + 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 const 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, +}; + +static int wm8737_probe(struct snd_soc_component *component) +{ + struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(component->dev, "Failed to enable supplies: %d\n", ret); + goto err_get; + } + + ret = wm8737_reset(component); + if (ret < 0) { + dev_err(component->dev, "Failed to issue reset\n"); + goto err_enable; + } + + snd_soc_component_update_bits(component, WM8737_LEFT_PGA_VOLUME, WM8737_LVU, + WM8737_LVU); + snd_soc_component_update_bits(component, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU, + WM8737_RVU); + + snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); + + /* Bias level configuration will have done an extra enable */ + regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); + + return 0; + +err_enable: + regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); +err_get: + return ret; +} + +static const struct snd_soc_component_driver soc_component_dev_wm8737 = { + .probe = wm8737_probe, + .set_bias_level = wm8737_set_bias_level, + .controls = wm8737_snd_controls, + .num_controls = ARRAY_SIZE(wm8737_snd_controls), + .dapm_widgets = wm8737_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm8737_dapm_widgets), + .dapm_routes = intercon, + .num_dapm_routes = ARRAY_SIZE(intercon), + .suspend_bias_off = 1, + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +static const struct of_device_id wm8737_of_match[] = { + { .compatible = "wlf,wm8737", }, + { } +}; + +MODULE_DEVICE_TABLE(of, wm8737_of_match); + +static const struct regmap_config wm8737_regmap = { + .reg_bits = 7, + .val_bits = 9, + .max_register = WM8737_MAX_REGISTER, + + .reg_defaults = wm8737_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8737_reg_defaults), + .cache_type = REGCACHE_MAPLE, + + .volatile_reg = wm8737_volatile, +}; + +#if IS_ENABLED(CONFIG_I2C) +static int wm8737_i2c_probe(struct i2c_client *i2c) +{ + struct wm8737_priv *wm8737; + int ret, i; + + wm8737 = devm_kzalloc(&i2c->dev, sizeof(struct wm8737_priv), + GFP_KERNEL); + if (wm8737 == NULL) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++) + wm8737->supplies[i].supply = wm8737_supply_names[i]; + + ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + + wm8737->regmap = devm_regmap_init_i2c(i2c, &wm8737_regmap); + if (IS_ERR(wm8737->regmap)) + return PTR_ERR(wm8737->regmap); + + i2c_set_clientdata(i2c, wm8737); + + ret = devm_snd_soc_register_component(&i2c->dev, + &soc_component_dev_wm8737, &wm8737_dai, 1); + + return ret; + +} + +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", + .of_match_table = wm8737_of_match, + }, + .probe = wm8737_i2c_probe, + .id_table = wm8737_i2c_id, +}; +#endif + +#if defined(CONFIG_SPI_MASTER) +static int wm8737_spi_probe(struct spi_device *spi) +{ + struct wm8737_priv *wm8737; + int ret, i; + + wm8737 = devm_kzalloc(&spi->dev, sizeof(struct wm8737_priv), + GFP_KERNEL); + if (wm8737 == NULL) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++) + wm8737->supplies[i].supply = wm8737_supply_names[i]; + + ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8737->supplies), + wm8737->supplies); + if (ret != 0) { + dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + + wm8737->regmap = devm_regmap_init_spi(spi, &wm8737_regmap); + if (IS_ERR(wm8737->regmap)) + return PTR_ERR(wm8737->regmap); + + spi_set_drvdata(spi, wm8737); + + ret = devm_snd_soc_register_component(&spi->dev, + &soc_component_dev_wm8737, &wm8737_dai, 1); + + return ret; +} + +static struct spi_driver wm8737_spi_driver = { + .driver = { + .name = "wm8737", + .of_match_table = wm8737_of_match, + }, + .probe = wm8737_spi_probe, +}; +#endif /* CONFIG_SPI_MASTER */ + +static int __init wm8737_modinit(void) +{ + int ret; +#if IS_ENABLED(CONFIG_I2C) + 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 IS_ENABLED(CONFIG_I2C) + 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"); |