| /* |
| * wm8741.c -- WM8741 ALSA SoC Audio driver |
| * |
| * Copyright 2010-1 Wolfson Microelectronics plc |
| * |
| * Author: Ian Lartey <ian@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/spi/spi.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/consumer.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/initval.h> |
| #include <sound/tlv.h> |
| |
| #include "wm8741.h" |
| |
| #define WM8741_NUM_SUPPLIES 2 |
| static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = { |
| "AVDD", |
| "DVDD", |
| }; |
| |
| /* codec private data */ |
| struct wm8741_priv { |
| struct wm8741_platform_data pdata; |
| struct regmap *regmap; |
| struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES]; |
| unsigned int sysclk; |
| const struct snd_pcm_hw_constraint_list *sysclk_constraints; |
| }; |
| |
| static const struct reg_default wm8741_reg_defaults[] = { |
| { 0, 0x0000 }, /* R0 - DACLLSB Attenuation */ |
| { 1, 0x0000 }, /* R1 - DACLMSB Attenuation */ |
| { 2, 0x0000 }, /* R2 - DACRLSB Attenuation */ |
| { 3, 0x0000 }, /* R3 - DACRMSB Attenuation */ |
| { 4, 0x0000 }, /* R4 - Volume Control */ |
| { 5, 0x000A }, /* R5 - Format Control */ |
| { 6, 0x0000 }, /* R6 - Filter Control */ |
| { 7, 0x0000 }, /* R7 - Mode Control 1 */ |
| { 8, 0x0002 }, /* R8 - Mode Control 2 */ |
| { 32, 0x0002 }, /* R32 - ADDITONAL_CONTROL_1 */ |
| }; |
| |
| static int wm8741_reset(struct snd_soc_codec *codec) |
| { |
| return snd_soc_write(codec, WM8741_RESET, 0); |
| } |
| |
| static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, -12700, 13, 0); |
| static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 400, 0); |
| |
| static const struct snd_kcontrol_new wm8741_snd_controls_stereo[] = { |
| SOC_DOUBLE_R_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION, |
| WM8741_DACRLSB_ATTENUATION, 1, 255, 1, dac_tlv_fine), |
| SOC_DOUBLE_R_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION, |
| WM8741_DACRMSB_ATTENUATION, 0, 511, 1, dac_tlv), |
| }; |
| |
| static const struct snd_kcontrol_new wm8741_snd_controls_mono_left[] = { |
| SOC_SINGLE_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION, |
| 1, 255, 1, dac_tlv_fine), |
| SOC_SINGLE_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION, |
| 0, 511, 1, dac_tlv), |
| }; |
| |
| static const struct snd_kcontrol_new wm8741_snd_controls_mono_right[] = { |
| SOC_SINGLE_TLV("Fine Playback Volume", WM8741_DACRLSB_ATTENUATION, |
| 1, 255, 1, dac_tlv_fine), |
| SOC_SINGLE_TLV("Playback Volume", WM8741_DACRMSB_ATTENUATION, |
| 0, 511, 1, dac_tlv), |
| }; |
| |
| static const struct snd_soc_dapm_widget wm8741_dapm_widgets[] = { |
| SND_SOC_DAPM_DAC("DACL", "Playback", SND_SOC_NOPM, 0, 0), |
| SND_SOC_DAPM_DAC("DACR", "Playback", SND_SOC_NOPM, 0, 0), |
| SND_SOC_DAPM_OUTPUT("VOUTLP"), |
| SND_SOC_DAPM_OUTPUT("VOUTLN"), |
| SND_SOC_DAPM_OUTPUT("VOUTRP"), |
| SND_SOC_DAPM_OUTPUT("VOUTRN"), |
| }; |
| |
| static const struct snd_soc_dapm_route wm8741_dapm_routes[] = { |
| { "VOUTLP", NULL, "DACL" }, |
| { "VOUTLN", NULL, "DACL" }, |
| { "VOUTRP", NULL, "DACR" }, |
| { "VOUTRN", NULL, "DACR" }, |
| }; |
| |
| static const unsigned int rates_11289[] = { |
| 44100, 88200, |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_11289 = { |
| .count = ARRAY_SIZE(rates_11289), |
| .list = rates_11289, |
| }; |
| |
| static const unsigned int rates_12288[] = { |
| 32000, 48000, 96000, |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_12288 = { |
| .count = ARRAY_SIZE(rates_12288), |
| .list = rates_12288, |
| }; |
| |
| static const unsigned int rates_16384[] = { |
| 32000, |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_16384 = { |
| .count = ARRAY_SIZE(rates_16384), |
| .list = rates_16384, |
| }; |
| |
| static const unsigned int rates_16934[] = { |
| 44100, 88200, |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_16934 = { |
| .count = ARRAY_SIZE(rates_16934), |
| .list = rates_16934, |
| }; |
| |
| static const unsigned int rates_18432[] = { |
| 48000, 96000, |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_18432 = { |
| .count = ARRAY_SIZE(rates_18432), |
| .list = rates_18432, |
| }; |
| |
| static const unsigned int rates_22579[] = { |
| 44100, 88200, 176400 |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_22579 = { |
| .count = ARRAY_SIZE(rates_22579), |
| .list = rates_22579, |
| }; |
| |
| static const unsigned int rates_24576[] = { |
| 32000, 48000, 96000, 192000 |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_24576 = { |
| .count = ARRAY_SIZE(rates_24576), |
| .list = rates_24576, |
| }; |
| |
| static const unsigned int rates_36864[] = { |
| 48000, 96000, 192000 |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list constraints_36864 = { |
| .count = ARRAY_SIZE(rates_36864), |
| .list = rates_36864, |
| }; |
| |
| static int wm8741_startup(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| |
| if (wm8741->sysclk) |
| snd_pcm_hw_constraint_list(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_RATE, |
| wm8741->sysclk_constraints); |
| |
| return 0; |
| } |
| |
| static int wm8741_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| unsigned int iface; |
| int i; |
| |
| /* The set of sample rates that can be supported depends on the |
| * MCLK supplied to the CODEC - enforce this. |
| */ |
| if (!wm8741->sysclk) { |
| dev_err(codec->dev, |
| "No MCLK configured, call set_sysclk() on init or in hw_params\n"); |
| return -EINVAL; |
| } |
| |
| /* Find a supported LRCLK rate */ |
| for (i = 0; i < wm8741->sysclk_constraints->count; i++) { |
| if (wm8741->sysclk_constraints->list[i] == params_rate(params)) |
| break; |
| } |
| |
| if (i == wm8741->sysclk_constraints->count) { |
| dev_err(codec->dev, "LRCLK %d unsupported with MCLK %d\n", |
| params_rate(params), wm8741->sysclk); |
| return -EINVAL; |
| } |
| |
| /* bit size */ |
| switch (params_width(params)) { |
| case 16: |
| iface = 0x0; |
| break; |
| case 20: |
| iface = 0x1; |
| break; |
| case 24: |
| iface = 0x2; |
| break; |
| case 32: |
| iface = 0x3; |
| break; |
| default: |
| dev_dbg(codec->dev, "wm8741_hw_params: Unsupported bit size param = %d", |
| params_width(params)); |
| return -EINVAL; |
| } |
| |
| dev_dbg(codec->dev, "wm8741_hw_params: bit size param = %d, rate param = %d", |
| params_width(params), params_rate(params)); |
| |
| snd_soc_update_bits(codec, WM8741_FORMAT_CONTROL, WM8741_IWL_MASK, |
| iface); |
| |
| return 0; |
| } |
| |
| static int wm8741_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 wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| |
| dev_dbg(codec->dev, "wm8741_set_dai_sysclk info: freq=%dHz\n", freq); |
| |
| switch (freq) { |
| case 0: |
| wm8741->sysclk_constraints = NULL; |
| break; |
| case 11289600: |
| wm8741->sysclk_constraints = &constraints_11289; |
| break; |
| case 12288000: |
| wm8741->sysclk_constraints = &constraints_12288; |
| break; |
| case 16384000: |
| wm8741->sysclk_constraints = &constraints_16384; |
| break; |
| case 16934400: |
| wm8741->sysclk_constraints = &constraints_16934; |
| break; |
| case 18432000: |
| wm8741->sysclk_constraints = &constraints_18432; |
| break; |
| case 22579200: |
| case 33868800: |
| wm8741->sysclk_constraints = &constraints_22579; |
| break; |
| case 24576000: |
| wm8741->sysclk_constraints = &constraints_24576; |
| break; |
| case 36864000: |
| wm8741->sysclk_constraints = &constraints_36864; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| wm8741->sysclk = freq; |
| return 0; |
| } |
| |
| static int wm8741_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| unsigned int fmt) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| unsigned int iface; |
| |
| /* check master/slave audio interface */ |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBS_CFS: |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* interface format */ |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_I2S: |
| iface = 0x08; |
| break; |
| case SND_SOC_DAIFMT_RIGHT_J: |
| iface = 0x00; |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| iface = 0x04; |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| iface = 0x0C; |
| break; |
| case SND_SOC_DAIFMT_DSP_B: |
| iface = 0x1C; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* clock inversion */ |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| iface |= 0x10; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| iface |= 0x20; |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| iface |= 0x30; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| |
| dev_dbg(codec->dev, "wm8741_set_dai_fmt: Format=%x, Clock Inv=%x\n", |
| fmt & SND_SOC_DAIFMT_FORMAT_MASK, |
| ((fmt & SND_SOC_DAIFMT_INV_MASK))); |
| |
| snd_soc_update_bits(codec, WM8741_FORMAT_CONTROL, |
| WM8741_BCP_MASK | WM8741_LRP_MASK | WM8741_FMT_MASK, |
| iface); |
| |
| return 0; |
| } |
| |
| #define WM8741_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ |
| SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \ |
| SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \ |
| SNDRV_PCM_RATE_192000) |
| |
| #define WM8741_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 wm8741_dai_ops = { |
| .startup = wm8741_startup, |
| .hw_params = wm8741_hw_params, |
| .set_sysclk = wm8741_set_dai_sysclk, |
| .set_fmt = wm8741_set_dai_fmt, |
| }; |
| |
| static struct snd_soc_dai_driver wm8741_dai = { |
| .name = "wm8741", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = WM8741_RATES, |
| .formats = WM8741_FORMATS, |
| }, |
| .ops = &wm8741_dai_ops, |
| }; |
| |
| #ifdef CONFIG_PM |
| static int wm8741_resume(struct snd_soc_codec *codec) |
| { |
| snd_soc_cache_sync(codec); |
| return 0; |
| } |
| #else |
| #define wm8741_resume NULL |
| #endif |
| |
| static int wm8741_configure(struct snd_soc_codec *codec) |
| { |
| struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| |
| /* Configure differential mode */ |
| switch (wm8741->pdata.diff_mode) { |
| case WM8741_DIFF_MODE_STEREO: |
| case WM8741_DIFF_MODE_STEREO_REVERSED: |
| case WM8741_DIFF_MODE_MONO_LEFT: |
| case WM8741_DIFF_MODE_MONO_RIGHT: |
| snd_soc_update_bits(codec, WM8741_MODE_CONTROL_2, |
| WM8741_DIFF_MASK, |
| wm8741->pdata.diff_mode << WM8741_DIFF_SHIFT); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* Change some default settings - latch VU */ |
| snd_soc_update_bits(codec, WM8741_DACLLSB_ATTENUATION, |
| WM8741_UPDATELL, WM8741_UPDATELL); |
| snd_soc_update_bits(codec, WM8741_DACLMSB_ATTENUATION, |
| WM8741_UPDATELM, WM8741_UPDATELM); |
| snd_soc_update_bits(codec, WM8741_DACRLSB_ATTENUATION, |
| WM8741_UPDATERL, WM8741_UPDATERL); |
| snd_soc_update_bits(codec, WM8741_DACRMSB_ATTENUATION, |
| WM8741_UPDATERM, WM8741_UPDATERM); |
| |
| return 0; |
| } |
| |
| static int wm8741_add_controls(struct snd_soc_codec *codec) |
| { |
| struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| |
| switch (wm8741->pdata.diff_mode) { |
| case WM8741_DIFF_MODE_STEREO: |
| case WM8741_DIFF_MODE_STEREO_REVERSED: |
| snd_soc_add_codec_controls(codec, |
| wm8741_snd_controls_stereo, |
| ARRAY_SIZE(wm8741_snd_controls_stereo)); |
| break; |
| case WM8741_DIFF_MODE_MONO_LEFT: |
| snd_soc_add_codec_controls(codec, |
| wm8741_snd_controls_mono_left, |
| ARRAY_SIZE(wm8741_snd_controls_mono_left)); |
| break; |
| case WM8741_DIFF_MODE_MONO_RIGHT: |
| snd_soc_add_codec_controls(codec, |
| wm8741_snd_controls_mono_right, |
| ARRAY_SIZE(wm8741_snd_controls_mono_right)); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int wm8741_probe(struct snd_soc_codec *codec) |
| { |
| struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| int ret = 0; |
| |
| ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies), |
| wm8741->supplies); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); |
| goto err_get; |
| } |
| |
| ret = wm8741_reset(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to issue reset\n"); |
| goto err_enable; |
| } |
| |
| ret = wm8741_configure(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to change default settings\n"); |
| goto err_enable; |
| } |
| |
| ret = wm8741_add_controls(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to add controls\n"); |
| goto err_enable; |
| } |
| |
| dev_dbg(codec->dev, "Successful registration\n"); |
| return ret; |
| |
| err_enable: |
| regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); |
| err_get: |
| return ret; |
| } |
| |
| static int wm8741_remove(struct snd_soc_codec *codec) |
| { |
| struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); |
| |
| regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies); |
| |
| return 0; |
| } |
| |
| static const struct snd_soc_codec_driver soc_codec_dev_wm8741 = { |
| .probe = wm8741_probe, |
| .remove = wm8741_remove, |
| .resume = wm8741_resume, |
| |
| .component_driver = { |
| .dapm_widgets = wm8741_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(wm8741_dapm_widgets), |
| .dapm_routes = wm8741_dapm_routes, |
| .num_dapm_routes = ARRAY_SIZE(wm8741_dapm_routes), |
| }, |
| }; |
| |
| static const struct of_device_id wm8741_of_match[] = { |
| { .compatible = "wlf,wm8741", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, wm8741_of_match); |
| |
| static const struct regmap_config wm8741_regmap = { |
| .reg_bits = 7, |
| .val_bits = 9, |
| .max_register = WM8741_MAX_REGISTER, |
| |
| .reg_defaults = wm8741_reg_defaults, |
| .num_reg_defaults = ARRAY_SIZE(wm8741_reg_defaults), |
| .cache_type = REGCACHE_RBTREE, |
| }; |
| |
| static int wm8741_set_pdata(struct device *dev, struct wm8741_priv *wm8741) |
| { |
| const struct wm8741_platform_data *pdata = dev_get_platdata(dev); |
| u32 diff_mode; |
| |
| if (dev->of_node) { |
| if (of_property_read_u32(dev->of_node, "diff-mode", &diff_mode) |
| >= 0) |
| wm8741->pdata.diff_mode = diff_mode; |
| } else { |
| if (pdata != NULL) |
| memcpy(&wm8741->pdata, pdata, sizeof(wm8741->pdata)); |
| } |
| |
| return 0; |
| } |
| |
| #if IS_ENABLED(CONFIG_I2C) |
| static int wm8741_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct wm8741_priv *wm8741; |
| int ret, i; |
| |
| wm8741 = devm_kzalloc(&i2c->dev, sizeof(struct wm8741_priv), |
| GFP_KERNEL); |
| if (wm8741 == NULL) |
| return -ENOMEM; |
| |
| for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) |
| wm8741->supplies[i].supply = wm8741_supply_names[i]; |
| |
| ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies), |
| wm8741->supplies); |
| if (ret != 0) { |
| dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); |
| return ret; |
| } |
| |
| wm8741->regmap = devm_regmap_init_i2c(i2c, &wm8741_regmap); |
| if (IS_ERR(wm8741->regmap)) { |
| ret = PTR_ERR(wm8741->regmap); |
| dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret); |
| return ret; |
| } |
| |
| ret = wm8741_set_pdata(&i2c->dev, wm8741); |
| if (ret != 0) { |
| dev_err(&i2c->dev, "Failed to set pdata: %d\n", ret); |
| return ret; |
| } |
| |
| i2c_set_clientdata(i2c, wm8741); |
| |
| ret = snd_soc_register_codec(&i2c->dev, |
| &soc_codec_dev_wm8741, &wm8741_dai, 1); |
| |
| return ret; |
| } |
| |
| static int wm8741_i2c_remove(struct i2c_client *client) |
| { |
| snd_soc_unregister_codec(&client->dev); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8741_i2c_id[] = { |
| { "wm8741", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8741_i2c_id); |
| |
| static struct i2c_driver wm8741_i2c_driver = { |
| .driver = { |
| .name = "wm8741", |
| .of_match_table = wm8741_of_match, |
| }, |
| .probe = wm8741_i2c_probe, |
| .remove = wm8741_i2c_remove, |
| .id_table = wm8741_i2c_id, |
| }; |
| #endif |
| |
| #if defined(CONFIG_SPI_MASTER) |
| static int wm8741_spi_probe(struct spi_device *spi) |
| { |
| struct wm8741_priv *wm8741; |
| int ret, i; |
| |
| wm8741 = devm_kzalloc(&spi->dev, sizeof(struct wm8741_priv), |
| GFP_KERNEL); |
| if (wm8741 == NULL) |
| return -ENOMEM; |
| |
| for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++) |
| wm8741->supplies[i].supply = wm8741_supply_names[i]; |
| |
| ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8741->supplies), |
| wm8741->supplies); |
| if (ret != 0) { |
| dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); |
| return ret; |
| } |
| |
| wm8741->regmap = devm_regmap_init_spi(spi, &wm8741_regmap); |
| if (IS_ERR(wm8741->regmap)) { |
| ret = PTR_ERR(wm8741->regmap); |
| dev_err(&spi->dev, "Failed to init regmap: %d\n", ret); |
| return ret; |
| } |
| |
| ret = wm8741_set_pdata(&spi->dev, wm8741); |
| if (ret != 0) { |
| dev_err(&spi->dev, "Failed to set pdata: %d\n", ret); |
| return ret; |
| } |
| |
| spi_set_drvdata(spi, wm8741); |
| |
| ret = snd_soc_register_codec(&spi->dev, |
| &soc_codec_dev_wm8741, &wm8741_dai, 1); |
| return ret; |
| } |
| |
| static int wm8741_spi_remove(struct spi_device *spi) |
| { |
| snd_soc_unregister_codec(&spi->dev); |
| return 0; |
| } |
| |
| static struct spi_driver wm8741_spi_driver = { |
| .driver = { |
| .name = "wm8741", |
| .of_match_table = wm8741_of_match, |
| }, |
| .probe = wm8741_spi_probe, |
| .remove = wm8741_spi_remove, |
| }; |
| #endif /* CONFIG_SPI_MASTER */ |
| |
| static int __init wm8741_modinit(void) |
| { |
| int ret = 0; |
| |
| #if IS_ENABLED(CONFIG_I2C) |
| ret = i2c_add_driver(&wm8741_i2c_driver); |
| if (ret != 0) |
| pr_err("Failed to register WM8741 I2C driver: %d\n", ret); |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| ret = spi_register_driver(&wm8741_spi_driver); |
| if (ret != 0) { |
| printk(KERN_ERR "Failed to register wm8741 SPI driver: %d\n", |
| ret); |
| } |
| #endif |
| |
| return ret; |
| } |
| module_init(wm8741_modinit); |
| |
| static void __exit wm8741_exit(void) |
| { |
| #if defined(CONFIG_SPI_MASTER) |
| spi_unregister_driver(&wm8741_spi_driver); |
| #endif |
| #if IS_ENABLED(CONFIG_I2C) |
| i2c_del_driver(&wm8741_i2c_driver); |
| #endif |
| } |
| module_exit(wm8741_exit); |
| |
| MODULE_DESCRIPTION("ASoC WM8741 driver"); |
| MODULE_AUTHOR("Ian Lartey <ian@opensource.wolfsonmicro.com>"); |
| MODULE_LICENSE("GPL"); |