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-rw-r--r--sound/soc/codecs/wm8741.c708
1 files changed, 708 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c
new file mode 100644
index 0000000000..19e8fc4062
--- /dev/null
+++ b/sound/soc/codecs/wm8741.c
@@ -0,0 +1,708 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * wm8741.c -- WM8741 ALSA SoC Audio driver
+ *
+ * Copyright 2010-1 Wolfson Microelectronics plc
+ *
+ * Author: Ian Lartey <ian@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/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_component *component)
+{
+ return snd_soc_component_write(component, 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_component *component = dai->component;
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+
+ 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_component *component = dai->component;
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+ unsigned int iface, mode;
+ 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(component->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(component->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(component->dev, "wm8741_hw_params: Unsupported bit size param = %d",
+ params_width(params));
+ return -EINVAL;
+ }
+
+ /* oversampling rate */
+ if (params_rate(params) > 96000)
+ mode = 0x40;
+ else if (params_rate(params) > 48000)
+ mode = 0x20;
+ else
+ mode = 0x00;
+
+ dev_dbg(component->dev, "wm8741_hw_params: bit size param = %d, rate param = %d",
+ params_width(params), params_rate(params));
+
+ snd_soc_component_update_bits(component, WM8741_FORMAT_CONTROL, WM8741_IWL_MASK,
+ iface);
+ snd_soc_component_update_bits(component, WM8741_MODE_CONTROL_1, WM8741_OSR_MASK,
+ mode);
+
+ 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_component *component = codec_dai->component;
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+
+ dev_dbg(component->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_component *component = codec_dai->component;
+ 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(component->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_component_update_bits(component, WM8741_FORMAT_CONTROL,
+ WM8741_BCP_MASK | WM8741_LRP_MASK | WM8741_FMT_MASK,
+ iface);
+
+ return 0;
+}
+
+static int wm8741_mute(struct snd_soc_dai *codec_dai, int mute, int direction)
+{
+ struct snd_soc_component *component = codec_dai->component;
+
+ snd_soc_component_update_bits(component, WM8741_VOLUME_CONTROL,
+ WM8741_SOFT_MASK, !!mute << WM8741_SOFT_SHIFT);
+ 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,
+ .mute_stream = wm8741_mute,
+ .no_capture_mute = 1,
+};
+
+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_component *component)
+{
+ snd_soc_component_cache_sync(component);
+ return 0;
+}
+#else
+#define wm8741_resume NULL
+#endif
+
+static int wm8741_configure(struct snd_soc_component *component)
+{
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+
+ /* 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_component_update_bits(component, 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_component_update_bits(component, WM8741_DACLLSB_ATTENUATION,
+ WM8741_UPDATELL, WM8741_UPDATELL);
+ snd_soc_component_update_bits(component, WM8741_DACLMSB_ATTENUATION,
+ WM8741_UPDATELM, WM8741_UPDATELM);
+ snd_soc_component_update_bits(component, WM8741_DACRLSB_ATTENUATION,
+ WM8741_UPDATERL, WM8741_UPDATERL);
+ snd_soc_component_update_bits(component, WM8741_DACRMSB_ATTENUATION,
+ WM8741_UPDATERM, WM8741_UPDATERM);
+
+ return 0;
+}
+
+static int wm8741_add_controls(struct snd_soc_component *component)
+{
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+
+ switch (wm8741->pdata.diff_mode) {
+ case WM8741_DIFF_MODE_STEREO:
+ case WM8741_DIFF_MODE_STEREO_REVERSED:
+ snd_soc_add_component_controls(component,
+ wm8741_snd_controls_stereo,
+ ARRAY_SIZE(wm8741_snd_controls_stereo));
+ break;
+ case WM8741_DIFF_MODE_MONO_LEFT:
+ snd_soc_add_component_controls(component,
+ wm8741_snd_controls_mono_left,
+ ARRAY_SIZE(wm8741_snd_controls_mono_left));
+ break;
+ case WM8741_DIFF_MODE_MONO_RIGHT:
+ snd_soc_add_component_controls(component,
+ 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_component *component)
+{
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies),
+ wm8741->supplies);
+ if (ret != 0) {
+ dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
+ goto err_get;
+ }
+
+ ret = wm8741_reset(component);
+ if (ret < 0) {
+ dev_err(component->dev, "Failed to issue reset\n");
+ goto err_enable;
+ }
+
+ ret = wm8741_configure(component);
+ if (ret < 0) {
+ dev_err(component->dev, "Failed to change default settings\n");
+ goto err_enable;
+ }
+
+ ret = wm8741_add_controls(component);
+ if (ret < 0) {
+ dev_err(component->dev, "Failed to add controls\n");
+ goto err_enable;
+ }
+
+ dev_dbg(component->dev, "Successful registration\n");
+ return ret;
+
+err_enable:
+ regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
+err_get:
+ return ret;
+}
+
+static void wm8741_remove(struct snd_soc_component *component)
+{
+ struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
+
+ regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
+}
+
+static const struct snd_soc_component_driver soc_component_dev_wm8741 = {
+ .probe = wm8741_probe,
+ .remove = wm8741_remove,
+ .resume = wm8741_resume,
+ .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),
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+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_MAPLE,
+};
+
+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)
+{
+ 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 = devm_snd_soc_register_component(&i2c->dev,
+ &soc_component_dev_wm8741, &wm8741_dai, 1);
+
+ return ret;
+}
+
+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,
+ .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 = devm_snd_soc_register_component(&spi->dev,
+ &soc_component_dev_wm8741, &wm8741_dai, 1);
+ return ret;
+}
+
+static struct spi_driver wm8741_spi_driver = {
+ .driver = {
+ .name = "wm8741",
+ .of_match_table = wm8741_of_match,
+ },
+ .probe = wm8741_spi_probe,
+};
+#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");