summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/wm8776.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/codecs/wm8776.c')
-rw-r--r--sound/soc/codecs/wm8776.c567
1 files changed, 567 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8776.c b/sound/soc/codecs/wm8776.c
new file mode 100644
index 000000000..554acf561
--- /dev/null
+++ b/sound/soc/codecs/wm8776.c
@@ -0,0 +1,567 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * wm8776.c -- WM8776 ALSA SoC Audio driver
+ *
+ * Copyright 2009-12 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * TODO: Input ALC/limiter support
+ */
+
+#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/of_device.h>
+#include <linux/regmap.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/initval.h>
+#include <sound/tlv.h>
+
+#include "wm8776.h"
+
+enum wm8776_chip_type {
+ WM8775 = 1,
+ WM8776,
+};
+
+/* codec private data */
+struct wm8776_priv {
+ struct regmap *regmap;
+ int sysclk[2];
+};
+
+static const struct reg_default wm8776_reg_defaults[] = {
+ { 0, 0x79 },
+ { 1, 0x79 },
+ { 2, 0x79 },
+ { 3, 0xff },
+ { 4, 0xff },
+ { 5, 0xff },
+ { 6, 0x00 },
+ { 7, 0x90 },
+ { 8, 0x00 },
+ { 9, 0x00 },
+ { 10, 0x22 },
+ { 11, 0x22 },
+ { 12, 0x22 },
+ { 13, 0x08 },
+ { 14, 0xcf },
+ { 15, 0xcf },
+ { 16, 0x7b },
+ { 17, 0x00 },
+ { 18, 0x32 },
+ { 19, 0x00 },
+ { 20, 0xa6 },
+ { 21, 0x01 },
+ { 22, 0x01 },
+};
+
+static bool wm8776_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM8776_RESET:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int wm8776_reset(struct snd_soc_component *component)
+{
+ return snd_soc_component_write(component, WM8776_RESET, 0);
+}
+
+static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
+static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
+
+static const struct snd_kcontrol_new wm8776_snd_controls[] = {
+SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
+ 0, 127, 0, hp_tlv),
+SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
+ 0, 255, 0, dac_tlv),
+SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),
+
+SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),
+
+SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
+ 0, 255, 0, adc_tlv),
+SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
+SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
+SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
+};
+
+static const struct snd_kcontrol_new inmix_controls[] = {
+SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
+SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
+SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
+SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
+SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
+};
+
+static const struct snd_kcontrol_new outmix_controls[] = {
+SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
+SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
+SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("AUX"),
+
+SND_SOC_DAPM_INPUT("AIN1"),
+SND_SOC_DAPM_INPUT("AIN2"),
+SND_SOC_DAPM_INPUT("AIN3"),
+SND_SOC_DAPM_INPUT("AIN4"),
+SND_SOC_DAPM_INPUT("AIN5"),
+
+SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
+ inmix_controls, ARRAY_SIZE(inmix_controls)),
+
+SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
+SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),
+
+SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
+ outmix_controls, ARRAY_SIZE(outmix_controls)),
+
+SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),
+
+SND_SOC_DAPM_OUTPUT("VOUT"),
+
+SND_SOC_DAPM_OUTPUT("HPOUTL"),
+SND_SOC_DAPM_OUTPUT("HPOUTR"),
+};
+
+static const struct snd_soc_dapm_route routes[] = {
+ { "Input Mixer", "AIN1 Switch", "AIN1" },
+ { "Input Mixer", "AIN2 Switch", "AIN2" },
+ { "Input Mixer", "AIN3 Switch", "AIN3" },
+ { "Input Mixer", "AIN4 Switch", "AIN4" },
+ { "Input Mixer", "AIN5 Switch", "AIN5" },
+
+ { "ADC", NULL, "Input Mixer" },
+
+ { "Output Mixer", "DAC Switch", "DAC" },
+ { "Output Mixer", "AUX Switch", "AUX" },
+ { "Output Mixer", "Bypass Switch", "Input Mixer" },
+
+ { "VOUT", NULL, "Output Mixer" },
+
+ { "Headphone PGA", NULL, "Output Mixer" },
+
+ { "HPOUTL", NULL, "Headphone PGA" },
+ { "HPOUTR", NULL, "Headphone PGA" },
+};
+
+static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ int reg, iface, master;
+
+ switch (dai->driver->id) {
+ case WM8776_DAI_DAC:
+ reg = WM8776_DACIFCTRL;
+ master = 0x80;
+ break;
+ case WM8776_DAI_ADC:
+ reg = WM8776_ADCIFCTRL;
+ master = 0x100;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ iface = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ master = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ iface |= 0x0002;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ iface |= 0x0001;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ iface |= 0x00c;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ iface |= 0x008;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ iface |= 0x004;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Finally, write out the values */
+ snd_soc_component_update_bits(component, reg, 0xf, iface);
+ snd_soc_component_update_bits(component, WM8776_MSTRCTRL, 0x180, master);
+
+ return 0;
+}
+
+static int mclk_ratios[] = {
+ 128,
+ 192,
+ 256,
+ 384,
+ 512,
+ 768,
+};
+
+static int wm8776_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 wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component);
+ int iface_reg, iface;
+ int ratio_shift, master;
+ int i;
+
+ switch (dai->driver->id) {
+ case WM8776_DAI_DAC:
+ iface_reg = WM8776_DACIFCTRL;
+ master = 0x80;
+ ratio_shift = 4;
+ break;
+ case WM8776_DAI_ADC:
+ iface_reg = WM8776_ADCIFCTRL;
+ master = 0x100;
+ ratio_shift = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Set word length */
+ switch (params_width(params)) {
+ case 16:
+ iface = 0;
+ break;
+ case 20:
+ iface = 0x10;
+ break;
+ case 24:
+ iface = 0x20;
+ break;
+ case 32:
+ iface = 0x30;
+ break;
+ default:
+ dev_err(component->dev, "Unsupported sample size: %i\n",
+ params_width(params));
+ return -EINVAL;
+ }
+
+ /* Only need to set MCLK/LRCLK ratio if we're master */
+ if (snd_soc_component_read(component, WM8776_MSTRCTRL) & master) {
+ for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
+ if (wm8776->sysclk[dai->driver->id] / params_rate(params)
+ == mclk_ratios[i])
+ break;
+ }
+
+ if (i == ARRAY_SIZE(mclk_ratios)) {
+ dev_err(component->dev,
+ "Unable to configure MCLK ratio %d/%d\n",
+ wm8776->sysclk[dai->driver->id], params_rate(params));
+ return -EINVAL;
+ }
+
+ dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]);
+
+ snd_soc_component_update_bits(component, WM8776_MSTRCTRL,
+ 0x7 << ratio_shift, i << ratio_shift);
+ } else {
+ dev_dbg(component->dev, "DAI in slave mode\n");
+ }
+
+ snd_soc_component_update_bits(component, iface_reg, 0x30, iface);
+
+ return 0;
+}
+
+static int wm8776_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+
+ return snd_soc_component_write(component, WM8776_DACMUTE, !!mute);
+}
+
+static int wm8776_set_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_component *component = dai->component;
+ struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component);
+
+ if (WARN_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)))
+ return -EINVAL;
+
+ wm8776->sysclk[dai->driver->id] = freq;
+
+ return 0;
+}
+
+static int wm8776_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
+ regcache_sync(wm8776->regmap);
+
+ /* Disable the global powerdown; DAPM does the rest */
+ snd_soc_component_update_bits(component, WM8776_PWRDOWN, 1, 0);
+ }
+
+ break;
+ case SND_SOC_BIAS_OFF:
+ snd_soc_component_update_bits(component, WM8776_PWRDOWN, 1, 1);
+ break;
+ }
+
+ return 0;
+}
+
+#define WM8776_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 wm8776_dac_ops = {
+ .mute_stream = wm8776_mute,
+ .hw_params = wm8776_hw_params,
+ .set_fmt = wm8776_set_fmt,
+ .set_sysclk = wm8776_set_sysclk,
+ .no_capture_mute = 1,
+};
+
+static const struct snd_soc_dai_ops wm8776_adc_ops = {
+ .hw_params = wm8776_hw_params,
+ .set_fmt = wm8776_set_fmt,
+ .set_sysclk = wm8776_set_sysclk,
+};
+
+static struct snd_soc_dai_driver wm8776_dai[] = {
+ {
+ .name = "wm8776-hifi-playback",
+ .id = WM8776_DAI_DAC,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 32000,
+ .rate_max = 192000,
+ .formats = WM8776_FORMATS,
+ },
+ .ops = &wm8776_dac_ops,
+ },
+ {
+ .name = "wm8776-hifi-capture",
+ .id = WM8776_DAI_ADC,
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 32000,
+ .rate_max = 96000,
+ .formats = WM8776_FORMATS,
+ },
+ .ops = &wm8776_adc_ops,
+ },
+};
+
+static int wm8776_probe(struct snd_soc_component *component)
+{
+ int ret = 0;
+
+ ret = wm8776_reset(component);
+ if (ret < 0) {
+ dev_err(component->dev, "Failed to issue reset: %d\n", ret);
+ return ret;
+ }
+
+ /* Latch the update bits; right channel only since we always
+ * update both. */
+ snd_soc_component_update_bits(component, WM8776_HPRVOL, 0x100, 0x100);
+ snd_soc_component_update_bits(component, WM8776_DACRVOL, 0x100, 0x100);
+
+ return ret;
+}
+
+static const struct snd_soc_component_driver soc_component_dev_wm8776 = {
+ .probe = wm8776_probe,
+ .set_bias_level = wm8776_set_bias_level,
+ .controls = wm8776_snd_controls,
+ .num_controls = ARRAY_SIZE(wm8776_snd_controls),
+ .dapm_widgets = wm8776_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
+ .dapm_routes = routes,
+ .num_dapm_routes = ARRAY_SIZE(routes),
+ .suspend_bias_off = 1,
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
+static const struct of_device_id wm8776_of_match[] = {
+ { .compatible = "wlf,wm8776", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, wm8776_of_match);
+
+static const struct regmap_config wm8776_regmap = {
+ .reg_bits = 7,
+ .val_bits = 9,
+ .max_register = WM8776_RESET,
+
+ .reg_defaults = wm8776_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8776_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+
+ .volatile_reg = wm8776_volatile,
+};
+
+#if defined(CONFIG_SPI_MASTER)
+static int wm8776_spi_probe(struct spi_device *spi)
+{
+ struct wm8776_priv *wm8776;
+ int ret;
+
+ wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
+ GFP_KERNEL);
+ if (wm8776 == NULL)
+ return -ENOMEM;
+
+ wm8776->regmap = devm_regmap_init_spi(spi, &wm8776_regmap);
+ if (IS_ERR(wm8776->regmap))
+ return PTR_ERR(wm8776->regmap);
+
+ spi_set_drvdata(spi, wm8776);
+
+ ret = devm_snd_soc_register_component(&spi->dev,
+ &soc_component_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
+
+ return ret;
+}
+
+static struct spi_driver wm8776_spi_driver = {
+ .driver = {
+ .name = "wm8776",
+ .of_match_table = wm8776_of_match,
+ },
+ .probe = wm8776_spi_probe,
+};
+#endif /* CONFIG_SPI_MASTER */
+
+#if IS_ENABLED(CONFIG_I2C)
+static int wm8776_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8776_priv *wm8776;
+ int ret;
+
+ wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
+ GFP_KERNEL);
+ if (wm8776 == NULL)
+ return -ENOMEM;
+
+ wm8776->regmap = devm_regmap_init_i2c(i2c, &wm8776_regmap);
+ if (IS_ERR(wm8776->regmap))
+ return PTR_ERR(wm8776->regmap);
+
+ i2c_set_clientdata(i2c, wm8776);
+
+ ret = devm_snd_soc_register_component(&i2c->dev,
+ &soc_component_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
+
+ return ret;
+}
+
+static const struct i2c_device_id wm8776_i2c_id[] = {
+ { "wm8775", WM8775 },
+ { "wm8776", WM8776 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
+
+static struct i2c_driver wm8776_i2c_driver = {
+ .driver = {
+ .name = "wm8776",
+ .of_match_table = wm8776_of_match,
+ },
+ .probe = wm8776_i2c_probe,
+ .id_table = wm8776_i2c_id,
+};
+#endif
+
+static int __init wm8776_modinit(void)
+{
+ int ret = 0;
+#if IS_ENABLED(CONFIG_I2C)
+ ret = i2c_add_driver(&wm8776_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
+ ret);
+ }
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ ret = spi_register_driver(&wm8776_spi_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",
+ ret);
+ }
+#endif
+ return ret;
+}
+module_init(wm8776_modinit);
+
+static void __exit wm8776_exit(void)
+{
+#if IS_ENABLED(CONFIG_I2C)
+ i2c_del_driver(&wm8776_i2c_driver);
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ spi_unregister_driver(&wm8776_spi_driver);
+#endif
+}
+module_exit(wm8776_exit);
+
+MODULE_DESCRIPTION("ASoC WM8776 driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 03:39:37 +0000