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567 lines
13 KiB
567 lines
13 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* wm8776.c -- WM8776 ALSA SoC Audio driver |
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* |
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* Copyright 2009-12 Wolfson Microelectronics plc |
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* |
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* Author: Mark Brown <[email protected]> |
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* |
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* TODO: Input ALC/limiter support |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/pm.h> |
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#include <linux/i2c.h> |
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#include <linux/of_device.h> |
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#include <linux/regmap.h> |
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#include <linux/spi/spi.h> |
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#include <linux/slab.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/initval.h> |
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#include <sound/tlv.h> |
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#include "wm8776.h" |
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|
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enum wm8776_chip_type { |
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WM8775 = 1, |
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WM8776, |
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}; |
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|
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/* codec private data */ |
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struct wm8776_priv { |
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struct regmap *regmap; |
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int sysclk[2]; |
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}; |
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static const struct reg_default wm8776_reg_defaults[] = { |
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{ 0, 0x79 }, |
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{ 1, 0x79 }, |
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{ 2, 0x79 }, |
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{ 3, 0xff }, |
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{ 4, 0xff }, |
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{ 5, 0xff }, |
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{ 6, 0x00 }, |
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{ 7, 0x90 }, |
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{ 8, 0x00 }, |
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{ 9, 0x00 }, |
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{ 10, 0x22 }, |
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{ 11, 0x22 }, |
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{ 12, 0x22 }, |
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{ 13, 0x08 }, |
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{ 14, 0xcf }, |
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{ 15, 0xcf }, |
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{ 16, 0x7b }, |
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{ 17, 0x00 }, |
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{ 18, 0x32 }, |
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{ 19, 0x00 }, |
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{ 20, 0xa6 }, |
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{ 21, 0x01 }, |
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{ 22, 0x01 }, |
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}; |
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static bool wm8776_volatile(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case WM8776_RESET: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static int wm8776_reset(struct snd_soc_component *component) |
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{ |
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return snd_soc_component_write(component, WM8776_RESET, 0); |
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} |
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static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1); |
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static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); |
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1); |
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static const struct snd_kcontrol_new wm8776_snd_controls[] = { |
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SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL, |
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0, 127, 0, hp_tlv), |
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SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL, |
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0, 255, 0, dac_tlv), |
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SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0), |
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SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0), |
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SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL, |
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0, 255, 0, adc_tlv), |
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SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1), |
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SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0), |
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SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1), |
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}; |
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static const struct snd_kcontrol_new inmix_controls[] = { |
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SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0), |
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SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0), |
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SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0), |
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SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0), |
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SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0), |
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}; |
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static const struct snd_kcontrol_new outmix_controls[] = { |
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SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0), |
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SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0), |
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SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0), |
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}; |
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static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = { |
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SND_SOC_DAPM_INPUT("AUX"), |
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SND_SOC_DAPM_INPUT("AIN1"), |
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SND_SOC_DAPM_INPUT("AIN2"), |
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SND_SOC_DAPM_INPUT("AIN3"), |
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SND_SOC_DAPM_INPUT("AIN4"), |
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SND_SOC_DAPM_INPUT("AIN5"), |
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SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1, |
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inmix_controls, ARRAY_SIZE(inmix_controls)), |
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SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1), |
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SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1), |
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SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, |
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outmix_controls, ARRAY_SIZE(outmix_controls)), |
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SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0), |
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SND_SOC_DAPM_OUTPUT("VOUT"), |
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SND_SOC_DAPM_OUTPUT("HPOUTL"), |
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SND_SOC_DAPM_OUTPUT("HPOUTR"), |
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}; |
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static const struct snd_soc_dapm_route routes[] = { |
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{ "Input Mixer", "AIN1 Switch", "AIN1" }, |
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{ "Input Mixer", "AIN2 Switch", "AIN2" }, |
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{ "Input Mixer", "AIN3 Switch", "AIN3" }, |
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{ "Input Mixer", "AIN4 Switch", "AIN4" }, |
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{ "Input Mixer", "AIN5 Switch", "AIN5" }, |
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{ "ADC", NULL, "Input Mixer" }, |
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{ "Output Mixer", "DAC Switch", "DAC" }, |
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{ "Output Mixer", "AUX Switch", "AUX" }, |
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{ "Output Mixer", "Bypass Switch", "Input Mixer" }, |
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{ "VOUT", NULL, "Output Mixer" }, |
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{ "Headphone PGA", NULL, "Output Mixer" }, |
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{ "HPOUTL", NULL, "Headphone PGA" }, |
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{ "HPOUTR", NULL, "Headphone PGA" }, |
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}; |
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static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
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{ |
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struct snd_soc_component *component = dai->component; |
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int reg, iface, master; |
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switch (dai->driver->id) { |
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case WM8776_DAI_DAC: |
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reg = WM8776_DACIFCTRL; |
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master = 0x80; |
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break; |
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case WM8776_DAI_ADC: |
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reg = WM8776_ADCIFCTRL; |
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master = 0x100; |
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break; |
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default: |
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return -EINVAL; |
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} |
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iface = 0; |
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBM_CFM: |
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break; |
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case SND_SOC_DAIFMT_CBS_CFS: |
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master = 0; |
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break; |
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default: |
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return -EINVAL; |
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} |
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
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case SND_SOC_DAIFMT_I2S: |
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iface |= 0x0002; |
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break; |
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case SND_SOC_DAIFMT_RIGHT_J: |
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break; |
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case SND_SOC_DAIFMT_LEFT_J: |
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iface |= 0x0001; |
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break; |
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default: |
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return -EINVAL; |
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} |
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
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case SND_SOC_DAIFMT_NB_NF: |
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break; |
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case SND_SOC_DAIFMT_IB_IF: |
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iface |= 0x00c; |
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break; |
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case SND_SOC_DAIFMT_IB_NF: |
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iface |= 0x008; |
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break; |
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case SND_SOC_DAIFMT_NB_IF: |
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iface |= 0x004; |
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break; |
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default: |
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return -EINVAL; |
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} |
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/* Finally, write out the values */ |
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snd_soc_component_update_bits(component, reg, 0xf, iface); |
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snd_soc_component_update_bits(component, WM8776_MSTRCTRL, 0x180, master); |
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return 0; |
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} |
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static int mclk_ratios[] = { |
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128, |
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192, |
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256, |
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384, |
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512, |
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768, |
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}; |
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static int wm8776_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component); |
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int iface_reg, iface; |
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int ratio_shift, master; |
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int i; |
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switch (dai->driver->id) { |
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case WM8776_DAI_DAC: |
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iface_reg = WM8776_DACIFCTRL; |
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master = 0x80; |
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ratio_shift = 4; |
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break; |
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case WM8776_DAI_ADC: |
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iface_reg = WM8776_ADCIFCTRL; |
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master = 0x100; |
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ratio_shift = 0; |
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break; |
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default: |
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return -EINVAL; |
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} |
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/* Set word length */ |
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switch (params_width(params)) { |
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case 16: |
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iface = 0; |
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break; |
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case 20: |
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iface = 0x10; |
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break; |
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case 24: |
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iface = 0x20; |
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break; |
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case 32: |
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iface = 0x30; |
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break; |
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default: |
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dev_err(component->dev, "Unsupported sample size: %i\n", |
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params_width(params)); |
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return -EINVAL; |
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} |
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/* Only need to set MCLK/LRCLK ratio if we're master */ |
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if (snd_soc_component_read(component, WM8776_MSTRCTRL) & master) { |
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for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) { |
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if (wm8776->sysclk[dai->driver->id] / params_rate(params) |
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== mclk_ratios[i]) |
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break; |
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} |
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if (i == ARRAY_SIZE(mclk_ratios)) { |
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dev_err(component->dev, |
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"Unable to configure MCLK ratio %d/%d\n", |
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wm8776->sysclk[dai->driver->id], params_rate(params)); |
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return -EINVAL; |
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} |
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dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]); |
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snd_soc_component_update_bits(component, WM8776_MSTRCTRL, |
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0x7 << ratio_shift, i << ratio_shift); |
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} else { |
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dev_dbg(component->dev, "DAI in slave mode\n"); |
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} |
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snd_soc_component_update_bits(component, iface_reg, 0x30, iface); |
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return 0; |
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} |
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static int wm8776_mute(struct snd_soc_dai *dai, int mute, int direction) |
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{ |
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struct snd_soc_component *component = dai->component; |
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return snd_soc_component_write(component, WM8776_DACMUTE, !!mute); |
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} |
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static int wm8776_set_sysclk(struct snd_soc_dai *dai, |
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int clk_id, unsigned int freq, int dir) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component); |
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if (WARN_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk))) |
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return -EINVAL; |
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wm8776->sysclk[dai->driver->id] = freq; |
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return 0; |
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} |
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static int wm8776_set_bias_level(struct snd_soc_component *component, |
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enum snd_soc_bias_level level) |
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{ |
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struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component); |
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switch (level) { |
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case SND_SOC_BIAS_ON: |
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break; |
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case SND_SOC_BIAS_PREPARE: |
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break; |
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case SND_SOC_BIAS_STANDBY: |
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if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { |
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regcache_sync(wm8776->regmap); |
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/* Disable the global powerdown; DAPM does the rest */ |
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snd_soc_component_update_bits(component, WM8776_PWRDOWN, 1, 0); |
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} |
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break; |
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case SND_SOC_BIAS_OFF: |
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snd_soc_component_update_bits(component, WM8776_PWRDOWN, 1, 1); |
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break; |
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} |
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return 0; |
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} |
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#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
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static const struct snd_soc_dai_ops wm8776_dac_ops = { |
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.mute_stream = wm8776_mute, |
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.hw_params = wm8776_hw_params, |
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.set_fmt = wm8776_set_fmt, |
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.set_sysclk = wm8776_set_sysclk, |
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.no_capture_mute = 1, |
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}; |
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static const struct snd_soc_dai_ops wm8776_adc_ops = { |
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.hw_params = wm8776_hw_params, |
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.set_fmt = wm8776_set_fmt, |
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.set_sysclk = wm8776_set_sysclk, |
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}; |
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static struct snd_soc_dai_driver wm8776_dai[] = { |
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{ |
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.name = "wm8776-hifi-playback", |
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.id = WM8776_DAI_DAC, |
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.playback = { |
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.stream_name = "Playback", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.rate_min = 32000, |
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.rate_max = 192000, |
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.formats = WM8776_FORMATS, |
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}, |
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.ops = &wm8776_dac_ops, |
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}, |
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{ |
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.name = "wm8776-hifi-capture", |
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.id = WM8776_DAI_ADC, |
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.capture = { |
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.stream_name = "Capture", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.rate_min = 32000, |
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.rate_max = 96000, |
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.formats = WM8776_FORMATS, |
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}, |
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.ops = &wm8776_adc_ops, |
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}, |
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}; |
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static int wm8776_probe(struct snd_soc_component *component) |
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{ |
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int ret = 0; |
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ret = wm8776_reset(component); |
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if (ret < 0) { |
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dev_err(component->dev, "Failed to issue reset: %d\n", ret); |
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return ret; |
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} |
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/* Latch the update bits; right channel only since we always |
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* update both. */ |
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snd_soc_component_update_bits(component, WM8776_HPRVOL, 0x100, 0x100); |
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snd_soc_component_update_bits(component, WM8776_DACRVOL, 0x100, 0x100); |
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return ret; |
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} |
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static const struct snd_soc_component_driver soc_component_dev_wm8776 = { |
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.probe = wm8776_probe, |
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.set_bias_level = wm8776_set_bias_level, |
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.controls = wm8776_snd_controls, |
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.num_controls = ARRAY_SIZE(wm8776_snd_controls), |
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.dapm_widgets = wm8776_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets), |
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.dapm_routes = routes, |
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.num_dapm_routes = ARRAY_SIZE(routes), |
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.suspend_bias_off = 1, |
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.idle_bias_on = 1, |
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.use_pmdown_time = 1, |
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.endianness = 1, |
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.non_legacy_dai_naming = 1, |
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}; |
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static const struct of_device_id wm8776_of_match[] = { |
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{ .compatible = "wlf,wm8776", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, wm8776_of_match); |
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static const struct regmap_config wm8776_regmap = { |
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.reg_bits = 7, |
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.val_bits = 9, |
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.max_register = WM8776_RESET, |
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.reg_defaults = wm8776_reg_defaults, |
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.num_reg_defaults = ARRAY_SIZE(wm8776_reg_defaults), |
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.cache_type = REGCACHE_RBTREE, |
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.volatile_reg = wm8776_volatile, |
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}; |
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#if defined(CONFIG_SPI_MASTER) |
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static int wm8776_spi_probe(struct spi_device *spi) |
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{ |
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struct wm8776_priv *wm8776; |
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int ret; |
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wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv), |
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GFP_KERNEL); |
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if (wm8776 == NULL) |
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return -ENOMEM; |
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wm8776->regmap = devm_regmap_init_spi(spi, &wm8776_regmap); |
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if (IS_ERR(wm8776->regmap)) |
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return PTR_ERR(wm8776->regmap); |
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spi_set_drvdata(spi, wm8776); |
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ret = devm_snd_soc_register_component(&spi->dev, |
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&soc_component_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); |
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|
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return ret; |
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} |
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static struct spi_driver wm8776_spi_driver = { |
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.driver = { |
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.name = "wm8776", |
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.of_match_table = wm8776_of_match, |
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}, |
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.probe = wm8776_spi_probe, |
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}; |
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#endif /* CONFIG_SPI_MASTER */ |
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|
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#if IS_ENABLED(CONFIG_I2C) |
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static int wm8776_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct wm8776_priv *wm8776; |
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int ret; |
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wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv), |
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GFP_KERNEL); |
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if (wm8776 == NULL) |
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return -ENOMEM; |
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wm8776->regmap = devm_regmap_init_i2c(i2c, &wm8776_regmap); |
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if (IS_ERR(wm8776->regmap)) |
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return PTR_ERR(wm8776->regmap); |
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i2c_set_clientdata(i2c, wm8776); |
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ret = devm_snd_soc_register_component(&i2c->dev, |
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&soc_component_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); |
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return ret; |
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} |
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static const struct i2c_device_id wm8776_i2c_id[] = { |
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{ "wm8775", WM8775 }, |
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{ "wm8776", WM8776 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id); |
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|
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static struct i2c_driver wm8776_i2c_driver = { |
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.driver = { |
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.name = "wm8776", |
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.of_match_table = wm8776_of_match, |
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}, |
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.probe = wm8776_i2c_probe, |
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.id_table = wm8776_i2c_id, |
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}; |
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#endif |
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|
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static int __init wm8776_modinit(void) |
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{ |
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int ret = 0; |
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#if IS_ENABLED(CONFIG_I2C) |
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ret = i2c_add_driver(&wm8776_i2c_driver); |
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if (ret != 0) { |
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printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n", |
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ret); |
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} |
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#endif |
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#if defined(CONFIG_SPI_MASTER) |
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ret = spi_register_driver(&wm8776_spi_driver); |
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if (ret != 0) { |
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printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n", |
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ret); |
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} |
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#endif |
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return ret; |
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} |
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module_init(wm8776_modinit); |
|
|
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static void __exit wm8776_exit(void) |
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{ |
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#if IS_ENABLED(CONFIG_I2C) |
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i2c_del_driver(&wm8776_i2c_driver); |
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#endif |
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#if defined(CONFIG_SPI_MASTER) |
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spi_unregister_driver(&wm8776_spi_driver); |
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#endif |
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} |
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module_exit(wm8776_exit); |
|
|
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MODULE_DESCRIPTION("ASoC WM8776 driver"); |
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MODULE_AUTHOR("Mark Brown <[email protected]>"); |
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MODULE_LICENSE("GPL");
|
|
|