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701 lines
19 KiB
701 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* wm8770.c -- WM8770 ALSA SoC Audio driver |
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* |
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* Copyright 2010 Wolfson Microelectronics plc |
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* |
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* Author: Dimitris Papastamos <[email protected]> |
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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/of_device.h> |
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#include <linux/pm.h> |
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#include <linux/spi/spi.h> |
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#include <linux/regmap.h> |
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#include <linux/regulator/consumer.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 "wm8770.h" |
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#define WM8770_NUM_SUPPLIES 3 |
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static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = { |
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"AVDD1", |
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"AVDD2", |
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"DVDD" |
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}; |
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static const struct reg_default wm8770_reg_defaults[] = { |
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{ 0, 0x7f }, |
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{ 1, 0x7f }, |
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{ 2, 0x7f }, |
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{ 3, 0x7f }, |
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{ 4, 0x7f }, |
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{ 5, 0x7f }, |
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{ 6, 0x7f }, |
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{ 7, 0x7f }, |
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{ 8, 0x7f }, |
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{ 9, 0xff }, |
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{ 10, 0xff }, |
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{ 11, 0xff }, |
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{ 12, 0xff }, |
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{ 13, 0xff }, |
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{ 14, 0xff }, |
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{ 15, 0xff }, |
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{ 16, 0xff }, |
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{ 17, 0xff }, |
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{ 18, 0 }, |
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{ 19, 0x90 }, |
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{ 20, 0 }, |
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{ 21, 0 }, |
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{ 22, 0x22 }, |
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{ 23, 0x22 }, |
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{ 24, 0x3e }, |
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{ 25, 0xc }, |
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{ 26, 0xc }, |
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{ 27, 0x100 }, |
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{ 28, 0x189 }, |
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{ 29, 0x189 }, |
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{ 30, 0x8770 }, |
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}; |
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static bool wm8770_volatile_reg(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case WM8770_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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struct wm8770_priv { |
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struct regmap *regmap; |
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struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES]; |
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struct notifier_block disable_nb[WM8770_NUM_SUPPLIES]; |
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struct snd_soc_component *component; |
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int sysclk; |
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}; |
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static int vout12supply_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event); |
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static int vout34supply_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event); |
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/* |
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* We can't use the same notifier block for more than one supply and |
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* there's no way I can see to get from a callback to the caller |
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* except container_of(). |
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*/ |
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#define WM8770_REGULATOR_EVENT(n) \ |
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static int wm8770_regulator_event_##n(struct notifier_block *nb, \ |
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unsigned long event, void *data) \ |
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{ \ |
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struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \ |
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disable_nb[n]); \ |
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if (event & REGULATOR_EVENT_DISABLE) { \ |
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regcache_mark_dirty(wm8770->regmap); \ |
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} \ |
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return 0; \ |
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} |
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WM8770_REGULATOR_EVENT(0) |
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WM8770_REGULATOR_EVENT(1) |
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WM8770_REGULATOR_EVENT(2) |
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0); |
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static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1); |
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static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1); |
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static const char *dac_phase_text[][2] = { |
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{ "DAC1 Normal", "DAC1 Inverted" }, |
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{ "DAC2 Normal", "DAC2 Inverted" }, |
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{ "DAC3 Normal", "DAC3 Inverted" }, |
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{ "DAC4 Normal", "DAC4 Inverted" }, |
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}; |
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static const struct soc_enum dac_phase[] = { |
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]), |
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]), |
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]), |
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]), |
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}; |
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static const struct snd_kcontrol_new wm8770_snd_controls[] = { |
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/* global DAC playback controls */ |
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SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0, |
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dac_dig_tlv), |
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SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1), |
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SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0), |
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/* global VOUT playback controls */ |
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SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0, |
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dac_alg_tlv), |
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SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0), |
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/* VOUT1/2/3/4 specific controls */ |
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SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL, |
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WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv), |
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SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL, |
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WM8770_VOUT1RVOL, 7, 1, 0), |
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SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL, |
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WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv), |
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SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL, |
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WM8770_VOUT2RVOL, 7, 1, 0), |
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SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL, |
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WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv), |
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SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL, |
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WM8770_VOUT3RVOL, 7, 1, 0), |
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SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL, |
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WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv), |
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SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL, |
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WM8770_VOUT4RVOL, 7, 1, 0), |
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/* DAC1/2/3/4 specific controls */ |
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SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL, |
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WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv), |
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SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0), |
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SOC_ENUM("DAC1 Phase", dac_phase[0]), |
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SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL, |
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WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv), |
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SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0), |
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SOC_ENUM("DAC2 Phase", dac_phase[1]), |
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SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL, |
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WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv), |
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SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0), |
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SOC_ENUM("DAC3 Phase", dac_phase[2]), |
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SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL, |
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WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv), |
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SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0), |
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SOC_ENUM("DAC4 Phase", dac_phase[3]), |
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/* ADC specific controls */ |
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SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL, |
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0, 31, 0, adc_tlv), |
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SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL, |
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5, 1, 1), |
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/* other controls */ |
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SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0), |
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SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1) |
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}; |
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static const char *ain_text[] = { |
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"AIN1", "AIN2", "AIN3", "AIN4", |
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"AIN5", "AIN6", "AIN7", "AIN8" |
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}; |
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static SOC_ENUM_DOUBLE_DECL(ain_enum, |
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WM8770_ADCMUX, 0, 4, ain_text); |
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static const struct snd_kcontrol_new ain_mux = |
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SOC_DAPM_ENUM("Capture Mux", ain_enum); |
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static const struct snd_kcontrol_new vout1_mix_controls[] = { |
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SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0), |
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SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0), |
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0) |
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}; |
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static const struct snd_kcontrol_new vout2_mix_controls[] = { |
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SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0), |
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SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0), |
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0) |
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}; |
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static const struct snd_kcontrol_new vout3_mix_controls[] = { |
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SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0), |
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SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0), |
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0) |
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}; |
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static const struct snd_kcontrol_new vout4_mix_controls[] = { |
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SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0), |
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0) |
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}; |
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static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = { |
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SND_SOC_DAPM_INPUT("AUX1"), |
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SND_SOC_DAPM_INPUT("AUX2"), |
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SND_SOC_DAPM_INPUT("AUX3"), |
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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_INPUT("AIN6"), |
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SND_SOC_DAPM_INPUT("AIN7"), |
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SND_SOC_DAPM_INPUT("AIN8"), |
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SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux), |
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SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1), |
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SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1), |
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SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1), |
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SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1), |
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SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1), |
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SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0, |
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vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), |
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SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0, |
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vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), |
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SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0, |
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vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)), |
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SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0, |
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vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)), |
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SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0, |
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vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)), |
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SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0, |
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vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)), |
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SND_SOC_DAPM_OUTPUT("VOUT1"), |
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SND_SOC_DAPM_OUTPUT("VOUT2"), |
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SND_SOC_DAPM_OUTPUT("VOUT3"), |
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SND_SOC_DAPM_OUTPUT("VOUT4") |
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}; |
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static const struct snd_soc_dapm_route wm8770_intercon[] = { |
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{ "Capture Mux", "AIN1", "AIN1" }, |
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{ "Capture Mux", "AIN2", "AIN2" }, |
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{ "Capture Mux", "AIN3", "AIN3" }, |
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{ "Capture Mux", "AIN4", "AIN4" }, |
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{ "Capture Mux", "AIN5", "AIN5" }, |
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{ "Capture Mux", "AIN6", "AIN6" }, |
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{ "Capture Mux", "AIN7", "AIN7" }, |
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{ "Capture Mux", "AIN8", "AIN8" }, |
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{ "ADC", NULL, "Capture Mux" }, |
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{ "VOUT1 Mixer", NULL, "VOUT12 Supply" }, |
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{ "VOUT1 Mixer", "DAC1 Switch", "DAC1" }, |
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{ "VOUT1 Mixer", "AUX1 Switch", "AUX1" }, |
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{ "VOUT1 Mixer", "Bypass Switch", "Capture Mux" }, |
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{ "VOUT2 Mixer", NULL, "VOUT12 Supply" }, |
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{ "VOUT2 Mixer", "DAC2 Switch", "DAC2" }, |
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{ "VOUT2 Mixer", "AUX2 Switch", "AUX2" }, |
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{ "VOUT2 Mixer", "Bypass Switch", "Capture Mux" }, |
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{ "VOUT3 Mixer", NULL, "VOUT34 Supply" }, |
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{ "VOUT3 Mixer", "DAC3 Switch", "DAC3" }, |
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{ "VOUT3 Mixer", "AUX3 Switch", "AUX3" }, |
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{ "VOUT3 Mixer", "Bypass Switch", "Capture Mux" }, |
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{ "VOUT4 Mixer", NULL, "VOUT34 Supply" }, |
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{ "VOUT4 Mixer", "DAC4 Switch", "DAC4" }, |
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{ "VOUT4 Mixer", "Bypass Switch", "Capture Mux" }, |
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{ "VOUT1", NULL, "VOUT1 Mixer" }, |
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{ "VOUT2", NULL, "VOUT2 Mixer" }, |
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{ "VOUT3", NULL, "VOUT3 Mixer" }, |
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{ "VOUT4", NULL, "VOUT4 Mixer" } |
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}; |
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static int vout12supply_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); |
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switch (event) { |
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case SND_SOC_DAPM_PRE_PMU: |
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snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0); |
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break; |
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case SND_SOC_DAPM_POST_PMD: |
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snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0x180); |
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break; |
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} |
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return 0; |
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} |
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static int vout34supply_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); |
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switch (event) { |
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case SND_SOC_DAPM_PRE_PMU: |
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snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0); |
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break; |
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case SND_SOC_DAPM_POST_PMD: |
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snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0x180); |
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break; |
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} |
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return 0; |
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} |
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static int wm8770_reset(struct snd_soc_component *component) |
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{ |
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return snd_soc_component_write(component, WM8770_RESET, 0); |
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} |
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static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
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{ |
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struct snd_soc_component *component; |
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int iface, master; |
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component = dai->component; |
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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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master = 0x100; |
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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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iface = 0; |
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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 |= 0x2; |
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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 |= 0x1; |
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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 |= 0xc; |
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break; |
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case SND_SOC_DAIFMT_IB_NF: |
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iface |= 0x8; |
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break; |
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case SND_SOC_DAIFMT_NB_IF: |
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iface |= 0x4; |
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break; |
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default: |
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return -EINVAL; |
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} |
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snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0xf, iface); |
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snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x100, master); |
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return 0; |
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} |
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static const 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 wm8770_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; |
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struct wm8770_priv *wm8770; |
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int i; |
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int iface; |
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int shift; |
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int ratio; |
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component = dai->component; |
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wm8770 = snd_soc_component_get_drvdata(component); |
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iface = 0; |
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switch (params_width(params)) { |
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case 16: |
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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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} |
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switch (substream->stream) { |
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case SNDRV_PCM_STREAM_PLAYBACK: |
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i = 0; |
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shift = 4; |
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break; |
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case SNDRV_PCM_STREAM_CAPTURE: |
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i = 2; |
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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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/* Only need to set MCLK/LRCLK ratio if we're master */ |
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if (snd_soc_component_read(component, WM8770_MSTRCTRL) & 0x100) { |
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for (; i < ARRAY_SIZE(mclk_ratios); ++i) { |
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ratio = wm8770->sysclk / params_rate(params); |
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if (ratio == 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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wm8770->sysclk, 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, WM8770_MSTRCTRL, 0x7 << shift, |
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i << shift); |
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} |
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snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0x30, iface); |
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return 0; |
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} |
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static int wm8770_mute(struct snd_soc_dai *dai, int mute, int direction) |
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{ |
|
struct snd_soc_component *component; |
|
|
|
component = dai->component; |
|
return snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, |
|
!!mute << 4); |
|
} |
|
|
|
static int wm8770_set_sysclk(struct snd_soc_dai *dai, |
|
int clk_id, unsigned int freq, int dir) |
|
{ |
|
struct snd_soc_component *component; |
|
struct wm8770_priv *wm8770; |
|
|
|
component = dai->component; |
|
wm8770 = snd_soc_component_get_drvdata(component); |
|
wm8770->sysclk = freq; |
|
return 0; |
|
} |
|
|
|
static int wm8770_set_bias_level(struct snd_soc_component *component, |
|
enum snd_soc_bias_level level) |
|
{ |
|
int ret; |
|
struct wm8770_priv *wm8770; |
|
|
|
wm8770 = 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) { |
|
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), |
|
wm8770->supplies); |
|
if (ret) { |
|
dev_err(component->dev, |
|
"Failed to enable supplies: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
regcache_sync(wm8770->regmap); |
|
|
|
/* global powerup */ |
|
snd_soc_component_write(component, WM8770_PWDNCTRL, 0); |
|
} |
|
break; |
|
case SND_SOC_BIAS_OFF: |
|
/* global powerdown */ |
|
snd_soc_component_write(component, WM8770_PWDNCTRL, 1); |
|
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), |
|
wm8770->supplies); |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#define WM8770_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 wm8770_dai_ops = { |
|
.mute_stream = wm8770_mute, |
|
.hw_params = wm8770_hw_params, |
|
.set_fmt = wm8770_set_fmt, |
|
.set_sysclk = wm8770_set_sysclk, |
|
.no_capture_mute = 1, |
|
}; |
|
|
|
static struct snd_soc_dai_driver wm8770_dai = { |
|
.name = "wm8770-hifi", |
|
.playback = { |
|
.stream_name = "Playback", |
|
.channels_min = 2, |
|
.channels_max = 2, |
|
.rates = SNDRV_PCM_RATE_8000_192000, |
|
.formats = WM8770_FORMATS |
|
}, |
|
.capture = { |
|
.stream_name = "Capture", |
|
.channels_min = 2, |
|
.channels_max = 2, |
|
.rates = SNDRV_PCM_RATE_8000_96000, |
|
.formats = WM8770_FORMATS |
|
}, |
|
.ops = &wm8770_dai_ops, |
|
.symmetric_rate = 1 |
|
}; |
|
|
|
static int wm8770_probe(struct snd_soc_component *component) |
|
{ |
|
struct wm8770_priv *wm8770; |
|
int ret; |
|
|
|
wm8770 = snd_soc_component_get_drvdata(component); |
|
wm8770->component = component; |
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), |
|
wm8770->supplies); |
|
if (ret) { |
|
dev_err(component->dev, "Failed to enable supplies: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = wm8770_reset(component); |
|
if (ret < 0) { |
|
dev_err(component->dev, "Failed to issue reset: %d\n", ret); |
|
goto err_reg_enable; |
|
} |
|
|
|
/* latch the volume update bits */ |
|
snd_soc_component_update_bits(component, WM8770_MSDIGVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_MSALGVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_VOUT1RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_VOUT2RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_VOUT3RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_VOUT4RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_DAC1RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_DAC2RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_DAC3RVOL, 0x100, 0x100); |
|
snd_soc_component_update_bits(component, WM8770_DAC4RVOL, 0x100, 0x100); |
|
|
|
/* mute all DACs */ |
|
snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 0x10); |
|
|
|
err_reg_enable: |
|
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies); |
|
return ret; |
|
} |
|
|
|
static const struct snd_soc_component_driver soc_component_dev_wm8770 = { |
|
.probe = wm8770_probe, |
|
.set_bias_level = wm8770_set_bias_level, |
|
.controls = wm8770_snd_controls, |
|
.num_controls = ARRAY_SIZE(wm8770_snd_controls), |
|
.dapm_widgets = wm8770_dapm_widgets, |
|
.num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets), |
|
.dapm_routes = wm8770_intercon, |
|
.num_dapm_routes = ARRAY_SIZE(wm8770_intercon), |
|
.use_pmdown_time = 1, |
|
.endianness = 1, |
|
.non_legacy_dai_naming = 1, |
|
}; |
|
|
|
static const struct of_device_id wm8770_of_match[] = { |
|
{ .compatible = "wlf,wm8770", }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, wm8770_of_match); |
|
|
|
static const struct regmap_config wm8770_regmap = { |
|
.reg_bits = 7, |
|
.val_bits = 9, |
|
.max_register = WM8770_RESET, |
|
|
|
.reg_defaults = wm8770_reg_defaults, |
|
.num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults), |
|
.cache_type = REGCACHE_RBTREE, |
|
|
|
.volatile_reg = wm8770_volatile_reg, |
|
}; |
|
|
|
static int wm8770_spi_probe(struct spi_device *spi) |
|
{ |
|
struct wm8770_priv *wm8770; |
|
int ret, i; |
|
|
|
wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv), |
|
GFP_KERNEL); |
|
if (!wm8770) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) |
|
wm8770->supplies[i].supply = wm8770_supply_names[i]; |
|
|
|
ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies), |
|
wm8770->supplies); |
|
if (ret) { |
|
dev_err(&spi->dev, "Failed to request supplies: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0; |
|
wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1; |
|
wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2; |
|
|
|
/* This should really be moved into the regulator core */ |
|
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) { |
|
ret = devm_regulator_register_notifier( |
|
wm8770->supplies[i].consumer, |
|
&wm8770->disable_nb[i]); |
|
if (ret) { |
|
dev_err(&spi->dev, |
|
"Failed to register regulator notifier: %d\n", |
|
ret); |
|
} |
|
} |
|
|
|
wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap); |
|
if (IS_ERR(wm8770->regmap)) |
|
return PTR_ERR(wm8770->regmap); |
|
|
|
spi_set_drvdata(spi, wm8770); |
|
|
|
ret = devm_snd_soc_register_component(&spi->dev, |
|
&soc_component_dev_wm8770, &wm8770_dai, 1); |
|
|
|
return ret; |
|
} |
|
|
|
static struct spi_driver wm8770_spi_driver = { |
|
.driver = { |
|
.name = "wm8770", |
|
.of_match_table = wm8770_of_match, |
|
}, |
|
.probe = wm8770_spi_probe, |
|
}; |
|
|
|
module_spi_driver(wm8770_spi_driver); |
|
|
|
MODULE_DESCRIPTION("ASoC WM8770 driver"); |
|
MODULE_AUTHOR("Dimitris Papastamos <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|