846 lines
23 KiB
C
846 lines
23 KiB
C
/*
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* wm8974.c -- WM8974 ALSA Soc Audio driver
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*
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* Copyright 2006 Wolfson Microelectronics PLC.
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*
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* Author: Liam Girdwood <linux@wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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/version.h>
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#include <linux/kernel.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/platform_device.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/soc-dapm.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include "wm8974.h"
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static const u16 wm8974_reg[WM8974_CACHEREGNUM] = {
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0x0000, 0x0000, 0x0000, 0x0000,
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0x0050, 0x0000, 0x0140, 0x0000,
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0x0000, 0x0000, 0x0000, 0x00ff,
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0x0000, 0x0000, 0x0100, 0x00ff,
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0x0000, 0x0000, 0x012c, 0x002c,
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0x002c, 0x002c, 0x002c, 0x0000,
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0x0032, 0x0000, 0x0000, 0x0000,
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0x0000, 0x0000, 0x0000, 0x0000,
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0x0038, 0x000b, 0x0032, 0x0000,
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0x0008, 0x000c, 0x0093, 0x00e9,
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0x0000, 0x0000, 0x0000, 0x0000,
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0x0003, 0x0010, 0x0000, 0x0000,
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0x0000, 0x0002, 0x0000, 0x0000,
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0x0000, 0x0000, 0x0039, 0x0000,
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0x0000,
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};
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#define WM8974_POWER1_BIASEN 0x08
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#define WM8974_POWER1_BUFIOEN 0x10
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struct wm8974_priv {
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struct snd_soc_codec codec;
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u16 reg_cache[WM8974_CACHEREGNUM];
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};
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static struct snd_soc_codec *wm8974_codec;
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/*
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* read wm8974 register cache
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*/
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static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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if (reg == WM8974_RESET)
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return 0;
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if (reg >= WM8974_CACHEREGNUM)
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return -1;
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return cache[reg];
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}
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/*
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* write wm8974 register cache
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*/
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static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec,
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u16 reg, unsigned int value)
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{
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u16 *cache = codec->reg_cache;
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if (reg >= WM8974_CACHEREGNUM)
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return;
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cache[reg] = value;
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}
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/*
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* write to the WM8974 register space
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*/
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static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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u8 data[2];
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/* data is
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* D15..D9 WM8974 register offset
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* D8...D0 register data
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*/
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data[0] = (reg << 1) | ((value >> 8) & 0x0001);
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data[1] = value & 0x00ff;
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wm8974_write_reg_cache(codec, reg, value);
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if (codec->hw_write(codec->control_data, data, 2) == 2)
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return 0;
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else
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return -EIO;
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}
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#define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0)
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static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
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static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
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static const char *wm8974_eqmode[] = {"Capture", "Playback" };
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static const char *wm8974_bw[] = {"Narrow", "Wide" };
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static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
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static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
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static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
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static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
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static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
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static const char *wm8974_alc[] = {"ALC", "Limiter" };
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static const struct soc_enum wm8974_enum[] = {
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SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */
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SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */
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SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp),
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SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode),
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SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1),
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SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw),
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SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2),
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SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw),
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SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3),
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SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw),
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SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4),
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SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw),
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SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5),
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SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc),
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};
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static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
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static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
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static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
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static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
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static const struct snd_kcontrol_new wm8974_snd_controls[] = {
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SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
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SOC_ENUM("DAC Companding", wm8974_enum[1]),
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SOC_ENUM("ADC Companding", wm8974_enum[0]),
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SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
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SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
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SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
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SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
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SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
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SOC_SINGLE("ADC Inversion Switch", WM8974_COMP, 0, 1, 0),
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SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv),
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SOC_ENUM("Equaliser Function", wm8974_enum[3]),
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SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
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SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv),
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SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]),
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SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
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SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv),
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SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]),
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SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
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SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv),
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SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]),
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SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
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SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv),
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SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]),
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SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
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SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv),
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SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0),
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SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0),
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SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0),
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SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0),
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SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0),
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SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0),
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SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0),
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SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0),
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SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0),
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SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0),
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SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0),
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SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
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SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0),
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SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0),
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SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0),
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SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0),
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SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0),
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SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv),
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SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0),
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SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1),
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SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 1, spk_tlv),
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SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0),
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SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 0),
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};
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/* Speaker Output Mixer */
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static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
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SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
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SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
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SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1),
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};
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/* Mono Output Mixer */
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static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
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SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
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SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
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SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 1),
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};
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/* AUX Input boost vol */
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static const struct snd_kcontrol_new wm8974_aux_boost_controls =
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SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0);
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/* Mic Input boost vol */
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static const struct snd_kcontrol_new wm8974_mic_boost_controls =
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SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0);
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/* Capture boost switch */
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static const struct snd_kcontrol_new wm8974_capture_boost_controls =
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SOC_DAPM_SINGLE("Capture Boost Switch", WM8974_INPPGA, 6, 1, 0);
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/* Aux In to PGA */
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static const struct snd_kcontrol_new wm8974_aux_capture_boost_controls =
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SOC_DAPM_SINGLE("Aux Capture Boost Switch", WM8974_INPPGA, 2, 1, 0);
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/* Mic P In to PGA */
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static const struct snd_kcontrol_new wm8974_micp_capture_boost_controls =
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SOC_DAPM_SINGLE("Mic P Capture Boost Switch", WM8974_INPPGA, 0, 1, 0);
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/* Mic N In to PGA */
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static const struct snd_kcontrol_new wm8974_micn_capture_boost_controls =
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SOC_DAPM_SINGLE("Mic N Capture Boost Switch", WM8974_INPPGA, 1, 1, 0);
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static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
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SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
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&wm8974_speaker_mixer_controls[0],
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ARRAY_SIZE(wm8974_speaker_mixer_controls)),
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SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
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&wm8974_mono_mixer_controls[0],
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ARRAY_SIZE(wm8974_mono_mixer_controls)),
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
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SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER3, 0, 0),
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SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
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SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
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SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Mic PGA", WM8974_POWER2, 2, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Aux Boost", SND_SOC_NOPM, 0, 0,
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&wm8974_aux_boost_controls, 1),
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SND_SOC_DAPM_PGA("Mic Boost", SND_SOC_NOPM, 0, 0,
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&wm8974_mic_boost_controls, 1),
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SND_SOC_DAPM_SWITCH("Capture Boost", SND_SOC_NOPM, 0, 0,
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&wm8974_capture_boost_controls),
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SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, NULL, 0),
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SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0),
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SND_SOC_DAPM_INPUT("MICN"),
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SND_SOC_DAPM_INPUT("MICP"),
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SND_SOC_DAPM_INPUT("AUX"),
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SND_SOC_DAPM_OUTPUT("MONOOUT"),
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SND_SOC_DAPM_OUTPUT("SPKOUTP"),
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SND_SOC_DAPM_OUTPUT("SPKOUTN"),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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/* Mono output mixer */
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{"Mono Mixer", "PCM Playback Switch", "DAC"},
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{"Mono Mixer", "Aux Playback Switch", "Aux Input"},
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{"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
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/* Speaker output mixer */
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{"Speaker Mixer", "PCM Playback Switch", "DAC"},
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{"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
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{"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
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/* Outputs */
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{"Mono Out", NULL, "Mono Mixer"},
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{"MONOOUT", NULL, "Mono Out"},
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{"SpkN Out", NULL, "Speaker Mixer"},
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{"SpkP Out", NULL, "Speaker Mixer"},
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{"SPKOUTN", NULL, "SpkN Out"},
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{"SPKOUTP", NULL, "SpkP Out"},
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/* Boost Mixer */
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{"Boost Mixer", NULL, "ADC"},
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{"Capture Boost Switch", "Aux Capture Boost Switch", "AUX"},
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{"Aux Boost", "Aux Volume", "Boost Mixer"},
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{"Capture Boost", "Capture Switch", "Boost Mixer"},
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{"Mic Boost", "Mic Volume", "Boost Mixer"},
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/* Inputs */
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{"MICP", NULL, "Mic Boost"},
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{"MICN", NULL, "Mic PGA"},
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{"Mic PGA", NULL, "Capture Boost"},
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{"AUX", NULL, "Aux Input"},
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};
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static int wm8974_add_widgets(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets,
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ARRAY_SIZE(wm8974_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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snd_soc_dapm_new_widgets(codec);
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return 0;
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}
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struct pll_ {
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unsigned int pre_div:4; /* prescale - 1 */
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unsigned int n:4;
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unsigned int k;
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};
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static struct pll_ pll_div;
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/* The size in bits of the pll divide multiplied by 10
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* to allow rounding later */
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#define FIXED_PLL_SIZE ((1 << 24) * 10)
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static void pll_factors(unsigned int target, unsigned int source)
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{
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unsigned long long Kpart;
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unsigned int K, Ndiv, Nmod;
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Ndiv = target / source;
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if (Ndiv < 6) {
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source >>= 1;
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pll_div.pre_div = 1;
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Ndiv = target / source;
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} else
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pll_div.pre_div = 0;
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if ((Ndiv < 6) || (Ndiv > 12))
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printk(KERN_WARNING
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"WM8974 N value %u outwith recommended range!d\n",
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Ndiv);
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pll_div.n = Ndiv;
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Nmod = target % source;
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Kpart = FIXED_PLL_SIZE * (long long)Nmod;
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do_div(Kpart, source);
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K = Kpart & 0xFFFFFFFF;
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/* Check if we need to round */
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if ((K % 10) >= 5)
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K += 5;
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/* Move down to proper range now rounding is done */
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K /= 10;
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pll_div.k = K;
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}
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static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai,
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int pll_id, unsigned int freq_in, unsigned int freq_out)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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u16 reg;
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if (freq_in == 0 || freq_out == 0) {
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/* Clock CODEC directly from MCLK */
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reg = wm8974_read_reg_cache(codec, WM8974_CLOCK);
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wm8974_write(codec, WM8974_CLOCK, reg & 0x0ff);
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/* Turn off PLL */
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reg = wm8974_read_reg_cache(codec, WM8974_POWER1);
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wm8974_write(codec, WM8974_POWER1, reg & 0x1df);
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return 0;
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}
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pll_factors(freq_out*4, freq_in);
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wm8974_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
|
|
wm8974_write(codec, WM8974_PLLK1, pll_div.k >> 18);
|
|
wm8974_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
|
|
wm8974_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
|
|
reg = wm8974_read_reg_cache(codec, WM8974_POWER1);
|
|
wm8974_write(codec, WM8974_POWER1, reg | 0x020);
|
|
|
|
/* Run CODEC from PLL instead of MCLK */
|
|
reg = wm8974_read_reg_cache(codec, WM8974_CLOCK);
|
|
wm8974_write(codec, WM8974_CLOCK, reg | 0x100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Configure WM8974 clock dividers.
|
|
*/
|
|
static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
|
|
int div_id, int div)
|
|
{
|
|
struct snd_soc_codec *codec = codec_dai->codec;
|
|
u16 reg;
|
|
|
|
switch (div_id) {
|
|
case WM8974_OPCLKDIV:
|
|
reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf;
|
|
wm8974_write(codec, WM8974_GPIO, reg | div);
|
|
break;
|
|
case WM8974_MCLKDIV:
|
|
reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f;
|
|
wm8974_write(codec, WM8974_CLOCK, reg | div);
|
|
break;
|
|
case WM8974_ADCCLK:
|
|
reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7;
|
|
wm8974_write(codec, WM8974_ADC, reg | div);
|
|
break;
|
|
case WM8974_DACCLK:
|
|
reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7;
|
|
wm8974_write(codec, WM8974_DAC, reg | div);
|
|
break;
|
|
case WM8974_BCLKDIV:
|
|
reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3;
|
|
wm8974_write(codec, WM8974_CLOCK, reg | div);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
|
|
unsigned int fmt)
|
|
{
|
|
struct snd_soc_codec *codec = codec_dai->codec;
|
|
u16 iface = 0;
|
|
u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe;
|
|
|
|
/* set master/slave audio interface */
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
clk |= 0x0001;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* interface format */
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
iface |= 0x0010;
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
iface |= 0x0008;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
iface |= 0x00018;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* clock inversion */
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
iface |= 0x0180;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
iface |= 0x0100;
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
iface |= 0x0080;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
wm8974_write(codec, WM8974_IFACE, iface);
|
|
wm8974_write(codec, WM8974_CLOCK, clk);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f;
|
|
u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1;
|
|
|
|
/* bit size */
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S20_3LE:
|
|
iface |= 0x0020;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_LE:
|
|
iface |= 0x0040;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S32_LE:
|
|
iface |= 0x0060;
|
|
break;
|
|
}
|
|
|
|
/* filter coefficient */
|
|
switch (params_rate(params)) {
|
|
case SNDRV_PCM_RATE_8000:
|
|
adn |= 0x5 << 1;
|
|
break;
|
|
case SNDRV_PCM_RATE_11025:
|
|
adn |= 0x4 << 1;
|
|
break;
|
|
case SNDRV_PCM_RATE_16000:
|
|
adn |= 0x3 << 1;
|
|
break;
|
|
case SNDRV_PCM_RATE_22050:
|
|
adn |= 0x2 << 1;
|
|
break;
|
|
case SNDRV_PCM_RATE_32000:
|
|
adn |= 0x1 << 1;
|
|
break;
|
|
case SNDRV_PCM_RATE_44100:
|
|
break;
|
|
}
|
|
|
|
wm8974_write(codec, WM8974_IFACE, iface);
|
|
wm8974_write(codec, WM8974_ADD, adn);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8974_mute(struct snd_soc_dai *dai, int mute)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf;
|
|
|
|
if (mute)
|
|
wm8974_write(codec, WM8974_DAC, mute_reg | 0x40);
|
|
else
|
|
wm8974_write(codec, WM8974_DAC, mute_reg);
|
|
return 0;
|
|
}
|
|
|
|
/* liam need to make this lower power with dapm */
|
|
static int wm8974_set_bias_level(struct snd_soc_codec *codec,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
u16 power1 = wm8974_read_reg_cache(codec, WM8974_POWER1) & ~0x3;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
case SND_SOC_BIAS_PREPARE:
|
|
power1 |= 0x1; /* VMID 50k */
|
|
wm8974_write(codec, WM8974_POWER1, power1);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
|
|
|
|
if (codec->bias_level == SND_SOC_BIAS_OFF) {
|
|
/* Initial cap charge at VMID 5k */
|
|
wm8974_write(codec, WM8974_POWER1, power1 | 0x3);
|
|
mdelay(100);
|
|
}
|
|
|
|
power1 |= 0x2; /* VMID 500k */
|
|
wm8974_write(codec, WM8974_POWER1, power1);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
wm8974_write(codec, WM8974_POWER1, 0);
|
|
wm8974_write(codec, WM8974_POWER2, 0);
|
|
wm8974_write(codec, WM8974_POWER3, 0);
|
|
break;
|
|
}
|
|
|
|
codec->bias_level = level;
|
|
return 0;
|
|
}
|
|
|
|
#define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
|
|
|
|
#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
|
|
SNDRV_PCM_FMTBIT_S24_LE)
|
|
|
|
static struct snd_soc_dai_ops wm8974_ops = {
|
|
.hw_params = wm8974_pcm_hw_params,
|
|
.digital_mute = wm8974_mute,
|
|
.set_fmt = wm8974_set_dai_fmt,
|
|
.set_clkdiv = wm8974_set_dai_clkdiv,
|
|
.set_pll = wm8974_set_dai_pll,
|
|
};
|
|
|
|
struct snd_soc_dai wm8974_dai = {
|
|
.name = "WM8974 HiFi",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2, /* Only 1 channel of data */
|
|
.rates = WM8974_RATES,
|
|
.formats = WM8974_FORMATS,},
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2, /* Only 1 channel of data */
|
|
.rates = WM8974_RATES,
|
|
.formats = WM8974_FORMATS,},
|
|
.ops = &wm8974_ops,
|
|
};
|
|
EXPORT_SYMBOL_GPL(wm8974_dai);
|
|
|
|
static int wm8974_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8974_resume(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
int i;
|
|
u8 data[2];
|
|
u16 *cache = codec->reg_cache;
|
|
|
|
/* Sync reg_cache with the hardware */
|
|
for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) {
|
|
data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
|
|
data[1] = cache[i] & 0x00ff;
|
|
codec->hw_write(codec->control_data, data, 2);
|
|
}
|
|
wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
wm8974_set_bias_level(codec, codec->suspend_bias_level);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8974_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec;
|
|
int ret = 0;
|
|
|
|
if (wm8974_codec == NULL) {
|
|
dev_err(&pdev->dev, "Codec device not registered\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
socdev->card->codec = wm8974_codec;
|
|
codec = wm8974_codec;
|
|
|
|
/* register pcms */
|
|
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to create pcms: %d\n", ret);
|
|
goto pcm_err;
|
|
}
|
|
|
|
snd_soc_add_controls(codec, wm8974_snd_controls,
|
|
ARRAY_SIZE(wm8974_snd_controls));
|
|
wm8974_add_widgets(codec);
|
|
ret = snd_soc_init_card(socdev);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to register card: %d\n", ret);
|
|
goto card_err;
|
|
}
|
|
|
|
return ret;
|
|
|
|
card_err:
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
pcm_err:
|
|
return ret;
|
|
}
|
|
|
|
/* power down chip */
|
|
static int wm8974_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct snd_soc_codec_device soc_codec_dev_wm8974 = {
|
|
.probe = wm8974_probe,
|
|
.remove = wm8974_remove,
|
|
.suspend = wm8974_suspend,
|
|
.resume = wm8974_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974);
|
|
|
|
static __devinit int wm8974_register(struct wm8974_priv *wm8974)
|
|
{
|
|
int ret;
|
|
struct snd_soc_codec *codec = &wm8974->codec;
|
|
|
|
if (wm8974_codec) {
|
|
dev_err(codec->dev, "Another WM8974 is registered\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_init(&codec->mutex);
|
|
INIT_LIST_HEAD(&codec->dapm_widgets);
|
|
INIT_LIST_HEAD(&codec->dapm_paths);
|
|
|
|
codec->private_data = wm8974;
|
|
codec->name = "WM8974";
|
|
codec->owner = THIS_MODULE;
|
|
codec->read = wm8974_read_reg_cache;
|
|
codec->write = wm8974_write;
|
|
codec->bias_level = SND_SOC_BIAS_OFF;
|
|
codec->set_bias_level = wm8974_set_bias_level;
|
|
codec->dai = &wm8974_dai;
|
|
codec->num_dai = 1;
|
|
codec->reg_cache_size = WM8974_CACHEREGNUM;
|
|
codec->reg_cache = &wm8974->reg_cache;
|
|
|
|
memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg));
|
|
|
|
ret = wm8974_reset(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to issue reset\n");
|
|
return ret;
|
|
}
|
|
|
|
wm8974_dai.dev = codec->dev;
|
|
|
|
wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
wm8974_codec = codec;
|
|
|
|
ret = snd_soc_register_codec(codec);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_register_dai(&wm8974_dai);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
|
|
snd_soc_unregister_codec(codec);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __devexit void wm8974_unregister(struct wm8974_priv *wm8974)
|
|
{
|
|
wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF);
|
|
snd_soc_unregister_dai(&wm8974_dai);
|
|
snd_soc_unregister_codec(&wm8974->codec);
|
|
kfree(wm8974);
|
|
wm8974_codec = NULL;
|
|
}
|
|
|
|
static __devinit int wm8974_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct wm8974_priv *wm8974;
|
|
struct snd_soc_codec *codec;
|
|
|
|
wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL);
|
|
if (wm8974 == NULL)
|
|
return -ENOMEM;
|
|
|
|
codec = &wm8974->codec;
|
|
codec->hw_write = (hw_write_t)i2c_master_send;
|
|
|
|
i2c_set_clientdata(i2c, wm8974);
|
|
codec->control_data = i2c;
|
|
|
|
codec->dev = &i2c->dev;
|
|
|
|
return wm8974_register(wm8974);
|
|
}
|
|
|
|
static __devexit int wm8974_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct wm8974_priv *wm8974 = i2c_get_clientdata(client);
|
|
wm8974_unregister(wm8974);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id wm8974_i2c_id[] = {
|
|
{ "wm8974", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
|
|
|
|
static struct i2c_driver wm8974_i2c_driver = {
|
|
.driver = {
|
|
.name = "WM8974 I2C Codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = wm8974_i2c_probe,
|
|
.remove = __devexit_p(wm8974_i2c_remove),
|
|
.id_table = wm8974_i2c_id,
|
|
};
|
|
|
|
static int __init wm8974_modinit(void)
|
|
{
|
|
return i2c_add_driver(&wm8974_i2c_driver);
|
|
}
|
|
module_init(wm8974_modinit);
|
|
|
|
static void __exit wm8974_exit(void)
|
|
{
|
|
i2c_del_driver(&wm8974_i2c_driver);
|
|
}
|
|
module_exit(wm8974_exit);
|
|
|
|
MODULE_DESCRIPTION("ASoC WM8974 driver");
|
|
MODULE_AUTHOR("Liam Girdwood");
|
|
MODULE_LICENSE("GPL");
|