- 根目录:
- sound
- soc
- codecs
- wm8900.c
/*
* wm8900.c -- WM8900 ALSA Soc Audio driver
*
* Copyright 2007, 2008 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* TODO:
* - Tristating.
* - TDM.
* - Jack detect.
* - FLL source configuration, currently only MCLK is supported.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "wm8900.h"
/* WM8900 register space */
#define WM8900_REG_RESET 0x0
#define WM8900_REG_ID 0x0
#define WM8900_REG_POWER1 0x1
#define WM8900_REG_POWER2 0x2
#define WM8900_REG_POWER3 0x3
#define WM8900_REG_AUDIO1 0x4
#define WM8900_REG_AUDIO2 0x5
#define WM8900_REG_CLOCKING1 0x6
#define WM8900_REG_CLOCKING2 0x7
#define WM8900_REG_AUDIO3 0x8
#define WM8900_REG_AUDIO4 0x9
#define WM8900_REG_DACCTRL 0xa
#define WM8900_REG_LDAC_DV 0xb
#define WM8900_REG_RDAC_DV 0xc
#define WM8900_REG_SIDETONE 0xd
#define WM8900_REG_ADCCTRL 0xe
#define WM8900_REG_LADC_DV 0xf
#define WM8900_REG_RADC_DV 0x10
#define WM8900_REG_GPIO 0x12
#define WM8900_REG_INCTL 0x15
#define WM8900_REG_LINVOL 0x16
#define WM8900_REG_RINVOL 0x17
#define WM8900_REG_INBOOSTMIX1 0x18
#define WM8900_REG_INBOOSTMIX2 0x19
#define WM8900_REG_ADCPATH 0x1a
#define WM8900_REG_AUXBOOST 0x1b
#define WM8900_REG_ADDCTL 0x1e
#define WM8900_REG_FLLCTL1 0x24
#define WM8900_REG_FLLCTL2 0x25
#define WM8900_REG_FLLCTL3 0x26
#define WM8900_REG_FLLCTL4 0x27
#define WM8900_REG_FLLCTL5 0x28
#define WM8900_REG_FLLCTL6 0x29
#define WM8900_REG_LOUTMIXCTL1 0x2c
#define WM8900_REG_ROUTMIXCTL1 0x2d
#define WM8900_REG_BYPASS1 0x2e
#define WM8900_REG_BYPASS2 0x2f
#define WM8900_REG_AUXOUT_CTL 0x30
#define WM8900_REG_LOUT1CTL 0x33
#define WM8900_REG_ROUT1CTL 0x34
#define WM8900_REG_LOUT2CTL 0x35
#define WM8900_REG_ROUT2CTL 0x36
#define WM8900_REG_HPCTL1 0x3a
#define WM8900_REG_OUTBIASCTL 0x73
#define WM8900_MAXREG 0x80
#define WM8900_REG_ADDCTL_OUT1_DIS 0x80
#define WM8900_REG_ADDCTL_OUT2_DIS 0x40
#define WM8900_REG_ADDCTL_VMID_DIS 0x20
#define WM8900_REG_ADDCTL_BIAS_SRC 0x10
#define WM8900_REG_ADDCTL_VMID_SOFTST 0x04
#define WM8900_REG_ADDCTL_TEMP_SD 0x02
#define WM8900_REG_GPIO_TEMP_ENA 0x2
#define WM8900_REG_POWER1_STARTUP_BIAS_ENA 0x0100
#define WM8900_REG_POWER1_BIAS_ENA 0x0008
#define WM8900_REG_POWER1_VMID_BUF_ENA 0x0004
#define WM8900_REG_POWER1_FLL_ENA 0x0040
#define WM8900_REG_POWER2_SYSCLK_ENA 0x8000
#define WM8900_REG_POWER2_ADCL_ENA 0x0002
#define WM8900_REG_POWER2_ADCR_ENA 0x0001
#define WM8900_REG_POWER3_DACL_ENA 0x0002
#define WM8900_REG_POWER3_DACR_ENA 0x0001
#define WM8900_REG_AUDIO1_AIF_FMT_MASK 0x0018
#define WM8900_REG_AUDIO1_LRCLK_INV 0x0080
#define WM8900_REG_AUDIO1_BCLK_INV 0x0100
#define WM8900_REG_CLOCKING1_BCLK_DIR 0x1
#define WM8900_REG_CLOCKING1_MCLK_SRC 0x100
#define WM8900_REG_CLOCKING1_BCLK_MASK (~0x01e)
#define WM8900_REG_CLOCKING1_OPCLK_MASK (~0x7000)
#define WM8900_REG_CLOCKING2_ADC_CLKDIV 0xe0
#define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c
#define WM8900_REG_DACCTRL_MUTE 0x004
#define WM8900_REG_DACCTRL_DAC_SB_FILT 0x100
#define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400
#define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800
#define WM8900_REG_AUDIO4_DACLRC_DIR 0x0800
#define WM8900_REG_FLLCTL1_OSC_ENA 0x100
#define WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF 0x100
#define WM8900_REG_HPCTL1_HP_IPSTAGE_ENA 0x80
#define WM8900_REG_HPCTL1_HP_OPSTAGE_ENA 0x40
#define WM8900_REG_HPCTL1_HP_CLAMP_IP 0x20
#define WM8900_REG_HPCTL1_HP_CLAMP_OP 0x10
#define WM8900_REG_HPCTL1_HP_SHORT 0x08
#define WM8900_REG_HPCTL1_HP_SHORT2 0x04
#define WM8900_LRC_MASK 0xfc00
struct wm8900_priv {
enum snd_soc_control_type control_type;
u32 fll_in; /* FLL input frequency */
u32 fll_out; /* FLL output frequency */
};
/*
* wm8900 register cache. We can't read the entire register space and we
* have slow control buses so we cache the registers.
*/
static const u16 wm8900_reg_defaults[WM8900_MAXREG] = {
0x8900, 0x0000,
0xc000, 0x0000,
0x4050, 0x4000,
0x0008, 0x0000,
0x0040, 0x0040,
0x1004, 0x00c0,
0x00c0, 0x0000,
0x0100, 0x00c0,
0x00c0, 0x0000,
0xb001, 0x0000,
0x0000, 0x0044,
0x004c, 0x004c,
0x0044, 0x0044,
0x0000, 0x0044,
0x0000, 0x0000,
0x0002, 0x0000,
0x0000, 0x0000,
0x0000, 0x0000,
0x0008, 0x0000,
0x0000, 0x0008,
0x0097, 0x0100,
0x0000, 0x0000,
0x0050, 0x0050,
0x0055, 0x0055,
0x0055, 0x0000,
0x0000, 0x0079,
0x0079, 0x0079,
0x0079, 0x0000,
/* Remaining registers all zero */
};
static int wm8900_volatile_register(struct snd_soc_codec *codec, unsigned int reg)
{
switch (reg) {
case WM8900_REG_ID:
return 1;
default:
return 0;
}
}
static void wm8900_reset(struct snd_soc_codec *codec)
{
snd_soc_write(codec, WM8900_REG_RESET, 0);
memcpy(codec->reg_cache, wm8900_reg_defaults,
sizeof(wm8900_reg_defaults));
}
static int wm8900_hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
u16 hpctl1 = snd_soc_read(codec, WM8900_REG_HPCTL1);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* Clamp headphone outputs */
hpctl1 = WM8900_REG_HPCTL1_HP_CLAMP_IP |
WM8900_REG_HPCTL1_HP_CLAMP_OP;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
break;
case SND_SOC_DAPM_POST_PMU:
/* Enable the input stage */
hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_IP;
hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT |
WM8900_REG_HPCTL1_HP_SHORT2 |
WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
msleep(400);
/* Enable the output stage */
hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP;
hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
/* Remove the shorts */
hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
break;
case SND_SOC_DAPM_PRE_PMD:
/* Short the output */
hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
/* Disable the output stage */
hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
/* Clamp the outputs and power down input */
hpctl1 |= WM8900_REG_HPCTL1_HP_CLAMP_IP |
WM8900_REG_HPCTL1_HP_CLAMP_OP;
hpctl1 &= ~WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
break;
case SND_SOC_DAPM_POST_PMD:
/* Disable everything */
snd_soc_write(codec, WM8900_REG_HPCTL1, 0);
break;
default:
BUG();
}
return 0;
}
static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 100, 0);
static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(in_boost_tlv, -1200, 600, 0);
static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1200, 100, 0);
static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
static const DECLARE_TLV_DB_SCALE(adc_svol_tlv, -3600, 300, 0);
static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1);
static const char *mic_bias_level_txt[] = { "0.9*AVDD", "0.65*AVDD" };
static const struct soc_enum mic_bias_level =
SOC_ENUM_SINGLE(WM8900_REG_INCTL, 8, 2, mic_bias_level_txt);
static const char *dac_mute_rate_txt[] = { "Fast", "Slow" };
static const struct soc_enum dac_mute_rate =
SOC_ENUM_SINGLE(WM8900_REG_DACCTRL, 7, 2, dac_mute_rate_txt);
static const char *dac_deemphasis_txt[] = {
"Disabled", "32kHz", "44.1kHz", "48kHz"
};
static const struct soc_enum dac_deemphasis =
SOC_ENUM_SINGLE(WM8900_REG_DACCTRL, 4, 4, dac_deemphasis_txt);
static const char *adc_hpf_cut_txt[] = {
"Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3"
};
static const struct soc_enum adc_hpf_cut =
SOC_ENUM_SINGLE(WM8900_REG_ADCCTRL, 5, 4, adc_hpf_cut_txt);
static const char *lr_txt[] = {
"Left", "Right"
};
static const struct soc_enum aifl_src =
SOC_ENUM_SINGLE(WM8900_REG_AUDIO1, 15, 2, lr_txt);
static const struct soc_enum aifr_src =
SOC_ENUM_SINGLE(WM8900_REG_AUDIO1, 14, 2, lr_txt);
static const struct soc_enum dacl_src =
SOC_ENUM_SINGLE(WM8900_REG_AUDIO2, 15, 2, lr_txt);
static const struct soc_enum dacr_src =
SOC_ENUM_SINGLE(WM8900_REG_AUDIO2, 14, 2, lr_txt);
static const char *sidetone_txt[] = {
"Disabled", "Left ADC", "Right ADC"
};
static const struct soc_enum dacl_sidetone =
SOC_ENUM_SINGLE(WM8900_REG_SIDETONE, 2, 3, sidetone_txt);
static const struct soc_enum dacr_sidetone =
SOC_ENUM_SINGLE(WM8900_REG_SIDETONE, 0, 3, sidetone_txt);
static const struct snd_kcontrol_new wm8900_snd_controls[] = {
SOC_ENUM("Mic Bias Level", mic_bias_level),
SOC_SINGLE_TLV("Left Input PGA Volume", WM8900_REG_LINVOL, 0, 31, 0,
in_pga_tlv),
SOC_SINGLE("Left Input PGA Switch", WM8900_REG_LINVOL, 6, 1, 1),
SOC_SINGLE("Left Input PGA ZC Switch", WM8900_REG_LINVOL, 7, 1, 0),
SOC_SINGLE_TLV("Right Input PGA Volume", WM8900_REG_RINVOL, 0, 31, 0,
in_pga_tlv),
SOC_SINGLE("Right Input PGA Switch", WM8900_REG_RINVOL, 6, 1, 1),
SOC_SINGLE("Right Input PGA ZC Switch", WM8900_REG_RINVOL, 7, 1, 0),
SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1),
SOC_ENUM("DAC Mute Rate", dac_mute_rate),
SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0),
SOC_ENUM("DAC Deemphasis", dac_deemphasis),
SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL,
12, 1, 0),
SOC_SINGLE("ADC HPF Switch", WM8900_REG_ADCCTRL, 8, 1, 0),
SOC_ENUM("ADC HPF Cut-Off", adc_hpf_cut),
SOC_DOUBLE("ADC Invert Switch", WM8900_REG_ADCCTRL, 1, 0, 1, 0),
SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0,
adc_svol_tlv),
SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0,
adc_svol_tlv),
SOC_ENUM("Left Digital Audio Source", aifl_src),
SOC_ENUM("Right Digital Audio Source", aifr_src),
SOC_SINGLE_TLV("DAC Input Boost Volume", WM8900_REG_AUDIO2, 10, 4, 0,
dac_boost_tlv),
SOC_ENUM("Left DAC Source", dacl_src),
SOC_ENUM("Right DAC Source", dacr_src),
SOC_ENUM("Left DAC Sidetone", dacl_sidetone),
SOC_ENUM("Right DAC Sidetone", dacr_sidetone),
SOC_DOUBLE("DAC Invert Switch", WM8900_REG_DACCTRL, 1, 0, 1, 0),
SOC_DOUBLE_R_TLV("Digital Playback Volume",
WM8900_REG_LDAC_DV, WM8900_REG_RDAC_DV,
1, 96, 0, dac_tlv),
SOC_DOUBLE_R_TLV("Digital Capture Volume",
WM8900_REG_LADC_DV, WM8900_REG_RADC_DV, 1, 119, 0, adc_tlv),
SOC_SINGLE_TLV("LINPUT3 Bypass Volume", WM8900_REG_LOUTMIXCTL1, 4, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("RINPUT3 Bypass Volume", WM8900_REG_ROUTMIXCTL1, 4, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("Left AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 4, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("Right AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 0, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("LeftIn to RightOut Mixer Volume", WM8900_REG_BYPASS1, 0, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("LeftIn to LeftOut Mixer Volume", WM8900_REG_BYPASS1, 4, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("RightIn to LeftOut Mixer Volume", WM8900_REG_BYPASS2, 0, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("RightIn to RightOut Mixer Volume", WM8900_REG_BYPASS2, 4, 7, 0,
out_mix_tlv),
SOC_SINGLE_TLV("IN2L Boost Volume", WM8900_REG_INBOOSTMIX1, 0, 3, 0,
in_boost_tlv),
SOC_SINGLE_TLV("IN3L Boost Volume", WM8900_REG_INBOOSTMIX1, 4, 3, 0,
in_boost_tlv),
SOC_SINGLE_TLV("IN2R Boost Volume", WM8900_REG_INBOOSTMIX2, 0, 3, 0,
in_boost_tlv),
SOC_SINGLE_TLV("IN3R Boost Volume", WM8900_REG_INBOOSTMIX2, 4, 3, 0,
in_boost_tlv),
SOC_SINGLE_TLV("Left AUX Boost Volume", WM8900_REG_AUXBOOST, 4, 3, 0,
in_boost_tlv),
SOC_SINGLE_TLV("Right AUX Boost Volume", WM8900_REG_AUXBOOST, 0, 3, 0,
in_boost_tlv),
SOC_DOUBLE_R_TLV("LINEOUT1 Volume", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
0, 63, 0, out_pga_tlv),
SOC_DOUBLE_R("LINEOUT1 Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
6, 1, 1),
SOC_DOUBLE_R("LINEOUT1 ZC Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
7, 1, 0),
SOC_DOUBLE_R_TLV("LINEOUT2 Volume",
WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL,
0, 63, 0, out_pga_tlv),
SOC_DOUBLE_R("LINEOUT2 Switch",
WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 6, 1, 1),
SOC_DOUBLE_R("LINEOUT2 ZC Switch",
WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 7, 1, 0),
SOC_SINGLE("LINEOUT2 LP -12dB", WM8900_REG_LOUTMIXCTL1,
0, 1, 1),
};
static const struct snd_kcontrol_new wm8900_dapm_loutput2_control =
SOC_DAPM_SINGLE("LINEOUT2L Switch", WM8900_REG_POWER3, 6, 1, 0);
static const struct snd_kcontrol_new wm8900_dapm_routput2_control =
SOC_DAPM_SINGLE("LINEOUT2R Switch", WM8900_REG_POWER3, 5, 1, 0);
static const struct snd_kcontrol_new wm8900_loutmix_controls[] = {
SOC_DAPM_SINGLE("LINPUT3 Bypass Switch", WM8900_REG_LOUTMIXCTL1, 7, 1, 0),
SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 7, 1, 0),
SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 7, 1, 0),
SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 3, 1, 0),
SOC_DAPM_SINGLE("DACL Switch", WM8900_REG_LOUTMIXCTL1, 8, 1, 0),
};
static const struct snd_kcontrol_new wm8900_routmix_controls[] = {
SOC_DAPM_SINGLE("RINPUT3 Bypass Switch", WM8900_REG_ROUTMIXCTL1, 7, 1, 0),
SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 3, 1, 0),
SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 3, 1, 0),
SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 7, 1, 0),
SOC_DAPM_SINGLE("DACR Switch", WM8900_REG_ROUTMIXCTL1, 8, 1, 0),
};
static const struct snd_kcontrol_new wm8900_linmix_controls[] = {
SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INBOOSTMIX1, 2, 1, 1),
SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INBOOSTMIX1, 6, 1, 1),
SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 6, 1, 1),
SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 6, 1, 0),
};
static const struct snd_kcontrol_new wm8900_rinmix_controls[] = {
SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INBOOSTMIX2, 2, 1, 1),
SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INBOOSTMIX2, 6, 1, 1),
SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 2, 1, 1),
SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 2, 1, 0),
};
static const struct snd_kcontrol_new wm8900_linpga_controls[] = {
SOC_DAPM_SINGLE("LINPUT1 Switch", WM8900_REG_INCTL, 6, 1, 0),
SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INCTL, 5, 1, 0),
SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INCTL, 4, 1, 0),
};
static const struct snd_kcontrol_new wm8900_rinpga_controls[] = {
SOC_DAPM_SINGLE("RINPUT1 Switch", WM8900_REG_INCTL, 2, 1, 0),
SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0),
SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0),
};
static const char *wm9700_lp_mux[] = { "Disabled", "Enabled" };
static const struct soc_enum wm8900_lineout2_lp_mux =
SOC_ENUM_SINGLE(WM8900_REG_LOUTMIXCTL1, 1, 2, wm9700_lp_mux);
static const struct snd_kcontrol_new wm8900_lineout2_lp =
SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux);
static const struct snd_soc_dapm_widget wm8900_dapm_widgets[] = {
/* Externally visible pins */
SND_SOC_DAPM_OUTPUT("LINEOUT1L"),
SND_SOC_DAPM_OUTPUT("LINEOUT1R"),
SND_SOC_DAPM_OUTPUT("LINEOUT2L"),
SND_SOC_DAPM_OUTPUT("LINEOUT2R"),
SND_SOC_DAPM_OUTPUT("HP_L"),
SND_SOC_DAPM_OUTPUT("HP_R"),
SND_SOC_DAPM_INPUT("RINPUT1"),
SND_SOC_DAPM_INPUT("LINPUT1"),
SND_SOC_DAPM_INPUT("RINPUT2"),
SND_SOC_DAPM_INPUT("LINPUT2"),
SND_SOC_DAPM_INPUT("RINPUT3"),
SND_SOC_DAPM_INPUT("LINPUT3"),
SND_SOC_DAPM_INPUT("AUX"),
SND_SOC_DAPM_VMID("VMID"),
/* Input */
SND_SOC_DAPM_MIXER("Left Input PGA", WM8900_REG_POWER2, 3, 0,
wm8900_linpga_controls,
ARRAY_SIZE(wm8900_linpga_controls)),
SND_SOC_DAPM_MIXER("Right Input PGA", WM8900_REG_POWER2, 2, 0,
wm8900_rinpga_controls,
ARRAY_SIZE(wm8900_rinpga_controls)),
SND_SOC_DAPM_MIXER("Left Input Mixer", WM8900_REG_POWER2, 5, 0,
wm8900_linmix_controls,
ARRAY_SIZE(wm8900_linmix_controls)),
SND_SOC_DAPM_MIXER("Right Input Mixer", WM8900_REG_POWER2, 4, 0,
wm8900_rinmix_controls,
ARRAY_SIZE(wm8900_rinmix_controls)),
SND_SOC_DAPM_MICBIAS("Mic Bias", WM8900_REG_POWER1, 4, 0),
SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8900_REG_POWER2, 1, 0),
SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8900_REG_POWER2, 0, 0),
/* Output */
SND_SOC_DAPM_DAC("DACL", "Left HiFi Playback", WM8900_REG_POWER3, 1, 0),
SND_SOC_DAPM_DAC("DACR", "Right HiFi Playback", WM8900_REG_POWER3, 0, 0),
SND_SOC_DAPM_PGA_E("Headphone Amplifier", WM8900_REG_POWER3, 7, 0, NULL, 0,
wm8900_hp_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA("LINEOUT1L PGA", WM8900_REG_POWER2, 8, 0, NULL, 0),
SND_SOC_DAPM_PGA("LINEOUT1R PGA", WM8900_REG_POWER2, 7, 0, NULL, 0),
SND_SOC_DAPM_MUX("LINEOUT2 LP", SND_SOC_NOPM, 0, 0, &wm8900_lineout2_lp),
SND_SOC_DAPM_PGA("LINEOUT2L PGA", WM8900_REG_POWER3, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("LINEOUT2R PGA", WM8900_REG_POWER3, 5, 0, NULL, 0),
SND_SOC_DAPM_MIXER("Left Output Mixer", WM8900_REG_POWER3, 3, 0,
wm8900_loutmix_controls,
ARRAY_SIZE(wm8900_loutmix_controls)),
SND_SOC_DAPM_MIXER("Right Output Mixer", WM8900_REG_POWER3, 2, 0,
wm8900_routmix_controls,
ARRAY_SIZE(wm8900_routmix_controls)),
};
/* Target, Path, Source */
static const struct snd_soc_dapm_route audio_map[] = {
/* Inputs */
{"Left Input PGA", "LINPUT1 Switch", "LINPUT1"},
{"Left Input PGA", "LINPUT2 Switch", "LINPUT2"},
{"Left Input PGA", "LINPUT3 Switch", "LINPUT3"},
{"Right Input PGA", "RINPUT1 Switch", "RINPUT1"},
{"Right Input PGA", "RINPUT2 Switch", "RINPUT2"},
{"Right Input PGA", "RINPUT3 Switch", "RINPUT3"},
{"Left Input Mixer", "LINPUT2 Switch", "LINPUT2"},
{"Left Input Mixer", "LINPUT3 Switch", "LINPUT3"},
{"Left Input Mixer", "AUX Switch", "AUX"},
{"Left Input Mixer", "Input PGA Switch", "Left Input PGA"},
{"Right Input Mixer", "RINPUT2 Switch", "RINPUT2"},
{"Right Input Mixer", "RINPUT3 Switch", "RINPUT3"},
{"Right Input Mixer", "AUX Switch", "AUX"},
{"Right Input Mixer", "Input PGA Switch", "Right Input PGA"},
{"ADCL", NULL, "Left Input Mixer"},
{"ADCR", NULL, "Right Input Mixer"},
/* Outputs */
{"LINEOUT1L", NULL, "LINEOUT1L PGA"},
{"LINEOUT1L PGA", NULL, "Left Output Mixer"},
{"LINEOUT1R", NULL, "LINEOUT1R PGA"},
{"LINEOUT1R PGA", NULL, "Right Output Mixer"},
{"LINEOUT2L PGA", NULL, "Left Output Mixer"},
{"LINEOUT2 LP", "Disabled", "LINEOUT2L PGA"},
{"LINEOUT2 LP", "Enabled", "Left Output Mixer"},
{"LINEOUT2L", NULL, "LINEOUT2 LP"},
{"LINEOUT2R PGA", NULL, "Right Output Mixer"},
{"LINEOUT2 LP", "Disabled", "LINEOUT2R PGA"},
{"LINEOUT2 LP", "Enabled", "Right Output Mixer"},
{"LINEOUT2R", NULL, "LINEOUT2 LP"},
{"Left Output Mixer", "LINPUT3 Bypass Switch", "LINPUT3"},
{"Left Output Mixer", "AUX Bypass Switch", "AUX"},
{"Left Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
{"Left Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
{"Left Output Mixer", "DACL Switch", "DACL"},
{"Right Output Mixer", "RINPUT3 Bypass Switch", "RINPUT3"},
{"Right Output Mixer", "AUX Bypass Switch", "AUX"},
{"Right Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
{"Right Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
{"Right Output Mixer", "DACR Switch", "DACR"},
/* Note that the headphone output stage needs to be connected
* externally to LINEOUT2 via DC blocking capacitors. Other
* configurations are not supported.
*
* Note also that left and right headphone paths are treated as a
* mono path.
*/
{"Headphone Amplifier", NULL, "LINEOUT2 LP"},
{"Headphone Amplifier", NULL, "LINEOUT2 LP"},
{"HP_L", NULL, "Headphone Amplifier"},
{"HP_R", NULL, "Headphone Amplifier"},
};
static int wm8900_add_widgets(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_new_controls(dapm, wm8900_dapm_widgets,
ARRAY_SIZE(wm8900_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
static int wm8900_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
u16 reg;
reg = snd_soc_read(codec, WM8900_REG_AUDIO1) & ~0x60;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
reg |= 0x20;
break;
case SNDRV_PCM_FORMAT_S24_LE:
reg |= 0x40;
break;
case SNDRV_PCM_FORMAT_S32_LE:
reg |= 0x60;
break;
default:
return -EINVAL;
}
snd_soc_write(codec, WM8900_REG_AUDIO1, reg);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
reg = snd_soc_read(codec, WM8900_REG_DACCTRL);
if (params_rate(params) <= 24000)
reg |= WM8900_REG_DACCTRL_DAC_SB_FILT;
else
reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT;
snd_soc_write(codec, WM8900_REG_DACCTRL, reg);
}
return 0;
}
/* FLL divisors */
struct _fll_div {
u16 fll_ratio;
u16 fllclk_div;
u16 fll_slow_lock_ref;
u16 n;
u16 k;
};
/* The size in bits of the FLL divide multiplied by 10
* to allow rounding later */
#define FIXED_FLL_SIZE ((1 << 16) * 10)
static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
unsigned int Fout)
{
u64 Kpart;
unsigned int K, Ndiv, Nmod, target;
unsigned int div;
BUG_ON(!Fout);
/* The FLL must run at 90-100MHz which is then scaled down to
* the output value by FLLCLK_DIV. */
target = Fout;
div = 1;
while (target < 90000000) {
div *= 2;
target *= 2;
}
if (target > 100000000)
printk(KERN_WARNING "wm8900: FLL rate %u out of range, Fref=%u"
" Fout=%u\n", target, Fref, Fout);
if (div > 32) {
printk(KERN_ERR "wm8900: Invalid FLL division rate %u, "
"Fref=%u, Fout=%u, target=%u\n",
div, Fref, Fout, target);
return -EINVAL;
}
fll_div->fllclk_div = div >> 2;
if (Fref < 48000)
fll_div->fll_slow_lock_ref = 1;
else
fll_div->fll_slow_lock_ref = 0;
Ndiv = target / Fref;
if (Fref < 1000000)
fll_div->fll_ratio = 8;
else
fll_div->fll_ratio = 1;
fll_div->n = Ndiv / fll_div->fll_ratio;
Nmod = (target / fll_div->fll_ratio) % Fref;
/* Calculate fractional part - scale up so we can round. */
Kpart = FIXED_FLL_SIZE * (long long)Nmod;
do_div(Kpart, Fref);
K = Kpart & 0xFFFFFFFF;
if ((K % 10) >= 5)
K += 5;
/* Move down to proper range now rounding is done */
fll_div->k = K / 10;
BUG_ON(target != Fout * (fll_div->fllclk_div << 2));
BUG_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n);
return 0;
}
static int wm8900_set_fll(struct snd_soc_codec *codec,
int fll_id, unsigned int freq_in, unsigned int freq_out)
{
struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
struct _fll_div fll_div;
unsigned int reg;
if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out)
return 0;
/* The digital side should be disabled during any change. */
reg = snd_soc_read(codec, WM8900_REG_POWER1);
snd_soc_write(codec, WM8900_REG_POWER1,
reg & (~WM8900_REG_POWER1_FLL_ENA));
/* Disable the FLL? */
if (!freq_in || !freq_out) {
reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
snd_soc_write(codec, WM8900_REG_CLOCKING1,
reg & (~WM8900_REG_CLOCKING1_MCLK_SRC));
reg = snd_soc_read(codec, WM8900_REG_FLLCTL1);
snd_soc_write(codec, WM8900_REG_FLLCTL1,
reg & (~WM8900_REG_FLLCTL1_OSC_ENA));
wm8900->fll_in = freq_in;
wm8900->fll_out = freq_out;
return 0;
}
if (fll_factors(&fll_div, freq_in, freq_out) != 0)
goto reenable;
wm8900->fll_in = freq_in;
wm8900->fll_out = freq_out;
/* The osclilator *MUST* be enabled before we enable the
* digital circuit. */
snd_soc_write(codec, WM8900_REG_FLLCTL1,
fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA);
snd_soc_write(codec, WM8900_REG_FLLCTL4, fll_div.n >> 5);
snd_soc_write(codec, WM8900_REG_FLLCTL5,
(fll_div.fllclk_div << 6) | (fll_div.n & 0x1f));
if (fll_div.k) {
snd_soc_write(codec, WM8900_REG_FLLCTL2,
(fll_div.k >> 8) | 0x100);
snd_soc_write(codec, WM8900_REG_FLLCTL3, fll_div.k & 0xff);
} else
snd_soc_write(codec, WM8900_REG_FLLCTL2, 0);
if (fll_div.fll_slow_lock_ref)
snd_soc_write(codec, WM8900_REG_FLLCTL6,
WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF);
else
snd_soc_write(codec, WM8900_REG_FLLCTL6, 0);
reg = snd_soc_read(codec, WM8900_REG_POWER1);
snd_soc_write(codec, WM8900_REG_POWER1,
reg | WM8900_REG_POWER1_FLL_ENA);
reenable:
reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
snd_soc_write(codec, WM8900_REG_CLOCKING1,
reg | WM8900_REG_CLOCKING1_MCLK_SRC);
return 0;
}
static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
return wm8900_set_fll(codec_dai->codec, pll_id, freq_in, freq_out);
}
static int wm8900_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
int div_id, int div)
{
struct snd_soc_codec *codec = codec_dai->codec;
unsigned int reg;
switch (div_id) {
case WM8900_BCLK_DIV:
reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
snd_soc_write(codec, WM8900_REG_CLOCKING1,
div | (reg & WM8900_REG_CLOCKING1_BCLK_MASK));
break;
case WM8900_OPCLK_DIV:
reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
snd_soc_write(codec, WM8900_REG_CLOCKING1,
div | (reg & WM8900_REG_CLOCKING1_OPCLK_MASK));
break;
case WM8900_DAC_LRCLK:
reg = snd_soc_read(codec, WM8900_REG_AUDIO4);
snd_soc_write(codec, WM8900_REG_AUDIO4,
div | (reg & WM8900_LRC_MASK));
break;
case WM8900_ADC_LRCLK:
reg = snd_soc_read(codec, WM8900_REG_AUDIO3);
snd_soc_write(codec, WM8900_REG_AUDIO3,
div | (reg & WM8900_LRC_MASK));
break;
case WM8900_DAC_CLKDIV:
reg = snd_soc_read(codec, WM8900_REG_CLOCKING2);
snd_soc_write(codec, WM8900_REG_CLOCKING2,
div | (reg & WM8900_REG_CLOCKING2_DAC_CLKDIV));
break;
case WM8900_ADC_CLKDIV:
reg = snd_soc_read(codec, WM8900_REG_CLOCKING2);
snd_soc_write(codec, WM8900_REG_CLOCKING2,
div | (reg & WM8900_REG_CLOCKING2_ADC_CLKDIV));
break;
case WM8900_LRCLK_MODE:
reg = snd_soc_read(codec, WM8900_REG_DACCTRL);
snd_soc_write(codec, WM8900_REG_DACCTRL,
div | (reg & WM8900_REG_DACCTRL_AIF_LRCLKRATE));
break;
default:
return -EINVAL;
}
return 0;
}
static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
unsigned int clocking1, aif1, aif3, aif4;
clocking1 = snd_soc_read(codec, WM8900_REG_CLOCKING1);
aif1 = snd_soc_read(codec, WM8900_REG_AUDIO1);
aif3 = snd_soc_read(codec, WM8900_REG_AUDIO3);
aif4 = snd_soc_read(codec, WM8900_REG_AUDIO4);
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
break;
case SND_SOC_DAIFMT_CBS_CFM:
clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
break;
case SND_SOC_DAIFMT_CBM_CFM:
clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
break;
case SND_SOC_DAIFMT_CBM_CFS:
clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_DSP_B:
aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_I2S:
aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
aif1 |= 0x10;
break;
case SND_SOC_DAIFMT_RIGHT_J:
aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
break;
case SND_SOC_DAIFMT_LEFT_J:
aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
aif1 |= 0x8;
break;
default:
return -EINVAL;
}
/* Clock inversion */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
case SND_SOC_DAIFMT_DSP_B:
/* frame inversion not valid for DSP modes */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_IF:
aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
snd_soc_write(codec, WM8900_REG_CLOCKING1, clocking1);
snd_soc_write(codec, WM8900_REG_AUDIO1, aif1);
snd_soc_write(codec, WM8900_REG_AUDIO3, aif3);
snd_soc_write(codec, WM8900_REG_AUDIO4, aif4);
return 0;
}
static int wm8900_digital_mute(struct snd_soc_dai *codec_dai, int mute)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 reg;
reg = snd_soc_read(codec, WM8900_REG_DACCTRL);
if (mute)
reg |= WM8900_REG_DACCTRL_MUTE;
else
reg &= ~WM8900_REG_DACCTRL_MUTE;
snd_soc_write(codec, WM8900_REG_DACCTRL, reg);
return 0;
}
#define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
#define WM8900_PCM_FORMATS \
(SNDRV_PCM_FORMAT_S16_LE | SNDRV_PCM_FORMAT_S20_3LE | \
SNDRV_PCM_FORMAT_S24_LE)
static struct snd_soc_dai_ops wm8900_dai_ops = {
.hw_params = wm8900_hw_params,
.set_clkdiv = wm8900_set_dai_clkdiv,
.set_pll = wm8900_set_dai_pll,
.set_fmt = wm8900_set_dai_fmt,
.digital_mute = wm8900_digital_mute,
};
static struct snd_soc_dai_driver wm8900_dai = {
.name = "wm8900-hifi",
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8900_RATES,
.formats = WM8900_PCM_FORMATS,
},
.capture = {
.stream_name = "HiFi Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8900_RATES,
.formats = WM8900_PCM_FORMATS,
},
.ops = &wm8900_dai_ops,
};
static int wm8900_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 reg;
switch (level) {
case SND_SOC_BIAS_ON:
/* Enable thermal shutdown */
reg = snd_soc_read(codec, WM8900_REG_GPIO);
snd_soc_write(codec, WM8900_REG_GPIO,
reg | WM8900_REG_GPIO_TEMP_ENA);
reg = snd_soc_read(codec, WM8900_REG_ADDCTL);
snd_soc_write(codec, WM8900_REG_ADDCTL,
reg | WM8900_REG_ADDCTL_TEMP_SD);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
/* Charge capacitors if initial power up */
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
/* STARTUP_BIAS_ENA on */
snd_soc_write(codec, WM8900_REG_POWER1,
WM8900_REG_POWER1_STARTUP_BIAS_ENA);
/* Startup bias mode */
snd_soc_write(codec, WM8900_REG_ADDCTL,
WM8900_REG_ADDCTL_BIAS_SRC |
WM8900_REG_ADDCTL_VMID_SOFTST);
/* VMID 2x50k */
snd_soc_write(codec, WM8900_REG_POWER1,
WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1);
/* Allow capacitors to charge */
schedule_timeout_interruptible(msecs_to_jiffies(400));
/* Enable bias */
snd_soc_write(codec, WM8900_REG_POWER1,
WM8900_REG_POWER1_STARTUP_BIAS_ENA |
WM8900_REG_POWER1_BIAS_ENA | 0x1);
snd_soc_write(codec, WM8900_REG_ADDCTL, 0);
snd_soc_write(codec, WM8900_REG_POWER1,
WM8900_REG_POWER1_BIAS_ENA | 0x1);
}
reg = snd_soc_read(codec, WM8900_REG_POWER1);
snd_soc_write(codec, WM8900_REG_POWER1,
(reg & WM8900_REG_POWER1_FLL_ENA) |
WM8900_REG_POWER1_BIAS_ENA | 0x1);
snd_soc_write(codec, WM8900_REG_POWER2,
WM8900_REG_POWER2_SYSCLK_ENA);
snd_soc_write(codec, WM8900_REG_POWER3, 0);
break;
case SND_SOC_BIAS_OFF:
/* Startup bias enable */
reg = snd_soc_read(codec, WM8900_REG_POWER1);
snd_soc_write(codec, WM8900_REG_POWER1,
reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA);
snd_soc_write(codec, WM8900_REG_ADDCTL,
WM8900_REG_ADDCTL_BIAS_SRC |
WM8900_REG_ADDCTL_VMID_SOFTST);
/* Discharge caps */
snd_soc_write(codec, WM8900_REG_POWER1,
WM8900_REG_POWER1_STARTUP_BIAS_ENA);
schedule_timeout_interruptible(msecs_to_jiffies(500));
/* Remove clamp */
snd_soc_write(codec, WM8900_REG_HPCTL1, 0);
/* Power down */
snd_soc_write(codec, WM8900_REG_ADDCTL, 0);
snd_soc_write(codec, WM8900_REG_POWER1, 0);
snd_soc_write(codec, WM8900_REG_POWER2, 0);
snd_soc_write(codec, WM8900_REG_POWER3, 0);
/* Need to let things settle before stopping the clock
* to ensure that restart works, see "Stopping the
* master clock" in the datasheet. */
schedule_timeout_interruptible(msecs_to_jiffies(1));
snd_soc_write(codec, WM8900_REG_POWER2,
WM8900_REG_POWER2_SYSCLK_ENA);
break;
}
codec->dapm.bias_level = level;
return 0;
}
static int wm8900_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
int fll_out = wm8900->fll_out;
int fll_in = wm8900->fll_in;
int ret;
/* Stop the FLL in an orderly fashion */
ret = wm8900_set_fll(codec, 0, 0, 0);
if (ret != 0) {
dev_err(codec->dev, "Failed to stop FLL\n");
return ret;
}
wm8900->fll_out = fll_out;
wm8900->fll_in = fll_in;
wm8900_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8900_resume(struct snd_soc_codec *codec)
{
struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
u16 *cache;
int i, ret;
cache = kmemdup(codec->reg_cache, sizeof(wm8900_reg_defaults),
GFP_KERNEL);
wm8900_reset(codec);
wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Restart the FLL? */
if (wm8900->fll_out) {
int fll_out = wm8900->fll_out;
int fll_in = wm8900->fll_in;
wm8900->fll_in = 0;
wm8900->fll_out = 0;
ret = wm8900_set_fll(codec, 0, fll_in, fll_out);
if (ret != 0) {
dev_err(codec->dev, "Failed to restart FLL\n");
return ret;
}
}
if (cache) {
for (i = 0; i < WM8900_MAXREG; i++)
snd_soc_write(codec, i, cache[i]);
kfree(cache);
} else
dev_err(codec->dev, "Unable to allocate register cache\n");
return 0;
}
static int wm8900_probe(struct snd_soc_codec *codec)
{
struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
int ret = 0, reg;
ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8900->control_type);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
reg = snd_soc_read(codec, WM8900_REG_ID);
if (reg != 0x8900) {
dev_err(codec->dev, "Device is not a WM8900 - ID %x\n", reg);
return -ENODEV;
}
wm8900_reset(codec);
/* Turn the chip on */
wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Latch the volume update bits */
snd_soc_write(codec, WM8900_REG_LINVOL,
snd_soc_read(codec, WM8900_REG_LINVOL) | 0x100);
snd_soc_write(codec, WM8900_REG_RINVOL,
snd_soc_read(codec, WM8900_REG_RINVOL) | 0x100);
snd_soc_write(codec, WM8900_REG_LOUT1CTL,
snd_soc_read(codec, WM8900_REG_LOUT1CTL) | 0x100);
snd_soc_write(codec, WM8900_REG_ROUT1CTL,
snd_soc_read(codec, WM8900_REG_ROUT1CTL) | 0x100);
snd_soc_write(codec, WM8900_REG_LOUT2CTL,
snd_soc_read(codec, WM8900_REG_LOUT2CTL) | 0x100);
snd_soc_write(codec, WM8900_REG_ROUT2CTL,
snd_soc_read(codec, WM8900_REG_ROUT2CTL) | 0x100);
snd_soc_write(codec, WM8900_REG_LDAC_DV,
snd_soc_read(codec, WM8900_REG_LDAC_DV) | 0x100);
snd_soc_write(codec, WM8900_REG_RDAC_DV,
snd_soc_read(codec, WM8900_REG_RDAC_DV) | 0x100);
snd_soc_write(codec, WM8900_REG_LADC_DV,
snd_soc_read(codec, WM8900_REG_LADC_DV) | 0x100);
snd_soc_write(codec, WM8900_REG_RADC_DV,
snd_soc_read(codec, WM8900_REG_RADC_DV) | 0x100);
/* Set the DAC and mixer output bias */
snd_soc_write(codec, WM8900_REG_OUTBIASCTL, 0x81);
snd_soc_add_controls(codec, wm8900_snd_controls,
ARRAY_SIZE(wm8900_snd_controls));
wm8900_add_widgets(codec);
return 0;
}
/* power down chip */
static int wm8900_remove(struct snd_soc_codec *codec)
{
wm8900_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8900 = {
.probe = wm8900_probe,
.remove = wm8900_remove,
.suspend = wm8900_suspend,
.resume = wm8900_resume,
.set_bias_level = wm8900_set_bias_level,
.volatile_register = wm8900_volatile_register,
.reg_cache_size = ARRAY_SIZE(wm8900_reg_defaults),
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8900_reg_defaults,
};
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8900_spi_probe(struct spi_device *spi)
{
struct wm8900_priv *wm8900;
int ret;
wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
if (wm8900 == NULL)
return -ENOMEM;
wm8900->control_type = SND_SOC_SPI;
spi_set_drvdata(spi, wm8900);
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8900, &wm8900_dai, 1);
if (ret < 0)
kfree(wm8900);
return ret;
}
static int __devexit wm8900_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
kfree(spi_get_drvdata(spi));
return 0;
}
static struct spi_driver wm8900_spi_driver = {
.driver = {
.name = "wm8900-codec",
.owner = THIS_MODULE,
},
.probe = wm8900_spi_probe,
.remove = __devexit_p(wm8900_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8900_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8900_priv *wm8900;
int ret;
wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
if (wm8900 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, wm8900);
wm8900->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8900, &wm8900_dai, 1);
if (ret < 0)
kfree(wm8900);
return ret;
}
static __devexit int wm8900_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
kfree(i2c_get_clientdata(client));
return 0;
}
static const struct i2c_device_id wm8900_i2c_id[] = {
{ "wm8900", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8900_i2c_id);
static struct i2c_driver wm8900_i2c_driver = {
.driver = {
.name = "wm8900-codec",
.owner = THIS_MODULE,
},
.probe = wm8900_i2c_probe,
.remove = __devexit_p(wm8900_i2c_remove),
.id_table = wm8900_i2c_id,
};
#endif
static int __init wm8900_modinit(void)
{
int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8900_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register wm8900 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8900_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register wm8900 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8900_modinit);
static void __exit wm8900_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8900_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8900_spi_driver);
#endif
}
module_exit(wm8900_exit);
MODULE_DESCRIPTION("ASoC WM8900 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
MODULE_LICENSE("GPL");