/*
* wm8993.c -- WM8993 ALSA SoC audio driver
*
* Copyright 2009 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.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/wm8993.h>
#include "wm8993.h"
#include "wm_hubs.h"
static u16 wm8993_reg_defaults[WM8993_REGISTER_COUNT] = {
0x8993, /* R0 - Software Reset */
0x0000, /* R1 - Power Management (1) */
0x6000, /* R2 - Power Management (2) */
0x0000, /* R3 - Power Management (3) */
0x4050, /* R4 - Audio Interface (1) */
0x4000, /* R5 - Audio Interface (2) */
0x01C8, /* R6 - Clocking 1 */
0x0000, /* R7 - Clocking 2 */
0x0000, /* R8 - Audio Interface (3) */
0x0040, /* R9 - Audio Interface (4) */
0x0004, /* R10 - DAC CTRL */
0x00C0, /* R11 - Left DAC Digital Volume */
0x00C0, /* R12 - Right DAC Digital Volume */
0x0000, /* R13 - Digital Side Tone */
0x0300, /* R14 - ADC CTRL */
0x00C0, /* R15 - Left ADC Digital Volume */
0x00C0, /* R16 - Right ADC Digital Volume */
0x0000, /* R17 */
0x0000, /* R18 - GPIO CTRL 1 */
0x0010, /* R19 - GPIO1 */
0x0000, /* R20 - IRQ_DEBOUNCE */
0x0000, /* R21 */
0x8000, /* R22 - GPIOCTRL 2 */
0x0800, /* R23 - GPIO_POL */
0x008B, /* R24 - Left Line Input 1&2 Volume */
0x008B, /* R25 - Left Line Input 3&4 Volume */
0x008B, /* R26 - Right Line Input 1&2 Volume */
0x008B, /* R27 - Right Line Input 3&4 Volume */
0x006D, /* R28 - Left Output Volume */
0x006D, /* R29 - Right Output Volume */
0x0066, /* R30 - Line Outputs Volume */
0x0020, /* R31 - HPOUT2 Volume */
0x0079, /* R32 - Left OPGA Volume */
0x0079, /* R33 - Right OPGA Volume */
0x0003, /* R34 - SPKMIXL Attenuation */
0x0003, /* R35 - SPKMIXR Attenuation */
0x0011, /* R36 - SPKOUT Mixers */
0x0100, /* R37 - SPKOUT Boost */
0x0079, /* R38 - Speaker Volume Left */
0x0079, /* R39 - Speaker Volume Right */
0x0000, /* R40 - Input Mixer2 */
0x0000, /* R41 - Input Mixer3 */
0x0000, /* R42 - Input Mixer4 */
0x0000, /* R43 - Input Mixer5 */
0x0000, /* R44 - Input Mixer6 */
0x0000, /* R45 - Output Mixer1 */
0x0000, /* R46 - Output Mixer2 */
0x0000, /* R47 - Output Mixer3 */
0x0000, /* R48 - Output Mixer4 */
0x0000, /* R49 - Output Mixer5 */
0x0000, /* R50 - Output Mixer6 */
0x0000, /* R51 - HPOUT2 Mixer */
0x0000, /* R52 - Line Mixer1 */
0x0000, /* R53 - Line Mixer2 */
0x0000, /* R54 - Speaker Mixer */
0x0000, /* R55 - Additional Control */
0x0000, /* R56 - AntiPOP1 */
0x0000, /* R57 - AntiPOP2 */
0x0000, /* R58 - MICBIAS */
0x0000, /* R59 */
0x0000, /* R60 - FLL Control 1 */
0x0000, /* R61 - FLL Control 2 */
0x0000, /* R62 - FLL Control 3 */
0x2EE0, /* R63 - FLL Control 4 */
0x0002, /* R64 - FLL Control 5 */
0x2287, /* R65 - Clocking 3 */
0x025F, /* R66 - Clocking 4 */
0x0000, /* R67 - MW Slave Control */
0x0000, /* R68 */
0x0002, /* R69 - Bus Control 1 */
0x0000, /* R70 - Write Sequencer 0 */
0x0000, /* R71 - Write Sequencer 1 */
0x0000, /* R72 - Write Sequencer 2 */
0x0000, /* R73 - Write Sequencer 3 */
0x0000, /* R74 - Write Sequencer 4 */
0x0000, /* R75 - Write Sequencer 5 */
0x1F25, /* R76 - Charge Pump 1 */
0x0000, /* R77 */
0x0000, /* R78 */
0x0000, /* R79 */
0x0000, /* R80 */
0x0000, /* R81 - Class W 0 */
0x0000, /* R82 */
0x0000, /* R83 */
0x0000, /* R84 - DC Servo 0 */
0x054A, /* R85 - DC Servo 1 */
0x0000, /* R86 */
0x0000, /* R87 - DC Servo 3 */
0x0000, /* R88 - DC Servo Readback 0 */
0x0000, /* R89 - DC Servo Readback 1 */
0x0000, /* R90 - DC Servo Readback 2 */
0x0000, /* R91 */
0x0000, /* R92 */
0x0000, /* R93 */
0x0000, /* R94 */
0x0000, /* R95 */
0x0100, /* R96 - Analogue HP 0 */
0x0000, /* R97 */
0x0000, /* R98 - EQ1 */
0x000C, /* R99 - EQ2 */
0x000C, /* R100 - EQ3 */
0x000C, /* R101 - EQ4 */
0x000C, /* R102 - EQ5 */
0x000C, /* R103 - EQ6 */
0x0FCA, /* R104 - EQ7 */
0x0400, /* R105 - EQ8 */
0x00D8, /* R106 - EQ9 */
0x1EB5, /* R107 - EQ10 */
0xF145, /* R108 - EQ11 */
0x0B75, /* R109 - EQ12 */
0x01C5, /* R110 - EQ13 */
0x1C58, /* R111 - EQ14 */
0xF373, /* R112 - EQ15 */
0x0A54, /* R113 - EQ16 */
0x0558, /* R114 - EQ17 */
0x168E, /* R115 - EQ18 */
0xF829, /* R116 - EQ19 */
0x07AD, /* R117 - EQ20 */
0x1103, /* R118 - EQ21 */
0x0564, /* R119 - EQ22 */
0x0559, /* R120 - EQ23 */
0x4000, /* R121 - EQ24 */
0x0000, /* R122 - Digital Pulls */
0x0F08, /* R123 - DRC Control 1 */
0x0000, /* R124 - DRC Control 2 */
0x0080, /* R125 - DRC Control 3 */
0x0000, /* R126 - DRC Control 4 */
};
static struct {
int ratio;
int clk_sys_rate;
} clk_sys_rates[] = {
{ 64, 0 },
{ 128, 1 },
{ 192, 2 },
{ 256, 3 },
{ 384, 4 },
{ 512, 5 },
{ 768, 6 },
{ 1024, 7 },
{ 1408, 8 },
{ 1536, 9 },
};
static struct {
int rate;
int sample_rate;
} sample_rates[] = {
{ 8000, 0 },
{ 11025, 1 },
{ 12000, 1 },
{ 16000, 2 },
{ 22050, 3 },
{ 24000, 3 },
{ 32000, 4 },
{ 44100, 5 },
{ 48000, 5 },
};
static struct {
int div; /* *10 due to .5s */
int bclk_div;
} bclk_divs[] = {
{ 10, 0 },
{ 15, 1 },
{ 20, 2 },
{ 30, 3 },
{ 40, 4 },
{ 55, 5 },
{ 60, 6 },
{ 80, 7 },
{ 110, 8 },
{ 120, 9 },
{ 160, 10 },
{ 220, 11 },
{ 240, 12 },
{ 320, 13 },
{ 440, 14 },
{ 480, 15 },
};
struct wm8993_priv {
u16 reg_cache[WM8993_REGISTER_COUNT];
struct wm8993_platform_data pdata;
struct snd_soc_codec codec;
int master;
int sysclk_source;
unsigned int mclk_rate;
unsigned int sysclk_rate;
unsigned int fs;
unsigned int bclk;
int class_w_users;
unsigned int fll_fref;
unsigned int fll_fout;
};
static unsigned int wm8993_read_hw(struct snd_soc_codec *codec, u8 reg)
{
struct i2c_msg xfer[2];
u16 data;
int ret;
struct i2c_client *i2c = codec->control_data;
/* Write register */
xfer[0].addr = i2c->addr;
xfer[0].flags = 0;
xfer[0].len = 1;
xfer[0].buf = ®
/* Read data */
xfer[1].addr = i2c->addr;
xfer[1].flags = I2C_M_RD;
xfer[1].len = 2;
xfer[1].buf = (u8 *)&data;
ret = i2c_transfer(i2c->adapter, xfer, 2);
if (ret != 2) {
dev_err(codec->dev, "Failed to read 0x%x: %d\n", reg, ret);
return 0;
}
return (data >> 8) | ((data & 0xff) << 8);
}
static int wm8993_volatile(unsigned int reg)
{
switch (reg) {
case WM8993_SOFTWARE_RESET:
case WM8993_DC_SERVO_0:
case WM8993_DC_SERVO_READBACK_0:
case WM8993_DC_SERVO_READBACK_1:
case WM8993_DC_SERVO_READBACK_2:
return 1;
default:
return 0;
}
}
static unsigned int wm8993_read(struct snd_soc_codec *codec,
unsigned int reg)
{
u16 *reg_cache = codec->reg_cache;
BUG_ON(reg > WM8993_MAX_REGISTER);
if (wm8993_volatile(reg))
return wm8993_read_hw(codec, reg);
else
return reg_cache[reg];
}
static int wm8993_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
u16 *reg_cache = codec->reg_cache;
u8 data[3];
int ret;
BUG_ON(reg > WM8993_MAX_REGISTER);
/* data is
* D15..D9 WM8993 register offset
* D8...D0 register data
*/
data[0] = reg;
data[1] = value >> 8;
data[2] = value & 0x00ff;
if (!wm8993_volatile(reg))
reg_cache[reg] = value;
ret = codec->hw_write(codec->control_data, data, 3);
if (ret == 3)
return 0;
if (ret < 0)
return ret;
return -EIO;
}
struct _fll_div {
u16 fll_fratio;
u16 fll_outdiv;
u16 fll_clk_ref_div;
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 struct {
unsigned int min;
unsigned int max;
u16 fll_fratio;
int ratio;
} fll_fratios[] = {
{ 0, 64000, 4, 16 },
{ 64000, 128000, 3, 8 },
{ 128000, 256000, 2, 4 },
{ 256000, 1000000, 1, 2 },
{ 1000000, 13500000, 0, 1 },
};
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;
int i;
/* Fref must be <=13.5MHz */
div = 1;
fll_div->fll_clk_ref_div = 0;
while ((Fref / div) > 13500000) {
div *= 2;
fll_div->fll_clk_ref_div++;
if (div > 8) {
pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
Fref);
return -EINVAL;
}
}
pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
/* Apply the division for our remaining calculations */
Fref /= div;
/* Fvco should be 90-100MHz; don't check the upper bound */
div = 0;
target = Fout * 2;
while (target < 90000000) {
div++;
target *= 2;
if (div > 7) {
pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
Fout);
return -EINVAL;
}
}
fll_div->fll_outdiv = div;
pr_debug("Fvco=%dHz\n", target);
/* Find an appropraite FLL_FRATIO and factor it out of the target */
for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
fll_div->fll_fratio = fll_fratios[i].fll_fratio;
target /= fll_fratios[i].ratio;
break;
}
}
if (i == ARRAY_SIZE(fll_fratios)) {
pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
return -EINVAL;
}
/* Now, calculate N.K */
Ndiv = target / Fref;
fll_div->n = Ndiv;
Nmod = target % Fref;
pr_debug("Nmod=%d\n", Nmod);
/* 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;
pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
fll_div->n, fll_div->k,
fll_div->fll_fratio, fll_div->fll_outdiv,
fll_div->fll_clk_ref_div);
return 0;
}
static int wm8993_set_fll(struct snd_soc_dai *dai, int fll_id,
unsigned int Fref, unsigned int Fout)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8993_priv *wm8993 = codec->private_data;
u16 reg1, reg4, reg5;
struct _fll_div fll_div;
int ret;
/* Any change? */
if (Fref == wm8993->fll_fref && Fout == wm8993->fll_fout)
return 0;
/* Disable the FLL */
if (Fout == 0) {
dev_dbg(codec->dev, "FLL disabled\n");
wm8993->fll_fref = 0;
wm8993->fll_fout = 0;
reg1 = wm8993_read(codec, WM8993_FLL_CONTROL_1);
reg1 &= ~WM8993_FLL_ENA;
wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1);
return 0;
}
ret = fll_factors(&fll_div, Fref, Fout);
if (ret != 0)
return ret;
reg5 = wm8993_read(codec, WM8993_FLL_CONTROL_5);
reg5 &= ~WM8993_FLL_CLK_SRC_MASK;
switch (fll_id) {
case WM8993_FLL_MCLK:
break;
case WM8993_FLL_LRCLK:
reg5 |= 1;
break;
case WM8993_FLL_BCLK:
reg5 |= 2;
break;
default:
dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
return -EINVAL;
}
/* Any FLL configuration change requires that the FLL be
* disabled first. */
reg1 = wm8993_read(codec, WM8993_FLL_CONTROL_1);
reg1 &= ~WM8993_FLL_ENA;
wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1);
/* Apply the configuration */
if (fll_div.k)
reg1 |= WM8993_FLL_FRAC_MASK;
else
reg1 &= ~WM8993_FLL_FRAC_MASK;
wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1);
wm8993_write(codec, WM8993_FLL_CONTROL_2,
(fll_div.fll_outdiv << WM8993_FLL_OUTDIV_SHIFT) |
(fll_div.fll_fratio << WM8993_FLL_FRATIO_SHIFT));
wm8993_write(codec, WM8993_FLL_CONTROL_3, fll_div.k);
reg4 = wm8993_read(codec, WM8993_FLL_CONTROL_4);
reg4 &= ~WM8993_FLL_N_MASK;
reg4 |= fll_div.n << WM8993_FLL_N_SHIFT;
wm8993_write(codec, WM8993_FLL_CONTROL_4, reg4);
reg5 &= ~WM8993_FLL_CLK_REF_DIV_MASK;
reg5 |= fll_div.fll_clk_ref_div << WM8993_FLL_CLK_REF_DIV_SHIFT;
wm8993_write(codec, WM8993_FLL_CONTROL_5, reg5);
/* Enable the FLL */
wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
wm8993->fll_fref = Fref;
wm8993->fll_fout = Fout;
return 0;
}
static int configure_clock(struct snd_soc_codec *codec)
{
struct wm8993_priv *wm8993 = codec->private_data;
unsigned int reg;
/* This should be done on init() for bypass paths */
switch (wm8993->sysclk_source) {
case WM8993_SYSCLK_MCLK:
dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8993->mclk_rate);
reg = wm8993_read(codec, WM8993_CLOCKING_2);
reg &= ~(WM8993_MCLK_DIV | WM8993_SYSCLK_SRC);
if (wm8993->mclk_rate > 13500000) {
reg |= WM8993_MCLK_DIV;
wm8993->sysclk_rate = wm8993->mclk_rate / 2;
} else {
reg &= ~WM8993_MCLK_DIV;
wm8993->sysclk_rate = wm8993->mclk_rate;
}
wm8993_write(codec, WM8993_CLOCKING_2, reg);
break;
case WM8993_SYSCLK_FLL:
dev_dbg(codec->dev, "Using %dHz FLL clock\n",
wm8993->fll_fout);
reg = wm8993_read(codec, WM8993_CLOCKING_2);
reg |= WM8993_SYSCLK_SRC;
if (wm8993->fll_fout > 13500000) {
reg |= WM8993_MCLK_DIV;
wm8993->sysclk_rate = wm8993->fll_fout / 2;
} else {
reg &= ~WM8993_MCLK_DIV;
wm8993->sysclk_rate = wm8993->fll_fout;
}
wm8993_write(codec, WM8993_CLOCKING_2, reg);
break;
default:
dev_err(codec->dev, "System clock not configured\n");
return -EINVAL;
}
dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8993->sysclk_rate);
return 0;
}
static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
static const DECLARE_TLV_DB_SCALE(drc_comp_threash, -4500, 75, 0);
static const DECLARE_TLV_DB_SCALE(drc_comp_amp, -2250, 75, 0);
static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
static const unsigned int drc_max_tlv[] = {
TLV_DB_RANGE_HEAD(4),
0, 2, TLV_DB_SCALE_ITEM(1200, 600, 0),
3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
};
static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -1800, 300, 0);
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
static const char *dac_deemph_text[] = {
"None",
"32kHz",
"44.1kHz",
"48kHz",
};
static const struct soc_enum dac_deemph =
SOC_ENUM_SINGLE(WM8993_DAC_CTRL, 4, 4, dac_deemph_text);
static const char *adc_hpf_text[] = {
"Hi-Fi",
"Voice 1",
"Voice 2",
"Voice 3",
};
static const struct soc_enum adc_hpf =
SOC_ENUM_SINGLE(WM8993_ADC_CTRL, 5, 4, adc_hpf_text);
static const char *drc_path_text[] = {
"ADC",
"DAC"
};
static const struct soc_enum drc_path =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 14, 2, drc_path_text);
static const char *drc_r0_text[] = {
"1",
"1/2",
"1/4",
"1/8",
"1/16",
"0",
};
static const struct soc_enum drc_r0 =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 8, 6, drc_r0_text);
static const char *drc_r1_text[] = {
"1",
"1/2",
"1/4",
"1/8",
"0",
};
static const struct soc_enum drc_r1 =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_4, 13, 5, drc_r1_text);
static const char *drc_attack_text[] = {
"Reserved",
"181us",
"363us",
"726us",
"1.45ms",
"2.9ms",
"5.8ms",
"11.6ms",
"23.2ms",
"46.4ms",
"92.8ms",
"185.6ms",
};
static const struct soc_enum drc_attack =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 12, 12, drc_attack_text);
static const char *drc_decay_text[] = {
"186ms",
"372ms",
"743ms",
"1.49s",
"2.97ms",
"5.94ms",
"11.89ms",
"23.78ms",
"47.56ms",
};
static const struct soc_enum drc_decay =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 8, 9, drc_decay_text);
static const char *drc_ff_text[] = {
"5 samples",
"9 samples",
};
static const struct soc_enum drc_ff =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 7, 2, drc_ff_text);
static const char *drc_qr_rate_text[] = {
"0.725ms",
"1.45ms",
"5.8ms",
};
static const struct soc_enum drc_qr_rate =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 0, 3, drc_qr_rate_text);
static const char *drc_smooth_text[] = {
"Low",
"Medium",
"High",
};
static const struct soc_enum drc_smooth =
SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 4, 3, drc_smooth_text);
static const struct snd_kcontrol_new wm8993_snd_controls[] = {
SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8993_DIGITAL_SIDE_TONE,
5, 9, 12, 0, sidetone_tlv),
SOC_SINGLE("DRC Switch", WM8993_DRC_CONTROL_1, 15, 1, 0),
SOC_ENUM("DRC Path", drc_path),
SOC_SINGLE_TLV("DRC Compressor Threashold Volume", WM8993_DRC_CONTROL_2,
2, 60, 1, drc_comp_threash),
SOC_SINGLE_TLV("DRC Compressor Amplitude Volume", WM8993_DRC_CONTROL_3,
11, 30, 1, drc_comp_amp),
SOC_ENUM("DRC R0", drc_r0),
SOC_ENUM("DRC R1", drc_r1),
SOC_SINGLE_TLV("DRC Minimum Volume", WM8993_DRC_CONTROL_1, 2, 3, 1,
drc_min_tlv),
SOC_SINGLE_TLV("DRC Maximum Volume", WM8993_DRC_CONTROL_1, 0, 3, 0,
drc_max_tlv),
SOC_ENUM("DRC Attack Rate", drc_attack),
SOC_ENUM("DRC Decay Rate", drc_decay),
SOC_ENUM("DRC FF Delay", drc_ff),
SOC_SINGLE("DRC Anti-clip Switch", WM8993_DRC_CONTROL_1, 9, 1, 0),
SOC_SINGLE("DRC Quick Release Switch", WM8993_DRC_CONTROL_1, 10, 1, 0),
SOC_SINGLE_TLV("DRC Quick Release Volume", WM8993_DRC_CONTROL_3, 2, 3, 0,
drc_qr_tlv),
SOC_ENUM("DRC Quick Release Rate", drc_qr_rate),
SOC_SINGLE("DRC Smoothing Switch", WM8993_DRC_CONTROL_1, 11, 1, 0),
SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8993_DRC_CONTROL_1, 8, 1, 0),
SOC_ENUM("DRC Smoothing Hysteresis Threashold", drc_smooth),
SOC_SINGLE_TLV("DRC Startup Volume", WM8993_DRC_CONTROL_4, 8, 18, 0,
drc_startup_tlv),
SOC_SINGLE("EQ Switch", WM8993_EQ1, 0, 1, 0),
SOC_DOUBLE_R_TLV("Capture Volume", WM8993_LEFT_ADC_DIGITAL_VOLUME,
WM8993_RIGHT_ADC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
SOC_SINGLE("ADC High Pass Filter Switch", WM8993_ADC_CTRL, 8, 1, 0),
SOC_ENUM("ADC High Pass Filter Mode", adc_hpf),
SOC_DOUBLE_R_TLV("Playback Volume", WM8993_LEFT_DAC_DIGITAL_VOLUME,
WM8993_RIGHT_DAC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
SOC_SINGLE_TLV("Playback Boost Volume", WM8993_AUDIO_INTERFACE_2, 10, 3, 0,
dac_boost_tlv),
SOC_ENUM("DAC Deemphasis", dac_deemph),
SOC_SINGLE_TLV("SPKL DAC Volume", WM8993_SPKMIXL_ATTENUATION,
2, 1, 1, wm_hubs_spkmix_tlv),
SOC_SINGLE_TLV("SPKR DAC Volume", WM8993_SPKMIXR_ATTENUATION,
2, 1, 1, wm_hubs_spkmix_tlv),
};
static const struct snd_kcontrol_new wm8993_eq_controls[] = {
SOC_SINGLE_TLV("EQ1 Volume", WM8993_EQ2, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ2 Volume", WM8993_EQ3, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ3 Volume", WM8993_EQ4, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ4 Volume", WM8993_EQ5, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ5 Volume", WM8993_EQ6, 0, 24, 0, eq_tlv),
};
static int clk_sys_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
return configure_clock(codec);
case SND_SOC_DAPM_POST_PMD:
break;
}
return 0;
}
/*
* When used with DAC outputs only the WM8993 charge pump supports
* operation in class W mode, providing very low power consumption
* when used with digital sources. Enable and disable this mode
* automatically depending on the mixer configuration.
*
* Currently the only supported paths are the direct DAC->headphone
* paths (which provide minimum power consumption anyway).
*/
static int class_w_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
struct snd_soc_codec *codec = widget->codec;
struct wm8993_priv *wm8993 = codec->private_data;
int ret;
/* Turn it off if we're using the main output mixer */
if (ucontrol->value.integer.value[0] == 0) {
if (wm8993->class_w_users == 0) {
dev_dbg(codec->dev, "Disabling Class W\n");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V,
0);
}
wm8993->class_w_users++;
}
/* Implement the change */
ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
/* Enable it if we're using the direct DAC path */
if (ucontrol->value.integer.value[0] == 1) {
if (wm8993->class_w_users == 1) {
dev_dbg(codec->dev, "Enabling Class W\n");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V);
}
wm8993->class_w_users--;
}
dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
wm8993->class_w_users);
return ret;
}
#define SOC_DAPM_ENUM_W(xname, xenum) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_soc_info_enum_double, \
.get = snd_soc_dapm_get_enum_double, \
.put = class_w_put, \
.private_value = (unsigned long)&xenum }
static const char *hp_mux_text[] = {
"Mixer",
"DAC",
};
static const struct soc_enum hpl_enum =
SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
static const struct snd_kcontrol_new hpl_mux =
SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum);
static const struct soc_enum hpr_enum =
SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
static const struct snd_kcontrol_new hpr_mux =
SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum);
static const struct snd_kcontrol_new left_speaker_mixer[] = {
SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0),
SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0),
SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 3, 1, 0),
SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
};
static const struct snd_kcontrol_new right_speaker_mixer[] = {
SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
SOC_DAPM_SINGLE("IN1RP Switch", WM8993_SPEAKER_MIXER, 4, 1, 0),
SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 2, 1, 0),
SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 0, 1, 0),
};
static const struct snd_soc_dapm_widget wm8993_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8993_BUS_CONTROL_1, 1, 0, clk_sys_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("TOCLK", WM8993_CLOCKING_1, 14, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8993_CLOCKING_3, 0, 0, NULL, 0),
SND_SOC_DAPM_ADC("ADCL", "Capture", WM8993_POWER_MANAGEMENT_2, 1, 0),
SND_SOC_DAPM_ADC("ADCR", "Capture", WM8993_POWER_MANAGEMENT_2, 0, 0),
SND_SOC_DAPM_DAC("DACL", "Playback", WM8993_POWER_MANAGEMENT_3, 1, 0),
SND_SOC_DAPM_DAC("DACR", "Playback", WM8993_POWER_MANAGEMENT_3, 0, 0),
SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0,
left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
SND_SOC_DAPM_MIXER("SPKR", WM8993_POWER_MANAGEMENT_3, 9, 0,
right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
};
static const struct snd_soc_dapm_route routes[] = {
{ "ADCL", NULL, "CLK_SYS" },
{ "ADCL", NULL, "CLK_DSP" },
{ "ADCR", NULL, "CLK_SYS" },
{ "ADCR", NULL, "CLK_DSP" },
{ "DACL", NULL, "CLK_SYS" },
{ "DACL", NULL, "CLK_DSP" },
{ "DACR", NULL, "CLK_SYS" },
{ "DACR", NULL, "CLK_DSP" },
{ "Left Output Mixer", "DAC Switch", "DACL" },
{ "Right Output Mixer", "DAC Switch", "DACR" },
{ "Left Output PGA", NULL, "CLK_SYS" },
{ "Right Output PGA", NULL, "CLK_SYS" },
{ "SPKL", "DAC Switch", "DACL" },
{ "SPKL", NULL, "CLK_SYS" },
{ "SPKR", "DAC Switch", "DACR" },
{ "SPKR", NULL, "CLK_SYS" },
{ "Left Headphone Mux", "DAC", "DACL" },
{ "Right Headphone Mux", "DAC", "DACR" },
};
static int wm8993_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8993_priv *wm8993 = codec->private_data;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
/* VMID=2*40k */
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
WM8993_VMID_SEL_MASK, 0x2);
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
WM8993_TSHUT_ENA, WM8993_TSHUT_ENA);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
/* Bring up VMID with fast soft start */
snd_soc_update_bits(codec, WM8993_ANTIPOP2,
WM8993_STARTUP_BIAS_ENA |
WM8993_VMID_BUF_ENA |
WM8993_VMID_RAMP_MASK |
WM8993_BIAS_SRC,
WM8993_STARTUP_BIAS_ENA |
WM8993_VMID_BUF_ENA |
WM8993_VMID_RAMP_MASK |
WM8993_BIAS_SRC);
/* If either line output is single ended we
* need the VMID buffer */
if (!wm8993->pdata.lineout1_diff ||
!wm8993->pdata.lineout2_diff)
snd_soc_update_bits(codec, WM8993_ANTIPOP1,
WM8993_LINEOUT_VMID_BUF_ENA,
WM8993_LINEOUT_VMID_BUF_ENA);
/* VMID=2*40k */
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
WM8993_VMID_SEL_MASK |
WM8993_BIAS_ENA,
WM8993_BIAS_ENA | 0x2);
msleep(32);
/* Switch to normal bias */
snd_soc_update_bits(codec, WM8993_ANTIPOP2,
WM8993_BIAS_SRC |
WM8993_STARTUP_BIAS_ENA, 0);
}
/* VMID=2*240k */
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
WM8993_VMID_SEL_MASK, 0x4);
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
WM8993_TSHUT_ENA, 0);
break;
case SND_SOC_BIAS_OFF:
snd_soc_update_bits(codec, WM8993_ANTIPOP1,
WM8993_LINEOUT_VMID_BUF_ENA, 0);
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA,
0);
break;
}
codec->bias_level = level;
return 0;
}
static int wm8993_set_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct wm8993_priv *wm8993 = codec->private_data;
switch (clk_id) {
case WM8993_SYSCLK_MCLK:
wm8993->mclk_rate = freq;
case WM8993_SYSCLK_FLL:
wm8993->sysclk_source = clk_id;
break;
default:
return -EINVAL;
}
return 0;
}
static int wm8993_set_dai_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8993_priv *wm8993 = codec->private_data;
unsigned int aif1 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_1);
unsigned int aif4 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_4);
aif1 &= ~(WM8993_BCLK_DIR | WM8993_AIF_BCLK_INV |
WM8993_AIF_LRCLK_INV | WM8993_AIF_FMT_MASK);
aif4 &= ~WM8993_LRCLK_DIR;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
wm8993->master = 0;
break;
case SND_SOC_DAIFMT_CBS_CFM:
aif4 |= WM8993_LRCLK_DIR;
wm8993->master = 1;
break;
case SND_SOC_DAIFMT_CBM_CFS:
aif1 |= WM8993_BCLK_DIR;
wm8993->master = 1;
break;
case SND_SOC_DAIFMT_CBM_CFM:
aif1 |= WM8993_BCLK_DIR;
aif4 |= WM8993_LRCLK_DIR;
wm8993->master = 1;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_B:
aif1 |= WM8993_AIF_LRCLK_INV;
case SND_SOC_DAIFMT_DSP_A:
aif1 |= 0x18;
break;
case SND_SOC_DAIFMT_I2S:
aif1 |= 0x10;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
aif1 |= 0x8;
break;
default:
return -EINVAL;
}
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:
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8993_AIF_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:
break;
case SND_SOC_DAIFMT_IB_IF:
aif1 |= WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8993_AIF_BCLK_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
aif1 |= WM8993_AIF_LRCLK_INV;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
wm8993_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
wm8993_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
return 0;
}
static int wm8993_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;
struct wm8993_priv *wm8993 = codec->private_data;
int ret, i, best, best_val, cur_val;
unsigned int clocking1, clocking3, aif1, aif4;
clocking1 = wm8993_read(codec, WM8993_CLOCKING_1);
clocking1 &= ~WM8993_BCLK_DIV_MASK;
clocking3 = wm8993_read(codec, WM8993_CLOCKING_3);
clocking3 &= ~(WM8993_CLK_SYS_RATE_MASK | WM8993_SAMPLE_RATE_MASK);
aif1 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_1);
aif1 &= ~WM8993_AIF_WL_MASK;
aif4 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_4);
aif4 &= ~WM8993_LRCLK_RATE_MASK;
/* What BCLK do we need? */
wm8993->fs = params_rate(params);
wm8993->bclk = 2 * wm8993->fs;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
wm8993->bclk *= 16;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
wm8993->bclk *= 20;
aif1 |= 0x8;
break;
case SNDRV_PCM_FORMAT_S24_LE:
wm8993->bclk *= 24;
aif1 |= 0x10;
break;
case SNDRV_PCM_FORMAT_S32_LE:
wm8993->bclk *= 32;
aif1 |= 0x18;
break;
default:
return -EINVAL;
}
dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8993->bclk);
ret = configure_clock(codec);
if (ret != 0)
return ret;
/* Select nearest CLK_SYS_RATE */
best = 0;
best_val = abs((wm8993->sysclk_rate / clk_sys_rates[0].ratio)
- wm8993->fs);
for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
cur_val = abs((wm8993->sysclk_rate /
clk_sys_rates[i].ratio) - wm8993->fs);;
if (cur_val < best_val) {
best = i;
best_val = cur_val;
}
}
dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
clk_sys_rates[best].ratio);
clocking3 |= (clk_sys_rates[best].clk_sys_rate
<< WM8993_CLK_SYS_RATE_SHIFT);
/* SAMPLE_RATE */
best = 0;
best_val = abs(wm8993->fs - sample_rates[0].rate);
for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
/* Closest match */
cur_val = abs(wm8993->fs - sample_rates[i].rate);
if (cur_val < best_val) {
best = i;
best_val = cur_val;
}
}
dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
sample_rates[best].rate);
clocking3 |= (sample_rates[best].sample_rate
<< WM8993_SAMPLE_RATE_SHIFT);
/* BCLK_DIV */
best = 0;
best_val = INT_MAX;
for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
cur_val = ((wm8993->sysclk_rate * 10) / bclk_divs[i].div)
- wm8993->bclk;
if (cur_val < 0) /* Table is sorted */
break;
if (cur_val < best_val) {
best = i;
best_val = cur_val;
}
}
wm8993->bclk = (wm8993->sysclk_rate * 10) / bclk_divs[best].div;
dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
bclk_divs[best].div, wm8993->bclk);
clocking1 |= bclk_divs[best].bclk_div << WM8993_BCLK_DIV_SHIFT;
/* LRCLK is a simple fraction of BCLK */
dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8993->bclk / wm8993->fs);
aif4 |= wm8993->bclk / wm8993->fs;
wm8993_write(codec, WM8993_CLOCKING_1, clocking1);
wm8993_write(codec, WM8993_CLOCKING_3, clocking3);
wm8993_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
wm8993_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
/* ReTune Mobile? */
if (wm8993->pdata.num_retune_configs) {
u16 eq1 = wm8993_read(codec, WM8993_EQ1);
struct wm8993_retune_mobile_setting *s;
best = 0;
best_val = abs(wm8993->pdata.retune_configs[0].rate
- wm8993->fs);
for (i = 0; i < wm8993->pdata.num_retune_configs; i++) {
cur_val = abs(wm8993->pdata.retune_configs[i].rate
- wm8993->fs);
if (cur_val < best_val) {
best_val = cur_val;
best = i;
}
}
s = &wm8993->pdata.retune_configs[best];
dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
s->name, s->rate);
/* Disable EQ while we reconfigure */
snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, 0);
for (i = 1; i < ARRAY_SIZE(s->config); i++)
wm8993_write(codec, WM8993_EQ1 + i, s->config[i]);
snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, eq1);
}
return 0;
}
static int wm8993_digital_mute(struct snd_soc_dai *codec_dai, int mute)
{
struct snd_soc_codec *codec = codec_dai->codec;
unsigned int reg;
reg = wm8993_read(codec, WM8993_DAC_CTRL);
if (mute)
reg |= WM8993_DAC_MUTE;
else
reg &= ~WM8993_DAC_MUTE;
wm8993_write(codec, WM8993_DAC_CTRL, reg);
return 0;
}
static struct snd_soc_dai_ops wm8993_ops = {
.set_sysclk = wm8993_set_sysclk,
.set_fmt = wm8993_set_dai_fmt,
.hw_params = wm8993_hw_params,
.digital_mute = wm8993_digital_mute,
.set_pll = wm8993_set_fll,
};
#define WM8993_RATES SNDRV_PCM_RATE_8000_48000
#define WM8993_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
struct snd_soc_dai wm8993_dai = {
.name = "WM8993",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8993_RATES,
.formats = WM8993_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8993_RATES,
.formats = WM8993_FORMATS,
},
.ops = &wm8993_ops,
.symmetric_rates = 1,
};
EXPORT_SYMBOL_GPL(wm8993_dai);
static struct snd_soc_codec *wm8993_codec;
static int wm8993_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
struct wm8993_priv *wm8993;
int ret = 0;
if (!wm8993_codec) {
dev_err(&pdev->dev, "I2C device not yet probed\n");
goto err;
}
socdev->card->codec = wm8993_codec;
codec = wm8993_codec;
wm8993 = codec->private_data;
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
dev_err(codec->dev, "failed to create pcms\n");
goto err;
}
snd_soc_add_controls(codec, wm8993_snd_controls,
ARRAY_SIZE(wm8993_snd_controls));
if (wm8993->pdata.num_retune_configs != 0) {
dev_dbg(codec->dev, "Using ReTune Mobile\n");
} else {
dev_dbg(codec->dev, "No ReTune Mobile, using normal EQ\n");
snd_soc_add_controls(codec, wm8993_eq_controls,
ARRAY_SIZE(wm8993_eq_controls));
}
snd_soc_dapm_new_controls(codec, wm8993_dapm_widgets,
ARRAY_SIZE(wm8993_dapm_widgets));
wm_hubs_add_analogue_controls(codec);
snd_soc_dapm_add_routes(codec, routes, ARRAY_SIZE(routes));
wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff,
wm8993->pdata.lineout2_diff);
snd_soc_dapm_new_widgets(codec);
ret = snd_soc_init_card(socdev);
if (ret < 0) {
dev_err(codec->dev, "failed to register card\n");
goto card_err;
}
return ret;
card_err:
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
err:
return ret;
}
static int wm8993_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_wm8993 = {
.probe = wm8993_probe,
.remove = wm8993_remove,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8993);
static int wm8993_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8993_priv *wm8993;
struct snd_soc_codec *codec;
unsigned int val;
int ret;
if (wm8993_codec) {
dev_err(&i2c->dev, "A WM8993 is already registered\n");
return -EINVAL;
}
wm8993 = kzalloc(sizeof(struct wm8993_priv), GFP_KERNEL);
if (wm8993 == NULL)
return -ENOMEM;
codec = &wm8993->codec;
if (i2c->dev.platform_data)
memcpy(&wm8993->pdata, i2c->dev.platform_data,
sizeof(wm8993->pdata));
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
codec->name = "WM8993";
codec->read = wm8993_read;
codec->write = wm8993_write;
codec->hw_write = (hw_write_t)i2c_master_send;
codec->reg_cache = wm8993->reg_cache;
codec->reg_cache_size = ARRAY_SIZE(wm8993->reg_cache);
codec->bias_level = SND_SOC_BIAS_OFF;
codec->set_bias_level = wm8993_set_bias_level;
codec->dai = &wm8993_dai;
codec->num_dai = 1;
codec->private_data = wm8993;
memcpy(wm8993->reg_cache, wm8993_reg_defaults,
sizeof(wm8993->reg_cache));
i2c_set_clientdata(i2c, wm8993);
codec->control_data = i2c;
wm8993_codec = codec;
codec->dev = &i2c->dev;
val = wm8993_read_hw(codec, WM8993_SOFTWARE_RESET);
if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) {
dev_err(codec->dev, "Invalid ID register value %x\n", val);
ret = -EINVAL;
goto err;
}
ret = wm8993_write(codec, WM8993_SOFTWARE_RESET, 0xffff);
if (ret != 0)
goto err;
/* By default we're using the output mixers */
wm8993->class_w_users = 2;
/* Latch volume update bits and default ZC on */
snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME,
WM8993_DAC_VU, WM8993_DAC_VU);
snd_soc_update_bits(codec, WM8993_RIGHT_ADC_DIGITAL_VOLUME,
WM8993_ADC_VU, WM8993_ADC_VU);
/* Manualy manage the HPOUT sequencing for independent stereo
* control. */
snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
WM8993_HPOUT1_AUTO_PU, 0);
/* Use automatic clock configuration */
snd_soc_update_bits(codec, WM8993_CLOCKING_4, WM8993_SR_MODE, 0);
if (!wm8993->pdata.lineout1_diff)
snd_soc_update_bits(codec, WM8993_LINE_MIXER1,
WM8993_LINEOUT1_MODE,
WM8993_LINEOUT1_MODE);
if (!wm8993->pdata.lineout2_diff)
snd_soc_update_bits(codec, WM8993_LINE_MIXER2,
WM8993_LINEOUT2_MODE,
WM8993_LINEOUT2_MODE);
if (wm8993->pdata.lineout1fb)
snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL,
WM8993_LINEOUT1_FB, WM8993_LINEOUT1_FB);
if (wm8993->pdata.lineout2fb)
snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL,
WM8993_LINEOUT2_FB, WM8993_LINEOUT2_FB);
/* Apply the microphone bias/detection configuration - the
* platform data is directly applicable to the register. */
snd_soc_update_bits(codec, WM8993_MICBIAS,
WM8993_JD_SCTHR_MASK | WM8993_JD_THR_MASK |
WM8993_MICB1_LVL | WM8993_MICB2_LVL,
wm8993->pdata.jd_scthr << WM8993_JD_SCTHR_SHIFT |
wm8993->pdata.jd_thr << WM8993_JD_THR_SHIFT |
wm8993->pdata.micbias1_lvl |
wm8993->pdata.micbias1_lvl << 1);
ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
if (ret != 0)
goto err;
wm8993_dai.dev = codec->dev;
ret = snd_soc_register_dai(&wm8993_dai);
if (ret != 0)
goto err_bias;
ret = snd_soc_register_codec(codec);
return 0;
err_bias:
wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
err:
wm8993_codec = NULL;
kfree(wm8993);
return ret;
}
static int wm8993_i2c_remove(struct i2c_client *client)
{
struct wm8993_priv *wm8993 = i2c_get_clientdata(client);
snd_soc_unregister_codec(&wm8993->codec);
snd_soc_unregister_dai(&wm8993_dai);
wm8993_set_bias_level(&wm8993->codec, SND_SOC_BIAS_OFF);
kfree(wm8993);
return 0;
}
static const struct i2c_device_id wm8993_i2c_id[] = {
{ "wm8993", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8993_i2c_id);
static struct i2c_driver wm8993_i2c_driver = {
.driver = {
.name = "WM8993",
.owner = THIS_MODULE,
},
.probe = wm8993_i2c_probe,
.remove = wm8993_i2c_remove,
.id_table = wm8993_i2c_id,
};
static int __init wm8993_modinit(void)
{
int ret;
ret = i2c_add_driver(&wm8993_i2c_driver);
if (ret != 0)
pr_err("WM8993: Unable to register I2C driver: %d\n", ret);
return ret;
}
module_init(wm8993_modinit);
static void __exit wm8993_exit(void)
{
i2c_del_driver(&wm8993_i2c_driver);
}
module_exit(wm8993_exit);
MODULE_DESCRIPTION("ASoC WM8993 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
