/*
* wm8750.c -- WM8750 ALSA SoC audio driver
*
* Copyright 2005 Openedhand Ltd.
*
* Author: Richard Purdie <richard@openedhand.com>
*
* Based on WM8753.c
*
* 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/platform_device.h>
#include <linux/spi/spi.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include "wm8750.h"
/*
* wm8750 register cache
* We can't read the WM8750 register space when we
* are using 2 wire for device control, so we cache them instead.
*/
static const u16 wm8750_reg[] = {
0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
0x0079, 0x0079, 0x0079, /* 40 */
};
/* codec private data */
struct wm8750_priv {
unsigned int sysclk;
struct snd_soc_codec codec;
u16 reg_cache[ARRAY_SIZE(wm8750_reg)];
};
#define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0)
/*
* WM8750 Controls
*/
static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
static const char *wm8750_treble[] = {"8kHz", "4kHz"};
static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
static const char *wm8750_3d_func[] = {"Capture", "Playback"};
static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
static const char *wm8750_ng_type[] = {"Constant PGA Gain",
"Mute ADC Output"};
static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
"Differential"};
static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
"Differential"};
static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
"ROUT1"};
static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
"L + R Invert"};
static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
"Mono (Right)", "Digital Mono"};
static const struct soc_enum wm8750_enum[] = {
SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
};
static const struct snd_kcontrol_new wm8750_snd_controls[] = {
SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
WM8750_ROUT1V, 7, 1, 0),
SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
WM8750_ROUT2V, 7, 1, 0),
SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
SOC_ENUM("Capture Polarity", wm8750_enum[14]),
SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
SOC_ENUM("Bass Boost", wm8750_enum[0]),
SOC_ENUM("Bass Filter", wm8750_enum[1]),
SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
SOC_ENUM("3D Mode", wm8750_enum[5]),
SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
/* Unimplemented */
/* ADCDAC Bit 0 - ADCHPD */
/* ADCDAC Bit 4 - HPOR */
/* ADCTL1 Bit 2,3 - DATSEL */
/* ADCTL1 Bit 4,5 - DMONOMIX */
/* ADCTL1 Bit 6,7 - VSEL */
/* ADCTL2 Bit 2 - LRCM */
/* ADCTL2 Bit 3 - TRI */
/* ADCTL3 Bit 5 - HPFLREN */
/* ADCTL3 Bit 6 - VROI */
/* ADCTL3 Bit 7,8 - ADCLRM */
/* ADCIN Bit 4 - LDCM */
/* ADCIN Bit 5 - RDCM */
SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
WM8750_LOUTM2, 4, 7, 1),
SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
WM8750_ROUTM2, 4, 7, 1),
SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
WM8750_MOUTM2, 4, 7, 1),
SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
0, 127, 0),
SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
0, 127, 0),
SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
};
/*
* DAPM Controls
*/
/* Left Mixer */
static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
};
/* Right Mixer */
static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
};
/* Mono Mixer */
static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
};
/* Left Line Mux */
static const struct snd_kcontrol_new wm8750_left_line_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[8]);
/* Right Line Mux */
static const struct snd_kcontrol_new wm8750_right_line_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[9]);
/* Left PGA Mux */
static const struct snd_kcontrol_new wm8750_left_pga_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[10]);
/* Right PGA Mux */
static const struct snd_kcontrol_new wm8750_right_pga_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[11]);
/* Out 3 Mux */
static const struct snd_kcontrol_new wm8750_out3_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[12]);
/* Differential Mux */
static const struct snd_kcontrol_new wm8750_diffmux_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[13]);
/* Mono ADC Mux */
static const struct snd_kcontrol_new wm8750_monomux_controls =
SOC_DAPM_ENUM("Route", wm8750_enum[16]);
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
&wm8750_left_mixer_controls[0],
ARRAY_SIZE(wm8750_left_mixer_controls)),
SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
&wm8750_right_mixer_controls[0],
ARRAY_SIZE(wm8750_right_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
&wm8750_mono_mixer_controls[0],
ARRAY_SIZE(wm8750_mono_mixer_controls)),
SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
&wm8750_left_pga_controls),
SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
&wm8750_right_pga_controls),
SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
&wm8750_left_line_controls),
SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
&wm8750_right_line_controls),
SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
&wm8750_diffmux_controls),
SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
&wm8750_monomux_controls),
SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
&wm8750_monomux_controls),
SND_SOC_DAPM_OUTPUT("LOUT1"),
SND_SOC_DAPM_OUTPUT("ROUT1"),
SND_SOC_DAPM_OUTPUT("LOUT2"),
SND_SOC_DAPM_OUTPUT("ROUT2"),
SND_SOC_DAPM_OUTPUT("MONO1"),
SND_SOC_DAPM_OUTPUT("OUT3"),
SND_SOC_DAPM_OUTPUT("VREF"),
SND_SOC_DAPM_INPUT("LINPUT1"),
SND_SOC_DAPM_INPUT("LINPUT2"),
SND_SOC_DAPM_INPUT("LINPUT3"),
SND_SOC_DAPM_INPUT("RINPUT1"),
SND_SOC_DAPM_INPUT("RINPUT2"),
SND_SOC_DAPM_INPUT("RINPUT3"),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* left mixer */
{"Left Mixer", "Playback Switch", "Left DAC"},
{"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
{"Left Mixer", "Right Playback Switch", "Right DAC"},
{"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
/* right mixer */
{"Right Mixer", "Left Playback Switch", "Left DAC"},
{"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
{"Right Mixer", "Playback Switch", "Right DAC"},
{"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
/* left out 1 */
{"Left Out 1", NULL, "Left Mixer"},
{"LOUT1", NULL, "Left Out 1"},
/* left out 2 */
{"Left Out 2", NULL, "Left Mixer"},
{"LOUT2", NULL, "Left Out 2"},
/* right out 1 */
{"Right Out 1", NULL, "Right Mixer"},
{"ROUT1", NULL, "Right Out 1"},
/* right out 2 */
{"Right Out 2", NULL, "Right Mixer"},
{"ROUT2", NULL, "Right Out 2"},
/* mono mixer */
{"Mono Mixer", "Left Playback Switch", "Left DAC"},
{"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
{"Mono Mixer", "Right Playback Switch", "Right DAC"},
{"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
/* mono out */
{"Mono Out 1", NULL, "Mono Mixer"},
{"MONO1", NULL, "Mono Out 1"},
/* out 3 */
{"Out3 Mux", "VREF", "VREF"},
{"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
{"Out3 Mux", "ROUT1", "Right Mixer"},
{"Out3 Mux", "MonoOut", "MONO1"},
{"Out 3", NULL, "Out3 Mux"},
{"OUT3", NULL, "Out 3"},
/* Left Line Mux */
{"Left Line Mux", "Line 1", "LINPUT1"},
{"Left Line Mux", "Line 2", "LINPUT2"},
{"Left Line Mux", "Line 3", "LINPUT3"},
{"Left Line Mux", "PGA", "Left PGA Mux"},
{"Left Line Mux", "Differential", "Differential Mux"},
/* Right Line Mux */
{"Right Line Mux", "Line 1", "RINPUT1"},
{"Right Line Mux", "Line 2", "RINPUT2"},
{"Right Line Mux", "Line 3", "RINPUT3"},
{"Right Line Mux", "PGA", "Right PGA Mux"},
{"Right Line Mux", "Differential", "Differential Mux"},
/* Left PGA Mux */
{"Left PGA Mux", "Line 1", "LINPUT1"},
{"Left PGA Mux", "Line 2", "LINPUT2"},
{"Left PGA Mux", "Line 3", "LINPUT3"},
{"Left PGA Mux", "Differential", "Differential Mux"},
/* Right PGA Mux */
{"Right PGA Mux", "Line 1", "RINPUT1"},
{"Right PGA Mux", "Line 2", "RINPUT2"},
{"Right PGA Mux", "Line 3", "RINPUT3"},
{"Right PGA Mux", "Differential", "Differential Mux"},
/* Differential Mux */
{"Differential Mux", "Line 1", "LINPUT1"},
{"Differential Mux", "Line 1", "RINPUT1"},
{"Differential Mux", "Line 2", "LINPUT2"},
{"Differential Mux", "Line 2", "RINPUT2"},
/* Left ADC Mux */
{"Left ADC Mux", "Stereo", "Left PGA Mux"},
{"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
{"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
/* Right ADC Mux */
{"Right ADC Mux", "Stereo", "Right PGA Mux"},
{"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
{"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
/* ADC */
{"Left ADC", NULL, "Left ADC Mux"},
{"Right ADC", NULL, "Right ADC Mux"},
};
static int wm8750_add_widgets(struct snd_soc_codec *codec)
{
snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
ARRAY_SIZE(wm8750_dapm_widgets));
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
struct _coeff_div {
u32 mclk;
u32 rate;
u16 fs;
u8 sr:5;
u8 usb:1;
};
/* codec hifi mclk clock divider coefficients */
static const struct _coeff_div coeff_div[] = {
/* 8k */
{12288000, 8000, 1536, 0x6, 0x0},
{11289600, 8000, 1408, 0x16, 0x0},
{18432000, 8000, 2304, 0x7, 0x0},
{16934400, 8000, 2112, 0x17, 0x0},
{12000000, 8000, 1500, 0x6, 0x1},
/* 11.025k */
{11289600, 11025, 1024, 0x18, 0x0},
{16934400, 11025, 1536, 0x19, 0x0},
{12000000, 11025, 1088, 0x19, 0x1},
/* 16k */
{12288000, 16000, 768, 0xa, 0x0},
{18432000, 16000, 1152, 0xb, 0x0},
{12000000, 16000, 750, 0xa, 0x1},
/* 22.05k */
{11289600, 22050, 512, 0x1a, 0x0},
{16934400, 22050, 768, 0x1b, 0x0},
{12000000, 22050, 544, 0x1b, 0x1},
/* 32k */
{12288000, 32000, 384, 0xc, 0x0},
{18432000, 32000, 576, 0xd, 0x0},
{12000000, 32000, 375, 0xa, 0x1},
/* 44.1k */
{11289600, 44100, 256, 0x10, 0x0},
{16934400, 44100, 384, 0x11, 0x0},
{12000000, 44100, 272, 0x11, 0x1},
/* 48k */
{12288000, 48000, 256, 0x0, 0x0},
{18432000, 48000, 384, 0x1, 0x0},
{12000000, 48000, 250, 0x0, 0x1},
/* 88.2k */
{11289600, 88200, 128, 0x1e, 0x0},
{16934400, 88200, 192, 0x1f, 0x0},
{12000000, 88200, 136, 0x1f, 0x1},
/* 96k */
{12288000, 96000, 128, 0xe, 0x0},
{18432000, 96000, 192, 0xf, 0x0},
{12000000, 96000, 125, 0xe, 0x1},
};
static inline int get_coeff(int mclk, int rate)
{
int i;
for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
return i;
}
printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
mclk, rate);
return -EINVAL;
}
static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
switch (freq) {
case 11289600:
case 12000000:
case 12288000:
case 16934400:
case 18432000:
wm8750->sysclk = freq;
return 0;
}
return -EINVAL;
}
static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 iface = 0;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
iface = 0x0040;
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 |= 0x0002;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
iface |= 0x0001;
break;
case SND_SOC_DAIFMT_DSP_A:
iface |= 0x0003;
break;
case SND_SOC_DAIFMT_DSP_B:
iface |= 0x0013;
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 |= 0x0090;
break;
case SND_SOC_DAIFMT_IB_NF:
iface |= 0x0080;
break;
case SND_SOC_DAIFMT_NB_IF:
iface |= 0x0010;
break;
default:
return -EINVAL;
}
snd_soc_write(codec, WM8750_IFACE, iface);
return 0;
}
static int wm8750_pcm_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_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->codec;
struct wm8750_priv *wm8750 = snd_soc_codec_get_drvdata(codec);
u16 iface = snd_soc_read(codec, WM8750_IFACE) & 0x1f3;
u16 srate = snd_soc_read(codec, WM8750_SRATE) & 0x1c0;
int coeff = get_coeff(wm8750->sysclk, params_rate(params));
/* bit size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
iface |= 0x0004;
break;
case SNDRV_PCM_FORMAT_S24_LE:
iface |= 0x0008;
break;
case SNDRV_PCM_FORMAT_S32_LE:
iface |= 0x000c;
break;
}
/* set iface & srate */
snd_soc_write(codec, WM8750_IFACE, iface);
if (coeff >= 0)
snd_soc_write(codec, WM8750_SRATE, srate |
(coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
return 0;
}
static int wm8750_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u16 mute_reg = snd_soc_read(codec, WM8750_ADCDAC) & 0xfff7;
if (mute)
snd_soc_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
else
snd_soc_write(codec, WM8750_ADCDAC, mute_reg);
return 0;
}
static int wm8750_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 pwr_reg = snd_soc_read(codec, WM8750_PWR1) & 0xfe3e;
switch (level) {
case SND_SOC_BIAS_ON:
/* set vmid to 50k and unmute dac */
snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
/* Set VMID to 5k */
snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
/* ...and ramp */
msleep(1000);
}
/* mute dac and set vmid to 500k, enable VREF */
snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
break;
case SND_SOC_BIAS_OFF:
snd_soc_write(codec, WM8750_PWR1, 0x0001);
break;
}
codec->bias_level = level;
return 0;
}
#define WM8750_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 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
#define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_ops wm8750_dai_ops = {
.hw_params = wm8750_pcm_hw_params,
.digital_mute = wm8750_mute,
.set_fmt = wm8750_set_dai_fmt,
.set_sysclk = wm8750_set_dai_sysclk,
};
struct snd_soc_dai wm8750_dai = {
.name = "WM8750",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8750_RATES,
.formats = WM8750_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8750_RATES,
.formats = WM8750_FORMATS,},
.ops = &wm8750_dai_ops,
};
EXPORT_SYMBOL_GPL(wm8750_dai);
static int wm8750_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;
wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8750_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(wm8750_reg); i++) {
if (i == WM8750_RESET)
continue;
data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
data[1] = cache[i] & 0x00ff;
codec->hw_write(codec->control_data, data, 2);
}
wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
static struct snd_soc_codec *wm8750_codec;
static int wm8750_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
if (!wm8750_codec) {
dev_err(&pdev->dev, "WM8750 codec not yet registered\n");
return -EINVAL;
}
socdev->card->codec = wm8750_codec;
codec = wm8750_codec;
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "wm8750: failed to create pcms\n");
goto err;
}
snd_soc_add_controls(codec, wm8750_snd_controls,
ARRAY_SIZE(wm8750_snd_controls));
wm8750_add_widgets(codec);
return 0;
err:
return ret;
}
/* power down chip */
static int wm8750_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_wm8750 = {
.probe = wm8750_probe,
.remove = wm8750_remove,
.suspend = wm8750_suspend,
.resume = wm8750_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
/*
* initialise the WM8750 driver
* register the mixer and dsp interfaces with the kernel
*/
static int wm8750_register(struct wm8750_priv *wm8750,
enum snd_soc_control_type control)
{
struct snd_soc_codec *codec = &wm8750->codec;
int reg, ret = 0;
if (wm8750_codec) {
dev_err(codec->dev, "Multiple WM8750 devices not supported\n");
ret = -EINVAL;
goto err;
}
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
codec->name = "WM8750";
codec->owner = THIS_MODULE;
codec->bias_level = SND_SOC_BIAS_STANDBY;
codec->set_bias_level = wm8750_set_bias_level;
codec->dai = &wm8750_dai;
codec->num_dai = 1;
codec->reg_cache_size = ARRAY_SIZE(wm8750->reg_cache) + 1;
codec->reg_cache = &wm8750->reg_cache;
snd_soc_codec_set_drvdata(codec, wm8750);
memcpy(codec->reg_cache, wm8750_reg, sizeof(wm8750->reg_cache));
ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
if (ret < 0) {
printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
goto err;
}
ret = wm8750_reset(codec);
if (ret < 0) {
printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
goto err;
}
/* charge output caps */
wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* set the update bits */
reg = snd_soc_read(codec, WM8750_LDAC);
snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_RDAC);
snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_LOUT1V);
snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_ROUT1V);
snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_LOUT2V);
snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_ROUT2V);
snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_LINVOL);
snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
reg = snd_soc_read(codec, WM8750_RINVOL);
snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
wm8750_codec = codec;
ret = snd_soc_register_codec(codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
goto err;
}
ret = snd_soc_register_dais(&wm8750_dai, 1);
if (ret != 0) {
dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
goto err_codec;
}
return 0;
err_codec:
snd_soc_unregister_codec(codec);
err:
kfree(wm8750);
return ret;
}
static void wm8750_unregister(struct wm8750_priv *wm8750)
{
wm8750_set_bias_level(&wm8750->codec, SND_SOC_BIAS_OFF);
snd_soc_unregister_dais(&wm8750_dai, 1);
snd_soc_unregister_codec(&wm8750->codec);
kfree(wm8750);
wm8750_codec = NULL;
}
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
/*
* WM8750 2 wire address is determined by GPIO5
* state during powerup.
* low = 0x1a
* high = 0x1b
*/
static int wm8750_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct snd_soc_codec *codec;
struct wm8750_priv *wm8750;
wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
if (wm8750 == NULL)
return -ENOMEM;
codec = &wm8750->codec;
codec->control_data = i2c;
i2c_set_clientdata(i2c, wm8750);
codec->dev = &i2c->dev;
return wm8750_register(wm8750, SND_SOC_I2C);
}
static int wm8750_i2c_remove(struct i2c_client *client)
{
struct wm8750_priv *wm8750 = i2c_get_clientdata(client);
wm8750_unregister(wm8750);
return 0;
}
static const struct i2c_device_id wm8750_i2c_id[] = {
{ "wm8750", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
static struct i2c_driver wm8750_i2c_driver = {
.driver = {
.name = "WM8750 I2C Codec",
.owner = THIS_MODULE,
},
.probe = wm8750_i2c_probe,
.remove = wm8750_i2c_remove,
.id_table = wm8750_i2c_id,
};
#endif
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8750_spi_probe(struct spi_device *spi)
{
struct snd_soc_codec *codec;
struct wm8750_priv *wm8750;
wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
if (wm8750 == NULL)
return -ENOMEM;
codec = &wm8750->codec;
codec->control_data = spi;
codec->dev = &spi->dev;
dev_set_drvdata(&spi->dev, wm8750);
return wm8750_register(wm8750, SND_SOC_SPI);
}
static int __devexit wm8750_spi_remove(struct spi_device *spi)
{
struct wm8750_priv *wm8750 = dev_get_drvdata(&spi->dev);
wm8750_unregister(wm8750);
return 0;
}
static struct spi_driver wm8750_spi_driver = {
.driver = {
.name = "wm8750",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = wm8750_spi_probe,
.remove = __devexit_p(wm8750_spi_remove),
};
#endif
static int __init wm8750_modinit(void)
{
int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8750_i2c_driver);
if (ret != 0)
pr_err("Failed to register WM8750 I2C driver: %d\n", ret);
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8750_spi_driver);
if (ret != 0)
pr_err("Failed to register WM8750 SPI driver: %d\n", ret);
#endif
return 0;
}
module_init(wm8750_modinit);
static void __exit wm8750_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8750_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8750_spi_driver);
#endif
}
module_exit(wm8750_exit);
MODULE_DESCRIPTION("ASoC WM8750 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");
