/*
* wm8753.c -- WM8753 ALSA Soc Audio driver
*
* Copyright 2003 Wolfson Microelectronics PLC.
* Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Notes:
* The WM8753 is a low power, high quality stereo codec with integrated PCM
* codec designed for portable digital telephony applications.
*
* Dual DAI:-
*
* This driver support 2 DAI PCM's. This makes the default PCM available for
* HiFi audio (e.g. MP3, ogg) playback/capture and the other PCM available for
* voice.
*
* Please note that the voice PCM can be connected directly to a Bluetooth
* codec or GSM modem and thus cannot be read or written to, although it is
* available to be configured with snd_hw_params(), etc and kcontrols in the
* normal alsa manner.
*
* Fast DAI switching:-
*
* The driver can now fast switch between the DAI configurations via a
* an alsa kcontrol. This allows the PCM to remain open.
*
*/
#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/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/slab.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 <sound/tlv.h>
#include <asm/div64.h>
#include "wm8753.h"
static int caps_charge = 2000;
module_param(caps_charge, int, 0);
MODULE_PARM_DESC(caps_charge, "WM8753 cap charge time (msecs)");
static void wm8753_set_dai_mode(struct snd_soc_codec *codec,
unsigned int mode);
/*
* wm8753 register cache
* We can't read the WM8753 register space when we
* are using 2 wire for device control, so we cache them instead.
*/
static const u16 wm8753_reg[] = {
0x0008, 0x0000, 0x000a, 0x000a,
0x0033, 0x0000, 0x0007, 0x00ff,
0x00ff, 0x000f, 0x000f, 0x007b,
0x0000, 0x0032, 0x0000, 0x00c3,
0x00c3, 0x00c0, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0055,
0x0005, 0x0050, 0x0055, 0x0050,
0x0055, 0x0050, 0x0055, 0x0079,
0x0079, 0x0079, 0x0079, 0x0079,
0x0000, 0x0000, 0x0000, 0x0000,
0x0097, 0x0097, 0x0000, 0x0004,
0x0000, 0x0083, 0x0024, 0x01ba,
0x0000, 0x0083, 0x0024, 0x01ba,
0x0000, 0x0000, 0x0000
};
/* codec private data */
struct wm8753_priv {
unsigned int sysclk;
unsigned int pcmclk;
struct snd_soc_codec codec;
u16 reg_cache[ARRAY_SIZE(wm8753_reg)];
};
/*
* read wm8753 register cache
*/
static inline unsigned int wm8753_read_reg_cache(struct snd_soc_codec *codec,
unsigned int reg)
{
u16 *cache = codec->reg_cache;
if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
return -1;
return cache[reg - 1];
}
/*
* write wm8753 register cache
*/
static inline void wm8753_write_reg_cache(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
u16 *cache = codec->reg_cache;
if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
return;
cache[reg - 1] = value;
}
/*
* write to the WM8753 register space
*/
static int wm8753_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
u8 data[2];
/* data is
* D15..D9 WM8753 register offset
* D8...D0 register data
*/
data[0] = (reg << 1) | ((value >> 8) & 0x0001);
data[1] = value & 0x00ff;
wm8753_write_reg_cache(codec, reg, value);
if (codec->hw_write(codec->control_data, data, 2) == 2)
return 0;
else
return -EIO;
}
#define wm8753_reset(c) wm8753_write(c, WM8753_RESET, 0)
/*
* WM8753 Controls
*/
static const char *wm8753_base[] = {"Linear Control", "Adaptive Boost"};
static const char *wm8753_base_filter[] =
{"130Hz @ 48kHz", "200Hz @ 48kHz", "100Hz @ 16kHz", "400Hz @ 48kHz",
"100Hz @ 8kHz", "200Hz @ 8kHz"};
static const char *wm8753_treble[] = {"8kHz", "4kHz"};
static const char *wm8753_alc_func[] = {"Off", "Right", "Left", "Stereo"};
static const char *wm8753_ng_type[] = {"Constant PGA Gain", "Mute ADC Output"};
static const char *wm8753_3d_func[] = {"Capture", "Playback"};
static const char *wm8753_3d_uc[] = {"2.2kHz", "1.5kHz"};
static const char *wm8753_3d_lc[] = {"200Hz", "500Hz"};
static const char *wm8753_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz"};
static const char *wm8753_mono_mix[] = {"Stereo", "Left", "Right", "Mono"};
static const char *wm8753_dac_phase[] = {"Non Inverted", "Inverted"};
static const char *wm8753_line_mix[] = {"Line 1 + 2", "Line 1 - 2",
"Line 1", "Line 2"};
static const char *wm8753_mono_mux[] = {"Line Mix", "Rx Mix"};
static const char *wm8753_right_mux[] = {"Line 2", "Rx Mix"};
static const char *wm8753_left_mux[] = {"Line 1", "Rx Mix"};
static const char *wm8753_rxmsel[] = {"RXP - RXN", "RXP + RXN", "RXP", "RXN"};
static const char *wm8753_sidetone_mux[] = {"Left PGA", "Mic 1", "Mic 2",
"Right PGA"};
static const char *wm8753_mono2_src[] = {"Inverted Mono 1", "Left", "Right",
"Left + Right"};
static const char *wm8753_out3[] = {"VREF", "ROUT2", "Left + Right"};
static const char *wm8753_out4[] = {"VREF", "Capture ST", "LOUT2"};
static const char *wm8753_radcsel[] = {"PGA", "Line or RXP-RXN", "Sidetone"};
static const char *wm8753_ladcsel[] = {"PGA", "Line or RXP-RXN", "Line"};
static const char *wm8753_mono_adc[] = {"Stereo", "Analogue Mix Left",
"Analogue Mix Right", "Digital Mono Mix"};
static const char *wm8753_adc_hp[] = {"3.4Hz @ 48kHz", "82Hz @ 16k",
"82Hz @ 8kHz", "170Hz @ 8kHz"};
static const char *wm8753_adc_filter[] = {"HiFi", "Voice"};
static const char *wm8753_mic_sel[] = {"Mic 1", "Mic 2", "Mic 3"};
static const char *wm8753_dai_mode[] = {"DAI 0", "DAI 1", "DAI 2", "DAI 3"};
static const char *wm8753_dat_sel[] = {"Stereo", "Left ADC", "Right ADC",
"Channel Swap"};
static const char *wm8753_rout2_phase[] = {"Non Inverted", "Inverted"};
static const struct soc_enum wm8753_enum[] = {
SOC_ENUM_SINGLE(WM8753_BASS, 7, 2, wm8753_base),
SOC_ENUM_SINGLE(WM8753_BASS, 4, 6, wm8753_base_filter),
SOC_ENUM_SINGLE(WM8753_TREBLE, 6, 2, wm8753_treble),
SOC_ENUM_SINGLE(WM8753_ALC1, 7, 4, wm8753_alc_func),
SOC_ENUM_SINGLE(WM8753_NGATE, 1, 2, wm8753_ng_type),
SOC_ENUM_SINGLE(WM8753_3D, 7, 2, wm8753_3d_func),
SOC_ENUM_SINGLE(WM8753_3D, 6, 2, wm8753_3d_uc),
SOC_ENUM_SINGLE(WM8753_3D, 5, 2, wm8753_3d_lc),
SOC_ENUM_SINGLE(WM8753_DAC, 1, 4, wm8753_deemp),
SOC_ENUM_SINGLE(WM8753_DAC, 4, 4, wm8753_mono_mix),
SOC_ENUM_SINGLE(WM8753_DAC, 6, 2, wm8753_dac_phase),
SOC_ENUM_SINGLE(WM8753_INCTL1, 3, 4, wm8753_line_mix),
SOC_ENUM_SINGLE(WM8753_INCTL1, 2, 2, wm8753_mono_mux),
SOC_ENUM_SINGLE(WM8753_INCTL1, 1, 2, wm8753_right_mux),
SOC_ENUM_SINGLE(WM8753_INCTL1, 0, 2, wm8753_left_mux),
SOC_ENUM_SINGLE(WM8753_INCTL2, 6, 4, wm8753_rxmsel),
SOC_ENUM_SINGLE(WM8753_INCTL2, 4, 4, wm8753_sidetone_mux),
SOC_ENUM_SINGLE(WM8753_OUTCTL, 7, 4, wm8753_mono2_src),
SOC_ENUM_SINGLE(WM8753_OUTCTL, 0, 3, wm8753_out3),
SOC_ENUM_SINGLE(WM8753_ADCTL2, 7, 3, wm8753_out4),
SOC_ENUM_SINGLE(WM8753_ADCIN, 2, 3, wm8753_radcsel),
SOC_ENUM_SINGLE(WM8753_ADCIN, 0, 3, wm8753_ladcsel),
SOC_ENUM_SINGLE(WM8753_ADCIN, 4, 4, wm8753_mono_adc),
SOC_ENUM_SINGLE(WM8753_ADC, 2, 4, wm8753_adc_hp),
SOC_ENUM_SINGLE(WM8753_ADC, 4, 2, wm8753_adc_filter),
SOC_ENUM_SINGLE(WM8753_MICBIAS, 6, 3, wm8753_mic_sel),
SOC_ENUM_SINGLE(WM8753_IOCTL, 2, 4, wm8753_dai_mode),
SOC_ENUM_SINGLE(WM8753_ADC, 7, 4, wm8753_dat_sel),
SOC_ENUM_SINGLE(WM8753_OUTCTL, 2, 2, wm8753_rout2_phase),
};
static int wm8753_get_dai(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
int mode = wm8753_read_reg_cache(codec, WM8753_IOCTL);
ucontrol->value.integer.value[0] = (mode & 0xc) >> 2;
return 0;
}
static int wm8753_set_dai(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
int mode = wm8753_read_reg_cache(codec, WM8753_IOCTL);
if (((mode & 0xc) >> 2) == ucontrol->value.integer.value[0])
return 0;
mode &= 0xfff3;
mode |= (ucontrol->value.integer.value[0] << 2);
wm8753_write(codec, WM8753_IOCTL, mode);
wm8753_set_dai_mode(codec, ucontrol->value.integer.value[0]);
return 1;
}
static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(mic_preamp_tlv, 1200, 600, 0);
static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
static const unsigned int out_tlv[] = {
TLV_DB_RANGE_HEAD(2),
/* 0000000 - 0101111 = "Analogue mute" */
0, 48, TLV_DB_SCALE_ITEM(-25500, 0, 0),
48, 127, TLV_DB_SCALE_ITEM(-7300, 100, 0),
};
static const DECLARE_TLV_DB_SCALE(mix_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(voice_mix_tlv, -1200, 300, 0);
static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
static const struct snd_kcontrol_new wm8753_snd_controls[] = {
SOC_DOUBLE_R_TLV("PCM Volume", WM8753_LDAC, WM8753_RDAC, 0, 255, 0, dac_tlv),
SOC_DOUBLE_R_TLV("ADC Capture Volume", WM8753_LADC, WM8753_RADC, 0, 255, 0,
adc_tlv),
SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8753_LOUT1V, WM8753_ROUT1V,
0, 127, 0, out_tlv),
SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8753_LOUT2V, WM8753_ROUT2V, 0,
127, 0, out_tlv),
SOC_SINGLE_TLV("Mono Playback Volume", WM8753_MOUTV, 0, 127, 0, out_tlv),
SOC_DOUBLE_R_TLV("Bypass Playback Volume", WM8753_LOUTM1, WM8753_ROUTM1, 4, 7,
1, mix_tlv),
SOC_DOUBLE_R_TLV("Sidetone Playback Volume", WM8753_LOUTM2, WM8753_ROUTM2, 4,
7, 1, mix_tlv),
SOC_DOUBLE_R_TLV("Voice Playback Volume", WM8753_LOUTM2, WM8753_ROUTM2, 0, 7,
1, voice_mix_tlv),
SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8753_LOUT1V, WM8753_ROUT1V, 7,
1, 0),
SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8753_LOUT2V, WM8753_ROUT2V, 7,
1, 0),
SOC_SINGLE_TLV("Mono Bypass Playback Volume", WM8753_MOUTM1, 4, 7, 1, mix_tlv),
SOC_SINGLE_TLV("Mono Sidetone Playback Volume", WM8753_MOUTM2, 4, 7, 1,
mix_tlv),
SOC_SINGLE_TLV("Mono Voice Playback Volume", WM8753_MOUTM2, 0, 7, 1,
voice_mix_tlv),
SOC_SINGLE("Mono Playback ZC Switch", WM8753_MOUTV, 7, 1, 0),
SOC_ENUM("Bass Boost", wm8753_enum[0]),
SOC_ENUM("Bass Filter", wm8753_enum[1]),
SOC_SINGLE("Bass Volume", WM8753_BASS, 0, 15, 1),
SOC_SINGLE("Treble Volume", WM8753_TREBLE, 0, 15, 1),
SOC_ENUM("Treble Cut-off", wm8753_enum[2]),
SOC_DOUBLE_TLV("Sidetone Capture Volume", WM8753_RECMIX1, 0, 4, 7, 1,
rec_mix_tlv),
SOC_SINGLE_TLV("Voice Sidetone Capture Volume", WM8753_RECMIX2, 0, 7, 1,
rec_mix_tlv),
SOC_DOUBLE_R_TLV("Capture Volume", WM8753_LINVOL, WM8753_RINVOL, 0, 63, 0,
pga_tlv),
SOC_DOUBLE_R("Capture ZC Switch", WM8753_LINVOL, WM8753_RINVOL, 6, 1, 0),
SOC_DOUBLE_R("Capture Switch", WM8753_LINVOL, WM8753_RINVOL, 7, 1, 1),
SOC_ENUM("Capture Filter Select", wm8753_enum[23]),
SOC_ENUM("Capture Filter Cut-off", wm8753_enum[24]),
SOC_SINGLE("Capture Filter Switch", WM8753_ADC, 0, 1, 1),
SOC_SINGLE("ALC Capture Target Volume", WM8753_ALC1, 0, 7, 0),
SOC_SINGLE("ALC Capture Max Volume", WM8753_ALC1, 4, 7, 0),
SOC_ENUM("ALC Capture Function", wm8753_enum[3]),
SOC_SINGLE("ALC Capture ZC Switch", WM8753_ALC2, 8, 1, 0),
SOC_SINGLE("ALC Capture Hold Time", WM8753_ALC2, 0, 15, 1),
SOC_SINGLE("ALC Capture Decay Time", WM8753_ALC3, 4, 15, 1),
SOC_SINGLE("ALC Capture Attack Time", WM8753_ALC3, 0, 15, 0),
SOC_SINGLE("ALC Capture NG Threshold", WM8753_NGATE, 3, 31, 0),
SOC_ENUM("ALC Capture NG Type", wm8753_enum[4]),
SOC_SINGLE("ALC Capture NG Switch", WM8753_NGATE, 0, 1, 0),
SOC_ENUM("3D Function", wm8753_enum[5]),
SOC_ENUM("3D Upper Cut-off", wm8753_enum[6]),
SOC_ENUM("3D Lower Cut-off", wm8753_enum[7]),
SOC_SINGLE("3D Volume", WM8753_3D, 1, 15, 0),
SOC_SINGLE("3D Switch", WM8753_3D, 0, 1, 0),
SOC_SINGLE("Capture 6dB Attenuate", WM8753_ADCTL1, 2, 1, 0),
SOC_SINGLE("Playback 6dB Attenuate", WM8753_ADCTL1, 1, 1, 0),
SOC_ENUM("De-emphasis", wm8753_enum[8]),
SOC_ENUM("Playback Mono Mix", wm8753_enum[9]),
SOC_ENUM("Playback Phase", wm8753_enum[10]),
SOC_SINGLE_TLV("Mic2 Capture Volume", WM8753_INCTL1, 7, 3, 0, mic_preamp_tlv),
SOC_SINGLE_TLV("Mic1 Capture Volume", WM8753_INCTL1, 5, 3, 0, mic_preamp_tlv),
SOC_ENUM_EXT("DAI Mode", wm8753_enum[26], wm8753_get_dai, wm8753_set_dai),
SOC_ENUM("ADC Data Select", wm8753_enum[27]),
SOC_ENUM("ROUT2 Phase", wm8753_enum[28]),
};
/*
* _DAPM_ Controls
*/
/* Left Mixer */
static const struct snd_kcontrol_new wm8753_left_mixer_controls[] = {
SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_LOUTM2, 8, 1, 0),
SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_LOUTM2, 7, 1, 0),
SOC_DAPM_SINGLE("Left Playback Switch", WM8753_LOUTM1, 8, 1, 0),
SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_LOUTM1, 7, 1, 0),
};
/* Right mixer */
static const struct snd_kcontrol_new wm8753_right_mixer_controls[] = {
SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_ROUTM2, 8, 1, 0),
SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_ROUTM2, 7, 1, 0),
SOC_DAPM_SINGLE("Right Playback Switch", WM8753_ROUTM1, 8, 1, 0),
SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_ROUTM1, 7, 1, 0),
};
/* Mono mixer */
static const struct snd_kcontrol_new wm8753_mono_mixer_controls[] = {
SOC_DAPM_SINGLE("Left Playback Switch", WM8753_MOUTM1, 8, 1, 0),
SOC_DAPM_SINGLE("Right Playback Switch", WM8753_MOUTM2, 8, 1, 0),
SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_MOUTM2, 3, 1, 0),
SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_MOUTM2, 7, 1, 0),
SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_MOUTM1, 7, 1, 0),
};
/* Mono 2 Mux */
static const struct snd_kcontrol_new wm8753_mono2_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[17]);
/* Out 3 Mux */
static const struct snd_kcontrol_new wm8753_out3_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[18]);
/* Out 4 Mux */
static const struct snd_kcontrol_new wm8753_out4_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[19]);
/* ADC Mono Mix */
static const struct snd_kcontrol_new wm8753_adc_mono_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[22]);
/* Record mixer */
static const struct snd_kcontrol_new wm8753_record_mixer_controls[] = {
SOC_DAPM_SINGLE("Voice Capture Switch", WM8753_RECMIX2, 3, 1, 0),
SOC_DAPM_SINGLE("Left Capture Switch", WM8753_RECMIX1, 3, 1, 0),
SOC_DAPM_SINGLE("Right Capture Switch", WM8753_RECMIX1, 7, 1, 0),
};
/* Left ADC mux */
static const struct snd_kcontrol_new wm8753_adc_left_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[21]);
/* Right ADC mux */
static const struct snd_kcontrol_new wm8753_adc_right_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[20]);
/* MIC mux */
static const struct snd_kcontrol_new wm8753_mic_mux_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[16]);
/* ALC mixer */
static const struct snd_kcontrol_new wm8753_alc_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Capture Switch", WM8753_INCTL2, 3, 1, 0),
SOC_DAPM_SINGLE("Mic2 Capture Switch", WM8753_INCTL2, 2, 1, 0),
SOC_DAPM_SINGLE("Mic1 Capture Switch", WM8753_INCTL2, 1, 1, 0),
SOC_DAPM_SINGLE("Rx Capture Switch", WM8753_INCTL2, 0, 1, 0),
};
/* Left Line mux */
static const struct snd_kcontrol_new wm8753_line_left_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[14]);
/* Right Line mux */
static const struct snd_kcontrol_new wm8753_line_right_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[13]);
/* Mono Line mux */
static const struct snd_kcontrol_new wm8753_line_mono_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[12]);
/* Line mux and mixer */
static const struct snd_kcontrol_new wm8753_line_mux_mix_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[11]);
/* Rx mux and mixer */
static const struct snd_kcontrol_new wm8753_rx_mux_mix_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[15]);
/* Mic Selector Mux */
static const struct snd_kcontrol_new wm8753_mic_sel_mux_controls =
SOC_DAPM_ENUM("Route", wm8753_enum[25]);
static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
SND_SOC_DAPM_MICBIAS("Mic Bias", WM8753_PWR1, 5, 0),
SND_SOC_DAPM_MIXER("Left Mixer", WM8753_PWR4, 0, 0,
&wm8753_left_mixer_controls[0], ARRAY_SIZE(wm8753_left_mixer_controls)),
SND_SOC_DAPM_PGA("Left Out 1", WM8753_PWR3, 8, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Out 2", WM8753_PWR3, 6, 0, NULL, 0),
SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", WM8753_PWR1, 3, 0),
SND_SOC_DAPM_OUTPUT("LOUT1"),
SND_SOC_DAPM_OUTPUT("LOUT2"),
SND_SOC_DAPM_MIXER("Right Mixer", WM8753_PWR4, 1, 0,
&wm8753_right_mixer_controls[0], ARRAY_SIZE(wm8753_right_mixer_controls)),
SND_SOC_DAPM_PGA("Right Out 1", WM8753_PWR3, 7, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Out 2", WM8753_PWR3, 5, 0, NULL, 0),
SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", WM8753_PWR1, 2, 0),
SND_SOC_DAPM_OUTPUT("ROUT1"),
SND_SOC_DAPM_OUTPUT("ROUT2"),
SND_SOC_DAPM_MIXER("Mono Mixer", WM8753_PWR4, 2, 0,
&wm8753_mono_mixer_controls[0], ARRAY_SIZE(wm8753_mono_mixer_controls)),
SND_SOC_DAPM_PGA("Mono Out 1", WM8753_PWR3, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono Out 2", WM8753_PWR3, 1, 0, NULL, 0),
SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", WM8753_PWR1, 4, 0),
SND_SOC_DAPM_OUTPUT("MONO1"),
SND_SOC_DAPM_MUX("Mono 2 Mux", SND_SOC_NOPM, 0, 0, &wm8753_mono2_controls),
SND_SOC_DAPM_OUTPUT("MONO2"),
SND_SOC_DAPM_MIXER("Out3 Left + Right", -1, 0, 0, NULL, 0),
SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8753_out3_controls),
SND_SOC_DAPM_PGA("Out 3", WM8753_PWR3, 4, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("OUT3"),
SND_SOC_DAPM_MUX("Out4 Mux", SND_SOC_NOPM, 0, 0, &wm8753_out4_controls),
SND_SOC_DAPM_PGA("Out 4", WM8753_PWR3, 3, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("OUT4"),
SND_SOC_DAPM_MIXER("Playback Mixer", WM8753_PWR4, 3, 0,
&wm8753_record_mixer_controls[0],
ARRAY_SIZE(wm8753_record_mixer_controls)),
SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8753_PWR2, 3, 0),
SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8753_PWR2, 2, 0),
SND_SOC_DAPM_MUX("Capture Left Mixer", SND_SOC_NOPM, 0, 0,
&wm8753_adc_mono_controls),
SND_SOC_DAPM_MUX("Capture Right Mixer", SND_SOC_NOPM, 0, 0,
&wm8753_adc_mono_controls),
SND_SOC_DAPM_MUX("Capture Left Mux", SND_SOC_NOPM, 0, 0,
&wm8753_adc_left_controls),
SND_SOC_DAPM_MUX("Capture Right Mux", SND_SOC_NOPM, 0, 0,
&wm8753_adc_right_controls),
SND_SOC_DAPM_MUX("Mic Sidetone Mux", SND_SOC_NOPM, 0, 0,
&wm8753_mic_mux_controls),
SND_SOC_DAPM_PGA("Left Capture Volume", WM8753_PWR2, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Capture Volume", WM8753_PWR2, 4, 0, NULL, 0),
SND_SOC_DAPM_MIXER("ALC Mixer", WM8753_PWR2, 6, 0,
&wm8753_alc_mixer_controls[0], ARRAY_SIZE(wm8753_alc_mixer_controls)),
SND_SOC_DAPM_MUX("Line Left Mux", SND_SOC_NOPM, 0, 0,
&wm8753_line_left_controls),
SND_SOC_DAPM_MUX("Line Right Mux", SND_SOC_NOPM, 0, 0,
&wm8753_line_right_controls),
SND_SOC_DAPM_MUX("Line Mono Mux", SND_SOC_NOPM, 0, 0,
&wm8753_line_mono_controls),
SND_SOC_DAPM_MUX("Line Mixer", WM8753_PWR2, 0, 0,
&wm8753_line_mux_mix_controls),
SND_SOC_DAPM_MUX("Rx Mixer", WM8753_PWR2, 1, 0,
&wm8753_rx_mux_mix_controls),
SND_SOC_DAPM_PGA("Mic 1 Volume", WM8753_PWR2, 8, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mic 2 Volume", WM8753_PWR2, 7, 0, NULL, 0),
SND_SOC_DAPM_MUX("Mic Selection Mux", SND_SOC_NOPM, 0, 0,
&wm8753_mic_sel_mux_controls),
SND_SOC_DAPM_INPUT("LINE1"),
SND_SOC_DAPM_INPUT("LINE2"),
SND_SOC_DAPM_INPUT("RXP"),
SND_SOC_DAPM_INPUT("RXN"),
SND_SOC_DAPM_INPUT("ACIN"),
SND_SOC_DAPM_OUTPUT("ACOP"),
SND_SOC_DAPM_INPUT("MIC1N"),
SND_SOC_DAPM_INPUT("MIC1"),
SND_SOC_DAPM_INPUT("MIC2N"),
SND_SOC_DAPM_INPUT("MIC2"),
SND_SOC_DAPM_VMID("VREF"),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* left mixer */
{"Left Mixer", "Left Playback Switch", "Left DAC"},
{"Left Mixer", "Voice Playback Switch", "Voice DAC"},
{"Left Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
{"Left Mixer", "Bypass Playback Switch", "Line Left Mux"},
/* right mixer */
{"Right Mixer", "Right Playback Switch", "Right DAC"},
{"Right Mixer", "Voice Playback Switch", "Voice DAC"},
{"Right Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
{"Right Mixer", "Bypass Playback Switch", "Line Right Mux"},
/* mono mixer */
{"Mono Mixer", "Voice Playback Switch", "Voice DAC"},
{"Mono Mixer", "Left Playback Switch", "Left DAC"},
{"Mono Mixer", "Right Playback Switch", "Right DAC"},
{"Mono Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
{"Mono Mixer", "Bypass Playback Switch", "Line Mono Mux"},
/* left out */
{"Left Out 1", NULL, "Left Mixer"},
{"Left Out 2", NULL, "Left Mixer"},
{"LOUT1", NULL, "Left Out 1"},
{"LOUT2", NULL, "Left Out 2"},
/* right out */
{"Right Out 1", NULL, "Right Mixer"},
{"Right Out 2", NULL, "Right Mixer"},
{"ROUT1", NULL, "Right Out 1"},
{"ROUT2", NULL, "Right Out 2"},
/* mono 1 out */
{"Mono Out 1", NULL, "Mono Mixer"},
{"MONO1", NULL, "Mono Out 1"},
/* mono 2 out */
{"Mono 2 Mux", "Left + Right", "Out3 Left + Right"},
{"Mono 2 Mux", "Inverted Mono 1", "MONO1"},
{"Mono 2 Mux", "Left", "Left Mixer"},
{"Mono 2 Mux", "Right", "Right Mixer"},
{"Mono Out 2", NULL, "Mono 2 Mux"},
{"MONO2", NULL, "Mono Out 2"},
/* out 3 */
{"Out3 Left + Right", NULL, "Left Mixer"},
{"Out3 Left + Right", NULL, "Right Mixer"},
{"Out3 Mux", "VREF", "VREF"},
{"Out3 Mux", "Left + Right", "Out3 Left + Right"},
{"Out3 Mux", "ROUT2", "ROUT2"},
{"Out 3", NULL, "Out3 Mux"},
{"OUT3", NULL, "Out 3"},
/* out 4 */
{"Out4 Mux", "VREF", "VREF"},
{"Out4 Mux", "Capture ST", "Playback Mixer"},
{"Out4 Mux", "LOUT2", "LOUT2"},
{"Out 4", NULL, "Out4 Mux"},
{"OUT4", NULL, "Out 4"},
/* record mixer */
{"Playback Mixer", "Left Capture Switch", "Left Mixer"},
{"Playback Mixer", "Voice Capture Switch", "Mono Mixer"},
{"Playback Mixer", "Right Capture Switch", "Right Mixer"},
/* Mic/SideTone Mux */
{"Mic Sidetone Mux", "Left PGA", "Left Capture Volume"},
{"Mic Sidetone Mux", "Right PGA", "Right Capture Volume"},
{"Mic Sidetone Mux", "Mic 1", "Mic 1 Volume"},
{"Mic Sidetone Mux", "Mic 2", "Mic 2 Volume"},
/* Capture Left Mux */
{"Capture Left Mux", "PGA", "Left Capture Volume"},
{"Capture Left Mux", "Line or RXP-RXN", "Line Left Mux"},
{"Capture Left Mux", "Line", "LINE1"},
/* Capture Right Mux */
{"Capture Right Mux", "PGA", "Right Capture Volume"},
{"Capture Right Mux", "Line or RXP-RXN", "Line Right Mux"},
{"Capture Right Mux", "Sidetone", "Playback Mixer"},
/* Mono Capture mixer-mux */
{"Capture Right Mixer", "Stereo", "Capture Right Mux"},
{"Capture Left Mixer", "Stereo", "Capture Left Mux"},
{"Capture Left Mixer", "Analogue Mix Left", "Capture Left Mux"},
{"Capture Left Mixer", "Analogue Mix Left", "Capture Right Mux"},
{"Capture Right Mixer", "Analogue Mix Right", "Capture Left Mux"},
{"Capture Right Mixer", "Analogue Mix Right", "Capture Right Mux"},
{"Capture Left Mixer", "Digital Mono Mix", "Capture Left Mux"},
{"Capture Left Mixer", "Digital Mono Mix", "Capture Right Mux"},
{"Capture Right Mixer", "Digital Mono Mix", "Capture Left Mux"},
{"Capture Right Mixer", "Digital Mono Mix", "Capture Right Mux"},
/* ADC */
{"Left ADC", NULL, "Capture Left Mixer"},
{"Right ADC", NULL, "Capture Right Mixer"},
/* Left Capture Volume */
{"Left Capture Volume", NULL, "ACIN"},
/* Right Capture Volume */
{"Right Capture Volume", NULL, "Mic 2 Volume"},
/* ALC Mixer */
{"ALC Mixer", "Line Capture Switch", "Line Mixer"},
{"ALC Mixer", "Mic2 Capture Switch", "Mic 2 Volume"},
{"ALC Mixer", "Mic1 Capture Switch", "Mic 1 Volume"},
{"ALC Mixer", "Rx Capture Switch", "Rx Mixer"},
/* Line Left Mux */
{"Line Left Mux", "Line 1", "LINE1"},
{"Line Left Mux", "Rx Mix", "Rx Mixer"},
/* Line Right Mux */
{"Line Right Mux", "Line 2", "LINE2"},
{"Line Right Mux", "Rx Mix", "Rx Mixer"},
/* Line Mono Mux */
{"Line Mono Mux", "Line Mix", "Line Mixer"},
{"Line Mono Mux", "Rx Mix", "Rx Mixer"},
/* Line Mixer/Mux */
{"Line Mixer", "Line 1 + 2", "LINE1"},
{"Line Mixer", "Line 1 - 2", "LINE1"},
{"Line Mixer", "Line 1 + 2", "LINE2"},
{"Line Mixer", "Line 1 - 2", "LINE2"},
{"Line Mixer", "Line 1", "LINE1"},
{"Line Mixer", "Line 2", "LINE2"},
/* Rx Mixer/Mux */
{"Rx Mixer", "RXP - RXN", "RXP"},
{"Rx Mixer", "RXP + RXN", "RXP"},
{"Rx Mixer", "RXP - RXN", "RXN"},
{"Rx Mixer", "RXP + RXN", "RXN"},
{"Rx Mixer", "RXP", "RXP"},
{"Rx Mixer", "RXN", "RXN"},
/* Mic 1 Volume */
{"Mic 1 Volume", NULL, "MIC1N"},
{"Mic 1 Volume", NULL, "Mic Selection Mux"},
/* Mic 2 Volume */
{"Mic 2 Volume", NULL, "MIC2N"},
{"Mic 2 Volume", NULL, "MIC2"},
/* Mic Selector Mux */
{"Mic Selection Mux", "Mic 1", "MIC1"},
{"Mic Selection Mux", "Mic 2", "MIC2N"},
{"Mic Selection Mux", "Mic 3", "MIC2"},
/* ACOP */
{"ACOP", NULL, "ALC Mixer"},
};
static int wm8753_add_widgets(struct snd_soc_codec *codec)
{
snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
ARRAY_SIZE(wm8753_dapm_widgets));
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
/* PLL divisors */
struct _pll_div {
u32 div2:1;
u32 n:4;
u32 k:24;
};
/* The size in bits of the pll divide multiplied by 10
* to allow rounding later */
#define FIXED_PLL_SIZE ((1 << 22) * 10)
static void pll_factors(struct _pll_div *pll_div, unsigned int target,
unsigned int source)
{
u64 Kpart;
unsigned int K, Ndiv, Nmod;
Ndiv = target / source;
if (Ndiv < 6) {
source >>= 1;
pll_div->div2 = 1;
Ndiv = target / source;
} else
pll_div->div2 = 0;
if ((Ndiv < 6) || (Ndiv > 12))
printk(KERN_WARNING
"wm8753: unsupported N = %u\n", Ndiv);
pll_div->n = Ndiv;
Nmod = target % source;
Kpart = FIXED_PLL_SIZE * (long long)Nmod;
do_div(Kpart, source);
K = Kpart & 0xFFFFFFFF;
/* Check if we need to round */
if ((K % 10) >= 5)
K += 5;
/* Move down to proper range now rounding is done */
K /= 10;
pll_div->k = K;
}
static int wm8753_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
u16 reg, enable;
int offset;
struct snd_soc_codec *codec = codec_dai->codec;
if (pll_id < WM8753_PLL1 || pll_id > WM8753_PLL2)
return -ENODEV;
if (pll_id == WM8753_PLL1) {
offset = 0;
enable = 0x10;
reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xffef;
} else {
offset = 4;
enable = 0x8;
reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfff7;
}
if (!freq_in || !freq_out) {
/* disable PLL */
wm8753_write(codec, WM8753_PLL1CTL1 + offset, 0x0026);
wm8753_write(codec, WM8753_CLOCK, reg);
return 0;
} else {
u16 value = 0;
struct _pll_div pll_div;
pll_factors(&pll_div, freq_out * 8, freq_in);
/* set up N and K PLL divisor ratios */
/* bits 8:5 = PLL_N, bits 3:0 = PLL_K[21:18] */
value = (pll_div.n << 5) + ((pll_div.k & 0x3c0000) >> 18);
wm8753_write(codec, WM8753_PLL1CTL2 + offset, value);
/* bits 8:0 = PLL_K[17:9] */
value = (pll_div.k & 0x03fe00) >> 9;
wm8753_write(codec, WM8753_PLL1CTL3 + offset, value);
/* bits 8:0 = PLL_K[8:0] */
value = pll_div.k & 0x0001ff;
wm8753_write(codec, WM8753_PLL1CTL4 + offset, value);
/* set PLL as input and enable */
wm8753_write(codec, WM8753_PLL1CTL1 + offset, 0x0027 |
(pll_div.div2 << 3));
wm8753_write(codec, WM8753_CLOCK, reg | enable);
}
return 0;
}
struct _coeff_div {
u32 mclk;
u32 rate;
u8 sr:5;
u8 usb:1;
};
/* codec hifi mclk (after PLL) clock divider coefficients */
static const struct _coeff_div coeff_div[] = {
/* 8k */
{12288000, 8000, 0x6, 0x0},
{11289600, 8000, 0x16, 0x0},
{18432000, 8000, 0x7, 0x0},
{16934400, 8000, 0x17, 0x0},
{12000000, 8000, 0x6, 0x1},
/* 11.025k */
{11289600, 11025, 0x18, 0x0},
{16934400, 11025, 0x19, 0x0},
{12000000, 11025, 0x19, 0x1},
/* 16k */
{12288000, 16000, 0xa, 0x0},
{18432000, 16000, 0xb, 0x0},
{12000000, 16000, 0xa, 0x1},
/* 22.05k */
{11289600, 22050, 0x1a, 0x0},
{16934400, 22050, 0x1b, 0x0},
{12000000, 22050, 0x1b, 0x1},
/* 32k */
{12288000, 32000, 0xc, 0x0},
{18432000, 32000, 0xd, 0x0},
{12000000, 32000, 0xa, 0x1},
/* 44.1k */
{11289600, 44100, 0x10, 0x0},
{16934400, 44100, 0x11, 0x0},
{12000000, 44100, 0x11, 0x1},
/* 48k */
{12288000, 48000, 0x0, 0x0},
{18432000, 48000, 0x1, 0x0},
{12000000, 48000, 0x0, 0x1},
/* 88.2k */
{11289600, 88200, 0x1e, 0x0},
{16934400, 88200, 0x1f, 0x0},
{12000000, 88200, 0x1f, 0x1},
/* 96k */
{12288000, 96000, 0xe, 0x0},
{18432000, 96000, 0xf, 0x0},
{12000000, 96000, 0xe, 0x1},
};
static 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;
}
return -EINVAL;
}
/*
* Clock after PLL and dividers
*/
static int wm8753_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 wm8753_priv *wm8753 = codec->private_data;
switch (freq) {
case 11289600:
case 12000000:
case 12288000:
case 16934400:
case 18432000:
if (clk_id == WM8753_MCLK) {
wm8753->sysclk = freq;
return 0;
} else if (clk_id == WM8753_PCMCLK) {
wm8753->pcmclk = freq;
return 0;
}
break;
}
return -EINVAL;
}
/*
* Set's ADC and Voice DAC format.
*/
static int wm8753_vdac_adc_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01ec;
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
voice |= 0x0002;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
voice |= 0x0001;
break;
case SND_SOC_DAIFMT_DSP_A:
voice |= 0x0003;
break;
case SND_SOC_DAIFMT_DSP_B:
voice |= 0x0013;
break;
default:
return -EINVAL;
}
wm8753_write(codec, WM8753_PCM, voice);
return 0;
}
/*
* Set PCM DAI bit size and sample rate.
*/
static int wm8753_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 wm8753_priv *wm8753 = codec->private_data;
u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01f3;
u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x017f;
/* bit size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
voice |= 0x0004;
break;
case SNDRV_PCM_FORMAT_S24_LE:
voice |= 0x0008;
break;
case SNDRV_PCM_FORMAT_S32_LE:
voice |= 0x000c;
break;
}
/* sample rate */
if (params_rate(params) * 384 == wm8753->pcmclk)
srate |= 0x80;
wm8753_write(codec, WM8753_SRATE1, srate);
wm8753_write(codec, WM8753_PCM, voice);
return 0;
}
/*
* Set's PCM dai fmt and BCLK.
*/
static int wm8753_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 voice, ioctl;
voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x011f;
ioctl = wm8753_read_reg_cache(codec, WM8753_IOCTL) & 0x015d;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBM_CFM:
ioctl |= 0x2;
case SND_SOC_DAIFMT_CBM_CFS:
voice |= 0x0040;
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:
break;
case SND_SOC_DAIFMT_IB_NF:
voice |= 0x0080;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
voice &= ~0x0010;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
voice |= 0x0090;
break;
case SND_SOC_DAIFMT_IB_NF:
voice |= 0x0080;
break;
case SND_SOC_DAIFMT_NB_IF:
voice |= 0x0010;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
wm8753_write(codec, WM8753_PCM, voice);
wm8753_write(codec, WM8753_IOCTL, ioctl);
return 0;
}
static int wm8753_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
int div_id, int div)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 reg;
switch (div_id) {
case WM8753_PCMDIV:
reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0x003f;
wm8753_write(codec, WM8753_CLOCK, reg | div);
break;
case WM8753_BCLKDIV:
reg = wm8753_read_reg_cache(codec, WM8753_SRATE2) & 0x01c7;
wm8753_write(codec, WM8753_SRATE2, reg | div);
break;
case WM8753_VXCLKDIV:
reg = wm8753_read_reg_cache(codec, WM8753_SRATE2) & 0x003f;
wm8753_write(codec, WM8753_SRATE2, reg | div);
break;
default:
return -EINVAL;
}
return 0;
}
/*
* Set's HiFi DAC format.
*/
static int wm8753_hdac_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01e0;
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
hifi |= 0x0002;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
hifi |= 0x0001;
break;
case SND_SOC_DAIFMT_DSP_A:
hifi |= 0x0003;
break;
case SND_SOC_DAIFMT_DSP_B:
hifi |= 0x0013;
break;
default:
return -EINVAL;
}
wm8753_write(codec, WM8753_HIFI, hifi);
return 0;
}
/*
* Set's I2S DAI format.
*/
static int wm8753_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 ioctl, hifi;
hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x011f;
ioctl = wm8753_read_reg_cache(codec, WM8753_IOCTL) & 0x00ae;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBM_CFM:
ioctl |= 0x1;
case SND_SOC_DAIFMT_CBM_CFS:
hifi |= 0x0040;
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:
break;
case SND_SOC_DAIFMT_IB_NF:
hifi |= 0x0080;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
hifi &= ~0x0010;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
hifi |= 0x0090;
break;
case SND_SOC_DAIFMT_IB_NF:
hifi |= 0x0080;
break;
case SND_SOC_DAIFMT_NB_IF:
hifi |= 0x0010;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
wm8753_write(codec, WM8753_HIFI, hifi);
wm8753_write(codec, WM8753_IOCTL, ioctl);
return 0;
}
/*
* Set PCM DAI bit size and sample rate.
*/
static int wm8753_i2s_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 wm8753_priv *wm8753 = codec->private_data;
u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x01c0;
u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01f3;
int coeff;
/* is digital filter coefficient valid ? */
coeff = get_coeff(wm8753->sysclk, params_rate(params));
if (coeff < 0) {
printk(KERN_ERR "wm8753 invalid MCLK or rate\n");
return coeff;
}
wm8753_write(codec, WM8753_SRATE1, srate | (coeff_div[coeff].sr << 1) |
coeff_div[coeff].usb);
/* bit size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
hifi |= 0x0004;
break;
case SNDRV_PCM_FORMAT_S24_LE:
hifi |= 0x0008;
break;
case SNDRV_PCM_FORMAT_S32_LE:
hifi |= 0x000c;
break;
}
wm8753_write(codec, WM8753_HIFI, hifi);
return 0;
}
static int wm8753_mode1v_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 clock;
/* set clk source as pcmclk */
clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
wm8753_write(codec, WM8753_CLOCK, clock);
if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
return -EINVAL;
return wm8753_pcm_set_dai_fmt(codec_dai, fmt);
}
static int wm8753_mode1h_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
if (wm8753_hdac_set_dai_fmt(codec_dai, fmt) < 0)
return -EINVAL;
return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
}
static int wm8753_mode2_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 clock;
/* set clk source as pcmclk */
clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
wm8753_write(codec, WM8753_CLOCK, clock);
if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
return -EINVAL;
return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
}
static int wm8753_mode3_4_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 clock;
/* set clk source as mclk */
clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
wm8753_write(codec, WM8753_CLOCK, clock | 0x4);
if (wm8753_hdac_set_dai_fmt(codec_dai, fmt) < 0)
return -EINVAL;
if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
return -EINVAL;
return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
}
static int wm8753_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u16 mute_reg = wm8753_read_reg_cache(codec, WM8753_DAC) & 0xfff7;
/* the digital mute covers the HiFi and Voice DAC's on the WM8753.
* make sure we check if they are not both active when we mute */
if (mute && dai->id == 1) {
if (!wm8753_dai[WM8753_DAI_VOICE].playback.active ||
!wm8753_dai[WM8753_DAI_HIFI].playback.active)
wm8753_write(codec, WM8753_DAC, mute_reg | 0x8);
} else {
if (mute)
wm8753_write(codec, WM8753_DAC, mute_reg | 0x8);
else
wm8753_write(codec, WM8753_DAC, mute_reg);
}
return 0;
}
static int wm8753_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 pwr_reg = wm8753_read_reg_cache(codec, WM8753_PWR1) & 0xfe3e;
switch (level) {
case SND_SOC_BIAS_ON:
/* set vmid to 50k and unmute dac */
wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x00c0);
break;
case SND_SOC_BIAS_PREPARE:
/* set vmid to 5k for quick power up */
wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x01c1);
break;
case SND_SOC_BIAS_STANDBY:
/* mute dac and set vmid to 500k, enable VREF */
wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x0141);
break;
case SND_SOC_BIAS_OFF:
wm8753_write(codec, WM8753_PWR1, 0x0001);
break;
}
codec->bias_level = level;
return 0;
}
#define WM8753_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 WM8753_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
/*
* The WM8753 supports upto 4 different and mutually exclusive DAI
* configurations. This gives 2 PCM's available for use, hifi and voice.
* NOTE: The Voice PCM cannot play or capture audio to the CPU as it's DAI
* is connected between the wm8753 and a BT codec or GSM modem.
*
* 1. Voice over PCM DAI - HIFI DAC over HIFI DAI
* 2. Voice over HIFI DAI - HIFI disabled
* 3. Voice disabled - HIFI over HIFI
* 4. Voice disabled - HIFI over HIFI, uses voice DAI LRC for capture
*/
static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode1 = {
.hw_params = wm8753_i2s_hw_params,
.digital_mute = wm8753_mute,
.set_fmt = wm8753_mode1h_set_dai_fmt,
.set_clkdiv = wm8753_set_dai_clkdiv,
.set_pll = wm8753_set_dai_pll,
.set_sysclk = wm8753_set_dai_sysclk,
};
static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode1 = {
.hw_params = wm8753_pcm_hw_params,
.digital_mute = wm8753_mute,
.set_fmt = wm8753_mode1v_set_dai_fmt,
.set_clkdiv = wm8753_set_dai_clkdiv,
.set_pll = wm8753_set_dai_pll,
.set_sysclk = wm8753_set_dai_sysclk,
};
static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode2 = {
.hw_params = wm8753_pcm_hw_params,
.digital_mute = wm8753_mute,
.set_fmt = wm8753_mode2_set_dai_fmt,
.set_clkdiv = wm8753_set_dai_clkdiv,
.set_pll = wm8753_set_dai_pll,
.set_sysclk = wm8753_set_dai_sysclk,
};
static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode3 = {
.hw_params = wm8753_i2s_hw_params,
.digital_mute = wm8753_mute,
.set_fmt = wm8753_mode3_4_set_dai_fmt,
.set_clkdiv = wm8753_set_dai_clkdiv,
.set_pll = wm8753_set_dai_pll,
.set_sysclk = wm8753_set_dai_sysclk,
};
static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode4 = {
.hw_params = wm8753_i2s_hw_params,
.digital_mute = wm8753_mute,
.set_fmt = wm8753_mode3_4_set_dai_fmt,
.set_clkdiv = wm8753_set_dai_clkdiv,
.set_pll = wm8753_set_dai_pll,
.set_sysclk = wm8753_set_dai_sysclk,
};
static const struct snd_soc_dai wm8753_all_dai[] = {
/* DAI HiFi mode 1 */
{ .name = "WM8753 HiFi",
.id = 1,
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS},
.capture = { /* dummy for fast DAI switching */
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS},
.ops = &wm8753_dai_ops_hifi_mode1,
},
/* DAI Voice mode 1 */
{ .name = "WM8753 Voice",
.id = 1,
.playback = {
.stream_name = "Voice Playback",
.channels_min = 1,
.channels_max = 1,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.ops = &wm8753_dai_ops_voice_mode1,
},
/* DAI HiFi mode 2 - dummy */
{ .name = "WM8753 HiFi",
.id = 2,
},
/* DAI Voice mode 2 */
{ .name = "WM8753 Voice",
.id = 2,
.playback = {
.stream_name = "Voice Playback",
.channels_min = 1,
.channels_max = 1,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.ops = &wm8753_dai_ops_voice_mode2,
},
/* DAI HiFi mode 3 */
{ .name = "WM8753 HiFi",
.id = 3,
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.ops = &wm8753_dai_ops_hifi_mode3,
},
/* DAI Voice mode 3 - dummy */
{ .name = "WM8753 Voice",
.id = 3,
},
/* DAI HiFi mode 4 */
{ .name = "WM8753 HiFi",
.id = 4,
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8753_RATES,
.formats = WM8753_FORMATS,},
.ops = &wm8753_dai_ops_hifi_mode4,
},
/* DAI Voice mode 4 - dummy */
{ .name = "WM8753 Voice",
.id = 4,
},
};
struct snd_soc_dai wm8753_dai[] = {
{
.name = "WM8753 DAI 0",
},
{
.name = "WM8753 DAI 1",
},
};
EXPORT_SYMBOL_GPL(wm8753_dai);
static void wm8753_set_dai_mode(struct snd_soc_codec *codec, unsigned int mode)
{
if (mode < 4) {
int playback_active, capture_active, codec_active, pop_wait;
void *private_data;
struct list_head list;
playback_active = wm8753_dai[0].playback.active;
capture_active = wm8753_dai[0].capture.active;
codec_active = wm8753_dai[0].active;
private_data = wm8753_dai[0].private_data;
pop_wait = wm8753_dai[0].pop_wait;
list = wm8753_dai[0].list;
wm8753_dai[0] = wm8753_all_dai[mode << 1];
wm8753_dai[0].playback.active = playback_active;
wm8753_dai[0].capture.active = capture_active;
wm8753_dai[0].active = codec_active;
wm8753_dai[0].private_data = private_data;
wm8753_dai[0].pop_wait = pop_wait;
wm8753_dai[0].list = list;
playback_active = wm8753_dai[1].playback.active;
capture_active = wm8753_dai[1].capture.active;
codec_active = wm8753_dai[1].active;
private_data = wm8753_dai[1].private_data;
pop_wait = wm8753_dai[1].pop_wait;
list = wm8753_dai[1].list;
wm8753_dai[1] = wm8753_all_dai[(mode << 1) + 1];
wm8753_dai[1].playback.active = playback_active;
wm8753_dai[1].capture.active = capture_active;
wm8753_dai[1].active = codec_active;
wm8753_dai[1].private_data = private_data;
wm8753_dai[1].pop_wait = pop_wait;
wm8753_dai[1].list = list;
}
wm8753_dai[0].codec = codec;
wm8753_dai[1].codec = codec;
}
static void wm8753_work(struct work_struct *work)
{
struct snd_soc_codec *codec =
container_of(work, struct snd_soc_codec, delayed_work.work);
wm8753_set_bias_level(codec, codec->bias_level);
}
static int wm8753_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;
wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8753_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(wm8753_reg); i++) {
if (i + 1 == WM8753_RESET)
continue;
/* No point in writing hardware default values back */
if (cache[i] == wm8753_reg[i])
continue;
data[0] = ((i + 1) << 1) | ((cache[i] >> 8) & 0x0001);
data[1] = cache[i] & 0x00ff;
codec->hw_write(codec->control_data, data, 2);
}
wm8753_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* charge wm8753 caps */
if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
codec->bias_level = SND_SOC_BIAS_ON;
schedule_delayed_work(&codec->delayed_work,
msecs_to_jiffies(caps_charge));
}
return 0;
}
static struct snd_soc_codec *wm8753_codec;
static int wm8753_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
if (!wm8753_codec) {
dev_err(&pdev->dev, "WM8753 codec not yet registered\n");
return -EINVAL;
}
socdev->card->codec = wm8753_codec;
codec = wm8753_codec;
wm8753_set_dai_mode(codec, 0);
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "wm8753: failed to create pcms\n");
goto pcm_err;
}
snd_soc_add_controls(codec, wm8753_snd_controls,
ARRAY_SIZE(wm8753_snd_controls));
wm8753_add_widgets(codec);
return 0;
pcm_err:
return ret;
}
/*
* This function forces any delayed work to be queued and run.
*/
static int run_delayed_work(struct delayed_work *dwork)
{
int ret;
/* cancel any work waiting to be queued. */
ret = cancel_delayed_work(dwork);
/* if there was any work waiting then we run it now and
* wait for it's completion */
if (ret) {
schedule_delayed_work(dwork, 0);
flush_scheduled_work();
}
return ret;
}
/* power down chip */
static int wm8753_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_wm8753 = {
.probe = wm8753_probe,
.remove = wm8753_remove,
.suspend = wm8753_suspend,
.resume = wm8753_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753);
static int wm8753_register(struct wm8753_priv *wm8753)
{
int ret, i;
struct snd_soc_codec *codec = &wm8753->codec;
u16 reg;
if (wm8753_codec) {
dev_err(codec->dev, "Multiple WM8753 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 = "WM8753";
codec->owner = THIS_MODULE;
codec->read = wm8753_read_reg_cache;
codec->write = wm8753_write;
codec->bias_level = SND_SOC_BIAS_STANDBY;
codec->set_bias_level = wm8753_set_bias_level;
codec->dai = wm8753_dai;
codec->num_dai = 2;
codec->reg_cache_size = ARRAY_SIZE(wm8753->reg_cache) + 1;
codec->reg_cache = &wm8753->reg_cache;
codec->private_data = wm8753;
memcpy(codec->reg_cache, wm8753_reg, sizeof(wm8753->reg_cache));
INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
ret = wm8753_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
goto err;
}
/* charge output caps */
wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
schedule_delayed_work(&codec->delayed_work,
msecs_to_jiffies(caps_charge));
/* set the update bits */
reg = wm8753_read_reg_cache(codec, WM8753_LDAC);
wm8753_write(codec, WM8753_LDAC, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_RDAC);
wm8753_write(codec, WM8753_RDAC, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_LADC);
wm8753_write(codec, WM8753_LADC, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_RADC);
wm8753_write(codec, WM8753_RADC, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_LOUT1V);
wm8753_write(codec, WM8753_LOUT1V, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_ROUT1V);
wm8753_write(codec, WM8753_ROUT1V, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_LOUT2V);
wm8753_write(codec, WM8753_LOUT2V, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_ROUT2V);
wm8753_write(codec, WM8753_ROUT2V, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_LINVOL);
wm8753_write(codec, WM8753_LINVOL, reg | 0x0100);
reg = wm8753_read_reg_cache(codec, WM8753_RINVOL);
wm8753_write(codec, WM8753_RINVOL, reg | 0x0100);
wm8753_codec = codec;
for (i = 0; i < ARRAY_SIZE(wm8753_dai); i++)
wm8753_dai[i].dev = codec->dev;
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(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
if (ret != 0) {
dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
goto err_codec;
}
return 0;
err_codec:
run_delayed_work(&codec->delayed_work);
snd_soc_unregister_codec(codec);
err:
kfree(wm8753);
return ret;
}
static void wm8753_unregister(struct wm8753_priv *wm8753)
{
wm8753_set_bias_level(&wm8753->codec, SND_SOC_BIAS_OFF);
run_delayed_work(&wm8753->codec.delayed_work);
snd_soc_unregister_dais(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
snd_soc_unregister_codec(&wm8753->codec);
kfree(wm8753);
wm8753_codec = NULL;
}
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int wm8753_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct snd_soc_codec *codec;
struct wm8753_priv *wm8753;
wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
if (wm8753 == NULL)
return -ENOMEM;
codec = &wm8753->codec;
codec->hw_write = (hw_write_t)i2c_master_send;
codec->control_data = i2c;
i2c_set_clientdata(i2c, wm8753);
codec->dev = &i2c->dev;
return wm8753_register(wm8753);
}
static int wm8753_i2c_remove(struct i2c_client *client)
{
struct wm8753_priv *wm8753 = i2c_get_clientdata(client);
wm8753_unregister(wm8753);
return 0;
}
static const struct i2c_device_id wm8753_i2c_id[] = {
{ "wm8753", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8753_i2c_id);
static struct i2c_driver wm8753_i2c_driver = {
.driver = {
.name = "wm8753",
.owner = THIS_MODULE,
},
.probe = wm8753_i2c_probe,
.remove = wm8753_i2c_remove,
.id_table = wm8753_i2c_id,
};
#endif
#if defined(CONFIG_SPI_MASTER)
static int wm8753_spi_write(struct spi_device *spi, const char *data, int len)
{
struct spi_transfer t;
struct spi_message m;
u8 msg[2];
if (len <= 0)
return 0;
msg[0] = data[0];
msg[1] = data[1];
spi_message_init(&m);
memset(&t, 0, (sizeof t));
t.tx_buf = &msg[0];
t.len = len;
spi_message_add_tail(&t, &m);
spi_sync(spi, &m);
return len;
}
static int __devinit wm8753_spi_probe(struct spi_device *spi)
{
struct snd_soc_codec *codec;
struct wm8753_priv *wm8753;
wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
if (wm8753 == NULL)
return -ENOMEM;
codec = &wm8753->codec;
codec->control_data = spi;
codec->hw_write = (hw_write_t)wm8753_spi_write;
codec->dev = &spi->dev;
dev_set_drvdata(&spi->dev, wm8753);
return wm8753_register(wm8753);
}
static int __devexit wm8753_spi_remove(struct spi_device *spi)
{
struct wm8753_priv *wm8753 = dev_get_drvdata(&spi->dev);
wm8753_unregister(wm8753);
return 0;
}
static struct spi_driver wm8753_spi_driver = {
.driver = {
.name = "wm8753",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = wm8753_spi_probe,
.remove = __devexit_p(wm8753_spi_remove),
};
#endif
static int __init wm8753_modinit(void)
{
int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8753_i2c_driver);
if (ret != 0)
pr_err("Failed to register WM8753 I2C driver: %d\n", ret);
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8753_spi_driver);
if (ret != 0)
pr_err("Failed to register WM8753 SPI driver: %d\n", ret);
#endif
return 0;
}
module_init(wm8753_modinit);
static void __exit wm8753_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8753_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8753_spi_driver);
#endif
}
module_exit(wm8753_exit);
MODULE_DESCRIPTION("ASoC WM8753 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");
