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kernel-fxtec-pro1x/sound/soc/codecs/wm8753.c
Mark Brown b2c812e22d ASoC: Add indirection for CODEC private data 
One of the features of the multi CODEC work is that it embeds a struct
device in the CODEC to provide diagnostics via a sysfs class rather than
via the device tree, at which point it's much better to use the struct
device private data rather than having two places to store it. Provide
an accessor function to allow this change to be made more easily, and
update all the CODEC drivers are updated.

To ensure use of the accessor the private data structure member is
renamed, meaning that if code developed with older an older core that
still uses private_data is merged it will fail to build.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-04-17 10:46:22 +09:00

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/*
* 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 <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 = snd_soc_codec_get_drvdata(codec);
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 = snd_soc_codec_get_drvdata(codec);
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 = snd_soc_codec_get_drvdata(codec);
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;
snd_soc_codec_set_drvdata(codec, 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");
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