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linux-stable/sound/soc/codecs/wm8904.c
Mark Brown fbc2dae854 ASoC: Support GPIO based microphone detection for WM8904 
The WM8904 allows microphone detection signals to be brought out as
alternate functions of the GPIO signals which can be detected using
interrupt inputs on the CPU. Allow this to be configured using
platform data.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-16 16:03:30 +00:00

2673 lines
74 KiB
C
Raw Blame History

/*
* wm8904.c -- WM8904 ALSA SoC Audio driver
*
* Copyright 2009 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.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 <sound/wm8904.h>
#include "wm8904.h"
static struct snd_soc_codec *wm8904_codec;
struct snd_soc_codec_device soc_codec_dev_wm8904;
enum wm8904_type {
WM8904,
WM8912,
};
#define WM8904_NUM_DCS_CHANNELS 4
#define WM8904_NUM_SUPPLIES 5
static const char *wm8904_supply_names[WM8904_NUM_SUPPLIES] = {
"DCVDD",
"DBVDD",
"AVDD",
"CPVDD",
"MICVDD",
};
/* codec private data */
struct wm8904_priv {
struct snd_soc_codec codec;
u16 reg_cache[WM8904_MAX_REGISTER + 1];
enum wm8904_type devtype;
struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES];
struct wm8904_pdata *pdata;
int deemph;
/* Platform provided DRC configuration */
const char **drc_texts;
int drc_cfg;
struct soc_enum drc_enum;
/* Platform provided ReTune mobile configuration */
int num_retune_mobile_texts;
const char **retune_mobile_texts;
int retune_mobile_cfg;
struct soc_enum retune_mobile_enum;
/* FLL setup */
int fll_src;
int fll_fref;
int fll_fout;
/* Clocking configuration */
unsigned int mclk_rate;
int sysclk_src;
unsigned int sysclk_rate;
int tdm_width;
int tdm_slots;
int bclk;
int fs;
/* DC servo configuration - cached offset values */
int dcs_state[WM8904_NUM_DCS_CHANNELS];
};
static const u16 wm8904_reg[WM8904_MAX_REGISTER + 1] = {
0x8904, /* R0 - SW Reset and ID */
0x0000, /* R1 - Revision */
0x0000, /* R2 */
0x0000, /* R3 */
0x0018, /* R4 - Bias Control 0 */
0x0000, /* R5 - VMID Control 0 */
0x0000, /* R6 - Mic Bias Control 0 */
0x0000, /* R7 - Mic Bias Control 1 */
0x0001, /* R8 - Analogue DAC 0 */
0x9696, /* R9 - mic Filter Control */
0x0001, /* R10 - Analogue ADC 0 */
0x0000, /* R11 */
0x0000, /* R12 - Power Management 0 */
0x0000, /* R13 */
0x0000, /* R14 - Power Management 2 */
0x0000, /* R15 - Power Management 3 */
0x0000, /* R16 */
0x0000, /* R17 */
0x0000, /* R18 - Power Management 6 */
0x0000, /* R19 */
0x945E, /* R20 - Clock Rates 0 */
0x0C05, /* R21 - Clock Rates 1 */
0x0006, /* R22 - Clock Rates 2 */
0x0000, /* R23 */
0x0050, /* R24 - Audio Interface 0 */
0x000A, /* R25 - Audio Interface 1 */
0x00E4, /* R26 - Audio Interface 2 */
0x0040, /* R27 - Audio Interface 3 */
0x0000, /* R28 */
0x0000, /* R29 */
0x00C0, /* R30 - DAC Digital Volume Left */
0x00C0, /* R31 - DAC Digital Volume Right */
0x0000, /* R32 - DAC Digital 0 */
0x0008, /* R33 - DAC Digital 1 */
0x0000, /* R34 */
0x0000, /* R35 */
0x00C0, /* R36 - ADC Digital Volume Left */
0x00C0, /* R37 - ADC Digital Volume Right */
0x0010, /* R38 - ADC Digital 0 */
0x0000, /* R39 - Digital Microphone 0 */
0x01AF, /* R40 - DRC 0 */
0x3248, /* R41 - DRC 1 */
0x0000, /* R42 - DRC 2 */
0x0000, /* R43 - DRC 3 */
0x0085, /* R44 - Analogue Left Input 0 */
0x0085, /* R45 - Analogue Right Input 0 */
0x0044, /* R46 - Analogue Left Input 1 */
0x0044, /* R47 - Analogue Right Input 1 */
0x0000, /* R48 */
0x0000, /* R49 */
0x0000, /* R50 */
0x0000, /* R51 */
0x0000, /* R52 */
0x0000, /* R53 */
0x0000, /* R54 */
0x0000, /* R55 */
0x0000, /* R56 */
0x002D, /* R57 - Analogue OUT1 Left */
0x002D, /* R58 - Analogue OUT1 Right */
0x0039, /* R59 - Analogue OUT2 Left */
0x0039, /* R60 - Analogue OUT2 Right */
0x0000, /* R61 - Analogue OUT12 ZC */
0x0000, /* R62 */
0x0000, /* R63 */
0x0000, /* R64 */
0x0000, /* R65 */
0x0000, /* R66 */
0x0000, /* R67 - DC Servo 0 */
0x0000, /* R68 - DC Servo 1 */
0xAAAA, /* R69 - DC Servo 2 */
0x0000, /* R70 */
0xAAAA, /* R71 - DC Servo 4 */
0xAAAA, /* R72 - DC Servo 5 */
0x0000, /* R73 - DC Servo 6 */
0x0000, /* R74 - DC Servo 7 */
0x0000, /* R75 - DC Servo 8 */
0x0000, /* R76 - DC Servo 9 */
0x0000, /* R77 - DC Servo Readback 0 */
0x0000, /* R78 */
0x0000, /* R79 */
0x0000, /* R80 */
0x0000, /* R81 */
0x0000, /* R82 */
0x0000, /* R83 */
0x0000, /* R84 */
0x0000, /* R85 */
0x0000, /* R86 */
0x0000, /* R87 */
0x0000, /* R88 */
0x0000, /* R89 */
0x0000, /* R90 - Analogue HP 0 */
0x0000, /* R91 */
0x0000, /* R92 */
0x0000, /* R93 */
0x0000, /* R94 - Analogue Lineout 0 */
0x0000, /* R95 */
0x0000, /* R96 */
0x0000, /* R97 */
0x0000, /* R98 - Charge Pump 0 */
0x0000, /* R99 */
0x0000, /* R100 */
0x0000, /* R101 */
0x0000, /* R102 */
0x0000, /* R103 */
0x0004, /* R104 - Class W 0 */
0x0000, /* R105 */
0x0000, /* R106 */
0x0000, /* R107 */
0x0000, /* R108 - Write Sequencer 0 */
0x0000, /* R109 - Write Sequencer 1 */
0x0000, /* R110 - Write Sequencer 2 */
0x0000, /* R111 - Write Sequencer 3 */
0x0000, /* R112 - Write Sequencer 4 */
0x0000, /* R113 */
0x0000, /* R114 */
0x0000, /* R115 */
0x0000, /* R116 - FLL Control 1 */
0x0007, /* R117 - FLL Control 2 */
0x0000, /* R118 - FLL Control 3 */
0x2EE0, /* R119 - FLL Control 4 */
0x0004, /* R120 - FLL Control 5 */
0x0014, /* R121 - GPIO Control 1 */
0x0010, /* R122 - GPIO Control 2 */
0x0010, /* R123 - GPIO Control 3 */
0x0000, /* R124 - GPIO Control 4 */
0x0000, /* R125 */
0x0000, /* R126 - Digital Pulls */
0x0000, /* R127 - Interrupt Status */
0xFFFF, /* R128 - Interrupt Status Mask */
0x0000, /* R129 - Interrupt Polarity */
0x0000, /* R130 - Interrupt Debounce */
0x0000, /* R131 */
0x0000, /* R132 */
0x0000, /* R133 */
0x0000, /* R134 - EQ1 */
0x000C, /* R135 - EQ2 */
0x000C, /* R136 - EQ3 */
0x000C, /* R137 - EQ4 */
0x000C, /* R138 - EQ5 */
0x000C, /* R139 - EQ6 */
0x0FCA, /* R140 - EQ7 */
0x0400, /* R141 - EQ8 */
0x00D8, /* R142 - EQ9 */
0x1EB5, /* R143 - EQ10 */
0xF145, /* R144 - EQ11 */
0x0B75, /* R145 - EQ12 */
0x01C5, /* R146 - EQ13 */
0x1C58, /* R147 - EQ14 */
0xF373, /* R148 - EQ15 */
0x0A54, /* R149 - EQ16 */
0x0558, /* R150 - EQ17 */
0x168E, /* R151 - EQ18 */
0xF829, /* R152 - EQ19 */
0x07AD, /* R153 - EQ20 */
0x1103, /* R154 - EQ21 */
0x0564, /* R155 - EQ22 */
0x0559, /* R156 - EQ23 */
0x4000, /* R157 - EQ24 */
0x0000, /* R158 */
0x0000, /* R159 */
0x0000, /* R160 */
0x0000, /* R161 - Control Interface Test 1 */
0x0000, /* R162 */
0x0000, /* R163 */
0x0000, /* R164 */
0x0000, /* R165 */
0x0000, /* R166 */
0x0000, /* R167 */
0x0000, /* R168 */
0x0000, /* R169 */
0x0000, /* R170 */
0x0000, /* R171 */
0x0000, /* R172 */
0x0000, /* R173 */
0x0000, /* R174 */
0x0000, /* R175 */
0x0000, /* R176 */
0x0000, /* R177 */
0x0000, /* R178 */
0x0000, /* R179 */
0x0000, /* R180 */
0x0000, /* R181 */
0x0000, /* R182 */
0x0000, /* R183 */
0x0000, /* R184 */
0x0000, /* R185 */
0x0000, /* R186 */
0x0000, /* R187 */
0x0000, /* R188 */
0x0000, /* R189 */
0x0000, /* R190 */
0x0000, /* R191 */
0x0000, /* R192 */
0x0000, /* R193 */
0x0000, /* R194 */
0x0000, /* R195 */
0x0000, /* R196 */
0x0000, /* R197 */
0x0000, /* R198 */
0x0000, /* R199 */
0x0000, /* R200 */
0x0000, /* R201 */
0x0000, /* R202 */
0x0000, /* R203 */
0x0000, /* R204 - Analogue Output Bias 0 */
0x0000, /* R205 */
0x0000, /* R206 */
0x0000, /* R207 */
0x0000, /* R208 */
0x0000, /* R209 */
0x0000, /* R210 */
0x0000, /* R211 */
0x0000, /* R212 */
0x0000, /* R213 */
0x0000, /* R214 */
0x0000, /* R215 */
0x0000, /* R216 */
0x0000, /* R217 */
0x0000, /* R218 */
0x0000, /* R219 */
0x0000, /* R220 */
0x0000, /* R221 */
0x0000, /* R222 */
0x0000, /* R223 */
0x0000, /* R224 */
0x0000, /* R225 */
0x0000, /* R226 */
0x0000, /* R227 */
0x0000, /* R228 */
0x0000, /* R229 */
0x0000, /* R230 */
0x0000, /* R231 */
0x0000, /* R232 */
0x0000, /* R233 */
0x0000, /* R234 */
0x0000, /* R235 */
0x0000, /* R236 */
0x0000, /* R237 */
0x0000, /* R238 */
0x0000, /* R239 */
0x0000, /* R240 */
0x0000, /* R241 */
0x0000, /* R242 */
0x0000, /* R243 */
0x0000, /* R244 */
0x0000, /* R245 */
0x0000, /* R246 */
0x0000, /* R247 - FLL NCO Test 0 */
0x0019, /* R248 - FLL NCO Test 1 */
};
static struct {
int readable;
int writable;
int vol;
} wm8904_access[] = {
{ 0xFFFF, 0xFFFF, 1 }, /* R0 - SW Reset and ID */
{ 0x0000, 0x0000, 0 }, /* R1 - Revision */
{ 0x0000, 0x0000, 0 }, /* R2 */
{ 0x0000, 0x0000, 0 }, /* R3 */
{ 0x001F, 0x001F, 0 }, /* R4 - Bias Control 0 */
{ 0x0047, 0x0047, 0 }, /* R5 - VMID Control 0 */
{ 0x007F, 0x007F, 0 }, /* R6 - Mic Bias Control 0 */
{ 0xC007, 0xC007, 0 }, /* R7 - Mic Bias Control 1 */
{ 0x001E, 0x001E, 0 }, /* R8 - Analogue DAC 0 */
{ 0xFFFF, 0xFFFF, 0 }, /* R9 - mic Filter Control */
{ 0x0001, 0x0001, 0 }, /* R10 - Analogue ADC 0 */
{ 0x0000, 0x0000, 0 }, /* R11 */
{ 0x0003, 0x0003, 0 }, /* R12 - Power Management 0 */
{ 0x0000, 0x0000, 0 }, /* R13 */
{ 0x0003, 0x0003, 0 }, /* R14 - Power Management 2 */
{ 0x0003, 0x0003, 0 }, /* R15 - Power Management 3 */
{ 0x0000, 0x0000, 0 }, /* R16 */
{ 0x0000, 0x0000, 0 }, /* R17 */
{ 0x000F, 0x000F, 0 }, /* R18 - Power Management 6 */
{ 0x0000, 0x0000, 0 }, /* R19 */
{ 0x7001, 0x7001, 0 }, /* R20 - Clock Rates 0 */
{ 0x3C07, 0x3C07, 0 }, /* R21 - Clock Rates 1 */
{ 0xD00F, 0xD00F, 0 }, /* R22 - Clock Rates 2 */
{ 0x0000, 0x0000, 0 }, /* R23 */
{ 0x1FFF, 0x1FFF, 0 }, /* R24 - Audio Interface 0 */
{ 0x3DDF, 0x3DDF, 0 }, /* R25 - Audio Interface 1 */
{ 0x0F1F, 0x0F1F, 0 }, /* R26 - Audio Interface 2 */
{ 0x0FFF, 0x0FFF, 0 }, /* R27 - Audio Interface 3 */
{ 0x0000, 0x0000, 0 }, /* R28 */
{ 0x0000, 0x0000, 0 }, /* R29 */
{ 0x00FF, 0x01FF, 0 }, /* R30 - DAC Digital Volume Left */
{ 0x00FF, 0x01FF, 0 }, /* R31 - DAC Digital Volume Right */
{ 0x0FFF, 0x0FFF, 0 }, /* R32 - DAC Digital 0 */
{ 0x1E4E, 0x1E4E, 0 }, /* R33 - DAC Digital 1 */
{ 0x0000, 0x0000, 0 }, /* R34 */
{ 0x0000, 0x0000, 0 }, /* R35 */
{ 0x00FF, 0x01FF, 0 }, /* R36 - ADC Digital Volume Left */
{ 0x00FF, 0x01FF, 0 }, /* R37 - ADC Digital Volume Right */
{ 0x0073, 0x0073, 0 }, /* R38 - ADC Digital 0 */
{ 0x1800, 0x1800, 0 }, /* R39 - Digital Microphone 0 */
{ 0xDFEF, 0xDFEF, 0 }, /* R40 - DRC 0 */
{ 0xFFFF, 0xFFFF, 0 }, /* R41 - DRC 1 */
{ 0x003F, 0x003F, 0 }, /* R42 - DRC 2 */
{ 0x07FF, 0x07FF, 0 }, /* R43 - DRC 3 */
{ 0x009F, 0x009F, 0 }, /* R44 - Analogue Left Input 0 */
{ 0x009F, 0x009F, 0 }, /* R45 - Analogue Right Input 0 */
{ 0x007F, 0x007F, 0 }, /* R46 - Analogue Left Input 1 */
{ 0x007F, 0x007F, 0 }, /* R47 - Analogue Right Input 1 */
{ 0x0000, 0x0000, 0 }, /* R48 */
{ 0x0000, 0x0000, 0 }, /* R49 */
{ 0x0000, 0x0000, 0 }, /* R50 */
{ 0x0000, 0x0000, 0 }, /* R51 */
{ 0x0000, 0x0000, 0 }, /* R52 */
{ 0x0000, 0x0000, 0 }, /* R53 */
{ 0x0000, 0x0000, 0 }, /* R54 */
{ 0x0000, 0x0000, 0 }, /* R55 */
{ 0x0000, 0x0000, 0 }, /* R56 */
{ 0x017F, 0x01FF, 0 }, /* R57 - Analogue OUT1 Left */
{ 0x017F, 0x01FF, 0 }, /* R58 - Analogue OUT1 Right */
{ 0x017F, 0x01FF, 0 }, /* R59 - Analogue OUT2 Left */
{ 0x017F, 0x01FF, 0 }, /* R60 - Analogue OUT2 Right */
{ 0x000F, 0x000F, 0 }, /* R61 - Analogue OUT12 ZC */
{ 0x0000, 0x0000, 0 }, /* R62 */
{ 0x0000, 0x0000, 0 }, /* R63 */
{ 0x0000, 0x0000, 0 }, /* R64 */
{ 0x0000, 0x0000, 0 }, /* R65 */
{ 0x0000, 0x0000, 0 }, /* R66 */
{ 0x000F, 0x000F, 0 }, /* R67 - DC Servo 0 */
{ 0xFFFF, 0xFFFF, 1 }, /* R68 - DC Servo 1 */
{ 0x0F0F, 0x0F0F, 0 }, /* R69 - DC Servo 2 */
{ 0x0000, 0x0000, 0 }, /* R70 */
{ 0x007F, 0x007F, 0 }, /* R71 - DC Servo 4 */
{ 0x007F, 0x007F, 0 }, /* R72 - DC Servo 5 */
{ 0x00FF, 0x00FF, 1 }, /* R73 - DC Servo 6 */
{ 0x00FF, 0x00FF, 1 }, /* R74 - DC Servo 7 */
{ 0x00FF, 0x00FF, 1 }, /* R75 - DC Servo 8 */
{ 0x00FF, 0x00FF, 1 }, /* R76 - DC Servo 9 */
{ 0x0FFF, 0x0000, 1 }, /* R77 - DC Servo Readback 0 */
{ 0x0000, 0x0000, 0 }, /* R78 */
{ 0x0000, 0x0000, 0 }, /* R79 */
{ 0x0000, 0x0000, 0 }, /* R80 */
{ 0x0000, 0x0000, 0 }, /* R81 */
{ 0x0000, 0x0000, 0 }, /* R82 */
{ 0x0000, 0x0000, 0 }, /* R83 */
{ 0x0000, 0x0000, 0 }, /* R84 */
{ 0x0000, 0x0000, 0 }, /* R85 */
{ 0x0000, 0x0000, 0 }, /* R86 */
{ 0x0000, 0x0000, 0 }, /* R87 */
{ 0x0000, 0x0000, 0 }, /* R88 */
{ 0x0000, 0x0000, 0 }, /* R89 */
{ 0x00FF, 0x00FF, 0 }, /* R90 - Analogue HP 0 */
{ 0x0000, 0x0000, 0 }, /* R91 */
{ 0x0000, 0x0000, 0 }, /* R92 */
{ 0x0000, 0x0000, 0 }, /* R93 */
{ 0x00FF, 0x00FF, 0 }, /* R94 - Analogue Lineout 0 */
{ 0x0000, 0x0000, 0 }, /* R95 */
{ 0x0000, 0x0000, 0 }, /* R96 */
{ 0x0000, 0x0000, 0 }, /* R97 */
{ 0x0001, 0x0001, 0 }, /* R98 - Charge Pump 0 */
{ 0x0000, 0x0000, 0 }, /* R99 */
{ 0x0000, 0x0000, 0 }, /* R100 */
{ 0x0000, 0x0000, 0 }, /* R101 */
{ 0x0000, 0x0000, 0 }, /* R102 */
{ 0x0000, 0x0000, 0 }, /* R103 */
{ 0x0001, 0x0001, 0 }, /* R104 - Class W 0 */
{ 0x0000, 0x0000, 0 }, /* R105 */
{ 0x0000, 0x0000, 0 }, /* R106 */
{ 0x0000, 0x0000, 0 }, /* R107 */
{ 0x011F, 0x011F, 0 }, /* R108 - Write Sequencer 0 */
{ 0x7FFF, 0x7FFF, 0 }, /* R109 - Write Sequencer 1 */
{ 0x4FFF, 0x4FFF, 0 }, /* R110 - Write Sequencer 2 */
{ 0x003F, 0x033F, 0 }, /* R111 - Write Sequencer 3 */
{ 0x03F1, 0x0000, 0 }, /* R112 - Write Sequencer 4 */
{ 0x0000, 0x0000, 0 }, /* R113 */
{ 0x0000, 0x0000, 0 }, /* R114 */
{ 0x0000, 0x0000, 0 }, /* R115 */
{ 0x0007, 0x0007, 0 }, /* R116 - FLL Control 1 */
{ 0x3F77, 0x3F77, 0 }, /* R117 - FLL Control 2 */
{ 0xFFFF, 0xFFFF, 0 }, /* R118 - FLL Control 3 */
{ 0x7FEF, 0x7FEF, 0 }, /* R119 - FLL Control 4 */
{ 0x001B, 0x001B, 0 }, /* R120 - FLL Control 5 */
{ 0x003F, 0x003F, 0 }, /* R121 - GPIO Control 1 */
{ 0x003F, 0x003F, 0 }, /* R122 - GPIO Control 2 */
{ 0x003F, 0x003F, 0 }, /* R123 - GPIO Control 3 */
{ 0x038F, 0x038F, 0 }, /* R124 - GPIO Control 4 */
{ 0x0000, 0x0000, 0 }, /* R125 */
{ 0x00FF, 0x00FF, 0 }, /* R126 - Digital Pulls */
{ 0x07FF, 0x03FF, 1 }, /* R127 - Interrupt Status */
{ 0x03FF, 0x03FF, 0 }, /* R128 - Interrupt Status Mask */
{ 0x03FF, 0x03FF, 0 }, /* R129 - Interrupt Polarity */
{ 0x03FF, 0x03FF, 0 }, /* R130 - Interrupt Debounce */
{ 0x0000, 0x0000, 0 }, /* R131 */
{ 0x0000, 0x0000, 0 }, /* R132 */
{ 0x0000, 0x0000, 0 }, /* R133 */
{ 0x0001, 0x0001, 0 }, /* R134 - EQ1 */
{ 0x001F, 0x001F, 0 }, /* R135 - EQ2 */
{ 0x001F, 0x001F, 0 }, /* R136 - EQ3 */
{ 0x001F, 0x001F, 0 }, /* R137 - EQ4 */
{ 0x001F, 0x001F, 0 }, /* R138 - EQ5 */
{ 0x001F, 0x001F, 0 }, /* R139 - EQ6 */
{ 0xFFFF, 0xFFFF, 0 }, /* R140 - EQ7 */
{ 0xFFFF, 0xFFFF, 0 }, /* R141 - EQ8 */
{ 0xFFFF, 0xFFFF, 0 }, /* R142 - EQ9 */
{ 0xFFFF, 0xFFFF, 0 }, /* R143 - EQ10 */
{ 0xFFFF, 0xFFFF, 0 }, /* R144 - EQ11 */
{ 0xFFFF, 0xFFFF, 0 }, /* R145 - EQ12 */
{ 0xFFFF, 0xFFFF, 0 }, /* R146 - EQ13 */
{ 0xFFFF, 0xFFFF, 0 }, /* R147 - EQ14 */
{ 0xFFFF, 0xFFFF, 0 }, /* R148 - EQ15 */
{ 0xFFFF, 0xFFFF, 0 }, /* R149 - EQ16 */
{ 0xFFFF, 0xFFFF, 0 }, /* R150 - EQ17 */
{ 0xFFFF, 0xFFFF, 0 }, /* R151wm8523_dai - EQ18 */
{ 0xFFFF, 0xFFFF, 0 }, /* R152 - EQ19 */
{ 0xFFFF, 0xFFFF, 0 }, /* R153 - EQ20 */
{ 0xFFFF, 0xFFFF, 0 }, /* R154 - EQ21 */
{ 0xFFFF, 0xFFFF, 0 }, /* R155 - EQ22 */
{ 0xFFFF, 0xFFFF, 0 }, /* R156 - EQ23 */
{ 0xFFFF, 0xFFFF, 0 }, /* R157 - EQ24 */
{ 0x0000, 0x0000, 0 }, /* R158 */
{ 0x0000, 0x0000, 0 }, /* R159 */
{ 0x0000, 0x0000, 0 }, /* R160 */
{ 0x0002, 0x0002, 0 }, /* R161 - Control Interface Test 1 */
{ 0x0000, 0x0000, 0 }, /* R162 */
{ 0x0000, 0x0000, 0 }, /* R163 */
{ 0x0000, 0x0000, 0 }, /* R164 */
{ 0x0000, 0x0000, 0 }, /* R165 */
{ 0x0000, 0x0000, 0 }, /* R166 */
{ 0x0000, 0x0000, 0 }, /* R167 */
{ 0x0000, 0x0000, 0 }, /* R168 */
{ 0x0000, 0x0000, 0 }, /* R169 */
{ 0x0000, 0x0000, 0 }, /* R170 */
{ 0x0000, 0x0000, 0 }, /* R171 */
{ 0x0000, 0x0000, 0 }, /* R172 */
{ 0x0000, 0x0000, 0 }, /* R173 */
{ 0x0000, 0x0000, 0 }, /* R174 */
{ 0x0000, 0x0000, 0 }, /* R175 */
{ 0x0000, 0x0000, 0 }, /* R176 */
{ 0x0000, 0x0000, 0 }, /* R177 */
{ 0x0000, 0x0000, 0 }, /* R178 */
{ 0x0000, 0x0000, 0 }, /* R179 */
{ 0x0000, 0x0000, 0 }, /* R180 */
{ 0x0000, 0x0000, 0 }, /* R181 */
{ 0x0000, 0x0000, 0 }, /* R182 */
{ 0x0000, 0x0000, 0 }, /* R183 */
{ 0x0000, 0x0000, 0 }, /* R184 */
{ 0x0000, 0x0000, 0 }, /* R185 */
{ 0x0000, 0x0000, 0 }, /* R186 */
{ 0x0000, 0x0000, 0 }, /* R187 */
{ 0x0000, 0x0000, 0 }, /* R188 */
{ 0x0000, 0x0000, 0 }, /* R189 */
{ 0x0000, 0x0000, 0 }, /* R190 */
{ 0x0000, 0x0000, 0 }, /* R191 */
{ 0x0000, 0x0000, 0 }, /* R192 */
{ 0x0000, 0x0000, 0 }, /* R193 */
{ 0x0000, 0x0000, 0 }, /* R194 */
{ 0x0000, 0x0000, 0 }, /* R195 */
{ 0x0000, 0x0000, 0 }, /* R196 */
{ 0x0000, 0x0000, 0 }, /* R197 */
{ 0x0000, 0x0000, 0 }, /* R198 */
{ 0x0000, 0x0000, 0 }, /* R199 */
{ 0x0000, 0x0000, 0 }, /* R200 */
{ 0x0000, 0x0000, 0 }, /* R201 */
{ 0x0000, 0x0000, 0 }, /* R202 */
{ 0x0000, 0x0000, 0 }, /* R203 */
{ 0x0070, 0x0070, 0 }, /* R204 - Analogue Output Bias 0 */
{ 0x0000, 0x0000, 0 }, /* R205 */
{ 0x0000, 0x0000, 0 }, /* R206 */
{ 0x0000, 0x0000, 0 }, /* R207 */
{ 0x0000, 0x0000, 0 }, /* R208 */
{ 0x0000, 0x0000, 0 }, /* R209 */
{ 0x0000, 0x0000, 0 }, /* R210 */
{ 0x0000, 0x0000, 0 }, /* R211 */
{ 0x0000, 0x0000, 0 }, /* R212 */
{ 0x0000, 0x0000, 0 }, /* R213 */
{ 0x0000, 0x0000, 0 }, /* R214 */
{ 0x0000, 0x0000, 0 }, /* R215 */
{ 0x0000, 0x0000, 0 }, /* R216 */
{ 0x0000, 0x0000, 0 }, /* R217 */
{ 0x0000, 0x0000, 0 }, /* R218 */
{ 0x0000, 0x0000, 0 }, /* R219 */
{ 0x0000, 0x0000, 0 }, /* R220 */
{ 0x0000, 0x0000, 0 }, /* R221 */
{ 0x0000, 0x0000, 0 }, /* R222 */
{ 0x0000, 0x0000, 0 }, /* R223 */
{ 0x0000, 0x0000, 0 }, /* R224 */
{ 0x0000, 0x0000, 0 }, /* R225 */
{ 0x0000, 0x0000, 0 }, /* R226 */
{ 0x0000, 0x0000, 0 }, /* R227 */
{ 0x0000, 0x0000, 0 }, /* R228 */
{ 0x0000, 0x0000, 0 }, /* R229 */
{ 0x0000, 0x0000, 0 }, /* R230 */
{ 0x0000, 0x0000, 0 }, /* R231 */
{ 0x0000, 0x0000, 0 }, /* R232 */
{ 0x0000, 0x0000, 0 }, /* R233 */
{ 0x0000, 0x0000, 0 }, /* R234 */
{ 0x0000, 0x0000, 0 }, /* R235 */
{ 0x0000, 0x0000, 0 }, /* R236 */
{ 0x0000, 0x0000, 0 }, /* R237 */
{ 0x0000, 0x0000, 0 }, /* R238 */
{ 0x0000, 0x0000, 0 }, /* R239 */
{ 0x0000, 0x0000, 0 }, /* R240 */
{ 0x0000, 0x0000, 0 }, /* R241 */
{ 0x0000, 0x0000, 0 }, /* R242 */
{ 0x0000, 0x0000, 0 }, /* R243 */
{ 0x0000, 0x0000, 0 }, /* R244 */
{ 0x0000, 0x0000, 0 }, /* R245 */
{ 0x0000, 0x0000, 0 }, /* R246 */
{ 0x0001, 0x0001, 0 }, /* R247 - FLL NCO Test 0 */
{ 0x003F, 0x003F, 0 }, /* R248 - FLL NCO Test 1 */
};
static int wm8904_volatile_register(unsigned int reg)
{
return wm8904_access[reg].vol;
}
static int wm8904_reset(struct snd_soc_codec *codec)
{
return snd_soc_write(codec, WM8904_SW_RESET_AND_ID, 0);
}
static int wm8904_configure_clocking(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = codec->private_data;
unsigned int clock0, clock2, rate;
/* Gate the clock while we're updating to avoid misclocking */
clock2 = snd_soc_read(codec, WM8904_CLOCK_RATES_2);
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
WM8904_SYSCLK_SRC, 0);
/* This should be done on init() for bypass paths */
switch (wm8904->sysclk_src) {
case WM8904_CLK_MCLK:
dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8904->mclk_rate);
clock2 &= ~WM8904_SYSCLK_SRC;
rate = wm8904->mclk_rate;
/* Ensure the FLL is stopped */
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
break;
case WM8904_CLK_FLL:
dev_dbg(codec->dev, "Using %dHz FLL clock\n",
wm8904->fll_fout);
clock2 |= WM8904_SYSCLK_SRC;
rate = wm8904->fll_fout;
break;
default:
dev_err(codec->dev, "System clock not configured\n");
return -EINVAL;
}
/* SYSCLK shouldn't be over 13.5MHz */
if (rate > 13500000) {
clock0 = WM8904_MCLK_DIV;
wm8904->sysclk_rate = rate / 2;
} else {
clock0 = 0;
wm8904->sysclk_rate = rate;
}
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_0, WM8904_MCLK_DIV,
clock0);
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
WM8904_CLK_SYS_ENA | WM8904_SYSCLK_SRC, clock2);
dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8904->sysclk_rate);
return 0;
}
static void wm8904_set_drc(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = codec->private_data;
struct wm8904_pdata *pdata = wm8904->pdata;
int save, i;
/* Save any enables; the configuration should clear them. */
save = snd_soc_read(codec, WM8904_DRC_0);
for (i = 0; i < WM8904_DRC_REGS; i++)
snd_soc_update_bits(codec, WM8904_DRC_0 + i, 0xffff,
pdata->drc_cfgs[wm8904->drc_cfg].regs[i]);
/* Reenable the DRC */
snd_soc_update_bits(codec, WM8904_DRC_0,
WM8904_DRC_ENA | WM8904_DRC_DAC_PATH, save);
}
static int wm8904_put_drc_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = codec->private_data;
struct wm8904_pdata *pdata = wm8904->pdata;
int value = ucontrol->value.integer.value[0];
if (value >= pdata->num_drc_cfgs)
return -EINVAL;
wm8904->drc_cfg = value;
wm8904_set_drc(codec);
return 0;
}
static int wm8904_get_drc_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = codec->private_data;
ucontrol->value.enumerated.item[0] = wm8904->drc_cfg;
return 0;
}
static void wm8904_set_retune_mobile(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = codec->private_data;
struct wm8904_pdata *pdata = wm8904->pdata;
int best, best_val, save, i, cfg;
if (!pdata || !wm8904->num_retune_mobile_texts)
return;
/* Find the version of the currently selected configuration
* with the nearest sample rate. */
cfg = wm8904->retune_mobile_cfg;
best = 0;
best_val = INT_MAX;
for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
if (strcmp(pdata->retune_mobile_cfgs[i].name,
wm8904->retune_mobile_texts[cfg]) == 0 &&
abs(pdata->retune_mobile_cfgs[i].rate
- wm8904->fs) < best_val) {
best = i;
best_val = abs(pdata->retune_mobile_cfgs[i].rate
- wm8904->fs);
}
}
dev_dbg(codec->dev, "ReTune Mobile %s/%dHz for %dHz sample rate\n",
pdata->retune_mobile_cfgs[best].name,
pdata->retune_mobile_cfgs[best].rate,
wm8904->fs);
/* The EQ will be disabled while reconfiguring it, remember the
* current configuration.
*/
save = snd_soc_read(codec, WM8904_EQ1);
for (i = 0; i < WM8904_EQ_REGS; i++)
snd_soc_update_bits(codec, WM8904_EQ1 + i, 0xffff,
pdata->retune_mobile_cfgs[best].regs[i]);
snd_soc_update_bits(codec, WM8904_EQ1, WM8904_EQ_ENA, save);
}
static int wm8904_put_retune_mobile_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = codec->private_data;
struct wm8904_pdata *pdata = wm8904->pdata;
int value = ucontrol->value.integer.value[0];
if (value >= pdata->num_retune_mobile_cfgs)
return -EINVAL;
wm8904->retune_mobile_cfg = value;
wm8904_set_retune_mobile(codec);
return 0;
}
static int wm8904_get_retune_mobile_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = codec->private_data;
ucontrol->value.enumerated.item[0] = wm8904->retune_mobile_cfg;
return 0;
}
static int deemph_settings[] = { 0, 32000, 44100, 48000 };
static int wm8904_set_deemph(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = codec->private_data;
int val, i, best;
/* If we're using deemphasis select the nearest available sample
* rate.
*/
if (wm8904->deemph) {
best = 1;
for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
if (abs(deemph_settings[i] - wm8904->fs) <
abs(deemph_settings[best] - wm8904->fs))
best = i;
}
val = best << WM8904_DEEMPH_SHIFT;
} else {
val = 0;
}
dev_dbg(codec->dev, "Set deemphasis %d\n", val);
return snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1,
WM8904_DEEMPH_MASK, val);
}
static int wm8904_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = codec->private_data;
return wm8904->deemph;
}
static int wm8904_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8904_priv *wm8904 = codec->private_data;
int deemph = ucontrol->value.enumerated.item[0];
if (deemph > 1)
return -EINVAL;
wm8904->deemph = deemph;
return wm8904_set_deemph(codec);
}
static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
static const char *input_mode_text[] = {
"Single-Ended", "Differential Line", "Differential Mic"
};
static const struct soc_enum lin_mode =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 0, 3, input_mode_text);
static const struct soc_enum rin_mode =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 0, 3, input_mode_text);
static const char *hpf_mode_text[] = {
"Hi-fi", "Voice 1", "Voice 2", "Voice 3"
};
static const struct soc_enum hpf_mode =
SOC_ENUM_SINGLE(WM8904_ADC_DIGITAL_0, 5, 4, hpf_mode_text);
static const struct snd_kcontrol_new wm8904_adc_snd_controls[] = {
SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8904_ADC_DIGITAL_VOLUME_LEFT,
WM8904_ADC_DIGITAL_VOLUME_RIGHT, 1, 119, 0, digital_tlv),
SOC_ENUM("Left Caputure Mode", lin_mode),
SOC_ENUM("Right Capture Mode", rin_mode),
/* No TLV since it depends on mode */
SOC_DOUBLE_R("Capture Volume", WM8904_ANALOGUE_LEFT_INPUT_0,
WM8904_ANALOGUE_RIGHT_INPUT_0, 0, 31, 0),
SOC_DOUBLE_R("Capture Switch", WM8904_ANALOGUE_LEFT_INPUT_0,
WM8904_ANALOGUE_RIGHT_INPUT_0, 7, 1, 0),
SOC_SINGLE("High Pass Filter Switch", WM8904_ADC_DIGITAL_0, 4, 1, 0),
SOC_ENUM("High Pass Filter Mode", hpf_mode),
SOC_SINGLE("ADC 128x OSR Switch", WM8904_ANALOGUE_ADC_0, 0, 1, 0),
};
static const char *drc_path_text[] = {
"ADC", "DAC"
};
static const struct soc_enum drc_path =
SOC_ENUM_SINGLE(WM8904_DRC_0, 14, 2, drc_path_text);
static const struct snd_kcontrol_new wm8904_dac_snd_controls[] = {
SOC_SINGLE_TLV("Digital Playback Boost Volume",
WM8904_AUDIO_INTERFACE_0, 9, 3, 0, dac_boost_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8904_DAC_DIGITAL_VOLUME_LEFT,
WM8904_DAC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
SOC_DOUBLE_R_TLV("Headphone Volume", WM8904_ANALOGUE_OUT1_LEFT,
WM8904_ANALOGUE_OUT1_RIGHT, 0, 63, 0, out_tlv),
SOC_DOUBLE_R("Headphone Switch", WM8904_ANALOGUE_OUT1_LEFT,
WM8904_ANALOGUE_OUT1_RIGHT, 8, 1, 1),
SOC_DOUBLE_R("Headphone ZC Switch", WM8904_ANALOGUE_OUT1_LEFT,
WM8904_ANALOGUE_OUT1_RIGHT, 6, 1, 0),
SOC_DOUBLE_R_TLV("Line Output Volume", WM8904_ANALOGUE_OUT2_LEFT,
WM8904_ANALOGUE_OUT2_RIGHT, 0, 63, 0, out_tlv),
SOC_DOUBLE_R("Line Output Switch", WM8904_ANALOGUE_OUT2_LEFT,
WM8904_ANALOGUE_OUT2_RIGHT, 8, 1, 1),
SOC_DOUBLE_R("Line Output ZC Switch", WM8904_ANALOGUE_OUT2_LEFT,
WM8904_ANALOGUE_OUT2_RIGHT, 6, 1, 0),
SOC_SINGLE("EQ Switch", WM8904_EQ1, 0, 1, 0),
SOC_SINGLE("DRC Switch", WM8904_DRC_0, 15, 1, 0),
SOC_ENUM("DRC Path", drc_path),
SOC_SINGLE("DAC OSRx2 Switch", WM8904_DAC_DIGITAL_1, 6, 1, 0),
SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
wm8904_get_deemph, wm8904_put_deemph),
};
static const struct snd_kcontrol_new wm8904_snd_controls[] = {
SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8904_DAC_DIGITAL_0, 4, 8, 15, 0,
sidetone_tlv),
};
static const struct snd_kcontrol_new wm8904_eq_controls[] = {
SOC_SINGLE_TLV("EQ1 Volume", WM8904_EQ2, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ2 Volume", WM8904_EQ3, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ3 Volume", WM8904_EQ4, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ4 Volume", WM8904_EQ5, 0, 24, 0, eq_tlv),
SOC_SINGLE_TLV("EQ5 Volume", WM8904_EQ6, 0, 24, 0, eq_tlv),
};
static int cp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
BUG_ON(event != SND_SOC_DAPM_POST_PMU);
/* Maximum startup time */
udelay(500);
return 0;
}
static int sysclk_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm8904_priv *wm8904 = codec->private_data;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* If we're using the FLL then we only start it when
* required; we assume that the configuration has been
* done previously and all we need to do is kick it
* off.
*/
switch (wm8904->sysclk_src) {
case WM8904_CLK_FLL:
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_OSC_ENA,
WM8904_FLL_OSC_ENA);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_ENA,
WM8904_FLL_ENA);
break;
default:
break;
}
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
break;
}
return 0;
}
static int out_pga_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm8904_priv *wm8904 = codec->private_data;
int reg, val;
int dcs_mask;
int dcs_l, dcs_r;
int dcs_l_reg, dcs_r_reg;
int timeout;
int pwr_reg;
/* This code is shared between HP and LINEOUT; we do all our
* power management in stereo pairs to avoid latency issues so
* we reuse shift to identify which rather than strcmp() the
* name. */
reg = w->shift;
switch (reg) {
case WM8904_ANALOGUE_HP_0:
pwr_reg = WM8904_POWER_MANAGEMENT_2;
dcs_mask = WM8904_DCS_ENA_CHAN_0 | WM8904_DCS_ENA_CHAN_1;
dcs_r_reg = WM8904_DC_SERVO_8;
dcs_l_reg = WM8904_DC_SERVO_9;
dcs_l = 0;
dcs_r = 1;
break;
case WM8904_ANALOGUE_LINEOUT_0:
pwr_reg = WM8904_POWER_MANAGEMENT_3;
dcs_mask = WM8904_DCS_ENA_CHAN_2 | WM8904_DCS_ENA_CHAN_3;
dcs_r_reg = WM8904_DC_SERVO_6;
dcs_l_reg = WM8904_DC_SERVO_7;
dcs_l = 2;
dcs_r = 3;
break;
default:
BUG();
return -EINVAL;
}
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* Power on the PGAs */
snd_soc_update_bits(codec, pwr_reg,
WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA,
WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA);
/* Power on the amplifier */
snd_soc_update_bits(codec, reg,
WM8904_HPL_ENA | WM8904_HPR_ENA,
WM8904_HPL_ENA | WM8904_HPR_ENA);
/* Enable the first stage */
snd_soc_update_bits(codec, reg,
WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY,
WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY);
/* Power up the DC servo */
snd_soc_update_bits(codec, WM8904_DC_SERVO_0,
dcs_mask, dcs_mask);
/* Either calibrate the DC servo or restore cached state
* if we have that.
*/
if (wm8904->dcs_state[dcs_l] || wm8904->dcs_state[dcs_r]) {
dev_dbg(codec->dev, "Restoring DC servo state\n");
snd_soc_write(codec, dcs_l_reg,
wm8904->dcs_state[dcs_l]);
snd_soc_write(codec, dcs_r_reg,
wm8904->dcs_state[dcs_r]);
snd_soc_write(codec, WM8904_DC_SERVO_1, dcs_mask);
timeout = 20;
} else {
dev_dbg(codec->dev, "Calibrating DC servo\n");
snd_soc_write(codec, WM8904_DC_SERVO_1,
dcs_mask << WM8904_DCS_TRIG_STARTUP_0_SHIFT);
timeout = 500;
}
/* Wait for DC servo to complete */
dcs_mask <<= WM8904_DCS_CAL_COMPLETE_SHIFT;
do {
val = snd_soc_read(codec, WM8904_DC_SERVO_READBACK_0);
if ((val & dcs_mask) == dcs_mask)
break;
msleep(1);
} while (--timeout);
if ((val & dcs_mask) != dcs_mask)
dev_warn(codec->dev, "DC servo timed out\n");
else
dev_dbg(codec->dev, "DC servo ready\n");
/* Enable the output stage */
snd_soc_update_bits(codec, reg,
WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP);
break;
case SND_SOC_DAPM_POST_PMU:
/* Unshort the output itself */
snd_soc_update_bits(codec, reg,
WM8904_HPL_RMV_SHORT |
WM8904_HPR_RMV_SHORT,
WM8904_HPL_RMV_SHORT |
WM8904_HPR_RMV_SHORT);
break;
case SND_SOC_DAPM_PRE_PMD:
/* Short the output */
snd_soc_update_bits(codec, reg,
WM8904_HPL_RMV_SHORT |
WM8904_HPR_RMV_SHORT, 0);
break;
case SND_SOC_DAPM_POST_PMD:
/* Cache the DC servo configuration; this will be
* invalidated if we change the configuration. */
wm8904->dcs_state[dcs_l] = snd_soc_read(codec, dcs_l_reg);
wm8904->dcs_state[dcs_r] = snd_soc_read(codec, dcs_r_reg);
snd_soc_update_bits(codec, WM8904_DC_SERVO_0,
dcs_mask, 0);
/* Disable the amplifier input and output stages */
snd_soc_update_bits(codec, reg,
WM8904_HPL_ENA | WM8904_HPR_ENA |
WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY |
WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
0);
/* PGAs too */
snd_soc_update_bits(codec, pwr_reg,
WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA,
0);
break;
}
return 0;
}
static const char *lin_text[] = {
"IN1L", "IN2L", "IN3L"
};
static const struct soc_enum lin_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 2, 3, lin_text);
static const struct snd_kcontrol_new lin_mux =
SOC_DAPM_ENUM("Left Capture Mux", lin_enum);
static const struct soc_enum lin_inv_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 4, 3, lin_text);
static const struct snd_kcontrol_new lin_inv_mux =
SOC_DAPM_ENUM("Left Capture Inveting Mux", lin_inv_enum);
static const char *rin_text[] = {
"IN1R", "IN2R", "IN3R"
};
static const struct soc_enum rin_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 2, 3, rin_text);
static const struct snd_kcontrol_new rin_mux =
SOC_DAPM_ENUM("Right Capture Mux", rin_enum);
static const struct soc_enum rin_inv_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 4, 3, rin_text);
static const struct snd_kcontrol_new rin_inv_mux =
SOC_DAPM_ENUM("Right Capture Inveting Mux", rin_inv_enum);
static const char *aif_text[] = {
"Left", "Right"
};
static const struct soc_enum aifoutl_enum =
SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 7, 2, aif_text);
static const struct snd_kcontrol_new aifoutl_mux =
SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
static const struct soc_enum aifoutr_enum =
SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 6, 2, aif_text);
static const struct snd_kcontrol_new aifoutr_mux =
SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
static const struct soc_enum aifinl_enum =
SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 5, 2, aif_text);
static const struct snd_kcontrol_new aifinl_mux =
SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
static const struct soc_enum aifinr_enum =
SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 4, 2, aif_text);
static const struct snd_kcontrol_new aifinr_mux =
SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
static const struct snd_soc_dapm_widget wm8904_core_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("SYSCLK", WM8904_CLOCK_RATES_2, 2, 0, sysclk_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8904_CLOCK_RATES_2, 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("TOCLK", WM8904_CLOCK_RATES_2, 0, 0, NULL, 0),
};
static const struct snd_soc_dapm_widget wm8904_adc_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("IN1L"),
SND_SOC_DAPM_INPUT("IN1R"),
SND_SOC_DAPM_INPUT("IN2L"),
SND_SOC_DAPM_INPUT("IN2R"),
SND_SOC_DAPM_INPUT("IN3L"),
SND_SOC_DAPM_INPUT("IN3R"),
SND_SOC_DAPM_MICBIAS("MICBIAS", WM8904_MIC_BIAS_CONTROL_0, 0, 0),
SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lin_mux),
SND_SOC_DAPM_MUX("Left Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
&lin_inv_mux),
SND_SOC_DAPM_MUX("Right Capture Mux", SND_SOC_NOPM, 0, 0, &rin_mux),
SND_SOC_DAPM_MUX("Right Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
&rin_inv_mux),
SND_SOC_DAPM_PGA("Left Capture PGA", WM8904_POWER_MANAGEMENT_0, 1, 0,
NULL, 0),
SND_SOC_DAPM_PGA("Right Capture PGA", WM8904_POWER_MANAGEMENT_0, 0, 0,
NULL, 0),
SND_SOC_DAPM_ADC("ADCL", NULL, WM8904_POWER_MANAGEMENT_6, 1, 0),
SND_SOC_DAPM_ADC("ADCR", NULL, WM8904_POWER_MANAGEMENT_6, 0, 0),
SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_widget wm8904_dac_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
SND_SOC_DAPM_DAC("DACL", NULL, WM8904_POWER_MANAGEMENT_6, 3, 0),
SND_SOC_DAPM_DAC("DACR", NULL, WM8904_POWER_MANAGEMENT_6, 2, 0),
SND_SOC_DAPM_SUPPLY("Charge pump", WM8904_CHARGE_PUMP_0, 0, 0, cp_event,
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA("HPL PGA", SND_SOC_NOPM, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("HPR PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("LINEL PGA", SND_SOC_NOPM, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("LINER PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM, WM8904_ANALOGUE_HP_0,
0, NULL, 0, out_pga_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA_E("Line Output", SND_SOC_NOPM, WM8904_ANALOGUE_LINEOUT_0,
0, NULL, 0, out_pga_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
SND_SOC_DAPM_OUTPUT("LINEOUTL"),
SND_SOC_DAPM_OUTPUT("LINEOUTR"),
};
static const char *out_mux_text[] = {
"DAC", "Bypass"
};
static const struct soc_enum hpl_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 3, 2, out_mux_text);
static const struct snd_kcontrol_new hpl_mux =
SOC_DAPM_ENUM("HPL Mux", hpl_enum);
static const struct soc_enum hpr_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 2, 2, out_mux_text);
static const struct snd_kcontrol_new hpr_mux =
SOC_DAPM_ENUM("HPR Mux", hpr_enum);
static const struct soc_enum linel_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 1, 2, out_mux_text);
static const struct snd_kcontrol_new linel_mux =
SOC_DAPM_ENUM("LINEL Mux", linel_enum);
static const struct soc_enum liner_enum =
SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 0, 2, out_mux_text);
static const struct snd_kcontrol_new liner_mux =
SOC_DAPM_ENUM("LINEL Mux", liner_enum);
static const char *sidetone_text[] = {
"None", "Left", "Right"
};
static const struct soc_enum dacl_sidetone_enum =
SOC_ENUM_SINGLE(WM8904_DAC_DIGITAL_0, 2, 3, sidetone_text);
static const struct snd_kcontrol_new dacl_sidetone_mux =
SOC_DAPM_ENUM("Left Sidetone Mux", dacl_sidetone_enum);
static const struct soc_enum dacr_sidetone_enum =
SOC_ENUM_SINGLE(WM8904_DAC_DIGITAL_0, 0, 3, sidetone_text);
static const struct snd_kcontrol_new dacr_sidetone_mux =
SOC_DAPM_ENUM("Right Sidetone Mux", dacr_sidetone_enum);
static const struct snd_soc_dapm_widget wm8904_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("Class G", WM8904_CLASS_W_0, 0, 1, NULL, 0),
SND_SOC_DAPM_PGA("Left Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_MUX("Left Sidetone", SND_SOC_NOPM, 0, 0, &dacl_sidetone_mux),
SND_SOC_DAPM_MUX("Right Sidetone", SND_SOC_NOPM, 0, 0, &dacr_sidetone_mux),
SND_SOC_DAPM_MUX("HPL Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
SND_SOC_DAPM_MUX("HPR Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
SND_SOC_DAPM_MUX("LINEL Mux", SND_SOC_NOPM, 0, 0, &linel_mux),
SND_SOC_DAPM_MUX("LINER Mux", SND_SOC_NOPM, 0, 0, &liner_mux),
};
static const struct snd_soc_dapm_route core_intercon[] = {
{ "CLK_DSP", NULL, "SYSCLK" },
{ "TOCLK", NULL, "SYSCLK" },
};
static const struct snd_soc_dapm_route adc_intercon[] = {
{ "Left Capture Mux", "IN1L", "IN1L" },
{ "Left Capture Mux", "IN2L", "IN2L" },
{ "Left Capture Mux", "IN3L", "IN3L" },
{ "Left Capture Inverting Mux", "IN1L", "IN1L" },
{ "Left Capture Inverting Mux", "IN2L", "IN2L" },
{ "Left Capture Inverting Mux", "IN3L", "IN3L" },
{ "Right Capture Mux", "IN1R", "IN1R" },
{ "Right Capture Mux", "IN2R", "IN2R" },
{ "Right Capture Mux", "IN3R", "IN3R" },
{ "Right Capture Inverting Mux", "IN1R", "IN1R" },
{ "Right Capture Inverting Mux", "IN2R", "IN2R" },
{ "Right Capture Inverting Mux", "IN3R", "IN3R" },
{ "Left Capture PGA", NULL, "Left Capture Mux" },
{ "Left Capture PGA", NULL, "Left Capture Inverting Mux" },
{ "Right Capture PGA", NULL, "Right Capture Mux" },
{ "Right Capture PGA", NULL, "Right Capture Inverting Mux" },
{ "AIFOUTL", "Left", "ADCL" },
{ "AIFOUTL", "Right", "ADCR" },
{ "AIFOUTR", "Left", "ADCL" },
{ "AIFOUTR", "Right", "ADCR" },
{ "ADCL", NULL, "CLK_DSP" },
{ "ADCL", NULL, "Left Capture PGA" },
{ "ADCR", NULL, "CLK_DSP" },
{ "ADCR", NULL, "Right Capture PGA" },
};
static const struct snd_soc_dapm_route dac_intercon[] = {
{ "DACL", "Right", "AIFINR" },
{ "DACL", "Left", "AIFINL" },
{ "DACL", NULL, "CLK_DSP" },
{ "DACR", "Right", "AIFINR" },
{ "DACR", "Left", "AIFINL" },
{ "DACR", NULL, "CLK_DSP" },
{ "Charge pump", NULL, "SYSCLK" },
{ "Headphone Output", NULL, "HPL PGA" },
{ "Headphone Output", NULL, "HPR PGA" },
{ "Headphone Output", NULL, "Charge pump" },
{ "Headphone Output", NULL, "TOCLK" },
{ "Line Output", NULL, "LINEL PGA" },
{ "Line Output", NULL, "LINER PGA" },
{ "Line Output", NULL, "Charge pump" },
{ "Line Output", NULL, "TOCLK" },
{ "HPOUTL", NULL, "Headphone Output" },
{ "HPOUTR", NULL, "Headphone Output" },
{ "LINEOUTL", NULL, "Line Output" },
{ "LINEOUTR", NULL, "Line Output" },
};
static const struct snd_soc_dapm_route wm8904_intercon[] = {
{ "Left Sidetone", "Left", "ADCL" },
{ "Left Sidetone", "Right", "ADCR" },
{ "DACL", NULL, "Left Sidetone" },
{ "Right Sidetone", "Left", "ADCL" },
{ "Right Sidetone", "Right", "ADCR" },
{ "DACR", NULL, "Right Sidetone" },
{ "Left Bypass", NULL, "Class G" },
{ "Left Bypass", NULL, "Left Capture PGA" },
{ "Right Bypass", NULL, "Class G" },
{ "Right Bypass", NULL, "Right Capture PGA" },
{ "HPL Mux", "DAC", "DACL" },
{ "HPL Mux", "Bypass", "Left Bypass" },
{ "HPR Mux", "DAC", "DACR" },
{ "HPR Mux", "Bypass", "Right Bypass" },
{ "LINEL Mux", "DAC", "DACL" },
{ "LINEL Mux", "Bypass", "Left Bypass" },
{ "LINER Mux", "DAC", "DACR" },
{ "LINER Mux", "Bypass", "Right Bypass" },
{ "HPL PGA", NULL, "HPL Mux" },
{ "HPR PGA", NULL, "HPR Mux" },
{ "LINEL PGA", NULL, "LINEL Mux" },
{ "LINER PGA", NULL, "LINER Mux" },
};
static const struct snd_soc_dapm_route wm8912_intercon[] = {
{ "HPL PGA", NULL, "DACL" },
{ "HPR PGA", NULL, "DACR" },
{ "LINEL PGA", NULL, "DACL" },
{ "LINER PGA", NULL, "DACR" },
};
static int wm8904_add_widgets(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = codec->private_data;
snd_soc_dapm_new_controls(codec, wm8904_core_dapm_widgets,
ARRAY_SIZE(wm8904_core_dapm_widgets));
snd_soc_dapm_add_routes(codec, core_intercon,
ARRAY_SIZE(core_intercon));
switch (wm8904->devtype) {
case WM8904:
snd_soc_add_controls(codec, wm8904_adc_snd_controls,
ARRAY_SIZE(wm8904_adc_snd_controls));
snd_soc_add_controls(codec, wm8904_dac_snd_controls,
ARRAY_SIZE(wm8904_dac_snd_controls));
snd_soc_add_controls(codec, wm8904_snd_controls,
ARRAY_SIZE(wm8904_snd_controls));
snd_soc_dapm_new_controls(codec, wm8904_adc_dapm_widgets,
ARRAY_SIZE(wm8904_adc_dapm_widgets));
snd_soc_dapm_new_controls(codec, wm8904_dac_dapm_widgets,
ARRAY_SIZE(wm8904_dac_dapm_widgets));
snd_soc_dapm_new_controls(codec, wm8904_dapm_widgets,
ARRAY_SIZE(wm8904_dapm_widgets));
snd_soc_dapm_add_routes(codec, core_intercon,
ARRAY_SIZE(core_intercon));
snd_soc_dapm_add_routes(codec, adc_intercon,
ARRAY_SIZE(adc_intercon));
snd_soc_dapm_add_routes(codec, dac_intercon,
ARRAY_SIZE(dac_intercon));
snd_soc_dapm_add_routes(codec, wm8904_intercon,
ARRAY_SIZE(wm8904_intercon));
break;
case WM8912:
snd_soc_add_controls(codec, wm8904_dac_snd_controls,
ARRAY_SIZE(wm8904_dac_snd_controls));
snd_soc_dapm_new_controls(codec, wm8904_dac_dapm_widgets,
ARRAY_SIZE(wm8904_dac_dapm_widgets));
snd_soc_dapm_add_routes(codec, dac_intercon,
ARRAY_SIZE(dac_intercon));
snd_soc_dapm_add_routes(codec, wm8912_intercon,
ARRAY_SIZE(wm8912_intercon));
break;
}
snd_soc_dapm_new_widgets(codec);
return 0;
}
static struct {
int ratio;
unsigned int clk_sys_rate;
} clk_sys_rates[] = {
{ 64, 0 },
{ 128, 1 },
{ 192, 2 },
{ 256, 3 },
{ 384, 4 },
{ 512, 5 },
{ 786, 6 },
{ 1024, 7 },
{ 1408, 8 },
{ 1536, 9 },
};
static struct {
int rate;
int sample_rate;
} sample_rates[] = {
{ 8000, 0 },
{ 11025, 1 },
{ 12000, 1 },
{ 16000, 2 },
{ 22050, 3 },
{ 24000, 3 },
{ 32000, 4 },
{ 44100, 5 },
{ 48000, 5 },
};
static struct {
int div; /* *10 due to .5s */
int bclk_div;
} bclk_divs[] = {
{ 10, 0 },
{ 15, 1 },
{ 20, 2 },
{ 30, 3 },
{ 40, 4 },
{ 50, 5 },
{ 55, 6 },
{ 60, 7 },
{ 80, 8 },
{ 100, 9 },
{ 110, 10 },
{ 120, 11 },
{ 160, 12 },
{ 200, 13 },
{ 220, 14 },
{ 240, 16 },
{ 200, 17 },
{ 320, 18 },
{ 440, 19 },
{ 480, 20 },
};
static int wm8904_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8904_priv *wm8904 = codec->private_data;
int ret, i, best, best_val, cur_val;
unsigned int aif1 = 0;
unsigned int aif2 = 0;
unsigned int aif3 = 0;
unsigned int clock1 = 0;
unsigned int dac_digital1 = 0;
/* What BCLK do we need? */
wm8904->fs = params_rate(params);
if (wm8904->tdm_slots) {
dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
wm8904->tdm_slots, wm8904->tdm_width);
wm8904->bclk = snd_soc_calc_bclk(wm8904->fs,
wm8904->tdm_width, 2,
wm8904->tdm_slots);
} else {
wm8904->bclk = snd_soc_params_to_bclk(params);
}
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
aif1 |= 0x40;
break;
case SNDRV_PCM_FORMAT_S24_LE:
aif1 |= 0x80;
break;
case SNDRV_PCM_FORMAT_S32_LE:
aif1 |= 0xc0;
break;
default:
return -EINVAL;
}
dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8904->bclk);
ret = wm8904_configure_clocking(codec);
if (ret != 0)
return ret;
/* Select nearest CLK_SYS_RATE */
best = 0;
best_val = abs((wm8904->sysclk_rate / clk_sys_rates[0].ratio)
- wm8904->fs);
for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
cur_val = abs((wm8904->sysclk_rate /
clk_sys_rates[i].ratio) - wm8904->fs);;
if (cur_val < best_val) {
best = i;
best_val = cur_val;
}
}
dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
clk_sys_rates[best].ratio);
clock1 |= (clk_sys_rates[best].clk_sys_rate
<< WM8904_CLK_SYS_RATE_SHIFT);
/* SAMPLE_RATE */
best = 0;
best_val = abs(wm8904->fs - sample_rates[0].rate);
for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
/* Closest match */
cur_val = abs(wm8904->fs - sample_rates[i].rate);
if (cur_val < best_val) {
best = i;
best_val = cur_val;
}
}
dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
sample_rates[best].rate);
clock1 |= (sample_rates[best].sample_rate
<< WM8904_SAMPLE_RATE_SHIFT);
/* Enable sloping stopband filter for low sample rates */
if (wm8904->fs <= 24000)
dac_digital1 |= WM8904_DAC_SB_FILT;
/* BCLK_DIV */
best = 0;
best_val = INT_MAX;
for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
cur_val = ((wm8904->sysclk_rate * 10) / bclk_divs[i].div)
- wm8904->bclk;
if (cur_val < 0) /* Table is sorted */
break;
if (cur_val < best_val) {
best = i;
best_val = cur_val;
}
}
wm8904->bclk = (wm8904->sysclk_rate * 10) / bclk_divs[best].div;
dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
bclk_divs[best].div, wm8904->bclk);
aif2 |= bclk_divs[best].bclk_div;
/* LRCLK is a simple fraction of BCLK */
dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8904->bclk / wm8904->fs);
aif3 |= wm8904->bclk / wm8904->fs;
/* Apply the settings */
snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1,
WM8904_DAC_SB_FILT, dac_digital1);
snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
WM8904_AIF_WL_MASK, aif1);
snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_2,
WM8904_BCLK_DIV_MASK, aif2);
snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_3,
WM8904_LRCLK_RATE_MASK, aif3);
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_1,
WM8904_SAMPLE_RATE_MASK |
WM8904_CLK_SYS_RATE_MASK, clock1);
/* Update filters for the new settings */
wm8904_set_retune_mobile(codec);
wm8904_set_deemph(codec);
return 0;
}
static int wm8904_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8904_priv *priv = codec->private_data;
switch (clk_id) {
case WM8904_CLK_MCLK:
priv->sysclk_src = clk_id;
priv->mclk_rate = freq;
break;
case WM8904_CLK_FLL:
priv->sysclk_src = clk_id;
break;
default:
return -EINVAL;
}
dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq);
wm8904_configure_clocking(codec);
return 0;
}
static int wm8904_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
unsigned int aif1 = 0;
unsigned int aif3 = 0;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBS_CFM:
aif3 |= WM8904_LRCLK_DIR;
break;
case SND_SOC_DAIFMT_CBM_CFS:
aif1 |= WM8904_BCLK_DIR;
break;
case SND_SOC_DAIFMT_CBM_CFM:
aif1 |= WM8904_BCLK_DIR;
aif3 |= WM8904_LRCLK_DIR;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_B:
aif1 |= WM8904_AIF_LRCLK_INV;
case SND_SOC_DAIFMT_DSP_A:
aif1 |= 0x3;
break;
case SND_SOC_DAIFMT_I2S:
aif1 |= 0x2;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
aif1 |= 0x1;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
case SND_SOC_DAIFMT_DSP_B:
/* frame inversion not valid for DSP modes */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8904_AIF_BCLK_INV;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
aif1 |= WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
aif1 |= WM8904_AIF_BCLK_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
aif1 |= WM8904_AIF_LRCLK_INV;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV |
WM8904_AIF_FMT_MASK | WM8904_BCLK_DIR, aif1);
snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_3,
WM8904_LRCLK_DIR, aif3);
return 0;
}
static int wm8904_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots, int slot_width)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8904_priv *wm8904 = codec->private_data;
int aif1 = 0;
/* Don't need to validate anything if we're turning off TDM */
if (slots == 0)
goto out;
/* Note that we allow configurations we can't handle ourselves -
* for example, we can generate clocks for slots 2 and up even if
* we can't use those slots ourselves.
*/
aif1 |= WM8904_AIFADC_TDM | WM8904_AIFDAC_TDM;
switch (rx_mask) {
case 3:
break;
case 0xc:
aif1 |= WM8904_AIFADC_TDM_CHAN;
break;
default:
return -EINVAL;
}
switch (tx_mask) {
case 3:
break;
case 0xc:
aif1 |= WM8904_AIFDAC_TDM_CHAN;
break;
default:
return -EINVAL;
}
out:
wm8904->tdm_width = slot_width;
wm8904->tdm_slots = slots / 2;
snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
WM8904_AIFADC_TDM | WM8904_AIFADC_TDM_CHAN |
WM8904_AIFDAC_TDM | WM8904_AIFDAC_TDM_CHAN, aif1);
return 0;
}
struct _fll_div {
u16 fll_fratio;
u16 fll_outdiv;
u16 fll_clk_ref_div;
u16 n;
u16 k;
};
/* The size in bits of the FLL divide multiplied by 10
* to allow rounding later */
#define FIXED_FLL_SIZE ((1 << 16) * 10)
static struct {
unsigned int min;
unsigned int max;
u16 fll_fratio;
int ratio;
} fll_fratios[] = {
{ 0, 64000, 4, 16 },
{ 64000, 128000, 3, 8 },
{ 128000, 256000, 2, 4 },
{ 256000, 1000000, 1, 2 },
{ 1000000, 13500000, 0, 1 },
};
static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
unsigned int Fout)
{
u64 Kpart;
unsigned int K, Ndiv, Nmod, target;
unsigned int div;
int i;
/* Fref must be <=13.5MHz */
div = 1;
fll_div->fll_clk_ref_div = 0;
while ((Fref / div) > 13500000) {
div *= 2;
fll_div->fll_clk_ref_div++;
if (div > 8) {
pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
Fref);
return -EINVAL;
}
}
pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
/* Apply the division for our remaining calculations */
Fref /= div;
/* Fvco should be 90-100MHz; don't check the upper bound */
div = 4;
while (Fout * div < 90000000) {
div++;
if (div > 64) {
pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
Fout);
return -EINVAL;
}
}
target = Fout * div;
fll_div->fll_outdiv = div - 1;
pr_debug("Fvco=%dHz\n", target);
/* Find an appropraite FLL_FRATIO and factor it out of the target */
for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
fll_div->fll_fratio = fll_fratios[i].fll_fratio;
target /= fll_fratios[i].ratio;
break;
}
}
if (i == ARRAY_SIZE(fll_fratios)) {
pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
return -EINVAL;
}
/* Now, calculate N.K */
Ndiv = target / Fref;
fll_div->n = Ndiv;
Nmod = target % Fref;
pr_debug("Nmod=%d\n", Nmod);
/* Calculate fractional part - scale up so we can round. */
Kpart = FIXED_FLL_SIZE * (long long)Nmod;
do_div(Kpart, Fref);
K = Kpart & 0xFFFFFFFF;
if ((K % 10) >= 5)
K += 5;
/* Move down to proper range now rounding is done */
fll_div->k = K / 10;
pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
fll_div->n, fll_div->k,
fll_div->fll_fratio, fll_div->fll_outdiv,
fll_div->fll_clk_ref_div);
return 0;
}
static int wm8904_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
unsigned int Fref, unsigned int Fout)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8904_priv *wm8904 = codec->private_data;
struct _fll_div fll_div;
int ret, val;
int clock2, fll1;
/* Any change? */
if (source == wm8904->fll_src && Fref == wm8904->fll_fref &&
Fout == wm8904->fll_fout)
return 0;
clock2 = snd_soc_read(codec, WM8904_CLOCK_RATES_2);
if (Fout == 0) {
dev_dbg(codec->dev, "FLL disabled\n");
wm8904->fll_fref = 0;
wm8904->fll_fout = 0;
/* Gate SYSCLK to avoid glitches */
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
WM8904_CLK_SYS_ENA, 0);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
goto out;
}
/* Validate the FLL ID */
switch (source) {
case WM8904_FLL_MCLK:
case WM8904_FLL_LRCLK:
case WM8904_FLL_BCLK:
ret = fll_factors(&fll_div, Fref, Fout);
if (ret != 0)
return ret;
break;
case WM8904_FLL_FREE_RUNNING:
dev_dbg(codec->dev, "Using free running FLL\n");
/* Force 12MHz and output/4 for now */
Fout = 12000000;
Fref = 12000000;
memset(&fll_div, 0, sizeof(fll_div));
fll_div.fll_outdiv = 3;
break;
default:
dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
return -EINVAL;
}
/* Save current state then disable the FLL and SYSCLK to avoid
* misclocking */
fll1 = snd_soc_read(codec, WM8904_FLL_CONTROL_1);
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
WM8904_CLK_SYS_ENA, 0);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
/* Unlock forced oscilator control to switch it on/off */
snd_soc_update_bits(codec, WM8904_CONTROL_INTERFACE_TEST_1,
WM8904_USER_KEY, WM8904_USER_KEY);
if (fll_id == WM8904_FLL_FREE_RUNNING) {
val = WM8904_FLL_FRC_NCO;
} else {
val = 0;
}
snd_soc_update_bits(codec, WM8904_FLL_NCO_TEST_1, WM8904_FLL_FRC_NCO,
val);
snd_soc_update_bits(codec, WM8904_CONTROL_INTERFACE_TEST_1,
WM8904_USER_KEY, 0);
switch (fll_id) {
case WM8904_FLL_MCLK:
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
WM8904_FLL_CLK_REF_SRC_MASK, 0);
break;
case WM8904_FLL_LRCLK:
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
WM8904_FLL_CLK_REF_SRC_MASK, 1);
break;
case WM8904_FLL_BCLK:
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
WM8904_FLL_CLK_REF_SRC_MASK, 2);
break;
}
if (fll_div.k)
val = WM8904_FLL_FRACN_ENA;
else
val = 0;
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_FRACN_ENA, val);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_2,
WM8904_FLL_OUTDIV_MASK | WM8904_FLL_FRATIO_MASK,
(fll_div.fll_outdiv << WM8904_FLL_OUTDIV_SHIFT) |
(fll_div.fll_fratio << WM8904_FLL_FRATIO_SHIFT));
snd_soc_write(codec, WM8904_FLL_CONTROL_3, fll_div.k);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_4, WM8904_FLL_N_MASK,
fll_div.n << WM8904_FLL_N_SHIFT);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
WM8904_FLL_CLK_REF_DIV_MASK,
fll_div.fll_clk_ref_div
<< WM8904_FLL_CLK_REF_DIV_SHIFT);
dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);
wm8904->fll_fref = Fref;
wm8904->fll_fout = Fout;
wm8904->fll_src = source;
/* Enable the FLL if it was previously active */
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_OSC_ENA, fll1);
snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
WM8904_FLL_ENA, fll1);
out:
/* Reenable SYSCLK if it was previously active */
snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
WM8904_CLK_SYS_ENA, clock2);
return 0;
}
static int wm8904_digital_mute(struct snd_soc_dai *codec_dai, int mute)
{
struct snd_soc_codec *codec = codec_dai->codec;
int val;
if (mute)
val = WM8904_DAC_MUTE;
else
val = 0;
snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1, WM8904_DAC_MUTE, val);
return 0;
}
static void wm8904_sync_cache(struct snd_soc_codec *codec)
{
struct wm8904_priv *wm8904 = codec->private_data;
int i;
if (!codec->cache_sync)
return;
codec->cache_only = 0;
/* Sync back cached values if they're different from the
* hardware default.
*/
for (i = 1; i < ARRAY_SIZE(wm8904->reg_cache); i++) {
if (!wm8904_access[i].writable)
continue;
if (wm8904->reg_cache[i] == wm8904_reg[i])
continue;
snd_soc_write(codec, i, wm8904->reg_cache[i]);
}
codec->cache_sync = 0;
}
static int wm8904_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8904_priv *wm8904 = codec->private_data;
int ret;
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
/* VMID resistance 2*50k */
snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
WM8904_VMID_RES_MASK,
0x1 << WM8904_VMID_RES_SHIFT);
/* Normal bias current */
snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
WM8904_ISEL_MASK, 2 << WM8904_ISEL_SHIFT);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(codec->dev,
"Failed to enable supplies: %d\n",
ret);
return ret;
}
wm8904_sync_cache(codec);
/* Enable bias */
snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
WM8904_BIAS_ENA, WM8904_BIAS_ENA);
/* Enable VMID, VMID buffering, 2*5k resistance */
snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
WM8904_VMID_ENA |
WM8904_VMID_RES_MASK,
WM8904_VMID_ENA |
0x3 << WM8904_VMID_RES_SHIFT);
/* Let VMID ramp */
msleep(1);
}
/* Maintain VMID with 2*250k */
snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
WM8904_VMID_RES_MASK,
0x2 << WM8904_VMID_RES_SHIFT);
/* Bias current *0.5 */
snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
WM8904_ISEL_MASK, 0);
break;
case SND_SOC_BIAS_OFF:
/* Turn off VMID */
snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
WM8904_VMID_RES_MASK | WM8904_VMID_ENA, 0);
/* Stop bias generation */
snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
WM8904_BIAS_ENA, 0);
#ifdef CONFIG_REGULATOR
/* Post 2.6.34 we will be able to get a callback when
* the regulators are disabled which we can use but
* for now just assume that the power will be cut if
* the regulator API is in use.
*/
codec->cache_sync = 1;
#endif
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
break;
}
codec->bias_level = level;
return 0;
}
#define WM8904_RATES SNDRV_PCM_RATE_8000_96000
#define WM8904_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_ops wm8904_dai_ops = {
.set_sysclk = wm8904_set_sysclk,
.set_fmt = wm8904_set_fmt,
.set_tdm_slot = wm8904_set_tdm_slot,
.set_pll = wm8904_set_fll,
.hw_params = wm8904_hw_params,
.digital_mute = wm8904_digital_mute,
};
struct snd_soc_dai wm8904_dai = {
.name = "WM8904",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = WM8904_RATES,
.formats = WM8904_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = WM8904_RATES,
.formats = WM8904_FORMATS,
},
.ops = &wm8904_dai_ops,
.symmetric_rates = 1,
};
EXPORT_SYMBOL_GPL(wm8904_dai);
#ifdef CONFIG_PM
static int wm8904_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;
wm8904_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8904_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
wm8904_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
#else
#define wm8904_suspend NULL
#define wm8904_resume NULL
#endif
static void wm8904_handle_retune_mobile_pdata(struct wm8904_priv *wm8904)
{
struct snd_soc_codec *codec = &wm8904->codec;
struct wm8904_pdata *pdata = wm8904->pdata;
struct snd_kcontrol_new control =
SOC_ENUM_EXT("EQ Mode",
wm8904->retune_mobile_enum,
wm8904_get_retune_mobile_enum,
wm8904_put_retune_mobile_enum);
int ret, i, j;
const char **t;
/* We need an array of texts for the enum API but the number
* of texts is likely to be less than the number of
* configurations due to the sample rate dependency of the
* configurations. */
wm8904->num_retune_mobile_texts = 0;
wm8904->retune_mobile_texts = NULL;
for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
for (j = 0; j < wm8904->num_retune_mobile_texts; j++) {
if (strcmp(pdata->retune_mobile_cfgs[i].name,
wm8904->retune_mobile_texts[j]) == 0)
break;
}
if (j != wm8904->num_retune_mobile_texts)
continue;
/* Expand the array... */
t = krealloc(wm8904->retune_mobile_texts,
sizeof(char *) *
(wm8904->num_retune_mobile_texts + 1),
GFP_KERNEL);
if (t == NULL)
continue;
/* ...store the new entry... */
t[wm8904->num_retune_mobile_texts] =
pdata->retune_mobile_cfgs[i].name;
/* ...and remember the new version. */
wm8904->num_retune_mobile_texts++;
wm8904->retune_mobile_texts = t;
}
dev_dbg(codec->dev, "Allocated %d unique ReTune Mobile names\n",
wm8904->num_retune_mobile_texts);
wm8904->retune_mobile_enum.max = wm8904->num_retune_mobile_texts;
wm8904->retune_mobile_enum.texts = wm8904->retune_mobile_texts;
ret = snd_soc_add_controls(&wm8904->codec, &control, 1);
if (ret != 0)
dev_err(wm8904->codec.dev,
"Failed to add ReTune Mobile control: %d\n", ret);
}
static void wm8904_handle_pdata(struct wm8904_priv *wm8904)
{
struct snd_soc_codec *codec = &wm8904->codec;
struct wm8904_pdata *pdata = wm8904->pdata;
int ret, i;
if (!pdata) {
snd_soc_add_controls(&wm8904->codec, wm8904_eq_controls,
ARRAY_SIZE(wm8904_eq_controls));
return;
}
dev_dbg(codec->dev, "%d DRC configurations\n", pdata->num_drc_cfgs);
if (pdata->num_drc_cfgs) {
struct snd_kcontrol_new control =
SOC_ENUM_EXT("DRC Mode", wm8904->drc_enum,
wm8904_get_drc_enum, wm8904_put_drc_enum);
/* We need an array of texts for the enum API */
wm8904->drc_texts = kmalloc(sizeof(char *)
* pdata->num_drc_cfgs, GFP_KERNEL);
if (!wm8904->drc_texts) {
dev_err(wm8904->codec.dev,
"Failed to allocate %d DRC config texts\n",
pdata->num_drc_cfgs);
return;
}
for (i = 0; i < pdata->num_drc_cfgs; i++)
wm8904->drc_texts[i] = pdata->drc_cfgs[i].name;
wm8904->drc_enum.max = pdata->num_drc_cfgs;
wm8904->drc_enum.texts = wm8904->drc_texts;
ret = snd_soc_add_controls(&wm8904->codec, &control, 1);
if (ret != 0)
dev_err(wm8904->codec.dev,
"Failed to add DRC mode control: %d\n", ret);
wm8904_set_drc(codec);
}
dev_dbg(codec->dev, "%d ReTune Mobile configurations\n",
pdata->num_retune_mobile_cfgs);
if (pdata->num_retune_mobile_cfgs)
wm8904_handle_retune_mobile_pdata(wm8904);
else
snd_soc_add_controls(&wm8904->codec, wm8904_eq_controls,
ARRAY_SIZE(wm8904_eq_controls));
}
static int wm8904_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
if (wm8904_codec == NULL) {
dev_err(&pdev->dev, "Codec device not registered\n");
return -ENODEV;
}
socdev->card->codec = wm8904_codec;
codec = wm8904_codec;
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
dev_err(codec->dev, "failed to create pcms: %d\n", ret);
goto pcm_err;
}
wm8904_handle_pdata(codec->private_data);
wm8904_add_widgets(codec);
return ret;
pcm_err:
return ret;
}
static int wm8904_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_wm8904 = {
.probe = wm8904_probe,
.remove = wm8904_remove,
.suspend = wm8904_suspend,
.resume = wm8904_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8904);
static int wm8904_register(struct wm8904_priv *wm8904,
enum snd_soc_control_type control)
{
struct wm8904_pdata *pdata = wm8904->pdata;
int ret;
struct snd_soc_codec *codec = &wm8904->codec;
int i;
if (wm8904_codec) {
dev_err(codec->dev, "Another WM8904 is registered\n");
return -EINVAL;
}
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
codec->private_data = wm8904;
codec->name = "WM8904";
codec->owner = THIS_MODULE;
codec->bias_level = SND_SOC_BIAS_OFF;
codec->set_bias_level = wm8904_set_bias_level;
codec->dai = &wm8904_dai;
codec->num_dai = 1;
codec->reg_cache_size = WM8904_MAX_REGISTER;
codec->reg_cache = &wm8904->reg_cache;
codec->volatile_register = wm8904_volatile_register;
codec->cache_sync = 1;
codec->idle_bias_off = 1;
switch (wm8904->devtype) {
case WM8904:
break;
case WM8912:
memset(&wm8904_dai.capture, 0, sizeof(wm8904_dai.capture));
break;
default:
dev_err(codec->dev, "Unknown device type %d\n",
wm8904->devtype);
return -EINVAL;
}
memcpy(codec->reg_cache, wm8904_reg, sizeof(wm8904_reg));
ret = snd_soc_codec_set_cache_io(codec, 8, 16, control);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
goto err;
}
for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
wm8904->supplies[i].supply = wm8904_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
goto err;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
wm8904->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_get;
}
ret = snd_soc_read(codec, WM8904_SW_RESET_AND_ID);
if (ret < 0) {
dev_err(codec->dev, "Failed to read ID register\n");
goto err_enable;
}
if (ret != wm8904_reg[WM8904_SW_RESET_AND_ID]) {
dev_err(codec->dev, "Device is not a WM8904, ID is %x\n", ret);
ret = -EINVAL;
goto err_enable;
}
ret = snd_soc_read(codec, WM8904_REVISION);
if (ret < 0) {
dev_err(codec->dev, "Failed to read device revision: %d\n",
ret);
goto err_enable;
}
dev_info(codec->dev, "revision %c\n", ret + 'A');
ret = wm8904_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
goto err_enable;
}
wm8904_dai.dev = codec->dev;
/* Change some default settings - latch VU and enable ZC */
wm8904->reg_cache[WM8904_ADC_DIGITAL_VOLUME_LEFT] |= WM8904_ADC_VU;
wm8904->reg_cache[WM8904_ADC_DIGITAL_VOLUME_RIGHT] |= WM8904_ADC_VU;
wm8904->reg_cache[WM8904_DAC_DIGITAL_VOLUME_LEFT] |= WM8904_DAC_VU;
wm8904->reg_cache[WM8904_DAC_DIGITAL_VOLUME_RIGHT] |= WM8904_DAC_VU;
wm8904->reg_cache[WM8904_ANALOGUE_OUT1_LEFT] |= WM8904_HPOUT_VU |
WM8904_HPOUTLZC;
wm8904->reg_cache[WM8904_ANALOGUE_OUT1_RIGHT] |= WM8904_HPOUT_VU |
WM8904_HPOUTRZC;
wm8904->reg_cache[WM8904_ANALOGUE_OUT2_LEFT] |= WM8904_LINEOUT_VU |
WM8904_LINEOUTLZC;
wm8904->reg_cache[WM8904_ANALOGUE_OUT2_RIGHT] |= WM8904_LINEOUT_VU |
WM8904_LINEOUTRZC;
wm8904->reg_cache[WM8904_CLOCK_RATES_0] &= ~WM8904_SR_MODE;
/* Apply configuration from the platform data. */
if (wm8904->pdata) {
for (i = 0; i < WM8904_GPIO_REGS; i++) {
if (!pdata->gpio_cfg[i])
continue;
wm8904->reg_cache[WM8904_GPIO_CONTROL_1 + i]
= pdata->gpio_cfg[i] & 0xffff;
}
/* Zero is the default value for these anyway */
for (i = 0; i < WM8904_MIC_REGS; i++)
wm8904->reg_cache[WM8904_MIC_BIAS_CONTROL_0 + i]
= pdata->mic_cfg[i];
}
/* Set Class W by default - this will be managed by the Class
* G widget at runtime where bypass paths are available.
*/
wm8904->reg_cache[WM8904_CLASS_W_0] |= WM8904_CP_DYN_PWR;
/* Use normal bias source */
wm8904->reg_cache[WM8904_BIAS_CONTROL_0] &= ~WM8904_POBCTRL;
wm8904_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Bias level configuration will have done an extra enable */
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
wm8904_codec = codec;
ret = snd_soc_register_codec(codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
return ret;
}
ret = snd_soc_register_dai(&wm8904_dai);
if (ret != 0) {
dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
snd_soc_unregister_codec(codec);
return ret;
}
return 0;
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
err_get:
regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
err:
kfree(wm8904);
return ret;
}
static void wm8904_unregister(struct wm8904_priv *wm8904)
{
wm8904_set_bias_level(&wm8904->codec, SND_SOC_BIAS_OFF);
regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
snd_soc_unregister_dai(&wm8904_dai);
snd_soc_unregister_codec(&wm8904->codec);
kfree(wm8904);
wm8904_codec = NULL;
}
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8904_priv *wm8904;
struct snd_soc_codec *codec;
wm8904 = kzalloc(sizeof(struct wm8904_priv), GFP_KERNEL);
if (wm8904 == NULL)
return -ENOMEM;
codec = &wm8904->codec;
codec->hw_write = (hw_write_t)i2c_master_send;
wm8904->devtype = id->driver_data;
i2c_set_clientdata(i2c, wm8904);
codec->control_data = i2c;
wm8904->pdata = i2c->dev.platform_data;
codec->dev = &i2c->dev;
return wm8904_register(wm8904, SND_SOC_I2C);
}
static __devexit int wm8904_i2c_remove(struct i2c_client *client)
{
struct wm8904_priv *wm8904 = i2c_get_clientdata(client);
wm8904_unregister(wm8904);
return 0;
}
static const struct i2c_device_id wm8904_i2c_id[] = {
{ "wm8904", WM8904 },
{ "wm8912", WM8912 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8904_i2c_id);
static struct i2c_driver wm8904_i2c_driver = {
.driver = {
.name = "WM8904",
.owner = THIS_MODULE,
},
.probe = wm8904_i2c_probe,
.remove = __devexit_p(wm8904_i2c_remove),
.id_table = wm8904_i2c_id,
};
#endif
static int __init wm8904_modinit(void)
{
int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8904_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8904 I2C driver: %d\n",
ret);
}
#endif
return 0;
}
module_init(wm8904_modinit);
static void __exit wm8904_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8904_i2c_driver);
#endif
}
module_exit(wm8904_exit);
MODULE_DESCRIPTION("ASoC WM8904 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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