| /* |
| * wm8961.c -- WM8961 ALSA SoC Audio driver |
| * |
| * Author: Mark Brown |
| * |
| * 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. |
| * |
| * Currently unimplemented features: |
| * - ALC |
| */ |
| |
| #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/slab.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/initval.h> |
| #include <sound/tlv.h> |
| |
| #include "wm8961.h" |
| |
| #define WM8961_MAX_REGISTER 0xFC |
| |
| static u16 wm8961_reg_defaults[] = { |
| 0x009F, /* R0 - Left Input volume */ |
| 0x009F, /* R1 - Right Input volume */ |
| 0x0000, /* R2 - LOUT1 volume */ |
| 0x0000, /* R3 - ROUT1 volume */ |
| 0x0020, /* R4 - Clocking1 */ |
| 0x0008, /* R5 - ADC & DAC Control 1 */ |
| 0x0000, /* R6 - ADC & DAC Control 2 */ |
| 0x000A, /* R7 - Audio Interface 0 */ |
| 0x01F4, /* R8 - Clocking2 */ |
| 0x0000, /* R9 - Audio Interface 1 */ |
| 0x00FF, /* R10 - Left DAC volume */ |
| 0x00FF, /* R11 - Right DAC volume */ |
| 0x0000, /* R12 */ |
| 0x0000, /* R13 */ |
| 0x0040, /* R14 - Audio Interface 2 */ |
| 0x0000, /* R15 - Software Reset */ |
| 0x0000, /* R16 */ |
| 0x007B, /* R17 - ALC1 */ |
| 0x0000, /* R18 - ALC2 */ |
| 0x0032, /* R19 - ALC3 */ |
| 0x0000, /* R20 - Noise Gate */ |
| 0x00C0, /* R21 - Left ADC volume */ |
| 0x00C0, /* R22 - Right ADC volume */ |
| 0x0120, /* R23 - Additional control(1) */ |
| 0x0000, /* R24 - Additional control(2) */ |
| 0x0000, /* R25 - Pwr Mgmt (1) */ |
| 0x0000, /* R26 - Pwr Mgmt (2) */ |
| 0x0000, /* R27 - Additional Control (3) */ |
| 0x0000, /* R28 - Anti-pop */ |
| 0x0000, /* R29 */ |
| 0x005F, /* R30 - Clocking 3 */ |
| 0x0000, /* R31 */ |
| 0x0000, /* R32 - ADCL signal path */ |
| 0x0000, /* R33 - ADCR signal path */ |
| 0x0000, /* R34 */ |
| 0x0000, /* R35 */ |
| 0x0000, /* R36 */ |
| 0x0000, /* R37 */ |
| 0x0000, /* R38 */ |
| 0x0000, /* R39 */ |
| 0x0000, /* R40 - LOUT2 volume */ |
| 0x0000, /* R41 - ROUT2 volume */ |
| 0x0000, /* R42 */ |
| 0x0000, /* R43 */ |
| 0x0000, /* R44 */ |
| 0x0000, /* R45 */ |
| 0x0000, /* R46 */ |
| 0x0000, /* R47 - Pwr Mgmt (3) */ |
| 0x0023, /* R48 - Additional Control (4) */ |
| 0x0000, /* R49 - Class D Control 1 */ |
| 0x0000, /* R50 */ |
| 0x0003, /* R51 - Class D Control 2 */ |
| 0x0000, /* R52 */ |
| 0x0000, /* R53 */ |
| 0x0000, /* R54 */ |
| 0x0000, /* R55 */ |
| 0x0106, /* R56 - Clocking 4 */ |
| 0x0000, /* R57 - DSP Sidetone 0 */ |
| 0x0000, /* R58 - DSP Sidetone 1 */ |
| 0x0000, /* R59 */ |
| 0x0000, /* R60 - DC Servo 0 */ |
| 0x0000, /* R61 - DC Servo 1 */ |
| 0x0000, /* R62 */ |
| 0x015E, /* R63 - DC Servo 3 */ |
| 0x0010, /* R64 */ |
| 0x0010, /* R65 - DC Servo 5 */ |
| 0x0000, /* R66 */ |
| 0x0001, /* R67 */ |
| 0x0003, /* R68 - Analogue PGA Bias */ |
| 0x0000, /* R69 - Analogue HP 0 */ |
| 0x0060, /* R70 */ |
| 0x01FB, /* R71 - Analogue HP 2 */ |
| 0x0000, /* R72 - Charge Pump 1 */ |
| 0x0065, /* R73 */ |
| 0x005F, /* R74 */ |
| 0x0059, /* R75 */ |
| 0x006B, /* R76 */ |
| 0x0038, /* R77 */ |
| 0x000C, /* R78 */ |
| 0x000A, /* R79 */ |
| 0x006B, /* R80 */ |
| 0x0000, /* R81 */ |
| 0x0000, /* R82 - Charge Pump B */ |
| 0x0087, /* R83 */ |
| 0x0000, /* R84 */ |
| 0x005C, /* R85 */ |
| 0x0000, /* R86 */ |
| 0x0000, /* R87 - Write Sequencer 1 */ |
| 0x0000, /* R88 - Write Sequencer 2 */ |
| 0x0000, /* R89 - Write Sequencer 3 */ |
| 0x0000, /* R90 - Write Sequencer 4 */ |
| 0x0000, /* R91 - Write Sequencer 5 */ |
| 0x0000, /* R92 - Write Sequencer 6 */ |
| 0x0000, /* R93 - Write Sequencer 7 */ |
| 0x0000, /* R94 */ |
| 0x0000, /* R95 */ |
| 0x0000, /* R96 */ |
| 0x0000, /* R97 */ |
| 0x0000, /* R98 */ |
| 0x0000, /* R99 */ |
| 0x0000, /* R100 */ |
| 0x0000, /* R101 */ |
| 0x0000, /* R102 */ |
| 0x0000, /* R103 */ |
| 0x0000, /* R104 */ |
| 0x0000, /* R105 */ |
| 0x0000, /* R106 */ |
| 0x0000, /* R107 */ |
| 0x0000, /* R108 */ |
| 0x0000, /* R109 */ |
| 0x0000, /* R110 */ |
| 0x0000, /* R111 */ |
| 0x0000, /* R112 */ |
| 0x0000, /* R113 */ |
| 0x0000, /* R114 */ |
| 0x0000, /* R115 */ |
| 0x0000, /* R116 */ |
| 0x0000, /* R117 */ |
| 0x0000, /* R118 */ |
| 0x0000, /* R119 */ |
| 0x0000, /* R120 */ |
| 0x0000, /* R121 */ |
| 0x0000, /* R122 */ |
| 0x0000, /* R123 */ |
| 0x0000, /* R124 */ |
| 0x0000, /* R125 */ |
| 0x0000, /* R126 */ |
| 0x0000, /* R127 */ |
| 0x0000, /* R128 */ |
| 0x0000, /* R129 */ |
| 0x0000, /* R130 */ |
| 0x0000, /* R131 */ |
| 0x0000, /* R132 */ |
| 0x0000, /* R133 */ |
| 0x0000, /* R134 */ |
| 0x0000, /* R135 */ |
| 0x0000, /* R136 */ |
| 0x0000, /* R137 */ |
| 0x0000, /* R138 */ |
| 0x0000, /* R139 */ |
| 0x0000, /* R140 */ |
| 0x0000, /* R141 */ |
| 0x0000, /* R142 */ |
| 0x0000, /* R143 */ |
| 0x0000, /* R144 */ |
| 0x0000, /* R145 */ |
| 0x0000, /* R146 */ |
| 0x0000, /* R147 */ |
| 0x0000, /* R148 */ |
| 0x0000, /* R149 */ |
| 0x0000, /* R150 */ |
| 0x0000, /* R151 */ |
| 0x0000, /* R152 */ |
| 0x0000, /* R153 */ |
| 0x0000, /* R154 */ |
| 0x0000, /* R155 */ |
| 0x0000, /* R156 */ |
| 0x0000, /* R157 */ |
| 0x0000, /* R158 */ |
| 0x0000, /* R159 */ |
| 0x0000, /* R160 */ |
| 0x0000, /* R161 */ |
| 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 */ |
| 0x0030, /* R196 */ |
| 0x0006, /* R197 */ |
| 0x0000, /* R198 */ |
| 0x0060, /* R199 */ |
| 0x0000, /* R200 */ |
| 0x003F, /* R201 */ |
| 0x0000, /* R202 */ |
| 0x0000, /* R203 */ |
| 0x0000, /* R204 */ |
| 0x0001, /* R205 */ |
| 0x0000, /* R206 */ |
| 0x0181, /* R207 */ |
| 0x0005, /* R208 */ |
| 0x0008, /* R209 */ |
| 0x0008, /* R210 */ |
| 0x0000, /* R211 */ |
| 0x013B, /* R212 */ |
| 0x0000, /* R213 */ |
| 0x0000, /* R214 */ |
| 0x0000, /* R215 */ |
| 0x0000, /* R216 */ |
| 0x0070, /* R217 */ |
| 0x0000, /* R218 */ |
| 0x0000, /* R219 */ |
| 0x0000, /* R220 */ |
| 0x0000, /* R221 */ |
| 0x0000, /* R222 */ |
| 0x0003, /* R223 */ |
| 0x0000, /* R224 */ |
| 0x0000, /* R225 */ |
| 0x0001, /* R226 */ |
| 0x0008, /* R227 */ |
| 0x0000, /* R228 */ |
| 0x0000, /* R229 */ |
| 0x0000, /* R230 */ |
| 0x0000, /* R231 */ |
| 0x0004, /* R232 */ |
| 0x0000, /* R233 */ |
| 0x0000, /* R234 */ |
| 0x0000, /* R235 */ |
| 0x0000, /* R236 */ |
| 0x0000, /* R237 */ |
| 0x0080, /* R238 */ |
| 0x0000, /* R239 */ |
| 0x0000, /* R240 */ |
| 0x0000, /* R241 */ |
| 0x0000, /* R242 */ |
| 0x0000, /* R243 */ |
| 0x0000, /* R244 */ |
| 0x0052, /* R245 */ |
| 0x0110, /* R246 */ |
| 0x0040, /* R247 */ |
| 0x0000, /* R248 */ |
| 0x0030, /* R249 */ |
| 0x0000, /* R250 */ |
| 0x0000, /* R251 */ |
| 0x0001, /* R252 - General test 1 */ |
| }; |
| |
| struct wm8961_priv { |
| enum snd_soc_control_type control_type; |
| int sysclk; |
| }; |
| |
| static int wm8961_volatile_register(struct snd_soc_codec *codec, unsigned int reg) |
| { |
| switch (reg) { |
| case WM8961_SOFTWARE_RESET: |
| case WM8961_WRITE_SEQUENCER_7: |
| case WM8961_DC_SERVO_1: |
| return 1; |
| |
| default: |
| return 0; |
| } |
| } |
| |
| static int wm8961_reset(struct snd_soc_codec *codec) |
| { |
| return snd_soc_write(codec, WM8961_SOFTWARE_RESET, 0); |
| } |
| |
| /* |
| * The headphone output supports special anti-pop sequences giving |
| * silent power up and power down. |
| */ |
| static int wm8961_hp_event(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *kcontrol, int event) |
| { |
| struct snd_soc_codec *codec = w->codec; |
| u16 hp_reg = snd_soc_read(codec, WM8961_ANALOGUE_HP_0); |
| u16 cp_reg = snd_soc_read(codec, WM8961_CHARGE_PUMP_1); |
| u16 pwr_reg = snd_soc_read(codec, WM8961_PWR_MGMT_2); |
| u16 dcs_reg = snd_soc_read(codec, WM8961_DC_SERVO_1); |
| int timeout = 500; |
| |
| if (event & SND_SOC_DAPM_POST_PMU) { |
| /* Make sure the output is shorted */ |
| hp_reg &= ~(WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT); |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Enable the charge pump */ |
| cp_reg |= WM8961_CP_ENA; |
| snd_soc_write(codec, WM8961_CHARGE_PUMP_1, cp_reg); |
| mdelay(5); |
| |
| /* Enable the PGA */ |
| pwr_reg |= WM8961_LOUT1_PGA | WM8961_ROUT1_PGA; |
| snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg); |
| |
| /* Enable the amplifier */ |
| hp_reg |= WM8961_HPR_ENA | WM8961_HPL_ENA; |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Second stage enable */ |
| hp_reg |= WM8961_HPR_ENA_DLY | WM8961_HPL_ENA_DLY; |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Enable the DC servo & trigger startup */ |
| dcs_reg |= |
| WM8961_DCS_ENA_CHAN_HPR | WM8961_DCS_TRIG_STARTUP_HPR | |
| WM8961_DCS_ENA_CHAN_HPL | WM8961_DCS_TRIG_STARTUP_HPL; |
| dev_dbg(codec->dev, "Enabling DC servo\n"); |
| |
| snd_soc_write(codec, WM8961_DC_SERVO_1, dcs_reg); |
| do { |
| msleep(1); |
| dcs_reg = snd_soc_read(codec, WM8961_DC_SERVO_1); |
| } while (--timeout && |
| dcs_reg & (WM8961_DCS_TRIG_STARTUP_HPR | |
| WM8961_DCS_TRIG_STARTUP_HPL)); |
| if (dcs_reg & (WM8961_DCS_TRIG_STARTUP_HPR | |
| WM8961_DCS_TRIG_STARTUP_HPL)) |
| dev_err(codec->dev, "DC servo timed out\n"); |
| else |
| dev_dbg(codec->dev, "DC servo startup complete\n"); |
| |
| /* Enable the output stage */ |
| hp_reg |= WM8961_HPR_ENA_OUTP | WM8961_HPL_ENA_OUTP; |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Remove the short on the output stage */ |
| hp_reg |= WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT; |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| } |
| |
| if (event & SND_SOC_DAPM_PRE_PMD) { |
| /* Short the output */ |
| hp_reg &= ~(WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT); |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Disable the output stage */ |
| hp_reg &= ~(WM8961_HPR_ENA_OUTP | WM8961_HPL_ENA_OUTP); |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Disable DC offset cancellation */ |
| dcs_reg &= ~(WM8961_DCS_ENA_CHAN_HPR | |
| WM8961_DCS_ENA_CHAN_HPL); |
| snd_soc_write(codec, WM8961_DC_SERVO_1, dcs_reg); |
| |
| /* Finish up */ |
| hp_reg &= ~(WM8961_HPR_ENA_DLY | WM8961_HPR_ENA | |
| WM8961_HPL_ENA_DLY | WM8961_HPL_ENA); |
| snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg); |
| |
| /* Disable the PGA */ |
| pwr_reg &= ~(WM8961_LOUT1_PGA | WM8961_ROUT1_PGA); |
| snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg); |
| |
| /* Disable the charge pump */ |
| dev_dbg(codec->dev, "Disabling charge pump\n"); |
| snd_soc_write(codec, WM8961_CHARGE_PUMP_1, |
| cp_reg & ~WM8961_CP_ENA); |
| } |
| |
| return 0; |
| } |
| |
| static int wm8961_spk_event(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *kcontrol, int event) |
| { |
| struct snd_soc_codec *codec = w->codec; |
| u16 pwr_reg = snd_soc_read(codec, WM8961_PWR_MGMT_2); |
| u16 spk_reg = snd_soc_read(codec, WM8961_CLASS_D_CONTROL_1); |
| |
| if (event & SND_SOC_DAPM_POST_PMU) { |
| /* Enable the PGA */ |
| pwr_reg |= WM8961_SPKL_PGA | WM8961_SPKR_PGA; |
| snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg); |
| |
| /* Enable the amplifier */ |
| spk_reg |= WM8961_SPKL_ENA | WM8961_SPKR_ENA; |
| snd_soc_write(codec, WM8961_CLASS_D_CONTROL_1, spk_reg); |
| } |
| |
| if (event & SND_SOC_DAPM_PRE_PMD) { |
| /* Disable the amplifier */ |
| spk_reg &= ~(WM8961_SPKL_ENA | WM8961_SPKR_ENA); |
| snd_soc_write(codec, WM8961_CLASS_D_CONTROL_1, spk_reg); |
| |
| /* Disable the PGA */ |
| pwr_reg &= ~(WM8961_SPKL_PGA | WM8961_SPKR_PGA); |
| snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg); |
| } |
| |
| return 0; |
| } |
| |
| static const char *adc_hpf_text[] = { |
| "Hi-fi", "Voice 1", "Voice 2", "Voice 3", |
| }; |
| |
| static const struct soc_enum adc_hpf = |
| SOC_ENUM_SINGLE(WM8961_ADC_DAC_CONTROL_2, 7, 4, adc_hpf_text); |
| |
| static const char *dac_deemph_text[] = { |
| "None", "32kHz", "44.1kHz", "48kHz", |
| }; |
| |
| static const struct soc_enum dac_deemph = |
| SOC_ENUM_SINGLE(WM8961_ADC_DAC_CONTROL_1, 1, 4, dac_deemph_text); |
| |
| static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); |
| static const DECLARE_TLV_DB_SCALE(hp_sec_tlv, -700, 100, 0); |
| static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1); |
| static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0); |
| static unsigned int boost_tlv[] = { |
| TLV_DB_RANGE_HEAD(4), |
| 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0), |
| 1, 1, TLV_DB_SCALE_ITEM(13, 0, 0), |
| 2, 2, TLV_DB_SCALE_ITEM(20, 0, 0), |
| 3, 3, TLV_DB_SCALE_ITEM(29, 0, 0), |
| }; |
| static const DECLARE_TLV_DB_SCALE(pga_tlv, -2325, 75, 0); |
| |
| static const struct snd_kcontrol_new wm8961_snd_controls[] = { |
| SOC_DOUBLE_R_TLV("Headphone Volume", WM8961_LOUT1_VOLUME, WM8961_ROUT1_VOLUME, |
| 0, 127, 0, out_tlv), |
| SOC_DOUBLE_TLV("Headphone Secondary Volume", WM8961_ANALOGUE_HP_2, |
| 6, 3, 7, 0, hp_sec_tlv), |
| SOC_DOUBLE_R("Headphone ZC Switch", WM8961_LOUT1_VOLUME, WM8961_ROUT1_VOLUME, |
| 7, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("Speaker Volume", WM8961_LOUT2_VOLUME, WM8961_ROUT2_VOLUME, |
| 0, 127, 0, out_tlv), |
| SOC_DOUBLE_R("Speaker ZC Switch", WM8961_LOUT2_VOLUME, WM8961_ROUT2_VOLUME, |
| 7, 1, 0), |
| SOC_SINGLE("Speaker AC Gain", WM8961_CLASS_D_CONTROL_2, 0, 7, 0), |
| |
| SOC_SINGLE("DAC x128 OSR Switch", WM8961_ADC_DAC_CONTROL_2, 0, 1, 0), |
| SOC_ENUM("DAC Deemphasis", dac_deemph), |
| SOC_SINGLE("DAC Soft Mute Switch", WM8961_ADC_DAC_CONTROL_2, 3, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("Sidetone Volume", WM8961_DSP_SIDETONE_0, |
| WM8961_DSP_SIDETONE_1, 4, 12, 0, sidetone_tlv), |
| |
| SOC_SINGLE("ADC High Pass Filter Switch", WM8961_ADC_DAC_CONTROL_1, 0, 1, 0), |
| SOC_ENUM("ADC High Pass Filter Mode", adc_hpf), |
| |
| SOC_DOUBLE_R_TLV("Capture Volume", |
| WM8961_LEFT_ADC_VOLUME, WM8961_RIGHT_ADC_VOLUME, |
| 1, 119, 0, adc_tlv), |
| SOC_DOUBLE_R_TLV("Capture Boost Volume", |
| WM8961_ADCL_SIGNAL_PATH, WM8961_ADCR_SIGNAL_PATH, |
| 4, 3, 0, boost_tlv), |
| SOC_DOUBLE_R_TLV("Capture PGA Volume", |
| WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME, |
| 0, 62, 0, pga_tlv), |
| SOC_DOUBLE_R("Capture PGA ZC Switch", |
| WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME, |
| 6, 1, 1), |
| SOC_DOUBLE_R("Capture PGA Switch", |
| WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME, |
| 7, 1, 1), |
| }; |
| |
| static const char *sidetone_text[] = { |
| "None", "Left", "Right" |
| }; |
| |
| static const struct soc_enum dacl_sidetone = |
| SOC_ENUM_SINGLE(WM8961_DSP_SIDETONE_0, 2, 3, sidetone_text); |
| |
| static const struct soc_enum dacr_sidetone = |
| SOC_ENUM_SINGLE(WM8961_DSP_SIDETONE_1, 2, 3, sidetone_text); |
| |
| static const struct snd_kcontrol_new dacl_mux = |
| SOC_DAPM_ENUM("DACL Sidetone", dacl_sidetone); |
| |
| static const struct snd_kcontrol_new dacr_mux = |
| SOC_DAPM_ENUM("DACR Sidetone", dacr_sidetone); |
| |
| static const struct snd_soc_dapm_widget wm8961_dapm_widgets[] = { |
| SND_SOC_DAPM_INPUT("LINPUT"), |
| SND_SOC_DAPM_INPUT("RINPUT"), |
| |
| SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8961_CLOCKING2, 4, 0, NULL, 0), |
| |
| SND_SOC_DAPM_PGA("Left Input", WM8961_PWR_MGMT_1, 5, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Right Input", WM8961_PWR_MGMT_1, 4, 0, NULL, 0), |
| |
| SND_SOC_DAPM_ADC("ADCL", "HiFi Capture", WM8961_PWR_MGMT_1, 3, 0), |
| SND_SOC_DAPM_ADC("ADCR", "HiFi Capture", WM8961_PWR_MGMT_1, 2, 0), |
| |
| SND_SOC_DAPM_SUPPLY("MICBIAS", WM8961_PWR_MGMT_1, 1, 0, NULL, 0), |
| |
| SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &dacl_mux), |
| SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &dacr_mux), |
| |
| SND_SOC_DAPM_DAC("DACL", "HiFi Playback", WM8961_PWR_MGMT_2, 8, 0), |
| SND_SOC_DAPM_DAC("DACR", "HiFi Playback", WM8961_PWR_MGMT_2, 7, 0), |
| |
| /* Handle as a mono path for DCS */ |
| SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM, |
| 4, 0, NULL, 0, wm8961_hp_event, |
| SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), |
| SND_SOC_DAPM_PGA_E("Speaker Output", SND_SOC_NOPM, |
| 4, 0, NULL, 0, wm8961_spk_event, |
| SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), |
| |
| SND_SOC_DAPM_OUTPUT("HP_L"), |
| SND_SOC_DAPM_OUTPUT("HP_R"), |
| SND_SOC_DAPM_OUTPUT("SPK_LN"), |
| SND_SOC_DAPM_OUTPUT("SPK_LP"), |
| SND_SOC_DAPM_OUTPUT("SPK_RN"), |
| SND_SOC_DAPM_OUTPUT("SPK_RP"), |
| }; |
| |
| |
| static const struct snd_soc_dapm_route audio_paths[] = { |
| { "DACL", NULL, "CLK_DSP" }, |
| { "DACL", NULL, "DACL Sidetone" }, |
| { "DACR", NULL, "CLK_DSP" }, |
| { "DACR", NULL, "DACR Sidetone" }, |
| |
| { "DACL Sidetone", "Left", "ADCL" }, |
| { "DACL Sidetone", "Right", "ADCR" }, |
| |
| { "DACR Sidetone", "Left", "ADCL" }, |
| { "DACR Sidetone", "Right", "ADCR" }, |
| |
| { "HP_L", NULL, "Headphone Output" }, |
| { "HP_R", NULL, "Headphone Output" }, |
| { "Headphone Output", NULL, "DACL" }, |
| { "Headphone Output", NULL, "DACR" }, |
| |
| { "SPK_LN", NULL, "Speaker Output" }, |
| { "SPK_LP", NULL, "Speaker Output" }, |
| { "SPK_RN", NULL, "Speaker Output" }, |
| { "SPK_RP", NULL, "Speaker Output" }, |
| |
| { "Speaker Output", NULL, "DACL" }, |
| { "Speaker Output", NULL, "DACR" }, |
| |
| { "ADCL", NULL, "Left Input" }, |
| { "ADCL", NULL, "CLK_DSP" }, |
| { "ADCR", NULL, "Right Input" }, |
| { "ADCR", NULL, "CLK_DSP" }, |
| |
| { "Left Input", NULL, "LINPUT" }, |
| { "Right Input", NULL, "RINPUT" }, |
| |
| }; |
| |
| /* Values for CLK_SYS_RATE */ |
| static struct { |
| int ratio; |
| u16 val; |
| } wm8961_clk_sys_ratio[] = { |
| { 64, 0 }, |
| { 128, 1 }, |
| { 192, 2 }, |
| { 256, 3 }, |
| { 384, 4 }, |
| { 512, 5 }, |
| { 768, 6 }, |
| { 1024, 7 }, |
| { 1408, 8 }, |
| { 1536, 9 }, |
| }; |
| |
| /* Values for SAMPLE_RATE */ |
| static struct { |
| int rate; |
| u16 val; |
| } wm8961_srate[] = { |
| { 48000, 0 }, |
| { 44100, 0 }, |
| { 32000, 1 }, |
| { 22050, 2 }, |
| { 24000, 2 }, |
| { 16000, 3 }, |
| { 11250, 4 }, |
| { 12000, 4 }, |
| { 8000, 5 }, |
| }; |
| |
| static int wm8961_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 wm8961_priv *wm8961 = snd_soc_codec_get_drvdata(codec); |
| int i, best, target, fs; |
| u16 reg; |
| |
| fs = params_rate(params); |
| |
| if (!wm8961->sysclk) { |
| dev_err(codec->dev, "MCLK has not been specified\n"); |
| return -EINVAL; |
| } |
| |
| /* Find the closest sample rate for the filters */ |
| best = 0; |
| for (i = 0; i < ARRAY_SIZE(wm8961_srate); i++) { |
| if (abs(wm8961_srate[i].rate - fs) < |
| abs(wm8961_srate[best].rate - fs)) |
| best = i; |
| } |
| reg = snd_soc_read(codec, WM8961_ADDITIONAL_CONTROL_3); |
| reg &= ~WM8961_SAMPLE_RATE_MASK; |
| reg |= wm8961_srate[best].val; |
| snd_soc_write(codec, WM8961_ADDITIONAL_CONTROL_3, reg); |
| dev_dbg(codec->dev, "Selected SRATE %dHz for %dHz\n", |
| wm8961_srate[best].rate, fs); |
| |
| /* Select a CLK_SYS/fs ratio equal to or higher than required */ |
| target = wm8961->sysclk / fs; |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && target < 64) { |
| dev_err(codec->dev, |
| "SYSCLK must be at least 64*fs for DAC\n"); |
| return -EINVAL; |
| } |
| if (substream->stream == SNDRV_PCM_STREAM_CAPTURE && target < 256) { |
| dev_err(codec->dev, |
| "SYSCLK must be at least 256*fs for ADC\n"); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(wm8961_clk_sys_ratio); i++) { |
| if (wm8961_clk_sys_ratio[i].ratio >= target) |
| break; |
| } |
| if (i == ARRAY_SIZE(wm8961_clk_sys_ratio)) { |
| dev_err(codec->dev, "Unable to generate CLK_SYS_RATE\n"); |
| return -EINVAL; |
| } |
| dev_dbg(codec->dev, "Selected CLK_SYS_RATE of %d for %d/%d=%d\n", |
| wm8961_clk_sys_ratio[i].ratio, wm8961->sysclk, fs, |
| wm8961->sysclk / fs); |
| |
| reg = snd_soc_read(codec, WM8961_CLOCKING_4); |
| reg &= ~WM8961_CLK_SYS_RATE_MASK; |
| reg |= wm8961_clk_sys_ratio[i].val << WM8961_CLK_SYS_RATE_SHIFT; |
| snd_soc_write(codec, WM8961_CLOCKING_4, reg); |
| |
| reg = snd_soc_read(codec, WM8961_AUDIO_INTERFACE_0); |
| reg &= ~WM8961_WL_MASK; |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| reg |= 1 << WM8961_WL_SHIFT; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| reg |= 2 << WM8961_WL_SHIFT; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| reg |= 3 << WM8961_WL_SHIFT; |
| break; |
| default: |
| return -EINVAL; |
| } |
| snd_soc_write(codec, WM8961_AUDIO_INTERFACE_0, reg); |
| |
| /* Sloping stop-band filter is recommended for <= 24kHz */ |
| reg = snd_soc_read(codec, WM8961_ADC_DAC_CONTROL_2); |
| if (fs <= 24000) |
| reg |= WM8961_DACSLOPE; |
| else |
| reg &= ~WM8961_DACSLOPE; |
| snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_2, reg); |
| |
| return 0; |
| } |
| |
| static int wm8961_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| unsigned int freq, |
| int dir) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| struct wm8961_priv *wm8961 = snd_soc_codec_get_drvdata(codec); |
| u16 reg = snd_soc_read(codec, WM8961_CLOCKING1); |
| |
| if (freq > 33000000) { |
| dev_err(codec->dev, "MCLK must be <33MHz\n"); |
| return -EINVAL; |
| } |
| |
| if (freq > 16500000) { |
| dev_dbg(codec->dev, "Using MCLK/2 for %dHz MCLK\n", freq); |
| reg |= WM8961_MCLKDIV; |
| freq /= 2; |
| } else { |
| dev_dbg(codec->dev, "Using MCLK/1 for %dHz MCLK\n", freq); |
| reg &= ~WM8961_MCLKDIV; |
| } |
| |
| snd_soc_write(codec, WM8961_CLOCKING1, reg); |
| |
| wm8961->sysclk = freq; |
| |
| return 0; |
| } |
| |
| static int wm8961_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 aif = snd_soc_read(codec, WM8961_AUDIO_INTERFACE_0); |
| |
| aif &= ~(WM8961_BCLKINV | WM8961_LRP | |
| WM8961_MS | WM8961_FORMAT_MASK); |
| |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| aif |= WM8961_MS; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_RIGHT_J: |
| break; |
| |
| case SND_SOC_DAIFMT_LEFT_J: |
| aif |= 1; |
| break; |
| |
| case SND_SOC_DAIFMT_I2S: |
| aif |= 2; |
| break; |
| |
| case SND_SOC_DAIFMT_DSP_B: |
| aif |= WM8961_LRP; |
| case SND_SOC_DAIFMT_DSP_A: |
| aif |= 3; |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| case SND_SOC_DAIFMT_IB_NF: |
| break; |
| default: |
| return -EINVAL; |
| } |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| aif |= WM8961_LRP; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| aif |= WM8961_BCLKINV; |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| aif |= WM8961_BCLKINV | WM8961_LRP; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return snd_soc_write(codec, WM8961_AUDIO_INTERFACE_0, aif); |
| } |
| |
| static int wm8961_set_tristate(struct snd_soc_dai *dai, int tristate) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 reg = snd_soc_read(codec, WM8961_ADDITIONAL_CONTROL_2); |
| |
| if (tristate) |
| reg |= WM8961_TRIS; |
| else |
| reg &= ~WM8961_TRIS; |
| |
| return snd_soc_write(codec, WM8961_ADDITIONAL_CONTROL_2, reg); |
| } |
| |
| static int wm8961_digital_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 reg = snd_soc_read(codec, WM8961_ADC_DAC_CONTROL_1); |
| |
| if (mute) |
| reg |= WM8961_DACMU; |
| else |
| reg &= ~WM8961_DACMU; |
| |
| msleep(17); |
| |
| return snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_1, reg); |
| } |
| |
| static int wm8961_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 reg; |
| |
| switch (div_id) { |
| case WM8961_BCLK: |
| reg = snd_soc_read(codec, WM8961_CLOCKING2); |
| reg &= ~WM8961_BCLKDIV_MASK; |
| reg |= div; |
| snd_soc_write(codec, WM8961_CLOCKING2, reg); |
| break; |
| |
| case WM8961_LRCLK: |
| reg = snd_soc_read(codec, WM8961_AUDIO_INTERFACE_2); |
| reg &= ~WM8961_LRCLK_RATE_MASK; |
| reg |= div; |
| snd_soc_write(codec, WM8961_AUDIO_INTERFACE_2, reg); |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int wm8961_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| u16 reg; |
| |
| /* This is all slightly unusual since we have no bypass paths |
| * and the output amplifier structure means we can just slam |
| * the biases straight up rather than having to ramp them |
| * slowly. |
| */ |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| break; |
| |
| case SND_SOC_BIAS_PREPARE: |
| if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY) { |
| /* Enable bias generation */ |
| reg = snd_soc_read(codec, WM8961_ANTI_POP); |
| reg |= WM8961_BUFIOEN | WM8961_BUFDCOPEN; |
| snd_soc_write(codec, WM8961_ANTI_POP, reg); |
| |
| /* VMID=2*50k, VREF */ |
| reg = snd_soc_read(codec, WM8961_PWR_MGMT_1); |
| reg &= ~WM8961_VMIDSEL_MASK; |
| reg |= (1 << WM8961_VMIDSEL_SHIFT) | WM8961_VREF; |
| snd_soc_write(codec, WM8961_PWR_MGMT_1, reg); |
| } |
| break; |
| |
| case SND_SOC_BIAS_STANDBY: |
| if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) { |
| /* VREF off */ |
| reg = snd_soc_read(codec, WM8961_PWR_MGMT_1); |
| reg &= ~WM8961_VREF; |
| snd_soc_write(codec, WM8961_PWR_MGMT_1, reg); |
| |
| /* Bias generation off */ |
| reg = snd_soc_read(codec, WM8961_ANTI_POP); |
| reg &= ~(WM8961_BUFIOEN | WM8961_BUFDCOPEN); |
| snd_soc_write(codec, WM8961_ANTI_POP, reg); |
| |
| /* VMID off */ |
| reg = snd_soc_read(codec, WM8961_PWR_MGMT_1); |
| reg &= ~WM8961_VMIDSEL_MASK; |
| snd_soc_write(codec, WM8961_PWR_MGMT_1, reg); |
| } |
| break; |
| |
| case SND_SOC_BIAS_OFF: |
| break; |
| } |
| |
| codec->dapm.bias_level = level; |
| |
| return 0; |
| } |
| |
| |
| #define WM8961_RATES SNDRV_PCM_RATE_8000_48000 |
| |
| #define WM8961_FORMATS \ |
| (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
| SNDRV_PCM_FMTBIT_S24_LE) |
| |
| static const struct snd_soc_dai_ops wm8961_dai_ops = { |
| .hw_params = wm8961_hw_params, |
| .set_sysclk = wm8961_set_sysclk, |
| .set_fmt = wm8961_set_fmt, |
| .digital_mute = wm8961_digital_mute, |
| .set_tristate = wm8961_set_tristate, |
| .set_clkdiv = wm8961_set_clkdiv, |
| }; |
| |
| static struct snd_soc_dai_driver wm8961_dai = { |
| .name = "wm8961-hifi", |
| .playback = { |
| .stream_name = "HiFi Playback", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8961_RATES, |
| .formats = WM8961_FORMATS,}, |
| .capture = { |
| .stream_name = "HiFi Capture", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8961_RATES, |
| .formats = WM8961_FORMATS,}, |
| .ops = &wm8961_dai_ops, |
| }; |
| |
| static int wm8961_probe(struct snd_soc_codec *codec) |
| { |
| struct snd_soc_dapm_context *dapm = &codec->dapm; |
| int ret = 0; |
| u16 reg; |
| |
| ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); |
| return ret; |
| } |
| |
| reg = snd_soc_read(codec, WM8961_SOFTWARE_RESET); |
| if (reg != 0x1801) { |
| dev_err(codec->dev, "Device is not a WM8961: ID=0x%x\n", reg); |
| return -EINVAL; |
| } |
| |
| /* This isn't volatile - readback doesn't correspond to write */ |
| codec->cache_bypass = 1; |
| reg = snd_soc_read(codec, WM8961_RIGHT_INPUT_VOLUME); |
| codec->cache_bypass = 0; |
| dev_info(codec->dev, "WM8961 family %d revision %c\n", |
| (reg & WM8961_DEVICE_ID_MASK) >> WM8961_DEVICE_ID_SHIFT, |
| ((reg & WM8961_CHIP_REV_MASK) >> WM8961_CHIP_REV_SHIFT) |
| + 'A'); |
| |
| ret = wm8961_reset(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to issue reset\n"); |
| return ret; |
| } |
| |
| /* Enable class W */ |
| reg = snd_soc_read(codec, WM8961_CHARGE_PUMP_B); |
| reg |= WM8961_CP_DYN_PWR_MASK; |
| snd_soc_write(codec, WM8961_CHARGE_PUMP_B, reg); |
| |
| /* Latch volume update bits (right channel only, we always |
| * write both out) and default ZC on. */ |
| reg = snd_soc_read(codec, WM8961_ROUT1_VOLUME); |
| snd_soc_write(codec, WM8961_ROUT1_VOLUME, |
| reg | WM8961_LO1ZC | WM8961_OUT1VU); |
| snd_soc_write(codec, WM8961_LOUT1_VOLUME, reg | WM8961_LO1ZC); |
| reg = snd_soc_read(codec, WM8961_ROUT2_VOLUME); |
| snd_soc_write(codec, WM8961_ROUT2_VOLUME, |
| reg | WM8961_SPKRZC | WM8961_SPKVU); |
| snd_soc_write(codec, WM8961_LOUT2_VOLUME, reg | WM8961_SPKLZC); |
| |
| reg = snd_soc_read(codec, WM8961_RIGHT_ADC_VOLUME); |
| snd_soc_write(codec, WM8961_RIGHT_ADC_VOLUME, reg | WM8961_ADCVU); |
| reg = snd_soc_read(codec, WM8961_RIGHT_INPUT_VOLUME); |
| snd_soc_write(codec, WM8961_RIGHT_INPUT_VOLUME, reg | WM8961_IPVU); |
| |
| /* Use soft mute by default */ |
| reg = snd_soc_read(codec, WM8961_ADC_DAC_CONTROL_2); |
| reg |= WM8961_DACSMM; |
| snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_2, reg); |
| |
| /* Use automatic clocking mode by default; for now this is all |
| * we support. |
| */ |
| reg = snd_soc_read(codec, WM8961_CLOCKING_3); |
| reg &= ~WM8961_MANUAL_MODE; |
| snd_soc_write(codec, WM8961_CLOCKING_3, reg); |
| |
| wm8961_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| snd_soc_add_controls(codec, wm8961_snd_controls, |
| ARRAY_SIZE(wm8961_snd_controls)); |
| snd_soc_dapm_new_controls(dapm, wm8961_dapm_widgets, |
| ARRAY_SIZE(wm8961_dapm_widgets)); |
| snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths)); |
| |
| return 0; |
| } |
| |
| static int wm8961_remove(struct snd_soc_codec *codec) |
| { |
| wm8961_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int wm8961_suspend(struct snd_soc_codec *codec) |
| { |
| wm8961_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| |
| return 0; |
| } |
| |
| static int wm8961_resume(struct snd_soc_codec *codec) |
| { |
| u16 *reg_cache = codec->reg_cache; |
| int i; |
| |
| for (i = 0; i < codec->driver->reg_cache_size; i++) { |
| if (reg_cache[i] == wm8961_reg_defaults[i]) |
| continue; |
| |
| if (i == WM8961_SOFTWARE_RESET) |
| continue; |
| |
| snd_soc_write(codec, i, reg_cache[i]); |
| } |
| |
| wm8961_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| return 0; |
| } |
| #else |
| #define wm8961_suspend NULL |
| #define wm8961_resume NULL |
| #endif |
| |
| static struct snd_soc_codec_driver soc_codec_dev_wm8961 = { |
| .probe = wm8961_probe, |
| .remove = wm8961_remove, |
| .suspend = wm8961_suspend, |
| .resume = wm8961_resume, |
| .set_bias_level = wm8961_set_bias_level, |
| .reg_cache_size = ARRAY_SIZE(wm8961_reg_defaults), |
| .reg_word_size = sizeof(u16), |
| .reg_cache_default = wm8961_reg_defaults, |
| .volatile_register = wm8961_volatile_register, |
| }; |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| static __devinit int wm8961_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct wm8961_priv *wm8961; |
| int ret; |
| |
| wm8961 = kzalloc(sizeof(struct wm8961_priv), GFP_KERNEL); |
| if (wm8961 == NULL) |
| return -ENOMEM; |
| |
| i2c_set_clientdata(i2c, wm8961); |
| |
| ret = snd_soc_register_codec(&i2c->dev, |
| &soc_codec_dev_wm8961, &wm8961_dai, 1); |
| if (ret < 0) |
| kfree(wm8961); |
| return ret; |
| } |
| |
| static __devexit int wm8961_i2c_remove(struct i2c_client *client) |
| { |
| snd_soc_unregister_codec(&client->dev); |
| kfree(i2c_get_clientdata(client)); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8961_i2c_id[] = { |
| { "wm8961", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8961_i2c_id); |
| |
| static struct i2c_driver wm8961_i2c_driver = { |
| .driver = { |
| .name = "wm8961", |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8961_i2c_probe, |
| .remove = __devexit_p(wm8961_i2c_remove), |
| .id_table = wm8961_i2c_id, |
| }; |
| #endif |
| |
| static int __init wm8961_modinit(void) |
| { |
| int ret = 0; |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| ret = i2c_add_driver(&wm8961_i2c_driver); |
| if (ret != 0) { |
| printk(KERN_ERR "Failed to register wm8961 I2C driver: %d\n", |
| ret); |
| } |
| #endif |
| return ret; |
| } |
| module_init(wm8961_modinit); |
| |
| static void __exit wm8961_exit(void) |
| { |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| i2c_del_driver(&wm8961_i2c_driver); |
| #endif |
| } |
| module_exit(wm8961_exit); |
| |
| MODULE_DESCRIPTION("ASoC WM8961 driver"); |
| MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_LICENSE("GPL"); |