/* * wm8962.c -- WM8962 ALSA SoC Audio driver * * Copyright 2010 Wolfson Microelectronics plc * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "wm8962.h" static struct snd_soc_codec *wm8962_codec; struct snd_soc_codec_device soc_codec_dev_wm8962; #define WM8962_NUM_SUPPLIES 8 static const char *wm8962_supply_names[WM8962_NUM_SUPPLIES] = { "DCVDD", "DBVDD", "AVDD", "CPVDD", "MICVDD", "PLLVDD", "SPKVDD1", "SPKVDD2", }; /* codec private data */ struct wm8962_priv { struct snd_soc_codec codec; u16 reg_cache[WM8962_MAX_REGISTER + 1]; int sysclk; int sysclk_rate; int bclk; /* Desired BCLK */ int lrclk; int fll_src; int fll_fref; int fll_fout; struct regulator_bulk_data supplies[WM8962_NUM_SUPPLIES]; struct notifier_block disable_nb[WM8962_NUM_SUPPLIES]; #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) struct input_dev *beep; struct work_struct beep_work; int beep_rate; #endif }; /* We can't use the same notifier block for more than one supply and * there's no way I can see to get from a callback to the caller * except container_of(). */ #define WM8962_REGULATOR_EVENT(n) \ static int wm8962_regulator_event_##n(struct notifier_block *nb, \ unsigned long event, void *data) \ { \ struct wm8962_priv *wm8962 = container_of(nb, struct wm8962_priv, \ disable_nb[n]); \ if (event & REGULATOR_EVENT_DISABLE) { \ wm8962->codec.cache_sync = 1; \ } \ return 0; \ } WM8962_REGULATOR_EVENT(0) WM8962_REGULATOR_EVENT(1) WM8962_REGULATOR_EVENT(2) WM8962_REGULATOR_EVENT(3) WM8962_REGULATOR_EVENT(4) WM8962_REGULATOR_EVENT(5) WM8962_REGULATOR_EVENT(6) WM8962_REGULATOR_EVENT(7) static int wm8962_volatile_register(unsigned int reg) { if (wm8962_reg_access[reg].vol) return 1; else return 0; } static int wm8962_readable(unsigned int reg) { if (wm8962_reg_access[reg].read) return 1; else return 0; } static int wm8962_reset(struct snd_soc_codec *codec) { return snd_soc_write(codec, WM8962_SOFTWARE_RESET, 0); } static const DECLARE_TLV_DB_SCALE(inpga_tlv, -2325, 75, 0); static const DECLARE_TLV_DB_SCALE(mixin_tlv, -1500, 300, 0); static const unsigned int mixinpga_tlv[] = { TLV_DB_RANGE_HEAD(7), 0, 1, TLV_DB_SCALE_ITEM(0, 600, 0), 2, 2, TLV_DB_SCALE_ITEM(1300, 1300, 0), 3, 4, TLV_DB_SCALE_ITEM(1800, 200, 0), 5, 5, TLV_DB_SCALE_ITEM(2400, 0, 0), 6, 7, TLV_DB_SCALE_ITEM(2700, 300, 0), }; static const DECLARE_TLV_DB_SCALE(beep_tlv, -9600, 600, 1); static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1); static const DECLARE_TLV_DB_SCALE(st_tlv, -3600, 300, 0); static const DECLARE_TLV_DB_SCALE(inmix_tlv, -600, 600, 0); static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0); static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); static const DECLARE_TLV_DB_SCALE(hp_tlv, -700, 100, 0); static const unsigned int classd_tlv[] = { TLV_DB_RANGE_HEAD(7), 0, 6, TLV_DB_SCALE_ITEM(0, 150, 0), 7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0), }; /* The VU bits for the headphones are in a different register to the mute * bits and only take effect on the PGA if it is actually powered. */ static int wm8962_put_hp_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); u16 *reg_cache = codec->reg_cache; int ret; /* Apply the update (if any) */ ret = snd_soc_put_volsw(kcontrol, ucontrol); if (ret == 0) return 0; /* If the left PGA is enabled hit that VU bit... */ if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_HPOUTL_PGA_ENA) return snd_soc_write(codec, WM8962_HPOUTL_VOLUME, reg_cache[WM8962_HPOUTL_VOLUME]); /* ...otherwise the right. The VU is stereo. */ if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_HPOUTR_PGA_ENA) return snd_soc_write(codec, WM8962_HPOUTR_VOLUME, reg_cache[WM8962_HPOUTR_VOLUME]); return 0; } /* The VU bits for the speakers are in a different register to the mute * bits and only take effect on the PGA if it is actually powered. */ static int wm8962_put_spk_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); u16 *reg_cache = codec->reg_cache; int ret; /* Apply the update (if any) */ ret = snd_soc_put_volsw(kcontrol, ucontrol); if (ret == 0) return 0; /* If the left PGA is enabled hit that VU bit... */ if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_SPKOUTL_PGA_ENA) return snd_soc_write(codec, WM8962_SPKOUTL_VOLUME, reg_cache[WM8962_SPKOUTL_VOLUME]); /* ...otherwise the right. The VU is stereo. */ if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_SPKOUTR_PGA_ENA) return snd_soc_write(codec, WM8962_SPKOUTR_VOLUME, reg_cache[WM8962_SPKOUTR_VOLUME]); return 0; } static const struct snd_kcontrol_new wm8962_snd_controls[] = { SOC_DOUBLE("Input Mixer Switch", WM8962_INPUT_MIXER_CONTROL_1, 3, 2, 1, 1), SOC_SINGLE_TLV("MIXINL IN2L Volume", WM8962_LEFT_INPUT_MIXER_VOLUME, 6, 7, 0, mixin_tlv), SOC_SINGLE_TLV("MIXINL PGA Volume", WM8962_LEFT_INPUT_MIXER_VOLUME, 3, 7, 0, mixinpga_tlv), SOC_SINGLE_TLV("MIXINL IN3L Volume", WM8962_LEFT_INPUT_MIXER_VOLUME, 0, 7, 0, mixin_tlv), SOC_SINGLE_TLV("MIXINR IN2R Volume", WM8962_RIGHT_INPUT_MIXER_VOLUME, 6, 7, 0, mixin_tlv), SOC_SINGLE_TLV("MIXINR PGA Volume", WM8962_RIGHT_INPUT_MIXER_VOLUME, 3, 7, 0, mixinpga_tlv), SOC_SINGLE_TLV("MIXINR IN3R Volume", WM8962_RIGHT_INPUT_MIXER_VOLUME, 0, 7, 0, mixin_tlv), SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8962_LEFT_ADC_VOLUME, WM8962_RIGHT_ADC_VOLUME, 1, 127, 0, digital_tlv), SOC_DOUBLE_R_TLV("Capture Volume", WM8962_LEFT_INPUT_VOLUME, WM8962_RIGHT_INPUT_VOLUME, 0, 63, 0, inpga_tlv), SOC_DOUBLE_R("Capture Switch", WM8962_LEFT_INPUT_VOLUME, WM8962_RIGHT_INPUT_VOLUME, 7, 1, 1), SOC_DOUBLE_R("Capture ZC Switch", WM8962_LEFT_INPUT_VOLUME, WM8962_RIGHT_INPUT_VOLUME, 6, 1, 1), SOC_DOUBLE_R_TLV("Sidetone Volume", WM8962_DAC_DSP_MIXING_1, WM8962_DAC_DSP_MIXING_2, 4, 12, 0, st_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8962_LEFT_DAC_VOLUME, WM8962_RIGHT_DAC_VOLUME, 1, 127, 0, digital_tlv), SOC_SINGLE("DAC High Performance Switch", WM8962_ADC_DAC_CONTROL_2, 0, 1, 0), SOC_SINGLE("ADC High Performance Switch", WM8962_ADDITIONAL_CONTROL_1, 5, 1, 0), SOC_SINGLE_TLV("Beep Volume", WM8962_BEEP_GENERATOR_1, 4, 15, 0, beep_tlv), SOC_DOUBLE_R_TLV("Headphone Volume", WM8962_HPOUTL_VOLUME, WM8962_HPOUTR_VOLUME, 0, 127, 0, out_tlv), SOC_DOUBLE_EXT("Headphone Switch", WM8962_PWR_MGMT_2, 1, 0, 1, 1, snd_soc_get_volsw, wm8962_put_hp_sw), SOC_DOUBLE_R("Headphone ZC Switch", WM8962_HPOUTL_VOLUME, WM8962_HPOUTR_VOLUME, 7, 1, 0), SOC_DOUBLE_TLV("Headphone Aux Volume", WM8962_ANALOGUE_HP_2, 3, 6, 7, 0, hp_tlv), SOC_DOUBLE_R("Headphone Mixer Switch", WM8962_HEADPHONE_MIXER_3, WM8962_HEADPHONE_MIXER_4, 8, 1, 1), SOC_SINGLE_TLV("HPMIXL IN4L Volume", WM8962_HEADPHONE_MIXER_3, 3, 7, 0, bypass_tlv), SOC_SINGLE_TLV("HPMIXL IN4R Volume", WM8962_HEADPHONE_MIXER_3, 0, 7, 0, bypass_tlv), SOC_SINGLE_TLV("HPMIXL MIXINL Volume", WM8962_HEADPHONE_MIXER_3, 7, 1, 1, inmix_tlv), SOC_SINGLE_TLV("HPMIXL MIXINR Volume", WM8962_HEADPHONE_MIXER_3, 6, 1, 1, inmix_tlv), SOC_SINGLE_TLV("HPMIXR IN4L Volume", WM8962_HEADPHONE_MIXER_4, 3, 7, 0, bypass_tlv), SOC_SINGLE_TLV("HPMIXR IN4R Volume", WM8962_HEADPHONE_MIXER_4, 0, 7, 0, bypass_tlv), SOC_SINGLE_TLV("HPMIXR MIXINL Volume", WM8962_HEADPHONE_MIXER_4, 7, 1, 1, inmix_tlv), SOC_SINGLE_TLV("HPMIXR MIXINR Volume", WM8962_HEADPHONE_MIXER_4, 6, 1, 1, inmix_tlv), SOC_SINGLE_TLV("Speaker Boost Volume", WM8962_CLASS_D_CONTROL_2, 0, 7, 0, classd_tlv), }; static const struct snd_kcontrol_new wm8962_spk_mono_controls[] = { SOC_SINGLE_TLV("Speaker Volume", WM8962_SPKOUTL_VOLUME, 0, 127, 0, out_tlv), SOC_SINGLE_EXT("Speaker Switch", WM8962_CLASS_D_CONTROL_1, 1, 1, 1, snd_soc_get_volsw, wm8962_put_spk_sw), SOC_SINGLE("Speaker ZC Switch", WM8962_SPKOUTL_VOLUME, 7, 1, 0), SOC_SINGLE("Speaker Mixer Switch", WM8962_SPEAKER_MIXER_3, 8, 1, 1), SOC_SINGLE_TLV("Speaker Mixer IN4L Volume", WM8962_SPEAKER_MIXER_3, 3, 7, 0, bypass_tlv), SOC_SINGLE_TLV("Speaker Mixer IN4R Volume", WM8962_SPEAKER_MIXER_3, 0, 7, 0, bypass_tlv), SOC_SINGLE_TLV("Speaker Mixer MIXINL Volume", WM8962_SPEAKER_MIXER_3, 7, 1, 1, inmix_tlv), SOC_SINGLE_TLV("Speaker Mixer MIXINR Volume", WM8962_SPEAKER_MIXER_3, 6, 1, 1, inmix_tlv), SOC_SINGLE_TLV("Speaker Mixer DACL Volume", WM8962_SPEAKER_MIXER_5, 7, 1, 0, inmix_tlv), SOC_SINGLE_TLV("Speaker Mixer DACR Volume", WM8962_SPEAKER_MIXER_5, 6, 1, 0, inmix_tlv), }; static const struct snd_kcontrol_new wm8962_spk_stereo_controls[] = { SOC_DOUBLE_R_TLV("Speaker Volume", WM8962_SPKOUTL_VOLUME, WM8962_SPKOUTR_VOLUME, 0, 127, 0, out_tlv), SOC_DOUBLE_EXT("Speaker Switch", WM8962_CLASS_D_CONTROL_1, 1, 0, 1, 1, snd_soc_get_volsw, wm8962_put_spk_sw), SOC_DOUBLE_R("Speaker ZC Switch", WM8962_SPKOUTL_VOLUME, WM8962_SPKOUTR_VOLUME, 7, 1, 0), SOC_DOUBLE_R("Speaker Mixer Switch", WM8962_SPEAKER_MIXER_3, WM8962_SPEAKER_MIXER_4, 8, 1, 1), SOC_SINGLE_TLV("SPKOUTL Mixer IN4L Volume", WM8962_SPEAKER_MIXER_3, 3, 7, 0, bypass_tlv), SOC_SINGLE_TLV("SPKOUTL Mixer IN4R Volume", WM8962_SPEAKER_MIXER_3, 0, 7, 0, bypass_tlv), SOC_SINGLE_TLV("SPKOUTL Mixer MIXINL Volume", WM8962_SPEAKER_MIXER_3, 7, 1, 1, inmix_tlv), SOC_SINGLE_TLV("SPKOUTL Mixer MIXINR Volume", WM8962_SPEAKER_MIXER_3, 6, 1, 1, inmix_tlv), SOC_SINGLE_TLV("SPKOUTL Mixer DACL Volume", WM8962_SPEAKER_MIXER_5, 7, 1, 0, inmix_tlv), SOC_SINGLE_TLV("SPKOUTL Mixer DACR Volume", WM8962_SPEAKER_MIXER_5, 6, 1, 0, inmix_tlv), SOC_SINGLE_TLV("SPKOUTR Mixer IN4L Volume", WM8962_SPEAKER_MIXER_4, 3, 7, 0, bypass_tlv), SOC_SINGLE_TLV("SPKOUTR Mixer IN4R Volume", WM8962_SPEAKER_MIXER_4, 0, 7, 0, bypass_tlv), SOC_SINGLE_TLV("SPKOUTR Mixer MIXINL Volume", WM8962_SPEAKER_MIXER_4, 7, 1, 1, inmix_tlv), SOC_SINGLE_TLV("SPKOUTR Mixer MIXINR Volume", WM8962_SPEAKER_MIXER_4, 6, 1, 1, inmix_tlv), SOC_SINGLE_TLV("SPKOUTR Mixer DACL Volume", WM8962_SPEAKER_MIXER_5, 5, 1, 0, inmix_tlv), SOC_SINGLE_TLV("SPKOUTR Mixer DACR Volume", WM8962_SPEAKER_MIXER_5, 4, 1, 0, inmix_tlv), }; static int sysclk_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; int src; int fll; src = snd_soc_read(codec, WM8962_CLOCKING2) & WM8962_SYSCLK_SRC_MASK; switch (src) { case 0: /* MCLK */ fll = 0; break; case 0x200: /* FLL */ fll = 1; break; default: dev_err(codec->dev, "Unknown SYSCLK source %x\n", src); return -EINVAL; } switch (event) { case SND_SOC_DAPM_PRE_PMU: if (fll) snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_ENA, WM8962_FLL_ENA); break; case SND_SOC_DAPM_POST_PMD: if (fll) snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_ENA, 0); break; default: BUG(); return -EINVAL; } return 0; } static int cp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { switch (event) { case SND_SOC_DAPM_POST_PMU: msleep(5); break; default: BUG(); return -EINVAL; } return 0; } static int hp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; int timeout; int reg; int expected = (WM8962_DCS_STARTUP_DONE_HP1L | WM8962_DCS_STARTUP_DONE_HP1R); switch (event) { case SND_SOC_DAPM_POST_PMU: snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0, WM8962_HP1L_ENA | WM8962_HP1R_ENA, WM8962_HP1L_ENA | WM8962_HP1R_ENA); udelay(20); snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0, WM8962_HP1L_ENA_DLY | WM8962_HP1R_ENA_DLY, WM8962_HP1L_ENA_DLY | WM8962_HP1R_ENA_DLY); /* Start the DC servo */ snd_soc_update_bits(codec, WM8962_DC_SERVO_1, WM8962_HP1L_DCS_ENA | WM8962_HP1R_DCS_ENA | WM8962_HP1L_DCS_STARTUP | WM8962_HP1R_DCS_STARTUP, WM8962_HP1L_DCS_ENA | WM8962_HP1R_DCS_ENA | WM8962_HP1L_DCS_STARTUP | WM8962_HP1R_DCS_STARTUP); /* Wait for it to complete, should be well under 100ms */ timeout = 0; do { msleep(1); reg = snd_soc_read(codec, WM8962_DC_SERVO_6); if (reg < 0) { dev_err(codec->dev, "Failed to read DCS status: %d\n", reg); continue; } dev_dbg(codec->dev, "DCS status: %x\n", reg); } while (++timeout < 200 && (reg & expected) != expected); if ((reg & expected) != expected) dev_err(codec->dev, "DC servo timed out\n"); else dev_dbg(codec->dev, "DC servo complete after %dms\n", timeout); snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0, WM8962_HP1L_ENA_OUTP | WM8962_HP1R_ENA_OUTP, WM8962_HP1L_ENA_OUTP | WM8962_HP1R_ENA_OUTP); udelay(20); snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0, WM8962_HP1L_RMV_SHORT | WM8962_HP1R_RMV_SHORT, WM8962_HP1L_RMV_SHORT | WM8962_HP1R_RMV_SHORT); break; case SND_SOC_DAPM_PRE_PMD: snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0, WM8962_HP1L_RMV_SHORT | WM8962_HP1R_RMV_SHORT, 0); udelay(20); snd_soc_update_bits(codec, WM8962_DC_SERVO_1, WM8962_HP1L_DCS_ENA | WM8962_HP1R_DCS_ENA | WM8962_HP1L_DCS_STARTUP | WM8962_HP1R_DCS_STARTUP, 0); snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0, WM8962_HP1L_ENA | WM8962_HP1R_ENA | WM8962_HP1L_ENA_DLY | WM8962_HP1R_ENA_DLY | WM8962_HP1L_ENA_OUTP | WM8962_HP1R_ENA_OUTP, 0); break; default: BUG(); return -EINVAL; } return 0; } /* VU bits for the output PGAs only take effect while the PGA is powered */ static int out_pga_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; u16 *reg_cache = codec->reg_cache; int reg; switch (w->shift) { case WM8962_HPOUTR_PGA_ENA_SHIFT: reg = WM8962_HPOUTR_VOLUME; break; case WM8962_HPOUTL_PGA_ENA_SHIFT: reg = WM8962_HPOUTL_VOLUME; break; case WM8962_SPKOUTR_PGA_ENA_SHIFT: reg = WM8962_SPKOUTR_VOLUME; break; case WM8962_SPKOUTL_PGA_ENA_SHIFT: reg = WM8962_SPKOUTL_VOLUME; break; default: BUG(); return -EINVAL; } switch (event) { case SND_SOC_DAPM_POST_PMU: return snd_soc_write(codec, reg, reg_cache[reg]); default: BUG(); return -EINVAL; } } static const char *st_text[] = { "None", "Right", "Left" }; static const struct soc_enum str_enum = SOC_ENUM_SINGLE(WM8962_DAC_DSP_MIXING_1, 2, 3, st_text); static const struct snd_kcontrol_new str_mux = SOC_DAPM_ENUM("Right Sidetone", str_enum); static const struct soc_enum stl_enum = SOC_ENUM_SINGLE(WM8962_DAC_DSP_MIXING_2, 2, 3, st_text); static const struct snd_kcontrol_new stl_mux = SOC_DAPM_ENUM("Left Sidetone", stl_enum); static const char *outmux_text[] = { "DAC", "Mixer" }; static const struct soc_enum spkoutr_enum = SOC_ENUM_SINGLE(WM8962_SPEAKER_MIXER_2, 7, 2, outmux_text); static const struct snd_kcontrol_new spkoutr_mux = SOC_DAPM_ENUM("SPKOUTR Mux", spkoutr_enum); static const struct soc_enum spkoutl_enum = SOC_ENUM_SINGLE(WM8962_SPEAKER_MIXER_1, 7, 2, outmux_text); static const struct snd_kcontrol_new spkoutl_mux = SOC_DAPM_ENUM("SPKOUTL Mux", spkoutl_enum); static const struct soc_enum hpoutr_enum = SOC_ENUM_SINGLE(WM8962_HEADPHONE_MIXER_2, 7, 2, outmux_text); static const struct snd_kcontrol_new hpoutr_mux = SOC_DAPM_ENUM("HPOUTR Mux", hpoutr_enum); static const struct soc_enum hpoutl_enum = SOC_ENUM_SINGLE(WM8962_HEADPHONE_MIXER_1, 7, 2, outmux_text); static const struct snd_kcontrol_new hpoutl_mux = SOC_DAPM_ENUM("HPOUTL Mux", hpoutl_enum); static const struct snd_kcontrol_new inpgal[] = { SOC_DAPM_SINGLE("IN1L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 3, 1, 0), SOC_DAPM_SINGLE("IN2L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 2, 1, 0), SOC_DAPM_SINGLE("IN3L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 1, 1, 0), SOC_DAPM_SINGLE("IN4L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 0, 1, 0), }; static const struct snd_kcontrol_new inpgar[] = { SOC_DAPM_SINGLE("IN1R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 3, 1, 0), SOC_DAPM_SINGLE("IN2R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 2, 1, 0), SOC_DAPM_SINGLE("IN3R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 1, 1, 0), SOC_DAPM_SINGLE("IN4R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 0, 1, 0), }; static const struct snd_kcontrol_new mixinl[] = { SOC_DAPM_SINGLE("IN2L Switch", WM8962_INPUT_MIXER_CONTROL_2, 5, 1, 0), SOC_DAPM_SINGLE("IN3L Switch", WM8962_INPUT_MIXER_CONTROL_2, 4, 1, 0), SOC_DAPM_SINGLE("PGA Switch", WM8962_INPUT_MIXER_CONTROL_2, 3, 1, 0), }; static const struct snd_kcontrol_new mixinr[] = { SOC_DAPM_SINGLE("IN2R Switch", WM8962_INPUT_MIXER_CONTROL_2, 2, 1, 0), SOC_DAPM_SINGLE("IN3R Switch", WM8962_INPUT_MIXER_CONTROL_2, 1, 1, 0), SOC_DAPM_SINGLE("PGA Switch", WM8962_INPUT_MIXER_CONTROL_2, 0, 1, 0), }; static const struct snd_kcontrol_new hpmixl[] = { SOC_DAPM_SINGLE("DACL Switch", WM8962_HEADPHONE_MIXER_1, 5, 1, 0), SOC_DAPM_SINGLE("DACR Switch", WM8962_HEADPHONE_MIXER_1, 4, 1, 0), SOC_DAPM_SINGLE("MIXINL Switch", WM8962_HEADPHONE_MIXER_1, 3, 1, 0), SOC_DAPM_SINGLE("MIXINR Switch", WM8962_HEADPHONE_MIXER_1, 2, 1, 0), SOC_DAPM_SINGLE("IN4L Switch", WM8962_HEADPHONE_MIXER_1, 1, 1, 0), SOC_DAPM_SINGLE("IN4R Switch", WM8962_HEADPHONE_MIXER_1, 0, 1, 0), }; static const struct snd_kcontrol_new hpmixr[] = { SOC_DAPM_SINGLE("DACL Switch", WM8962_HEADPHONE_MIXER_2, 5, 1, 0), SOC_DAPM_SINGLE("DACR Switch", WM8962_HEADPHONE_MIXER_2, 4, 1, 0), SOC_DAPM_SINGLE("MIXINL Switch", WM8962_HEADPHONE_MIXER_2, 3, 1, 0), SOC_DAPM_SINGLE("MIXINR Switch", WM8962_HEADPHONE_MIXER_2, 2, 1, 0), SOC_DAPM_SINGLE("IN4L Switch", WM8962_HEADPHONE_MIXER_2, 1, 1, 0), SOC_DAPM_SINGLE("IN4R Switch", WM8962_HEADPHONE_MIXER_2, 0, 1, 0), }; static const struct snd_kcontrol_new spkmixl[] = { SOC_DAPM_SINGLE("DACL Switch", WM8962_SPEAKER_MIXER_1, 5, 1, 0), SOC_DAPM_SINGLE("DACR Switch", WM8962_SPEAKER_MIXER_1, 4, 1, 0), SOC_DAPM_SINGLE("MIXINL Switch", WM8962_SPEAKER_MIXER_1, 3, 1, 0), SOC_DAPM_SINGLE("MIXINR Switch", WM8962_SPEAKER_MIXER_1, 2, 1, 0), SOC_DAPM_SINGLE("IN4L Switch", WM8962_SPEAKER_MIXER_1, 1, 1, 0), SOC_DAPM_SINGLE("IN4R Switch", WM8962_SPEAKER_MIXER_1, 0, 1, 0), }; static const struct snd_kcontrol_new spkmixr[] = { SOC_DAPM_SINGLE("DACL Switch", WM8962_SPEAKER_MIXER_2, 5, 1, 0), SOC_DAPM_SINGLE("DACR Switch", WM8962_SPEAKER_MIXER_2, 4, 1, 0), SOC_DAPM_SINGLE("MIXINL Switch", WM8962_SPEAKER_MIXER_2, 3, 1, 0), SOC_DAPM_SINGLE("MIXINR Switch", WM8962_SPEAKER_MIXER_2, 2, 1, 0), SOC_DAPM_SINGLE("IN4L Switch", WM8962_SPEAKER_MIXER_2, 1, 1, 0), SOC_DAPM_SINGLE("IN4R Switch", WM8962_SPEAKER_MIXER_2, 0, 1, 0), }; static const struct snd_soc_dapm_widget wm8962_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_INPUT("IN4L"), SND_SOC_DAPM_INPUT("IN4R"), SND_SOC_DAPM_INPUT("Beep"), SND_SOC_DAPM_SUPPLY("Class G", WM8962_CHARGE_PUMP_B, 0, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("SYSCLK", WM8962_CLOCKING2, 5, 0, sysclk_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("Charge Pump", WM8962_CHARGE_PUMP_1, 0, 0, cp_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_SUPPLY("TOCLK", WM8962_ADDITIONAL_CONTROL_1, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("INPGAL", WM8962_LEFT_INPUT_PGA_CONTROL, 4, 0, inpgal, ARRAY_SIZE(inpgal)), SND_SOC_DAPM_MIXER("INPGAR", WM8962_RIGHT_INPUT_PGA_CONTROL, 4, 0, inpgar, ARRAY_SIZE(inpgar)), SND_SOC_DAPM_MIXER("MIXINL", WM8962_PWR_MGMT_1, 5, 0, mixinl, ARRAY_SIZE(mixinl)), SND_SOC_DAPM_MIXER("MIXINR", WM8962_PWR_MGMT_1, 4, 0, mixinr, ARRAY_SIZE(mixinr)), SND_SOC_DAPM_ADC("ADCL", "Capture", WM8962_PWR_MGMT_1, 3, 0), SND_SOC_DAPM_ADC("ADCR", "Capture", WM8962_PWR_MGMT_1, 2, 0), SND_SOC_DAPM_MUX("STL", SND_SOC_NOPM, 0, 0, &stl_mux), SND_SOC_DAPM_MUX("STR", SND_SOC_NOPM, 0, 0, &str_mux), SND_SOC_DAPM_DAC("DACL", "Playback", WM8962_PWR_MGMT_2, 8, 0), SND_SOC_DAPM_DAC("DACR", "Playback", WM8962_PWR_MGMT_2, 7, 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_MIXER("HPMIXL", WM8962_MIXER_ENABLES, 3, 0, hpmixl, ARRAY_SIZE(hpmixl)), SND_SOC_DAPM_MIXER("HPMIXR", WM8962_MIXER_ENABLES, 2, 0, hpmixr, ARRAY_SIZE(hpmixr)), SND_SOC_DAPM_MUX_E("HPOUTL PGA", WM8962_PWR_MGMT_2, 6, 0, &hpoutl_mux, out_pga_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_MUX_E("HPOUTR PGA", WM8962_PWR_MGMT_2, 5, 0, &hpoutr_mux, out_pga_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_PGA_E("HPOUT", SND_SOC_NOPM, 0, 0, NULL, 0, hp_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_OUTPUT("HPOUTL"), SND_SOC_DAPM_OUTPUT("HPOUTR"), }; static const struct snd_soc_dapm_widget wm8962_dapm_spk_mono_widgets[] = { SND_SOC_DAPM_MIXER("Speaker Mixer", WM8962_MIXER_ENABLES, 1, 0, spkmixl, ARRAY_SIZE(spkmixl)), SND_SOC_DAPM_MUX_E("Speaker PGA", WM8962_PWR_MGMT_2, 4, 0, &spkoutl_mux, out_pga_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_PGA("Speaker Output", WM8962_CLASS_D_CONTROL_1, 7, 0, NULL, 0), SND_SOC_DAPM_OUTPUT("SPKOUT"), }; static const struct snd_soc_dapm_widget wm8962_dapm_spk_stereo_widgets[] = { SND_SOC_DAPM_MIXER("SPKOUTL Mixer", WM8962_MIXER_ENABLES, 1, 0, spkmixl, ARRAY_SIZE(spkmixl)), SND_SOC_DAPM_MIXER("SPKOUTR Mixer", WM8962_MIXER_ENABLES, 0, 0, spkmixr, ARRAY_SIZE(spkmixr)), SND_SOC_DAPM_MUX_E("SPKOUTL PGA", WM8962_PWR_MGMT_2, 4, 0, &spkoutl_mux, out_pga_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_MUX_E("SPKOUTR PGA", WM8962_PWR_MGMT_2, 3, 0, &spkoutr_mux, out_pga_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_PGA("SPKOUTR Output", WM8962_CLASS_D_CONTROL_1, 7, 0, NULL, 0), SND_SOC_DAPM_PGA("SPKOUTL Output", WM8962_CLASS_D_CONTROL_1, 6, 0, NULL, 0), SND_SOC_DAPM_OUTPUT("SPKOUTL"), SND_SOC_DAPM_OUTPUT("SPKOUTR"), }; static const struct snd_soc_dapm_route wm8962_intercon[] = { { "INPGAL", "IN1L Switch", "IN1L" }, { "INPGAL", "IN2L Switch", "IN2L" }, { "INPGAL", "IN3L Switch", "IN3L" }, { "INPGAL", "IN4L Switch", "IN4L" }, { "INPGAR", "IN1R Switch", "IN1R" }, { "INPGAR", "IN2R Switch", "IN2R" }, { "INPGAR", "IN3R Switch", "IN3R" }, { "INPGAR", "IN4R Switch", "IN4R" }, { "MIXINL", "IN2L Switch", "IN2L" }, { "MIXINL", "IN3L Switch", "IN3L" }, { "MIXINL", "PGA Switch", "INPGAL" }, { "MIXINR", "IN2R Switch", "IN2R" }, { "MIXINR", "IN3R Switch", "IN3R" }, { "MIXINR", "PGA Switch", "INPGAR" }, { "ADCL", NULL, "SYSCLK" }, { "ADCL", NULL, "TOCLK" }, { "ADCL", NULL, "MIXINL" }, { "ADCR", NULL, "SYSCLK" }, { "ADCR", NULL, "TOCLK" }, { "ADCR", NULL, "MIXINR" }, { "STL", "Left", "ADCL" }, { "STL", "Right", "ADCR" }, { "STR", "Left", "ADCL" }, { "STR", "Right", "ADCR" }, { "DACL", NULL, "SYSCLK" }, { "DACL", NULL, "TOCLK" }, { "DACL", NULL, "Beep" }, { "DACL", NULL, "STL" }, { "DACR", NULL, "SYSCLK" }, { "DACR", NULL, "TOCLK" }, { "DACR", NULL, "Beep" }, { "DACR", NULL, "STR" }, { "HPMIXL", "IN4L Switch", "IN4L" }, { "HPMIXL", "IN4R Switch", "IN4R" }, { "HPMIXL", "DACL Switch", "DACL" }, { "HPMIXL", "DACR Switch", "DACR" }, { "HPMIXL", "MIXINL Switch", "MIXINL" }, { "HPMIXL", "MIXINR Switch", "MIXINR" }, { "HPMIXR", "IN4L Switch", "IN4L" }, { "HPMIXR", "IN4R Switch", "IN4R" }, { "HPMIXR", "DACL Switch", "DACL" }, { "HPMIXR", "DACR Switch", "DACR" }, { "HPMIXR", "MIXINL Switch", "MIXINL" }, { "HPMIXR", "MIXINR Switch", "MIXINR" }, { "Left Bypass", NULL, "HPMIXL" }, { "Left Bypass", NULL, "Class G" }, { "Right Bypass", NULL, "HPMIXR" }, { "Right Bypass", NULL, "Class G" }, { "HPOUTL PGA", "Mixer", "Left Bypass" }, { "HPOUTL PGA", "DAC", "DACL" }, { "HPOUTR PGA", "Mixer", "Right Bypass" }, { "HPOUTR PGA", "DAC", "DACR" }, { "HPOUT", NULL, "HPOUTL PGA" }, { "HPOUT", NULL, "HPOUTR PGA" }, { "HPOUT", NULL, "Charge Pump" }, { "HPOUT", NULL, "SYSCLK" }, { "HPOUT", NULL, "TOCLK" }, { "HPOUTL", NULL, "HPOUT" }, { "HPOUTR", NULL, "HPOUT" }, }; static const struct snd_soc_dapm_route wm8962_spk_mono_intercon[] = { { "Speaker Mixer", "IN4L Switch", "IN4L" }, { "Speaker Mixer", "IN4R Switch", "IN4R" }, { "Speaker Mixer", "DACL Switch", "DACL" }, { "Speaker Mixer", "DACR Switch", "DACR" }, { "Speaker Mixer", "MIXINL Switch", "MIXINL" }, { "Speaker Mixer", "MIXINR Switch", "MIXINR" }, { "Speaker PGA", "Mixer", "Speaker Mixer" }, { "Speaker PGA", "DAC", "DACL" }, { "Speaker Output", NULL, "Speaker PGA" }, { "Speaker Output", NULL, "SYSCLK" }, { "Speaker Output", NULL, "TOCLK" }, { "SPKOUT", NULL, "Speaker Output" }, }; static const struct snd_soc_dapm_route wm8962_spk_stereo_intercon[] = { { "SPKOUTL Mixer", "IN4L Switch", "IN4L" }, { "SPKOUTL Mixer", "IN4R Switch", "IN4R" }, { "SPKOUTL Mixer", "DACL Switch", "DACL" }, { "SPKOUTL Mixer", "DACR Switch", "DACR" }, { "SPKOUTL Mixer", "MIXINL Switch", "MIXINL" }, { "SPKOUTL Mixer", "MIXINR Switch", "MIXINR" }, { "SPKOUTR Mixer", "IN4L Switch", "IN4L" }, { "SPKOUTR Mixer", "IN4R Switch", "IN4R" }, { "SPKOUTR Mixer", "DACL Switch", "DACL" }, { "SPKOUTR Mixer", "DACR Switch", "DACR" }, { "SPKOUTR Mixer", "MIXINL Switch", "MIXINL" }, { "SPKOUTR Mixer", "MIXINR Switch", "MIXINR" }, { "SPKOUTL PGA", "Mixer", "SPKOUTL Mixer" }, { "SPKOUTL PGA", "DAC", "DACL" }, { "SPKOUTR PGA", "Mixer", "SPKOUTR Mixer" }, { "SPKOUTR PGA", "DAC", "DACR" }, { "SPKOUTL Output", NULL, "SPKOUTL PGA" }, { "SPKOUTL Output", NULL, "SYSCLK" }, { "SPKOUTL Output", NULL, "TOCLK" }, { "SPKOUTR Output", NULL, "SPKOUTR PGA" }, { "SPKOUTR Output", NULL, "SYSCLK" }, { "SPKOUTR Output", NULL, "TOCLK" }, { "SPKOUTL", NULL, "SPKOUTL Output" }, { "SPKOUTR", NULL, "SPKOUTR Output" }, }; static int wm8962_add_widgets(struct snd_soc_codec *codec) { struct wm8962_pdata *pdata = dev_get_platdata(codec->dev); snd_soc_add_controls(codec, wm8962_snd_controls, ARRAY_SIZE(wm8962_snd_controls)); if (pdata && pdata->spk_mono) snd_soc_add_controls(codec, wm8962_spk_mono_controls, ARRAY_SIZE(wm8962_spk_mono_controls)); else snd_soc_add_controls(codec, wm8962_spk_stereo_controls, ARRAY_SIZE(wm8962_spk_stereo_controls)); snd_soc_dapm_new_controls(codec, wm8962_dapm_widgets, ARRAY_SIZE(wm8962_dapm_widgets)); if (pdata && pdata->spk_mono) snd_soc_dapm_new_controls(codec, wm8962_dapm_spk_mono_widgets, ARRAY_SIZE(wm8962_dapm_spk_mono_widgets)); else snd_soc_dapm_new_controls(codec, wm8962_dapm_spk_stereo_widgets, ARRAY_SIZE(wm8962_dapm_spk_stereo_widgets)); snd_soc_dapm_add_routes(codec, wm8962_intercon, ARRAY_SIZE(wm8962_intercon)); if (pdata && pdata->spk_mono) snd_soc_dapm_add_routes(codec, wm8962_spk_mono_intercon, ARRAY_SIZE(wm8962_spk_mono_intercon)); else snd_soc_dapm_add_routes(codec, wm8962_spk_stereo_intercon, ARRAY_SIZE(wm8962_spk_stereo_intercon)); snd_soc_dapm_disable_pin(codec, "Beep"); return 0; } static void wm8962_sync_cache(struct snd_soc_codec *codec) { struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); int i; if (!codec->cache_sync) return; dev_dbg(codec->dev, "Syncing cache\n"); codec->cache_only = 0; /* Sync back cached values if they're different from the * hardware default. */ for (i = 1; i < ARRAY_SIZE(wm8962->reg_cache); i++) { if (i == WM8962_SOFTWARE_RESET) continue; if (wm8962->reg_cache[i] == wm8962_reg[i]) continue; snd_soc_write(codec, i, wm8962->reg_cache[i]); } codec->cache_sync = 0; } /* -1 for reserved values */ static const int bclk_divs[] = { 1, -1, 2, 3, 4, -1, 6, 8, -1, 12, 16, 24, -1, 32, 32, 32 }; static void wm8962_configure_bclk(struct snd_soc_codec *codec) { struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); int dspclk, i; int clocking2 = 0; int aif2 = 0; /* If the CODEC is powered on we can configure BCLK */ if (codec->bias_level != SND_SOC_BIAS_OFF) { dev_dbg(codec->dev, "Bias is off, can't configure BCLK\n"); return; } if (!wm8962->bclk) { dev_dbg(codec->dev, "No BCLK rate configured\n"); return; } dspclk = snd_soc_read(codec, WM8962_CLOCKING1); if (dspclk < 0) { dev_err(codec->dev, "Failed to read DSPCLK: %d\n", dspclk); return; } dspclk = (dspclk & WM8962_DSPCLK_DIV_MASK) >> WM8962_DSPCLK_DIV_SHIFT; switch (dspclk) { case 0: dspclk = wm8962->sysclk_rate; break; case 1: dspclk = wm8962->sysclk_rate / 2; break; case 2: dspclk = wm8962->sysclk_rate / 4; break; default: dev_warn(codec->dev, "Unknown DSPCLK divisor read back\n"); dspclk = wm8962->sysclk; } dev_dbg(codec->dev, "DSPCLK is %dHz, BCLK %d\n", dspclk, wm8962->bclk); /* We're expecting an exact match */ for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) { if (bclk_divs[i] < 0) continue; if (dspclk / bclk_divs[i] == wm8962->bclk) { dev_dbg(codec->dev, "Selected BCLK_DIV %d for %dHz\n", bclk_divs[i], wm8962->bclk); clocking2 |= i; break; } } if (i == ARRAY_SIZE(bclk_divs)) { dev_err(codec->dev, "Unsupported BCLK ratio %d\n", dspclk / wm8962->bclk); return; } aif2 |= wm8962->bclk / wm8962->lrclk; dev_dbg(codec->dev, "Selected LRCLK divisor %d for %dHz\n", wm8962->bclk / wm8962->lrclk, wm8962->lrclk); snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_BCLK_DIV_MASK, clocking2); snd_soc_update_bits(codec, WM8962_AUDIO_INTERFACE_2, WM8962_AIF_RATE_MASK, aif2); } static int wm8962_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); int ret; if (level == codec->bias_level) return 0; switch (level) { case SND_SOC_BIAS_ON: break; case SND_SOC_BIAS_PREPARE: /* VMID 2*50k */ snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, WM8962_VMID_SEL_MASK, 0x80); break; case SND_SOC_BIAS_STANDBY: if (codec->bias_level == SND_SOC_BIAS_OFF) { ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); if (ret != 0) { dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); return ret; } wm8962_sync_cache(codec); snd_soc_update_bits(codec, WM8962_ANTI_POP, WM8962_STARTUP_BIAS_ENA | WM8962_VMID_BUF_ENA, WM8962_STARTUP_BIAS_ENA | WM8962_VMID_BUF_ENA); /* Bias enable at 2*50k for ramp */ snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, WM8962_VMID_SEL_MASK | WM8962_BIAS_ENA, WM8962_BIAS_ENA | 0x180); msleep(5); snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_CLKREG_OVD, WM8962_CLKREG_OVD); wm8962_configure_bclk(codec); } /* VMID 2*250k */ snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, WM8962_VMID_SEL_MASK, 0x100); break; case SND_SOC_BIAS_OFF: snd_soc_update_bits(codec, WM8962_PWR_MGMT_1, WM8962_VMID_SEL_MASK | WM8962_BIAS_ENA, 0); snd_soc_update_bits(codec, WM8962_ANTI_POP, WM8962_STARTUP_BIAS_ENA | WM8962_VMID_BUF_ENA, 0); regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); break; } codec->bias_level = level; return 0; } static const struct { int rate; int reg; } sr_vals[] = { { 48000, 0 }, { 44100, 0 }, { 32000, 1 }, { 22050, 2 }, { 24000, 2 }, { 16000, 3 }, { 11025, 4 }, { 12000, 4 }, { 8000, 5 }, { 88200, 6 }, { 96000, 6 }, }; static const int sysclk_rates[] = { 64, 128, 192, 256, 384, 512, 768, 1024, 1408, 1536, }; static int wm8962_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_device *socdev = rtd->socdev; struct snd_soc_codec *codec = socdev->card->codec; struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); int rate = params_rate(params); int i; int aif0 = 0; int adctl3 = 0; int clocking4 = 0; wm8962->bclk = snd_soc_params_to_bclk(params); wm8962->lrclk = params_rate(params); for (i = 0; i < ARRAY_SIZE(sr_vals); i++) { if (sr_vals[i].rate == rate) { adctl3 |= sr_vals[i].reg; break; } } if (i == ARRAY_SIZE(sr_vals)) { dev_err(codec->dev, "Unsupported rate %dHz\n", rate); return -EINVAL; } if (rate % 8000 == 0) adctl3 |= WM8962_SAMPLE_RATE_INT_MODE; for (i = 0; i < ARRAY_SIZE(sysclk_rates); i++) { if (sysclk_rates[i] == wm8962->sysclk_rate / rate) { clocking4 |= i << WM8962_SYSCLK_RATE_SHIFT; break; } } if (i == ARRAY_SIZE(sysclk_rates)) { dev_err(codec->dev, "Unsupported sysclk ratio %d\n", wm8962->sysclk_rate / rate); return -EINVAL; } switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: break; case SNDRV_PCM_FORMAT_S20_3LE: aif0 |= 0x40; break; case SNDRV_PCM_FORMAT_S24_LE: aif0 |= 0x80; break; case SNDRV_PCM_FORMAT_S32_LE: aif0 |= 0xc0; break; default: return -EINVAL; } snd_soc_update_bits(codec, WM8962_AUDIO_INTERFACE_0, WM8962_WL_MASK, aif0); snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_3, WM8962_SAMPLE_RATE_INT_MODE | WM8962_SAMPLE_RATE_MASK, adctl3); snd_soc_update_bits(codec, WM8962_CLOCKING_4, WM8962_SYSCLK_RATE_MASK, clocking4); wm8962_configure_bclk(codec); return 0; } static int wm8962_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = dai->codec; struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); int src; switch (clk_id) { case WM8962_SYSCLK_MCLK: wm8962->sysclk = WM8962_SYSCLK_MCLK; src = 0; break; case WM8962_SYSCLK_FLL: wm8962->sysclk = WM8962_SYSCLK_FLL; src = 1 << WM8962_SYSCLK_SRC_SHIFT; WARN_ON(freq != wm8962->fll_fout); break; default: return -EINVAL; } snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_SYSCLK_SRC_MASK, src); wm8962->sysclk_rate = freq; return 0; } static int wm8962_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_codec *codec = dai->codec; int aif0 = 0; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_DSP_A: aif0 |= WM8962_LRCLK_INV; case SND_SOC_DAIFMT_DSP_B: aif0 |= 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; case SND_SOC_DAIFMT_RIGHT_J: break; case SND_SOC_DAIFMT_LEFT_J: aif0 |= 1; break; case SND_SOC_DAIFMT_I2S: aif0 |= 2; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_IB_NF: aif0 |= WM8962_BCLK_INV; break; case SND_SOC_DAIFMT_NB_IF: aif0 |= WM8962_LRCLK_INV; break; case SND_SOC_DAIFMT_IB_IF: aif0 |= WM8962_BCLK_INV | WM8962_LRCLK_INV; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: aif0 |= WM8962_MSTR; break; case SND_SOC_DAIFMT_CBS_CFS: break; default: return -EINVAL; } snd_soc_update_bits(codec, WM8962_AUDIO_INTERFACE_0, WM8962_FMT_MASK | WM8962_BCLK_INV | WM8962_MSTR | WM8962_LRCLK_INV, aif0); return 0; } struct _fll_div { u16 fll_fratio; u16 fll_outdiv; u16 fll_refclk_div; u16 n; u16 theta; u16 lambda; }; /* 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) { unsigned int target; unsigned int div; unsigned int fratio, gcd_fll; int i; /* Fref must be <=13.5MHz */ div = 1; fll_div->fll_refclk_div = 0; while ((Fref / div) > 13500000) { div *= 2; fll_div->fll_refclk_div++; if (div > 4) { pr_err("Can't scale %dMHz input down to <=13.5MHz\n", Fref); return -EINVAL; } } pr_debug("FLL 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 = 2; 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("FLL 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; fratio = 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; } fll_div->n = target / (fratio * Fref); if (target % Fref == 0) { fll_div->theta = 0; fll_div->lambda = 0; } else { gcd_fll = gcd(target, fratio * Fref); fll_div->theta = (target - (fll_div->n * fratio * Fref)) / gcd_fll; fll_div->lambda = (fratio * Fref) / gcd_fll; } pr_debug("FLL N=%x THETA=%x LAMBDA=%x\n", fll_div->n, fll_div->theta, fll_div->lambda); pr_debug("FLL_FRATIO=%x FLL_OUTDIV=%x FLL_REFCLK_DIV=%x\n", fll_div->fll_fratio, fll_div->fll_outdiv, fll_div->fll_refclk_div); return 0; } static int wm8962_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 wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); struct _fll_div fll_div; int ret; int fll1 = snd_soc_read(codec, WM8962_FLL_CONTROL_1); /* Any change? */ if (source == wm8962->fll_src && Fref == wm8962->fll_fref && Fout == wm8962->fll_fout) return 0; if (Fout == 0) { dev_dbg(codec->dev, "FLL disabled\n"); wm8962->fll_fref = 0; wm8962->fll_fout = 0; snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_ENA, 0); return 0; } ret = fll_factors(&fll_div, Fref, Fout); if (ret != 0) return ret; switch (fll_id) { case WM8962_FLL_MCLK: case WM8962_FLL_BCLK: case WM8962_FLL_OSC: fll1 |= (fll_id - 1) << WM8962_FLL_REFCLK_SRC_SHIFT; break; case WM8962_FLL_INT: snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_OSC_ENA, WM8962_FLL_OSC_ENA); snd_soc_update_bits(codec, WM8962_FLL_CONTROL_5, WM8962_FLL_FRC_NCO, WM8962_FLL_FRC_NCO); break; default: dev_err(codec->dev, "Unknown FLL source %d\n", ret); return -EINVAL; } if (fll_div.theta || fll_div.lambda) fll1 |= WM8962_FLL_FRAC; /* Stop the FLL while we reconfigure */ snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_ENA, 0); snd_soc_update_bits(codec, WM8962_FLL_CONTROL_2, WM8962_FLL_OUTDIV_MASK | WM8962_FLL_REFCLK_DIV_MASK, (fll_div.fll_outdiv << WM8962_FLL_OUTDIV_SHIFT) | (fll_div.fll_refclk_div)); snd_soc_update_bits(codec, WM8962_FLL_CONTROL_3, WM8962_FLL_FRATIO_MASK, fll_div.fll_fratio); snd_soc_write(codec, WM8962_FLL_CONTROL_6, fll_div.theta); snd_soc_write(codec, WM8962_FLL_CONTROL_7, fll_div.lambda); snd_soc_write(codec, WM8962_FLL_CONTROL_8, fll_div.n); snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_FRAC | WM8962_FLL_REFCLK_SRC_MASK | WM8962_FLL_ENA, fll1); dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout); wm8962->fll_fref = Fref; wm8962->fll_fout = Fout; wm8962->fll_src = source; return 0; } static int wm8962_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; int val; if (mute) val = WM8962_DAC_MUTE; else val = 0; return snd_soc_update_bits(codec, WM8962_ADC_DAC_CONTROL_1, WM8962_DAC_MUTE, val); } #define WM8962_RATES SNDRV_PCM_RATE_8000_96000 #define WM8962_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 wm8962_dai_ops = { .hw_params = wm8962_hw_params, .set_sysclk = wm8962_set_dai_sysclk, .set_fmt = wm8962_set_dai_fmt, .set_pll = wm8962_set_fll, .digital_mute = wm8962_mute, }; struct snd_soc_dai wm8962_dai = { .name = "WM8962", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = WM8962_RATES, .formats = WM8962_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, .rates = WM8962_RATES, .formats = WM8962_FORMATS, }, .ops = &wm8962_dai_ops, .symmetric_rates = 1, }; EXPORT_SYMBOL_GPL(wm8962_dai); static int wm8962_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec; int ret = 0; if (wm8962_codec == NULL) { dev_err(&pdev->dev, "Codec device not registered\n"); return -ENODEV; } socdev->card->codec = wm8962_codec; codec = wm8962_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; } wm8962_add_widgets(codec); return ret; pcm_err: return ret; } static int wm8962_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; } #ifdef CONFIG_PM static int wm8962_resume(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec = socdev->card->codec; struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); u16 *reg_cache = codec->reg_cache; int i; /* Restore the registers */ for (i = 1; i < ARRAY_SIZE(wm8962->reg_cache); i++) { switch (i) { case WM8962_SOFTWARE_RESET: continue; default: break; } if (reg_cache[i] != wm8962_reg[i]) snd_soc_write(codec, i, reg_cache[i]); } return 0; } #else #define wm8962_resume NULL #endif struct snd_soc_codec_device soc_codec_dev_wm8962 = { .probe = wm8962_probe, .remove = wm8962_remove, .resume = wm8962_resume, }; EXPORT_SYMBOL_GPL(soc_codec_dev_wm8962); #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) static int beep_rates[] = { 500, 1000, 2000, 4000, }; static void wm8962_beep_work(struct work_struct *work) { struct wm8962_priv *wm8962 = container_of(work, struct wm8962_priv, beep_work); struct snd_soc_codec *codec = &wm8962->codec; int i; int reg = 0; int best = 0; if (wm8962->beep_rate) { for (i = 0; i < ARRAY_SIZE(beep_rates); i++) { if (abs(wm8962->beep_rate - beep_rates[i]) < abs(wm8962->beep_rate - beep_rates[best])) best = i; } dev_dbg(codec->dev, "Set beep rate %dHz for requested %dHz\n", beep_rates[best], wm8962->beep_rate); reg = WM8962_BEEP_ENA | (best << WM8962_BEEP_RATE_SHIFT); snd_soc_dapm_enable_pin(codec, "Beep"); } else { dev_dbg(codec->dev, "Disabling beep\n"); snd_soc_dapm_disable_pin(codec, "Beep"); } snd_soc_update_bits(codec, WM8962_BEEP_GENERATOR_1, WM8962_BEEP_ENA | WM8962_BEEP_RATE_MASK, reg); snd_soc_dapm_sync(codec); } /* For usability define a way of injecting beep events for the device - * many systems will not have a keyboard. */ static int wm8962_beep_event(struct input_dev *dev, unsigned int type, unsigned int code, int hz) { struct snd_soc_codec *codec = input_get_drvdata(dev); struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); dev_dbg(codec->dev, "Beep event %x %x\n", code, hz); switch (code) { case SND_BELL: if (hz) hz = 1000; case SND_TONE: break; default: return -1; } /* Kick the beep from a workqueue */ wm8962->beep_rate = hz; schedule_work(&wm8962->beep_work); return 0; } static ssize_t wm8962_beep_set(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct wm8962_priv *wm8962 = dev_get_drvdata(dev); long int time; strict_strtol(buf, 10, &time); input_event(wm8962->beep, EV_SND, SND_TONE, time); return count; } static DEVICE_ATTR(beep, 0200, NULL, wm8962_beep_set); static void wm8962_init_beep(struct snd_soc_codec *codec) { struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); int ret; wm8962->beep = input_allocate_device(); if (!wm8962->beep) { dev_err(codec->dev, "Failed to allocate beep device\n"); return; } INIT_WORK(&wm8962->beep_work, wm8962_beep_work); wm8962->beep_rate = 0; wm8962->beep->name = "WM8962 Beep Generator"; wm8962->beep->phys = dev_name(codec->dev); wm8962->beep->id.bustype = BUS_I2C; wm8962->beep->evbit[0] = BIT_MASK(EV_SND); wm8962->beep->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); wm8962->beep->event = wm8962_beep_event; wm8962->beep->dev.parent = codec->dev; input_set_drvdata(wm8962->beep, codec); ret = input_register_device(wm8962->beep); if (ret != 0) { input_free_device(wm8962->beep); wm8962->beep = NULL; dev_err(codec->dev, "Failed to register beep device\n"); } ret = device_create_file(codec->dev, &dev_attr_beep); if (ret != 0) { dev_err(codec->dev, "Failed to create keyclick file: %d\n", ret); } } static void wm8962_free_beep(struct snd_soc_codec *codec) { struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec); device_remove_file(codec->dev, &dev_attr_beep); input_unregister_device(wm8962->beep); cancel_work_sync(&wm8962->beep_work); wm8962->beep = NULL; snd_soc_update_bits(codec, WM8962_BEEP_GENERATOR_1, WM8962_BEEP_ENA,0); } #else static void wm8962_init_beep(struct snd_soc_codec *codec) { } static void wm8962_free_beep(struct snd_soc_codec *codec) { } #endif static int wm8962_register(struct wm8962_priv *wm8962, enum snd_soc_control_type control) { int ret; struct snd_soc_codec *codec = &wm8962->codec; struct wm8962_pdata *pdata = dev_get_platdata(codec->dev); int i; if (wm8962_codec) { dev_err(codec->dev, "Another WM8962 is registered\n"); return -EINVAL; } mutex_init(&codec->mutex); INIT_LIST_HEAD(&codec->dapm_widgets); INIT_LIST_HEAD(&codec->dapm_paths); snd_soc_codec_set_drvdata(codec, wm8962); codec->name = "WM8962"; codec->owner = THIS_MODULE; codec->bias_level = SND_SOC_BIAS_OFF; codec->set_bias_level = wm8962_set_bias_level; codec->dai = &wm8962_dai; codec->num_dai = 1; codec->reg_cache_size = WM8962_MAX_REGISTER; codec->reg_cache = &wm8962->reg_cache; codec->volatile_register = wm8962_volatile_register; codec->cache_sync = 1; codec->idle_bias_off = 1; codec->readable_register = wm8962_readable; memcpy(codec->reg_cache, wm8962_reg, sizeof(wm8962_reg)); ret = snd_soc_codec_set_cache_io(codec, 16, 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(wm8962->supplies); i++) wm8962->supplies[i].supply = wm8962_supply_names[i]; ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8962->supplies), wm8962->supplies); if (ret != 0) { dev_err(codec->dev, "Failed to request supplies: %d\n", ret); goto err; } wm8962->disable_nb[0].notifier_call = wm8962_regulator_event_0; wm8962->disable_nb[1].notifier_call = wm8962_regulator_event_1; wm8962->disable_nb[2].notifier_call = wm8962_regulator_event_2; wm8962->disable_nb[3].notifier_call = wm8962_regulator_event_3; wm8962->disable_nb[4].notifier_call = wm8962_regulator_event_4; wm8962->disable_nb[5].notifier_call = wm8962_regulator_event_5; wm8962->disable_nb[6].notifier_call = wm8962_regulator_event_6; wm8962->disable_nb[7].notifier_call = wm8962_regulator_event_7; /* This should really be moved into the regulator core */ for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++) { ret = regulator_register_notifier(wm8962->supplies[i].consumer, &wm8962->disable_nb[i]); if (ret != 0) { dev_err(codec->dev, "Failed to register regulator notifier: %d\n", ret); } } ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); if (ret != 0) { dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); goto err_get; } ret = snd_soc_read(codec, WM8962_SOFTWARE_RESET); if (ret < 0) { dev_err(codec->dev, "Failed to read ID register\n"); goto err_enable; } if (ret != wm8962_reg[WM8962_SOFTWARE_RESET]) { dev_err(codec->dev, "Device is not a WM8962, ID %x != %x\n", ret, wm8962_reg[WM8962_SOFTWARE_RESET]); ret = -EINVAL; goto err_enable; } ret = snd_soc_read(codec, WM8962_RIGHT_INPUT_VOLUME); if (ret < 0) { dev_err(codec->dev, "Failed to read device revision: %d\n", ret); goto err_enable; } dev_info(codec->dev, "customer id %x revision %c\n", (ret & WM8962_CUST_ID_MASK) >> WM8962_CUST_ID_SHIFT, ((ret & WM8962_CHIP_REV_MASK) >> WM8962_CHIP_REV_SHIFT) + 'A'); ret = wm8962_reset(codec); if (ret < 0) { dev_err(codec->dev, "Failed to issue reset\n"); goto err_enable; } /* SYSCLK defaults to on; make sure it is off so we can safely * write to registers if the device is declocked. */ snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_SYSCLK_ENA, 0); regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); if (pdata) { /* Apply static configuration for GPIOs */ for (i = 0; i < ARRAY_SIZE(pdata->gpio_init); i++) if (pdata->gpio_init[i]) snd_soc_write(codec, 0x200 + i, pdata->gpio_init[i] & 0xffff); /* Put the speakers into mono mode? */ if (pdata->spk_mono) wm8962->reg_cache[WM8962_CLASS_D_CONTROL_2] |= WM8962_SPK_MONO; } /* Latch volume update bits */ wm8962->reg_cache[WM8962_LEFT_INPUT_VOLUME] |= WM8962_IN_VU; wm8962->reg_cache[WM8962_RIGHT_INPUT_VOLUME] |= WM8962_IN_VU; wm8962->reg_cache[WM8962_LEFT_ADC_VOLUME] |= WM8962_ADC_VU; wm8962->reg_cache[WM8962_RIGHT_ADC_VOLUME] |= WM8962_ADC_VU; wm8962->reg_cache[WM8962_LEFT_DAC_VOLUME] |= WM8962_DAC_VU; wm8962->reg_cache[WM8962_RIGHT_DAC_VOLUME] |= WM8962_DAC_VU; wm8962->reg_cache[WM8962_SPKOUTL_VOLUME] |= WM8962_SPKOUT_VU; wm8962->reg_cache[WM8962_SPKOUTR_VOLUME] |= WM8962_SPKOUT_VU; wm8962->reg_cache[WM8962_HPOUTL_VOLUME] |= WM8962_HPOUT_VU; wm8962->reg_cache[WM8962_HPOUTR_VOLUME] |= WM8962_HPOUT_VU; wm8962_dai.dev = codec->dev; wm8962_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(&wm8962_dai); if (ret != 0) { dev_err(codec->dev, "Failed to register DAI: %d\n", ret); snd_soc_unregister_codec(codec); return ret; } wm8962_init_beep(codec); return 0; err_enable: regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); err_get: regulator_bulk_free(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); err: kfree(wm8962); return ret; } static void wm8962_unregister(struct wm8962_priv *wm8962) { int i; wm8962_free_beep(&wm8962->codec); wm8962_set_bias_level(&wm8962->codec, SND_SOC_BIAS_OFF); for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++) regulator_unregister_notifier(wm8962->supplies[i].consumer, &wm8962->disable_nb[i]); regulator_bulk_free(ARRAY_SIZE(wm8962->supplies), wm8962->supplies); snd_soc_unregister_dai(&wm8962_dai); snd_soc_unregister_codec(&wm8962->codec); kfree(wm8962); wm8962_codec = NULL; } #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) static __devinit int wm8962_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8962_priv *wm8962; struct snd_soc_codec *codec; wm8962 = kzalloc(sizeof(struct wm8962_priv), GFP_KERNEL); if (wm8962 == NULL) return -ENOMEM; codec = &wm8962->codec; codec->hw_write = (hw_write_t)i2c_master_send; i2c_set_clientdata(i2c, wm8962); codec->control_data = i2c; codec->dev = &i2c->dev; return wm8962_register(wm8962, SND_SOC_I2C); } static __devexit int wm8962_i2c_remove(struct i2c_client *client) { struct wm8962_priv *wm8962 = i2c_get_clientdata(client); wm8962_unregister(wm8962); return 0; } static const struct i2c_device_id wm8962_i2c_id[] = { { "wm8962", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, wm8962_i2c_id); static struct i2c_driver wm8962_i2c_driver = { .driver = { .name = "WM8962", .owner = THIS_MODULE, }, .probe = wm8962_i2c_probe, .remove = __devexit_p(wm8962_i2c_remove), .id_table = wm8962_i2c_id, }; #endif static int __init wm8962_modinit(void) { int ret; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) ret = i2c_add_driver(&wm8962_i2c_driver); if (ret != 0) { printk(KERN_ERR "Failed to register WM8962 I2C driver: %d\n", ret); } #endif return 0; } module_init(wm8962_modinit); static void __exit wm8962_exit(void) { #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) i2c_del_driver(&wm8962_i2c_driver); #endif } module_exit(wm8962_exit); MODULE_DESCRIPTION("ASoC WM8962 driver"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL");