diff options
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/Kconfig | 4 | ||||
| -rw-r--r-- | sound/soc/codecs/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/codecs/wm8974.c | 844 | ||||
| -rw-r--r-- | sound/soc/codecs/wm8974.h | 104 |
4 files changed, 954 insertions, 0 deletions
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 7f78b65..91daffd 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -38,6 +38,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_WM8940 if I2C select SND_SOC_WM8960 if I2C select SND_SOC_WM8971 if I2C + select SND_SOC_WM8974 if I2C select SND_SOC_WM8988 if SND_SOC_I2C_AND_SPI select SND_SOC_WM8990 if I2C select SND_SOC_WM9081 if I2C @@ -151,6 +152,9 @@ config SND_SOC_WM8960 config SND_SOC_WM8971 tristate +config SND_SOC_WM8974 + tristate + config SND_SOC_WM8988 tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 70c55fa..9c67d66 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -26,6 +26,7 @@ snd-soc-wm8903-objs := wm8903.o snd-soc-wm8940-objs := wm8940.o snd-soc-wm8960-objs := wm8960.o snd-soc-wm8971-objs := wm8971.o +snd-soc-wm8974-objs := wm8974.o snd-soc-wm8988-objs := wm8988.o snd-soc-wm8990-objs := wm8990.o snd-soc-wm9081-objs := wm9081.o @@ -59,6 +60,7 @@ obj-$(CONFIG_SND_SOC_WM8753) += snd-soc-wm8753.o obj-$(CONFIG_SND_SOC_WM8900) += snd-soc-wm8900.o obj-$(CONFIG_SND_SOC_WM8903) += snd-soc-wm8903.o obj-$(CONFIG_SND_SOC_WM8971) += snd-soc-wm8971.o +obj-$(CONFIG_SND_SOC_WM8974) += snd-soc-wm8974.o obj-$(CONFIG_SND_SOC_WM8940) += snd-soc-wm8940.o obj-$(CONFIG_SND_SOC_WM8960) += snd-soc-wm8960.o obj-$(CONFIG_SND_SOC_WM8988) += snd-soc-wm8988.o diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c new file mode 100644 index 0000000..2b0c99c --- /dev/null +++ b/sound/soc/codecs/wm8974.c @@ -0,0 +1,844 @@ +/* + * wm8974.c -- WM8974 ALSA Soc Audio driver + * + * Copyright 2006 Wolfson Microelectronics PLC. + * + * Author: Liam Girdwood <liam.girdwood@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/version.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> +#include <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 "wm8974.h" + +#define AUDIO_NAME "wm8974" +#define WM8974_VERSION "0.6" + +struct snd_soc_codec_device soc_codec_dev_wm8974; + +/* + * wm8974 register cache + * We can't read the WM8974 register space when we are + * using 2 wire for device control, so we cache them instead. + */ +static const u16 wm8974_reg[WM8974_CACHEREGNUM] = { + 0x0000, 0x0000, 0x0000, 0x0000, + 0x0050, 0x0000, 0x0140, 0x0000, + 0x0000, 0x0000, 0x0000, 0x00ff, + 0x0000, 0x0000, 0x0100, 0x00ff, + 0x0000, 0x0000, 0x012c, 0x002c, + 0x002c, 0x002c, 0x002c, 0x0000, + 0x0032, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, + 0x0038, 0x000b, 0x0032, 0x0000, + 0x0008, 0x000c, 0x0093, 0x00e9, + 0x0000, 0x0000, 0x0000, 0x0000, + 0x0003, 0x0010, 0x0000, 0x0000, + 0x0000, 0x0002, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0039, 0x0000, + 0x0000, +}; + +/* + * read wm8974 register cache + */ +static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec * codec, + unsigned int reg) +{ + u16 *cache = codec->reg_cache; + if (reg == WM8974_RESET) + return 0; + if (reg >= WM8974_CACHEREGNUM) + return -1; + return cache[reg]; +} + +/* + * write wm8974 register cache + */ +static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec, + u16 reg, unsigned int value) +{ + u16 *cache = codec->reg_cache; + if (reg >= WM8974_CACHEREGNUM) + return; + cache[reg] = value; +} + +/* + * write to the WM8974 register space + */ +static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + u8 data[2]; + + /* data is + * D15..D9 WM8974 register offset + * D8...D0 register data + */ + data[0] = (reg << 1) | ((value >> 8) & 0x0001); + data[1] = value & 0x00ff; + + wm8974_write_reg_cache (codec, reg, value); + if (codec->hw_write(codec->control_data, data, 2) == 2) + return 0; + else + return -EIO; +} + +#define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0) + +static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; +static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; +static const char *wm8974_eqmode[] = {"Capture", "Playback" }; +static const char *wm8974_bw[] = {"Narrow", "Wide" }; +static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; +static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; +static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; +static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; +static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; +static const char *wm8974_alc[] = {"ALC", "Limiter" }; + +static const struct soc_enum wm8974_enum[] = { + SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ + SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ + SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), + SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), + + SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), + SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), + SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), + SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), + + SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), + SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), + SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), + SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), + + SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), + SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), +}; + +static const struct snd_kcontrol_new wm8974_snd_controls[] = { + +SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), + +SOC_ENUM("DAC Companding", wm8974_enum[1]), +SOC_ENUM("ADC Companding", wm8974_enum[0]), + +SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), +SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), + +SOC_SINGLE("PCM Volume", WM8974_DACVOL, 0, 127, 0), + +SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), +SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), +SOC_SINGLE("ADC Inversion Switch", WM8974_COMP, 0, 1, 0), + +SOC_SINGLE("Capture Volume", WM8974_ADCVOL, 0, 127, 0), + +SOC_ENUM("Equaliser Function", wm8974_enum[3]), +SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), +SOC_SINGLE("EQ1 Volume", WM8974_EQ1, 0, 31, 1), + +SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), +SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), +SOC_SINGLE("EQ2 Volume", WM8974_EQ2, 0, 31, 1), + +SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), +SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), +SOC_SINGLE("EQ3 Volume", WM8974_EQ3, 0, 31, 1), + +SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), +SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), +SOC_SINGLE("EQ4 Volume", WM8974_EQ4, 0, 31, 1), + +SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), +SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), +SOC_SINGLE("EQ5 Volume", WM8974_EQ5, 0, 31, 1), + +SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), +SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), +SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), + +SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), +SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), + +SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), +SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), +SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), + +SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), +SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), +SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), + +SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), +SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), +SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), + +SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), +SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), + +SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), +SOC_SINGLE("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0), + +SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), +SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), +SOC_SINGLE("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0), + +SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), +SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 0), +}; + +/* add non dapm controls */ +static int wm8974_add_controls(struct snd_soc_codec *codec) +{ + int err, i; + + for (i = 0; i < ARRAY_SIZE(wm8974_snd_controls); i++) { + err = snd_ctl_add(codec->card, + snd_soc_cnew(&wm8974_snd_controls[i],codec, NULL)); + if (err < 0) + return err; + } + + return 0; +} + +/* Speaker Output Mixer */ +static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { +SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), +SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), +SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), +}; + +/* Mono Output Mixer */ +static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { +SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), +SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), +SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 1), +}; + +/* AUX Input boost vol */ +static const struct snd_kcontrol_new wm8974_aux_boost_controls = +SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); + +/* Mic Input boost vol */ +static const struct snd_kcontrol_new wm8974_mic_boost_controls = +SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); + +/* Capture boost switch */ +static const struct snd_kcontrol_new wm8974_capture_boost_controls = +SOC_DAPM_SINGLE("Capture Boost Switch", WM8974_INPPGA, 6, 1, 0); + +/* Aux In to PGA */ +static const struct snd_kcontrol_new wm8974_aux_capture_boost_controls = +SOC_DAPM_SINGLE("Aux Capture Boost Switch", WM8974_INPPGA, 2, 1, 0); + +/* Mic P In to PGA */ +static const struct snd_kcontrol_new wm8974_micp_capture_boost_controls = +SOC_DAPM_SINGLE("Mic P Capture Boost Switch", WM8974_INPPGA, 0, 1, 0); + +/* Mic N In to PGA */ +static const struct snd_kcontrol_new wm8974_micn_capture_boost_controls = +SOC_DAPM_SINGLE("Mic N Capture Boost Switch", WM8974_INPPGA, 1, 1, 0); + +static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { +SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, + &wm8974_speaker_mixer_controls[0], + ARRAY_SIZE(wm8974_speaker_mixer_controls)), +SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, + &wm8974_mono_mixer_controls[0], + ARRAY_SIZE(wm8974_mono_mixer_controls)), +SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), +SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER3, 0, 0), +SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), +SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), +SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), +SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), +SND_SOC_DAPM_PGA("Mic PGA", WM8974_POWER2, 2, 0, NULL, 0), + +SND_SOC_DAPM_PGA("Aux Boost", SND_SOC_NOPM, 0, 0, + &wm8974_aux_boost_controls, 1), +SND_SOC_DAPM_PGA("Mic Boost", SND_SOC_NOPM, 0, 0, + &wm8974_mic_boost_controls, 1), +SND_SOC_DAPM_SWITCH("Capture Boost", SND_SOC_NOPM, 0, 0, + &wm8974_capture_boost_controls), + +SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, NULL, 0), + +SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), + +SND_SOC_DAPM_INPUT("MICN"), +SND_SOC_DAPM_INPUT("MICP"), +SND_SOC_DAPM_INPUT("AUX"), +SND_SOC_DAPM_OUTPUT("MONOOUT"), +SND_SOC_DAPM_OUTPUT("SPKOUTP"), +SND_SOC_DAPM_OUTPUT("SPKOUTN"), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + /* Mono output mixer */ + {"Mono Mixer", "PCM Playback Switch", "DAC"}, + {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, + {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, + + /* Speaker output mixer */ + {"Speaker Mixer", "PCM Playback Switch", "DAC"}, + {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, + {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, + + /* Outputs */ + {"Mono Out", NULL, "Mono Mixer"}, + {"MONOOUT", NULL, "Mono Out"}, + {"SpkN Out", NULL, "Speaker Mixer"}, + {"SpkP Out", NULL, "Speaker Mixer"}, + {"SPKOUTN", NULL, "SpkN Out"}, + {"SPKOUTP", NULL, "SpkP Out"}, + + /* Boost Mixer */ + {"Boost Mixer", NULL, "ADC"}, + {"Capture Boost Switch", "Aux Capture Boost Switch", "AUX"}, + {"Aux Boost", "Aux Volume", "Boost Mixer"}, + {"Capture Boost", "Capture Switch", "Boost Mixer"}, + {"Mic Boost", "Mic Volume", "Boost Mixer"}, + + /* Inputs */ + {"MICP", NULL, "Mic Boost"}, + {"MICN", NULL, "Mic PGA"}, + {"Mic PGA", NULL, "Capture Boost"}, + {"AUX", NULL, "Aux Input"}, +}; + +static int wm8974_add_widgets(struct snd_soc_codec *codec) +{ + snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, + ARRAY_SIZE(wm8974_dapm_widgets)); + + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_dapm_new_widgets(codec); + return 0; +} + +struct pll_ { + unsigned int in_hz, out_hz; + unsigned int pre:4; /* prescale - 1 */ + unsigned int n:4; + unsigned int k; +}; + +static struct pll_ pll[] = { + {12000000, 11289600, 0, 7, 0x86c220}, + {12000000, 12288000, 0, 8, 0x3126e8}, + {13000000, 11289600, 0, 6, 0xf28bd4}, + {13000000, 12288000, 0, 7, 0x8fd525}, + {12288000, 11289600, 0, 7, 0x59999a}, + {11289600, 12288000, 0, 8, 0x80dee9}, + /* liam - add more entries */ +}; + +static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, + int pll_id, unsigned int freq_in, unsigned int freq_out) +{ + struct snd_soc_codec *codec = codec_dai->codec; + int i; + u16 reg; + + if(freq_in == 0 || freq_out == 0) { + reg = wm8974_read_reg_cache(codec, WM8974_POWER1); + wm8974_write(codec, WM8974_POWER1, reg & 0x1df); + return 0; + } + + for(i = 0; i < ARRAY_SIZE(pll); i++) { + if (freq_in == pll[i].in_hz && freq_out == pll[i].out_hz) { + wm8974_write(codec, WM8974_PLLN, (pll[i].pre << 4) | pll[i].n); + wm8974_write(codec, WM8974_PLLK1, pll[i].k >> 18); + wm8974_write(codec, WM8974_PLLK2, (pll[i].k >> 9) & 0x1ff); + wm8974_write(codec, WM8974_PLLK3, pll[i].k & 0x1ff); + reg = wm8974_read_reg_cache(codec, WM8974_POWER1); + wm8974_write(codec, WM8974_POWER1, reg | 0x020); + return 0; + } + } + return -EINVAL; +} + +/* + * Configure WM8974 clock dividers. + */ +static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, + int div_id, int div) +{ + struct snd_soc_codec *codec = codec_dai->codec; + u16 reg; + + switch (div_id) { + case WM8974_OPCLKDIV: + reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf; + wm8974_write(codec, WM8974_GPIO, reg | div); + break; + case WM8974_MCLKDIV: + reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f; + wm8974_write(codec, WM8974_CLOCK, reg | div); + break; + case WM8974_ADCCLK: + reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7; + wm8974_write(codec, WM8974_ADC, reg | div); + break; + case WM8974_DACCLK: + reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7; + wm8974_write(codec, WM8974_DAC, reg | div); + break; + case WM8974_BCLKDIV: + reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3; + wm8974_write(codec, WM8974_CLOCK, reg | div); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + u16 iface = 0; + u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe; + + /* set master/slave audio interface */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + clk |= 0x0001; + break; + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + return -EINVAL; + } + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + iface |= 0x0010; + break; + case SND_SOC_DAIFMT_RIGHT_J: + break; + case SND_SOC_DAIFMT_LEFT_J: + iface |= 0x0008; + break; + case SND_SOC_DAIFMT_DSP_A: + iface |= 0x00018; + break; + default: + return -EINVAL; + } + + /* clock inversion */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_IF: + iface |= 0x0180; + break; + case SND_SOC_DAIFMT_IB_NF: + iface |= 0x0100; + break; + case SND_SOC_DAIFMT_NB_IF: + iface |= 0x0080; + break; + default: + return -EINVAL; + } + + wm8974_write(codec, WM8974_IFACE, iface); + wm8974_write(codec, WM8974_CLOCK, clk); + return 0; +} + +static int wm8974_pcm_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; + u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f; + u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1; + + /* bit size */ + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + break; + case SNDRV_PCM_FORMAT_S20_3LE: + iface |= 0x0020; + break; + case SNDRV_PCM_FORMAT_S24_LE: + iface |= 0x0040; + break; + case SNDRV_PCM_FORMAT_S32_LE: + iface |= 0x0060; + break; + } + + /* filter coefficient */ + switch (params_rate(params)) { + case SNDRV_PCM_RATE_8000: + adn |= 0x5 << 1; + break; + case SNDRV_PCM_RATE_11025: + adn |= 0x4 << 1; + break; + case SNDRV_PCM_RATE_16000: + adn |= 0x3 << 1; + break; + case SNDRV_PCM_RATE_22050: + adn |= 0x2 << 1; + break; + case SNDRV_PCM_RATE_32000: + adn |= 0x1 << 1; + break; + case SNDRV_PCM_RATE_44100: + break; + } + + wm8974_write(codec, WM8974_IFACE, iface); + wm8974_write(codec, WM8974_ADD, adn); + return 0; +} + +static int wm8974_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf; + + if(mute) + wm8974_write(codec, WM8974_DAC, mute_reg | 0x40); + else + wm8974_write(codec, WM8974_DAC, mute_reg); + return 0; +} + +/* liam need to make this lower power with dapm */ +static int wm8974_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + switch (level) { + case SND_SOC_BIAS_ON: + wm8974_write(codec, WM8974_POWER1, 0x1ff); + wm8974_write(codec, WM8974_POWER2, 0x1ff); + wm8974_write(codec, WM8974_POWER3, 0x1ff); + break; + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + break; + case SND_SOC_BIAS_OFF: + wm8974_write(codec, WM8974_POWER1, 0x0); + wm8974_write(codec, WM8974_POWER2, 0x0); + wm8974_write(codec, WM8974_POWER3, 0x0); + break; + } + codec->bias_level = level; + return 0; +} + +#define WM8974_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ + SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000) + +#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ + SNDRV_PCM_FMTBIT_S24_LE) + +static struct snd_soc_dai_ops wm8974_ops = { + .hw_params = wm8974_pcm_hw_params, + .digital_mute = wm8974_mute, + .set_fmt = wm8974_set_dai_fmt, + .set_clkdiv = wm8974_set_dai_clkdiv, + .set_pll = wm8974_set_dai_pll, +}; + +struct snd_soc_dai wm8974_dai = { + .name = "WM8974 HiFi", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 1, + .rates = WM8974_RATES, + .formats = WM8974_FORMATS,}, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 1, + .rates = WM8974_RATES, + .formats = WM8974_FORMATS,}, + .ops = &wm8974_ops, +}; +EXPORT_SYMBOL_GPL(wm8974_dai); + +static int wm8974_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; + + wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); + return 0; +} + +static int wm8974_resume(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + int i; + u8 data[2]; + u16 *cache = codec->reg_cache; + + /* Sync reg_cache with the hardware */ + for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { + data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); + data[1] = cache[i] & 0x00ff; + codec->hw_write(codec->control_data, data, 2); + } + wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + wm8974_set_bias_level(codec, codec->suspend_bias_level); + return 0; +} + +/* + * initialise the WM8974 driver + * register the mixer and dsp interfaces with the kernel + */ +static int wm8974_init(struct snd_soc_device *socdev) +{ + struct snd_soc_codec *codec = socdev->card->codec; + int ret = 0; + + codec->name = "WM8974"; + codec->owner = THIS_MODULE; + codec->read = wm8974_read_reg_cache; + codec->write = wm8974_write; + codec->set_bias_level = wm8974_set_bias_level; + codec->dai = &wm8974_dai; + codec->num_dai = 1; + codec->reg_cache_size = ARRAY_SIZE(wm8974_reg); + codec->reg_cache = kmemdup(wm8974_reg, sizeof(wm8974_reg), GFP_KERNEL); + + if (codec->reg_cache == NULL) + return -ENOMEM; + + wm8974_reset(codec); + + /* register pcms */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if(ret < 0) { + printk(KERN_ERR "wm8974: failed to create pcms\n"); + goto pcm_err; + } + + /* power on device */ + wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + wm8974_add_controls(codec); + wm8974_add_widgets(codec); + ret = snd_soc_init_card(socdev); + if (ret < 0) { + printk(KERN_ERR "wm8974: failed to register card\n"); + goto card_err; + } + return ret; + +card_err: + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); +pcm_err: + kfree(codec->reg_cache); + return ret; +} + +static struct snd_soc_device *wm8974_socdev; + +#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) + +/* + * WM8974 2 wire address is 0x1a + */ +#define I2C_DRIVERID_WM8974 0xfefe /* liam - need a proper id */ + +static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; + +/* Magic definition of all other variables and things */ +I2C_CLIENT_INSMOD; + +static struct i2c_driver wm8974_i2c_driver; +static struct i2c_client client_template; + +/* If the i2c layer weren't so broken, we could pass this kind of data + around */ + +static int wm8974_codec_probe(struct i2c_adapter *adap, int addr, int kind) +{ + struct snd_soc_device *socdev = wm8974_socdev; + struct wm8974_setup_data *setup = socdev->codec_data; + struct snd_soc_codec *codec = socdev->card->codec; + struct i2c_client *i2c; + int ret; + + if (addr != setup->i2c_address) + return -ENODEV; + + client_template.adapter = adap; + client_template.addr = addr; + + i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL); + if (i2c == NULL) { + kfree(codec); + return -ENOMEM; + } + i2c_set_clientdata(i2c, codec); + codec->control_data = i2c; + + ret = i2c_attach_client(i2c); + if (ret < 0) { + pr_err("failed to attach codec at addr %x\n", addr); + goto err; + } + + ret = wm8974_init(socdev); + if (ret < 0) { + pr_err("failed to initialise WM8974\n"); + goto err; + } + return ret; + +err: + kfree(codec); + kfree(i2c); + return ret; +} + +static int wm8974_i2c_detach(struct i2c_client *client) +{ + struct snd_soc_codec *codec = i2c_get_clientdata(client); + i2c_detach_client(client); + kfree(codec->reg_cache); + kfree(client); + return 0; +} + +static int wm8974_i2c_attach(struct i2c_adapter *adap) +{ + return i2c_probe(adap, &addr_data, wm8974_codec_probe); +} + +/* corgi i2c codec control layer */ +static struct i2c_driver wm8974_i2c_driver = { + .driver = { + .name = "WM8974 I2C Codec", + .owner = THIS_MODULE, + }, + .id = I2C_DRIVERID_WM8974, + .attach_adapter = wm8974_i2c_attach, + .detach_client = wm8974_i2c_detach, + .command = NULL, +}; + +static struct i2c_client client_template = { + .name = "WM8974", + .driver = &wm8974_i2c_driver, +}; +#endif + +static int wm8974_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct wm8974_setup_data *setup; + struct snd_soc_codec *codec; + int ret = 0; + + pr_info("WM8974 Audio Codec %s", WM8974_VERSION); + + setup = socdev->codec_data; + codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); + if (codec == NULL) + return -ENOMEM; + + socdev->card->codec = codec; + mutex_init(&codec->mutex); + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + + wm8974_socdev = socdev; +#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) + if (setup->i2c_address) { + normal_i2c[0] = setup->i2c_address; + codec->hw_write = (hw_write_t)i2c_master_send; + ret = i2c_add_driver(&wm8974_i2c_driver); + if (ret != 0) + printk(KERN_ERR "can't add i2c driver"); + } +#else + /* Add other interfaces here */ +#endif + return ret; +} + +/* power down chip */ +static int wm8974_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + if (codec->control_data) + wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); + + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); +#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) + i2c_del_driver(&wm8974_i2c_driver); +#endif + kfree(codec); + + return 0; +} + +struct snd_soc_codec_device soc_codec_dev_wm8974 = { + .probe = wm8974_probe, + .remove = wm8974_remove, + .suspend = wm8974_suspend, + .resume = wm8974_resume, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); + +static int __init wm8974_modinit(void) +{ + return snd_soc_register_dai(&wm8974_dai); +} +module_init(wm8974_modinit); + +static void __exit wm8974_exit(void) +{ + snd_soc_unregister_dai(&wm8974_dai); +} +module_exit(wm8974_exit); + +MODULE_DESCRIPTION("ASoC WM8974 driver"); +MODULE_AUTHOR("Liam Girdwood"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/wm8974.h b/sound/soc/codecs/wm8974.h new file mode 100644 index 0000000..0f5172e --- /dev/null +++ b/sound/soc/codecs/wm8974.h @@ -0,0 +1,104 @@ +/* + * wm8974.h -- WM8974 Soc Audio driver + * + * 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. + */ + +#ifndef _WM8974_H +#define _WM8974_H + +/* WM8974 register space */ + +#define WM8974_RESET 0x0 +#define WM8974_POWER1 0x1 +#define WM8974_POWER2 0x2 +#define WM8974_POWER3 0x3 +#define WM8974_IFACE 0x4 +#define WM8974_COMP 0x5 +#define WM8974_CLOCK 0x6 +#define WM8974_ADD 0x7 +#define WM8974_GPIO 0x8 +#define WM8974_DAC 0xa +#define WM8974_DACVOL 0xb +#define WM8974_ADC 0xe +#define WM8974_ADCVOL 0xf +#define WM8974_EQ1 0x12 +#define WM8974_EQ2 0x13 +#define WM8974_EQ3 0x14 +#define WM8974_EQ4 0x15 +#define WM8974_EQ5 0x16 +#define WM8974_DACLIM1 0x18 +#define WM8974_DACLIM2 0x19 +#define WM8974_NOTCH1 0x1b +#define WM8974_NOTCH2 0x1c +#define WM8974_NOTCH3 0x1d +#define WM8974_NOTCH4 0x1e +#define WM8974_ALC1 0x20 +#define WM8974_ALC2 0x21 +#define WM8974_ALC3 0x22 +#define WM8974_NGATE 0x23 +#define WM8974_PLLN 0x24 +#define WM8974_PLLK1 0x25 +#define WM8974_PLLK2 0x26 +#define WM8974_PLLK3 0x27 +#define WM8974_ATTEN 0x28 +#define WM8974_INPUT 0x2c +#define WM8974_INPPGA 0x2d +#define WM8974_ADCBOOST 0x2f +#define WM8974_OUTPUT 0x31 +#define WM8974_SPKMIX 0x32 +#define WM8974_SPKVOL 0x36 +#define WM8974_MONOMIX 0x38 + +#define WM8974_CACHEREGNUM 57 + +/* Clock divider Id's */ +#define WM8974_OPCLKDIV 0 +#define WM8974_MCLKDIV 1 +#define WM8974_ADCCLK 2 +#define WM8974_DACCLK 3 +#define WM8974_BCLKDIV 4 + +/* DAC clock dividers */ +#define WM8974_DACCLK_F2 (1 << 3) +#define WM8974_DACCLK_F4 (0 << 3) + +/* ADC clock dividers */ +#define WM8974_ADCCLK_F2 (1 << 3) +#define WM8974_ADCCLK_F4 (0 << 3) + +/* PLL Out dividers */ +#define WM8974_OPCLKDIV_1 (0 << 4) +#define WM8974_OPCLKDIV_2 (1 << 4) +#define WM8974_OPCLKDIV_3 (2 << 4) +#define WM8974_OPCLKDIV_4 (3 << 4) + +/* BCLK clock dividers */ +#define WM8974_BCLKDIV_1 (0 << 2) +#define WM8974_BCLKDIV_2 (1 << 2) +#define WM8974_BCLKDIV_4 (2 << 2) +#define WM8974_BCLKDIV_8 (3 << 2) +#define WM8974_BCLKDIV_16 (4 << 2) +#define WM8974_BCLKDIV_32 (5 << 2) + +/* MCLK clock dividers */ +#define WM8974_MCLKDIV_1 (0 << 5) +#define WM8974_MCLKDIV_1_5 (1 << 5) +#define WM8974_MCLKDIV_2 (2 << 5) +#define WM8974_MCLKDIV_3 (3 << 5) +#define WM8974_MCLKDIV_4 (4 << 5) +#define WM8974_MCLKDIV_6 (5 << 5) +#define WM8974_MCLKDIV_8 (6 << 5) +#define WM8974_MCLKDIV_12 (7 << 5) + + +struct wm8974_setup_data { + unsigned short i2c_address; +}; + +extern struct snd_soc_dai wm8974_dai; +extern struct snd_soc_codec_device soc_codec_dev_wm8974; + +#endif |