| /* |
| * wm8510.c -- WM8510 ALSA Soc Audio driver |
| * |
| * Copyright 2006 Wolfson Microelectronics PLC. |
| * |
| * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/i2c.h> |
| #include <linux/platform_device.h> |
| #include <linux/spi/spi.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/initval.h> |
| |
| #include "wm8510.h" |
| |
| #define WM8510_VERSION "0.6" |
| |
| struct snd_soc_codec_device soc_codec_dev_wm8510; |
| |
| /* |
| * wm8510 register cache |
| * We can't read the WM8510 register space when we are |
| * using 2 wire for device control, so we cache them instead. |
| */ |
| static const u16 wm8510_reg[WM8510_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, 0x0001, 0x0000, |
| 0x0000, 0x0000, 0x0039, 0x0000, |
| 0x0001, |
| }; |
| |
| #define WM8510_POWER1_BIASEN 0x08 |
| #define WM8510_POWER1_BUFIOEN 0x10 |
| |
| /* |
| * read wm8510 register cache |
| */ |
| static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| u16 *cache = codec->reg_cache; |
| if (reg == WM8510_RESET) |
| return 0; |
| if (reg >= WM8510_CACHEREGNUM) |
| return -1; |
| return cache[reg]; |
| } |
| |
| /* |
| * write wm8510 register cache |
| */ |
| static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec, |
| u16 reg, unsigned int value) |
| { |
| u16 *cache = codec->reg_cache; |
| if (reg >= WM8510_CACHEREGNUM) |
| return; |
| cache[reg] = value; |
| } |
| |
| /* |
| * write to the WM8510 register space |
| */ |
| static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg, |
| unsigned int value) |
| { |
| u8 data[2]; |
| |
| /* data is |
| * D15..D9 WM8510 register offset |
| * D8...D0 register data |
| */ |
| data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| data[1] = value & 0x00ff; |
| |
| wm8510_write_reg_cache(codec, reg, value); |
| if (codec->hw_write(codec->control_data, data, 2) == 2) |
| return 0; |
| else |
| return -EIO; |
| } |
| |
| #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0) |
| |
| static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" }; |
| static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; |
| static const char *wm8510_alc[] = { "ALC", "Limiter" }; |
| |
| static const struct soc_enum wm8510_enum[] = { |
| SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */ |
| SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */ |
| SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp), |
| SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc), |
| }; |
| |
| static const struct snd_kcontrol_new wm8510_snd_controls[] = { |
| |
| SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0), |
| |
| SOC_ENUM("DAC Companding", wm8510_enum[1]), |
| SOC_ENUM("ADC Companding", wm8510_enum[0]), |
| |
| SOC_ENUM("Playback De-emphasis", wm8510_enum[2]), |
| SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0), |
| |
| SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0), |
| |
| SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0), |
| SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0), |
| SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0), |
| |
| SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0), |
| |
| SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0), |
| SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0), |
| SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0), |
| |
| SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0), |
| SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0), |
| |
| SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0), |
| SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0), |
| SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0), |
| |
| SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0), |
| SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0), |
| SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0), |
| |
| SOC_ENUM("ALC Capture Mode", wm8510_enum[3]), |
| SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0), |
| SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0), |
| |
| SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0), |
| SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0), |
| |
| SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0), |
| SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0), |
| |
| SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0), |
| SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1), |
| SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0), |
| SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0), |
| |
| SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0), |
| SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1), |
| }; |
| |
| /* Speaker Output Mixer */ |
| static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0), |
| SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0), |
| SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0), |
| }; |
| |
| /* Mono Output Mixer */ |
| static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0), |
| SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0), |
| SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8510_boost_controls[] = { |
| SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1), |
| SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0), |
| SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8510_micpga_controls[] = { |
| SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0), |
| SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0), |
| SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0), |
| }; |
| |
| static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = { |
| SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0, |
| &wm8510_speaker_mixer_controls[0], |
| ARRAY_SIZE(wm8510_speaker_mixer_controls)), |
| SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0, |
| &wm8510_mono_mixer_controls[0], |
| ARRAY_SIZE(wm8510_mono_mixer_controls)), |
| SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0), |
| SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0), |
| SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0), |
| |
| SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0, |
| &wm8510_micpga_controls[0], |
| ARRAY_SIZE(wm8510_micpga_controls)), |
| SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0, |
| &wm8510_boost_controls[0], |
| ARRAY_SIZE(wm8510_boost_controls)), |
| |
| SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_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"}, |
| |
| /* Microphone PGA */ |
| {"Mic PGA", "MICN Switch", "MICN"}, |
| {"Mic PGA", "MICP Switch", "MICP"}, |
| { "Mic PGA", "AUX Switch", "Aux Input" }, |
| |
| /* Boost Mixer */ |
| {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, |
| {"Boost Mixer", "Mic Volume", "MICP"}, |
| {"Boost Mixer", "Aux Volume", "Aux Input"}, |
| |
| {"ADC", NULL, "Boost Mixer"}, |
| }; |
| |
| static int wm8510_add_widgets(struct snd_soc_codec *codec) |
| { |
| snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets, |
| ARRAY_SIZE(wm8510_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 pre_div:4; /* prescale - 1 */ |
| unsigned int n:4; |
| unsigned int k; |
| }; |
| |
| static struct pll_ pll_div; |
| |
| /* The size in bits of the pll divide multiplied by 10 |
| * to allow rounding later */ |
| #define FIXED_PLL_SIZE ((1 << 24) * 10) |
| |
| static void pll_factors(unsigned int target, unsigned int source) |
| { |
| unsigned long long Kpart; |
| unsigned int K, Ndiv, Nmod; |
| |
| Ndiv = target / source; |
| if (Ndiv < 6) { |
| source >>= 1; |
| pll_div.pre_div = 1; |
| Ndiv = target / source; |
| } else |
| pll_div.pre_div = 0; |
| |
| if ((Ndiv < 6) || (Ndiv > 12)) |
| printk(KERN_WARNING |
| "WM8510 N value %d outwith recommended range!d\n", |
| Ndiv); |
| |
| pll_div.n = Ndiv; |
| Nmod = target % source; |
| Kpart = FIXED_PLL_SIZE * (long long)Nmod; |
| |
| do_div(Kpart, source); |
| |
| K = Kpart & 0xFFFFFFFF; |
| |
| /* Check if we need to round */ |
| if ((K % 10) >= 5) |
| K += 5; |
| |
| /* Move down to proper range now rounding is done */ |
| K /= 10; |
| |
| pll_div.k = K; |
| } |
| |
| static int wm8510_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; |
| u16 reg; |
| |
| if (freq_in == 0 || freq_out == 0) { |
| /* Clock CODEC directly from MCLK */ |
| reg = wm8510_read_reg_cache(codec, WM8510_CLOCK); |
| wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff); |
| |
| /* Turn off PLL */ |
| reg = wm8510_read_reg_cache(codec, WM8510_POWER1); |
| wm8510_write(codec, WM8510_POWER1, reg & 0x1df); |
| return 0; |
| } |
| |
| pll_factors(freq_out*4, freq_in); |
| |
| wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n); |
| wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18); |
| wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff); |
| wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff); |
| reg = wm8510_read_reg_cache(codec, WM8510_POWER1); |
| wm8510_write(codec, WM8510_POWER1, reg | 0x020); |
| |
| /* Run CODEC from PLL instead of MCLK */ |
| reg = wm8510_read_reg_cache(codec, WM8510_CLOCK); |
| wm8510_write(codec, WM8510_CLOCK, reg | 0x100); |
| |
| return 0; |
| } |
| |
| /* |
| * Configure WM8510 clock dividers. |
| */ |
| static int wm8510_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 WM8510_OPCLKDIV: |
| reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf; |
| wm8510_write(codec, WM8510_GPIO, reg | div); |
| break; |
| case WM8510_MCLKDIV: |
| reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x11f; |
| wm8510_write(codec, WM8510_CLOCK, reg | div); |
| break; |
| case WM8510_ADCCLK: |
| reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7; |
| wm8510_write(codec, WM8510_ADC, reg | div); |
| break; |
| case WM8510_DACCLK: |
| reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7; |
| wm8510_write(codec, WM8510_DAC, reg | div); |
| break; |
| case WM8510_BCLKDIV: |
| reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3; |
| wm8510_write(codec, WM8510_CLOCK, reg | div); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int wm8510_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 = wm8510_read_reg_cache(codec, WM8510_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; |
| } |
| |
| wm8510_write(codec, WM8510_IFACE, iface); |
| wm8510_write(codec, WM8510_CLOCK, clk); |
| return 0; |
| } |
| |
| static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_device *socdev = rtd->socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f; |
| u16 adn = wm8510_read_reg_cache(codec, WM8510_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: |
| case SNDRV_PCM_RATE_48000: |
| break; |
| } |
| |
| wm8510_write(codec, WM8510_IFACE, iface); |
| wm8510_write(codec, WM8510_ADD, adn); |
| return 0; |
| } |
| |
| static int wm8510_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf; |
| |
| if (mute) |
| wm8510_write(codec, WM8510_DAC, mute_reg | 0x40); |
| else |
| wm8510_write(codec, WM8510_DAC, mute_reg); |
| return 0; |
| } |
| |
| /* liam need to make this lower power with dapm */ |
| static int wm8510_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| u16 power1 = wm8510_read_reg_cache(codec, WM8510_POWER1) & ~0x3; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| case SND_SOC_BIAS_PREPARE: |
| power1 |= 0x1; /* VMID 50k */ |
| wm8510_write(codec, WM8510_POWER1, power1); |
| break; |
| |
| case SND_SOC_BIAS_STANDBY: |
| power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN; |
| |
| if (codec->bias_level == SND_SOC_BIAS_OFF) { |
| /* Initial cap charge at VMID 5k */ |
| wm8510_write(codec, WM8510_POWER1, power1 | 0x3); |
| mdelay(100); |
| } |
| |
| power1 |= 0x2; /* VMID 500k */ |
| wm8510_write(codec, WM8510_POWER1, power1); |
| break; |
| |
| case SND_SOC_BIAS_OFF: |
| wm8510_write(codec, WM8510_POWER1, 0); |
| wm8510_write(codec, WM8510_POWER2, 0); |
| wm8510_write(codec, WM8510_POWER3, 0); |
| break; |
| } |
| |
| codec->bias_level = level; |
| return 0; |
| } |
| |
| #define WM8510_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 WM8510_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 wm8510_dai_ops = { |
| .hw_params = wm8510_pcm_hw_params, |
| .digital_mute = wm8510_mute, |
| .set_fmt = wm8510_set_dai_fmt, |
| .set_clkdiv = wm8510_set_dai_clkdiv, |
| .set_pll = wm8510_set_dai_pll, |
| }; |
| |
| struct snd_soc_dai wm8510_dai = { |
| .name = "WM8510 HiFi", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = WM8510_RATES, |
| .formats = WM8510_FORMATS,}, |
| .capture = { |
| .stream_name = "Capture", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = WM8510_RATES, |
| .formats = WM8510_FORMATS,}, |
| .ops = &wm8510_dai_ops, |
| }; |
| EXPORT_SYMBOL_GPL(wm8510_dai); |
| |
| static int wm8510_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; |
| |
| wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| return 0; |
| } |
| |
| static int wm8510_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(wm8510_reg); i++) { |
| data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| data[1] = cache[i] & 0x00ff; |
| codec->hw_write(codec->control_data, data, 2); |
| } |
| wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| wm8510_set_bias_level(codec, codec->suspend_bias_level); |
| return 0; |
| } |
| |
| /* |
| * initialise the WM8510 driver |
| * register the mixer and dsp interfaces with the kernel |
| */ |
| static int wm8510_init(struct snd_soc_device *socdev) |
| { |
| struct snd_soc_codec *codec = socdev->card->codec; |
| int ret = 0; |
| |
| codec->name = "WM8510"; |
| codec->owner = THIS_MODULE; |
| codec->read = wm8510_read_reg_cache; |
| codec->write = wm8510_write; |
| codec->set_bias_level = wm8510_set_bias_level; |
| codec->dai = &wm8510_dai; |
| codec->num_dai = 1; |
| codec->reg_cache_size = ARRAY_SIZE(wm8510_reg); |
| codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL); |
| |
| if (codec->reg_cache == NULL) |
| return -ENOMEM; |
| |
| wm8510_reset(codec); |
| |
| /* register pcms */ |
| ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| if (ret < 0) { |
| printk(KERN_ERR "wm8510: failed to create pcms\n"); |
| goto pcm_err; |
| } |
| |
| /* power on device */ |
| codec->bias_level = SND_SOC_BIAS_OFF; |
| wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| snd_soc_add_controls(codec, wm8510_snd_controls, |
| ARRAY_SIZE(wm8510_snd_controls)); |
| wm8510_add_widgets(codec); |
| ret = snd_soc_init_card(socdev); |
| if (ret < 0) { |
| printk(KERN_ERR "wm8510: 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 *wm8510_socdev; |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| |
| /* |
| * WM8510 2 wire address is 0x1a |
| */ |
| |
| static int wm8510_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct snd_soc_device *socdev = wm8510_socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| int ret; |
| |
| i2c_set_clientdata(i2c, codec); |
| codec->control_data = i2c; |
| |
| ret = wm8510_init(socdev); |
| if (ret < 0) |
| pr_err("failed to initialise WM8510\n"); |
| |
| return ret; |
| } |
| |
| static int wm8510_i2c_remove(struct i2c_client *client) |
| { |
| struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| kfree(codec->reg_cache); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8510_i2c_id[] = { |
| { "wm8510", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id); |
| |
| static struct i2c_driver wm8510_i2c_driver = { |
| .driver = { |
| .name = "WM8510 I2C Codec", |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8510_i2c_probe, |
| .remove = wm8510_i2c_remove, |
| .id_table = wm8510_i2c_id, |
| }; |
| |
| static int wm8510_add_i2c_device(struct platform_device *pdev, |
| const struct wm8510_setup_data *setup) |
| { |
| struct i2c_board_info info; |
| struct i2c_adapter *adapter; |
| struct i2c_client *client; |
| int ret; |
| |
| ret = i2c_add_driver(&wm8510_i2c_driver); |
| if (ret != 0) { |
| dev_err(&pdev->dev, "can't add i2c driver\n"); |
| return ret; |
| } |
| |
| memset(&info, 0, sizeof(struct i2c_board_info)); |
| info.addr = setup->i2c_address; |
| strlcpy(info.type, "wm8510", I2C_NAME_SIZE); |
| |
| adapter = i2c_get_adapter(setup->i2c_bus); |
| if (!adapter) { |
| dev_err(&pdev->dev, "can't get i2c adapter %d\n", |
| setup->i2c_bus); |
| goto err_driver; |
| } |
| |
| client = i2c_new_device(adapter, &info); |
| i2c_put_adapter(adapter); |
| if (!client) { |
| dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", |
| (unsigned int)info.addr); |
| goto err_driver; |
| } |
| |
| return 0; |
| |
| err_driver: |
| i2c_del_driver(&wm8510_i2c_driver); |
| return -ENODEV; |
| } |
| #endif |
| |
| #if defined(CONFIG_SPI_MASTER) |
| static int __devinit wm8510_spi_probe(struct spi_device *spi) |
| { |
| struct snd_soc_device *socdev = wm8510_socdev; |
| struct snd_soc_codec *codec = socdev->card->codec; |
| int ret; |
| |
| codec->control_data = spi; |
| |
| ret = wm8510_init(socdev); |
| if (ret < 0) |
| dev_err(&spi->dev, "failed to initialise WM8510\n"); |
| |
| return ret; |
| } |
| |
| static int __devexit wm8510_spi_remove(struct spi_device *spi) |
| { |
| return 0; |
| } |
| |
| static struct spi_driver wm8510_spi_driver = { |
| .driver = { |
| .name = "wm8510", |
| .bus = &spi_bus_type, |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8510_spi_probe, |
| .remove = __devexit_p(wm8510_spi_remove), |
| }; |
| |
| static int wm8510_spi_write(struct spi_device *spi, const char *data, int len) |
| { |
| struct spi_transfer t; |
| struct spi_message m; |
| u8 msg[2]; |
| |
| if (len <= 0) |
| return 0; |
| |
| msg[0] = data[0]; |
| msg[1] = data[1]; |
| |
| spi_message_init(&m); |
| memset(&t, 0, (sizeof t)); |
| |
| t.tx_buf = &msg[0]; |
| t.len = len; |
| |
| spi_message_add_tail(&t, &m); |
| spi_sync(spi, &m); |
| |
| return len; |
| } |
| #endif /* CONFIG_SPI_MASTER */ |
| |
| static int wm8510_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct wm8510_setup_data *setup; |
| struct snd_soc_codec *codec; |
| int ret = 0; |
| |
| pr_info("WM8510 Audio Codec %s", WM8510_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); |
| |
| wm8510_socdev = socdev; |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| if (setup->i2c_address) { |
| codec->hw_write = (hw_write_t)i2c_master_send; |
| ret = wm8510_add_i2c_device(pdev, setup); |
| } |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| if (setup->spi) { |
| codec->hw_write = (hw_write_t)wm8510_spi_write; |
| ret = spi_register_driver(&wm8510_spi_driver); |
| if (ret != 0) |
| printk(KERN_ERR "can't add spi driver"); |
| } |
| #endif |
| |
| if (ret != 0) |
| kfree(codec); |
| return ret; |
| } |
| |
| /* power down chip */ |
| static int wm8510_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) |
| wm8510_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_unregister_device(codec->control_data); |
| i2c_del_driver(&wm8510_i2c_driver); |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| spi_unregister_driver(&wm8510_spi_driver); |
| #endif |
| kfree(codec); |
| |
| return 0; |
| } |
| |
| struct snd_soc_codec_device soc_codec_dev_wm8510 = { |
| .probe = wm8510_probe, |
| .remove = wm8510_remove, |
| .suspend = wm8510_suspend, |
| .resume = wm8510_resume, |
| }; |
| EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510); |
| |
| static int __init wm8510_modinit(void) |
| { |
| return snd_soc_register_dai(&wm8510_dai); |
| } |
| module_init(wm8510_modinit); |
| |
| static void __exit wm8510_exit(void) |
| { |
| snd_soc_unregister_dai(&wm8510_dai); |
| } |
| module_exit(wm8510_exit); |
| |
| MODULE_DESCRIPTION("ASoC WM8510 driver"); |
| MODULE_AUTHOR("Liam Girdwood"); |
| MODULE_LICENSE("GPL"); |