| /* |
| * wm8960.c -- WM8960 ALSA SoC Audio driver |
| * |
| * Author: Liam Girdwood |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/i2c.h> |
| #include <linux/platform_device.h> |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/initval.h> |
| #include <sound/tlv.h> |
| |
| #include "wm8960.h" |
| |
| #define AUDIO_NAME "wm8960" |
| |
| struct snd_soc_codec_device soc_codec_dev_wm8960; |
| |
| /* R25 - Power 1 */ |
| #define WM8960_VREF 0x40 |
| |
| /* R28 - Anti-pop 1 */ |
| #define WM8960_POBCTRL 0x80 |
| #define WM8960_BUFDCOPEN 0x10 |
| #define WM8960_BUFIOEN 0x08 |
| #define WM8960_SOFT_ST 0x04 |
| #define WM8960_HPSTBY 0x01 |
| |
| /* R29 - Anti-pop 2 */ |
| #define WM8960_DISOP 0x40 |
| |
| /* |
| * wm8960 register cache |
| * We can't read the WM8960 register space when we are |
| * using 2 wire for device control, so we cache them instead. |
| */ |
| static const u16 wm8960_reg[WM8960_CACHEREGNUM] = { |
| 0x0097, 0x0097, 0x0000, 0x0000, |
| 0x0000, 0x0008, 0x0000, 0x000a, |
| 0x01c0, 0x0000, 0x00ff, 0x00ff, |
| 0x0000, 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x007b, 0x0100, 0x0032, |
| 0x0000, 0x00c3, 0x00c3, 0x01c0, |
| 0x0000, 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, 0x0000, |
| 0x0100, 0x0100, 0x0050, 0x0050, |
| 0x0050, 0x0050, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0040, 0x0000, |
| 0x0000, 0x0050, 0x0050, 0x0000, |
| 0x0002, 0x0037, 0x004d, 0x0080, |
| 0x0008, 0x0031, 0x0026, 0x00e9, |
| }; |
| |
| struct wm8960_priv { |
| u16 reg_cache[WM8960_CACHEREGNUM]; |
| struct snd_soc_codec codec; |
| }; |
| |
| #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0) |
| |
| /* enumerated controls */ |
| static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", |
| "Right Inverted", "Stereo Inversion"}; |
| static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; |
| static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; |
| static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; |
| static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; |
| |
| static const struct soc_enum wm8960_enum[] = { |
| SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph), |
| SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), |
| SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), |
| SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), |
| SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), |
| SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), |
| SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), |
| }; |
| |
| static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0); |
| static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1); |
| static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); |
| static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); |
| |
| static const struct snd_kcontrol_new wm8960_snd_controls[] = { |
| SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, |
| 0, 63, 0, adc_tlv), |
| SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, |
| 6, 1, 0), |
| SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, |
| 7, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, |
| 0, 255, 0, dac_tlv), |
| |
| SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, |
| 0, 127, 0, out_tlv), |
| SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, |
| 7, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, |
| 0, 127, 0, out_tlv), |
| SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, |
| 7, 1, 0), |
| SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), |
| SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), |
| |
| SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), |
| SOC_ENUM("ADC Polarity", wm8960_enum[1]), |
| SOC_ENUM("Playback De-emphasis", wm8960_enum[0]), |
| SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), |
| |
| SOC_ENUM("DAC Polarity", wm8960_enum[2]), |
| |
| SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]), |
| SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]), |
| SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), |
| SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), |
| |
| SOC_ENUM("ALC Function", wm8960_enum[5]), |
| SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), |
| SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), |
| SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), |
| SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), |
| SOC_ENUM("ALC Mode", wm8960_enum[6]), |
| SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), |
| SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), |
| |
| SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), |
| SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), |
| |
| SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH, |
| 0, 127, 0), |
| |
| SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", |
| WM8960_BYPASS1, 4, 7, 1, bypass_tlv), |
| SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", |
| WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), |
| SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", |
| WM8960_BYPASS2, 4, 7, 1, bypass_tlv), |
| SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", |
| WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_lin_boost[] = { |
| SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), |
| SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), |
| SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_lin[] = { |
| SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_rin_boost[] = { |
| SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), |
| SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), |
| SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_rin[] = { |
| SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { |
| SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), |
| SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), |
| SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_routput_mixer[] = { |
| SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), |
| SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), |
| SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), |
| }; |
| |
| static const struct snd_kcontrol_new wm8960_mono_out[] = { |
| SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), |
| SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), |
| }; |
| |
| static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { |
| SND_SOC_DAPM_INPUT("LINPUT1"), |
| SND_SOC_DAPM_INPUT("RINPUT1"), |
| SND_SOC_DAPM_INPUT("LINPUT2"), |
| SND_SOC_DAPM_INPUT("RINPUT2"), |
| SND_SOC_DAPM_INPUT("LINPUT3"), |
| SND_SOC_DAPM_INPUT("RINPUT3"), |
| |
| SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0), |
| |
| SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, |
| wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), |
| SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, |
| wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), |
| |
| SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, |
| wm8960_lin, ARRAY_SIZE(wm8960_lin)), |
| SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, |
| wm8960_rin, ARRAY_SIZE(wm8960_rin)), |
| |
| SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0), |
| SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0), |
| |
| SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), |
| SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), |
| |
| SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, |
| &wm8960_loutput_mixer[0], |
| ARRAY_SIZE(wm8960_loutput_mixer)), |
| SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, |
| &wm8960_routput_mixer[0], |
| ARRAY_SIZE(wm8960_routput_mixer)), |
| |
| SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, |
| &wm8960_mono_out[0], |
| ARRAY_SIZE(wm8960_mono_out)), |
| |
| SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), |
| |
| SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), |
| |
| SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), |
| |
| SND_SOC_DAPM_OUTPUT("SPK_LP"), |
| SND_SOC_DAPM_OUTPUT("SPK_LN"), |
| SND_SOC_DAPM_OUTPUT("HP_L"), |
| SND_SOC_DAPM_OUTPUT("HP_R"), |
| SND_SOC_DAPM_OUTPUT("SPK_RP"), |
| SND_SOC_DAPM_OUTPUT("SPK_RN"), |
| SND_SOC_DAPM_OUTPUT("OUT3"), |
| }; |
| |
| static const struct snd_soc_dapm_route audio_paths[] = { |
| { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, |
| { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, |
| { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, |
| |
| { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", }, |
| { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */ |
| { "Left Input Mixer", NULL, "LINPUT2" }, |
| { "Left Input Mixer", NULL, "LINPUT3" }, |
| |
| { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, |
| { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, |
| { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, |
| |
| { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", }, |
| { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */ |
| { "Right Input Mixer", NULL, "RINPUT2" }, |
| { "Right Input Mixer", NULL, "LINPUT3" }, |
| |
| { "Left ADC", NULL, "Left Input Mixer" }, |
| { "Right ADC", NULL, "Right Input Mixer" }, |
| |
| { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, |
| { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} , |
| { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, |
| |
| { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, |
| { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } , |
| { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, |
| |
| { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, |
| { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, |
| |
| { "LOUT1 PGA", NULL, "Left Output Mixer" }, |
| { "ROUT1 PGA", NULL, "Right Output Mixer" }, |
| |
| { "HP_L", NULL, "LOUT1 PGA" }, |
| { "HP_R", NULL, "ROUT1 PGA" }, |
| |
| { "Left Speaker PGA", NULL, "Left Output Mixer" }, |
| { "Right Speaker PGA", NULL, "Right Output Mixer" }, |
| |
| { "Left Speaker Output", NULL, "Left Speaker PGA" }, |
| { "Right Speaker Output", NULL, "Right Speaker PGA" }, |
| |
| { "SPK_LN", NULL, "Left Speaker Output" }, |
| { "SPK_LP", NULL, "Left Speaker Output" }, |
| { "SPK_RN", NULL, "Right Speaker Output" }, |
| { "SPK_RP", NULL, "Right Speaker Output" }, |
| |
| { "OUT3", NULL, "Mono Output Mixer", } |
| }; |
| |
| static int wm8960_add_widgets(struct snd_soc_codec *codec) |
| { |
| snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets, |
| ARRAY_SIZE(wm8960_dapm_widgets)); |
| |
| snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); |
| |
| return 0; |
| } |
| |
| static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| unsigned int fmt) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| u16 iface = 0; |
| |
| /* set master/slave audio interface */ |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| iface |= 0x0040; |
| 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 |= 0x0002; |
| break; |
| case SND_SOC_DAIFMT_RIGHT_J: |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| iface |= 0x0001; |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| iface |= 0x0003; |
| break; |
| case SND_SOC_DAIFMT_DSP_B: |
| iface |= 0x0013; |
| 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 |= 0x0090; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| iface |= 0x0080; |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| iface |= 0x0010; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* set iface */ |
| snd_soc_write(codec, WM8960_IFACE1, iface); |
| return 0; |
| } |
| |
| static int wm8960_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 = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3; |
| |
| /* bit size */ |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| iface |= 0x0004; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| iface |= 0x0008; |
| break; |
| } |
| |
| /* set iface */ |
| snd_soc_write(codec, WM8960_IFACE1, iface); |
| return 0; |
| } |
| |
| static int wm8960_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7; |
| |
| if (mute) |
| snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8); |
| else |
| snd_soc_write(codec, WM8960_DACCTL1, mute_reg); |
| return 0; |
| } |
| |
| static int wm8960_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| struct wm8960_data *pdata = codec->dev->platform_data; |
| u16 reg; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| break; |
| |
| case SND_SOC_BIAS_PREPARE: |
| /* Set VMID to 2x50k */ |
| reg = snd_soc_read(codec, WM8960_POWER1); |
| reg &= ~0x180; |
| reg |= 0x80; |
| snd_soc_write(codec, WM8960_POWER1, reg); |
| break; |
| |
| case SND_SOC_BIAS_STANDBY: |
| if (codec->bias_level == SND_SOC_BIAS_OFF) { |
| /* Enable anti-pop features */ |
| snd_soc_write(codec, WM8960_APOP1, |
| WM8960_POBCTRL | WM8960_SOFT_ST | |
| WM8960_BUFDCOPEN | WM8960_BUFIOEN); |
| |
| /* Discharge HP output */ |
| reg = WM8960_DISOP; |
| if (pdata) |
| reg |= pdata->dres << 4; |
| snd_soc_write(codec, WM8960_APOP2, reg); |
| |
| msleep(400); |
| |
| snd_soc_write(codec, WM8960_APOP2, 0); |
| |
| /* Enable & ramp VMID at 2x50k */ |
| reg = snd_soc_read(codec, WM8960_POWER1); |
| reg |= 0x80; |
| snd_soc_write(codec, WM8960_POWER1, reg); |
| msleep(100); |
| |
| /* Enable VREF */ |
| snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF); |
| |
| /* Disable anti-pop features */ |
| snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN); |
| } |
| |
| /* Set VMID to 2x250k */ |
| reg = snd_soc_read(codec, WM8960_POWER1); |
| reg &= ~0x180; |
| reg |= 0x100; |
| snd_soc_write(codec, WM8960_POWER1, reg); |
| break; |
| |
| case SND_SOC_BIAS_OFF: |
| /* Enable anti-pop features */ |
| snd_soc_write(codec, WM8960_APOP1, |
| WM8960_POBCTRL | WM8960_SOFT_ST | |
| WM8960_BUFDCOPEN | WM8960_BUFIOEN); |
| |
| /* Disable VMID and VREF, let them discharge */ |
| snd_soc_write(codec, WM8960_POWER1, 0); |
| msleep(600); |
| |
| snd_soc_write(codec, WM8960_APOP1, 0); |
| break; |
| } |
| |
| codec->bias_level = level; |
| |
| return 0; |
| } |
| |
| /* PLL divisors */ |
| struct _pll_div { |
| u32 pre_div:1; |
| u32 n:4; |
| u32 k:24; |
| }; |
| |
| /* The size in bits of the pll divide multiplied by 10 |
| * to allow rounding later */ |
| #define FIXED_PLL_SIZE ((1 << 24) * 10) |
| |
| static int pll_factors(unsigned int source, unsigned int target, |
| struct _pll_div *pll_div) |
| { |
| unsigned long long Kpart; |
| unsigned int K, Ndiv, Nmod; |
| |
| pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); |
| |
| /* Scale up target to PLL operating frequency */ |
| target *= 4; |
| |
| 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)) { |
| pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); |
| return -EINVAL; |
| } |
| |
| 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; |
| |
| pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", |
| pll_div->n, pll_div->k, pll_div->pre_div); |
| |
| return 0; |
| } |
| |
| static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
| int source, unsigned int freq_in, unsigned int freq_out) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| u16 reg; |
| static struct _pll_div pll_div; |
| int ret; |
| |
| if (freq_in && freq_out) { |
| ret = pll_factors(freq_in, freq_out, &pll_div); |
| if (ret != 0) |
| return ret; |
| } |
| |
| /* Disable the PLL: even if we are changing the frequency the |
| * PLL needs to be disabled while we do so. */ |
| snd_soc_write(codec, WM8960_CLOCK1, |
| snd_soc_read(codec, WM8960_CLOCK1) & ~1); |
| snd_soc_write(codec, WM8960_POWER2, |
| snd_soc_read(codec, WM8960_POWER2) & ~1); |
| |
| if (!freq_in || !freq_out) |
| return 0; |
| |
| reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f; |
| reg |= pll_div.pre_div << 4; |
| reg |= pll_div.n; |
| |
| if (pll_div.k) { |
| reg |= 0x20; |
| |
| snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f); |
| snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff); |
| snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff); |
| } |
| snd_soc_write(codec, WM8960_PLL1, reg); |
| |
| /* Turn it on */ |
| snd_soc_write(codec, WM8960_POWER2, |
| snd_soc_read(codec, WM8960_POWER2) | 1); |
| msleep(250); |
| snd_soc_write(codec, WM8960_CLOCK1, |
| snd_soc_read(codec, WM8960_CLOCK1) | 1); |
| |
| return 0; |
| } |
| |
| static int wm8960_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 WM8960_SYSCLKSEL: |
| reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe; |
| snd_soc_write(codec, WM8960_CLOCK1, reg | div); |
| break; |
| case WM8960_SYSCLKDIV: |
| reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9; |
| snd_soc_write(codec, WM8960_CLOCK1, reg | div); |
| break; |
| case WM8960_DACDIV: |
| reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7; |
| snd_soc_write(codec, WM8960_CLOCK1, reg | div); |
| break; |
| case WM8960_OPCLKDIV: |
| reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f; |
| snd_soc_write(codec, WM8960_PLL1, reg | div); |
| break; |
| case WM8960_DCLKDIV: |
| reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f; |
| snd_soc_write(codec, WM8960_CLOCK2, reg | div); |
| break; |
| case WM8960_TOCLKSEL: |
| reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd; |
| snd_soc_write(codec, WM8960_ADDCTL1, reg | div); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 |
| |
| #define WM8960_FORMATS \ |
| (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
| SNDRV_PCM_FMTBIT_S24_LE) |
| |
| static struct snd_soc_dai_ops wm8960_dai_ops = { |
| .hw_params = wm8960_hw_params, |
| .digital_mute = wm8960_mute, |
| .set_fmt = wm8960_set_dai_fmt, |
| .set_clkdiv = wm8960_set_dai_clkdiv, |
| .set_pll = wm8960_set_dai_pll, |
| }; |
| |
| struct snd_soc_dai wm8960_dai = { |
| .name = "WM8960", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8960_RATES, |
| .formats = WM8960_FORMATS,}, |
| .capture = { |
| .stream_name = "Capture", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8960_RATES, |
| .formats = WM8960_FORMATS,}, |
| .ops = &wm8960_dai_ops, |
| .symmetric_rates = 1, |
| }; |
| EXPORT_SYMBOL_GPL(wm8960_dai); |
| |
| static int wm8960_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; |
| |
| wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| return 0; |
| } |
| |
| static int wm8960_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(wm8960_reg); i++) { |
| data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| data[1] = cache[i] & 0x00ff; |
| codec->hw_write(codec->control_data, data, 2); |
| } |
| |
| wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| wm8960_set_bias_level(codec, codec->suspend_bias_level); |
| return 0; |
| } |
| |
| static struct snd_soc_codec *wm8960_codec; |
| |
| static int wm8960_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec; |
| int ret = 0; |
| |
| if (wm8960_codec == NULL) { |
| dev_err(&pdev->dev, "Codec device not registered\n"); |
| return -ENODEV; |
| } |
| |
| socdev->card->codec = wm8960_codec; |
| codec = wm8960_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; |
| } |
| |
| snd_soc_add_controls(codec, wm8960_snd_controls, |
| ARRAY_SIZE(wm8960_snd_controls)); |
| wm8960_add_widgets(codec); |
| |
| return ret; |
| |
| pcm_err: |
| return ret; |
| } |
| |
| /* power down chip */ |
| static int wm8960_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| |
| snd_soc_free_pcms(socdev); |
| snd_soc_dapm_free(socdev); |
| |
| return 0; |
| } |
| |
| struct snd_soc_codec_device soc_codec_dev_wm8960 = { |
| .probe = wm8960_probe, |
| .remove = wm8960_remove, |
| .suspend = wm8960_suspend, |
| .resume = wm8960_resume, |
| }; |
| EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960); |
| |
| static int wm8960_register(struct wm8960_priv *wm8960, |
| enum snd_soc_control_type control) |
| { |
| struct wm8960_data *pdata = wm8960->codec.dev->platform_data; |
| struct snd_soc_codec *codec = &wm8960->codec; |
| int ret; |
| u16 reg; |
| |
| if (wm8960_codec) { |
| dev_err(codec->dev, "Another WM8960 is registered\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| if (!pdata) { |
| dev_warn(codec->dev, "No platform data supplied\n"); |
| } else { |
| if (pdata->dres > WM8960_DRES_MAX) { |
| dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres); |
| pdata->dres = 0; |
| } |
| } |
| |
| mutex_init(&codec->mutex); |
| INIT_LIST_HEAD(&codec->dapm_widgets); |
| INIT_LIST_HEAD(&codec->dapm_paths); |
| |
| codec->private_data = wm8960; |
| codec->name = "WM8960"; |
| codec->owner = THIS_MODULE; |
| codec->bias_level = SND_SOC_BIAS_OFF; |
| codec->set_bias_level = wm8960_set_bias_level; |
| codec->dai = &wm8960_dai; |
| codec->num_dai = 1; |
| codec->reg_cache_size = WM8960_CACHEREGNUM; |
| codec->reg_cache = &wm8960->reg_cache; |
| |
| memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg)); |
| |
| ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); |
| goto err; |
| } |
| |
| ret = wm8960_reset(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to issue reset\n"); |
| goto err; |
| } |
| |
| wm8960_dai.dev = codec->dev; |
| |
| wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| /* Latch the update bits */ |
| reg = snd_soc_read(codec, WM8960_LINVOL); |
| snd_soc_write(codec, WM8960_LINVOL, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_RINVOL); |
| snd_soc_write(codec, WM8960_RINVOL, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_LADC); |
| snd_soc_write(codec, WM8960_LADC, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_RADC); |
| snd_soc_write(codec, WM8960_RADC, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_LDAC); |
| snd_soc_write(codec, WM8960_LDAC, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_RDAC); |
| snd_soc_write(codec, WM8960_RDAC, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_LOUT1); |
| snd_soc_write(codec, WM8960_LOUT1, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_ROUT1); |
| snd_soc_write(codec, WM8960_ROUT1, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_LOUT2); |
| snd_soc_write(codec, WM8960_LOUT2, reg | 0x100); |
| reg = snd_soc_read(codec, WM8960_ROUT2); |
| snd_soc_write(codec, WM8960_ROUT2, reg | 0x100); |
| |
| wm8960_codec = codec; |
| |
| ret = snd_soc_register_codec(codec); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to register codec: %d\n", ret); |
| goto err; |
| } |
| |
| ret = snd_soc_register_dai(&wm8960_dai); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to register DAI: %d\n", ret); |
| goto err_codec; |
| } |
| |
| return 0; |
| |
| err_codec: |
| snd_soc_unregister_codec(codec); |
| err: |
| kfree(wm8960); |
| return ret; |
| } |
| |
| static void wm8960_unregister(struct wm8960_priv *wm8960) |
| { |
| wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF); |
| snd_soc_unregister_dai(&wm8960_dai); |
| snd_soc_unregister_codec(&wm8960->codec); |
| kfree(wm8960); |
| wm8960_codec = NULL; |
| } |
| |
| static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct wm8960_priv *wm8960; |
| struct snd_soc_codec *codec; |
| |
| wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL); |
| if (wm8960 == NULL) |
| return -ENOMEM; |
| |
| codec = &wm8960->codec; |
| |
| i2c_set_clientdata(i2c, wm8960); |
| codec->control_data = i2c; |
| |
| codec->dev = &i2c->dev; |
| |
| return wm8960_register(wm8960, SND_SOC_I2C); |
| } |
| |
| static __devexit int wm8960_i2c_remove(struct i2c_client *client) |
| { |
| struct wm8960_priv *wm8960 = i2c_get_clientdata(client); |
| wm8960_unregister(wm8960); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8960_i2c_id[] = { |
| { "wm8960", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); |
| |
| static struct i2c_driver wm8960_i2c_driver = { |
| .driver = { |
| .name = "WM8960 I2C Codec", |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8960_i2c_probe, |
| .remove = __devexit_p(wm8960_i2c_remove), |
| .id_table = wm8960_i2c_id, |
| }; |
| |
| static int __init wm8960_modinit(void) |
| { |
| int ret; |
| |
| ret = i2c_add_driver(&wm8960_i2c_driver); |
| if (ret != 0) { |
| printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n", |
| ret); |
| } |
| |
| return ret; |
| } |
| module_init(wm8960_modinit); |
| |
| static void __exit wm8960_exit(void) |
| { |
| i2c_del_driver(&wm8960_i2c_driver); |
| } |
| module_exit(wm8960_exit); |
| |
| |
| MODULE_DESCRIPTION("ASoC WM8960 driver"); |
| MODULE_AUTHOR("Liam Girdwood"); |
| MODULE_LICENSE("GPL"); |
