| /* |
| * wm8988.c -- WM8988 ALSA SoC audio driver |
| * |
| * Copyright 2009 Wolfson Microelectronics plc |
| * Copyright 2005 Openedhand Ltd. |
| * |
| * Author: Mark Brown <broonie@opensource.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/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/i2c.h> |
| #include <linux/spi/spi.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/tlv.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/initval.h> |
| |
| #include "wm8988.h" |
| |
| /* |
| * wm8988 register cache |
| * We can't read the WM8988 register space when we |
| * are using 2 wire for device control, so we cache them instead. |
| */ |
| static const u16 wm8988_reg[] = { |
| 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ |
| 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ |
| 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ |
| 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ |
| 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ |
| 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ |
| 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ |
| 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ |
| 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ |
| 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ |
| 0x0079, 0x0079, 0x0079, /* 40 */ |
| }; |
| |
| /* codec private data */ |
| struct wm8988_priv { |
| unsigned int sysclk; |
| struct snd_soc_codec codec; |
| struct snd_pcm_hw_constraint_list *sysclk_constraints; |
| u16 reg_cache[WM8988_NUM_REG]; |
| }; |
| |
| |
| #define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0) |
| |
| /* |
| * WM8988 Controls |
| */ |
| |
| static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"}; |
| static const struct soc_enum bass_boost = |
| SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt); |
| |
| static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" }; |
| static const struct soc_enum bass_filter = |
| SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt); |
| |
| static const char *treble_txt[] = {"8kHz", "4kHz"}; |
| static const struct soc_enum treble = |
| SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt); |
| |
| static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"}; |
| static const struct soc_enum stereo_3d_lc = |
| SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt); |
| |
| static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"}; |
| static const struct soc_enum stereo_3d_uc = |
| SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt); |
| |
| static const char *stereo_3d_func_txt[] = {"Capture", "Playback"}; |
| static const struct soc_enum stereo_3d_func = |
| SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt); |
| |
| static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"}; |
| static const struct soc_enum alc_func = |
| SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt); |
| |
| static const char *ng_type_txt[] = {"Constant PGA Gain", |
| "Mute ADC Output"}; |
| static const struct soc_enum ng_type = |
| SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt); |
| |
| static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| static const struct soc_enum deemph = |
| SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt); |
| |
| static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert", |
| "L + R Invert"}; |
| static const struct soc_enum adcpol = |
| SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt); |
| |
| static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0); |
| static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); |
| static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); |
| static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); |
| static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0); |
| |
| static const struct snd_kcontrol_new wm8988_snd_controls[] = { |
| |
| SOC_ENUM("Bass Boost", bass_boost), |
| SOC_ENUM("Bass Filter", bass_filter), |
| SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1), |
| |
| SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0), |
| SOC_ENUM("Treble Cut-off", treble), |
| |
| SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0), |
| SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0), |
| SOC_ENUM("3D Lower Cut-off", stereo_3d_lc), |
| SOC_ENUM("3D Upper Cut-off", stereo_3d_uc), |
| SOC_ENUM("3D Mode", stereo_3d_func), |
| |
| SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0), |
| SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0), |
| SOC_ENUM("ALC Capture Function", alc_func), |
| SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0), |
| SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0), |
| SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0), |
| SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0), |
| SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0), |
| SOC_ENUM("ALC Capture NG Type", ng_type), |
| SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0), |
| |
| SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC, |
| 0, 255, 0, adc_tlv), |
| SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL, |
| 0, 63, 0, pga_tlv), |
| SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0), |
| SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1), |
| |
| SOC_ENUM("Playback De-emphasis", deemph), |
| |
| SOC_ENUM("Capture Polarity", adcpol), |
| SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0), |
| SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv), |
| |
| SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1, |
| bypass_tlv), |
| SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1, |
| bypass_tlv), |
| SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1, |
| bypass_tlv), |
| SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1, |
| bypass_tlv), |
| |
| SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V, |
| WM8988_ROUT1V, 7, 1, 0), |
| SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V, |
| 0, 127, 0, out_tlv), |
| |
| SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V, |
| WM8988_ROUT2V, 7, 1, 0), |
| SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V, |
| 0, 127, 0, out_tlv), |
| |
| }; |
| |
| /* |
| * DAPM Controls |
| */ |
| |
| static int wm8988_lrc_control(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *kcontrol, int event) |
| { |
| struct snd_soc_codec *codec = w->codec; |
| u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2); |
| |
| /* Use the DAC to gate LRC if active, otherwise use ADC */ |
| if (snd_soc_read(codec, WM8988_PWR2) & 0x180) |
| adctl2 &= ~0x4; |
| else |
| adctl2 |= 0x4; |
| |
| return snd_soc_write(codec, WM8988_ADCTL2, adctl2); |
| } |
| |
| static const char *wm8988_line_texts[] = { |
| "Line 1", "Line 2", "PGA", "Differential"}; |
| |
| static const unsigned int wm8988_line_values[] = { |
| 0, 1, 3, 4}; |
| |
| static const struct soc_enum wm8988_lline_enum = |
| SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7, |
| ARRAY_SIZE(wm8988_line_texts), |
| wm8988_line_texts, |
| wm8988_line_values); |
| static const struct snd_kcontrol_new wm8988_left_line_controls = |
| SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum); |
| |
| static const struct soc_enum wm8988_rline_enum = |
| SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7, |
| ARRAY_SIZE(wm8988_line_texts), |
| wm8988_line_texts, |
| wm8988_line_values); |
| static const struct snd_kcontrol_new wm8988_right_line_controls = |
| SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum); |
| |
| /* Left Mixer */ |
| static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0), |
| SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0), |
| SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0), |
| SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0), |
| }; |
| |
| /* Right Mixer */ |
| static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0), |
| SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0), |
| SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0), |
| SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0), |
| }; |
| |
| static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"}; |
| static const unsigned int wm8988_pga_val[] = { 0, 1, 3 }; |
| |
| /* Left PGA Mux */ |
| static const struct soc_enum wm8988_lpga_enum = |
| SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3, |
| ARRAY_SIZE(wm8988_pga_sel), |
| wm8988_pga_sel, |
| wm8988_pga_val); |
| static const struct snd_kcontrol_new wm8988_left_pga_controls = |
| SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum); |
| |
| /* Right PGA Mux */ |
| static const struct soc_enum wm8988_rpga_enum = |
| SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3, |
| ARRAY_SIZE(wm8988_pga_sel), |
| wm8988_pga_sel, |
| wm8988_pga_val); |
| static const struct snd_kcontrol_new wm8988_right_pga_controls = |
| SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum); |
| |
| /* Differential Mux */ |
| static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"}; |
| static const struct soc_enum diffmux = |
| SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel); |
| static const struct snd_kcontrol_new wm8988_diffmux_controls = |
| SOC_DAPM_ENUM("Route", diffmux); |
| |
| /* Mono ADC Mux */ |
| static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)", |
| "Mono (Right)", "Digital Mono"}; |
| static const struct soc_enum monomux = |
| SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux); |
| static const struct snd_kcontrol_new wm8988_monomux_controls = |
| SOC_DAPM_ENUM("Route", monomux); |
| |
| static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = { |
| SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0), |
| |
| SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, |
| &wm8988_diffmux_controls), |
| SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, |
| &wm8988_monomux_controls), |
| SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, |
| &wm8988_monomux_controls), |
| |
| SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0, |
| &wm8988_left_pga_controls), |
| SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0, |
| &wm8988_right_pga_controls), |
| |
| SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, |
| &wm8988_left_line_controls), |
| SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, |
| &wm8988_right_line_controls), |
| |
| SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0), |
| SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0), |
| |
| SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0), |
| SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0), |
| |
| SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, |
| &wm8988_left_mixer_controls[0], |
| ARRAY_SIZE(wm8988_left_mixer_controls)), |
| SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, |
| &wm8988_right_mixer_controls[0], |
| ARRAY_SIZE(wm8988_right_mixer_controls)), |
| |
| SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0), |
| SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0), |
| |
| SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control), |
| |
| SND_SOC_DAPM_OUTPUT("LOUT1"), |
| SND_SOC_DAPM_OUTPUT("ROUT1"), |
| SND_SOC_DAPM_OUTPUT("LOUT2"), |
| SND_SOC_DAPM_OUTPUT("ROUT2"), |
| SND_SOC_DAPM_OUTPUT("VREF"), |
| |
| SND_SOC_DAPM_INPUT("LINPUT1"), |
| SND_SOC_DAPM_INPUT("LINPUT2"), |
| SND_SOC_DAPM_INPUT("RINPUT1"), |
| SND_SOC_DAPM_INPUT("RINPUT2"), |
| }; |
| |
| static const struct snd_soc_dapm_route audio_map[] = { |
| |
| { "Left Line Mux", "Line 1", "LINPUT1" }, |
| { "Left Line Mux", "Line 2", "LINPUT2" }, |
| { "Left Line Mux", "PGA", "Left PGA Mux" }, |
| { "Left Line Mux", "Differential", "Differential Mux" }, |
| |
| { "Right Line Mux", "Line 1", "RINPUT1" }, |
| { "Right Line Mux", "Line 2", "RINPUT2" }, |
| { "Right Line Mux", "PGA", "Right PGA Mux" }, |
| { "Right Line Mux", "Differential", "Differential Mux" }, |
| |
| { "Left PGA Mux", "Line 1", "LINPUT1" }, |
| { "Left PGA Mux", "Line 2", "LINPUT2" }, |
| { "Left PGA Mux", "Differential", "Differential Mux" }, |
| |
| { "Right PGA Mux", "Line 1", "RINPUT1" }, |
| { "Right PGA Mux", "Line 2", "RINPUT2" }, |
| { "Right PGA Mux", "Differential", "Differential Mux" }, |
| |
| { "Differential Mux", "Line 1", "LINPUT1" }, |
| { "Differential Mux", "Line 1", "RINPUT1" }, |
| { "Differential Mux", "Line 2", "LINPUT2" }, |
| { "Differential Mux", "Line 2", "RINPUT2" }, |
| |
| { "Left ADC Mux", "Stereo", "Left PGA Mux" }, |
| { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" }, |
| { "Left ADC Mux", "Digital Mono", "Left PGA Mux" }, |
| |
| { "Right ADC Mux", "Stereo", "Right PGA Mux" }, |
| { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" }, |
| { "Right ADC Mux", "Digital Mono", "Right PGA Mux" }, |
| |
| { "Left ADC", NULL, "Left ADC Mux" }, |
| { "Right ADC", NULL, "Right ADC Mux" }, |
| |
| { "Left Line Mux", "Line 1", "LINPUT1" }, |
| { "Left Line Mux", "Line 2", "LINPUT2" }, |
| { "Left Line Mux", "PGA", "Left PGA Mux" }, |
| { "Left Line Mux", "Differential", "Differential Mux" }, |
| |
| { "Right Line Mux", "Line 1", "RINPUT1" }, |
| { "Right Line Mux", "Line 2", "RINPUT2" }, |
| { "Right Line Mux", "PGA", "Right PGA Mux" }, |
| { "Right Line Mux", "Differential", "Differential Mux" }, |
| |
| { "Left Mixer", "Playback Switch", "Left DAC" }, |
| { "Left Mixer", "Left Bypass Switch", "Left Line Mux" }, |
| { "Left Mixer", "Right Playback Switch", "Right DAC" }, |
| { "Left Mixer", "Right Bypass Switch", "Right Line Mux" }, |
| |
| { "Right Mixer", "Left Playback Switch", "Left DAC" }, |
| { "Right Mixer", "Left Bypass Switch", "Left Line Mux" }, |
| { "Right Mixer", "Playback Switch", "Right DAC" }, |
| { "Right Mixer", "Right Bypass Switch", "Right Line Mux" }, |
| |
| { "Left Out 1", NULL, "Left Mixer" }, |
| { "LOUT1", NULL, "Left Out 1" }, |
| { "Right Out 1", NULL, "Right Mixer" }, |
| { "ROUT1", NULL, "Right Out 1" }, |
| |
| { "Left Out 2", NULL, "Left Mixer" }, |
| { "LOUT2", NULL, "Left Out 2" }, |
| { "Right Out 2", NULL, "Right Mixer" }, |
| { "ROUT2", NULL, "Right Out 2" }, |
| }; |
| |
| struct _coeff_div { |
| u32 mclk; |
| u32 rate; |
| u16 fs; |
| u8 sr:5; |
| u8 usb:1; |
| }; |
| |
| /* codec hifi mclk clock divider coefficients */ |
| static const struct _coeff_div coeff_div[] = { |
| /* 8k */ |
| {12288000, 8000, 1536, 0x6, 0x0}, |
| {11289600, 8000, 1408, 0x16, 0x0}, |
| {18432000, 8000, 2304, 0x7, 0x0}, |
| {16934400, 8000, 2112, 0x17, 0x0}, |
| {12000000, 8000, 1500, 0x6, 0x1}, |
| |
| /* 11.025k */ |
| {11289600, 11025, 1024, 0x18, 0x0}, |
| {16934400, 11025, 1536, 0x19, 0x0}, |
| {12000000, 11025, 1088, 0x19, 0x1}, |
| |
| /* 16k */ |
| {12288000, 16000, 768, 0xa, 0x0}, |
| {18432000, 16000, 1152, 0xb, 0x0}, |
| {12000000, 16000, 750, 0xa, 0x1}, |
| |
| /* 22.05k */ |
| {11289600, 22050, 512, 0x1a, 0x0}, |
| {16934400, 22050, 768, 0x1b, 0x0}, |
| {12000000, 22050, 544, 0x1b, 0x1}, |
| |
| /* 32k */ |
| {12288000, 32000, 384, 0xc, 0x0}, |
| {18432000, 32000, 576, 0xd, 0x0}, |
| {12000000, 32000, 375, 0xa, 0x1}, |
| |
| /* 44.1k */ |
| {11289600, 44100, 256, 0x10, 0x0}, |
| {16934400, 44100, 384, 0x11, 0x0}, |
| {12000000, 44100, 272, 0x11, 0x1}, |
| |
| /* 48k */ |
| {12288000, 48000, 256, 0x0, 0x0}, |
| {18432000, 48000, 384, 0x1, 0x0}, |
| {12000000, 48000, 250, 0x0, 0x1}, |
| |
| /* 88.2k */ |
| {11289600, 88200, 128, 0x1e, 0x0}, |
| {16934400, 88200, 192, 0x1f, 0x0}, |
| {12000000, 88200, 136, 0x1f, 0x1}, |
| |
| /* 96k */ |
| {12288000, 96000, 128, 0xe, 0x0}, |
| {18432000, 96000, 192, 0xf, 0x0}, |
| {12000000, 96000, 125, 0xe, 0x1}, |
| }; |
| |
| static inline int get_coeff(int mclk, int rate) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { |
| if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) |
| return i; |
| } |
| |
| return -EINVAL; |
| } |
| |
| /* The set of rates we can generate from the above for each SYSCLK */ |
| |
| static unsigned int rates_12288[] = { |
| 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000, |
| }; |
| |
| static struct snd_pcm_hw_constraint_list constraints_12288 = { |
| .count = ARRAY_SIZE(rates_12288), |
| .list = rates_12288, |
| }; |
| |
| static unsigned int rates_112896[] = { |
| 8000, 11025, 22050, 44100, |
| }; |
| |
| static struct snd_pcm_hw_constraint_list constraints_112896 = { |
| .count = ARRAY_SIZE(rates_112896), |
| .list = rates_112896, |
| }; |
| |
| static unsigned int rates_12[] = { |
| 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000, |
| 48000, 88235, 96000, |
| }; |
| |
| static struct snd_pcm_hw_constraint_list constraints_12 = { |
| .count = ARRAY_SIZE(rates_12), |
| .list = rates_12, |
| }; |
| |
| /* |
| * Note that this should be called from init rather than from hw_params. |
| */ |
| static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
| int clk_id, unsigned int freq, int dir) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); |
| |
| switch (freq) { |
| case 11289600: |
| case 18432000: |
| case 22579200: |
| case 36864000: |
| wm8988->sysclk_constraints = &constraints_112896; |
| wm8988->sysclk = freq; |
| return 0; |
| |
| case 12288000: |
| case 16934400: |
| case 24576000: |
| case 33868800: |
| wm8988->sysclk_constraints = &constraints_12288; |
| wm8988->sysclk = freq; |
| return 0; |
| |
| case 12000000: |
| case 24000000: |
| wm8988->sysclk_constraints = &constraints_12; |
| wm8988->sysclk = freq; |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| static int wm8988_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; |
| } |
| |
| snd_soc_write(codec, WM8988_IFACE, iface); |
| return 0; |
| } |
| |
| static int wm8988_pcm_startup(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); |
| |
| /* The set of sample rates that can be supported depends on the |
| * MCLK supplied to the CODEC - enforce this. |
| */ |
| if (!wm8988->sysclk) { |
| dev_err(codec->dev, |
| "No MCLK configured, call set_sysclk() on init\n"); |
| return -EINVAL; |
| } |
| |
| snd_pcm_hw_constraint_list(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_RATE, |
| wm8988->sysclk_constraints); |
| |
| return 0; |
| } |
| |
| static int wm8988_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; |
| struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); |
| u16 iface = snd_soc_read(codec, WM8988_IFACE) & 0x1f3; |
| u16 srate = snd_soc_read(codec, WM8988_SRATE) & 0x180; |
| int coeff; |
| |
| coeff = get_coeff(wm8988->sysclk, params_rate(params)); |
| if (coeff < 0) { |
| coeff = get_coeff(wm8988->sysclk / 2, params_rate(params)); |
| srate |= 0x40; |
| } |
| if (coeff < 0) { |
| dev_err(codec->dev, |
| "Unable to configure sample rate %dHz with %dHz MCLK\n", |
| params_rate(params), wm8988->sysclk); |
| return coeff; |
| } |
| |
| /* 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; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| iface |= 0x000c; |
| break; |
| } |
| |
| /* set iface & srate */ |
| snd_soc_write(codec, WM8988_IFACE, iface); |
| if (coeff >= 0) |
| snd_soc_write(codec, WM8988_SRATE, srate | |
| (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); |
| |
| return 0; |
| } |
| |
| static int wm8988_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 mute_reg = snd_soc_read(codec, WM8988_ADCDAC) & 0xfff7; |
| |
| if (mute) |
| snd_soc_write(codec, WM8988_ADCDAC, mute_reg | 0x8); |
| else |
| snd_soc_write(codec, WM8988_ADCDAC, mute_reg); |
| return 0; |
| } |
| |
| static int wm8988_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| u16 pwr_reg = snd_soc_read(codec, WM8988_PWR1) & ~0x1c1; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| break; |
| |
| case SND_SOC_BIAS_PREPARE: |
| /* VREF, VMID=2x50k, digital enabled */ |
| snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x00c0); |
| break; |
| |
| case SND_SOC_BIAS_STANDBY: |
| if (codec->bias_level == SND_SOC_BIAS_OFF) { |
| /* VREF, VMID=2x5k */ |
| snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x1c1); |
| |
| /* Charge caps */ |
| msleep(100); |
| } |
| |
| /* VREF, VMID=2*500k, digital stopped */ |
| snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x0141); |
| break; |
| |
| case SND_SOC_BIAS_OFF: |
| snd_soc_write(codec, WM8988_PWR1, 0x0000); |
| break; |
| } |
| codec->bias_level = level; |
| return 0; |
| } |
| |
| #define WM8988_RATES SNDRV_PCM_RATE_8000_96000 |
| |
| #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| SNDRV_PCM_FMTBIT_S24_LE) |
| |
| static struct snd_soc_dai_ops wm8988_ops = { |
| .startup = wm8988_pcm_startup, |
| .hw_params = wm8988_pcm_hw_params, |
| .set_fmt = wm8988_set_dai_fmt, |
| .set_sysclk = wm8988_set_dai_sysclk, |
| .digital_mute = wm8988_mute, |
| }; |
| |
| struct snd_soc_dai wm8988_dai = { |
| .name = "WM8988", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8988_RATES, |
| .formats = WM8988_FORMATS, |
| }, |
| .capture = { |
| .stream_name = "Capture", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8988_RATES, |
| .formats = WM8988_FORMATS, |
| }, |
| .ops = &wm8988_ops, |
| .symmetric_rates = 1, |
| }; |
| EXPORT_SYMBOL_GPL(wm8988_dai); |
| |
| static int wm8988_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; |
| |
| wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| return 0; |
| } |
| |
| static int wm8988_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 < WM8988_NUM_REG; i++) { |
| if (i == WM8988_RESET) |
| continue; |
| data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| data[1] = cache[i] & 0x00ff; |
| codec->hw_write(codec->control_data, data, 2); |
| } |
| |
| wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| return 0; |
| } |
| |
| static struct snd_soc_codec *wm8988_codec; |
| |
| static int wm8988_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| struct snd_soc_codec *codec; |
| int ret = 0; |
| |
| if (wm8988_codec == NULL) { |
| dev_err(&pdev->dev, "Codec device not registered\n"); |
| return -ENODEV; |
| } |
| |
| socdev->card->codec = wm8988_codec; |
| codec = wm8988_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, wm8988_snd_controls, |
| ARRAY_SIZE(wm8988_snd_controls)); |
| snd_soc_dapm_new_controls(codec, wm8988_dapm_widgets, |
| ARRAY_SIZE(wm8988_dapm_widgets)); |
| snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); |
| |
| return ret; |
| |
| pcm_err: |
| return ret; |
| } |
| |
| static int wm8988_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_wm8988 = { |
| .probe = wm8988_probe, |
| .remove = wm8988_remove, |
| .suspend = wm8988_suspend, |
| .resume = wm8988_resume, |
| }; |
| EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988); |
| |
| static int wm8988_register(struct wm8988_priv *wm8988, |
| enum snd_soc_control_type control) |
| { |
| struct snd_soc_codec *codec = &wm8988->codec; |
| int ret; |
| u16 reg; |
| |
| if (wm8988_codec) { |
| dev_err(codec->dev, "Another WM8988 is registered\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| mutex_init(&codec->mutex); |
| INIT_LIST_HEAD(&codec->dapm_widgets); |
| INIT_LIST_HEAD(&codec->dapm_paths); |
| |
| snd_soc_codec_set_drvdata(codec, wm8988); |
| codec->name = "WM8988"; |
| codec->owner = THIS_MODULE; |
| codec->dai = &wm8988_dai; |
| codec->num_dai = 1; |
| codec->reg_cache_size = ARRAY_SIZE(wm8988->reg_cache); |
| codec->reg_cache = &wm8988->reg_cache; |
| codec->bias_level = SND_SOC_BIAS_OFF; |
| codec->set_bias_level = wm8988_set_bias_level; |
| |
| memcpy(codec->reg_cache, wm8988_reg, |
| sizeof(wm8988_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 = wm8988_reset(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to issue reset\n"); |
| goto err; |
| } |
| |
| /* set the update bits (we always update left then right) */ |
| reg = snd_soc_read(codec, WM8988_RADC); |
| snd_soc_write(codec, WM8988_RADC, reg | 0x100); |
| reg = snd_soc_read(codec, WM8988_RDAC); |
| snd_soc_write(codec, WM8988_RDAC, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8988_ROUT1V); |
| snd_soc_write(codec, WM8988_ROUT1V, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8988_ROUT2V); |
| snd_soc_write(codec, WM8988_ROUT2V, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8988_RINVOL); |
| snd_soc_write(codec, WM8988_RINVOL, reg | 0x0100); |
| |
| wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_STANDBY); |
| |
| wm8988_dai.dev = codec->dev; |
| |
| wm8988_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(&wm8988_dai); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to register DAI: %d\n", ret); |
| snd_soc_unregister_codec(codec); |
| goto err_codec; |
| } |
| |
| return 0; |
| |
| err_codec: |
| snd_soc_unregister_codec(codec); |
| err: |
| kfree(wm8988); |
| return ret; |
| } |
| |
| static void wm8988_unregister(struct wm8988_priv *wm8988) |
| { |
| wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_OFF); |
| snd_soc_unregister_dai(&wm8988_dai); |
| snd_soc_unregister_codec(&wm8988->codec); |
| kfree(wm8988); |
| wm8988_codec = NULL; |
| } |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| static int wm8988_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct wm8988_priv *wm8988; |
| struct snd_soc_codec *codec; |
| |
| wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL); |
| if (wm8988 == NULL) |
| return -ENOMEM; |
| |
| codec = &wm8988->codec; |
| |
| i2c_set_clientdata(i2c, wm8988); |
| codec->control_data = i2c; |
| |
| codec->dev = &i2c->dev; |
| |
| return wm8988_register(wm8988, SND_SOC_I2C); |
| } |
| |
| static int wm8988_i2c_remove(struct i2c_client *client) |
| { |
| struct wm8988_priv *wm8988 = i2c_get_clientdata(client); |
| wm8988_unregister(wm8988); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8988_i2c_id[] = { |
| { "wm8988", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id); |
| |
| static struct i2c_driver wm8988_i2c_driver = { |
| .driver = { |
| .name = "WM8988", |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8988_i2c_probe, |
| .remove = wm8988_i2c_remove, |
| .id_table = wm8988_i2c_id, |
| }; |
| #endif |
| |
| #if defined(CONFIG_SPI_MASTER) |
| static int __devinit wm8988_spi_probe(struct spi_device *spi) |
| { |
| struct wm8988_priv *wm8988; |
| struct snd_soc_codec *codec; |
| |
| wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL); |
| if (wm8988 == NULL) |
| return -ENOMEM; |
| |
| codec = &wm8988->codec; |
| codec->control_data = spi; |
| codec->dev = &spi->dev; |
| |
| dev_set_drvdata(&spi->dev, wm8988); |
| |
| return wm8988_register(wm8988, SND_SOC_SPI); |
| } |
| |
| static int __devexit wm8988_spi_remove(struct spi_device *spi) |
| { |
| struct wm8988_priv *wm8988 = dev_get_drvdata(&spi->dev); |
| |
| wm8988_unregister(wm8988); |
| |
| return 0; |
| } |
| |
| static struct spi_driver wm8988_spi_driver = { |
| .driver = { |
| .name = "wm8988", |
| .bus = &spi_bus_type, |
| .owner = THIS_MODULE, |
| }, |
| .probe = wm8988_spi_probe, |
| .remove = __devexit_p(wm8988_spi_remove), |
| }; |
| #endif |
| |
| static int __init wm8988_modinit(void) |
| { |
| int ret; |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| ret = i2c_add_driver(&wm8988_i2c_driver); |
| if (ret != 0) |
| pr_err("WM8988: Unable to register I2C driver: %d\n", ret); |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| ret = spi_register_driver(&wm8988_spi_driver); |
| if (ret != 0) |
| pr_err("WM8988: Unable to register SPI driver: %d\n", ret); |
| #endif |
| return ret; |
| } |
| module_init(wm8988_modinit); |
| |
| static void __exit wm8988_exit(void) |
| { |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| i2c_del_driver(&wm8988_i2c_driver); |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| spi_unregister_driver(&wm8988_spi_driver); |
| #endif |
| } |
| module_exit(wm8988_exit); |
| |
| |
| MODULE_DESCRIPTION("ASoC WM8988 driver"); |
| MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_LICENSE("GPL"); |
