1098 lines
29 KiB
C
1098 lines
29 KiB
C
/*
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* wm8988.c -- WM8988 ALSA SoC audio driver
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*
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* Copyright 2009 Wolfson Microelectronics plc
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* Copyright 2005 Openedhand Ltd.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/spi/spi.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/tlv.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/initval.h>
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#include "wm8988.h"
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/*
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* wm8988 register cache
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* We can't read the WM8988 register space when we
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* are using 2 wire for device control, so we cache them instead.
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*/
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static const u16 wm8988_reg[] = {
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0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
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0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
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0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
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0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
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0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
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0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
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0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
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0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
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0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
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0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
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0x0079, 0x0079, 0x0079, /* 40 */
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};
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/* codec private data */
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struct wm8988_priv {
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unsigned int sysclk;
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struct snd_soc_codec codec;
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struct snd_pcm_hw_constraint_list *sysclk_constraints;
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u16 reg_cache[WM8988_NUM_REG];
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};
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/*
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* read wm8988 register cache
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*/
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static inline unsigned int wm8988_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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if (reg > WM8988_NUM_REG)
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return -1;
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return cache[reg];
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}
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/*
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* write wm8988 register cache
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*/
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static inline void wm8988_write_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg, unsigned int value)
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{
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u16 *cache = codec->reg_cache;
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if (reg > WM8988_NUM_REG)
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return;
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cache[reg] = value;
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}
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static int wm8988_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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u8 data[2];
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/* data is
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* D15..D9 WM8753 register offset
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* D8...D0 register data
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*/
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data[0] = (reg << 1) | ((value >> 8) & 0x0001);
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data[1] = value & 0x00ff;
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wm8988_write_reg_cache(codec, reg, value);
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if (codec->hw_write(codec->control_data, data, 2) == 2)
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return 0;
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else
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return -EIO;
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}
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#define wm8988_reset(c) wm8988_write(c, WM8988_RESET, 0)
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/*
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* WM8988 Controls
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*/
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static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"};
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static const struct soc_enum bass_boost =
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SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt);
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static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
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static const struct soc_enum bass_filter =
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SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt);
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static const char *treble_txt[] = {"8kHz", "4kHz"};
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static const struct soc_enum treble =
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SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt);
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static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
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static const struct soc_enum stereo_3d_lc =
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SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt);
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static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
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static const struct soc_enum stereo_3d_uc =
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SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt);
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static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
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static const struct soc_enum stereo_3d_func =
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SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt);
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static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
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static const struct soc_enum alc_func =
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SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt);
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static const char *ng_type_txt[] = {"Constant PGA Gain",
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"Mute ADC Output"};
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static const struct soc_enum ng_type =
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SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt);
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static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
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static const struct soc_enum deemph =
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SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt);
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static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert",
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"L + R Invert"};
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static const struct soc_enum adcpol =
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SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt);
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static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
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static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
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static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
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static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
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static const struct snd_kcontrol_new wm8988_snd_controls[] = {
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SOC_ENUM("Bass Boost", bass_boost),
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SOC_ENUM("Bass Filter", bass_filter),
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SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1),
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SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0),
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SOC_ENUM("Treble Cut-off", treble),
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SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0),
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SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0),
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SOC_ENUM("3D Lower Cut-off", stereo_3d_lc),
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SOC_ENUM("3D Upper Cut-off", stereo_3d_uc),
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SOC_ENUM("3D Mode", stereo_3d_func),
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SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0),
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SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0),
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SOC_ENUM("ALC Capture Function", alc_func),
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SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0),
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SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0),
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SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0),
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SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0),
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SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0),
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SOC_ENUM("ALC Capture NG Type", ng_type),
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SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0),
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SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0),
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SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC,
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0, 255, 0, adc_tlv),
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SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL,
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0, 63, 0, pga_tlv),
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SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0),
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SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1),
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SOC_ENUM("Playback De-emphasis", deemph),
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SOC_ENUM("Capture Polarity", adcpol),
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SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0),
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SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0),
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SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv),
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SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1,
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bypass_tlv),
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SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1,
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bypass_tlv),
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SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1,
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bypass_tlv),
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SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1,
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bypass_tlv),
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SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V,
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WM8988_ROUT1V, 7, 1, 0),
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SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V,
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0, 127, 0, out_tlv),
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SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V,
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WM8988_ROUT2V, 7, 1, 0),
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SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V,
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0, 127, 0, out_tlv),
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};
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/*
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* DAPM Controls
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*/
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static int wm8988_lrc_control(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_codec *codec = w->codec;
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u16 adctl2 = wm8988_read_reg_cache(codec, WM8988_ADCTL2);
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/* Use the DAC to gate LRC if active, otherwise use ADC */
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if (wm8988_read_reg_cache(codec, WM8988_PWR2) & 0x180)
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adctl2 &= ~0x4;
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else
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adctl2 |= 0x4;
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return wm8988_write(codec, WM8988_ADCTL2, adctl2);
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}
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static const char *wm8988_line_texts[] = {
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"Line 1", "Line 2", "PGA", "Differential"};
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static const unsigned int wm8988_line_values[] = {
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0, 1, 3, 4};
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static const struct soc_enum wm8988_lline_enum =
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SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7,
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ARRAY_SIZE(wm8988_line_texts),
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wm8988_line_texts,
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wm8988_line_values);
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static const struct snd_kcontrol_new wm8988_left_line_controls =
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SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
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static const struct soc_enum wm8988_rline_enum =
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SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7,
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ARRAY_SIZE(wm8988_line_texts),
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wm8988_line_texts,
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wm8988_line_values);
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static const struct snd_kcontrol_new wm8988_right_line_controls =
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SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
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/* Left Mixer */
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static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = {
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SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0),
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SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0),
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SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0),
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SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0),
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};
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/* Right Mixer */
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static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = {
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SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0),
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SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0),
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SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0),
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SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0),
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};
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static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"};
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static const unsigned int wm8988_pga_val[] = { 0, 1, 3 };
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/* Left PGA Mux */
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static const struct soc_enum wm8988_lpga_enum =
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SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3,
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ARRAY_SIZE(wm8988_pga_sel),
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wm8988_pga_sel,
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wm8988_pga_val);
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static const struct snd_kcontrol_new wm8988_left_pga_controls =
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SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum);
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/* Right PGA Mux */
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static const struct soc_enum wm8988_rpga_enum =
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SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3,
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ARRAY_SIZE(wm8988_pga_sel),
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wm8988_pga_sel,
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wm8988_pga_val);
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static const struct snd_kcontrol_new wm8988_right_pga_controls =
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SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum);
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/* Differential Mux */
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static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
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static const struct soc_enum diffmux =
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SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel);
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static const struct snd_kcontrol_new wm8988_diffmux_controls =
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SOC_DAPM_ENUM("Route", diffmux);
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/* Mono ADC Mux */
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static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)",
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"Mono (Right)", "Digital Mono"};
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static const struct soc_enum monomux =
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SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux);
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static const struct snd_kcontrol_new wm8988_monomux_controls =
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SOC_DAPM_ENUM("Route", monomux);
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static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = {
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SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0),
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SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
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&wm8988_diffmux_controls),
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SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
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&wm8988_monomux_controls),
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SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
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&wm8988_monomux_controls),
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SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0,
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&wm8988_left_pga_controls),
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SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0,
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&wm8988_right_pga_controls),
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SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
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&wm8988_left_line_controls),
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SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
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&wm8988_right_line_controls),
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SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0),
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SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0),
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SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0),
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SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0),
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SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
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&wm8988_left_mixer_controls[0],
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ARRAY_SIZE(wm8988_left_mixer_controls)),
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SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
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&wm8988_right_mixer_controls[0],
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ARRAY_SIZE(wm8988_right_mixer_controls)),
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SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0),
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SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control),
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SND_SOC_DAPM_OUTPUT("LOUT1"),
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SND_SOC_DAPM_OUTPUT("ROUT1"),
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SND_SOC_DAPM_OUTPUT("LOUT2"),
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SND_SOC_DAPM_OUTPUT("ROUT2"),
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SND_SOC_DAPM_OUTPUT("VREF"),
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SND_SOC_DAPM_INPUT("LINPUT1"),
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SND_SOC_DAPM_INPUT("LINPUT2"),
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SND_SOC_DAPM_INPUT("RINPUT1"),
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SND_SOC_DAPM_INPUT("RINPUT2"),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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{ "Left Line Mux", "Line 1", "LINPUT1" },
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{ "Left Line Mux", "Line 2", "LINPUT2" },
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{ "Left Line Mux", "PGA", "Left PGA Mux" },
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{ "Left Line Mux", "Differential", "Differential Mux" },
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{ "Right Line Mux", "Line 1", "RINPUT1" },
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{ "Right Line Mux", "Line 2", "RINPUT2" },
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{ "Right Line Mux", "PGA", "Right PGA Mux" },
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{ "Right Line Mux", "Differential", "Differential Mux" },
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{ "Left PGA Mux", "Line 1", "LINPUT1" },
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{ "Left PGA Mux", "Line 2", "LINPUT2" },
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{ "Left PGA Mux", "Differential", "Differential Mux" },
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{ "Right PGA Mux", "Line 1", "RINPUT1" },
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{ "Right PGA Mux", "Line 2", "RINPUT2" },
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{ "Right PGA Mux", "Differential", "Differential Mux" },
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{ "Differential Mux", "Line 1", "LINPUT1" },
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{ "Differential Mux", "Line 1", "RINPUT1" },
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{ "Differential Mux", "Line 2", "LINPUT2" },
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{ "Differential Mux", "Line 2", "RINPUT2" },
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{ "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 = codec->private_data;
|
|
|
|
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;
|
|
}
|
|
|
|
wm8988_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 = codec->private_data;
|
|
|
|
/* 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 = codec->private_data;
|
|
u16 iface = wm8988_read_reg_cache(codec, WM8988_IFACE) & 0x1f3;
|
|
u16 srate = wm8988_read_reg_cache(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 */
|
|
wm8988_write(codec, WM8988_IFACE, iface);
|
|
if (coeff >= 0)
|
|
wm8988_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 = wm8988_read_reg_cache(codec, WM8988_ADCDAC) & 0xfff7;
|
|
|
|
if (mute)
|
|
wm8988_write(codec, WM8988_ADCDAC, mute_reg | 0x8);
|
|
else
|
|
wm8988_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 = wm8988_read_reg_cache(codec, WM8988_PWR1) & ~0x1c1;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
break;
|
|
|
|
case SND_SOC_BIAS_PREPARE:
|
|
/* VREF, VMID=2x50k, digital enabled */
|
|
wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x00c0);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
if (codec->bias_level == SND_SOC_BIAS_OFF) {
|
|
/* VREF, VMID=2x5k */
|
|
wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x1c1);
|
|
|
|
/* Charge caps */
|
|
msleep(100);
|
|
}
|
|
|
|
/* VREF, VMID=2*500k, digital stopped */
|
|
wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x0141);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
wm8988_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));
|
|
snd_soc_dapm_new_widgets(codec);
|
|
|
|
ret = snd_soc_init_card(socdev);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to register card: %d\n", ret);
|
|
goto card_err;
|
|
}
|
|
|
|
return ret;
|
|
|
|
card_err:
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
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)
|
|
{
|
|
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);
|
|
|
|
codec->private_data = wm8988;
|
|
codec->name = "WM8988";
|
|
codec->owner = THIS_MODULE;
|
|
codec->read = wm8988_read_reg_cache;
|
|
codec->write = wm8988_write;
|
|
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 = wm8988_reset(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to issue reset\n");
|
|
return ret;
|
|
}
|
|
|
|
/* set the update bits (we always update left then right) */
|
|
reg = wm8988_read_reg_cache(codec, WM8988_RADC);
|
|
wm8988_write(codec, WM8988_RADC, reg | 0x100);
|
|
reg = wm8988_read_reg_cache(codec, WM8988_RDAC);
|
|
wm8988_write(codec, WM8988_RDAC, reg | 0x0100);
|
|
reg = wm8988_read_reg_cache(codec, WM8988_ROUT1V);
|
|
wm8988_write(codec, WM8988_ROUT1V, reg | 0x0100);
|
|
reg = wm8988_read_reg_cache(codec, WM8988_ROUT2V);
|
|
wm8988_write(codec, WM8988_ROUT2V, reg | 0x0100);
|
|
reg = wm8988_read_reg_cache(codec, WM8988_RINVOL);
|
|
wm8988_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);
|
|
return ret;
|
|
}
|
|
|
|
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);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
|
|
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;
|
|
codec->hw_write = (hw_write_t)i2c_master_send;
|
|
|
|
i2c_set_clientdata(i2c, wm8988);
|
|
codec->control_data = i2c;
|
|
|
|
codec->dev = &i2c->dev;
|
|
|
|
return wm8988_register(wm8988);
|
|
}
|
|
|
|
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 wm8988_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;
|
|
}
|
|
|
|
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->hw_write = (hw_write_t)wm8988_spi_write;
|
|
codec->control_data = spi;
|
|
codec->dev = &spi->dev;
|
|
|
|
dev_set_drvdata(&spi->dev, wm8988);
|
|
|
|
return wm8988_register(wm8988);
|
|
}
|
|
|
|
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");
|