966 lines
26 KiB
C
966 lines
26 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/slab.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/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 struct reg_default wm8988_reg_defaults[] = {
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{ 0, 0x0097 },
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{ 1, 0x0097 },
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{ 2, 0x0079 },
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{ 3, 0x0079 },
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{ 5, 0x0008 },
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{ 7, 0x000a },
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{ 8, 0x0000 },
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{ 10, 0x00ff },
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{ 11, 0x00ff },
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{ 12, 0x000f },
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{ 13, 0x000f },
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{ 16, 0x0000 },
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{ 17, 0x007b },
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{ 18, 0x0000 },
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{ 19, 0x0032 },
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{ 20, 0x0000 },
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{ 21, 0x00c3 },
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{ 22, 0x00c3 },
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{ 23, 0x00c0 },
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{ 24, 0x0000 },
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{ 25, 0x0000 },
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{ 26, 0x0000 },
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{ 27, 0x0000 },
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{ 31, 0x0000 },
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{ 32, 0x0000 },
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{ 33, 0x0000 },
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{ 34, 0x0050 },
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{ 35, 0x0050 },
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{ 36, 0x0050 },
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{ 37, 0x0050 },
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{ 40, 0x0079 },
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{ 41, 0x0079 },
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{ 42, 0x0079 },
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};
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static bool wm8988_writeable(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case WM8988_LINVOL:
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case WM8988_RINVOL:
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case WM8988_LOUT1V:
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case WM8988_ROUT1V:
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case WM8988_ADCDAC:
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case WM8988_IFACE:
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case WM8988_SRATE:
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case WM8988_LDAC:
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case WM8988_RDAC:
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case WM8988_BASS:
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case WM8988_TREBLE:
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case WM8988_RESET:
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case WM8988_3D:
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case WM8988_ALC1:
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case WM8988_ALC2:
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case WM8988_ALC3:
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case WM8988_NGATE:
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case WM8988_LADC:
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case WM8988_RADC:
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case WM8988_ADCTL1:
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case WM8988_ADCTL2:
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case WM8988_PWR1:
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case WM8988_PWR2:
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case WM8988_ADCTL3:
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case WM8988_ADCIN:
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case WM8988_LADCIN:
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case WM8988_RADCIN:
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case WM8988_LOUTM1:
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case WM8988_LOUTM2:
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case WM8988_ROUTM1:
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case WM8988_ROUTM2:
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case WM8988_LOUT2V:
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case WM8988_ROUT2V:
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case WM8988_LPPB:
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return true;
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default:
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return false;
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}
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}
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/* codec private data */
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struct wm8988_priv {
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struct regmap *regmap;
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unsigned int sysclk;
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const struct snd_pcm_hw_constraint_list *sysclk_constraints;
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};
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#define wm8988_reset(c) snd_soc_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 SOC_ENUM_SINGLE_DECL(bass_boost,
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WM8988_BASS, 7, bass_boost_txt);
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static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
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static SOC_ENUM_SINGLE_DECL(bass_filter,
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WM8988_BASS, 6, bass_filter_txt);
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static const char *treble_txt[] = {"8kHz", "4kHz"};
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static SOC_ENUM_SINGLE_DECL(treble,
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WM8988_TREBLE, 6, treble_txt);
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static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
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static SOC_ENUM_SINGLE_DECL(stereo_3d_lc,
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WM8988_3D, 5, stereo_3d_lc_txt);
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static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
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static SOC_ENUM_SINGLE_DECL(stereo_3d_uc,
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WM8988_3D, 6, stereo_3d_uc_txt);
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static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
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static SOC_ENUM_SINGLE_DECL(stereo_3d_func,
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WM8988_3D, 7, stereo_3d_func_txt);
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static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
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static SOC_ENUM_SINGLE_DECL(alc_func,
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WM8988_ALC1, 7, 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 SOC_ENUM_SINGLE_DECL(ng_type,
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WM8988_NGATE, 1, ng_type_txt);
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static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
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static SOC_ENUM_SINGLE_DECL(deemph,
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WM8988_ADCDAC, 1, 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 SOC_ENUM_SINGLE_DECL(adcpol,
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WM8988_ADCDAC, 5, 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 = snd_soc_dapm_to_codec(w->dapm);
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u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2);
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/* Use the DAC to gate LRC if active, otherwise use ADC */
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if (snd_soc_read(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 snd_soc_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_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_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_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_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 SOC_ENUM_SINGLE_DECL(diffmux,
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WM8988_ADCIN, 8, 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 SOC_ENUM_SINGLE_DECL(monomux,
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WM8988_ADCIN, 6, 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_SUPPLY("Mic Bias", WM8988_PWR1, 1, 0, NULL, 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 wm8988_dapm_routes[] = {
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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" },
|
|
{ "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 const unsigned int rates_12288[] = {
|
|
8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
|
|
};
|
|
|
|
static const struct snd_pcm_hw_constraint_list constraints_12288 = {
|
|
.count = ARRAY_SIZE(rates_12288),
|
|
.list = rates_12288,
|
|
};
|
|
|
|
static const unsigned int rates_112896[] = {
|
|
8000, 11025, 22050, 44100,
|
|
};
|
|
|
|
static const struct snd_pcm_hw_constraint_list constraints_112896 = {
|
|
.count = ARRAY_SIZE(rates_112896),
|
|
.list = rates_112896,
|
|
};
|
|
|
|
static const unsigned int rates_12[] = {
|
|
8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
|
|
48000, 88235, 96000,
|
|
};
|
|
|
|
static const 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_codec *codec = dai->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_width(params)) {
|
|
case 16:
|
|
break;
|
|
case 20:
|
|
iface |= 0x0004;
|
|
break;
|
|
case 24:
|
|
iface |= 0x0008;
|
|
break;
|
|
case 32:
|
|
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)
|
|
{
|
|
struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
|
|
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 (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
|
|
regcache_sync(wm8988->regmap);
|
|
|
|
/* 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;
|
|
}
|
|
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 const 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,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver wm8988_dai = {
|
|
.name = "wm8988-hifi",
|
|
.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,
|
|
};
|
|
|
|
static int wm8988_probe(struct snd_soc_codec *codec)
|
|
{
|
|
int ret = 0;
|
|
|
|
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) */
|
|
snd_soc_update_bits(codec, WM8988_RADC, 0x0100, 0x0100);
|
|
snd_soc_update_bits(codec, WM8988_RDAC, 0x0100, 0x0100);
|
|
snd_soc_update_bits(codec, WM8988_ROUT1V, 0x0100, 0x0100);
|
|
snd_soc_update_bits(codec, WM8988_ROUT2V, 0x0100, 0x0100);
|
|
snd_soc_update_bits(codec, WM8988_RINVOL, 0x0100, 0x0100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_codec_driver soc_codec_dev_wm8988 = {
|
|
.probe = wm8988_probe,
|
|
.set_bias_level = wm8988_set_bias_level,
|
|
.suspend_bias_off = true,
|
|
|
|
.component_driver = {
|
|
.controls = wm8988_snd_controls,
|
|
.num_controls = ARRAY_SIZE(wm8988_snd_controls),
|
|
.dapm_widgets = wm8988_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(wm8988_dapm_widgets),
|
|
.dapm_routes = wm8988_dapm_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(wm8988_dapm_routes),
|
|
},
|
|
};
|
|
|
|
static const struct regmap_config wm8988_regmap = {
|
|
.reg_bits = 7,
|
|
.val_bits = 9,
|
|
|
|
.max_register = WM8988_LPPB,
|
|
.writeable_reg = wm8988_writeable,
|
|
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.reg_defaults = wm8988_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(wm8988_reg_defaults),
|
|
};
|
|
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
static int wm8988_spi_probe(struct spi_device *spi)
|
|
{
|
|
struct wm8988_priv *wm8988;
|
|
int ret;
|
|
|
|
wm8988 = devm_kzalloc(&spi->dev, sizeof(struct wm8988_priv),
|
|
GFP_KERNEL);
|
|
if (wm8988 == NULL)
|
|
return -ENOMEM;
|
|
|
|
wm8988->regmap = devm_regmap_init_spi(spi, &wm8988_regmap);
|
|
if (IS_ERR(wm8988->regmap)) {
|
|
ret = PTR_ERR(wm8988->regmap);
|
|
dev_err(&spi->dev, "Failed to init regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
spi_set_drvdata(spi, wm8988);
|
|
|
|
ret = snd_soc_register_codec(&spi->dev,
|
|
&soc_codec_dev_wm8988, &wm8988_dai, 1);
|
|
return ret;
|
|
}
|
|
|
|
static int wm8988_spi_remove(struct spi_device *spi)
|
|
{
|
|
snd_soc_unregister_codec(&spi->dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct spi_driver wm8988_spi_driver = {
|
|
.driver = {
|
|
.name = "wm8988",
|
|
},
|
|
.probe = wm8988_spi_probe,
|
|
.remove = wm8988_spi_remove,
|
|
};
|
|
#endif /* CONFIG_SPI_MASTER */
|
|
|
|
#if IS_ENABLED(CONFIG_I2C)
|
|
static int wm8988_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct wm8988_priv *wm8988;
|
|
int ret;
|
|
|
|
wm8988 = devm_kzalloc(&i2c->dev, sizeof(struct wm8988_priv),
|
|
GFP_KERNEL);
|
|
if (wm8988 == NULL)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, wm8988);
|
|
|
|
wm8988->regmap = devm_regmap_init_i2c(i2c, &wm8988_regmap);
|
|
if (IS_ERR(wm8988->regmap)) {
|
|
ret = PTR_ERR(wm8988->regmap);
|
|
dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_register_codec(&i2c->dev,
|
|
&soc_codec_dev_wm8988, &wm8988_dai, 1);
|
|
return ret;
|
|
}
|
|
|
|
static int wm8988_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
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",
|
|
},
|
|
.probe = wm8988_i2c_probe,
|
|
.remove = wm8988_i2c_remove,
|
|
.id_table = wm8988_i2c_id,
|
|
};
|
|
#endif
|
|
|
|
static int __init wm8988_modinit(void)
|
|
{
|
|
int ret = 0;
|
|
#if IS_ENABLED(CONFIG_I2C)
|
|
ret = i2c_add_driver(&wm8988_i2c_driver);
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "Failed to register WM8988 I2C driver: %d\n",
|
|
ret);
|
|
}
|
|
#endif
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
ret = spi_register_driver(&wm8988_spi_driver);
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "Failed to register WM8988 SPI driver: %d\n",
|
|
ret);
|
|
}
|
|
#endif
|
|
return ret;
|
|
}
|
|
module_init(wm8988_modinit);
|
|
|
|
static void __exit wm8988_exit(void)
|
|
{
|
|
#if IS_ENABLED(CONFIG_I2C)
|
|
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");
|