943 lines
25 KiB
C
943 lines
25 KiB
C
/*
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* wm8960.c -- WM8960 ALSA SoC Audio driver
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*
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* Author: Liam Girdwood
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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/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/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include "wm8960.h"
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#define AUDIO_NAME "wm8960"
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struct snd_soc_codec_device soc_codec_dev_wm8960;
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/* R25 - Power 1 */
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#define WM8960_VREF 0x40
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/* R28 - Anti-pop 1 */
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#define WM8960_POBCTRL 0x80
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#define WM8960_BUFDCOPEN 0x10
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#define WM8960_BUFIOEN 0x08
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#define WM8960_SOFT_ST 0x04
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#define WM8960_HPSTBY 0x01
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/* R29 - Anti-pop 2 */
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#define WM8960_DISOP 0x40
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/*
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* wm8960 register cache
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* We can't read the WM8960 register space when we are
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* using 2 wire for device control, so we cache them instead.
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*/
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static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
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0x0097, 0x0097, 0x0000, 0x0000,
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0x0000, 0x0008, 0x0000, 0x000a,
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0x01c0, 0x0000, 0x00ff, 0x00ff,
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0x0000, 0x0000, 0x0000, 0x0000,
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0x0000, 0x007b, 0x0100, 0x0032,
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0x0000, 0x00c3, 0x00c3, 0x01c0,
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0x0000, 0x0000, 0x0000, 0x0000,
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0x0000, 0x0000, 0x0000, 0x0000,
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0x0100, 0x0100, 0x0050, 0x0050,
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0x0050, 0x0050, 0x0000, 0x0000,
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0x0000, 0x0000, 0x0040, 0x0000,
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0x0000, 0x0050, 0x0050, 0x0000,
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0x0002, 0x0037, 0x004d, 0x0080,
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0x0008, 0x0031, 0x0026, 0x00e9,
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};
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struct wm8960_priv {
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u16 reg_cache[WM8960_CACHEREGNUM];
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struct snd_soc_codec codec;
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};
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#define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
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/* enumerated controls */
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static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
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static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
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"Right Inverted", "Stereo Inversion"};
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static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
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static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
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static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
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static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
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static const struct soc_enum wm8960_enum[] = {
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SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph),
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SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
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SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
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SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
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SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
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SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
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SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
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};
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
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static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
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static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
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static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
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static const struct snd_kcontrol_new wm8960_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
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0, 63, 0, adc_tlv),
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SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
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6, 1, 0),
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SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
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7, 1, 0),
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SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
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0, 255, 0, dac_tlv),
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SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
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0, 127, 0, out_tlv),
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SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
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7, 1, 0),
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SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
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0, 127, 0, out_tlv),
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SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
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7, 1, 0),
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SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
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SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
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SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
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SOC_ENUM("ADC Polarity", wm8960_enum[1]),
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SOC_ENUM("Playback De-emphasis", wm8960_enum[0]),
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SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
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SOC_ENUM("DAC Polarity", wm8960_enum[2]),
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SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]),
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SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]),
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SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
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SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
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SOC_ENUM("ALC Function", wm8960_enum[5]),
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SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
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SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
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SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
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SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
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SOC_ENUM("ALC Mode", wm8960_enum[6]),
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SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
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SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
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SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
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SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
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SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
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0, 127, 0),
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SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
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WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
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SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
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WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
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SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
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WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
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SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
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WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
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};
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static const struct snd_kcontrol_new wm8960_lin_boost[] = {
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SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
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SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
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SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
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};
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static const struct snd_kcontrol_new wm8960_lin[] = {
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SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
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};
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static const struct snd_kcontrol_new wm8960_rin_boost[] = {
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SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
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SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
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SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
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};
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static const struct snd_kcontrol_new wm8960_rin[] = {
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SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
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};
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static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
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SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
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SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
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SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
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};
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static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
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SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
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SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
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SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
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};
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static const struct snd_kcontrol_new wm8960_mono_out[] = {
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SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
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SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
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};
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static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("LINPUT1"),
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SND_SOC_DAPM_INPUT("RINPUT1"),
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SND_SOC_DAPM_INPUT("LINPUT2"),
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SND_SOC_DAPM_INPUT("RINPUT2"),
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SND_SOC_DAPM_INPUT("LINPUT3"),
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SND_SOC_DAPM_INPUT("RINPUT3"),
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SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
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SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
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wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
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SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
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wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
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SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
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wm8960_lin, ARRAY_SIZE(wm8960_lin)),
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SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
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wm8960_rin, ARRAY_SIZE(wm8960_rin)),
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SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
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SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
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SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
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SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
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SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
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&wm8960_loutput_mixer[0],
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ARRAY_SIZE(wm8960_loutput_mixer)),
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SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
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&wm8960_routput_mixer[0],
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ARRAY_SIZE(wm8960_routput_mixer)),
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SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
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&wm8960_mono_out[0],
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ARRAY_SIZE(wm8960_mono_out)),
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SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
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SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
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SND_SOC_DAPM_OUTPUT("SPK_LP"),
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SND_SOC_DAPM_OUTPUT("SPK_LN"),
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SND_SOC_DAPM_OUTPUT("HP_L"),
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SND_SOC_DAPM_OUTPUT("HP_R"),
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SND_SOC_DAPM_OUTPUT("SPK_RP"),
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SND_SOC_DAPM_OUTPUT("SPK_RN"),
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SND_SOC_DAPM_OUTPUT("OUT3"),
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};
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static const struct snd_soc_dapm_route audio_paths[] = {
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{ "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
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{ "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
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{ "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
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{ "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
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{ "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
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{ "Left Input Mixer", NULL, "LINPUT2" },
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{ "Left Input Mixer", NULL, "LINPUT3" },
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{ "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
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{ "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
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{ "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
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{ "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
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{ "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
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{ "Right Input Mixer", NULL, "RINPUT2" },
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{ "Right Input Mixer", NULL, "LINPUT3" },
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{ "Left ADC", NULL, "Left Input Mixer" },
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{ "Right ADC", NULL, "Right Input Mixer" },
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{ "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
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{ "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
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{ "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
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{ "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
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{ "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
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{ "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
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{ "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
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{ "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
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{ "LOUT1 PGA", NULL, "Left Output Mixer" },
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{ "ROUT1 PGA", NULL, "Right Output Mixer" },
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{ "HP_L", NULL, "LOUT1 PGA" },
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{ "HP_R", NULL, "ROUT1 PGA" },
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{ "Left Speaker PGA", NULL, "Left Output Mixer" },
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{ "Right Speaker PGA", NULL, "Right Output Mixer" },
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{ "Left Speaker Output", NULL, "Left Speaker PGA" },
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{ "Right Speaker Output", NULL, "Right Speaker PGA" },
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{ "SPK_LN", NULL, "Left Speaker Output" },
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{ "SPK_LP", NULL, "Left Speaker Output" },
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{ "SPK_RN", NULL, "Right Speaker Output" },
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{ "SPK_RP", NULL, "Right Speaker Output" },
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{ "OUT3", NULL, "Mono Output Mixer", }
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};
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static int wm8960_add_widgets(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
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ARRAY_SIZE(wm8960_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
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snd_soc_dapm_new_widgets(codec);
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return 0;
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}
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static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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u16 iface = 0;
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/* set master/slave audio interface */
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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iface |= 0x0040;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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break;
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default:
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return -EINVAL;
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}
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/* interface format */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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iface |= 0x0002;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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iface |= 0x0001;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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iface |= 0x0003;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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iface |= 0x0013;
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break;
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default:
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return -EINVAL;
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}
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/* clock inversion */
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_IB_IF:
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iface |= 0x0090;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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iface |= 0x0080;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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iface |= 0x0010;
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break;
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default:
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return -EINVAL;
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}
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/* set iface */
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snd_soc_write(codec, WM8960_IFACE1, iface);
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return 0;
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}
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static int wm8960_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->codec;
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u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
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/* bit size */
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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iface |= 0x0004;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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iface |= 0x0008;
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break;
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}
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/* set iface */
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snd_soc_write(codec, WM8960_IFACE1, iface);
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return 0;
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}
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|
|
static int wm8960_mute(struct snd_soc_dai *dai, int mute)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
|
|
|
|
if (mute)
|
|
snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
|
|
else
|
|
snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8960_set_bias_level(struct snd_soc_codec *codec,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct wm8960_data *pdata = codec->dev->platform_data;
|
|
u16 reg;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
break;
|
|
|
|
case SND_SOC_BIAS_PREPARE:
|
|
/* Set VMID to 2x50k */
|
|
reg = snd_soc_read(codec, WM8960_POWER1);
|
|
reg &= ~0x180;
|
|
reg |= 0x80;
|
|
snd_soc_write(codec, WM8960_POWER1, reg);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
if (codec->bias_level == SND_SOC_BIAS_OFF) {
|
|
/* Enable anti-pop features */
|
|
snd_soc_write(codec, WM8960_APOP1,
|
|
WM8960_POBCTRL | WM8960_SOFT_ST |
|
|
WM8960_BUFDCOPEN | WM8960_BUFIOEN);
|
|
|
|
/* Discharge HP output */
|
|
reg = WM8960_DISOP;
|
|
if (pdata)
|
|
reg |= pdata->dres << 4;
|
|
snd_soc_write(codec, WM8960_APOP2, reg);
|
|
|
|
msleep(400);
|
|
|
|
snd_soc_write(codec, WM8960_APOP2, 0);
|
|
|
|
/* Enable & ramp VMID at 2x50k */
|
|
reg = snd_soc_read(codec, WM8960_POWER1);
|
|
reg |= 0x80;
|
|
snd_soc_write(codec, WM8960_POWER1, reg);
|
|
msleep(100);
|
|
|
|
/* Enable VREF */
|
|
snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
|
|
|
|
/* Disable anti-pop features */
|
|
snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
|
|
}
|
|
|
|
/* Set VMID to 2x250k */
|
|
reg = snd_soc_read(codec, WM8960_POWER1);
|
|
reg &= ~0x180;
|
|
reg |= 0x100;
|
|
snd_soc_write(codec, WM8960_POWER1, reg);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
/* Enable anti-pop features */
|
|
snd_soc_write(codec, WM8960_APOP1,
|
|
WM8960_POBCTRL | WM8960_SOFT_ST |
|
|
WM8960_BUFDCOPEN | WM8960_BUFIOEN);
|
|
|
|
/* Disable VMID and VREF, let them discharge */
|
|
snd_soc_write(codec, WM8960_POWER1, 0);
|
|
msleep(600);
|
|
|
|
snd_soc_write(codec, WM8960_APOP1, 0);
|
|
break;
|
|
}
|
|
|
|
codec->bias_level = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* PLL divisors */
|
|
struct _pll_div {
|
|
u32 pre_div:1;
|
|
u32 n:4;
|
|
u32 k:24;
|
|
};
|
|
|
|
/* The size in bits of the pll divide multiplied by 10
|
|
* to allow rounding later */
|
|
#define FIXED_PLL_SIZE ((1 << 24) * 10)
|
|
|
|
static int pll_factors(unsigned int source, unsigned int target,
|
|
struct _pll_div *pll_div)
|
|
{
|
|
unsigned long long Kpart;
|
|
unsigned int K, Ndiv, Nmod;
|
|
|
|
pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
|
|
|
|
/* Scale up target to PLL operating frequency */
|
|
target *= 4;
|
|
|
|
Ndiv = target / source;
|
|
if (Ndiv < 6) {
|
|
source >>= 1;
|
|
pll_div->pre_div = 1;
|
|
Ndiv = target / source;
|
|
} else
|
|
pll_div->pre_div = 0;
|
|
|
|
if ((Ndiv < 6) || (Ndiv > 12)) {
|
|
pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pll_div->n = Ndiv;
|
|
Nmod = target % source;
|
|
Kpart = FIXED_PLL_SIZE * (long long)Nmod;
|
|
|
|
do_div(Kpart, source);
|
|
|
|
K = Kpart & 0xFFFFFFFF;
|
|
|
|
/* Check if we need to round */
|
|
if ((K % 10) >= 5)
|
|
K += 5;
|
|
|
|
/* Move down to proper range now rounding is done */
|
|
K /= 10;
|
|
|
|
pll_div->k = K;
|
|
|
|
pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
|
|
pll_div->n, pll_div->k, pll_div->pre_div);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai,
|
|
int pll_id, unsigned int freq_in, unsigned int freq_out)
|
|
{
|
|
struct snd_soc_codec *codec = codec_dai->codec;
|
|
u16 reg;
|
|
static struct _pll_div pll_div;
|
|
int ret;
|
|
|
|
if (freq_in && freq_out) {
|
|
ret = pll_factors(freq_in, freq_out, &pll_div);
|
|
if (ret != 0)
|
|
return ret;
|
|
}
|
|
|
|
/* Disable the PLL: even if we are changing the frequency the
|
|
* PLL needs to be disabled while we do so. */
|
|
snd_soc_write(codec, WM8960_CLOCK1,
|
|
snd_soc_read(codec, WM8960_CLOCK1) & ~1);
|
|
snd_soc_write(codec, WM8960_POWER2,
|
|
snd_soc_read(codec, WM8960_POWER2) & ~1);
|
|
|
|
if (!freq_in || !freq_out)
|
|
return 0;
|
|
|
|
reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
|
|
reg |= pll_div.pre_div << 4;
|
|
reg |= pll_div.n;
|
|
|
|
if (pll_div.k) {
|
|
reg |= 0x20;
|
|
|
|
snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
|
|
snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
|
|
snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
|
|
}
|
|
snd_soc_write(codec, WM8960_PLL1, reg);
|
|
|
|
/* Turn it on */
|
|
snd_soc_write(codec, WM8960_POWER2,
|
|
snd_soc_read(codec, WM8960_POWER2) | 1);
|
|
msleep(250);
|
|
snd_soc_write(codec, WM8960_CLOCK1,
|
|
snd_soc_read(codec, WM8960_CLOCK1) | 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
|
|
int div_id, int div)
|
|
{
|
|
struct snd_soc_codec *codec = codec_dai->codec;
|
|
u16 reg;
|
|
|
|
switch (div_id) {
|
|
case WM8960_SYSCLKSEL:
|
|
reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe;
|
|
snd_soc_write(codec, WM8960_CLOCK1, reg | div);
|
|
break;
|
|
case WM8960_SYSCLKDIV:
|
|
reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
|
|
snd_soc_write(codec, WM8960_CLOCK1, reg | div);
|
|
break;
|
|
case WM8960_DACDIV:
|
|
reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
|
|
snd_soc_write(codec, WM8960_CLOCK1, reg | div);
|
|
break;
|
|
case WM8960_OPCLKDIV:
|
|
reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
|
|
snd_soc_write(codec, WM8960_PLL1, reg | div);
|
|
break;
|
|
case WM8960_DCLKDIV:
|
|
reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
|
|
snd_soc_write(codec, WM8960_CLOCK2, reg | div);
|
|
break;
|
|
case WM8960_TOCLKSEL:
|
|
reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
|
|
snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define WM8960_RATES SNDRV_PCM_RATE_8000_48000
|
|
|
|
#define WM8960_FORMATS \
|
|
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
|
|
SNDRV_PCM_FMTBIT_S24_LE)
|
|
|
|
static struct snd_soc_dai_ops wm8960_dai_ops = {
|
|
.hw_params = wm8960_hw_params,
|
|
.digital_mute = wm8960_mute,
|
|
.set_fmt = wm8960_set_dai_fmt,
|
|
.set_clkdiv = wm8960_set_dai_clkdiv,
|
|
.set_pll = wm8960_set_dai_pll,
|
|
};
|
|
|
|
struct snd_soc_dai wm8960_dai = {
|
|
.name = "WM8960",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = WM8960_RATES,
|
|
.formats = WM8960_FORMATS,},
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = WM8960_RATES,
|
|
.formats = WM8960_FORMATS,},
|
|
.ops = &wm8960_dai_ops,
|
|
.symmetric_rates = 1,
|
|
};
|
|
EXPORT_SYMBOL_GPL(wm8960_dai);
|
|
|
|
static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8960_resume(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
int i;
|
|
u8 data[2];
|
|
u16 *cache = codec->reg_cache;
|
|
|
|
/* Sync reg_cache with the hardware */
|
|
for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
|
|
data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
|
|
data[1] = cache[i] & 0x00ff;
|
|
codec->hw_write(codec->control_data, data, 2);
|
|
}
|
|
|
|
wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
wm8960_set_bias_level(codec, codec->suspend_bias_level);
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_codec *wm8960_codec;
|
|
|
|
static int wm8960_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec;
|
|
int ret = 0;
|
|
|
|
if (wm8960_codec == NULL) {
|
|
dev_err(&pdev->dev, "Codec device not registered\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
socdev->card->codec = wm8960_codec;
|
|
codec = wm8960_codec;
|
|
|
|
/* register pcms */
|
|
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to create pcms: %d\n", ret);
|
|
goto pcm_err;
|
|
}
|
|
|
|
snd_soc_add_controls(codec, wm8960_snd_controls,
|
|
ARRAY_SIZE(wm8960_snd_controls));
|
|
wm8960_add_widgets(codec);
|
|
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;
|
|
}
|
|
|
|
/* power down chip */
|
|
static int wm8960_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct snd_soc_codec_device soc_codec_dev_wm8960 = {
|
|
.probe = wm8960_probe,
|
|
.remove = wm8960_remove,
|
|
.suspend = wm8960_suspend,
|
|
.resume = wm8960_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
|
|
|
|
static int wm8960_register(struct wm8960_priv *wm8960,
|
|
enum snd_soc_control_type control)
|
|
{
|
|
struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
|
|
struct snd_soc_codec *codec = &wm8960->codec;
|
|
int ret;
|
|
u16 reg;
|
|
|
|
if (wm8960_codec) {
|
|
dev_err(codec->dev, "Another WM8960 is registered\n");
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
if (!pdata) {
|
|
dev_warn(codec->dev, "No platform data supplied\n");
|
|
} else {
|
|
if (pdata->dres > WM8960_DRES_MAX) {
|
|
dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
|
|
pdata->dres = 0;
|
|
}
|
|
}
|
|
|
|
mutex_init(&codec->mutex);
|
|
INIT_LIST_HEAD(&codec->dapm_widgets);
|
|
INIT_LIST_HEAD(&codec->dapm_paths);
|
|
|
|
codec->private_data = wm8960;
|
|
codec->name = "WM8960";
|
|
codec->owner = THIS_MODULE;
|
|
codec->bias_level = SND_SOC_BIAS_OFF;
|
|
codec->set_bias_level = wm8960_set_bias_level;
|
|
codec->dai = &wm8960_dai;
|
|
codec->num_dai = 1;
|
|
codec->reg_cache_size = WM8960_CACHEREGNUM;
|
|
codec->reg_cache = &wm8960->reg_cache;
|
|
|
|
memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
|
|
|
|
ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
ret = wm8960_reset(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to issue reset\n");
|
|
goto err;
|
|
}
|
|
|
|
wm8960_dai.dev = codec->dev;
|
|
|
|
wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
/* Latch the update bits */
|
|
reg = snd_soc_read(codec, WM8960_LINVOL);
|
|
snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_RINVOL);
|
|
snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_LADC);
|
|
snd_soc_write(codec, WM8960_LADC, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_RADC);
|
|
snd_soc_write(codec, WM8960_RADC, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_LDAC);
|
|
snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_RDAC);
|
|
snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_LOUT1);
|
|
snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_ROUT1);
|
|
snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_LOUT2);
|
|
snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
|
|
reg = snd_soc_read(codec, WM8960_ROUT2);
|
|
snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
|
|
|
|
wm8960_codec = codec;
|
|
|
|
ret = snd_soc_register_codec(codec);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
ret = snd_soc_register_dai(&wm8960_dai);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
|
|
goto err_codec;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_codec:
|
|
snd_soc_unregister_codec(codec);
|
|
err:
|
|
kfree(wm8960);
|
|
return ret;
|
|
}
|
|
|
|
static void wm8960_unregister(struct wm8960_priv *wm8960)
|
|
{
|
|
wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
|
|
snd_soc_unregister_dai(&wm8960_dai);
|
|
snd_soc_unregister_codec(&wm8960->codec);
|
|
kfree(wm8960);
|
|
wm8960_codec = NULL;
|
|
}
|
|
|
|
static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct wm8960_priv *wm8960;
|
|
struct snd_soc_codec *codec;
|
|
|
|
wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
|
|
if (wm8960 == NULL)
|
|
return -ENOMEM;
|
|
|
|
codec = &wm8960->codec;
|
|
|
|
i2c_set_clientdata(i2c, wm8960);
|
|
codec->control_data = i2c;
|
|
|
|
codec->dev = &i2c->dev;
|
|
|
|
return wm8960_register(wm8960, SND_SOC_I2C);
|
|
}
|
|
|
|
static __devexit int wm8960_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
|
|
wm8960_unregister(wm8960);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
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static int wm8960_i2c_suspend(struct i2c_client *client, pm_message_t msg)
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{
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return snd_soc_suspend_device(&client->dev);
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}
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static int wm8960_i2c_resume(struct i2c_client *client)
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{
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return snd_soc_resume_device(&client->dev);
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}
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#else
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#define wm8960_i2c_suspend NULL
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#define wm8960_i2c_resume NULL
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#endif
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static const struct i2c_device_id wm8960_i2c_id[] = {
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{ "wm8960", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
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static struct i2c_driver wm8960_i2c_driver = {
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.driver = {
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.name = "WM8960 I2C Codec",
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.owner = THIS_MODULE,
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},
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.probe = wm8960_i2c_probe,
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.remove = __devexit_p(wm8960_i2c_remove),
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.suspend = wm8960_i2c_suspend,
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.resume = wm8960_i2c_resume,
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.id_table = wm8960_i2c_id,
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};
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static int __init wm8960_modinit(void)
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{
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int ret;
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ret = i2c_add_driver(&wm8960_i2c_driver);
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if (ret != 0) {
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printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
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ret);
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}
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return ret;
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}
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module_init(wm8960_modinit);
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static void __exit wm8960_exit(void)
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{
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i2c_del_driver(&wm8960_i2c_driver);
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}
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module_exit(wm8960_exit);
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MODULE_DESCRIPTION("ASoC WM8960 driver");
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MODULE_AUTHOR("Liam Girdwood");
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MODULE_LICENSE("GPL");
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