545 lines
15 KiB
C
Executable File
545 lines
15 KiB
C
Executable File
/*
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* max9867.c -- max9867 ALSA SoC Audio driver
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*
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* Copyright 2013-15 Maxim Integrated Products
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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/delay.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "max9867.h"
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static const char *const max9867_spmode[] = {
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"Stereo Diff", "Mono Diff",
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"Stereo Cap", "Mono Cap",
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"Stereo Single", "Mono Single",
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"Stereo Single Fast", "Mono Single Fast"
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};
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static const char *const max9867_sidetone_text[] = {
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"None", "Left", "Right", "LeftRight", "LeftRightDiv2",
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};
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static const char *const max9867_filter_text[] = {"IIR", "FIR"};
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static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7,
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max9867_filter_text);
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static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
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max9867_spmode);
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static SOC_ENUM_SINGLE_DECL(max9867_sidetone, MAX9867_DACGAIN, 6,
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max9867_sidetone_text);
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static DECLARE_TLV_DB_SCALE(max9860_capture_tlv, -600, 200, 0);
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static DECLARE_TLV_DB_SCALE(max9860_mic_tlv, 2000, 100, 1);
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static DECLARE_TLV_DB_SCALE(max9860_adc_left_tlv, -1200, 100, 1);
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static DECLARE_TLV_DB_SCALE(max9860_adc_right_tlv, -1200, 100, 1);
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static const unsigned int max98088_micboost_tlv[] = {
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TLV_DB_RANGE_HEAD(2),
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0, 1, TLV_DB_SCALE_ITEM(0, 2000, 0),
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2, 2, TLV_DB_SCALE_ITEM(3000, 0, 0),
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};
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static const struct snd_kcontrol_new max9867_snd_controls[] = {
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SOC_DOUBLE_R("Master Playback Volume", MAX9867_LEFTVOL,
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MAX9867_RIGHTVOL, 0, 63, 1),
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SOC_DOUBLE_R_TLV("Capture Volume", MAX9867_LEFTMICGAIN,
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MAX9867_RIGHTMICGAIN,
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0, 15, 1, max9860_capture_tlv),
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SOC_DOUBLE_R_TLV("Mic Volume", MAX9867_LEFTMICGAIN,
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MAX9867_RIGHTMICGAIN, 0, 31, 1, max9860_mic_tlv),
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SOC_DOUBLE_R_TLV("Mic Boost Volume", MAX9867_LEFTMICGAIN,
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MAX9867_RIGHTMICGAIN, 5, 3, 0, max98088_micboost_tlv),
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SOC_ENUM("Digital Sidetone Src", max9867_sidetone),
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SOC_SINGLE("Sidetone Volume", MAX9867_DACGAIN, 0, 31, 1),
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SOC_SINGLE("DAC Volume", MAX9867_DACLEVEL, 4, 3, 0),
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SOC_SINGLE("DAC Attenuation", MAX9867_DACLEVEL, 0, 15, 1),
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SOC_SINGLE_TLV("ADC Left Volume", MAX9867_ADCLEVEL,
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4, 15, 1, max9860_adc_left_tlv),
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SOC_SINGLE_TLV("ADC Right Volume", MAX9867_ADCLEVEL,
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0, 15, 1, max9860_adc_right_tlv),
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SOC_ENUM("Speaker Mode", max9867_spkmode),
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SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
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SOC_SINGLE("ZCD Switch", MAX9867_MODECONFIG, 5, 1, 0),
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SOC_ENUM("DSP Filter", max9867_filter),
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};
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static const char *const max9867_mux[] = {"None", "Mic", "Line", "Mic_Line"};
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static SOC_ENUM_SINGLE_DECL(max9867_mux_enum,
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MAX9867_INPUTCONFIG, MAX9867_INPUT_SHIFT,
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max9867_mux);
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static const struct snd_kcontrol_new max9867_dapm_mux_controls =
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SOC_DAPM_ENUM("Route", max9867_mux_enum);
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static const struct snd_kcontrol_new max9867_left_dapm_control =
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SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 6, 1, 0);
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static const struct snd_kcontrol_new max9867_right_dapm_control =
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SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 5, 1, 0);
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static const struct snd_kcontrol_new max9867_line_dapm_control =
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SOC_DAPM_SINGLE("Switch", MAX9867_LEFTLINELVL, 6, 1, 1);
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static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
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SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_DAC("Left DAC", NULL, MAX9867_PWRMAN, 3, 0),
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SND_SOC_DAPM_DAC("Right DAC", NULL, MAX9867_PWRMAN, 2, 0),
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SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
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SND_SOC_DAPM_OUTPUT("HPOUT"),
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SND_SOC_DAPM_AIF_IN("DAI_IN", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_ADC("Left ADC", "HiFi Capture", MAX9867_PWRMAN, 1, 0),
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SND_SOC_DAPM_ADC("Right ADC", "HiFi Capture", MAX9867_PWRMAN, 0, 0),
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SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
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&max9867_dapm_mux_controls),
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SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
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SND_SOC_DAPM_SWITCH("Left Line", MAX9867_LEFTLINELVL, 6, 1,
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&max9867_left_dapm_control),
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SND_SOC_DAPM_SWITCH("Right Line", MAX9867_RIGTHLINELVL, 6, 1,
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&max9867_right_dapm_control),
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SND_SOC_DAPM_SWITCH("Line Mixer", SND_SOC_NOPM, 0, 0,
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&max9867_line_dapm_control),
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SND_SOC_DAPM_INPUT("LINE_IN"),
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};
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static const struct snd_soc_dapm_route max9867_audio_map[] = {
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{"Left DAC", NULL, "DAI_OUT"},
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{"Right DAC", NULL, "DAI_OUT"},
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{"Output Mixer", NULL, "Left DAC"},
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{"Output Mixer", NULL, "Right DAC"},
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{"HPOUT", NULL, "Output Mixer"},
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{"Left ADC", NULL, "DAI_IN"},
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{"Right ADC", NULL, "DAI_IN"},
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{"Input Mixer", NULL, "Left ADC"},
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{"Input Mixer", NULL, "Right ADC"},
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{"Input Mux", "Line", "Input Mixer"},
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{"Input Mux", "Mic", "Input Mixer"},
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{"Input Mux", "Mic_Line", "Input Mixer"},
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{"Right Line", "Switch", "Input Mux"},
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{"Left Line", "Switch", "Input Mux"},
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{"LINE_IN", NULL, "Left Line"},
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{"LINE_IN", NULL, "Right Line"},
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};
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enum rates {
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pcm_rate_8, pcm_rate_16, pcm_rate_24,
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pcm_rate_32, pcm_rate_44,
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pcm_rate_48, max_pcm_rate,
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};
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struct ni_div_rates {
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u32 mclk;
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u16 ni[max_pcm_rate];
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} ni_div[] = {
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{11289600, {0x116A, 0x22D4, 0x343F, 0x45A9, 0x6000, 0x687D} },
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{12000000, {0x1062, 0x20C5, 0x3127, 0x4189, 0x5A51, 0x624E} },
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{12288000, {0x1000, 0x2000, 0x3000, 0x4000, 0x5833, 0x6000} },
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{13000000, {0x0F20, 0x1E3F, 0x2D5F, 0x3C7F, 0x535F, 0x5ABE} },
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{19200000, {0x0A3D, 0x147B, 0x1EB8, 0x28F6, 0x3873, 0x3D71} },
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{24000000, {0x1062, 0x20C5, 0x1893, 0x4189, 0x5A51, 0x624E} },
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{26000000, {0x0F20, 0x1E3F, 0x16AF, 0x3C7F, 0x535F, 0x5ABE} },
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{27000000, {0x0E90, 0x1D21, 0x15D8, 0x3A41, 0x5048, 0x5762} },
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};
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static inline int get_ni_value(int mclk, int rate)
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{
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int i, ret = 0;
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/* find the closest rate index*/
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for (i = 0; i < ARRAY_SIZE(ni_div); i++) {
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if (ni_div[i].mclk >= mclk)
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break;
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}
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switch (rate) {
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case 8000:
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return ni_div[i].ni[pcm_rate_8];
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case 16000:
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return ni_div[i].ni[pcm_rate_16];
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case 32000:
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return ni_div[i].ni[pcm_rate_32];
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case 44100:
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return ni_div[i].ni[pcm_rate_44];
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case 48000:
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return ni_div[i].ni[pcm_rate_48];
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default:
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pr_err("%s wrong rate %d\n", __func__, rate);
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ret = -EINVAL;
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}
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return ret;
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}
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static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec);
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unsigned int ni_h, ni_l, value;
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value = get_ni_value(max9867->sysclk, params_rate(params));
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if (value < 0)
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return value;
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ni_h = (0xFF00 & value) >> 8;
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ni_l = 0x00FF & value;
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/* set up the ni value */
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
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MAX9867_NI_HIGH_MASK, ni_h);
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
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MAX9867_NI_LOW_MASK, ni_l);
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if (!max9867->master) {
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/*
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* digital pll locks on to any externally supplied LRCLK signal
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* and also enable rapid lock mode.
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*/
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
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MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
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regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
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MAX9867_PLL, MAX9867_PLL);
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} else {
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unsigned long int bclk_rate, pclk_bclk_ratio;
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int bclk_value;
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bclk_rate = params_rate(params) * 2 *
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snd_pcm_format_width(params_format(params));
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pclk_bclk_ratio = max9867->pclk/bclk_rate;
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switch (snd_pcm_format_width(params_format(params))) {
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case 8:
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case 16:
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switch (pclk_bclk_ratio) {
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case 2:
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bclk_value = MAX9867_IFC1B_PCLK_2;
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break;
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case 4:
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bclk_value = MAX9867_IFC1B_PCLK_4;
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break;
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case 8:
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bclk_value = MAX9867_IFC1B_PCLK_8;
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break;
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case 16:
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bclk_value = MAX9867_IFC1B_PCLK_16;
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break;
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default:
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dev_err(codec->dev,
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"unsupported sampling rate\n");
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return -EINVAL;
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}
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break;
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case 24:
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bclk_value = MAX9867_IFC1B_24BIT;
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break;
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case 32:
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bclk_value = MAX9867_IFC1B_32BIT;
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break;
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default:
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dev_err(codec->dev, "unsupported sampling rate\n");
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return -EINVAL;
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}
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regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
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MAX9867_IFC1B_BCLK_MASK, bclk_value);
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}
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return 0;
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}
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static int max9867_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec);
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regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
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MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK);
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return 0;
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}
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static int max9867_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec);
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if (mute)
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regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
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MAX9867_DAC_MUTE_MASK, MAX9867_DAC_MUTE_MASK);
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else
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regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
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MAX9867_DAC_MUTE_MASK, 0);
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return 0;
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}
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static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec);
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int value = 0;
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/* Set the prescaler based on the master clock frequency*/
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if (freq >= 10000000 && freq <= 20000000) {
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value |= MAX9867_PSCLK_10_20;
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max9867->pclk = freq;
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} else if (freq >= 20000000 && freq <= 40000000) {
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value |= MAX9867_PSCLK_20_40;
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max9867->pclk = freq/2;
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} else if (freq >= 40000000 && freq <= 60000000) {
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value |= MAX9867_PSCLK_40_60;
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max9867->pclk = freq/4;
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} else {
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pr_err("bad clock frequency %d", freq);
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return -EINVAL;
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}
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value = value << MAX9867_PSCLK_SHIFT;
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max9867->sysclk = freq;
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/* exact integer mode is not supported */
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value &= ~MAX9867_FREQ_MASK;
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regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
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MAX9867_PSCLK_MASK, value);
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return 0;
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}
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static int max9867_dai_set_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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struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec);
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u8 iface1A = 0, iface1B = 0;
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int ret;
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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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max9867->master = 1;
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iface1A |= MAX9867_MASTER;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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max9867->master = 0;
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iface1A &= ~MAX9867_MASTER;
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break;
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default:
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return -EINVAL;
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}
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/* for i2s compatible mode */
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iface1A |= MAX9867_I2S_DLY;
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/* SDOUT goes to hiz state after all data is transferred */
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iface1A |= MAX9867_SDOUT_HIZ;
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/* Clock inversion bits, BCI and WCI */
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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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iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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iface1A |= MAX9867_BCI_MODE;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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iface1A |= MAX9867_WCI_MODE;
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break;
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default:
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return -EINVAL;
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}
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ret = regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
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ret = regmap_write(max9867->regmap, MAX9867_IFC1B, iface1B);
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return 0;
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}
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static struct snd_soc_dai_ops max9867_dai_ops = {
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.set_fmt = max9867_dai_set_fmt,
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.set_sysclk = max9867_set_dai_sysclk,
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.prepare = max9867_prepare,
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.digital_mute = max9867_mute,
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.hw_params = max9867_dai_hw_params,
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};
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#define MAX9867_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
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SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
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#define MAX9867_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
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static struct snd_soc_dai_driver max9867_dai[] = {
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{
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.name = "max9867-aif1",
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.playback = {
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.stream_name = "HiFi Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = MAX9867_RATES,
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.formats = MAX9867_FORMATS,
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},
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.capture = {
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.stream_name = "HiFi Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = MAX9867_RATES,
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.formats = MAX9867_FORMATS,
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},
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.ops = &max9867_dai_ops,
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}
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};
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#ifdef CONFIG_PM_SLEEP
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static int max9867_suspend(struct device *dev)
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{
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struct max9867_priv *max9867 = dev_get_drvdata(dev);
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/* Drop down to power saving mode when system is suspended */
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regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
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MAX9867_SHTDOWN_MASK, ~MAX9867_SHTDOWN_MASK);
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return 0;
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}
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static int max9867_resume(struct device *dev)
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{
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struct max9867_priv *max9867 = dev_get_drvdata(dev);
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regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
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MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK);
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return 0;
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}
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#endif
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static int max9867_probe(struct snd_soc_codec *codec)
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{
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struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec);
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dev_dbg(codec->dev, "max98090_probe\n");
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max9867->codec = codec;
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return 0;
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}
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static struct snd_soc_codec_driver max9867_codec = {
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.probe = max9867_probe,
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.controls = max9867_snd_controls,
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.num_controls = ARRAY_SIZE(max9867_snd_controls),
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.dapm_routes = max9867_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(max9867_audio_map),
|
|
.dapm_widgets = max9867_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets),
|
|
};
|
|
|
|
static bool max9867_volatile_register(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case MAX9867_STATUS:
|
|
case MAX9867_JACKSTATUS:
|
|
case MAX9867_AUXHIGH:
|
|
case MAX9867_AUXLOW:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static struct reg_default max9867_reg[] = {
|
|
{ 0x04, 0x00 },
|
|
{ 0x05, 0x00 },
|
|
{ 0x06, 0x00 },
|
|
{ 0x07, 0x00 },
|
|
{ 0x08, 0x00 },
|
|
{ 0x09, 0x00 },
|
|
{ 0x0A, 0x00 },
|
|
{ 0x0B, 0x00 },
|
|
{ 0x0C, 0x00 },
|
|
{ 0x0D, 0x00 },
|
|
{ 0x0E, 0x00 },
|
|
{ 0x0F, 0x00 },
|
|
{ 0x10, 0x00 },
|
|
{ 0x11, 0x00 },
|
|
{ 0x12, 0x00 },
|
|
{ 0x13, 0x00 },
|
|
{ 0x14, 0x00 },
|
|
{ 0x15, 0x00 },
|
|
{ 0x16, 0x00 },
|
|
{ 0x17, 0x00 },
|
|
};
|
|
|
|
static struct regmap_config max9867_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = MAX9867_REVISION,
|
|
.reg_defaults = max9867_reg,
|
|
.num_reg_defaults = ARRAY_SIZE(max9867_reg),
|
|
.volatile_reg = max9867_volatile_register,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static int max9867_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct max9867_priv *max9867;
|
|
int ret = 0, reg;
|
|
|
|
max9867 = devm_kzalloc(&i2c->dev,
|
|
sizeof(*max9867), GFP_KERNEL);
|
|
if (!max9867)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, max9867);
|
|
max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
|
|
if (IS_ERR(max9867->regmap)) {
|
|
ret = PTR_ERR(max9867->regmap);
|
|
dev_err(&i2c->dev,
|
|
"Failed to allocate regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
ret = regmap_read(max9867->regmap,
|
|
MAX9867_REVISION, ®);
|
|
if (ret < 0) {
|
|
dev_err(&i2c->dev, "Failed to read: %d\n", ret);
|
|
return ret;
|
|
}
|
|
dev_info(&i2c->dev, "device revision: %x\n", reg);
|
|
ret = snd_soc_register_codec(&i2c->dev, &max9867_codec,
|
|
max9867_dai, ARRAY_SIZE(max9867_dai));
|
|
if (ret < 0) {
|
|
dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
|
|
return ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int max9867_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id max9867_i2c_id[] = {
|
|
{ "max9867", 0 },
|
|
{ }
|
|
};
|
|
|
|
static const struct of_device_id max9867_of_match[] = {
|
|
{ .compatible = "maxim,max9867", },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);
|
|
|
|
static const struct dev_pm_ops max9867_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(max9867_suspend, max9867_resume)
|
|
};
|
|
|
|
static struct i2c_driver max9867_i2c_driver = {
|
|
.driver = {
|
|
.name = "max9867",
|
|
.of_match_table = of_match_ptr(max9867_of_match),
|
|
.pm = &max9867_pm_ops,
|
|
},
|
|
.probe = max9867_i2c_probe,
|
|
.remove = max9867_i2c_remove,
|
|
.id_table = max9867_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(max9867_i2c_driver);
|
|
|
|
MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC MAX9867 driver");
|
|
MODULE_LICENSE("GPL");
|