ASoC: Add MAX9850 codec driver
This patch adds ASoC support for the MAX9850 codec with headphone amplifier. Supported features: - Playback - 16, 20 and 24 bit audio - 8k - 48k sample rates - DAPM Signed-off-by: Christian Glindkamp <christian.glindkamp@taskit.de> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Christian Glindkamp
Mark Brown
parent
3cbdd75331
commit
0e45cab644
@ -33,6 +33,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_JZ4740_CODEC if SOC_JZ4740
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select SND_SOC_LM4857 if I2C
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select SND_SOC_MAX98088 if I2C
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select SND_SOC_MAX9850 if I2C
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select SND_SOC_MAX9877 if I2C
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select SND_SOC_PCM3008
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select SND_SOC_SGTL5000 if I2C
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@ -186,6 +187,9 @@ config SND_SOC_DMIC
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config SND_SOC_MAX98088
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tristate
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config SND_SOC_MAX9850
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tristate
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config SND_SOC_PCM3008
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tristate
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@ -19,6 +19,7 @@ snd-soc-dfbmcs320-objs := dfbmcs320.o
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snd-soc-dmic-objs := dmic.o
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snd-soc-l3-objs := l3.o
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snd-soc-max98088-objs := max98088.o
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snd-soc-max9850-objs := max9850.o
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snd-soc-pcm3008-objs := pcm3008.o
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snd-soc-sgtl5000-objs := sgtl5000.o
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snd-soc-alc5623-objs := alc5623.o
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@ -107,6 +108,7 @@ obj-$(CONFIG_SND_SOC_DMIC) += snd-soc-dmic.o
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obj-$(CONFIG_SND_SOC_L3) += snd-soc-l3.o
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obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o
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obj-$(CONFIG_SND_SOC_MAX98088) += snd-soc-max98088.o
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obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o
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obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
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obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
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obj-$(CONFIG_SND_SOC_SN95031) +=snd-soc-sn95031.o
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389
sound/soc/codecs/max9850.c
Normal file
389
sound/soc/codecs/max9850.c
Normal file
@ -0,0 +1,389 @@
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/*
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* max9850.c -- codec driver for max9850
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*
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* Copyright (C) 2011 taskit GmbH
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*
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* Author: Christian Glindkamp <christian.glindkamp@taskit.de>
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*
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* Initial development of this code was funded by
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* MICRONIC Computer Systeme GmbH, http://www.mcsberlin.de/
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/slab.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/tlv.h>
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#include "max9850.h"
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struct max9850_priv {
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unsigned int sysclk;
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};
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/* max9850 register cache */
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static const u8 max9850_reg[MAX9850_CACHEREGNUM] = {
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0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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/* these registers are not used at the moment but provided for the sake of
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* completeness */
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static int max9850_volatile_register(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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switch (reg) {
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case MAX9850_STATUSA:
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case MAX9850_STATUSB:
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return 1;
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default:
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return 0;
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}
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}
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static const unsigned int max9850_tlv[] = {
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TLV_DB_RANGE_HEAD(4),
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0x18, 0x1f, TLV_DB_SCALE_ITEM(-7450, 400, 0),
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0x20, 0x33, TLV_DB_SCALE_ITEM(-4150, 200, 0),
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0x34, 0x37, TLV_DB_SCALE_ITEM(-150, 100, 0),
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0x38, 0x3f, TLV_DB_SCALE_ITEM(250, 50, 0),
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};
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static const struct snd_kcontrol_new max9850_controls[] = {
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SOC_SINGLE_TLV("Headphone Volume", MAX9850_VOLUME, 0, 0x3f, 1, max9850_tlv),
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SOC_SINGLE("Headphone Switch", MAX9850_VOLUME, 7, 1, 1),
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SOC_SINGLE("Mono Switch", MAX9850_GENERAL_PURPOSE, 2, 1, 0),
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};
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static const struct snd_kcontrol_new max9850_mixer_controls[] = {
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SOC_DAPM_SINGLE("Line In Switch", MAX9850_ENABLE, 1, 1, 0),
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};
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static const struct snd_soc_dapm_widget max9850_dapm_widgets[] = {
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SND_SOC_DAPM_SUPPLY("Charge Pump 1", MAX9850_ENABLE, 4, 0, NULL, 0),
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SND_SOC_DAPM_SUPPLY("Charge Pump 2", MAX9850_ENABLE, 5, 0, NULL, 0),
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SND_SOC_DAPM_SUPPLY("MCLK", MAX9850_ENABLE, 6, 0, NULL, 0),
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SND_SOC_DAPM_SUPPLY("SHDN", MAX9850_ENABLE, 7, 0, NULL, 0),
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SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", MAX9850_ENABLE, 2, 0,
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&max9850_mixer_controls[0],
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ARRAY_SIZE(max9850_mixer_controls)),
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SND_SOC_DAPM_PGA("Headphone Output", MAX9850_ENABLE, 3, 0, NULL, 0),
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", MAX9850_ENABLE, 0, 0),
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SND_SOC_DAPM_OUTPUT("OUTL"),
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SND_SOC_DAPM_OUTPUT("HPL"),
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SND_SOC_DAPM_OUTPUT("OUTR"),
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SND_SOC_DAPM_OUTPUT("HPR"),
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SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
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SND_SOC_DAPM_INPUT("INL"),
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SND_SOC_DAPM_INPUT("INR"),
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};
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static const struct snd_soc_dapm_route intercon[] = {
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/* output mixer */
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{"Output Mixer", NULL, "DAC"},
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{"Output Mixer", "Line In Switch", "Line Input"},
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/* outputs */
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{"Headphone Output", NULL, "Output Mixer"},
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{"HPL", NULL, "Headphone Output"},
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{"HPR", NULL, "Headphone Output"},
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{"OUTL", NULL, "Output Mixer"},
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{"OUTR", NULL, "Output Mixer"},
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/* inputs */
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{"Line Input", NULL, "INL"},
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{"Line Input", NULL, "INR"},
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/* supplies */
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{"Output Mixer", NULL, "Charge Pump 1"},
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{"Output Mixer", NULL, "Charge Pump 2"},
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{"Output Mixer", NULL, "SHDN"},
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{"DAC", NULL, "MCLK"},
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};
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static int max9850_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_codec *codec = dai->codec;
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struct max9850_priv *max9850 = snd_soc_codec_get_drvdata(codec);
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u64 lrclk_div;
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u8 sf, da;
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if(!max9850->sysclk)
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return -EINVAL;
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/* lrclk_div = 2^22 * rate / iclk with iclk = mclk / sf */
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sf = (snd_soc_read(codec, MAX9850_CLOCK) >> 2) + 1;
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lrclk_div = (1 << 22);
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lrclk_div *= params_rate(params);
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lrclk_div *= sf;
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do_div(lrclk_div, max9850->sysclk);
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snd_soc_write(codec, MAX9850_LRCLK_MSB, (lrclk_div >> 8) & 0x7f);
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snd_soc_write(codec, MAX9850_LRCLK_LSB, lrclk_div & 0xff);
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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da = 0;
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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da = 0x2;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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da = 0x3;
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break;
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default:
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return -EINVAL;
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}
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snd_soc_update_bits(codec, MAX9850_DIGITAL_AUDIO, 0x3, da);
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return 0;
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}
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static int max9850_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 max9850_priv *max9850 = snd_soc_codec_get_drvdata(codec);
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/* calculate mclk -> iclk divider */
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if (freq <= 13000000)
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snd_soc_write(codec, MAX9850_CLOCK, 0x0);
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else if (freq <= 26000000)
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snd_soc_write(codec, MAX9850_CLOCK, 0x4);
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else if (freq <= 40000000)
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snd_soc_write(codec, MAX9850_CLOCK, 0x8);
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else
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return -EINVAL;
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max9850->sysclk = freq;
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return 0;
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}
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static int max9850_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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u8 da = 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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da |= MAX9850_MASTER;
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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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da |= MAX9850_DLY;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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da |= MAX9850_RTJ;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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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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da |= MAX9850_BCINV | MAX9850_INV;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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da |= MAX9850_BCINV;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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da |= MAX9850_INV;
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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 da */
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snd_soc_write(codec, MAX9850_DIGITAL_AUDIO, da);
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return 0;
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}
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static int max9850_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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int ret;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
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ret = snd_soc_cache_sync(codec);
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if (ret) {
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dev_err(codec->dev,
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"Failed to sync cache: %d\n", ret);
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return ret;
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}
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}
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break;
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case SND_SOC_BIAS_OFF:
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break;
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}
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codec->dapm.bias_level = level;
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return 0;
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}
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#define MAX9850_RATES SNDRV_PCM_RATE_8000_48000
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#define MAX9850_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
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SNDRV_PCM_FMTBIT_S24_LE)
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static struct snd_soc_dai_ops max9850_dai_ops = {
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.hw_params = max9850_hw_params,
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.set_sysclk = max9850_set_dai_sysclk,
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.set_fmt = max9850_set_dai_fmt,
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};
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static struct snd_soc_dai_driver max9850_dai = {
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.name = "max9850-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = MAX9850_RATES,
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.formats = MAX9850_FORMATS
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},
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.ops = &max9850_dai_ops,
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};
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#ifdef CONFIG_PM
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static int max9850_suspend(struct snd_soc_codec *codec, pm_message_t state)
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{
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max9850_set_bias_level(codec, SND_SOC_BIAS_OFF);
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return 0;
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}
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static int max9850_resume(struct snd_soc_codec *codec)
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{
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max9850_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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return 0;
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}
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#else
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#define max9850_suspend NULL
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#define max9850_resume NULL
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#endif
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static int max9850_probe(struct snd_soc_codec *codec)
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{
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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int ret;
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ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
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return ret;
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}
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/* enable zero-detect */
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snd_soc_update_bits(codec, MAX9850_GENERAL_PURPOSE, 1, 1);
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/* enable slew-rate control */
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snd_soc_update_bits(codec, MAX9850_VOLUME, 0x40, 0x40);
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/* set slew-rate 125ms */
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snd_soc_update_bits(codec, MAX9850_CHARGE_PUMP, 0xff, 0xc0);
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snd_soc_dapm_new_controls(dapm, max9850_dapm_widgets,
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ARRAY_SIZE(max9850_dapm_widgets));
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snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
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snd_soc_add_controls(codec, max9850_controls,
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ARRAY_SIZE(max9850_controls));
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return 0;
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}
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static struct snd_soc_codec_driver soc_codec_dev_max9850 = {
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.probe = max9850_probe,
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.suspend = max9850_suspend,
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.resume = max9850_resume,
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.set_bias_level = max9850_set_bias_level,
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.reg_cache_size = ARRAY_SIZE(max9850_reg),
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.reg_word_size = sizeof(u8),
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.reg_cache_default = max9850_reg,
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.volatile_register = max9850_volatile_register,
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};
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static int __devinit max9850_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct max9850_priv *max9850;
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int ret;
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max9850 = kzalloc(sizeof(struct max9850_priv), GFP_KERNEL);
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if (max9850 == NULL)
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return -ENOMEM;
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i2c_set_clientdata(i2c, max9850);
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ret = snd_soc_register_codec(&i2c->dev,
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&soc_codec_dev_max9850, &max9850_dai, 1);
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if (ret < 0)
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kfree(max9850);
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return ret;
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}
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static __devexit int max9850_i2c_remove(struct i2c_client *client)
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{
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snd_soc_unregister_codec(&client->dev);
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kfree(i2c_get_clientdata(client));
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return 0;
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}
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static const struct i2c_device_id max9850_i2c_id[] = {
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{ "max9850", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max9850_i2c_id);
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static struct i2c_driver max9850_i2c_driver = {
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.driver = {
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.name = "max9850",
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.owner = THIS_MODULE,
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},
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.probe = max9850_i2c_probe,
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.remove = __devexit_p(max9850_i2c_remove),
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.id_table = max9850_i2c_id,
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};
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static int __init max9850_init(void)
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{
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return i2c_add_driver(&max9850_i2c_driver);
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}
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module_init(max9850_init);
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static void __exit max9850_exit(void)
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{
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i2c_del_driver(&max9850_i2c_driver);
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}
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module_exit(max9850_exit);
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MODULE_AUTHOR("Christian Glindkamp <christian.glindkamp@taskit.de>");
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MODULE_DESCRIPTION("ASoC MAX9850 codec driver");
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MODULE_LICENSE("GPL");
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38
sound/soc/codecs/max9850.h
Normal file
38
sound/soc/codecs/max9850.h
Normal file
@ -0,0 +1,38 @@
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/*
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* max9850.h -- codec driver for max9850
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*
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* Copyright (C) 2011 taskit GmbH
|
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* Author: Christian Glindkamp <christian.glindkamp@taskit.de>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _MAX9850_H
|
||||
#define _MAX9850_H
|
||||
|
||||
#define MAX9850_STATUSA 0x00
|
||||
#define MAX9850_STATUSB 0x01
|
||||
#define MAX9850_VOLUME 0x02
|
||||
#define MAX9850_GENERAL_PURPOSE 0x03
|
||||
#define MAX9850_INTERRUPT 0x04
|
||||
#define MAX9850_ENABLE 0x05
|
||||
#define MAX9850_CLOCK 0x06
|
||||
#define MAX9850_CHARGE_PUMP 0x07
|
||||
#define MAX9850_LRCLK_MSB 0x08
|
||||
#define MAX9850_LRCLK_LSB 0x09
|
||||
#define MAX9850_DIGITAL_AUDIO 0x0a
|
||||
|
||||
#define MAX9850_CACHEREGNUM 11
|
||||
|
||||
/* MAX9850_DIGITAL_AUDIO */
|
||||
#define MAX9850_MASTER (1<<7)
|
||||
#define MAX9850_INV (1<<6)
|
||||
#define MAX9850_BCINV (1<<5)
|
||||
#define MAX9850_DLY (1<<3)
|
||||
#define MAX9850_RTJ (1<<2)
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user