ASoC: cs4349: Add support for Cirrus Logic CS4349
Signed-off-by: Tim Howe <tim.howe@cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Tim Howe
401
sound/soc/codecs/cs4349.c
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401
sound/soc/codecs/cs4349.c
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/*
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* cs4349.c -- CS4349 ALSA Soc Audio driver
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*
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* Copyright 2015 Cirrus Logic, Inc.
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*
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* Authors: Tim Howe <Tim.Howe@cirrus.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/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 "cs4349.h"
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static const struct reg_default cs4349_reg_defaults[] = {
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{ 2, 0x00 }, /* r02 - Mode Control */
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{ 3, 0x09 }, /* r03 - Volume, Mixing and Inversion Control */
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{ 4, 0x81 }, /* r04 - Mute Control */
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{ 5, 0x00 }, /* r05 - Channel A Volume Control */
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{ 6, 0x00 }, /* r06 - Channel B Volume Control */
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{ 7, 0xB1 }, /* r07 - Ramp and Filter Control */
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{ 8, 0x1C }, /* r08 - Misc. Control */
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};
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/* Private data for the CS4349 */
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struct cs4349_private {
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struct regmap *regmap;
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struct cs4349_platform_data pdata;
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struct gpio_desc *reset_gpio;
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unsigned int mode;
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int rate;
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};
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static bool cs4349_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case CS4349_CHIPID:
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case CS4349_MODE:
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case CS4349_VMI:
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case CS4349_MUTE:
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case CS4349_VOLA:
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case CS4349_VOLB:
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case CS4349_RMPFLT:
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case CS4349_MISC:
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return true;
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default:
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return false;
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}
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}
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static int cs4349_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int format)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
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unsigned int fmt;
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fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
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switch (fmt) {
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case SND_SOC_DAIFMT_I2S:
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case SND_SOC_DAIFMT_LEFT_J:
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case SND_SOC_DAIFMT_RIGHT_J:
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cs4349->mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int cs4349_pcm_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_codec *codec = rtd->codec;
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struct cs4349_private *cs4349 = snd_soc_codec_get_drvdata(codec);
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int mode, fmt, ret;
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mode = snd_soc_read(codec, CS4349_MODE);
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cs4349->rate = params_rate(params);
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switch (cs4349->mode) {
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case SND_SOC_DAIFMT_I2S:
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mode |= MODE_FORMAT(DIF_I2S);
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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mode |= MODE_FORMAT(DIF_LEFT_JST);
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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switch (params_width(params)) {
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case 16:
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fmt = DIF_RGHT_JST16;
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break;
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case 24:
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fmt = DIF_RGHT_JST24;
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break;
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default:
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return -EINVAL;
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}
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mode |= MODE_FORMAT(fmt);
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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 = snd_soc_write(codec, CS4349_MODE, mode);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int cs4349_digital_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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int reg;
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reg = 0;
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if (mute)
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reg = MUTE_AB_MASK;
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return snd_soc_update_bits(codec, CS4349_MUTE, MUTE_AB_MASK, reg);
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}
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static DECLARE_TLV_DB_SCALE(dig_tlv, -12750, 50, 0);
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static const char * const chan_mix_texts[] = {
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"Mute", "MuteA", "MuteA SwapB", "MuteA MonoB", "SwapA MuteB",
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"BothR", "Swap", "SwapA MonoB", "MuteB", "Normal", "BothL",
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"MonoB", "MonoA MuteB", "MonoA", "MonoA SwapB", "Mono",
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/*Normal == Channel A = Left, Channel B = Right*/
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};
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static const char * const fm_texts[] = {
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"Auto", "Single", "Double", "Quad",
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};
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static const char * const deemph_texts[] = {
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"None", "44.1k", "48k", "32k",
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};
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static const char * const softr_zeroc_texts[] = {
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"Immediate", "Zero Cross", "Soft Ramp", "SR on ZC",
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};
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static int deemph_values[] = {
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0, 4, 8, 12,
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};
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static int softr_zeroc_values[] = {
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0, 64, 128, 192,
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};
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static const struct soc_enum chan_mix_enum =
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SOC_ENUM_SINGLE(CS4349_VMI, 0,
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ARRAY_SIZE(chan_mix_texts),
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chan_mix_texts);
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static const struct soc_enum fm_mode_enum =
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SOC_ENUM_SINGLE(CS4349_MODE, 0,
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ARRAY_SIZE(fm_texts),
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fm_texts);
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static SOC_VALUE_ENUM_SINGLE_DECL(deemph_enum, CS4349_MODE, 0, DEM_MASK,
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deemph_texts, deemph_values);
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static SOC_VALUE_ENUM_SINGLE_DECL(softr_zeroc_enum, CS4349_RMPFLT, 0,
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SR_ZC_MASK, softr_zeroc_texts,
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softr_zeroc_values);
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static const struct snd_kcontrol_new cs4349_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Master Playback Volume",
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CS4349_VOLA, CS4349_VOLB, 0, 0xFF, 1, dig_tlv),
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SOC_ENUM("Functional Mode", fm_mode_enum),
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SOC_ENUM("De-Emphasis Control", deemph_enum),
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SOC_ENUM("Soft Ramp Zero Cross Control", softr_zeroc_enum),
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SOC_ENUM("Channel Mixer", chan_mix_enum),
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SOC_SINGLE("VolA = VolB Switch", CS4349_VMI, 7, 1, 0),
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SOC_SINGLE("InvertA Switch", CS4349_VMI, 6, 1, 0),
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SOC_SINGLE("InvertB Switch", CS4349_VMI, 5, 1, 0),
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SOC_SINGLE("Auto-Mute Switch", CS4349_MUTE, 7, 1, 0),
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SOC_SINGLE("MUTEC A = B Switch", CS4349_MUTE, 5, 1, 0),
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SOC_SINGLE("Soft Ramp Up Switch", CS4349_RMPFLT, 5, 1, 0),
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SOC_SINGLE("Soft Ramp Down Switch", CS4349_RMPFLT, 4, 1, 0),
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SOC_SINGLE("Slow Roll Off Filter Switch", CS4349_RMPFLT, 2, 1, 0),
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SOC_SINGLE("Freeze Switch", CS4349_MISC, 5, 1, 0),
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SOC_SINGLE("Popguard Switch", CS4349_MISC, 4, 1, 0),
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};
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static const struct snd_soc_dapm_widget cs4349_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("HiFi DAC", NULL, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_OUTPUT("OutputA"),
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SND_SOC_DAPM_OUTPUT("OutputB"),
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};
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static const struct snd_soc_dapm_route cs4349_routes[] = {
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{"DAC Playback", NULL, "OutputA"},
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{"DAC Playback", NULL, "OutputB"},
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{"OutputA", NULL, "HiFi DAC"},
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{"OutputB", NULL, "HiFi DAC"},
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};
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#define CS4349_PCM_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
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SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
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SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE | \
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SNDRV_PCM_FMTBIT_S32_LE)
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#define CS4349_PCM_RATES SNDRV_PCM_RATE_8000_192000
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static const struct snd_soc_dai_ops cs4349_dai_ops = {
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.hw_params = cs4349_pcm_hw_params,
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.set_fmt = cs4349_set_dai_fmt,
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.digital_mute = cs4349_digital_mute,
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};
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static struct snd_soc_dai_driver cs4349_dai = {
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.name = "cs4349_hifi",
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.playback = {
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.stream_name = "DAC Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = CS4349_PCM_RATES,
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.formats = CS4349_PCM_FORMATS,
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},
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.ops = &cs4349_dai_ops,
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.symmetric_rates = 1,
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};
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static struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
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.controls = cs4349_snd_controls,
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.num_controls = ARRAY_SIZE(cs4349_snd_controls),
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.dapm_widgets = cs4349_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(cs4349_dapm_widgets),
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.dapm_routes = cs4349_routes,
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.num_dapm_routes = ARRAY_SIZE(cs4349_routes),
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};
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static struct regmap_config cs4349_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = CS4349_NUMREGS,
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.reg_defaults = cs4349_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(cs4349_reg_defaults),
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.readable_reg = cs4349_readable_register,
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.cache_type = REGCACHE_RBTREE,
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};
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static int cs4349_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct cs4349_private *cs4349;
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struct cs4349_platform_data *pdata = dev_get_platdata(&client->dev);
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int ret = 0;
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cs4349 = devm_kzalloc(&client->dev, sizeof(*cs4349), GFP_KERNEL);
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if (!cs4349)
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return -ENOMEM;
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cs4349->regmap = devm_regmap_init_i2c(client, &cs4349_regmap);
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if (IS_ERR(cs4349->regmap)) {
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ret = PTR_ERR(cs4349->regmap);
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dev_err(&client->dev, "regmap_init() failed: %d\n", ret);
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return ret;
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}
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if (pdata)
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cs4349->pdata = *pdata;
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/* Reset the Device */
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cs4349->reset_gpio = devm_gpiod_get_optional(&client->dev,
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"reset", GPIOD_OUT_LOW);
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if (IS_ERR(cs4349->reset_gpio))
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return PTR_ERR(cs4349->reset_gpio);
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if (cs4349->reset_gpio)
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gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
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i2c_set_clientdata(client, cs4349);
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return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4349,
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&cs4349_dai, 1);
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}
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static int cs4349_i2c_remove(struct i2c_client *client)
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{
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struct cs4349_private *cs4349 = i2c_get_clientdata(client);
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snd_soc_unregister_codec(&client->dev);
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/* Hold down reset */
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if (cs4349->reset_gpio)
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gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
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return 0;
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}
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#ifdef CONFIG_PM
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static int cs4349_runtime_suspend(struct device *dev)
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{
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struct cs4349_private *cs4349 = dev_get_drvdata(dev);
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struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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int ret;
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ret = snd_soc_update_bits(rtd->codec, CS4349_MISC, PWR_DWN, 1);
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if (ret < 0)
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return ret;
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regcache_cache_only(cs4349->regmap, true);
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/* Hold down reset */
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if (cs4349->reset_gpio)
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gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
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return 0;
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}
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static int cs4349_runtime_resume(struct device *dev)
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{
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struct cs4349_private *cs4349 = dev_get_drvdata(dev);
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struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
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int ret;
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ret = snd_soc_update_bits(rtd->codec, CS4349_MISC, PWR_DWN, 0);
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if (ret < 0)
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return ret;
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if (cs4349->reset_gpio)
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gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
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regcache_cache_only(cs4349->regmap, false);
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regcache_sync(cs4349->regmap);
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return 0;
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}
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#endif
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static const struct dev_pm_ops cs4349_runtime_pm = {
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SET_RUNTIME_PM_OPS(cs4349_runtime_suspend, cs4349_runtime_resume,
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NULL)
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};
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static const struct of_device_id cs4349_of_match[] = {
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{ .compatible = "cirrus,cs4349", },
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{},
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};
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MODULE_DEVICE_TABLE(of, cs4349_of_match);
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static const struct i2c_device_id cs4349_i2c_id[] = {
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{"cs4349", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, cs4349_i2c_id);
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static struct i2c_driver cs4349_i2c_driver = {
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.driver = {
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.name = "cs4349",
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.owner = THIS_MODULE,
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.of_match_table = cs4349_of_match,
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},
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.id_table = cs4349_i2c_id,
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.probe = cs4349_i2c_probe,
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.remove = cs4349_i2c_remove,
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};
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module_i2c_driver(cs4349_i2c_driver);
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MODULE_AUTHOR("Tim Howe <tim.howe@cirrus.com>");
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MODULE_DESCRIPTION("Cirrus Logic CS4349 ALSA SoC Codec Driver");
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MODULE_LICENSE("GPL");
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