Merge remote-tracking branch 'asoc/topic/pcm1681' into asoc-new-pcm
Trivial add/add conflicts: sound/soc/codecs/Kconfig sound/soc/codecs/Makefile
This commit is contained in:
Mark Brown
commit
6c3137fd01
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@ -0,0 +1,15 @@
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Texas Instruments PCM1681 8-channel PWM Processor
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Required properties:
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- compatible: Should contain "ti,pcm1681".
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- reg: The i2c address. Should contain <0x4c>.
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Examples:
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i2c_bus {
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pcm1681@4c {
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compatible = "ti,pcm1681";
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reg = <0x4c>;
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};
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};
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@ -54,6 +54,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_MC13783 if MFD_MC13XXX
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select SND_SOC_ML26124 if I2C
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select SND_SOC_HDMI_CODEC
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select SND_SOC_PCM1681 if I2C
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select SND_SOC_PCM1792A if SPI_MASTER
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select SND_SOC_PCM3008
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select SND_SOC_RT5631 if I2C
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@ -293,6 +294,9 @@ config SND_SOC_MAX9850
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config SND_SOC_HDMI_CODEC
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tristate
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config SND_SOC_PCM1681
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tristate
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config SND_SOC_PCM1792A
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tristate
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@ -42,6 +42,7 @@ snd-soc-max9850-objs := max9850.o
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snd-soc-mc13783-objs := mc13783.o
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snd-soc-ml26124-objs := ml26124.o
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snd-soc-hdmi-codec-objs := hdmi.o
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snd-soc-pcm1681-objs := pcm1681.o
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snd-soc-pcm1792a-codec-objs := pcm1792a.o
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snd-soc-pcm3008-objs := pcm3008.o
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snd-soc-rt5631-objs := rt5631.o
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@ -172,6 +173,7 @@ obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o
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obj-$(CONFIG_SND_SOC_MC13783) += snd-soc-mc13783.o
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obj-$(CONFIG_SND_SOC_ML26124) += snd-soc-ml26124.o
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obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o
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obj-$(CONFIG_SND_SOC_PCM1681) += snd-soc-pcm1681.o
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obj-$(CONFIG_SND_SOC_PCM1792A) += snd-soc-pcm1792a-codec.o
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obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
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obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
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@ -0,0 +1,313 @@
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/*
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* PCM1681 ASoC codec driver
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*
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* Copyright (c) StreamUnlimited GmbH 2013
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* Marek Belisko <marek.belisko@streamunlimited.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.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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#define PCM1681_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S24_LE)
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#define PCM1681_PCM_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | \
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SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
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SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)
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#define PCM1681_SOFT_MUTE_ALL 0xff
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#define PCM1681_DEEMPH_RATE_MASK 0x18
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#define PCM1681_DEEMPH_MASK 0x01
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#define PCM1681_ATT_CONTROL(X) (X <= 6 ? X : X + 9) /* Attenuation level */
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#define PCM1681_SOFT_MUTE 0x07 /* Soft mute control register */
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#define PCM1681_DAC_CONTROL 0x08 /* DAC operation control */
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#define PCM1681_FMT_CONTROL 0x09 /* Audio interface data format */
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#define PCM1681_DEEMPH_CONTROL 0x0a /* De-emphasis control */
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#define PCM1681_ZERO_DETECT_STATUS 0x0e /* Zero detect status reg */
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static const struct reg_default pcm1681_reg_defaults[] = {
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{ 0x01, 0xff },
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{ 0x02, 0xff },
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{ 0x03, 0xff },
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{ 0x04, 0xff },
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{ 0x05, 0xff },
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{ 0x06, 0xff },
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{ 0x07, 0x00 },
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{ 0x08, 0x00 },
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{ 0x09, 0x06 },
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{ 0x0A, 0x00 },
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{ 0x0B, 0xff },
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{ 0x0C, 0x0f },
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{ 0x0D, 0x00 },
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{ 0x10, 0xff },
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{ 0x11, 0xff },
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{ 0x12, 0x00 },
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{ 0x13, 0x00 },
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};
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static bool pcm1681_accessible_reg(struct device *dev, unsigned int reg)
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{
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return !((reg == 0x00) || (reg == 0x0f));
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}
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static bool pcm1681_writeable_reg(struct device *dev, unsigned register reg)
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{
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return pcm1681_accessible_reg(dev, reg) &&
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(reg != PCM1681_ZERO_DETECT_STATUS);
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}
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struct pcm1681_private {
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struct regmap *regmap;
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unsigned int format;
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/* Current deemphasis status */
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unsigned int deemph;
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/* Current rate for deemphasis control */
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unsigned int rate;
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};
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static const int pcm1681_deemph[] = { 44100, 48000, 32000 };
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static int pcm1681_set_deemph(struct snd_soc_codec *codec)
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{
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struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
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int i = 0, val = -1, enable = 0;
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if (priv->deemph)
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for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++)
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if (pcm1681_deemph[i] == priv->rate)
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val = i;
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if (val != -1) {
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regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
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PCM1681_DEEMPH_RATE_MASK, val);
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enable = 1;
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} else
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enable = 0;
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/* enable/disable deemphasis functionality */
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return regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
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PCM1681_DEEMPH_MASK, enable);
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}
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static int pcm1681_get_deemph(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
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ucontrol->value.enumerated.item[0] = priv->deemph;
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return 0;
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}
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static int pcm1681_put_deemph(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
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priv->deemph = ucontrol->value.enumerated.item[0];
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return pcm1681_set_deemph(codec);
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}
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static int pcm1681_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 pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
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/* The PCM1681 can only be slave to all clocks */
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if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
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dev_err(codec->dev, "Invalid clocking mode\n");
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return -EINVAL;
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}
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priv->format = format;
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return 0;
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}
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static int pcm1681_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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struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
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int val;
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if (mute)
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val = PCM1681_SOFT_MUTE_ALL;
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else
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val = 0;
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return regmap_write(priv->regmap, PCM1681_SOFT_MUTE, val);
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}
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static int pcm1681_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 pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
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int val = 0, ret;
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int pcm_format = params_format(params);
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priv->rate = params_rate(params);
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switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_RIGHT_J:
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if (pcm_format == SNDRV_PCM_FORMAT_S24_LE)
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val = 0x00;
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else if (pcm_format == SNDRV_PCM_FORMAT_S16_LE)
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val = 0x03;
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break;
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case SND_SOC_DAIFMT_I2S:
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val = 0x04;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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val = 0x05;
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break;
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default:
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dev_err(codec->dev, "Invalid DAI format\n");
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return -EINVAL;
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}
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ret = regmap_update_bits(priv->regmap, PCM1681_FMT_CONTROL, 0x0f, val);
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if (ret < 0)
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return ret;
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return pcm1681_set_deemph(codec);
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}
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static const struct snd_soc_dai_ops pcm1681_dai_ops = {
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.set_fmt = pcm1681_set_dai_fmt,
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.hw_params = pcm1681_hw_params,
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.digital_mute = pcm1681_digital_mute,
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};
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static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1);
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static const struct snd_kcontrol_new pcm1681_controls[] = {
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SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
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PCM1681_ATT_CONTROL(1), PCM1681_ATT_CONTROL(2), 0,
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0x7f, 0, pcm1681_dac_tlv),
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SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
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PCM1681_ATT_CONTROL(3), PCM1681_ATT_CONTROL(4), 0,
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0x7f, 0, pcm1681_dac_tlv),
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SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
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PCM1681_ATT_CONTROL(5), PCM1681_ATT_CONTROL(6), 0,
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0x7f, 0, pcm1681_dac_tlv),
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SOC_DOUBLE_R_TLV("Channel 7/8 Playback Volume",
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PCM1681_ATT_CONTROL(7), PCM1681_ATT_CONTROL(8), 0,
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0x7f, 0, pcm1681_dac_tlv),
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SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
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pcm1681_get_deemph, pcm1681_put_deemph),
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};
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struct snd_soc_dai_driver pcm1681_dai = {
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.name = "pcm1681-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 8,
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.rates = PCM1681_PCM_RATES,
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.formats = PCM1681_PCM_FORMATS,
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},
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.ops = &pcm1681_dai_ops,
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};
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#ifdef CONFIG_OF
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static const struct of_device_id pcm1681_dt_ids[] = {
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{ .compatible = "ti,pcm1681", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, pcm1681_dt_ids);
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#endif
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static const struct regmap_config pcm1681_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = ARRAY_SIZE(pcm1681_reg_defaults) + 1,
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.reg_defaults = pcm1681_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(pcm1681_reg_defaults),
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.writeable_reg = pcm1681_writeable_reg,
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.readable_reg = pcm1681_accessible_reg,
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};
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static struct snd_soc_codec_driver soc_codec_dev_pcm1681 = {
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.controls = pcm1681_controls,
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.num_controls = ARRAY_SIZE(pcm1681_controls),
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};
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static const struct i2c_device_id pcm1681_i2c_id[] = {
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{"pcm1681", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, pcm1681_i2c_id);
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static int pcm1681_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int ret;
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struct pcm1681_private *priv;
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priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->regmap = devm_regmap_init_i2c(client, &pcm1681_regmap);
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if (IS_ERR(priv->regmap)) {
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ret = PTR_ERR(priv->regmap);
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dev_err(&client->dev, "Failed to create regmap: %d\n", ret);
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return ret;
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}
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i2c_set_clientdata(client, priv);
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return snd_soc_register_codec(&client->dev, &soc_codec_dev_pcm1681,
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&pcm1681_dai, 1);
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}
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static int pcm1681_i2c_remove(struct i2c_client *client)
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{
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snd_soc_unregister_codec(&client->dev);
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return 0;
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}
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static struct i2c_driver pcm1681_i2c_driver = {
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.driver = {
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.name = "pcm1681",
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.owner = THIS_MODULE,
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.of_match_table = of_match_ptr(pcm1681_dt_ids),
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},
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.id_table = pcm1681_i2c_id,
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.probe = pcm1681_i2c_probe,
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.remove = pcm1681_i2c_remove,
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};
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module_i2c_driver(pcm1681_i2c_driver);
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MODULE_DESCRIPTION("Texas Instruments PCM1681 ALSA SoC Codec Driver");
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MODULE_AUTHOR("Marek Belisko <marek.belisko@streamunlimited.com>");
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MODULE_LICENSE("GPL");
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