linux-stable/sound/soc/codecs/pcm179x.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  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 this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  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 [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  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 [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

231 lines
5.6 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PCM179X ASoC codec driver
*
* Copyright (c) Amarula Solutions B.V. 2013
*
* Michael Trimarchi <michael@amarulasolutions.com>
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/of.h>
#include "pcm179x.h"
#define PCM179X_DAC_VOL_LEFT 0x10
#define PCM179X_DAC_VOL_RIGHT 0x11
#define PCM179X_FMT_CONTROL 0x12
#define PCM179X_MODE_CONTROL 0x13
#define PCM179X_SOFT_MUTE PCM179X_FMT_CONTROL
#define PCM179X_FMT_MASK 0x70
#define PCM179X_FMT_SHIFT 4
#define PCM179X_MUTE_MASK 0x01
#define PCM179X_MUTE_SHIFT 0
#define PCM179X_ATLD_ENABLE (1 << 7)
static const struct reg_default pcm179x_reg_defaults[] = {
{ 0x10, 0xff },
{ 0x11, 0xff },
{ 0x12, 0x50 },
{ 0x13, 0x00 },
{ 0x14, 0x00 },
{ 0x15, 0x01 },
{ 0x16, 0x00 },
{ 0x17, 0x00 },
};
static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg)
{
return reg >= 0x10 && reg <= 0x17;
}
static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg)
{
bool accessible;
accessible = pcm179x_accessible_reg(dev, reg);
return accessible && reg != 0x16 && reg != 0x17;
}
struct pcm179x_private {
struct regmap *regmap;
unsigned int format;
unsigned int rate;
};
static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int format)
{
struct snd_soc_component *component = codec_dai->component;
struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
priv->format = format;
return 0;
}
static int pcm179x_digital_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_component *component = dai->component;
struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
int ret;
ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE,
PCM179X_MUTE_MASK, !!mute);
if (ret < 0)
return ret;
return 0;
}
static int pcm179x_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
int val = 0, ret;
priv->rate = params_rate(params);
switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_RIGHT_J:
switch (params_width(params)) {
case 24:
case 32:
val = 2;
break;
case 16:
val = 0;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
switch (params_width(params)) {
case 24:
case 32:
val = 5;
break;
case 16:
val = 4;
break;
default:
return -EINVAL;
}
break;
default:
dev_err(component->dev, "Invalid DAI format\n");
return -EINVAL;
}
val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE;
ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL,
PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val);
if (ret < 0)
return ret;
return 0;
}
static const struct snd_soc_dai_ops pcm179x_dai_ops = {
.set_fmt = pcm179x_set_dai_fmt,
.hw_params = pcm179x_hw_params,
.digital_mute = pcm179x_digital_mute,
};
static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1);
static const struct snd_kcontrol_new pcm179x_controls[] = {
SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT,
PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0,
pcm179x_dac_tlv),
SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0),
SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0),
};
static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("IOUTL+"),
SND_SOC_DAPM_OUTPUT("IOUTL-"),
SND_SOC_DAPM_OUTPUT("IOUTR+"),
SND_SOC_DAPM_OUTPUT("IOUTR-"),
};
static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = {
{ "IOUTL+", NULL, "Playback" },
{ "IOUTL-", NULL, "Playback" },
{ "IOUTR+", NULL, "Playback" },
{ "IOUTR-", NULL, "Playback" },
};
static struct snd_soc_dai_driver pcm179x_dai = {
.name = "pcm179x-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 10000,
.rate_max = 200000,
.formats = PCM1792A_FORMATS, },
.ops = &pcm179x_dai_ops,
};
const struct regmap_config pcm179x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 23,
.reg_defaults = pcm179x_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults),
.writeable_reg = pcm179x_writeable_reg,
.readable_reg = pcm179x_accessible_reg,
};
EXPORT_SYMBOL_GPL(pcm179x_regmap_config);
static const struct snd_soc_component_driver soc_component_dev_pcm179x = {
.controls = pcm179x_controls,
.num_controls = ARRAY_SIZE(pcm179x_controls),
.dapm_widgets = pcm179x_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets),
.dapm_routes = pcm179x_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
int pcm179x_common_init(struct device *dev, struct regmap *regmap)
{
struct pcm179x_private *pcm179x;
pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private),
GFP_KERNEL);
if (!pcm179x)
return -ENOMEM;
pcm179x->regmap = regmap;
dev_set_drvdata(dev, pcm179x);
return devm_snd_soc_register_component(dev,
&soc_component_dev_pcm179x, &pcm179x_dai, 1);
}
EXPORT_SYMBOL_GPL(pcm179x_common_init);
MODULE_DESCRIPTION("ASoC PCM179X driver");
MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
MODULE_LICENSE("GPL");