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linux-next/sound/soc/codecs/uda134x.c
Bhumika Goyal a180ba45b1 ASoC: codecs: add const to snd_soc_codec_driver structures 
Declare snd_soc_codec_driver structures as const as they are only passed
as an argument to the function snd_soc_register_codec. This argument is
of type const, so declare the structures with this property as const.
In file codecs/sn95031.c, snd_soc_codec_driver structure is also used in
a copy operation along with getting passed to snd_soc_register_codec.
So, it can be made const too.
Done using Coccinelle:

@match disable optional_qualifier@
identifier s;
position p;
@@
static struct snd_soc_codec_driver s@p={...};

@good1@
identifier match.s;
position p;
@@
snd_soc_register_codec(...,&s@p,...)

@bad@
identifier match.s;
position p!={match.p,good1.p};
@@
s@p

@depends on !bad disable optional_qualifier@
identifier match.s;
@@
static
+const
struct snd_soc_codec_driver s={...};

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-08-10 16:10:50 +01:00

597 lines
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/*
* uda134x.c -- UDA134X ALSA SoC Codec driver
*
* Modifications by Christian Pellegrin <chripell@evolware.org>
*
* Copyright 2007 Dension Audio Systems Ltd.
* Author: Zoltan Devai
*
* Based on the WM87xx drivers by Liam Girdwood and Richard Purdie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/uda134x.h>
#include <sound/l3.h>
#include "uda134x.h"
#define UDA134X_RATES SNDRV_PCM_RATE_8000_48000
#define UDA134X_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S20_3LE)
struct uda134x_priv {
int sysclk;
int dai_fmt;
struct snd_pcm_substream *master_substream;
struct snd_pcm_substream *slave_substream;
struct regmap *regmap;
struct uda134x_platform_data *pd;
};
static const struct reg_default uda134x_reg_defaults[] = {
{ UDA134X_EA000, 0x04 },
{ UDA134X_EA001, 0x04 },
{ UDA134X_EA010, 0x04 },
{ UDA134X_EA011, 0x00 },
{ UDA134X_EA100, 0x00 },
{ UDA134X_EA101, 0x00 },
{ UDA134X_EA110, 0x00 },
{ UDA134X_EA111, 0x00 },
{ UDA134X_STATUS0, 0x00 },
{ UDA134X_STATUS1, 0x03 },
{ UDA134X_DATA000, 0x00 },
{ UDA134X_DATA001, 0x00 },
{ UDA134X_DATA010, 0x00 },
{ UDA134X_DATA011, 0x00 },
{ UDA134X_DATA1, 0x00 },
};
/*
* Write to the uda134x registers
*
*/
static int uda134x_regmap_write(void *context, unsigned int reg,
unsigned int value)
{
struct uda134x_platform_data *pd = context;
int ret;
u8 addr;
u8 data = value;
switch (reg) {
case UDA134X_STATUS0:
case UDA134X_STATUS1:
addr = UDA134X_STATUS_ADDR;
data |= (reg - UDA134X_STATUS0) << 7;
break;
case UDA134X_DATA000:
case UDA134X_DATA001:
case UDA134X_DATA010:
case UDA134X_DATA011:
addr = UDA134X_DATA0_ADDR;
data |= (reg - UDA134X_DATA000) << 6;
break;
case UDA134X_DATA1:
addr = UDA134X_DATA1_ADDR;
break;
default:
/* It's an extended address register */
addr = (reg | UDA134X_EXTADDR_PREFIX);
ret = l3_write(&pd->l3,
UDA134X_DATA0_ADDR, &addr, 1);
if (ret != 1)
return -EIO;
addr = UDA134X_DATA0_ADDR;
data = (value | UDA134X_EXTDATA_PREFIX);
break;
}
ret = l3_write(&pd->l3,
addr, &data, 1);
if (ret != 1)
return -EIO;
return 0;
}
static inline void uda134x_reset(struct snd_soc_codec *codec)
{
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
unsigned int mask = 1<<6;
regmap_update_bits(uda134x->regmap, UDA134X_STATUS0, mask, mask);
msleep(1);
regmap_update_bits(uda134x->regmap, UDA134X_STATUS0, mask, 0);
}
static int uda134x_mute(struct snd_soc_dai *dai, int mute)
{
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(dai->codec);
unsigned int mask = 1<<2;
unsigned int val;
pr_debug("%s mute: %d\n", __func__, mute);
if (mute)
val = mask;
else
val = 0;
return regmap_update_bits(uda134x->regmap, UDA134X_DATA010, mask, val);
}
static int uda134x_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
struct snd_pcm_runtime *master_runtime;
if (uda134x->master_substream) {
master_runtime = uda134x->master_substream->runtime;
pr_debug("%s constraining to %d bits at %d\n", __func__,
master_runtime->sample_bits,
master_runtime->rate);
snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE,
master_runtime->rate);
snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
master_runtime->sample_bits);
uda134x->slave_substream = substream;
} else
uda134x->master_substream = substream;
return 0;
}
static void uda134x_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
if (uda134x->master_substream == substream)
uda134x->master_substream = uda134x->slave_substream;
uda134x->slave_substream = NULL;
}
static int uda134x_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
unsigned int hw_params = 0;
if (substream == uda134x->slave_substream) {
pr_debug("%s ignoring hw_params for slave substream\n",
__func__);
return 0;
}
pr_debug("%s sysclk: %d, rate:%d\n", __func__,
uda134x->sysclk, params_rate(params));
/* set SYSCLK / fs ratio */
switch (uda134x->sysclk / params_rate(params)) {
case 512:
break;
case 384:
hw_params |= (1<<4);
break;
case 256:
hw_params |= (1<<5);
break;
default:
printk(KERN_ERR "%s unsupported fs\n", __func__);
return -EINVAL;
}
pr_debug("%s dai_fmt: %d, params_format:%d\n", __func__,
uda134x->dai_fmt, params_format(params));
/* set DAI format and word length */
switch (uda134x->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
break;
case SND_SOC_DAIFMT_RIGHT_J:
switch (params_width(params)) {
case 16:
hw_params |= (1<<1);
break;
case 18:
hw_params |= (1<<2);
break;
case 20:
hw_params |= ((1<<2) | (1<<1));
break;
default:
printk(KERN_ERR "%s unsupported format (right)\n",
__func__);
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_LEFT_J:
hw_params |= (1<<3);
break;
default:
printk(KERN_ERR "%s unsupported format\n", __func__);
return -EINVAL;
}
return regmap_update_bits(uda134x->regmap, UDA134X_STATUS0,
STATUS0_SYSCLK_MASK | STATUS0_DAIFMT_MASK, hw_params);
}
static int uda134x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
pr_debug("%s clk_id: %d, freq: %u, dir: %d\n", __func__,
clk_id, freq, dir);
/* Anything between 256fs*8Khz and 512fs*48Khz should be acceptable
because the codec is slave. Of course limitations of the clock
master (the IIS controller) apply.
We'll error out on set_hw_params if it's not OK */
if ((freq >= (256 * 8000)) && (freq <= (512 * 48000))) {
uda134x->sysclk = freq;
return 0;
}
printk(KERN_ERR "%s unsupported sysclk\n", __func__);
return -EINVAL;
}
static int uda134x_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
pr_debug("%s fmt: %08X\n", __func__, fmt);
/* codec supports only full slave mode */
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
printk(KERN_ERR "%s unsupported slave mode\n", __func__);
return -EINVAL;
}
/* no support for clock inversion */
if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) {
printk(KERN_ERR "%s unsupported clock inversion\n", __func__);
return -EINVAL;
}
/* We can't setup DAI format here as it depends on the word bit num */
/* so let's just store the value for later */
uda134x->dai_fmt = fmt;
return 0;
}
static int uda134x_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
struct uda134x_platform_data *pd = uda134x->pd;
pr_debug("%s bias level %d\n", __func__, level);
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
/* power on */
if (pd->power) {
pd->power(1);
regcache_sync(uda134x->regmap);
}
break;
case SND_SOC_BIAS_STANDBY:
break;
case SND_SOC_BIAS_OFF:
/* power off */
if (pd->power) {
pd->power(0);
regcache_mark_dirty(uda134x->regmap);
}
break;
}
return 0;
}
static const char *uda134x_dsp_setting[] = {"Flat", "Minimum1",
"Minimum2", "Maximum"};
static const char *uda134x_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
static const char *uda134x_mixmode[] = {"Differential", "Analog1",
"Analog2", "Both"};
static const struct soc_enum uda134x_mixer_enum[] = {
SOC_ENUM_SINGLE(UDA134X_DATA010, 0, 0x04, uda134x_dsp_setting),
SOC_ENUM_SINGLE(UDA134X_DATA010, 3, 0x04, uda134x_deemph),
SOC_ENUM_SINGLE(UDA134X_EA010, 0, 0x04, uda134x_mixmode),
};
static const struct snd_kcontrol_new uda1341_snd_controls[] = {
SOC_SINGLE("Master Playback Volume", UDA134X_DATA000, 0, 0x3F, 1),
SOC_SINGLE("Capture Volume", UDA134X_EA010, 2, 0x07, 0),
SOC_SINGLE("Analog1 Volume", UDA134X_EA000, 0, 0x1F, 1),
SOC_SINGLE("Analog2 Volume", UDA134X_EA001, 0, 0x1F, 1),
SOC_SINGLE("Mic Sensitivity", UDA134X_EA010, 2, 7, 0),
SOC_SINGLE("Mic Volume", UDA134X_EA101, 0, 0x1F, 0),
SOC_SINGLE("Tone Control - Bass", UDA134X_DATA001, 2, 0xF, 0),
SOC_SINGLE("Tone Control - Treble", UDA134X_DATA001, 0, 3, 0),
SOC_ENUM("Sound Processing Filter", uda134x_mixer_enum[0]),
SOC_ENUM("PCM Playback De-emphasis", uda134x_mixer_enum[1]),
SOC_ENUM("Input Mux", uda134x_mixer_enum[2]),
SOC_SINGLE("AGC Switch", UDA134X_EA100, 4, 1, 0),
SOC_SINGLE("AGC Target Volume", UDA134X_EA110, 0, 0x03, 1),
SOC_SINGLE("AGC Timing", UDA134X_EA110, 2, 0x07, 0),
SOC_SINGLE("DAC +6dB Switch", UDA134X_STATUS1, 6, 1, 0),
SOC_SINGLE("ADC +6dB Switch", UDA134X_STATUS1, 5, 1, 0),
SOC_SINGLE("ADC Polarity Switch", UDA134X_STATUS1, 4, 1, 0),
SOC_SINGLE("DAC Polarity Switch", UDA134X_STATUS1, 3, 1, 0),
SOC_SINGLE("Double Speed Playback Switch", UDA134X_STATUS1, 2, 1, 0),
SOC_SINGLE("DC Filter Enable Switch", UDA134X_STATUS0, 0, 1, 0),
};
static const struct snd_kcontrol_new uda1340_snd_controls[] = {
SOC_SINGLE("Master Playback Volume", UDA134X_DATA000, 0, 0x3F, 1),
SOC_SINGLE("Tone Control - Bass", UDA134X_DATA001, 2, 0xF, 0),
SOC_SINGLE("Tone Control - Treble", UDA134X_DATA001, 0, 3, 0),
SOC_ENUM("Sound Processing Filter", uda134x_mixer_enum[0]),
SOC_ENUM("PCM Playback De-emphasis", uda134x_mixer_enum[1]),
SOC_SINGLE("DC Filter Enable Switch", UDA134X_STATUS0, 0, 1, 0),
};
static const struct snd_kcontrol_new uda1345_snd_controls[] = {
SOC_SINGLE("Master Playback Volume", UDA134X_DATA000, 0, 0x3F, 1),
SOC_ENUM("PCM Playback De-emphasis", uda134x_mixer_enum[1]),
SOC_SINGLE("DC Filter Enable Switch", UDA134X_STATUS0, 0, 1, 0),
};
/* UDA1341 has the DAC/ADC power down in STATUS1 */
static const struct snd_soc_dapm_widget uda1341_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC", "Playback", UDA134X_STATUS1, 0, 0),
SND_SOC_DAPM_ADC("ADC", "Capture", UDA134X_STATUS1, 1, 0),
};
/* UDA1340/4/5 has the DAC/ADC pwoer down in DATA0 11 */
static const struct snd_soc_dapm_widget uda1340_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC", "Playback", UDA134X_DATA011, 0, 0),
SND_SOC_DAPM_ADC("ADC", "Capture", UDA134X_DATA011, 1, 0),
};
/* Common DAPM widgets */
static const struct snd_soc_dapm_widget uda134x_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINL1"),
SND_SOC_DAPM_INPUT("VINR1"),
SND_SOC_DAPM_INPUT("VINL2"),
SND_SOC_DAPM_INPUT("VINR2"),
SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
};
static const struct snd_soc_dapm_route uda134x_dapm_routes[] = {
{ "ADC", NULL, "VINL1" },
{ "ADC", NULL, "VINR1" },
{ "ADC", NULL, "VINL2" },
{ "ADC", NULL, "VINR2" },
{ "VOUTL", NULL, "DAC" },
{ "VOUTR", NULL, "DAC" },
};
static const struct snd_soc_dai_ops uda134x_dai_ops = {
.startup = uda134x_startup,
.shutdown = uda134x_shutdown,
.hw_params = uda134x_hw_params,
.digital_mute = uda134x_mute,
.set_sysclk = uda134x_set_dai_sysclk,
.set_fmt = uda134x_set_dai_fmt,
};
static struct snd_soc_dai_driver uda134x_dai = {
.name = "uda134x-hifi",
/* playback capabilities */
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = UDA134X_RATES,
.formats = UDA134X_FORMATS,
},
/* capture capabilities */
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = UDA134X_RATES,
.formats = UDA134X_FORMATS,
},
/* pcm operations */
.ops = &uda134x_dai_ops,
};
static int uda134x_soc_probe(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
struct uda134x_priv *uda134x = snd_soc_codec_get_drvdata(codec);
struct uda134x_platform_data *pd = uda134x->pd;
const struct snd_soc_dapm_widget *widgets;
unsigned num_widgets;
int ret;
printk(KERN_INFO "UDA134X SoC Audio Codec\n");
switch (pd->model) {
case UDA134X_UDA1340:
case UDA134X_UDA1341:
case UDA134X_UDA1344:
case UDA134X_UDA1345:
break;
default:
printk(KERN_ERR "UDA134X SoC codec: "
"unsupported model %d\n",
pd->model);
return -EINVAL;
}
if (pd->power)
pd->power(1);
uda134x_reset(codec);
if (pd->model == UDA134X_UDA1341) {
widgets = uda1341_dapm_widgets;
num_widgets = ARRAY_SIZE(uda1341_dapm_widgets);
} else {
widgets = uda1340_dapm_widgets;
num_widgets = ARRAY_SIZE(uda1340_dapm_widgets);
}
ret = snd_soc_dapm_new_controls(dapm, widgets, num_widgets);
if (ret) {
printk(KERN_ERR "%s failed to register dapm controls: %d",
__func__, ret);
return ret;
}
switch (pd->model) {
case UDA134X_UDA1340:
case UDA134X_UDA1344:
ret = snd_soc_add_codec_controls(codec, uda1340_snd_controls,
ARRAY_SIZE(uda1340_snd_controls));
break;
case UDA134X_UDA1341:
ret = snd_soc_add_codec_controls(codec, uda1341_snd_controls,
ARRAY_SIZE(uda1341_snd_controls));
break;
case UDA134X_UDA1345:
ret = snd_soc_add_codec_controls(codec, uda1345_snd_controls,
ARRAY_SIZE(uda1345_snd_controls));
break;
default:
printk(KERN_ERR "%s unknown codec type: %d",
__func__, pd->model);
return -EINVAL;
}
if (ret < 0) {
printk(KERN_ERR "UDA134X: failed to register controls\n");
return ret;
}
return 0;
}
static const struct snd_soc_codec_driver soc_codec_dev_uda134x = {
.probe = uda134x_soc_probe,
.set_bias_level = uda134x_set_bias_level,
.suspend_bias_off = true,
.component_driver = {
.dapm_widgets = uda134x_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(uda134x_dapm_widgets),
.dapm_routes = uda134x_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(uda134x_dapm_routes),
},
};
static const struct regmap_config uda134x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = UDA134X_DATA1,
.reg_defaults = uda134x_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(uda134x_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.reg_write = uda134x_regmap_write,
};
static int uda134x_codec_probe(struct platform_device *pdev)
{
struct uda134x_platform_data *pd = pdev->dev.platform_data;
struct uda134x_priv *uda134x;
int ret;
if (!pd) {
dev_err(&pdev->dev, "Missing L3 bitbang function\n");
return -ENODEV;
}
uda134x = devm_kzalloc(&pdev->dev, sizeof(*uda134x), GFP_KERNEL);
if (!uda134x)
return -ENOMEM;
uda134x->pd = pd;
platform_set_drvdata(pdev, uda134x);
if (pd->l3.use_gpios) {
ret = l3_set_gpio_ops(&pdev->dev, &uda134x->pd->l3);
if (ret < 0)
return ret;
}
uda134x->regmap = devm_regmap_init(&pdev->dev, NULL, pd,
&uda134x_regmap_config);
if (IS_ERR(uda134x->regmap))
return PTR_ERR(uda134x->regmap);
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_uda134x, &uda134x_dai, 1);
}
static int uda134x_codec_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver uda134x_codec_driver = {
.driver = {
.name = "uda134x-codec",
},
.probe = uda134x_codec_probe,
.remove = uda134x_codec_remove,
};
module_platform_driver(uda134x_codec_driver);
MODULE_DESCRIPTION("UDA134X ALSA soc codec driver");
MODULE_AUTHOR("Zoltan Devai, Christian Pellegrin <chripell@evolware.org>");
MODULE_LICENSE("GPL");
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