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linux/sound/soc/codecs/ad1980.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

338 lines
8.7 KiB
C
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/*
* ad1980.c -- ALSA Soc AD1980 codec support
*
* Copyright: Analog Device Inc.
* Author: Roy Huang <roy.huang@analog.com>
* Cliff Cai <cliff.cai@analog.com>
*
* 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.
*/
/*
* WARNING:
*
* Because Analog Devices Inc. discontinued the ad1980 sound chip since
* Sep. 2009, this ad1980 driver is not maintained, tested and supported
* by ADI now.
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>
static const struct reg_default ad1980_reg_defaults[] = {
{ 0x02, 0x8000 },
{ 0x04, 0x8000 },
{ 0x06, 0x8000 },
{ 0x0c, 0x8008 },
{ 0x0e, 0x8008 },
{ 0x10, 0x8808 },
{ 0x12, 0x8808 },
{ 0x16, 0x8808 },
{ 0x18, 0x8808 },
{ 0x1a, 0x0000 },
{ 0x1c, 0x8000 },
{ 0x20, 0x0000 },
{ 0x28, 0x03c7 },
{ 0x2c, 0xbb80 },
{ 0x2e, 0xbb80 },
{ 0x30, 0xbb80 },
{ 0x32, 0xbb80 },
{ 0x36, 0x8080 },
{ 0x38, 0x8080 },
{ 0x3a, 0x2000 },
{ 0x60, 0x0000 },
{ 0x62, 0x0000 },
{ 0x72, 0x0000 },
{ 0x74, 0x1001 },
{ 0x76, 0x0000 },
};
static bool ad1980_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case AC97_RESET ... AC97_MASTER_MONO:
case AC97_PHONE ... AC97_CD:
case AC97_AUX ... AC97_GENERAL_PURPOSE:
case AC97_POWERDOWN ... AC97_PCM_LR_ADC_RATE:
case AC97_SPDIF:
case AC97_CODEC_CLASS_REV:
case AC97_PCI_SVID:
case AC97_AD_CODEC_CFG:
case AC97_AD_JACK_SPDIF:
case AC97_AD_SERIAL_CFG:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return true;
default:
return false;
}
}
static bool ad1980_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return false;
default:
return ad1980_readable_reg(dev, reg);
}
}
static const struct regmap_config ad1980_regmap_config = {
.reg_bits = 16,
.reg_stride = 2,
.val_bits = 16,
.max_register = 0x7e,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = regmap_ac97_default_volatile,
.readable_reg = ad1980_readable_reg,
.writeable_reg = ad1980_writeable_reg,
.reg_defaults = ad1980_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(ad1980_reg_defaults),
};
static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
"Stereo Mix", "Mono Mix", "Phone"};
static SOC_ENUM_DOUBLE_DECL(ad1980_cap_src,
AC97_REC_SEL, 8, 0, ad1980_rec_sel);
static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
SOC_ENUM("Capture Source", ad1980_cap_src),
SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
};
static const struct snd_soc_dapm_widget ad1980_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("MIC1"),
SND_SOC_DAPM_INPUT("MIC2"),
SND_SOC_DAPM_INPUT("CD_L"),
SND_SOC_DAPM_INPUT("CD_R"),
SND_SOC_DAPM_INPUT("AUX_L"),
SND_SOC_DAPM_INPUT("AUX_R"),
SND_SOC_DAPM_INPUT("LINE_IN_L"),
SND_SOC_DAPM_INPUT("LINE_IN_R"),
SND_SOC_DAPM_OUTPUT("LFE_OUT"),
SND_SOC_DAPM_OUTPUT("CENTER_OUT"),
SND_SOC_DAPM_OUTPUT("LINE_OUT_L"),
SND_SOC_DAPM_OUTPUT("LINE_OUT_R"),
SND_SOC_DAPM_OUTPUT("MONO_OUT"),
SND_SOC_DAPM_OUTPUT("HP_OUT_L"),
SND_SOC_DAPM_OUTPUT("HP_OUT_R"),
};
static const struct snd_soc_dapm_route ad1980_dapm_routes[] = {
{ "Capture", NULL, "MIC1" },
{ "Capture", NULL, "MIC2" },
{ "Capture", NULL, "CD_L" },
{ "Capture", NULL, "CD_R" },
{ "Capture", NULL, "AUX_L" },
{ "Capture", NULL, "AUX_R" },
{ "Capture", NULL, "LINE_IN_L" },
{ "Capture", NULL, "LINE_IN_R" },
{ "LFE_OUT", NULL, "Playback" },
{ "CENTER_OUT", NULL, "Playback" },
{ "LINE_OUT_L", NULL, "Playback" },
{ "LINE_OUT_R", NULL, "Playback" },
{ "MONO_OUT", NULL, "Playback" },
{ "HP_OUT_L", NULL, "Playback" },
{ "HP_OUT_R", NULL, "Playback" },
};
static struct snd_soc_dai_driver ad1980_dai = {
.name = "ad1980-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 6,
.rates = SNDRV_PCM_RATE_48000,
.formats = SND_SOC_STD_AC97_FMTS, },
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SND_SOC_STD_AC97_FMTS, },
};
#define AD1980_VENDOR_ID 0x41445300
#define AD1980_VENDOR_MASK 0xffffff00
static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
unsigned int retry_cnt = 0;
int ret;
do {
ret = snd_ac97_reset(ac97, true, AD1980_VENDOR_ID,
AD1980_VENDOR_MASK);
if (ret >= 0)
return 0;
/*
* Set bit 16slot in register 74h, then every slot will has only
* 16 bits. This command is sent out in 20bit mode, in which
* case the first nibble of data is eaten by the addr. (Tag is
* always 16 bit)
*/
snd_soc_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
} while (retry_cnt++ < 10);
dev_err(codec->dev, "Failed to reset: AC97 link error\n");
return -EIO;
}
static int ad1980_soc_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
struct regmap *regmap;
int ret;
u16 vendor_id2;
u16 ext_status;
ac97 = snd_soc_new_ac97_codec(codec, 0, 0);
if (IS_ERR(ac97)) {
ret = PTR_ERR(ac97);
dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret);
return ret;
}
regmap = regmap_init_ac97(ac97, &ad1980_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
goto err_free_ac97;
}
snd_soc_codec_init_regmap(codec, regmap);
snd_soc_codec_set_drvdata(codec, ac97);
ret = ad1980_reset(codec, 0);
if (ret < 0)
goto reset_err;
vendor_id2 = snd_soc_read(codec, AC97_VENDOR_ID2);
if (vendor_id2 == 0x5374) {
dev_warn(codec->dev,
"Found AD1981 - only 2/2 IN/OUT Channels supported\n");
}
/* unmute captures and playbacks volume */
snd_soc_write(codec, AC97_MASTER, 0x0000);
snd_soc_write(codec, AC97_PCM, 0x0000);
snd_soc_write(codec, AC97_REC_GAIN, 0x0000);
snd_soc_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
snd_soc_write(codec, AC97_SURROUND_MASTER, 0x0000);
/*power on LFE/CENTER/Surround DACs*/
ext_status = snd_soc_read(codec, AC97_EXTENDED_STATUS);
snd_soc_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
return 0;
reset_err:
snd_soc_codec_exit_regmap(codec);
err_free_ac97:
snd_soc_free_ac97_codec(ac97);
return ret;
}
static int ad1980_soc_remove(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_soc_codec_exit_regmap(codec);
snd_soc_free_ac97_codec(ac97);
return 0;
}
static const struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
.probe = ad1980_soc_probe,
.remove = ad1980_soc_remove,
.component_driver = {
.controls = ad1980_snd_ac97_controls,
.num_controls = ARRAY_SIZE(ad1980_snd_ac97_controls),
.dapm_widgets = ad1980_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ad1980_dapm_widgets),
.dapm_routes = ad1980_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(ad1980_dapm_routes),
},
};
static int ad1980_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_ad1980, &ad1980_dai, 1);
}
static int ad1980_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver ad1980_codec_driver = {
.driver = {
.name = "ad1980",
},
.probe = ad1980_probe,
.remove = ad1980_remove,
};
module_platform_driver(ad1980_codec_driver);
MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)");
MODULE_AUTHOR("Roy Huang, Cliff Cai");
MODULE_LICENSE("GPL");
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