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linux/sound/soc/pxa/tosa.c
Lars-Peter Clausen 92be58106e ASoC: pxa: Make static string arrays 'const 'char * const []' 
const char * const [] is the preferred type for static string arrays since
this states explicitly that the individual entries are not going to be
changed. Due to limitations in the ASoC API it was not possible to use it
for enum text arrays. Commit 87023ff74 ('ASoC: Declare const properly for
enum texts') changed this, but most drivers still use 'const char
* []' as the type for their enum text arrays.

Change these occurrences of 'static * const char * []' to 'static const
char * const []'.

The conversion was done automatically using the following coccinelle semantic
patch:
// <smpl>
@disable optional_qualifier@
identifier s;
@@
 static
-const char *
+const char * const
 s[] = ...;
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-11-13 11:36:59 +00:00

267 lines
6.6 KiB
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/*
* tosa.c -- SoC audio for Tosa
*
* Copyright 2005 Wolfson Microelectronics PLC.
* Copyright 2005 Openedhand Ltd.
*
* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
* Richard Purdie <richard@openedhand.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.
*
* GPIO's
* 1 - Jack Insertion
* 5 - Hookswitch (headset answer/hang up switch)
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/tosa.h>
#include <mach/audio.h>
#include "../codecs/wm9712.h"
#include "pxa2xx-ac97.h"
#define TOSA_HP 0
#define TOSA_MIC_INT 1
#define TOSA_HEADSET 2
#define TOSA_HP_OFF 3
#define TOSA_SPK_ON 0
#define TOSA_SPK_OFF 1
static int tosa_jack_func;
static int tosa_spk_func;
static void tosa_ext_control(struct snd_soc_dapm_context *dapm)
{
snd_soc_dapm_mutex_lock(dapm);
/* set up jack connection */
switch (tosa_jack_func) {
case TOSA_HP:
snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
break;
case TOSA_MIC_INT:
snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
break;
case TOSA_HEADSET:
snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
break;
}
if (tosa_spk_func == TOSA_SPK_ON)
snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
else
snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
snd_soc_dapm_sync_unlocked(dapm);
snd_soc_dapm_mutex_unlock(dapm);
}
static int tosa_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
/* check the jack status at stream startup */
tosa_ext_control(&rtd->card->dapm);
return 0;
}
static struct snd_soc_ops tosa_ops = {
.startup = tosa_startup,
};
static int tosa_get_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.enumerated.item[0] = tosa_jack_func;
return 0;
}
static int tosa_set_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
if (tosa_jack_func == ucontrol->value.enumerated.item[0])
return 0;
tosa_jack_func = ucontrol->value.enumerated.item[0];
tosa_ext_control(&card->dapm);
return 1;
}
static int tosa_get_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.enumerated.item[0] = tosa_spk_func;
return 0;
}
static int tosa_set_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
if (tosa_spk_func == ucontrol->value.enumerated.item[0])
return 0;
tosa_spk_func = ucontrol->value.enumerated.item[0];
tosa_ext_control(&card->dapm);
return 1;
}
/* tosa dapm event handlers */
static int tosa_hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
return 0;
}
/* tosa machine dapm widgets */
static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
SND_SOC_DAPM_HP("Headset Jack", NULL),
SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
};
/* tosa audio map */
static const struct snd_soc_dapm_route audio_map[] = {
/* headphone connected to HPOUTL, HPOUTR */
{"Headphone Jack", NULL, "HPOUTL"},
{"Headphone Jack", NULL, "HPOUTR"},
/* ext speaker connected to LOUT2, ROUT2 */
{"Speaker", NULL, "LOUT2"},
{"Speaker", NULL, "ROUT2"},
/* internal mic is connected to mic1, mic2 differential - with bias */
{"MIC1", NULL, "Mic Bias"},
{"MIC2", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Mic (Internal)"},
/* headset is connected to HPOUTR, and LINEINR with bias */
{"Headset Jack", NULL, "HPOUTR"},
{"LINEINR", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Headset Jack"},
};
static const char * const jack_function[] = {"Headphone", "Mic", "Line",
"Headset", "Off"};
static const char * const spk_function[] = {"On", "Off"};
static const struct soc_enum tosa_enum[] = {
SOC_ENUM_SINGLE_EXT(5, jack_function),
SOC_ENUM_SINGLE_EXT(2, spk_function),
};
static const struct snd_kcontrol_new tosa_controls[] = {
SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
tosa_set_jack),
SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
tosa_set_spk),
};
static struct snd_soc_dai_link tosa_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai_name = "pxa2xx-ac97",
.codec_dai_name = "wm9712-hifi",
.platform_name = "pxa-pcm-audio",
.codec_name = "wm9712-codec",
.ops = &tosa_ops,
},
{
.name = "AC97 Aux",
.stream_name = "AC97 Aux",
.cpu_dai_name = "pxa2xx-ac97-aux",
.codec_dai_name = "wm9712-aux",
.platform_name = "pxa-pcm-audio",
.codec_name = "wm9712-codec",
.ops = &tosa_ops,
},
};
static struct snd_soc_card tosa = {
.name = "Tosa",
.owner = THIS_MODULE,
.dai_link = tosa_dai,
.num_links = ARRAY_SIZE(tosa_dai),
.controls = tosa_controls,
.num_controls = ARRAY_SIZE(tosa_controls),
.dapm_widgets = tosa_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
.fully_routed = true,
};
static int tosa_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &tosa;
int ret;
ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
"Headphone Jack");
if (ret)
return ret;
card->dev = &pdev->dev;
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
gpio_free(TOSA_GPIO_L_MUTE);
}
return ret;
}
static int tosa_remove(struct platform_device *pdev)
{
gpio_free(TOSA_GPIO_L_MUTE);
return 0;
}
static struct platform_driver tosa_driver = {
.driver = {
.name = "tosa-audio",
.pm = &snd_soc_pm_ops,
},
.probe = tosa_probe,
.remove = tosa_remove,
};
module_platform_driver(tosa_driver);
/* Module information */
MODULE_AUTHOR("Richard Purdie");
MODULE_DESCRIPTION("ALSA SoC Tosa");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:tosa-audio");
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