kevin/linux
1
Fork 0
Code
f75a8ff67d
linux/sound/soc/omap/n810.c
Axel Lin b425b88418 ASoC: omap: Add .owner to struct snd_soc_card 
Missed .owner of struct snd_soc_card will prevent the module from being
removed from underneath its users.

Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>
2011-12-23 18:13:01 +00:00

386 lines
9.5 KiB
C
Raw Blame History

/*
* n810.c -- SoC audio for Nokia N810
*
* Copyright (C) 2008 Nokia Corporation
*
* Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include <plat/mcbsp.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#define N810_HEADSET_AMP_GPIO 10
#define N810_SPEAKER_AMP_GPIO 101
enum {
N810_JACK_DISABLED,
N810_JACK_HP,
N810_JACK_HS,
N810_JACK_MIC,
};
static struct clk *sys_clkout2;
static struct clk *sys_clkout2_src;
static struct clk *func96m_clk;
static int n810_spk_func;
static int n810_jack_func;
static int n810_dmic_func;
static void n810_ext_control(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
int hp = 0, line1l = 0;
switch (n810_jack_func) {
case N810_JACK_HS:
line1l = 1;
case N810_JACK_HP:
hp = 1;
break;
case N810_JACK_MIC:
line1l = 1;
break;
}
if (n810_spk_func)
snd_soc_dapm_enable_pin(dapm, "Ext Spk");
else
snd_soc_dapm_disable_pin(dapm, "Ext Spk");
if (hp)
snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
else
snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
if (line1l)
snd_soc_dapm_enable_pin(dapm, "LINE1L");
else
snd_soc_dapm_disable_pin(dapm, "LINE1L");
if (n810_dmic_func)
snd_soc_dapm_enable_pin(dapm, "DMic");
else
snd_soc_dapm_disable_pin(dapm, "DMic");
snd_soc_dapm_sync(dapm);
}
static int n810_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
n810_ext_control(codec);
return clk_enable(sys_clkout2);
}
static void n810_shutdown(struct snd_pcm_substream *substream)
{
clk_disable(sys_clkout2);
}
static int n810_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
int err;
/* Set the codec system clock for DAC and ADC */
err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
SND_SOC_CLOCK_IN);
return err;
}
static struct snd_soc_ops n810_ops = {
.startup = n810_startup,
.hw_params = n810_hw_params,
.shutdown = n810_shutdown,
};
static int n810_get_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = n810_spk_func;
return 0;
}
static int n810_set_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (n810_spk_func == ucontrol->value.integer.value[0])
return 0;
n810_spk_func = ucontrol->value.integer.value[0];
n810_ext_control(codec);
return 1;
}
static int n810_get_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = n810_jack_func;
return 0;
}
static int n810_set_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (n810_jack_func == ucontrol->value.integer.value[0])
return 0;
n810_jack_func = ucontrol->value.integer.value[0];
n810_ext_control(codec);
return 1;
}
static int n810_get_input(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = n810_dmic_func;
return 0;
}
static int n810_set_input(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (n810_dmic_func == ucontrol->value.integer.value[0])
return 0;
n810_dmic_func = ucontrol->value.integer.value[0];
n810_ext_control(codec);
return 1;
}
static int n810_spk_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event))
gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
else
gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
return 0;
}
static int n810_jack_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event))
gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
else
gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
return 0;
}
static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
SND_SOC_DAPM_MIC("DMic", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Headphone Jack", NULL, "HPLOUT"},
{"Headphone Jack", NULL, "HPROUT"},
{"Ext Spk", NULL, "LLOUT"},
{"Ext Spk", NULL, "RLOUT"},
{"DMic Rate 64", NULL, "Mic Bias 2V"},
{"Mic Bias 2V", NULL, "DMic"},
};
static const char *spk_function[] = {"Off", "On"};
static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
static const char *input_function[] = {"ADC", "Digital Mic"};
static const struct soc_enum n810_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
};
static const struct snd_kcontrol_new aic33_n810_controls[] = {
SOC_ENUM_EXT("Speaker Function", n810_enum[0],
n810_get_spk, n810_set_spk),
SOC_ENUM_EXT("Jack Function", n810_enum[1],
n810_get_jack, n810_set_jack),
SOC_ENUM_EXT("Input Select", n810_enum[2],
n810_get_input, n810_set_input),
};
static int n810_aic33_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
/* Not connected */
snd_soc_dapm_nc_pin(dapm, "MONO_LOUT");
snd_soc_dapm_nc_pin(dapm, "HPLCOM");
snd_soc_dapm_nc_pin(dapm, "HPRCOM");
snd_soc_dapm_nc_pin(dapm, "MIC3L");
snd_soc_dapm_nc_pin(dapm, "MIC3R");
snd_soc_dapm_nc_pin(dapm, "LINE1R");
snd_soc_dapm_nc_pin(dapm, "LINE2L");
snd_soc_dapm_nc_pin(dapm, "LINE2R");
return 0;
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link n810_dai = {
.name = "TLV320AIC33",
.stream_name = "AIC33",
.cpu_dai_name = "omap-mcbsp-dai.1",
.platform_name = "omap-pcm-audio",
.codec_name = "tlv320aic3x-codec.2-0018",
.codec_dai_name = "tlv320aic3x-hifi",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.init = n810_aic33_init,
.ops = &n810_ops,
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_n810 = {
.name = "N810",
.owner = THIS_MODULE,
.dai_link = &n810_dai,
.num_links = 1,
.controls = aic33_n810_controls,
.num_controls = ARRAY_SIZE(aic33_n810_controls),
.dapm_widgets = aic33_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static struct platform_device *n810_snd_device;
static int __init n810_soc_init(void)
{
int err;
struct device *dev;
if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
return -ENODEV;
n810_snd_device = platform_device_alloc("soc-audio", -1);
if (!n810_snd_device)
return -ENOMEM;
platform_set_drvdata(n810_snd_device, &snd_soc_n810);
err = platform_device_add(n810_snd_device);
if (err)
goto err1;
dev = &n810_snd_device->dev;
sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
if (IS_ERR(sys_clkout2_src)) {
dev_err(dev, "Could not get sys_clkout2_src clock\n");
err = PTR_ERR(sys_clkout2_src);
goto err2;
}
sys_clkout2 = clk_get(dev, "sys_clkout2");
if (IS_ERR(sys_clkout2)) {
dev_err(dev, "Could not get sys_clkout2\n");
err = PTR_ERR(sys_clkout2);
goto err3;
}
/*
* Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
* 96 MHz as its parent in order to get 12 MHz
*/
func96m_clk = clk_get(dev, "func_96m_ck");
if (IS_ERR(func96m_clk)) {
dev_err(dev, "Could not get func 96M clock\n");
err = PTR_ERR(func96m_clk);
goto err4;
}
clk_set_parent(sys_clkout2_src, func96m_clk);
clk_set_rate(sys_clkout2, 12000000);
BUG_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
(gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0));
gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
return 0;
err4:
clk_put(sys_clkout2);
err3:
clk_put(sys_clkout2_src);
err2:
platform_device_del(n810_snd_device);
err1:
platform_device_put(n810_snd_device);
return err;
}
static void __exit n810_soc_exit(void)
{
gpio_free(N810_SPEAKER_AMP_GPIO);
gpio_free(N810_HEADSET_AMP_GPIO);
clk_put(sys_clkout2_src);
clk_put(sys_clkout2);
clk_put(func96m_clk);
platform_device_unregister(n810_snd_device);
}
module_init(n810_soc_init);
module_exit(n810_soc_exit);
MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
MODULE_DESCRIPTION("ALSA SoC Nokia N810");
MODULE_LICENSE("GPL");
View Git Blame Copy Permalink