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/*
* sdp4430.c -- SoC audio for TI OMAP4430 SDP
*
* Author: Misael Lopez Cruz <x0052729@ti.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/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include <plat/hardware.h>
#include <plat/mux.h>
#include "mcpdm.h"
#include "omap-pcm.h"
#include "../codecs/twl6040.h"
static int twl6040_power_mode;
static int sdp4430_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 clk_id, freq;
int ret;
if (twl6040_power_mode) {
clk_id = TWL6040_SYSCLK_SEL_HPPLL;
freq = 38400000;
} else {
clk_id = TWL6040_SYSCLK_SEL_LPPLL;
freq = 32768;
}
/* set the codec mclk */
ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
SND_SOC_CLOCK_IN);
if (ret) {
printk(KERN_ERR "can't set codec system clock\n");
return ret;
}
return ret;
}
static struct snd_soc_ops sdp4430_ops = {
.hw_params = sdp4430_hw_params,
};
static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = twl6040_power_mode;
return 0;
}
static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
if (twl6040_power_mode == ucontrol->value.integer.value[0])
return 0;
twl6040_power_mode = ucontrol->value.integer.value[0];
return 1;
}
static const char *power_texts[] = {"Low-Power", "High-Performance"};
static const struct soc_enum sdp4430_enum[] = {
SOC_ENUM_SINGLE_EXT(2, power_texts),
};
static const struct snd_kcontrol_new sdp4430_controls[] = {
SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
sdp4430_get_power_mode, sdp4430_set_power_mode),
};
/* SDP4430 machine DAPM */
static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Ext Mic", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_HP("Headset Stereophone", NULL),
SND_SOC_DAPM_SPK("Earphone Spk", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* External Mics: MAINMIC, SUBMIC with bias*/
{"MAINMIC", NULL, "Main Mic Bias"},
{"SUBMIC", NULL, "Main Mic Bias"},
{"Main Mic Bias", NULL, "Ext Mic"},
/* External Speakers: HFL, HFR */
{"Ext Spk", NULL, "HFL"},
{"Ext Spk", NULL, "HFR"},
/* Headset Mic: HSMIC with bias */
{"HSMIC", NULL, "Headset Mic Bias"},
{"Headset Mic Bias", NULL, "Headset Mic"},
/* Headset Stereophone (Headphone): HSOL, HSOR */
{"Headset Stereophone", NULL, "HSOL"},
{"Headset Stereophone", NULL, "HSOR"},
/* Earphone speaker */
{"Earphone Spk", NULL, "EP"},
};
static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
int ret;
/* Add SDP4430 specific controls */
ret = snd_soc_add_controls(codec, sdp4430_controls,
ARRAY_SIZE(sdp4430_controls));
if (ret)
return ret;
/* Add SDP4430 specific widgets */
ret = snd_soc_dapm_new_controls(codec, sdp4430_twl6040_dapm_widgets,
ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
if (ret)
return ret;
/* Set up SDP4430 specific audio path audio_map */
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
/* SDP4430 connected pins */
snd_soc_dapm_enable_pin(codec, "Ext Mic");
snd_soc_dapm_enable_pin(codec, "Ext Spk");
snd_soc_dapm_enable_pin(codec, "Headset Mic");
snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
/* TWL6040 not connected pins */
snd_soc_dapm_nc_pin(codec, "AFML");
snd_soc_dapm_nc_pin(codec, "AFMR");
ret = snd_soc_dapm_sync(codec);
return ret;
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link sdp4430_dai = {
.name = "TWL6040",
.stream_name = "TWL6040",
.cpu_dai_name ="omap-mcpdm-dai",
.codec_dai_name = "twl6040-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "twl6040-codec",
.init = sdp4430_twl6040_init,
.ops = &sdp4430_ops,
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_sdp4430 = {
.name = "SDP4430",
.dai_link = &sdp4430_dai,
.num_links = 1,
};
static struct platform_device *sdp4430_snd_device;
static int __init sdp4430_soc_init(void)
{
int ret;
if (!machine_is_omap_4430sdp()) {
pr_debug("Not SDP4430!\n");
return -ENODEV;
}
printk(KERN_INFO "SDP4430 SoC init\n");
sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
if (!sdp4430_snd_device) {
printk(KERN_ERR "Platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
ret = platform_device_add(sdp4430_snd_device);
if (ret)
goto err;
/* Codec starts in HP mode */
twl6040_power_mode = 1;
return 0;
err:
printk(KERN_ERR "Unable to add platform device\n");
platform_device_put(sdp4430_snd_device);
return ret;
}
module_init(sdp4430_soc_init);
static void __exit sdp4430_soc_exit(void)
{
platform_device_unregister(sdp4430_snd_device);
}
module_exit(sdp4430_soc_exit);
MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
MODULE_DESCRIPTION("ALSA SoC SDP4430");
MODULE_LICENSE("GPL");
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