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/*
* sdp3430.c -- SoC audio for TI OMAP3430 SDP
*
* Author: Misael Lopez Cruz <x0052729@ti.com>
*
* Based on:
* Author: Steve Sakoman <steve@sakoman.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 <linux/i2c/twl.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <plat/mcbsp.h>
#include <linux/platform_data/gpio-omap.h>
/* Register descriptions for twl4030 codec part */
#include <linux/mfd/twl4030-audio.h>
#include <linux/module.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
/* TWL4030 PMBR1 Register */
#define TWL4030_INTBR_PMBR1 0x0D
/* TWL4030 PMBR1 Register GPIO6 mux bit */
#define TWL4030_GPIO6_PWM0_MUTE(value) (value << 2)
static struct snd_soc_card snd_soc_sdp3430;
static int sdp3430_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 ret;
/* Set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set codec system clock\n");
return ret;
}
return 0;
}
static struct snd_soc_ops sdp3430_ops = {
.hw_params = sdp3430_hw_params,
};
/* Headset jack */
static struct snd_soc_jack hs_jack;
/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headset Stereophone",
.mask = SND_JACK_HEADPHONE,
},
};
/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
{
.gpio = (OMAP_MAX_GPIO_LINES + 2),
.name = "hsdet-gpio",
.report = SND_JACK_HEADSET,
.debounce_time = 200,
},
};
/* SDP3430 machine DAPM */
static const struct snd_soc_dapm_widget sdp3430_twl4030_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),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* External Mics: MAINMIC, SUBMIC with bias*/
{"MAINMIC", NULL, "Mic Bias 1"},
{"SUBMIC", NULL, "Mic Bias 2"},
{"Mic Bias 1", NULL, "Ext Mic"},
{"Mic Bias 2", 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"},
};
static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int ret;
/* SDP3430 connected pins */
snd_soc_dapm_enable_pin(dapm, "Ext Mic");
snd_soc_dapm_enable_pin(dapm, "Ext Spk");
snd_soc_dapm_disable_pin(dapm, "Headset Mic");
snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
/* TWL4030 not connected pins */
snd_soc_dapm_nc_pin(dapm, "AUXL");
snd_soc_dapm_nc_pin(dapm, "AUXR");
snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
snd_soc_dapm_nc_pin(dapm, "OUTL");
snd_soc_dapm_nc_pin(dapm, "OUTR");
snd_soc_dapm_nc_pin(dapm, "EARPIECE");
snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
snd_soc_dapm_nc_pin(dapm, "CARKITL");
snd_soc_dapm_nc_pin(dapm, "CARKITR");
/* Headset jack detection */
ret = snd_soc_jack_new(codec, "Headset Jack",
SND_JACK_HEADSET, &hs_jack);
if (ret)
return ret;
ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
hs_jack_pins);
if (ret)
return ret;
ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
return ret;
}
static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
unsigned short reg;
/* Enable voice interface */
reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
return 0;
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link sdp3430_dai[] = {
{
.name = "TWL4030 I2S",
.stream_name = "TWL4030 Audio",
.cpu_dai_name = "omap-mcbsp.2",
.codec_dai_name = "twl4030-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.init = sdp3430_twl4030_init,
.ops = &sdp3430_ops,
},
{
.name = "TWL4030 PCM",
.stream_name = "TWL4030 Voice",
.cpu_dai_name = "omap-mcbsp.3",
.codec_dai_name = "twl4030-voice",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.init = sdp3430_twl4030_voice_init,
.ops = &sdp3430_ops,
},
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_sdp3430 = {
.name = "SDP3430",
.owner = THIS_MODULE,
.dai_link = sdp3430_dai,
.num_links = ARRAY_SIZE(sdp3430_dai),
.dapm_widgets = sdp3430_twl4030_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(sdp3430_twl4030_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static struct platform_device *sdp3430_snd_device;
static int __init sdp3430_soc_init(void)
{
int ret;
u8 pin_mux;
if (!machine_is_omap_3430sdp())
return -ENODEV;
printk(KERN_INFO "SDP3430 SoC init\n");
sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
if (!sdp3430_snd_device) {
printk(KERN_ERR "Platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
/* Set TWL4030 GPIO6 as EXTMUTE signal */
twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
TWL4030_INTBR_PMBR1);
pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
TWL4030_INTBR_PMBR1);
ret = platform_device_add(sdp3430_snd_device);
if (ret)
goto err1;
return 0;
err1:
printk(KERN_ERR "Unable to add platform device\n");
platform_device_put(sdp3430_snd_device);
return ret;
}
module_init(sdp3430_soc_init);
static void __exit sdp3430_soc_exit(void)
{
snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
platform_device_unregister(sdp3430_snd_device);
}
module_exit(sdp3430_soc_exit);
MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
MODULE_DESCRIPTION("ALSA SoC SDP3430");
MODULE_LICENSE("GPL");
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