sound/soc/omap/sdp4430.c - linux - Git at Google

 /*
  * 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/jack.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,
 };

 /* 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,
 	},
 };

 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),
 	SND_SOC_DAPM_INPUT("Aux/FM Stereo In"),
 };

 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"},

 	/* Aux/FM Stereo In: AFML, AFMR */
 	{"AFML", NULL, "Aux/FM Stereo In"},
 	{"AFMR", NULL, "Aux/FM Stereo In"},
 };

 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;
 	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(dapm, 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(dapm, audio_map, ARRAY_SIZE(audio_map));

 	/* SDP4430 connected pins */
 	snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 	snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 	snd_soc_dapm_enable_pin(dapm, "AFML");
 	snd_soc_dapm_enable_pin(dapm, "AFMR");
 	snd_soc_dapm_enable_pin(dapm, "Headset Mic");
 	snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");

 	ret = snd_soc_dapm_sync(dapm);
 	if (ret)
 		return ret;

 	/* 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 (machine_is_omap_4430sdp())
 		twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 	else
 		snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);

 	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())
 		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");
	/*
	* 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/jack.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,
	};

	/* 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,
	},
	};

	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),
	SND_SOC_DAPM_INPUT("Aux/FM Stereo In"),
	};

	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"},

	/* Aux/FM Stereo In: AFML, AFMR */
	{"AFML", NULL, "Aux/FM Stereo In"},
	{"AFMR", NULL, "Aux/FM Stereo In"},
	};

	static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	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(dapm, 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(dapm, audio_map, ARRAY_SIZE(audio_map));

	/* SDP4430 connected pins */
	snd_soc_dapm_enable_pin(dapm, "Ext Mic");
	snd_soc_dapm_enable_pin(dapm, "Ext Spk");
	snd_soc_dapm_enable_pin(dapm, "AFML");
	snd_soc_dapm_enable_pin(dapm, "AFMR");
	snd_soc_dapm_enable_pin(dapm, "Headset Mic");
	snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");

	ret = snd_soc_dapm_sync(dapm);
	if (ret)
	return ret;

	/* 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 (machine_is_omap_4430sdp())
	twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
	else
	snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);

	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())
	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");