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/*
* mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform
*
* Copyright (C) 2010 Intel Corp
* Author: Vinod Koul <vinod.koul@intel.com>
* Author: Harsha Priya <priya.harsha@intel.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; version 2 of the License.
*
* 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "../codecs/sn95031.h"
#define MID_MONO 1
#define MID_STEREO 2
#define MID_MAX_CAP 5
static unsigned int hs_switch;
static unsigned int lo_dac;
/* sound card controls */
static const char *headset_switch_text[] = {"Earpiece", "Headset"};
static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"};
static const struct soc_enum headset_enum =
SOC_ENUM_SINGLE_EXT(2, headset_switch_text);
static const struct soc_enum lo_enum =
SOC_ENUM_SINGLE_EXT(4, lo_text);
static int headset_get_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = hs_switch;
return 0;
}
static int headset_set_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (ucontrol->value.integer.value[0] == hs_switch)
return 0;
if (ucontrol->value.integer.value[0]) {
pr_debug("hs_set HS path\n");
snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTL");
snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTR");
snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
} else {
pr_debug("hs_set EP path\n");
snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTL");
snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTR");
snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
}
snd_soc_dapm_sync(&codec->dapm);
hs_switch = ucontrol->value.integer.value[0];
return 0;
}
static void lo_enable_out_pins(struct snd_soc_codec *codec)
{
snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL");
snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR");
snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL");
snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR");
snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT");
snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT");
if (hs_switch) {
snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTL");
snd_soc_dapm_enable_pin(&codec->dapm, "HPOUTR");
snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
} else {
snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTL");
snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTR");
snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
}
}
static int lo_get_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = lo_dac;
return 0;
}
static int lo_set_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (ucontrol->value.integer.value[0] == lo_dac)
return 0;
/* we dont want to work with last state of lineout so just enable all
* pins and then disable pins not required
*/
lo_enable_out_pins(codec);
switch (ucontrol->value.integer.value[0]) {
case 0:
pr_debug("set vibra path\n");
snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT");
snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT");
snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0);
break;
case 1:
pr_debug("set hs path\n");
snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTL");
snd_soc_dapm_disable_pin(&codec->dapm, "HPOUTR");
snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22);
break;
case 2:
pr_debug("set spkr path\n");
snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL");
snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR");
snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44);
break;
case 3:
pr_debug("set null path\n");
snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL");
snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR");
snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66);
break;
}
snd_soc_dapm_sync(&codec->dapm);
lo_dac = ucontrol->value.integer.value[0];
return 0;
}
static const struct snd_kcontrol_new mfld_snd_controls[] = {
SOC_ENUM_EXT("Playback Switch", headset_enum,
headset_get_switch, headset_set_switch),
SOC_ENUM_EXT("Lineout Mux", lo_enum,
lo_get_switch, lo_set_switch),
};
static int mfld_init(struct snd_soc_pcm_runtime *runtime)
{
struct snd_soc_codec *codec = runtime->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int ret_val;
ret_val = snd_soc_add_controls(codec, mfld_snd_controls,
ARRAY_SIZE(mfld_snd_controls));
if (ret_val) {
pr_err("soc_add_controls failed %d", ret_val);
return ret_val;
}
/* default is earpiece pin, userspace sets it explcitly */
snd_soc_dapm_disable_pin(dapm, "HPOUTL");
snd_soc_dapm_disable_pin(dapm, "HPOUTR");
/* default is lineout NC, userspace sets it explcitly */
snd_soc_dapm_disable_pin(dapm, "LINEOUTL");
snd_soc_dapm_disable_pin(dapm, "LINEOUTR");
lo_dac = 3;
hs_switch = 0;
/* we dont use linein in this so set to NC */
snd_soc_dapm_disable_pin(dapm, "LINEINL");
snd_soc_dapm_disable_pin(dapm, "LINEINR");
return snd_soc_dapm_sync(dapm);
}
struct snd_soc_dai_link mfld_msic_dailink[] = {
{
.name = "Medfield Headset",
.stream_name = "Headset",
.cpu_dai_name = "Headset-cpu-dai",
.codec_dai_name = "SN95031 Headset",
.codec_name = "sn95031",
.platform_name = "sst-platform",
.init = mfld_init,
},
{
.name = "Medfield Speaker",
.stream_name = "Speaker",
.cpu_dai_name = "Speaker-cpu-dai",
.codec_dai_name = "SN95031 Speaker",
.codec_name = "sn95031",
.platform_name = "sst-platform",
.init = NULL,
},
{
.name = "Medfield Vibra",
.stream_name = "Vibra1",
.cpu_dai_name = "Vibra1-cpu-dai",
.codec_dai_name = "SN95031 Vibra1",
.codec_name = "sn95031",
.platform_name = "sst-platform",
.init = NULL,
},
{
.name = "Medfield Haptics",
.stream_name = "Vibra2",
.cpu_dai_name = "Vibra2-cpu-dai",
.codec_dai_name = "SN95031 Vibra2",
.codec_name = "sn95031",
.platform_name = "sst-platform",
.init = NULL,
},
};
/* SoC card */
static struct snd_soc_card snd_soc_card_mfld = {
.name = "medfield_audio",
.dai_link = mfld_msic_dailink,
.num_links = ARRAY_SIZE(mfld_msic_dailink),
};
static int __devinit snd_mfld_mc_probe(struct platform_device *pdev)
{
struct platform_device *socdev;
int ret_val = 0;
pr_debug("snd_mfld_mc_probe called\n");
socdev = platform_device_alloc("soc-audio", -1);
if (!socdev) {
pr_err("soc-audio device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(socdev, &snd_soc_card_mfld);
ret_val = platform_device_add(socdev);
if (ret_val) {
pr_err("Unable to add soc-audio device, err %d\n", ret_val);
platform_device_put(socdev);
}
platform_set_drvdata(pdev, socdev);
pr_debug("successfully exited probe\n");
return ret_val;
}
static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
{
struct platform_device *socdev = platform_get_drvdata(pdev);
pr_debug("snd_mfld_mc_remove called\n");
platform_device_unregister(socdev);
platform_set_drvdata(pdev, NULL);
return 0;
}
static struct platform_driver snd_mfld_mc_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "msic_audio",
},
.probe = snd_mfld_mc_probe,
.remove = __devexit_p(snd_mfld_mc_remove),
};
static int __init snd_mfld_driver_init(void)
{
pr_debug("snd_mfld_driver_init called\n");
return platform_driver_register(&snd_mfld_mc_driver);
}
module_init(snd_mfld_driver_init);
static void __exit snd_mfld_driver_exit(void)
{
pr_debug("snd_mfld_driver_exit called\n");
platform_driver_unregister(&snd_mfld_mc_driver);
}
module_exit(snd_mfld_driver_exit);
MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver");
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:msic-audio");
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