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/* arch/arm/mach-exynos/p4note-jack.c
*
* Copyright (C) 2012 Samsung Electronics Co, Ltd
*
* Based on mach-exynos/mach-p4notepq.c
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
#include <mach/gpio-midas.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/sec_jack.h>
static void sec_set_jack_micbias(bool on)
{
gpio_set_value(GPIO_EAR_MIC_BIAS_EN, on);
}
static struct sec_jack_zone sec_jack_zones[] = {
{
/* adc == 0, unstable zone, default to 3pole if it stays
* in this range for 300ms (15ms delays, 20 samples)
*/
.adc_high = 0,
.delay_ms = 15,
.check_count = 20,
.jack_type = SEC_HEADSET_3POLE,
},
{
/* 0 < adc <= 1200, unstable zone, default to 3pole if it stays
* in this range for 300ms (15ms delays, 20 samples)
*/
.adc_high = 1200,
.delay_ms = 10,
.check_count = 80,
.jack_type = SEC_HEADSET_3POLE,
},
{
/* 1200 < adc <= 2600, unstable zone, default to 4pole if it
* stays in this range for 800ms (10ms delays, 80 samples)
*/
.adc_high = 2600,
.delay_ms = 10,
.check_count = 10,
.jack_type = SEC_HEADSET_4POLE,
},
{
/* 2600 < adc <= 3800, 3 pole zone, default to 3pole if it
* stays in this range for 100ms (10ms delays, 10 samples)
*/
.adc_high = 3800,
.delay_ms = 10,
.check_count = 5,
.jack_type = SEC_HEADSET_4POLE,
},
{
/* adc > 3800, unstable zone, default to 3pole if it stays
* in this range for two seconds (10ms delays, 200 samples)
*/
.adc_high = 0x7fffffff,
.delay_ms = 10,
.check_count = 200,
.jack_type = SEC_HEADSET_3POLE,
},
};
/* To support 3-buttons earjack */
static struct sec_jack_buttons_zone sec_jack_buttons_zones[] = {
{
/* 0 <= adc <=190, stable zone */
.code = KEY_MEDIA,
.adc_low = 0,
.adc_high = 190,
},
{
/* 191 <= adc <= 420, stable zone */
.code = KEY_VOLUMEUP,
.adc_low = 191,
.adc_high = 420,
},
{
/* 421 <= adc <= 860, stable zone */
.code = KEY_VOLUMEDOWN,
.adc_low = 421,
.adc_high = 860,
},
};
static struct sec_jack_platform_data sec_jack_data = {
.set_micbias_state = sec_set_jack_micbias,
.zones = sec_jack_zones,
.num_zones = ARRAY_SIZE(sec_jack_zones),
.buttons_zones = sec_jack_buttons_zones,
.num_buttons_zones = ARRAY_SIZE(sec_jack_buttons_zones),
.det_gpio = GPIO_DET_35,
.send_end_gpio = GPIO_EAR_SEND_END,
};
static struct platform_device sec_device_jack = {
.name = "sec_jack",
.id = 1, /* will be used also for gpio_event id */
.dev.platform_data = &sec_jack_data,
};
void __init p4note_jack_init(void)
{
/* Ear Microphone BIAS */
int err;
err = gpio_request(GPIO_EAR_MIC_BIAS_EN, "EAR MIC");
if (err) {
pr_err(KERN_ERR "GPIO_EAR_MIC_BIAS_EN GPIO set error!\n");
return;
}
gpio_direction_output(GPIO_EAR_MIC_BIAS_EN, 1);
gpio_set_value(GPIO_EAR_MIC_BIAS_EN, 0);
gpio_free(GPIO_EAR_MIC_BIAS_EN);
platform_device_register(&sec_device_jack);
}
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