1 files changed, 126 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/p4note-jack.c b/arch/arm/mach-exynos/p4note-jack.c
new file mode 100644
index 0000000..2a4d0df
--- /dev/null
+++ b/arch/arm/mach-exynos/p4note-jack.c
@@ -0,0 +1,126 @@
+/* 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);
+}