ARM: omap4: tuna: add SEC Jack platform data

This introduces a new board-tuna-jack file that configures
the platform to use the sec_jack driver for wired accessory
detection.

Signed-off-by: Chris Kelly <c-kelly@ti.com>

4 files changed, 155 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index be6213e..7f9b7ac 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -254,6 +254,7 @@ obj-$(CONFIG_MACH_TUNA)			+= board-tuna.o \
 					   omap_phy_internal.o
 obj-$(CONFIG_MACH_TUNA)			+= board-tuna-display.o
 obj-$(CONFIG_MACH_TUNA)			+= board-tuna-input.o
+obj-$(CONFIG_MACH_TUNA)			+= board-tuna-jack.o
 obj-$(CONFIG_MACH_TUNA)			+= board-tuna-nfc.o
 obj-$(CONFIG_MACH_TUNA)			+= board-tuna-power.o
 obj-$(CONFIG_MACH_TUNA)			+= board-tuna-sensors.o
diff --git a/arch/arm/mach-omap2/board-tuna-jack.c b/arch/arm/mach-omap2/board-tuna-jack.c
new file mode 100644
index 0000000..43353d9
--- /dev/null
+++ b/arch/arm/mach-omap2/board-tuna-jack.c
@@ -0,0 +1,152 @@
+/* Board support file for Samsung Tuna Board.
+ *
+ * Copyright (C) 2011 Google, Inc.
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * Based on mach-omap2/board-omap4panda.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 <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/i2c/twl6030-madc.h>
+#include <linux/sec_jack.h>
+
+#include "mux.h"
+#include "board-tuna.h"
+
+#define GPIO_EAR_MICBIAS_EN	49
+#define GPIO_DET_35		0
+#define GPIO_EAR_SEND_END	1
+
+#define ADC_CHANNEL_JACK	2
+
+static void sec_jack_set_micbias_state(bool on)
+{
+	gpio_set_value(GPIO_EAR_MICBIAS_EN, on);
+}
+
+static struct sec_jack_zone sec_jack_zones[] = {
+	{
+		/* adc < 50, unstable zone, default to 3pole if it stays
+		* in this range for a half second (20ms delays, 25 samples)
+		*/
+		.adc_high = 50,
+		.delay_ms = 20,
+		.check_count = 25,
+		.jack_type = SEC_HEADSET_3POLE,
+	},
+	{
+		/* 50 < adc <= 450, unstable zone, default to 3pole if it stays
+		* in this range for a second (10ms delays, 100 samples)
+		*/
+		.adc_high = 450,
+		.delay_ms = 10,
+		.check_count = 100,
+		.jack_type = SEC_HEADSET_3POLE,
+	},
+	{
+		/* 450 < adc <= 900, unstable zone, default to 4pole if it
+		* stays in this range for a second (10ms delays, 100 samples)
+		*/
+		.adc_high = 900,
+		.delay_ms = 10,
+		.check_count = 100,
+		.jack_type = SEC_HEADSET_4POLE,
+	},
+	{
+		/* 900 < adc <= 1500, 4 pole zone, default to 4pole if it
+		* stays in this range for 200ms (20ms delays, 10 samples)
+		*/
+		.adc_high = 1500,
+		.delay_ms = 20,
+		.check_count = 10,
+		.jack_type = SEC_HEADSET_4POLE,
+	},
+	{
+		/* adc > 1500, unstable zone, default to 3pole if it stays
+		* in this range for a second (10ms delays, 100 samples)
+		*/
+		.adc_high = 0x7fffffff,
+		.delay_ms = 10,
+		.check_count = 100,
+		.jack_type = SEC_HEADSET_3POLE,
+	},
+};
+
+/* To support 3-buttons earjack */
+static struct sec_jack_buttons_zone sec_jack_buttons_zones[] = {
+	{
+		/* 0 <= adc <= 93, stable zone */
+		.code           = KEY_MEDIA,
+		.adc_low        = 0,
+		.adc_high       = 93,
+	},
+	{
+		/* 94 <= adc <= 215, stable zone */
+		.code           = KEY_PREVIOUSSONG,
+		.adc_low        = 94,
+		.adc_high       = 215,
+	},
+	{
+		/* 216 <= adc <= 450, stable zone */
+		.code           = KEY_NEXTSONG,
+		.adc_low        = 216,
+		.adc_high       = 450,
+	},
+};
+
+static int sec_jack_get_adc_value(void)
+{
+	int value;
+
+	value =  twl6030_get_madc_conversion(ADC_CHANNEL_JACK);
+	return (int)(1800*value) / 1024;
+}
+
+struct sec_jack_platform_data sec_jack_pdata = {
+	.set_micbias_state = sec_jack_set_micbias_state,
+	.get_adc_value = sec_jack_get_adc_value,
+	.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_pdata,
+};
+
+void __init omap4_tuna_jack_init(void)
+{
+	omap_mux_init_signal("sim_io.gpio_wk0", OMAP_PIN_INPUT);
+	gpio_request(GPIO_DET_35, "det_35_en");
+	gpio_direction_input(GPIO_DET_35);
+
+	omap_mux_init_signal("sim_clk.gpio_wk1", OMAP_PIN_INPUT);
+	gpio_request(GPIO_EAR_SEND_END, "ear_send_end");
+	gpio_direction_input(GPIO_EAR_SEND_END);
+
+	omap_mux_init_signal("gpmc_a25.gpio_49", OMAP_PIN_OUTPUT | OMAP_MUX_MODE3);
+	gpio_request(GPIO_EAR_MICBIAS_EN, "ear_micbias_en");
+	gpio_direction_output(GPIO_EAR_MICBIAS_EN, 0);
+
+	gpio_free(GPIO_DET_35);
+	gpio_free(GPIO_EAR_SEND_END);
+	platform_device_register(&sec_device_jack);
+}
diff --git a/arch/arm/mach-omap2/board-tuna.c b/arch/arm/mach-omap2/board-tuna.c
index b5f20e8..a814451 100755
--- a/arch/arm/mach-omap2/board-tuna.c
+++ b/arch/arm/mach-omap2/board-tuna.c
@@ -844,6 +844,7 @@ static void __init tuna_init(void)
 	omap4_tuna_input_init();
 	omap4_tuna_nfc_init();
 	omap4_tuna_power_init();
+	omap4_tuna_jack_init();
 	omap4_tuna_sensors_init();
 #ifdef CONFIG_OMAP_HSI_DEVICE
 	if (TUNA_TYPE_MAGURO == omap4_tuna_get_type())
diff --git a/arch/arm/mach-omap2/board-tuna.h b/arch/arm/mach-omap2/board-tuna.h
index f1e604a..933b9e6 100644
--- a/arch/arm/mach-omap2/board-tuna.h
+++ b/arch/arm/mach-omap2/board-tuna.h
@@ -27,6 +27,7 @@ int omap4_tuna_get_type(void);
 bool omap4_tuna_final_gpios(void);
 void omap4_tuna_display_init(void);
 void omap4_tuna_input_init(void);
+void omap4_tuna_jack_init(void);
 void omap4_tuna_nfc_init(void);
 void omap4_tuna_power_init(void);
 void omap4_tuna_sensors_init(void);