arch/arm/mach-msm/board-mahimahi-keypad.c - kernel/msm - Git at Google

 /* arch/arm/mach-msm/board-mahimahi-keypad.c
  *
  * Copyright (C) 2009 Google, Inc
  * Copyright (C) 2009 HTC Corporation.
  *
  * Author: Dima Zavin <dima@android.com>
  *
  * 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/gpio_event.h>
 #include <linux/gpio.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/keyreset.h>
 #include <linux/platform_device.h>
 #include <mach/vreg.h>

 #include <asm/mach-types.h>

 #include "board-mahimahi.h"

 struct jog_axis_info {
 	struct gpio_event_axis_info	info;
 	uint16_t			in_state;
 	uint16_t			out_state;
 };

 static struct vreg *jog_vreg;
 static bool jog_just_on;
 static unsigned long jog_on_jiffies;

 static unsigned int mahimahi_col_gpios[] = { 33, 32, 31 };
 static unsigned int mahimahi_row_gpios[] = { 42, 41, 40 };

 #define KEYMAP_INDEX(col, row)	((col)*ARRAY_SIZE(mahimahi_row_gpios) + (row))
 #define KEYMAP_SIZE		(ARRAY_SIZE(mahimahi_col_gpios) * \
 				 ARRAY_SIZE(mahimahi_row_gpios))

 /* keypad */
 static const unsigned short mahimahi_keymap[KEYMAP_SIZE] = {
 	[KEYMAP_INDEX(0, 0)] = KEY_VOLUMEUP,
 	[KEYMAP_INDEX(0, 1)] = KEY_VOLUMEDOWN,
 	[KEYMAP_INDEX(1, 1)] = MATRIX_KEY(1, BTN_MOUSE),
 };

 static const unsigned short mahimahi_cdma_keymap[KEYMAP_SIZE] = {
 	[KEYMAP_INDEX(0, 0)] = KEY_VOLUMEUP,
 	[KEYMAP_INDEX(0, 1)] = KEY_VOLUMEDOWN,
 	[KEYMAP_INDEX(1, 1)] = MATRIX_KEY(1, BTN_MOUSE),

 	/* Key (2, 2) is not a physical key on mahimahi. The purpose of
 	 * registering the unused matrix key as a dummy <end> key is to make
 	 * userland able to send/receive the key event for some requested tests
 	 * in lab. of some CDMA carriers (e.g. Verizon).
 	 */
 	[KEYMAP_INDEX(2, 2)] = KEY_END,
 };

 static struct gpio_event_matrix_info mahimahi_keypad_matrix_info = {
 	.info.func = gpio_event_matrix_func,
 	.keymap = mahimahi_keymap,
 	.output_gpios = mahimahi_col_gpios,
 	.input_gpios = mahimahi_row_gpios,
 	.noutputs = ARRAY_SIZE(mahimahi_col_gpios),
 	.ninputs = ARRAY_SIZE(mahimahi_row_gpios),
 	.settle_time.tv.nsec = 40 * NSEC_PER_USEC,
 	.poll_time.tv.nsec = 20 * NSEC_PER_MSEC,
 	.flags = (GPIOKPF_LEVEL_TRIGGERED_IRQ |
 		  GPIOKPF_REMOVE_PHANTOM_KEYS |
 		  GPIOKPF_PRINT_UNMAPPED_KEYS),
 };

 static struct gpio_event_direct_entry mahimahi_keypad_key_map[] = {
 	{
 		.gpio	= MAHIMAHI_GPIO_POWER_KEY,
 		.code	= KEY_POWER,
 	},
 };

 static struct gpio_event_input_info mahimahi_keypad_key_info = {
 	.info.func = gpio_event_input_func,
 	.info.no_suspend = true,
 	.debounce_time.tv.nsec = 5 * NSEC_PER_MSEC,
 	.flags = 0,
 	.type = EV_KEY,
 	.keymap = mahimahi_keypad_key_map,
 	.keymap_size = ARRAY_SIZE(mahimahi_keypad_key_map)
 };

 /* jogball */
 static uint16_t jogball_axis_map(struct gpio_event_axis_info *info, uint16_t in)
 {
 	struct jog_axis_info *ai =
 		container_of(info, struct jog_axis_info, info);
 	uint16_t out = ai->out_state;

 	if (jog_just_on) {
 		if (jiffies == jog_on_jiffies || jiffies == jog_on_jiffies + 1)
 			goto ignore;
 		jog_just_on = 0;
 	}
 	if((ai->in_state ^ in) & 1)
 		out--;
 	if((ai->in_state ^ in) & 2)
 		out++;
 	ai->out_state = out;
 ignore:
 	ai->in_state = in;
 	return out;
 }

 static int jogball_power(const struct gpio_event_platform_data *pdata, bool on)
 {
 	if (on) {
 		vreg_enable(jog_vreg);
 		jog_just_on = 1;
 		jog_on_jiffies = jiffies;
 	} else {
 		vreg_disable(jog_vreg);
 	}

 	return 0;
 }

 static int jogball_power_cdma(const struct gpio_event_platform_data *pdata, bool on)
 {
 	if (on) {
 		gpio_set_value(MAHIMAHI_CDMA_JOG_2V6_EN, 1);
 		jog_just_on = 1;
 		jog_on_jiffies = jiffies;
 	} else {
 		gpio_set_value(MAHIMAHI_CDMA_JOG_2V6_EN, 0);
 	}

 	return 0;
 }

 static uint32_t jogball_x_gpios[] = {
 	MAHIMAHI_GPIO_BALL_LEFT, MAHIMAHI_GPIO_BALL_RIGHT,
 };
 static uint32_t jogball_y_gpios[] = {
 	MAHIMAHI_GPIO_BALL_UP, MAHIMAHI_GPIO_BALL_DOWN,
 };

 static struct jog_axis_info jogball_x_axis = {
 	.info = {
 		.info.func = gpio_event_axis_func,
 		.count = ARRAY_SIZE(jogball_x_gpios),
 		.dev = 1,
 		.type = EV_REL,
 		.code = REL_X,
 		.decoded_size = 1U << ARRAY_SIZE(jogball_x_gpios),
 		.map = jogball_axis_map,
 		.gpio = jogball_x_gpios,
 		.flags = GPIOEAF_PRINT_UNKNOWN_DIRECTION,
 	}
 };

 static struct jog_axis_info jogball_y_axis = {
 	.info = {
 		.info.func = gpio_event_axis_func,
 		.count = ARRAY_SIZE(jogball_y_gpios),
 		.dev = 1,
 		.type = EV_REL,
 		.code = REL_Y,
 		.decoded_size = 1U << ARRAY_SIZE(jogball_y_gpios),
 		.map = jogball_axis_map,
 		.gpio = jogball_y_gpios,
 		.flags = GPIOEAF_PRINT_UNKNOWN_DIRECTION,
 	}
 };

 static struct gpio_event_info *mahimahi_input_info[] = {
 	&mahimahi_keypad_matrix_info.info,
 	&mahimahi_keypad_key_info.info,
 	&jogball_x_axis.info.info,
 	&jogball_y_axis.info.info,
 };

 static struct gpio_event_platform_data mahimahi_input_data = {
 	.names = {
 		"mahimahi-keypad",
 		"mahimahi-nav",
 		NULL,
 	},
 	.info = mahimahi_input_info,
 	.info_count = ARRAY_SIZE(mahimahi_input_info),
 	.power = jogball_power,
 };

 static struct platform_device mahimahi_input_device = {
 	.name = GPIO_EVENT_DEV_NAME,
 	.id = 0,
 	.dev = {
 		.platform_data = &mahimahi_input_data,
 	},
 };

 static int mahimahi_reset_keys_up[] = {
 	KEY_VOLUMEUP,
 	0,
 };

 static struct keyreset_platform_data mahimahi_reset_keys_pdata = {
 	.keys_up	= mahimahi_reset_keys_up,
 	.keys_down	= {
 		KEY_POWER,
 		KEY_VOLUMEDOWN,
 		BTN_MOUSE,
 		0
 	},
 };

 struct platform_device mahimahi_reset_keys_device = {
 	.name	= KEYRESET_NAME,
 	.dev	= {
 		.platform_data = &mahimahi_reset_keys_pdata,
 	},
 };


 static int __init mahimahi_init_keypad_jogball(void)
 {
 	int ret;

 	if (!machine_is_mahimahi())
 		return 0;

 	ret = platform_device_register(&mahimahi_reset_keys_device);
 	if (ret != 0)
 		return ret;

 	if (is_cdma_version(system_rev)) {
 		mahimahi_keypad_matrix_info.keymap = mahimahi_cdma_keymap;
 		/* In the CDMA version, jogball power is supplied by a gpio. */
 		ret = gpio_request(MAHIMAHI_CDMA_JOG_2V6_EN, "jog_en");
 		if (ret < 0) {
 			pr_err("%s: gpio_request(%d) failed: %d\n", __func__,
 				MAHIMAHI_CDMA_JOG_2V6_EN, ret);
 			return ret;
 		}
 		mahimahi_input_data.power = jogball_power_cdma;
 	} else {
 		/* in UMTS version, jogball power is supplied by pmic */
 		jog_vreg = vreg_get(&mahimahi_input_device.dev, "gp2");
 		if (jog_vreg == NULL)
 			return -ENOENT;
 	}

 	ret = platform_device_register(&mahimahi_input_device);
 	if (ret != 0)
 		return ret;

 	return 0;
 }

 device_initcall(mahimahi_init_keypad_jogball);
	/* arch/arm/mach-msm/board-mahimahi-keypad.c
	*
	* Copyright (C) 2009 Google, Inc
	* Copyright (C) 2009 HTC Corporation.
	*
	* Author: Dima Zavin <dima@android.com>
	*
	* 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/gpio_event.h>
	#include <linux/gpio.h>
	#include <linux/input.h>
	#include <linux/interrupt.h>
	#include <linux/keyreset.h>
	#include <linux/platform_device.h>
	#include <mach/vreg.h>

	#include <asm/mach-types.h>

	#include "board-mahimahi.h"

	struct jog_axis_info {
	struct gpio_event_axis_info info;
	uint16_t in_state;
	uint16_t out_state;
	};

	static struct vreg *jog_vreg;
	static bool jog_just_on;
	static unsigned long jog_on_jiffies;

	static unsigned int mahimahi_col_gpios[] = { 33, 32, 31 };
	static unsigned int mahimahi_row_gpios[] = { 42, 41, 40 };

	#define KEYMAP_INDEX(col, row) ((col)*ARRAY_SIZE(mahimahi_row_gpios) + (row))
	#define KEYMAP_SIZE (ARRAY_SIZE(mahimahi_col_gpios) * \
	ARRAY_SIZE(mahimahi_row_gpios))

	/* keypad */
	static const unsigned short mahimahi_keymap[KEYMAP_SIZE] = {
	[KEYMAP_INDEX(0, 0)] = KEY_VOLUMEUP,
	[KEYMAP_INDEX(0, 1)] = KEY_VOLUMEDOWN,
	[KEYMAP_INDEX(1, 1)] = MATRIX_KEY(1, BTN_MOUSE),
	};

	static const unsigned short mahimahi_cdma_keymap[KEYMAP_SIZE] = {
	[KEYMAP_INDEX(0, 0)] = KEY_VOLUMEUP,
	[KEYMAP_INDEX(0, 1)] = KEY_VOLUMEDOWN,
	[KEYMAP_INDEX(1, 1)] = MATRIX_KEY(1, BTN_MOUSE),

	/* Key (2, 2) is not a physical key on mahimahi. The purpose of
	* registering the unused matrix key as a dummy <end> key is to make
	* userland able to send/receive the key event for some requested tests
	* in lab. of some CDMA carriers (e.g. Verizon).
	*/
	[KEYMAP_INDEX(2, 2)] = KEY_END,
	};

	static struct gpio_event_matrix_info mahimahi_keypad_matrix_info = {
	.info.func = gpio_event_matrix_func,
	.keymap = mahimahi_keymap,
	.output_gpios = mahimahi_col_gpios,
	.input_gpios = mahimahi_row_gpios,
	.noutputs = ARRAY_SIZE(mahimahi_col_gpios),
	.ninputs = ARRAY_SIZE(mahimahi_row_gpios),
	.settle_time.tv.nsec = 40 * NSEC_PER_USEC,
	.poll_time.tv.nsec = 20 * NSEC_PER_MSEC,
	.flags = (GPIOKPF_LEVEL_TRIGGERED_IRQ \|
	GPIOKPF_REMOVE_PHANTOM_KEYS \|
	GPIOKPF_PRINT_UNMAPPED_KEYS),
	};

	static struct gpio_event_direct_entry mahimahi_keypad_key_map[] = {
	{
	.gpio = MAHIMAHI_GPIO_POWER_KEY,
	.code = KEY_POWER,
	},
	};

	static struct gpio_event_input_info mahimahi_keypad_key_info = {
	.info.func = gpio_event_input_func,
	.info.no_suspend = true,
	.debounce_time.tv.nsec = 5 * NSEC_PER_MSEC,
	.flags = 0,
	.type = EV_KEY,
	.keymap = mahimahi_keypad_key_map,
	.keymap_size = ARRAY_SIZE(mahimahi_keypad_key_map)
	};

	/* jogball */
	static uint16_t jogball_axis_map(struct gpio_event_axis_info *info, uint16_t in)
	{
	struct jog_axis_info *ai =
	container_of(info, struct jog_axis_info, info);
	uint16_t out = ai->out_state;

	if (jog_just_on) {
	if (jiffies == jog_on_jiffies \|\| jiffies == jog_on_jiffies + 1)
	goto ignore;
	jog_just_on = 0;
	}
	if((ai->in_state ^ in) & 1)
	out--;
	if((ai->in_state ^ in) & 2)
	out++;
	ai->out_state = out;
	ignore:
	ai->in_state = in;
	return out;
	}

	static int jogball_power(const struct gpio_event_platform_data *pdata, bool on)
	{
	if (on) {
	vreg_enable(jog_vreg);
	jog_just_on = 1;
	jog_on_jiffies = jiffies;
	} else {
	vreg_disable(jog_vreg);
	}

	return 0;
	}

	static int jogball_power_cdma(const struct gpio_event_platform_data *pdata, bool on)
	{
	if (on) {
	gpio_set_value(MAHIMAHI_CDMA_JOG_2V6_EN, 1);
	jog_just_on = 1;
	jog_on_jiffies = jiffies;
	} else {
	gpio_set_value(MAHIMAHI_CDMA_JOG_2V6_EN, 0);
	}

	return 0;
	}

	static uint32_t jogball_x_gpios[] = {
	MAHIMAHI_GPIO_BALL_LEFT, MAHIMAHI_GPIO_BALL_RIGHT,
	};
	static uint32_t jogball_y_gpios[] = {
	MAHIMAHI_GPIO_BALL_UP, MAHIMAHI_GPIO_BALL_DOWN,
	};

	static struct jog_axis_info jogball_x_axis = {
	.info = {
	.info.func = gpio_event_axis_func,
	.count = ARRAY_SIZE(jogball_x_gpios),
	.dev = 1,
	.type = EV_REL,
	.code = REL_X,
	.decoded_size = 1U << ARRAY_SIZE(jogball_x_gpios),
	.map = jogball_axis_map,
	.gpio = jogball_x_gpios,
	.flags = GPIOEAF_PRINT_UNKNOWN_DIRECTION,
	}
	};

	static struct jog_axis_info jogball_y_axis = {
	.info = {
	.info.func = gpio_event_axis_func,
	.count = ARRAY_SIZE(jogball_y_gpios),
	.dev = 1,
	.type = EV_REL,
	.code = REL_Y,
	.decoded_size = 1U << ARRAY_SIZE(jogball_y_gpios),
	.map = jogball_axis_map,
	.gpio = jogball_y_gpios,
	.flags = GPIOEAF_PRINT_UNKNOWN_DIRECTION,
	}
	};

	static struct gpio_event_info *mahimahi_input_info[] = {
	&mahimahi_keypad_matrix_info.info,
	&mahimahi_keypad_key_info.info,
	&jogball_x_axis.info.info,
	&jogball_y_axis.info.info,
	};

	static struct gpio_event_platform_data mahimahi_input_data = {
	.names = {
	"mahimahi-keypad",
	"mahimahi-nav",
	NULL,
	},
	.info = mahimahi_input_info,
	.info_count = ARRAY_SIZE(mahimahi_input_info),
	.power = jogball_power,
	};

	static struct platform_device mahimahi_input_device = {
	.name = GPIO_EVENT_DEV_NAME,
	.id = 0,
	.dev = {
	.platform_data = &mahimahi_input_data,
	},
	};

	static int mahimahi_reset_keys_up[] = {
	KEY_VOLUMEUP,
	0,
	};

	static struct keyreset_platform_data mahimahi_reset_keys_pdata = {
	.keys_up = mahimahi_reset_keys_up,
	.keys_down = {
	KEY_POWER,
	KEY_VOLUMEDOWN,
	BTN_MOUSE,
	0
	},
	};

	struct platform_device mahimahi_reset_keys_device = {
	.name = KEYRESET_NAME,
	.dev = {
	.platform_data = &mahimahi_reset_keys_pdata,
	},
	};


	static int __init mahimahi_init_keypad_jogball(void)
	{
	int ret;

	if (!machine_is_mahimahi())
	return 0;

	ret = platform_device_register(&mahimahi_reset_keys_device);
	if (ret != 0)
	return ret;

	if (is_cdma_version(system_rev)) {
	mahimahi_keypad_matrix_info.keymap = mahimahi_cdma_keymap;
	/* In the CDMA version, jogball power is supplied by a gpio. */
	ret = gpio_request(MAHIMAHI_CDMA_JOG_2V6_EN, "jog_en");
	if (ret < 0) {
	pr_err("%s: gpio_request(%d) failed: %d\n", __func__,
	MAHIMAHI_CDMA_JOG_2V6_EN, ret);
	return ret;
	}
	mahimahi_input_data.power = jogball_power_cdma;
	} else {
	/* in UMTS version, jogball power is supplied by pmic */
	jog_vreg = vreg_get(&mahimahi_input_device.dev, "gp2");
	if (jog_vreg == NULL)
	return -ENOENT;
	}

	ret = platform_device_register(&mahimahi_input_device);
	if (ret != 0)
	return ret;

	return 0;
	}

	device_initcall(mahimahi_init_keypad_jogball);