forked from Minki/linux
Input: mcs - Add MCS touchkey driver
This adds support for MELPAS MCS5000/MSC5080 touch key controllers. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Joonyoung Shim
Dmitry Torokhov
parent
866d7d7b4a
commit
312e8e8a9e
@ -297,6 +297,18 @@ config KEYBOARD_MAX7359
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called max7359_keypad.
|
||||
|
||||
config KEYBOARD_MCS
|
||||
tristate "MELFAS MCS Touchkey"
|
||||
depends on I2C
|
||||
help
|
||||
Say Y here if you have the MELFAS MCS5000/5080 touchkey controller
|
||||
chip in your system.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called mcs_touchkey.
|
||||
|
||||
config KEYBOARD_IMX
|
||||
tristate "IMX keypad support"
|
||||
depends on ARCH_MXC
|
||||
|
||||
@ -26,6 +26,7 @@ obj-$(CONFIG_KEYBOARD_LOCOMO) += locomokbd.o
|
||||
obj-$(CONFIG_KEYBOARD_MAPLE) += maple_keyb.o
|
||||
obj-$(CONFIG_KEYBOARD_MATRIX) += matrix_keypad.o
|
||||
obj-$(CONFIG_KEYBOARD_MAX7359) += max7359_keypad.o
|
||||
obj-$(CONFIG_KEYBOARD_MCS) += mcs_touchkey.o
|
||||
obj-$(CONFIG_KEYBOARD_NEWTON) += newtonkbd.o
|
||||
obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o
|
||||
obj-$(CONFIG_KEYBOARD_OPENCORES) += opencores-kbd.o
|
||||
|
||||
239
drivers/input/keyboard/mcs_touchkey.c
Normal file
239
drivers/input/keyboard/mcs_touchkey.c
Normal file
@ -0,0 +1,239 @@
|
||||
/*
|
||||
* mcs_touchkey.c - Touchkey driver for MELFAS MCS5000/5080 controller
|
||||
*
|
||||
* Copyright (C) 2010 Samsung Electronics Co.Ltd
|
||||
* Author: HeungJun Kim <riverful.kim@samsung.com>
|
||||
* Author: Joonyoung Shim <jy0922.shim@samsung.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; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/i2c/mcs.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
/* MCS5000 Touchkey */
|
||||
#define MCS5000_TOUCHKEY_STATUS 0x04
|
||||
#define MCS5000_TOUCHKEY_STATUS_PRESS 7
|
||||
#define MCS5000_TOUCHKEY_FW 0x0a
|
||||
#define MCS5000_TOUCHKEY_BASE_VAL 0x61
|
||||
|
||||
/* MCS5080 Touchkey */
|
||||
#define MCS5080_TOUCHKEY_STATUS 0x00
|
||||
#define MCS5080_TOUCHKEY_STATUS_PRESS 3
|
||||
#define MCS5080_TOUCHKEY_FW 0x01
|
||||
#define MCS5080_TOUCHKEY_BASE_VAL 0x1
|
||||
|
||||
enum mcs_touchkey_type {
|
||||
MCS5000_TOUCHKEY,
|
||||
MCS5080_TOUCHKEY,
|
||||
};
|
||||
|
||||
struct mcs_touchkey_chip {
|
||||
unsigned int status_reg;
|
||||
unsigned int pressbit;
|
||||
unsigned int press_invert;
|
||||
unsigned int baseval;
|
||||
};
|
||||
|
||||
struct mcs_touchkey_data {
|
||||
struct i2c_client *client;
|
||||
struct input_dev *input_dev;
|
||||
struct mcs_touchkey_chip chip;
|
||||
unsigned int key_code;
|
||||
unsigned int key_val;
|
||||
unsigned short keycodes[];
|
||||
};
|
||||
|
||||
static irqreturn_t mcs_touchkey_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
struct mcs_touchkey_data *data = dev_id;
|
||||
struct mcs_touchkey_chip *chip = &data->chip;
|
||||
struct i2c_client *client = data->client;
|
||||
struct input_dev *input = data->input_dev;
|
||||
unsigned int key_val;
|
||||
unsigned int pressed;
|
||||
int val;
|
||||
|
||||
val = i2c_smbus_read_byte_data(client, chip->status_reg);
|
||||
if (val < 0) {
|
||||
dev_err(&client->dev, "i2c read error [%d]\n", val);
|
||||
goto out;
|
||||
}
|
||||
|
||||
pressed = (val & (1 << chip->pressbit)) >> chip->pressbit;
|
||||
if (chip->press_invert)
|
||||
pressed ^= chip->press_invert;
|
||||
|
||||
/* key_val is 0 when released, so we should use key_val of press. */
|
||||
if (pressed) {
|
||||
key_val = val & (0xff >> (8 - chip->pressbit));
|
||||
if (!key_val)
|
||||
goto out;
|
||||
key_val -= chip->baseval;
|
||||
data->key_code = data->keycodes[key_val];
|
||||
data->key_val = key_val;
|
||||
}
|
||||
|
||||
input_event(input, EV_MSC, MSC_SCAN, data->key_val);
|
||||
input_report_key(input, data->key_code, pressed);
|
||||
input_sync(input);
|
||||
|
||||
dev_dbg(&client->dev, "key %d %d %s\n", data->key_val, data->key_code,
|
||||
pressed ? "pressed" : "released");
|
||||
|
||||
out:
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int __devinit mcs_touchkey_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
const struct mcs_platform_data *pdata;
|
||||
struct mcs_touchkey_data *data;
|
||||
struct input_dev *input_dev;
|
||||
unsigned int fw_reg;
|
||||
int fw_ver;
|
||||
int error;
|
||||
int i;
|
||||
|
||||
pdata = client->dev.platform_data;
|
||||
if (!pdata) {
|
||||
dev_err(&client->dev, "no platform data defined\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
data = kzalloc(sizeof(struct mcs_touchkey_data) +
|
||||
sizeof(data->keycodes[0]) * (pdata->key_maxval + 1),
|
||||
GFP_KERNEL);
|
||||
input_dev = input_allocate_device();
|
||||
if (!data || !input_dev) {
|
||||
dev_err(&client->dev, "Failed to allocate memory\n");
|
||||
error = -ENOMEM;
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
data->client = client;
|
||||
data->input_dev = input_dev;
|
||||
|
||||
if (id->driver_data == MCS5000_TOUCHKEY) {
|
||||
data->chip.status_reg = MCS5000_TOUCHKEY_STATUS;
|
||||
data->chip.pressbit = MCS5000_TOUCHKEY_STATUS_PRESS;
|
||||
data->chip.baseval = MCS5000_TOUCHKEY_BASE_VAL;
|
||||
fw_reg = MCS5000_TOUCHKEY_FW;
|
||||
} else {
|
||||
data->chip.status_reg = MCS5080_TOUCHKEY_STATUS;
|
||||
data->chip.pressbit = MCS5080_TOUCHKEY_STATUS_PRESS;
|
||||
data->chip.press_invert = 1;
|
||||
data->chip.baseval = MCS5080_TOUCHKEY_BASE_VAL;
|
||||
fw_reg = MCS5080_TOUCHKEY_FW;
|
||||
}
|
||||
|
||||
fw_ver = i2c_smbus_read_byte_data(client, fw_reg);
|
||||
if (fw_ver < 0) {
|
||||
error = fw_ver;
|
||||
dev_err(&client->dev, "i2c read error[%d]\n", error);
|
||||
goto err_free_mem;
|
||||
}
|
||||
dev_info(&client->dev, "Firmware version: %d\n", fw_ver);
|
||||
|
||||
input_dev->name = "MELPAS MCS Touchkey";
|
||||
input_dev->id.bustype = BUS_I2C;
|
||||
input_dev->dev.parent = &client->dev;
|
||||
input_dev->evbit[0] = BIT_MASK(EV_KEY);
|
||||
if (!pdata->no_autorepeat)
|
||||
input_dev->evbit[0] |= BIT_MASK(EV_REP);
|
||||
input_dev->keycode = data->keycodes;
|
||||
input_dev->keycodesize = sizeof(data->keycodes[0]);
|
||||
input_dev->keycodemax = pdata->key_maxval + 1;
|
||||
|
||||
for (i = 0; i < pdata->keymap_size; i++) {
|
||||
unsigned int val = MCS_KEY_VAL(pdata->keymap[i]);
|
||||
unsigned int code = MCS_KEY_CODE(pdata->keymap[i]);
|
||||
|
||||
data->keycodes[val] = code;
|
||||
__set_bit(code, input_dev->keybit);
|
||||
}
|
||||
|
||||
input_set_capability(input_dev, EV_MSC, MSC_SCAN);
|
||||
input_set_drvdata(input_dev, data);
|
||||
|
||||
if (pdata->cfg_pin)
|
||||
pdata->cfg_pin();
|
||||
|
||||
error = request_threaded_irq(client->irq, NULL, mcs_touchkey_interrupt,
|
||||
IRQF_TRIGGER_FALLING, client->dev.driver->name, data);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "Failed to register interrupt\n");
|
||||
goto err_free_mem;
|
||||
}
|
||||
|
||||
error = input_register_device(input_dev);
|
||||
if (error)
|
||||
goto err_free_irq;
|
||||
|
||||
i2c_set_clientdata(client, data);
|
||||
return 0;
|
||||
|
||||
err_free_irq:
|
||||
free_irq(client->irq, data);
|
||||
err_free_mem:
|
||||
input_free_device(input_dev);
|
||||
kfree(data);
|
||||
return error;
|
||||
}
|
||||
|
||||
static int __devexit mcs_touchkey_remove(struct i2c_client *client)
|
||||
{
|
||||
struct mcs_touchkey_data *data = i2c_get_clientdata(client);
|
||||
|
||||
free_irq(client->irq, data);
|
||||
input_unregister_device(data->input_dev);
|
||||
kfree(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id mcs_touchkey_id[] = {
|
||||
{ "mcs5000_touchkey", MCS5000_TOUCHKEY },
|
||||
{ "mcs5080_touchkey", MCS5080_TOUCHKEY },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, mcs_touchkey_id);
|
||||
|
||||
static struct i2c_driver mcs_touchkey_driver = {
|
||||
.driver = {
|
||||
.name = "mcs_touchkey",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = mcs_touchkey_probe,
|
||||
.remove = __devexit_p(mcs_touchkey_remove),
|
||||
.id_table = mcs_touchkey_id,
|
||||
};
|
||||
|
||||
static int __init mcs_touchkey_init(void)
|
||||
{
|
||||
return i2c_add_driver(&mcs_touchkey_driver);
|
||||
}
|
||||
|
||||
static void __exit mcs_touchkey_exit(void)
|
||||
{
|
||||
i2c_del_driver(&mcs_touchkey_driver);
|
||||
}
|
||||
|
||||
module_init(mcs_touchkey_init);
|
||||
module_exit(mcs_touchkey_exit);
|
||||
|
||||
/* Module information */
|
||||
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
|
||||
MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>");
|
||||
MODULE_DESCRIPTION("Touchkey driver for MELFAS MCS5000/5080 controller");
|
||||
MODULE_LICENSE("GPL");
|
||||
@ -16,7 +16,7 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/i2c/mcs5000_ts.h>
|
||||
#include <linux/i2c/mcs.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/irq.h>
|
||||
@ -105,7 +105,7 @@ enum mcs5000_ts_read_offset {
|
||||
struct mcs5000_ts_data {
|
||||
struct i2c_client *client;
|
||||
struct input_dev *input_dev;
|
||||
const struct mcs5000_ts_platform_data *platform_data;
|
||||
const struct mcs_platform_data *platform_data;
|
||||
};
|
||||
|
||||
static irqreturn_t mcs5000_ts_interrupt(int irq, void *dev_id)
|
||||
@ -164,7 +164,7 @@ static irqreturn_t mcs5000_ts_interrupt(int irq, void *dev_id)
|
||||
|
||||
static void mcs5000_ts_phys_init(struct mcs5000_ts_data *data)
|
||||
{
|
||||
const struct mcs5000_ts_platform_data *platform_data =
|
||||
const struct mcs_platform_data *platform_data =
|
||||
data->platform_data;
|
||||
struct i2c_client *client = data->client;
|
||||
|
||||
|
||||
34
include/linux/i2c/mcs.h
Normal file
34
include/linux/i2c/mcs.h
Normal file
@ -0,0 +1,34 @@
|
||||
/*
|
||||
* Copyright (C) 2009 - 2010 Samsung Electronics Co.Ltd
|
||||
* Author: Joonyoung Shim <jy0922.shim@samsung.com>
|
||||
* Author: HeungJun Kim <riverful.kim@samsung.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; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_MCS_H
|
||||
#define __LINUX_MCS_H
|
||||
|
||||
#define MCS_KEY_MAP(v, c) ((((v) & 0xff) << 16) | ((c) & 0xffff))
|
||||
#define MCS_KEY_VAL(v) (((v) >> 16) & 0xff)
|
||||
#define MCS_KEY_CODE(v) ((v) & 0xffff)
|
||||
|
||||
struct mcs_platform_data {
|
||||
void (*cfg_pin)(void);
|
||||
|
||||
/* touchscreen */
|
||||
unsigned int x_size;
|
||||
unsigned int y_size;
|
||||
|
||||
/* touchkey */
|
||||
const u32 *keymap;
|
||||
unsigned int keymap_size;
|
||||
unsigned int key_maxval;
|
||||
bool no_autorepeat;
|
||||
};
|
||||
|
||||
#endif /* __LINUX_MCS_H */
|
||||
@ -1,24 +0,0 @@
|
||||
/*
|
||||
* mcs5000_ts.h
|
||||
*
|
||||
* Copyright (C) 2009 Samsung Electronics Co.Ltd
|
||||
* Author: Joonyoung Shim <jy0922.shim@samsung.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; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_MCS5000_TS_H
|
||||
#define __LINUX_MCS5000_TS_H
|
||||
|
||||
/* platform data for the MELFAS MCS-5000 touchscreen driver */
|
||||
struct mcs5000_ts_platform_data {
|
||||
void (*cfg_pin)(void);
|
||||
int x_size;
|
||||
int y_size;
|
||||
};
|
||||
|
||||
#endif /* __LINUX_MCS5000_TS_H */
|
||||
Loading…
Reference in New Issue
Block a user