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////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2006-2014 MStar Semiconductor, Inc.
// All rights reserved.
//
// Unless otherwise stipulated in writing, any and all information contained
// herein regardless in any format shall remain the sole proprietary of
// MStar Semiconductor Inc. and be kept in strict confidence
// (??MStar Confidential Information??) by the recipient.
// Any unauthorized act including without limitation unauthorized disclosure,
// copying, use, reproduction, sale, distribution, modification, disassembling,
// reverse engineering and compiling of the contents of MStar Confidential
// Information is unlawful and strictly prohibited. MStar hereby reserves the
// rights to any and all damages, losses, costs and expenses resulting therefrom.
//
////////////////////////////////////////////////////////////////////////////////
/**
*
* @file mstar_drv_qcom.c
*
* @brief This file defines the interface of touch screen
*
*
*/
/*=============================================================*/
// INCLUDE FILE
/*=============================================================*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/kobject.h>
#include <asm/irq.h>
#include <asm/io.h>
#include "mstar_drv_platform_interface.h"
#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
#include <linux/regulator/consumer.h>
#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
/*=============================================================*/
// CONSTANT VALUE DEFINITION
/*=============================================================*/
#define MSG_TP_IC_NAME "msg2xxx" //"msg21xxA" or "msg22xx" or "msg26xxM" /* Please define the mstar touch ic name based on the mutual-capacitive ic or self capacitive ic that you are using */
/*=============================================================*/
// VARIABLE DEFINITION
/*=============================================================*/
struct i2c_client *g_I2cClient = NULL;
#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
struct regulator *g_ReguVdd = NULL;
#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
/*=============================================================*/
// FUNCTION DEFINITION
/*=============================================================*/
/* probe function is used for matching and initializing input device */
static int __devinit touch_driver_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
const char *vdd_name = "vdd";
#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
DBG("*** %s ***\n", __FUNCTION__);
if (client == NULL)
{
DBG("i2c client is NULL\n");
return -1;
}
g_I2cClient = client;
#ifdef CONFIG_ENABLE_REGULATOR_POWER_ON
g_ReguVdd = regulator_get(&g_I2cClient->dev, vdd_name);
#endif //CONFIG_ENABLE_REGULATOR_POWER_ON
return MsDrvInterfaceTouchDeviceProbe(g_I2cClient, id);
}
/* remove function is triggered when the input device is removed from input sub-system */
static int touch_driver_remove(struct i2c_client *client)
{
DBG("*** %s ***\n", __FUNCTION__);
return MsDrvInterfaceTouchDeviceRemove(client);
}
/* The I2C device list is used for matching I2C device and I2C device driver. */
static const struct i2c_device_id touch_device_id[] =
{
{MSG_TP_IC_NAME, 0},
{}, /* should not omitted */
};
MODULE_DEVICE_TABLE(i2c, touch_device_id);
static struct of_device_id touch_match_table[] = {
{ .compatible = "mstar,msg2xxx",},
{},
};
static struct i2c_driver touch_device_driver =
{
.driver = {
.name = MSG_TP_IC_NAME,
.owner = THIS_MODULE,
.of_match_table = touch_match_table,
},
.probe = touch_driver_probe,
.remove = touch_driver_remove,
.id_table = touch_device_id,
};
static int __init touch_driver_init(void)
{
int ret;
/* register driver */
ret = i2c_add_driver(&touch_device_driver);
if (ret < 0)
{
DBG("add touch device driver i2c driver failed.\n");
return -ENODEV;
}
DBG("add touch device driver i2c driver.\n");
return ret;
}
static void __exit touch_driver_exit(void)
{
DBG("remove touch device driver i2c driver.\n");
i2c_del_driver(&touch_device_driver);
}
module_init(touch_driver_init);
module_exit(touch_driver_exit);
MODULE_LICENSE("GPL");
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