敦泰ft5x0x触摸屏驱动程序，支持单点触摸和多点触摸，其中单点触摸支持tslib程序，目前已经在项目中使用

/* * drivers/input/touchscreen/ft5x0x_ts.c * * FocalTech ft5x0x TouchScreen driver. * * Copyright (c) 2010 Focal tech Ltd. * * 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. * * * note: only support mulititouch Wenfs 2010-10-01 */ #include <linux/irq.h> #include <linux/kernel.h> #include <linux/hrtimer.h> #include <linux/i2c.h> #include <linux/input.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/proc_fs.h> #include <linux/string.h> #include <asm/uaccess.h> #include <linux/vmalloc.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/gpio.h> #ifdef CONFIG_OF #include <linux/of_gpio.h> #include <linux/regulator/consumer.h> #endif #ifdef CONFIG_FB #include <linux/notifier.h> #include <linux/fb.h> #endif #ifdef CONFIG_HAS_EARLYSUSPEND #include <linux/earlysuspend.h> #endif #include <linux/i2c.h> #include <linux/input.h> //#include <linux/ft5x0x_ts.h> #include "ft5x0x_ts.h" //#include <linux/earlysuspend.h> #include <linux/interrupt.h> #include <linux/delay.h> #ifdef CONFIG_HAS_EARLYSUSPEND #include <linux/earlysuspend.h> #endif //#include <asm/jzsoc.h> #define GPIO_TO_PIN(bank, gpio) (32 * (bank) + (gpio)) #define GTP_RST_PORT GPIO_TO_PIN(1, 24) #define GTP_INT_PORT GPIO_TO_PIN(3, 20) #define GTP_INT_IRQ gpio_to_irq(GTP_INT_PORT) static struct i2c_client *this_client; static struct ft5x0x_ts_platform_data *pdata; //#define CONFIG_FT5X0X_MULTITOUCH 0 struct ts_event { u16 x1; u16 y1; u16 x2; u16 y2; u16 x3; u16 y3; u16 x4; u16 y4; u16 x5; u16 y5; u16 pressure; u8 touch_point; }; struct ft5x0x_ts_data { struct input_dev *input_dev; struct ts_event event; struct work_struct pen_event_work; struct workqueue_struct *ts_workqueue; // struct early_suspend early_suspend; #if defined(CONFIG_FB) struct notifier_block notifier; #elif defined(CONFIG_HAS_EARLYSUSPEND) struct early_suspend early_suspend; #endif }; static int ft5x0x_i2c_rxdata(char *rxdata, int length) { printk("start enter ft5x0x_i2c_rxdata--\n"); int ret; struct i2c_msg msgs[] = { { .addr = this_client->addr, .flags = 0, .len = 1, .buf = rxdata, }, { .addr = this_client->addr, .flags = I2C_M_RD, .len = length, .buf = rxdata, }, }; //msleep(1); ret = i2c_transfer(this_client->adapter, msgs, 2); if (ret < 0) printk("msg %s i2c read error: %d\n", __func__, ret); return ret; } static int ft5x0x_i2c_txdata(char *txdata, int length) { printk("start enter ft5x0x_i2c_txdata--\n"); int ret; struct i2c_msg msg[] = { { .addr = this_client->addr, .flags = 0, .len = length, .buf = txdata, }, }; //msleep(1); ret = i2c_transfer(this_client->adapter, msg, 1); if (ret < 0) printk("%s i2c write error: %d\n", __func__, ret); return ret; } static int ft5x0x_set_reg(u8 addr, u8 para) { printk("start enter ft5x0x_set_reg--\n"); u8 buf[3]; int ret = -1; buf[0] = addr; buf[1] = para; ret = ft5x0x_i2c_txdata(buf, 2); if (ret < 0) { printk("write reg failed! %#x ret: %d", buf[0], ret); return -1; } return 0; } static void ft5x0x_ts_release(void) { printk("start enter ft5x0x_ts_release--\n"); struct ft5x0x_ts_data *data = i2c_get_clientdata(this_client); #ifdef CONFIG_FT5X0X_MULTITOUCH input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR, 0); #else printk("start enter ft5x0x_ts_release--now\n"); input_report_abs(data->input_dev, ABS_PRESSURE, 0); input_report_key(data->input_dev, BTN_TOUCH, 0); #endif input_sync(data->input_dev); } static int ft5x0x_read_data(void) { printk("start enter ft5x0x_read_data--\n"); struct ft5x0x_ts_data *data = i2c_get_clientdata(this_client); struct ts_event *event = &data->event; // u8 buf[14] = {0}; u8 buf[32] = {0}; int ret = -1; #ifdef CONFIG_FT5X0X_MULTITOUCH // ret = ft5x0x_i2c_rxdata(buf, 13); ret = ft5x0x_i2c_rxdata(buf, 31); #else ret = ft5x0x_i2c_rxdata(buf, 7); #endif if (ret < 0) { printk("%s read_data i2c_rxdata failed: %d\n", __func__, ret); return ret; } memset(event, 0, sizeof(struct ts_event)); // event->touch_point = buf[2] & 0x03;// 0000 0011 event->touch_point = buf[2] & 0x07;// 000 0111 if (event->touch_point == 0) { ft5x0x_ts_release(); return 1; } #ifdef CONFIG_FT5X0X_MULTITOUCH switch (event->touch_point) { case 5: event->x5 = (s16)(buf[0x1b] & 0x0F)<<8 | (s16)buf[0x1c]; event->y5 = (s16)(buf[0x1d] & 0x0F)<<8 | (s16)buf[0x1e]; case 4: event->x4 = (s16)(buf[0x15] & 0x0F)<<8 | (s16)buf[0x16]; event->y4 = (s16)(buf[0x17] & 0x0F)<<8 | (s16)buf[0x18]; case 3: event->x3 = (s16)(buf[0x0f] & 0x0F)<<8 | (s16)buf[0x10]; event->y3 = (s16)(buf[0x11] & 0x0F)<<8 | (s16)buf[0x12]; case 2: event->x2 = (s16)(buf[9] & 0x0F)<<8 | (s16)buf[10]; event->y2 = (s16)(buf[11] & 0x0F)<<8 | (s16)buf[12]; case 1: event->x1 = (s16)(buf[3] & 0x0F)<<8 | (s16)buf[4]; event->y1 = (s16)(buf[5] & 0x0F)<<8 | (s16)buf[6]; break; default: return -1; } #else if (event->touch_point == 1) { event->x1 = (s16)(buf[3] & 0x0F)<<8 | (s16)buf[4]; event->y1 = (s16)(buf[5] & 0x0F)<<8 | (s16)buf[6]; } #endif event->pressure = 200; dev_dbg(&this_client->dev, "%s: 1:%d %d 2:%d %d \n", __func__, event->x1, event->y1, event->x2, event->y2); //printk("%d (%d, %d), (%d, %d)\n", event->touch_point, event->x1, event->y1, event->x2, event->y2); return 0; } static void ft5x0x_report_value(void) { printk("start enter ft5x0x_report_value--\n"); struct ft5x0x_ts_data *data = i2c_get_clientdata(this_client); struct ts_event *event = &data->event; // printk("==ft5x0x_report_value =\n"); #ifdef CONFIG_FT5X0X_MULTITOUCH switch(event->touch_point) { case 5: input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR, event->pressure); input_report_abs(data->input_dev, ABS_MT_POSITION_X, event->x5); input_report_abs(data->input_dev, ABS_MT_POSITION_Y, event->y5); input_report_abs(data->input_dev, ABS_MT_WIDTH_MAJOR, 1); input_mt_sync(data->input_dev); // printk("===x2 = %d,y2 = %d ====\n",event->x2,event->y2); case 4: input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR, event->pressure); input_report_abs(data->input_dev, ABS_MT_POSITION_X, event->x4); input_report_abs(data->input_dev, ABS_MT_POSITION_Y, event->y4); input_report_abs(data->input_dev, ABS_MT_WIDTH_MAJOR, 1); input_mt_sync(data->input_dev); // printk("===x2 = %d,y2 = %d ====\n",event->x2,event->y2); case 3: input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR, event->pressure); input_report_abs(data->input_dev, ABS_MT_POSITION_X, event->x3); input_report_abs(data->input_dev, ABS_MT_POSITION_Y, event->y3); input_report_abs(data->input_dev, ABS_MT_WIDTH_MAJOR, 1); input_mt_sync(data->input_dev); // printk("===x2 = %d,y2 = %d ====\n",event->x2,event->y2); case 2: input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR, event->pressure); input_report_abs(data->input_dev, ABS_MT_POSITION_X, event->x2); input_report_abs(data->input_dev, ABS_MT_POSITION_Y, event->y2); input_report_abs(data->input_dev, ABS_MT_WIDTH_MAJOR, 1); input_mt_sync(data->input_dev); // printk("===x2 = %d,y2 = %d ====\n",event->x2,event->y2); case 1: input_report_abs(data->input_dev, ABS_MT_TOUCH_MAJOR, event->pressure); input_report_abs(data->input_dev, ABS_MT_POSITION_X, event->x1); input_report_abs(data->input_dev, ABS_MT_POSITION_Y, event->y1); input_report_abs(data->input_dev, ABS_MT_WIDTH_MAJOR, 1); input_mt_syn