-/* drivers/input/touchscreen/gt818_ts.c
- *
- * Copyright (C) 2011 Rockcip, Inc.
- *
- * 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.
- *
- * Author: hhb@rock-chips.com
- * Date: 2011.06.20
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/earlysuspend.h>
-#include <linux/hrtimer.h>
-#include <linux/i2c.h>
-#include <linux/input.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-
-#include <linux/gpio.h>
-#include <mach/iomux.h>
-
-#include <linux/irq.h>
-#include <linux/syscalls.h>
-#include <linux/reboot.h>
-#include <linux/proc_fs.h>
-
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/completion.h>
-#include <asm/uaccess.h>
-
-#include "gt818_ts.h"
-
-
-
-#if !defined(GT801_PLUS) && !defined(GT801_NUVOTON)
-#error The code does not match this touchscreen.
-#endif
-
-static struct workqueue_struct *goodix_wq;
-
-static const char *gt818_ts_name = "Goodix Capacitive TouchScreen";
-
-static struct point_queue finger_list;
-
-struct i2c_client * i2c_connect_client = NULL;
-
-//EXPORT_SYMBOL(i2c_connect_client);
-
-static struct proc_dir_entry *goodix_proc_entry;
-
-#ifdef CONFIG_HAS_EARLYSUSPEND
-static void goodix_ts_early_suspend(struct early_suspend *h);
-static void goodix_ts_late_resume(struct early_suspend *h);
-#endif
-
-#ifdef HAVE_TOUCH_KEY
- const uint16_t gt818_key_array[]={
- KEY_MENU,
- KEY_HOME,
- KEY_BACK,
- KEY_SEARCH
- };
- #define MAX_KEY_NUM (sizeof(gt818_key_array)/sizeof(gt818_key_array[0]))
-#endif
-
-
-/*Function as i2c_master_send */
-static int i2c_read_bytes(struct i2c_client *client, u8 *buf, int len)
-{
- struct i2c_msg msgs[2];
- int ret = -1;
-
- msgs[0].addr = client->addr;
- msgs[0].flags = client->flags;
- msgs[0].len = 2;
- msgs[0].buf = &buf[0];
- msgs[0].scl_rate = GT818_I2C_SCL;
- msgs[0].udelay = client->udelay;
-
- msgs[1].addr = client->addr;
- msgs[1].flags = client->flags | I2C_M_RD;
- msgs[1].len = len-2;
- msgs[1].buf = &buf[2];
- msgs[1].scl_rate = GT818_I2C_SCL;
- msgs[1].udelay = client->udelay;
-
- ret = i2c_transfer(client->adapter, msgs, 2);
- if(ret < 0)
- printk("%s:i2c_transfer fail =%d\n",__func__, ret);
- return ret;
-}
-
-/*Function as i2c_master_send */
-static int i2c_write_bytes(struct i2c_client *client,u8 *data,int len)
-{
- struct i2c_msg msg;
- int ret = -1;
- //鍙戦�璁惧鍦板潃
- msg.addr = client->addr;
- msg.flags = client->flags; //鍐欐秷鎭�
- msg.len = len;
- msg.buf = data;
- msg.scl_rate = GT818_I2C_SCL;
- msg.udelay = client->udelay;
- ret = i2c_transfer(client->adapter, &msg, 1);
- if(ret < 0)
- printk("%s:i2c_transfer fail =%d\n",__func__, ret);
- return ret;
-}
-
-
-static int i2c_pre_cmd(struct gt818_ts_data *ts)
-{
- int ret;
- u8 pre_cmd_data[2] = {0};
- pre_cmd_data[0] = 0x0f;
- pre_cmd_data[1] = 0xff;
- ret = i2c_write_bytes(ts->client,pre_cmd_data,2);
- udelay(20);
- return ret;
-}
-
-
-static int i2c_end_cmd(struct gt818_ts_data *ts)
-{
- int ret;
- u8 end_cmd_data[2] = {0};
- end_cmd_data[0] = 0x80;
- end_cmd_data[1] = 0x00;
- ret = i2c_write_bytes(ts->client,end_cmd_data,2);
- //msleep(2);
- return ret;
-}
-
-
-
-static int goodix_init_panel(struct gt818_ts_data *ts)
-{
- int ret = -1;
-
-#if 1
- u8 config_info[] = {
- 0x06,0xA2,
- 0x00,0x02,0x04,0x06,0x08,0x0A,0x0C,0x0E,
- 0x10,0x12,0x00,0x00,0x10,0x00,0x20,0x00,
- 0x30,0x00,0x40,0x00,0x50,0x00,0x60,0x00,
- 0xE0,0x00,0xD0,0x00,0xC0,0x00,0xB0,0x00,
- 0xA0,0x00,0x90,0x00,0x80,0x00,0x70,0x00,
- 0xF0,0x00,0x13,0x13,0x90,0x90,0x90,0x27,
- 0x27,0x27,0x0F,0x0E,0x0A,0x40,0x30,0x01,
- 0x03,0x00,MAX_FINGER_NUM,0x00,0x14,0xFA,0x1B,0x00,
- 0x00,0x66,0x5A,0x6A,0x5E,0x00,0x00,0x05,
- 0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x14,0x10,0xEF,0x03,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x20,0x40,0x70,0x90,0x0F,0x40,
- 0x30,0x3C,0x28,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x01
- };
-#endif
-
- ret = i2c_write_bytes(ts->client, config_info, (sizeof(config_info)/sizeof(config_info[0])));
- if (ret < 0)
- return ret;
- msleep(10);
- return 0;
-
-}
-
-
-
-static int goodix_read_version(struct gt818_ts_data *ts)
-{
- int ret;
- u8 version_data[5] = {0}; //store touchscreen version infomation
- memset(version_data, 0, 5);
- version_data[0] = 0x07;
- version_data[1] = 0x17;
- msleep(2);
- ret = i2c_read_bytes(ts->client, version_data, 4);
- if (ret < 0)
- return ret;
- dev_info(&ts->client->dev," Guitar Version: %d.%d\n",version_data[3],version_data[2]);
- return 0;
-
-}
-
-
-
-static void goodix_ts_work_func(struct work_struct *work)
-{
- u8 touch_status[8*MAX_FINGER_NUM + 18] = {READ_TOUCH_ADDR_H, READ_TOUCH_ADDR_L, 0};
- u8 *key_value = NULL;
- u8 *point_data = NULL;
- static u8 finger_last[MAX_FINGER_NUM + 1]={0};
- u8 finger_current[MAX_FINGER_NUM + 1] = {0};
- u8 coor_data[6*MAX_FINGER_NUM] = {0};
- static u8 last_key = 0;
-
- u8 finger = 0;
- u8 key = 0;
- u8 retry = 0;
- unsigned int count = 0;
- unsigned int position = 0;
- int temp = 0;
- int x = 0, y = 0 , pressure;
-
- u16 *coor_point;
-
- int syn_flag = 0;
-
- struct gt818_ts_data *ts = container_of(work, struct gt818_ts_data, work);
-
- i2c_pre_cmd(ts);
- i2c_read_bytes(ts->client, touch_status, sizeof(touch_status)/sizeof(touch_status[0]));
- i2c_end_cmd(ts);
-
- //judge whether the data is ready
- if((touch_status[2] & 0x30) != 0x20)
- {
- printk("%s:DATA_NO_READY\n", __func__);
- goto DATA_NO_READY;
- }
- //judge whether it is large area touch
- if(touch_status[13] & 0x0f)
- {
- goto DATA_NO_READY;
- }
-
- ts->bad_data = 0;
- finger = touch_status[2] & 0x07;
- key_value = touch_status + 15;
- key = key_value[2] & 0x0f;
-
- if(finger > 0)
- {
- point_data = key_value + 3;
-
- for(position = 0; position < (finger*8); position += 8)
- {
- temp = point_data[position];
- //printk("track:%d\n", temp);
- if(temp < (MAX_FINGER_NUM + 1))
- {
- finger_current[temp] = 1;
- for(count = 0; count < 6; count++)
- {
- coor_data[(temp - 1) * 6 + count] = point_data[position+1+count];
- }
- }
- else
- {
- //dev_err(&(ts->client->dev),"Track Id error:%d\n ",);
- ts->bad_data = 1;
- ts->retry++;
- goto XFER_ERROR;
- }
- }
-
- }
-
- else
- {
- for(position = 1; position < MAX_FINGER_NUM+1; position++)
- {
- finger_current[position] = 0;
- }
- }
-
- coor_point = (u16 *)coor_data;
-
- for(position = 1; position < MAX_FINGER_NUM + 1; position++)
- {
- //printk("%s:positon:%d\n", __func__, position);
- if((finger_current[position] == 0) && (finger_last[position] != 0))
- {
- input_report_abs(ts->input_dev, ABS_MT_POSITION_X, 0);
- input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, 0);
- input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
- input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0);
- input_mt_sync(ts->input_dev);
- syn_flag = 1;
- }
- else if(finger_current[position])
- {
-
- x = (*(coor_point+3*(position-1)))*SCREEN_MAX_WIDTH/(TOUCH_MAX_WIDTH);
- y = (*(coor_point+3*(position-1)+1))*SCREEN_MAX_HEIGHT/(TOUCH_MAX_HEIGHT);
- pressure = (*(coor_point+3*(position-1)+2));
- if(x < SCREEN_MAX_WIDTH){
- x = SCREEN_MAX_WIDTH - x;
- }
-
- if(y < SCREEN_MAX_HEIGHT){
- // y = SCREEN_MAX_HEIGHT-y;
- }
- input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, position - 1);
- input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 1);
- input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
- input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
- input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, pressure);
- input_mt_sync(ts->input_dev);
- syn_flag = 1;
- }
- }
-
-
-#ifdef HAVE_TOUCH_KEY
- if((last_key == 0) && (key == 0))
- goto NO_KEY_PRESS;
- else
- {
- syn_flag = 1;
- switch(key){
- case 1:
- key = 4;
- break;
- case 2:
- key = 3;
- break;
- case 4:
- key = 2;
- break;
- case 8:
- key = 1;
- break;
- default:
- key = 0;
- break;
- }
- if(key != 0){
- input_report_key(ts->input_dev, gt818_key_array[key - 1], 1);
- }
- else{
- input_report_key(ts->input_dev, gt818_key_array[last_key - 1], 0);
- }
- last_key = key;
- }
-
-#endif
-
-
-NO_KEY_PRESS:
- if(syn_flag){
- input_sync(ts->input_dev);
- }
-
- for(position = 1; position < MAX_FINGER_NUM + 1; position++)
- {
- finger_last[position] = finger_current[position];
- }
-
-DATA_NO_READY:
-XFER_ERROR:
-// i2c_end_cmd(ts);
- if(ts->use_irq)
- enable_irq(ts->client->irq);
-
-}
-
-
-static enum hrtimer_restart goodix_ts_timer_func(struct hrtimer *timer)
-{
- struct gt818_ts_data *ts = container_of(timer, struct gt818_ts_data, timer);
- queue_work(goodix_wq, &ts->work);
- hrtimer_start(&ts->timer, ktime_set(0, (POLL_TIME+6)*1000000), HRTIMER_MODE_REL);
- return HRTIMER_NORESTART;
-}
-
-
-static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
-{
- struct gt818_ts_data *ts = dev_id;
- disable_irq_nosync(ts->client->irq);
- queue_work(goodix_wq, &ts->work);
- return IRQ_HANDLED;
-}
-
-static int goodix_ts_power(struct gt818_ts_data * ts, int on)
-{
- int ret = -1;
- struct gt818_platform_data *pdata = ts->client->dev.platform_data;
- unsigned char i2c_control_buf[3] = {0x06,0x92,0x01}; //suspend cmd
- if(ts != NULL && !ts->use_irq)
- return -2;
- switch(on)
- {
- case 0:
- i2c_pre_cmd(ts);
- // set the io port high level to avoid level change which might stop gt818 from sleeping
- gpio_direction_output(pdata->gpio_reset, 1);
- gpio_direction_output(pdata->gpio_pendown, 1);
- msleep(5);
- ret = i2c_write_bytes(ts->client, i2c_control_buf, 3);
- if(ret < 0)
- {
- printk(KERN_INFO"**gt818 suspend fail**\n");
- }
- else
- {
- printk(KERN_INFO"**gt818 suspend**\n");
- ret = 0;
- }
-// i2c_end_cmd(ts);
- return ret;
-
- case 1:
-
- gpio_pull_updown(pdata->gpio_pendown, 1);
- gpio_direction_output(pdata->gpio_pendown, 0);
- msleep(1);
- gpio_direction_output(pdata->gpio_pendown, 1);
- msleep(1);
- gpio_direction_input(pdata->gpio_pendown);
- gpio_pull_updown(pdata->gpio_pendown, 0);
- msleep(2);
- gpio_direction_output(pdata->gpio_reset, 0);
- msleep(2);
- gpio_direction_input(pdata->gpio_reset);
- gpio_pull_updown(pdata->gpio_reset, 0);
- msleep(30);
-
- ret = i2c_pre_cmd(ts);
- if(ret > 0){
- printk(KERN_INFO"**gt818 resume**\n");
- }
- else{
- printk(KERN_INFO"**gt818 resume fail**\n");
- }
- i2c_end_cmd(ts);
- return ret;
-
- default:
- printk(KERN_DEBUG "%s: Cant't support this command.", gt818_ts_name);
- return -EINVAL;
- }
-
-}
-
-
-static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
-{
- int ret = 0;
- int retry=0;
- u8 goodix_id[3] = {0,0xff,0};
- struct gt818_ts_data *ts;
-
- struct gt818_platform_data *pdata;
- dev_dbg(&client->dev,"Install touch driver.\n");
- printk("gt818: Install touch driver.\n");
- //Check I2C function
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
- {
- dev_err(&client->dev, "Must have I2C_FUNC_I2C.\n");
- ret = -ENODEV;
- goto err_check_functionality_failed;
- }
-
- ts = kzalloc(sizeof(*ts), GFP_KERNEL);
- if (ts == NULL) {
- ret = -ENOMEM;
- goto err_alloc_data_failed;
- }
-
- i2c_connect_client = client; //used by Guitar_Update
- pdata = client->dev.platform_data;
- ts->client = client;
- i2c_set_clientdata(client, ts);
-
- //init int and reset ports
- ret = gpio_request(pdata->gpio_pendown, "TS_INT"); //Request IO
- if (ret){
- dev_err(&client->dev, "Failed to request GPIO:%d, ERRNO:%d\n",(int)pdata->gpio_pendown, ret);
- goto err_gpio_request_failed;
- }
- rk29_mux_api_set(pdata->pendown_iomux_name, pdata->pendown_iomux_mode);
- gpio_direction_input(pdata->gpio_pendown);
- gpio_pull_updown(pdata->gpio_pendown, 0);
-
- ret = gpio_request(pdata->gpio_reset, "gt818_resetPin");
- if(ret){
- dev_err(&client->dev, "failed to request resetPin GPIO%d\n", pdata->gpio_reset);
- goto err_gpio_request_failed;
- }
- rk29_mux_api_set(pdata->resetpin_iomux_name, pdata->resetpin_iomux_mode);
-#if 1
- for(retry = 0; retry < 4; retry++)
- {
- gpio_pull_updown(pdata->gpio_reset, 1);
- gpio_direction_output(pdata->gpio_reset, 0);
- msleep(2);
- gpio_direction_input(pdata->gpio_reset);
- gpio_pull_updown(pdata->gpio_reset, 0);
- msleep(30);
- ret = i2c_pre_cmd(ts);
- if (ret > 0)
- break;
- msleep(50);
- }
-
- if(ret <= 0)
- {
- dev_err(&client->dev, "Warnning: I2C communication might be ERROR!\n");
- goto err_i2c_failed;
- }
-
-#endif
- for(retry = 0; retry < 3; retry++)
- {
- ret = goodix_init_panel(ts);
- dev_info(&client->dev,"the config ret is :%d\n", ret);
- msleep(20);
- if(ret < 0) //Initiall failed
- continue;
- else
- break;
- }
-
- if(ret < 0) {
- ts->bad_data = 1;
- goto err_init_godix_ts;
- }
- goodix_read_version(ts);
-
- i2c_end_cmd(ts);
- INIT_WORK(&ts->work, goodix_ts_work_func); //init work_struct
- ts->input_dev = input_allocate_device();
- if (ts->input_dev == NULL) {
- ret = -ENOMEM;
- dev_dbg(&client->dev,"goodix_ts_probe: Failed to allocate input device\n");
- goto err_input_dev_alloc_failed;
- }
-
- ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) ;
- ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
- ts->input_dev->absbit[0] = BIT_MASK(ABS_MT_POSITION_X) | BIT_MASK(ABS_MT_POSITION_Y) |
- BIT_MASK(ABS_MT_TOUCH_MAJOR) | BIT_MASK(ABS_MT_WIDTH_MAJOR); // for android
-
-
-#ifdef HAVE_TOUCH_KEY
- for(retry = 0; retry < MAX_KEY_NUM; retry++)
- {
- input_set_capability(ts->input_dev, EV_KEY, gt818_key_array[retry]);
- }
-#endif
-
- snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&client->dev));
- snprintf(ts->name, sizeof(ts->name), "gt818-touchscreen");
-
- ts->input_dev->name = "gt818_ts";//ts->name;
- ts->input_dev->phys = ts->phys;
- ts->input_dev->dev.parent = &client->dev;
- ts->input_dev->id.bustype = BUS_I2C;
- ts->input_dev->id.vendor = 0xDEAD;
- ts->input_dev->id.product = 0xBEEF;
- ts->input_dev->id.version = 10427; //screen firmware version
-
-#ifdef GOODIX_MULTI_TOUCH
-
- input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
- input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
- input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, SCREEN_MAX_WIDTH, 0, 0);
- input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, SCREEN_MAX_HEIGHT, 0, 0);
- input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, MAX_FINGER_NUM, 0, 0);
-#else
- input_set_abs_params(ts->input_dev, ABS_X, 0, SCREEN_MAX_HEIGHT, 0, 0);
- input_set_abs_params(ts->input_dev, ABS_Y, 0, SCREEN_MAX_WIDTH, 0, 0);
- input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 255, 0, 0);
-#endif
-
- ret = input_register_device(ts->input_dev);
- if (ret) {
- dev_err(&client->dev,"Probe: Unable to register %s input device\n", ts->input_dev->name);
- goto err_input_register_device_failed;
- }
- ts->bad_data = 0;
-// finger_list.length = 0;
-
- client->irq = gpio_to_irq(pdata->gpio_pendown); //If not defined in client
- if (client->irq)
- {
-
- #if INT_TRIGGER==0
- #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_EDGE_RISING
- #elif INT_TRIGGER==1
- #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_EDGE_FALLING
- #elif INT_TRIGGER==2
- #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_LEVEL_LOW
- #elif INT_TRIGGER==3
- #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_LEVEL_HIGH
- #endif
-
- ret = request_irq(client->irq, goodix_ts_irq_handler, GT801_PLUS_IRQ_TYPE,
- client->name, ts);
- if (ret != 0) {
- dev_err(&client->dev,"Cannot allocate ts INT!ERRNO:%d\n", ret);
- gpio_direction_input(pdata->gpio_pendown);
- gpio_free(pdata->gpio_pendown);
- goto err_gpio_request_failed;
- }
- else
- {
- disable_irq(client->irq);
- ts->use_irq = 1;
- dev_dbg(&client->dev,"Reques EIRQ %d succesd on GPIO:%d\n", client->irq, pdata->gpio_pendown);
- }
- }
-
-err_gpio_request_failed:
- ts->power = goodix_ts_power;
-#ifdef CONFIG_HAS_EARLYSUSPEND
- ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
- ts->early_suspend.suspend = goodix_ts_early_suspend;
- ts->early_suspend.resume = goodix_ts_late_resume;
- register_early_suspend(&ts->early_suspend);
-#endif
- dev_info(&client->dev,"Start %s in %s mode\n",
- ts->input_dev->name, ts->use_irq ? "interrupt" : "polling");
-
- if (ts->use_irq)
- {
- enable_irq(client->irq);
- }
- else
- {
- hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- ts->timer.function = goodix_ts_timer_func;
- hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
- }
- return 0;
-
-err_init_godix_ts:
- i2c_end_cmd(ts);
- if(ts->use_irq)
- {
- ts->use_irq = 0;
- free_irq(client->irq,ts);
- gpio_direction_input(pdata->gpio_pendown);
- gpio_free(pdata->gpio_pendown);
- }
- else
- hrtimer_cancel(&ts->timer);
-
-err_input_register_device_failed:
- input_free_device(ts->input_dev);
-
-err_input_dev_alloc_failed:
- i2c_set_clientdata(client, NULL);
-err_i2c_failed:
- kfree(ts);
-err_alloc_data_failed:
-err_check_functionality_failed:
-err_create_proc_entry:
- return ret;
-}
-
-
-static int goodix_ts_remove(struct i2c_client *client)
-{
- struct gt818_ts_data *ts = i2c_get_clientdata(client);
- struct gt818_platform_data *pdata = client->dev.platform_data;
-
-#ifdef CONFIG_HAS_EARLYSUSPEND
- unregister_early_suspend(&ts->early_suspend);
-#endif
-#ifdef CONFIG_TOUCHSCREEN_GOODIX_IAP
- remove_proc_entry("goodix-update", NULL);
-#endif
- if (ts && ts->use_irq)
- {
- gpio_direction_input(pdata->gpio_pendown);
- gpio_free(pdata->gpio_pendown);
- free_irq(client->irq, ts);
- }
- else if(ts)
- hrtimer_cancel(&ts->timer);
-
- dev_notice(&client->dev,"The driver is removing...\n");
- i2c_set_clientdata(client, NULL);
- input_unregister_device(ts->input_dev);
- kfree(ts);
- return 0;
-}
-
-
-static int goodix_ts_suspend(struct i2c_client *client, pm_message_t mesg)
-{
- int ret;
- struct gt818_ts_data *ts = i2c_get_clientdata(client);
-
- if (ts->use_irq)
- disable_irq(client->irq);
- else
- hrtimer_cancel(&ts->timer);
- //ret = cancel_work_sync(&ts->work);
- //if(ret && ts->use_irq)
- //enable_irq(client->irq);
- if (ts->power) {
- ret = ts->power(ts, 0);
- if (ret < 0)
- printk(KERN_ERR "goodix_ts_resume power off failed\n");
- }
- return 0;
-}
-
-
-static int goodix_ts_resume(struct i2c_client *client)
-{
- int ret;
- struct gt818_ts_data *ts = i2c_get_clientdata(client);
-
- if (ts->power) {
- ret = ts->power(ts, 1);
- if (ret < 0)
- printk(KERN_ERR "goodix_ts_resume power on failed\n");
- }
-
- if (ts->use_irq)
- enable_irq(client->irq);
- else
- hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
-
- return 0;
-}
-
-#ifdef CONFIG_HAS_EARLYSUSPEND
-static void goodix_ts_early_suspend(struct early_suspend *h)
-{
- struct gt818_ts_data *ts;
- ts = container_of(h, struct gt818_ts_data, early_suspend);
- goodix_ts_suspend(ts->client, PMSG_SUSPEND);
-}
-
-static void goodix_ts_late_resume(struct early_suspend *h)
-{
- struct gt818_ts_data *ts;
- ts = container_of(h, struct gt818_ts_data, early_suspend);
- goodix_ts_resume(ts->client);
-}
-#endif
-
-
-//only one client
-static const struct i2c_device_id goodix_ts_id[] = {
- { GOODIX_I2C_NAME, 0 },
- { }
-};
-
-
-static struct i2c_driver goodix_ts_driver = {
- .probe = goodix_ts_probe,
- .remove = goodix_ts_remove,
-#ifndef CONFIG_HAS_EARLYSUSPEND
- .suspend = goodix_ts_suspend,
- .resume = goodix_ts_resume,
-#endif
- .id_table = goodix_ts_id,
- .driver = {
- .name = GOODIX_I2C_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-
-static int __devinit goodix_ts_init(void)
-{
- int ret;
- goodix_wq = create_singlethread_workqueue("goodix_wq"); //create a work queue and worker thread
- if (!goodix_wq) {
- printk(KERN_ALERT "creat workqueue faiked\n");
- return -ENOMEM;
- }
- ret = i2c_add_driver(&goodix_ts_driver);
- return ret;
-}
-
-
-static void __exit goodix_ts_exit(void)
-{
- printk(KERN_ALERT "Touchscreen driver of guitar exited.\n");
- i2c_del_driver(&goodix_ts_driver);
- if (goodix_wq)
- destroy_workqueue(goodix_wq); //release our work queue
-}
-
-late_initcall(goodix_ts_init);
-module_exit(goodix_ts_exit);
-
-MODULE_DESCRIPTION("Goodix Touchscreen Driver");
-MODULE_AUTHOR("hhb@rock-chips.com")
-MODULE_LICENSE("GPL");
-
+/* drivers/input/touchscreen/gt818_ts.c\r
+ *\r
+ * Copyright (C) 2011 Rockcip, Inc.\r
+ * \r
+ * This software is licensed under the terms of the GNU General Public\r
+ * License version 2, as published by the Free Software Foundation, and\r
+ * may be copied, distributed, and modified under those terms.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * Author: hhb@rock-chips.com\r
+ * Date: 2011.06.20\r
+ */\r
+#include <linux/kernel.h>\r
+#include <linux/module.h>\r
+#include <linux/time.h>\r
+#include <linux/delay.h>\r
+#include <linux/device.h>\r
+#include <linux/earlysuspend.h>\r
+#include <linux/hrtimer.h>\r
+#include <linux/i2c.h>\r
+#include <linux/input.h>\r
+#include <linux/interrupt.h>\r
+#include <linux/io.h>\r
+#include <linux/platform_device.h>\r
+\r
+#include <linux/gpio.h>\r
+#include <mach/iomux.h>\r
+\r
+#include <linux/irq.h>\r
+#include <linux/syscalls.h>\r
+#include <linux/reboot.h>\r
+#include <linux/proc_fs.h>\r
+\r
+#include <linux/vmalloc.h>\r
+#include <linux/fs.h>\r
+#include <linux/string.h>\r
+#include <linux/completion.h>\r
+#include <asm/uaccess.h>\r
+\r
+#include "gt818_ts.h"\r
+\r
+\r
+\r
+#if !defined(GT801_PLUS) && !defined(GT801_NUVOTON)\r
+#error The code does not match this touchscreen.\r
+#endif\r
+\r
+static struct workqueue_struct *goodix_wq;\r
+\r
+static const char *gt818_ts_name = "Goodix Capacitive TouchScreen";\r
+\r
+static struct point_queue finger_list;\r
+\r
+struct i2c_client * i2c_connect_client = NULL;\r
+\r
+//EXPORT_SYMBOL(i2c_connect_client);\r
+\r
+static struct proc_dir_entry *goodix_proc_entry;\r
+ \r
+#ifdef CONFIG_HAS_EARLYSUSPEND\r
+static void goodix_ts_early_suspend(struct early_suspend *h);\r
+static void goodix_ts_late_resume(struct early_suspend *h);\r
+#endif\r
+\r
+#ifdef HAVE_TOUCH_KEY\r
+ const uint16_t gt818_key_array[]={\r
+ KEY_MENU,\r
+ KEY_HOME,\r
+ KEY_BACK,\r
+ KEY_SEARCH\r
+ };\r
+ #define MAX_KEY_NUM (sizeof(gt818_key_array)/sizeof(gt818_key_array[0]))\r
+#endif\r
+\r
+\r
+/*Function as i2c_master_send */\r
+static int i2c_read_bytes(struct i2c_client *client, u8 *buf, int len)\r
+{\r
+ struct i2c_msg msgs[2];\r
+ int ret = -1;\r
+\r
+ msgs[0].addr = client->addr;\r
+ msgs[0].flags = client->flags;\r
+ msgs[0].len = 2;\r
+ msgs[0].buf = &buf[0];\r
+ msgs[0].scl_rate = GT818_I2C_SCL;\r
+ msgs[0].udelay = client->udelay;\r
+\r
+ msgs[1].addr = client->addr;\r
+ msgs[1].flags = client->flags | I2C_M_RD;\r
+ msgs[1].len = len-2;\r
+ msgs[1].buf = &buf[2];\r
+ msgs[1].scl_rate = GT818_I2C_SCL;\r
+ msgs[1].udelay = client->udelay;\r
+\r
+ ret = i2c_transfer(client->adapter, msgs, 2);\r
+ if(ret < 0)\r
+ printk("%s:i2c_transfer fail =%d\n",__func__, ret);\r
+\r
+ return ret;\r
+}\r
+\r
+/*Function as i2c_master_send */\r
+static int i2c_write_bytes(struct i2c_client *client,u8 *data,int len)\r
+{\r
+ struct i2c_msg msg;\r
+ int ret = -1;\r
+\r
+ msg.addr = client->addr;\r
+ msg.flags = client->flags;\r
+ msg.len = len;\r
+ msg.buf = data;\r
+ msg.scl_rate = GT818_I2C_SCL;\r
+ msg.udelay = client->udelay;\r
+\r
+ ret = i2c_transfer(client->adapter, &msg, 1);\r
+ if(ret < 0)\r
+ printk("%s:i2c_transfer fail =%d\n",__func__, ret);\r
+\r
+ return ret;\r
+}\r
+\r
+\r
+static int i2c_pre_cmd(struct gt818_ts_data *ts)\r
+{\r
+ int ret;\r
+ u8 pre_cmd_data[2] = {0};\r
+ pre_cmd_data[0] = 0x0f;\r
+ pre_cmd_data[1] = 0xff;\r
+ ret = i2c_write_bytes(ts->client,pre_cmd_data,2);\r
+ udelay(20);\r
+ return ret;\r
+}\r
+\r
+\r
+static int i2c_end_cmd(struct gt818_ts_data *ts)\r
+{\r
+ int ret;\r
+ u8 end_cmd_data[2] = {0};\r
+ end_cmd_data[0] = 0x80;\r
+ end_cmd_data[1] = 0x00;\r
+ ret = i2c_write_bytes(ts->client,end_cmd_data,2);\r
+ udelay(20);\r
+ return ret;\r
+}\r
+\r
+\r
+\r
+static int goodix_init_panel(struct gt818_ts_data *ts)\r
+{\r
+ int ret = -1;\r
+ int i = 0;\r
+#if 1\r
+ u8 config_info[] = {\r
+ 0x06,0xA2,\r
+ 0x00,0x02,0x04,0x06,0x08,0x0A,0x0C,0x0E,\r
+ 0x10,0x12,0x00,0x00,0x10,0x00,0x20,0x00,\r
+ 0x30,0x00,0x40,0x00,0x50,0x00,0x60,0x00,\r
+ 0xE0,0x00,0xD0,0x00,0xC0,0x00,0xB0,0x00,\r
+ 0xA0,0x00,0x90,0x00,0x80,0x00,0x70,0x00,\r
+ 0xF0,0x00,0x13,0x13,0x90,0x90,0x90,0x27,\r
+ 0x27,0x27,0x0F,0x0E,0x0A,0x40,0x30,0x01,\r
+ 0x03,0x00,MAX_FINGER_NUM,0x00,0x14,0xFA,0x1B,0x00,\r
+ 0x00,0x66,0x5A,0x6A,0x5E,0x00,0x00,0x05,\r
+ 0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\r
+ 0x14,0x10,0xEF,0x03,0x00,0x00,0x00,0x00,\r
+ 0x00,0x00,0x20,0x40,0x70,0x90,0x0F,0x40,\r
+ 0x30,0x3C,0x28,0x00,0x00,0x00,0x00,0x00,\r
+ 0x00,0x01\r
+ };\r
+#endif\r
+ u8 read_config_info[sizeof(config_info)] = {0};\r
+ read_config_info[0] = 0x06;\r
+ read_config_info[1] = 0xa2;\r
+\r
+ ret = i2c_write_bytes(ts->client, config_info, (sizeof(config_info)/sizeof(config_info[0])));\r
+ if (ret < 0) {\r
+ printk("config gt818 fail\n");\r
+ return ret;\r
+ }\r
+\r
+ ret = i2c_read_bytes(ts->client, read_config_info, (sizeof(config_info)/sizeof(config_info[0])));\r
+ if (ret < 0){\r
+ printk("read gt818 config fail\n");\r
+ return ret;\r
+ }\r
+\r
+ for(i = 2; i < 106; i++){\r
+ if(read_config_info[i] != config_info[i]){\r
+ printk("write gt818 config error\n");\r
+ ret = -1;\r
+ return ret;\r
+ }\r
+ }\r
+ msleep(10);\r
+ return 0;\r
+\r
+}\r
+\r
+static int goodix_read_version(struct gt818_ts_data *ts)\r
+{\r
+ int ret;\r
+ u8 version_data[5] = {0}; //store touchscreen version infomation\r
+ memset(version_data, 0, 5);\r
+ version_data[0] = 0x07;\r
+ version_data[1] = 0x17;\r
+ msleep(2);\r
+ ret = i2c_read_bytes(ts->client, version_data, 4);\r
+ if (ret < 0) \r
+ return ret;\r
+ dev_info(&ts->client->dev," Guitar Version: %d.%d\n",version_data[3],version_data[2]);\r
+ return 0;\r
+ \r
+}\r
+\r
+\r
+\r
+static void goodix_ts_work_func(struct work_struct *work)\r
+{ \r
+ u8 touch_status[8*MAX_FINGER_NUM + 18] = {READ_TOUCH_ADDR_H, READ_TOUCH_ADDR_L, 0};\r
+ u8 *key_value = NULL;\r
+ u8 *point_data = NULL;\r
+ static u8 finger_last[MAX_FINGER_NUM + 1]={0};\r
+ u8 finger_current[MAX_FINGER_NUM + 1] = {0};\r
+ u8 coor_data[6*MAX_FINGER_NUM] = {0};\r
+ static u8 last_key = 0;\r
+\r
+ u8 finger = 0;\r
+ u8 key = 0;\r
+ u8 retry = 0;\r
+ unsigned int count = 0;\r
+ unsigned int position = 0; \r
+ int temp = 0;\r
+ int x = 0, y = 0 , pressure;\r
+\r
+ u16 *coor_point;\r
+\r
+ int syn_flag = 0;\r
+\r
+ struct gt818_ts_data *ts = container_of(work, struct gt818_ts_data, work);\r
+\r
+ i2c_pre_cmd(ts);\r
+ i2c_read_bytes(ts->client, touch_status, sizeof(touch_status)/sizeof(touch_status[0]));\r
+ i2c_end_cmd(ts);\r
+\r
+ //judge whether the data is ready\r
+ if((touch_status[2] & 0x30) != 0x20)\r
+ {\r
+ printk("%s:DATA_NO_READY\n", __func__);\r
+ goto DATA_NO_READY;\r
+ }\r
+ //judge whether it is large area touch\r
+ if(touch_status[13] & 0x0f)\r
+ {\r
+ goto DATA_NO_READY;\r
+ }\r
+\r
+ ts->bad_data = 0;\r
+ finger = touch_status[2] & 0x07;\r
+ key_value = touch_status + 15;\r
+ key = key_value[2] & 0x0f;\r
+\r
+ if(finger > 0)\r
+ {\r
+ point_data = key_value + 3;\r
+\r
+ for(position = 0; position < (finger*8); position += 8)\r
+ {\r
+ temp = point_data[position];\r
+ //printk("track:%d\n", temp);\r
+ if(temp < (MAX_FINGER_NUM + 1))\r
+ {\r
+ finger_current[temp] = 1;\r
+ for(count = 0; count < 6; count++)\r
+ {\r
+ coor_data[(temp - 1) * 6 + count] = point_data[position+1+count];\r
+ }\r
+ }\r
+ else\r
+ {\r
+ //dev_err(&(ts->client->dev),"Track Id error:%d\n ",);\r
+ ts->bad_data = 1;\r
+ ts->retry++;\r
+ goto XFER_ERROR;\r
+ } \r
+ }\r
+ \r
+ }\r
+ \r
+ else\r
+ {\r
+ for(position = 1; position < MAX_FINGER_NUM+1; position++)\r
+ {\r
+ finger_current[position] = 0;\r
+ }\r
+ }\r
+\r
+ coor_point = (u16 *)coor_data;\r
+\r
+ for(position = 1; position < MAX_FINGER_NUM + 1; position++)\r
+ {\r
+ //printk("%s:positon:%d\n", __func__, position);\r
+ if((finger_current[position] == 0) && (finger_last[position] != 0))\r
+ {\r
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, 0);\r
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, 0);\r
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);\r
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0);\r
+ input_mt_sync(ts->input_dev);\r
+ syn_flag = 1;\r
+ }\r
+ else if(finger_current[position])\r
+ {\r
+\r
+ x = (*(coor_point+3*(position-1)))*SCREEN_MAX_WIDTH/(TOUCH_MAX_WIDTH);\r
+ y = (*(coor_point+3*(position-1)+1))*SCREEN_MAX_HEIGHT/(TOUCH_MAX_HEIGHT);\r
+ pressure = (*(coor_point+3*(position-1)+2));\r
+ if(x < SCREEN_MAX_WIDTH){\r
+ x = SCREEN_MAX_WIDTH - x;\r
+ }\r
+\r
+ if(y < SCREEN_MAX_HEIGHT){\r
+ // y = SCREEN_MAX_HEIGHT-y;\r
+ }\r
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, position - 1);\r
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 1);\r
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);\r
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);\r
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, pressure);\r
+ input_mt_sync(ts->input_dev);\r
+ syn_flag = 1;\r
+ }\r
+ }\r
+\r
+\r
+#ifdef HAVE_TOUCH_KEY\r
+ if((last_key == 0) && (key == 0)){\r
+ goto NO_KEY_PRESS;\r
+ }\r
+ else{\r
+ syn_flag = 1;\r
+ switch(key){\r
+ case 1:\r
+ key = 4;\r
+ break;\r
+ case 2:\r
+ key = 3;\r
+ break;\r
+ case 4:\r
+ key = 2;\r
+ break;\r
+ case 8:\r
+ key = 1;\r
+ break;\r
+ default:\r
+ key = 0;\r
+ break;\r
+ }\r
+ if(key != 0){\r
+ input_report_key(ts->input_dev, gt818_key_array[key - 1], 1);\r
+ }\r
+ else{\r
+ input_report_key(ts->input_dev, gt818_key_array[last_key - 1], 0);\r
+ }\r
+ last_key = key;\r
+ } \r
+\r
+#endif\r
+\r
+\r
+NO_KEY_PRESS:\r
+ if(syn_flag){\r
+ input_sync(ts->input_dev);\r
+ }\r
+\r
+ for(position = 1; position < MAX_FINGER_NUM + 1; position++)\r
+ {\r
+ finger_last[position] = finger_current[position];\r
+ }\r
+\r
+DATA_NO_READY:\r
+XFER_ERROR:\r
+// i2c_end_cmd(ts);\r
+ if(ts->use_irq)\r
+ enable_irq(ts->client->irq);\r
+\r
+}\r
+\r
+static int test_suspend_resume(struct gt818_ts_data *ts){\r
+ while(1){\r
+ ts->power(ts, 0);\r
+ msleep(5000);\r
+ ts->power(ts, 1);\r
+ msleep(5000);\r
+ }\r
+ return 0;\r
+}\r
+\r
+\r
+static enum hrtimer_restart goodix_ts_timer_func(struct hrtimer *timer)\r
+{\r
+ struct gt818_ts_data *ts = container_of(timer, struct gt818_ts_data, timer);\r
+ queue_work(goodix_wq, &ts->work);\r
+ hrtimer_start(&ts->timer, ktime_set(0, (POLL_TIME+6)*1000000), HRTIMER_MODE_REL);\r
+ return HRTIMER_NORESTART;\r
+}\r
+\r
+\r
+static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)\r
+{\r
+ struct gt818_ts_data *ts = dev_id;\r
+ disable_irq_nosync(ts->client->irq);\r
+ queue_work(goodix_wq, &ts->work);\r
+ return IRQ_HANDLED;\r
+}\r
+\r
+static int goodix_ts_power(struct gt818_ts_data * ts, int on)\r
+{\r
+ int ret = -1;\r
+ struct gt818_platform_data *pdata = ts->client->dev.platform_data;\r
+ unsigned char i2c_control_buf[3] = {0x06,0x92,0x01}; //suspend cmd\r
+ if(ts != NULL && !ts->use_irq)\r
+ return -2;\r
+ switch(on)\r
+ {\r
+ case 0:\r
+ i2c_pre_cmd(ts);\r
+ // set the io port high level to avoid level change which might stop gt818 from sleeping\r
+ gpio_direction_output(pdata->gpio_reset, 1);\r
+ gpio_direction_output(pdata->gpio_pendown, 1);\r
+ msleep(5);\r
+ ret = i2c_write_bytes(ts->client, i2c_control_buf, 3);\r
+ if(ret < 0)\r
+ {\r
+ printk(KERN_INFO"**gt818 suspend fail**\n");\r
+ }\r
+ else\r
+ {\r
+ //printk(KERN_INFO"**gt818 suspend**\n");\r
+ ret = 0;\r
+ }\r
+// i2c_end_cmd(ts);\r
+ return ret;\r
+ \r
+ case 1:\r
+\r
+ gpio_pull_updown(pdata->gpio_pendown, 1);\r
+ gpio_direction_output(pdata->gpio_pendown, 0);\r
+ msleep(1);\r
+ gpio_direction_output(pdata->gpio_pendown, 1);\r
+ msleep(1);\r
+ gpio_direction_input(pdata->gpio_pendown);\r
+ gpio_pull_updown(pdata->gpio_pendown, 0);\r
+\r
+/*\r
+ msleep(2);\r
+ gpio_pull_updown(pdata->gpio_reset, 1);\r
+ gpio_direction_output(pdata->gpio_reset, 0);\r
+ msleep(2);\r
+ gpio_direction_input(pdata->gpio_reset);\r
+ gpio_pull_updown(pdata->gpio_reset, 0);\r
+ msleep(30);\r
+*/\r
+ msleep(1);\r
+ ret = i2c_pre_cmd(ts);\r
+ //printk(KERN_INFO"**gt818 reusme**\n");\r
+ ret = i2c_end_cmd(ts);\r
+\r
+ return ret;\r
+ \r
+ default:\r
+ printk(KERN_DEBUG "%s: Cant't support this command.", gt818_ts_name);\r
+ return -EINVAL;\r
+ }\r
+\r
+}\r
+\r
+\r
+static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)\r
+{\r
+ int ret = 0;\r
+ int retry=0;\r
+ u8 goodix_id[3] = {0,0xff,0};\r
+ struct gt818_ts_data *ts;\r
+\r
+ struct gt818_platform_data *pdata;\r
+ dev_dbg(&client->dev,"Install touch driver.\n");\r
+ printk("gt818: Install touch driver.\n");\r
+ //Check I2C function\r
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) \r
+ {\r
+ dev_err(&client->dev, "Must have I2C_FUNC_I2C.\n");\r
+ ret = -ENODEV;\r
+ goto err_check_functionality_failed;\r
+ }\r
+\r
+ ts = kzalloc(sizeof(*ts), GFP_KERNEL);\r
+ if (ts == NULL) {\r
+ ret = -ENOMEM;\r
+ goto err_alloc_data_failed;\r
+ }\r
+\r
+ i2c_connect_client = client; //used by Guitar_Update\r
+ pdata = client->dev.platform_data;\r
+ ts->client = client;\r
+ i2c_set_clientdata(client, ts);\r
+\r
+ //init int and reset ports\r
+ ret = gpio_request(pdata->gpio_pendown, "TS_INT"); //Request IO\r
+ if (ret){\r
+ dev_err(&client->dev, "Failed to request GPIO:%d, ERRNO:%d\n",(int)pdata->gpio_pendown, ret);\r
+ goto err_gpio_request_failed;\r
+ }\r
+ rk29_mux_api_set(pdata->pendown_iomux_name, pdata->pendown_iomux_mode);\r
+ gpio_direction_input(pdata->gpio_pendown);\r
+ gpio_pull_updown(pdata->gpio_pendown, 0);\r
+\r
+ ret = gpio_request(pdata->gpio_reset, "gt818_resetPin");\r
+ if(ret){\r
+ dev_err(&client->dev, "failed to request resetPin GPIO%d\n", pdata->gpio_reset);\r
+ goto err_gpio_request_failed;\r
+ }\r
+ rk29_mux_api_set(pdata->resetpin_iomux_name, pdata->resetpin_iomux_mode);\r
+\r
+#if 1\r
+ for(retry = 0; retry < 4; retry++)\r
+ {\r
+ gpio_pull_updown(pdata->gpio_reset, 1);\r
+ gpio_direction_output(pdata->gpio_reset, 0);\r
+ msleep(1); //delay at least 1ms\r
+ gpio_direction_input(pdata->gpio_reset);\r
+ gpio_pull_updown(pdata->gpio_reset, 0);\r
+ msleep(25); //delay at least 20ms\r
+ ret = i2c_pre_cmd(ts);\r
+ if (ret > 0)\r
+ break;\r
+ msleep(50);\r
+ }\r
+\r
+ if(ret <= 0)\r
+ {\r
+ dev_err(&client->dev, "Warnning: I2C communication might be ERROR!\n");\r
+ goto err_i2c_failed;\r
+ } \r
+#endif\r
+\r
+ for(retry = 0; retry < 3; retry++)\r
+ {\r
+ ret = goodix_init_panel(ts);\r
+\r
+ dev_info(&client->dev,"the config ret is :%d\n", ret);\r
+ msleep(20);\r
+ if(ret < 0) //Initiall failed\r
+ continue;\r
+ else\r
+ break;\r
+ }\r
+\r
+ if(ret < 0) {\r
+ ts->bad_data = 1;\r
+ goto err_init_godix_ts;\r
+ }\r
+\r
+ goodix_read_version(ts);\r
+\r
+\r
+ INIT_WORK(&ts->work, goodix_ts_work_func); //init work_struct\r
+ ts->input_dev = input_allocate_device();\r
+ if (ts->input_dev == NULL) {\r
+ ret = -ENOMEM;\r
+ dev_dbg(&client->dev,"goodix_ts_probe: Failed to allocate input device\n");\r
+ goto err_input_dev_alloc_failed;\r
+ }\r
+\r
+ ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) ;\r
+ ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);\r
+ ts->input_dev->absbit[0] = BIT_MASK(ABS_MT_POSITION_X) | BIT_MASK(ABS_MT_POSITION_Y) |\r
+ BIT_MASK(ABS_MT_TOUCH_MAJOR) | BIT_MASK(ABS_MT_WIDTH_MAJOR); // for android\r
+\r
+\r
+#ifdef HAVE_TOUCH_KEY\r
+ for(retry = 0; retry < MAX_KEY_NUM; retry++)\r
+ {\r
+ input_set_capability(ts->input_dev, EV_KEY, gt818_key_array[retry]);\r
+ }\r
+#endif\r
+\r
+ snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&client->dev));\r
+ snprintf(ts->name, sizeof(ts->name), "gt818-touchscreen");\r
+\r
+ ts->input_dev->name = "gt818_ts";//ts->name;\r
+ ts->input_dev->phys = ts->phys;\r
+ ts->input_dev->dev.parent = &client->dev;\r
+ ts->input_dev->id.bustype = BUS_I2C;\r
+ ts->input_dev->id.vendor = 0xDEAD;\r
+ ts->input_dev->id.product = 0xBEEF;\r
+ ts->input_dev->id.version = 10427; //screen firmware version\r
+\r
+#ifdef GOODIX_MULTI_TOUCH\r
+\r
+ input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);\r
+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);\r
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, SCREEN_MAX_WIDTH, 0, 0);\r
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, SCREEN_MAX_HEIGHT, 0, 0);\r
+ input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, MAX_FINGER_NUM, 0, 0);\r
+#else\r
+ input_set_abs_params(ts->input_dev, ABS_X, 0, SCREEN_MAX_HEIGHT, 0, 0);\r
+ input_set_abs_params(ts->input_dev, ABS_Y, 0, SCREEN_MAX_WIDTH, 0, 0);\r
+ input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 255, 0, 0);\r
+#endif \r
+ \r
+ ret = input_register_device(ts->input_dev);\r
+ if (ret) {\r
+ dev_err(&client->dev,"Probe: Unable to register %s input device\n", ts->input_dev->name);\r
+ goto err_input_register_device_failed;\r
+ }\r
+ ts->bad_data = 0;\r
+// finger_list.length = 0;\r
+\r
+ client->irq = gpio_to_irq(pdata->gpio_pendown); //If not defined in client\r
+ if (client->irq)\r
+ {\r
+\r
+ #if INT_TRIGGER==0\r
+ #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_EDGE_RISING\r
+ #elif INT_TRIGGER==1\r
+ #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_EDGE_FALLING\r
+ #elif INT_TRIGGER==2\r
+ #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_LEVEL_LOW\r
+ #elif INT_TRIGGER==3\r
+ #define GT801_PLUS_IRQ_TYPE IRQ_TYPE_LEVEL_HIGH\r
+ #endif\r
+\r
+ ret = request_irq(client->irq, goodix_ts_irq_handler, GT801_PLUS_IRQ_TYPE,\r
+ client->name, ts);\r
+ if (ret != 0) {\r
+ dev_err(&client->dev,"Cannot allocate ts INT!ERRNO:%d\n", ret);\r
+ gpio_direction_input(pdata->gpio_pendown);\r
+ gpio_free(pdata->gpio_pendown);\r
+ goto err_gpio_request_failed;\r
+ }\r
+ else \r
+ { \r
+ disable_irq(client->irq);\r
+ ts->use_irq = 1;\r
+ dev_dbg(&client->dev,"Reques EIRQ %d succesd on GPIO:%d\n", client->irq, pdata->gpio_pendown);\r
+ } \r
+ }\r
+\r
+err_gpio_request_failed:\r
+ ts->power = goodix_ts_power;\r
+#ifdef CONFIG_HAS_EARLYSUSPEND\r
+ ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;\r
+ ts->early_suspend.suspend = goodix_ts_early_suspend;\r
+ ts->early_suspend.resume = goodix_ts_late_resume;\r
+ register_early_suspend(&ts->early_suspend);\r
+#endif\r
+ dev_info(&client->dev,"Start %s in %s mode\n",\r
+ ts->input_dev->name, ts->use_irq ? "interrupt" : "polling");\r
+\r
+ if (ts->use_irq)\r
+ {\r
+ enable_irq(client->irq);\r
+ }\r
+ else\r
+ {\r
+ hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);\r
+ ts->timer.function = goodix_ts_timer_func;\r
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);\r
+ }\r
+\r
+ i2c_end_cmd(ts);\r
+ return 0;\r
+\r
+err_init_godix_ts:\r
+ i2c_end_cmd(ts);\r
+ if(ts->use_irq)\r
+ {\r
+ ts->use_irq = 0;\r
+ free_irq(client->irq,ts);\r
+ gpio_direction_input(pdata->gpio_pendown);\r
+ gpio_free(pdata->gpio_pendown);\r
+ }\r
+ else \r
+ hrtimer_cancel(&ts->timer);\r
+\r
+err_input_register_device_failed:\r
+ input_free_device(ts->input_dev);\r
+\r
+err_input_dev_alloc_failed:\r
+ i2c_set_clientdata(client, NULL);\r
+err_i2c_failed: \r
+ kfree(ts);\r
+err_alloc_data_failed:\r
+err_check_functionality_failed:\r
+err_create_proc_entry:\r
+ return ret;\r
+}\r
+\r
+\r
+static int goodix_ts_remove(struct i2c_client *client)\r
+{\r
+ struct gt818_ts_data *ts = i2c_get_clientdata(client);\r
+ struct gt818_platform_data *pdata = client->dev.platform_data;\r
+\r
+#ifdef CONFIG_HAS_EARLYSUSPEND\r
+ unregister_early_suspend(&ts->early_suspend);\r
+#endif\r
+#ifdef CONFIG_TOUCHSCREEN_GOODIX_IAP\r
+ remove_proc_entry("goodix-update", NULL);\r
+#endif\r
+ if (ts && ts->use_irq) \r
+ {\r
+ gpio_direction_input(pdata->gpio_pendown);\r
+ gpio_free(pdata->gpio_pendown);\r
+ free_irq(client->irq, ts);\r
+ } \r
+ else if(ts)\r
+ hrtimer_cancel(&ts->timer);\r
+ \r
+ dev_notice(&client->dev,"The driver is removing...\n");\r
+ i2c_set_clientdata(client, NULL);\r
+ input_unregister_device(ts->input_dev);\r
+ kfree(ts);\r
+ return 0;\r
+}\r
+\r
+\r
+static int goodix_ts_suspend(struct i2c_client *client, pm_message_t mesg)\r
+{\r
+ int ret;\r
+ struct gt818_ts_data *ts = i2c_get_clientdata(client);\r
+\r
+ if (ts->use_irq)\r
+ disable_irq(client->irq);\r
+ else\r
+ hrtimer_cancel(&ts->timer);\r
+ //ret = cancel_work_sync(&ts->work);\r
+ //if(ret && ts->use_irq) \r
+ //enable_irq(client->irq);\r
+ if (ts->power) {\r
+ ret = ts->power(ts, 0);\r
+ if (ret < 0)\r
+ printk(KERN_ERR "goodix_ts_resume power off failed\n");\r
+ }\r
+ return 0;\r
+}\r
+\r
+\r
+static int goodix_ts_resume(struct i2c_client *client)\r
+{\r
+ int ret;\r
+ struct gt818_ts_data *ts = i2c_get_clientdata(client);\r
+\r
+ if (ts->power) {\r
+ ret = ts->power(ts, 1);\r
+ if (ret < 0)\r
+ printk(KERN_ERR "goodix_ts_resume power on failed\n");\r
+ }\r
+\r
+ if (ts->use_irq)\r
+ enable_irq(client->irq);\r
+ else\r
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);\r
+\r
+ return 0;\r
+}\r
+\r
+#ifdef CONFIG_HAS_EARLYSUSPEND\r
+static void goodix_ts_early_suspend(struct early_suspend *h)\r
+{\r
+ struct gt818_ts_data *ts;\r
+ ts = container_of(h, struct gt818_ts_data, early_suspend);\r
+ goodix_ts_suspend(ts->client, PMSG_SUSPEND);\r
+}\r
+\r
+static void goodix_ts_late_resume(struct early_suspend *h)\r
+{\r
+ struct gt818_ts_data *ts;\r
+ ts = container_of(h, struct gt818_ts_data, early_suspend);\r
+ goodix_ts_resume(ts->client);\r
+}\r
+#endif\r
+\r
+\r
+//only one client\r
+static const struct i2c_device_id goodix_ts_id[] = {\r
+ { GOODIX_I2C_NAME, 0 },\r
+ { }\r
+};\r
+\r
+\r
+static struct i2c_driver goodix_ts_driver = {\r
+ .probe = goodix_ts_probe,\r
+ .remove = goodix_ts_remove,\r
+#ifndef CONFIG_HAS_EARLYSUSPEND\r
+ .suspend = goodix_ts_suspend,\r
+ .resume = goodix_ts_resume,\r
+#endif\r
+ .id_table = goodix_ts_id,\r
+ .driver = {\r
+ .name = GOODIX_I2C_NAME,\r
+ .owner = THIS_MODULE,\r
+ },\r
+};\r
+\r
+\r
+static int __devinit goodix_ts_init(void)\r
+{\r
+ int ret;\r
+ goodix_wq = create_singlethread_workqueue("goodix_wq"); //create a work queue and worker thread\r
+ if (!goodix_wq) {\r
+ printk(KERN_ALERT "creat workqueue faiked\n");\r
+ return -ENOMEM;\r
+ }\r
+ ret = i2c_add_driver(&goodix_ts_driver);\r
+ return ret; \r
+}\r
+\r
+\r
+static void __exit goodix_ts_exit(void)\r
+{\r
+ printk(KERN_ALERT "Touchscreen driver of guitar exited.\n");\r
+ i2c_del_driver(&goodix_ts_driver);\r
+ if (goodix_wq)\r
+ destroy_workqueue(goodix_wq); //release our work queue\r
+}\r
+\r
+late_initcall(goodix_ts_init);\r
+module_exit(goodix_ts_exit);\r
+\r
+MODULE_DESCRIPTION("Goodix Touchscreen Driver");\r
+MODULE_AUTHOR("hhb@rock-chips.com")\r
+MODULE_LICENSE("GPL");\r
+\r
projects / firefly-linux-kernel-4.4.55.git / commitdiff