1 /* drivers/input/touchscreen/goodix_touch.c
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3 * Copyright (C) 2010 - 2011 Goodix, Inc.
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5 * This program is free software; you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation; either version 2 of the License, or
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8 * (at your option) any later version.
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10 * This program is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 #include <linux/kernel.h>
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17 #include <linux/module.h>
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18 #include <linux/time.h>
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19 #include <linux/delay.h>
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20 #include <linux/device.h>
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21 #include <linux/hrtimer.h>
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22 #include <linux/i2c.h>
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23 #include <linux/input.h>
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24 #include <linux/input/mt.h>
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26 #include <linux/interrupt.h>
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27 #include <linux/io.h>
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28 #include <linux/platform_device.h>
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29 #include <linux/gpio.h>
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30 #include <linux/version.h>
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31 #include <linux/slab.h>
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32 #include <linux/of_gpio.h>
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34 #include <linux/irq.h>
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35 #include <linux/syscalls.h>
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36 #include <linux/reboot.h>
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37 #include <linux/proc_fs.h>
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38 #include <linux/async.h>
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39 #include <linux/vmalloc.h>
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40 #include <linux/fs.h>
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41 #include <linux/string.h>
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42 #include <linux/completion.h>
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43 #include <asm/uaccess.h>
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45 #include "rk29_i2c_goodix.h"
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48 #define PEN_RELEASE 0
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49 #define PEN_DOWN_UP 2 //fjp
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51 static int dbg_thresd = 0;
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52 #define DBG(x...) do { if(unlikely(dbg_thresd)) printk(KERN_INFO x); } while (0)
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55 /*******************************************************
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57 Read data from the i2c slave device;
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58 This operation consisted of 2 i2c_msgs,the first msg used
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59 to write the operate address,the second msg used to read data.
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63 buf[0]:operate address.
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64 buf[1]~buf[len]:read data buffer.
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68 numbers of i2c_msgs to transfer
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69 *********************************************************/
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70 static int goodix_i2c_read_bytes(struct i2c_client *client, uint8_t *buf, int len)
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72 struct i2c_msg msgs[2];
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76 msgs[0].flags = client->flags;
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77 msgs[0].addr=client->addr;
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79 msgs[0].buf=&buf[0];
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80 msgs[0].scl_rate=200 * 1000;
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82 msgs[1].flags = client->flags | I2C_M_RD;
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83 msgs[1].addr=client->addr;
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85 msgs[1].buf=&buf[1];
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86 msgs[1].scl_rate=200 * 1000;
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88 //disable_irq(client->irq);
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91 ret=i2c_transfer(client->adapter,msgs, 2);
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95 //enable_irq(client->irq);
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99 /*******************************************************
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101 write data to the i2c slave device.
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104 client: i2c device.
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105 buf[0]:operate address.
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106 buf[1]~buf[len]:write data buffer.
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107 len:operate length.
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110 numbers of i2c_msgs to transfer.
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111 *********************************************************/
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112 static int goodix_i2c_write_bytes(struct i2c_client *client,uint8_t *data,int len)
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114 struct i2c_msg msg;
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118 msg.flags=!I2C_M_RD;
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119 msg.addr=client->addr;
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122 msg.scl_rate=200 * 1000;
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124 //disable_irq(client->irq);
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127 ret=i2c_transfer(client->adapter,&msg, 1);
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131 //enable_irq(client->irq);
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135 static int goodix_config_ok(struct rk_ts_data *ts)
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138 unsigned int w,h, n;
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139 uint8_t rd_cfg_buf[7] = {0x66,};
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141 ret = goodix_i2c_read_bytes(ts->client, rd_cfg_buf, 7);
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143 w = (rd_cfg_buf[1]<<8) + rd_cfg_buf[2];
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144 h = (rd_cfg_buf[3]<<8) + rd_cfg_buf[4];
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147 #ifdef CONFIG_ARCH_RK29
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148 if((ret < 0) || (w != TS_MAX_X) || (h != TS_MAX_Y) || (n != 10))
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150 if((ret < 0) || (w != ts->abs_x_max) || (h != ts->abs_y_max) || (n != 170))
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156 ts->max_touch_num = n;
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158 printk("goodix_ts_init: X_MAX = %d,Y_MAX = %d,MAX_TOUCH_NUM = %d\n",ts->abs_x_max,ts->abs_y_max,ts->max_touch_num);
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162 /*******************************************************
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164 Goodix touchscreen initialize function.
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167 ts: i2c client private struct.
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170 Executive outcomes.0---succeed.
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171 *******************************************************/
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172 static int goodix_init_panel(struct rk_ts_data *ts)
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174 int ret=-1, retry = 10;
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175 uint8_t rd_cfg_buf[7] = {0x66,};
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176 uint8_t *config_info;
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180 uint8_t config_info_1024_768[] = {
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181 0x65,0x02,0x04,0x00,0x03,0x00,0x0A,0x22,0x1E,0xE7,0x32,0x05,0x08,0x10,0x4C,
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182 0x41,0x41,0x20,0x09,0x00,0xA0,0xA0,0x3C,0x64,0x0E,0x0D,0x0C,0x0B,0x0A,0x09,
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183 0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x01,0x00,0x1D,0x1C,0x1B,0x1A,0x19,0x18,
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184 0x17,0x16,0x15,0x14,0x13,0x12,0x11,0x10,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,
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185 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x2B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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186 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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189 #ifdef CONFIG_ARCH_RK29
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190 uint8_t config_info_1280_800[] = {
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191 0x65,0x02,0x05,0x00,0x03,0x20,0x0A,0x22,0x1E,0xE7,0x32,0x05,0x08,0x10,0x4C,
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192 0x41,0x41,0x20,0x07,0x00,0xA0,0xA0,0x46,0x64,0x0E,0x0D,0x0C,0x0B,0x0A,0x09,
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193 0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x01,0x00,0x1D,0x1C,0x1B,0x1A,0x19,0x18,
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194 0x17,0x16,0x15,0x14,0x13,0x12,0x11,0x10,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,
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195 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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196 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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199 uint8_t config_info_1280_800[] = {
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200 0x65,0xA2,0x05,0x00,0x03,0x20,0xAA,0x22,0x1E,0xE7,0x32,0x05,0x08,0x10,0x4C,
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201 0x42,0x42,0x20,0x00,0x09,0x80,0x80,0x32,0x46,0x0E,0x0D,0x0C,0x0B,0x0A,0x09,
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202 0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x01,0x00,0x1D,0x1C,0x1B,0x1A,0x19,0x18,
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203 0x17,0x16,0x15,0x14,0x13,0x12,0x11,0x10,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,
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204 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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205 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
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208 uint8_t config_info_default[] = {
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209 0x65,0x02,0x05,0x00,0x03,0x20,0x0A,0x22,0x1E,0xE7,0x32,0x05,0x08,0x10,0x4C,
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210 0x42,0x42,0x20,0x00,0x00,0x89,0x89,0x3C,0x64,0x0E,0x0D,0x0C,0x0B,
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211 0x0A,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x01,0x00,0x1D,0x1C,
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212 0x1B,0x1A,0x19,0x18,0x17,0x16,0x15,0x14,0x13,0x12,0x11,0x10,0x0F,
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213 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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214 0x2B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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215 0x00,0x00,0x00,0x00
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218 if (ts->abs_x_max == 1280 && ts->abs_y_max == 800) {
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219 config_info = config_info_1280_800;
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220 config_len = ARRAY_SIZE(config_info_1280_800);
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221 } else if (ts->abs_x_max == 1024 && ts->abs_y_max == 786) {
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222 config_info = config_info_1024_768;
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223 config_len = ARRAY_SIZE(config_info_1024_768);
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225 config_info = config_info_default;
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226 config_len = ARRAY_SIZE(config_info_default);
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228 while(--retry && (goodix_config_ok(ts) < 0)){
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229 ret = goodix_i2c_write_bytes(ts->client, config_info, config_len);
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231 printk("goodix write cfg info err, retry %d\n", retry);
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237 printk("goodix write cfg info err\n");
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242 rd_cfg_buf[0] = 0x6e;
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243 rd_cfg_buf[1] = 0x00;
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244 goodix_i2c_read_bytes(ts->client, rd_cfg_buf, 2);
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245 if((rd_cfg_buf[1]&0x0f)==0x0f)
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247 dev_info(&ts->client->dev, "Need int wake up from green mode!\n");
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254 //fjp add ===============================
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255 static bool goodix_get_status(char *p1,int*p2)
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257 bool status = PEN_DOWN;
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258 if((*p2==PEN_DOWN) && (*p1==PEN_RELEASE))
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260 *p2 = PEN_DOWN_UP; //¸Õ¸Õµ¯Æð
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261 status = PEN_RELEASE;
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263 else if((*p2==PEN_RELEASE) && (*p1==PEN_RELEASE))
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266 status = PEN_RELEASE;
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275 //===================================
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276 /*******************************************************
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278 Read goodix touchscreen version function.
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281 ts: i2c client private struct.
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284 Executive outcomes.0---succeed.
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285 *******************************************************/
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286 static int goodix_read_version(struct rk_ts_data *ts, char **version)
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288 int ret = -1, count = 0;
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289 char *version_data;
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292 *version = (char *)vmalloc(18);
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293 version_data = *version;
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297 memset(version_data, 0, sizeof(version_data));
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298 version_data[0]=240;
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299 ret=goodix_i2c_read_bytes(ts->client,version_data, 17);
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302 version_data[17]='\0';
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308 if((*p > 122) || (*p < 48 && *p != 32) || (*p >57 && *p < 65)
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309 ||(*p > 90 && *p < 97 && *p != '_')) //check illeqal character
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311 }while(*++p != '\0' );
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318 static int last_touch_num = -1;
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319 static void goodix_get_touch_info(struct rk_ts_data *ts,char *point_num,struct rk_touch_info* info_buf)
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321 uint8_t point_data[(1-READ_COOR_ADDR)+1+2+5*MAX_FINGER_NUM+1]={ 0 }; //read address(1byte)+key index(1byte)+point mask(2bytes)+5bytes*MAX_FINGER_NUM+coor checksum(1byte)
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322 uint8_t check_sum = 0;
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324 uint16_t finger_current = 0;
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325 uint16_t finger_bit = 0;
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326 unsigned int count = 0, point_count = 0;
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327 unsigned char touch_num = 0;
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328 uint8_t chksum_err = 0;
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329 unsigned int position = 0;
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330 uint8_t track_id[MAX_FINGER_NUM] = {0};
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333 point_data[0] = READ_COOR_ADDR; //read coor address
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337 printk("goodix ts or info_buf is null\n");
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341 ret=goodix_i2c_read_bytes(ts->client, point_data, sizeof(point_data)/sizeof(point_data[0]));
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344 printk("goodix read error\n");
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346 finger_current = (point_data[3 - READ_COOR_ADDR]<<8) + point_data[2 - READ_COOR_ADDR];
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348 DBG("finger_current:%d ==== max_touch_num:%d\n", finger_current,ts->max_touch_num);//add by fjp 2010-9-28
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354 finger_bit = finger_current;
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355 for(count = 0; (finger_bit != 0) && (count < ts->max_touch_num); count++)//cal how many point touch currntly
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357 if(finger_bit & 0x01)
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359 track_id[count] = PEN_DOWN;
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364 touch_num = point_count;
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366 check_sum = point_data[2 - READ_COOR_ADDR] + point_data[3 - READ_COOR_ADDR]; //cal coor checksum
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367 count = 4 - READ_COOR_ADDR;
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368 for(point_count *= 5; point_count > 0; point_count--)
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369 check_sum += point_data[count++];
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370 check_sum += point_data[count];
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371 if(check_sum != 0) //checksum verify error
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373 printk("coor checksum error!\n");
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381 //printk("current point num:%d\n",touch_num);
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382 *point_num = touch_num;
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383 if(touch_num < last_touch_num) //some flinger release
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385 //printk("%d flinger release\n",last_touch_num-touch_num);
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386 /*for(index = touch_num; index < last_touch_num; index++)
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387 info_buf[index].status = 0;*/
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388 *point_num = last_touch_num;
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389 touch_num = last_touch_num;
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391 last_touch_num = touch_num;
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392 for(index = 0; index < touch_num; index++)
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394 if(goodix_get_status(&track_id[index],&info_buf[index].status))
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396 position = 4 - READ_COOR_ADDR + 5*(temp++);
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397 info_buf[index].x = (unsigned int) (point_data[position]<<8) + (unsigned int)( point_data[position+1]);
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398 info_buf[index].y = (unsigned int)(point_data[position+2]<<8) + (unsigned int) (point_data[position+3]);
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399 info_buf[index].press = (unsigned int) (point_data[position+4]);
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405 /*******************************************************
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407 External interrupt service routine.
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410 irq: interrupt number.
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411 dev_id: private data pointer.
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414 irq execute status.
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415 *******************************************************/
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416 static irqreturn_t rk_ts_irq_handler(int irq, void *dev_id)
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418 struct rk_ts_data *ts = (struct rk_ts_data*)dev_id;
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424 if(ts->get_touch_info)
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426 ts->get_touch_info(ts,&point_num,ts->info_buf);
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428 for(i=0; i< point_num; i++)
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430 DBG("info_buf[i].status =====%d\n",ts->info_buf[i].status);
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431 if (ts->info_buf[i].status==PEN_DOWN_UP)
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433 ts->info_buf[i].status=PEN_RELEASE;
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434 DBG("the key %d is up------\n",i);
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435 input_mt_slot(ts->input_dev, i);
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436 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false);
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439 if (ts->info_buf[i].status==PEN_DOWN)
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441 input_mt_slot(ts->input_dev, i);
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442 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
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443 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, ts->info_buf[i].press);
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444 input_report_abs(ts->input_dev, ABS_MT_POSITION_X, ts->info_buf[i].x);
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445 input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, ts->info_buf[i].y);
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446 DBG("touch point %d %d >>x:%d>>y:%d\n",i,ts->info_buf[i].status,ts->info_buf[i].x,ts->info_buf[i].y);//add by fjp 2010-9-28
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449 input_sync(ts->input_dev);
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450 touch_down = gpio_get_value(ts->irq_pin) == 0;
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453 DBG("touch down .............\n");//add by fjp 2010-9-28
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454 usleep_range(10000, 10000);
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456 } while (touch_down);
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458 DBG("touch up>>x:%d>>y:%d\n",ts->info_buf[0].x,ts->info_buf[0].y);//add by fjp 2010-9-28
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459 /*input_mt_slot(ts->input_dev, 0);
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460 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
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461 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
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463 input_mt_slot(ts->input_dev, 0);
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464 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false);*/
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466 DBG("point_num+++++++++++ = %d\n", point_num);//add by fjp 2010-9-28
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467 for(i=0; i< point_num; i++)
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469 // printk("info_buf[i].status +++++++%d\n",ts->info_buf[i].status);
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470 if(ts->info_buf[i].status)
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472 input_mt_slot(ts->input_dev, i);//°´ÐòºÅÉϱ¨
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473 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, false);
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474 //input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
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475 ts->info_buf[i].status= PEN_RELEASE;
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477 DBG("release+++++++++++ = %d\n", i);//add by fjp 2010-9-28
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480 input_sync(ts->input_dev);
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481 ts->pendown =PEN_RELEASE;
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482 last_touch_num = 0;
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484 return IRQ_HANDLED;
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487 static int rk_ts_suspend(struct i2c_client *client, pm_message_t mesg)
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490 struct rk_ts_data *ts = i2c_get_clientdata(client);
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492 disable_irq(ts->irq);
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495 DBG("%s.....line=%d\n",__func__,__LINE__);
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496 ret = ts->power(ts, 0);
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498 printk(KERN_ERR "goodix_ts_resume power off failed\n");
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504 static int rk_ts_resume(struct i2c_client *client)
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507 struct rk_ts_data *ts = i2c_get_clientdata(client);
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510 DBG("%s.....line=%d\n",__func__,__LINE__);
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511 ret = ts->power(ts, 1);
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513 printk(KERN_ERR "goodix_ts_resume power on failed\n");
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516 enable_irq(ts->irq);
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522 static int rk_ts_early_suspend(struct tp_device *tp_d)
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524 struct rk_ts_data *ts;
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525 ts = container_of(tp_d, struct rk_ts_data, tp);
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526 rk_ts_suspend(ts->client, PMSG_SUSPEND);
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530 static int rk_ts_early_resume(struct tp_device *tp_d)
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532 struct rk_ts_data *ts;
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533 ts = container_of(tp_d, struct rk_ts_data, tp);
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534 rk_ts_resume(ts->client);
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539 /*******************************************************
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541 Goodix touchscreen power manage function.
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544 on: power status.0---suspend;1---resume.
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547 Executive outcomes.-1---i2c transfer error;0---succeed.
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548 *******************************************************/
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549 static int goodix_ts_power(struct rk_ts_data * ts, int on)
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552 unsigned char i2c_control_buf[2] = {80, 1}; //suspend cmd
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555 if(on != 0 && on !=1)
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557 printk("%s: Cant't support this command.", rk_ts_name);
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561 if(on == 0)//suspend
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565 ret = goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2);
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568 printk("touch goodix Send suspend cmd successed \n");
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577 else if(on == 1)//resume
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579 printk("touch goodix int resume\n");
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580 gpio_set_value(ts->rst_pin, ts->rst_val);
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582 gpio_set_value(ts->rst_pin, !ts->rst_val);
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589 static int goodix_input_params_init(struct rk_ts_data *ts)
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592 ts->input_dev = devm_input_allocate_device(&ts->client->dev);
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593 if (ts->input_dev == NULL) {
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595 printk(KERN_ALERT "Failed to allocate input device\n");
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600 __set_bit(INPUT_PROP_DIRECT, ts->input_dev->propbit);
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601 __set_bit(EV_ABS, ts->input_dev->evbit);
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603 input_mt_init_slots(ts->input_dev, ts->max_touch_num, 0);
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604 input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
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605 input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, ts->abs_x_max, 0, 0);
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606 input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, ts->abs_y_max, 0, 0);
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607 sprintf(ts->phys, "input/rkts");
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608 ts->input_dev->name = rk_ts_name;
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609 ts->input_dev->phys = ts->phys;
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610 ts->input_dev->id.bustype = BUS_I2C;
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611 ts->input_dev->id.vendor = 0xDEAD;
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612 ts->input_dev->id.product = 0xBEEF;
\r
613 ts->input_dev->id.version = 10427; //screen firmware version
\r
615 ret = input_register_device(ts->input_dev);
\r
617 printk(KERN_ALERT "Probe: Unable to register %s input device\n", ts->input_dev->name);
\r
625 #ifdef CONFIG_TOUCHSCREEN_GOODIX_IAP
\r
626 static const struct file_operations goodix_proc_fops = {
\r
627 .read = goodix_update_read,
\r
628 .write = goodix_update_write,
\r
632 static int goodix_ts_init(struct rk_ts_data *ts)
\r
635 char *version_info = NULL;
\r
637 char test_data = 1;
\r
639 for(retry=0;retry < 30; retry++) //test goodix
\r
641 ret =goodix_i2c_write_bytes(ts->client, &test_data, 1);
\r
647 printk(KERN_INFO "I2C communication ERROR!Goodix touchscreen driver become invalid\n");
\r
652 ret=goodix_init_panel(ts);
\r
654 printk("goodix panel init fail\n");
\r
657 ret = goodix_read_version(ts, &version_info);
\r
660 printk(KERN_INFO"Read version data failed!\n");
\r
664 printk("goodix_ts_init: version %s\n", (version_info+1));
\r
666 vfree(version_info);
\r
667 #ifdef CONFIG_TOUCHSCREEN_GOODIX_IAP
\r
668 goodix_proc_entry = proc_create("goodix-update", 0666, NULL, &goodix_proc_fops);
\r
669 if(goodix_proc_entry == NULL)
\r
671 printk("Couldn't create proc entry!\n");
\r
677 printk("goodix_ts_init: create proc entry success!\n");
\r
678 goodix_proc_entry->write_proc = goodix_update_write;
\r
679 goodix_proc_entry->read_proc = goodix_update_read;
\r
680 //goodix_proc_entry->owner = THIS_MODULE;
\r
686 /*******************************************************
\r
688 Goodix touchscreen probe function.
\r
691 client: i2c device struct.
\r
695 Executive outcomes. 0---succeed.
\r
696 *******************************************************/
\r
697 static int rk_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
\r
700 struct rk_ts_data *ts;
\r
701 struct device_node *np = client->dev.of_node;
\r
702 enum of_gpio_flags rst_flags, pwr_flags;
\r
703 unsigned long irq_flags;
\r
706 printk(KERN_INFO "Install touch driver.\n");
\r
707 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
\r
709 dev_err(&client->dev, "Must have I2C_FUNC_I2C.\n");
\r
713 ts = devm_kzalloc(&client->dev, sizeof(struct rk_ts_data), GFP_KERNEL);
\r
715 dev_err(&client->dev, "alloc for struct rk_ts_data fail\n");
\r
720 dev_err(&client->dev, "no device tree\n");
\r
723 ts->irq_pin = of_get_named_gpio_flags(np, "touch-gpio", 0, (enum of_gpio_flags *)&irq_flags);
\r
724 ts->rst_pin = of_get_named_gpio_flags(np, "reset-gpio", 0, &rst_flags);
\r
725 ts->pwr_pin = of_get_named_gpio_flags(np, "power-gpio", 0, &pwr_flags);
\r
726 if (of_property_read_u32(np, "max-x", &val)) {
\r
727 dev_err(&client->dev, "no max-x defined\n");
\r
730 ts->abs_x_max = val;
\r
731 if (of_property_read_u32(np, "max-y", &val)) {
\r
732 dev_err(&client->dev, "no max-y defined\n");
\r
735 ts->abs_y_max = val;
\r
736 ts->pendown =PEN_RELEASE;
\r
737 ts->client = client;
\r
738 ts->ts_init = goodix_ts_init;
\r
739 ts->power = goodix_ts_power;
\r
740 ts->get_touch_info = goodix_get_touch_info;
\r
741 ts->input_parms_init = goodix_input_params_init;
\r
743 if (gpio_is_valid(ts->pwr_pin)) {
\r
744 ret = devm_gpio_request_one(&client->dev, ts->pwr_pin, (pwr_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH, "goodix power pin");
\r
746 dev_err(&client->dev, "goodix power error\n");
\r
751 dev_info(&client->dev, "power pin invalid\n");
\r
754 if (gpio_is_valid(ts->rst_pin)) {
\r
755 ts->rst_val = (rst_flags & OF_GPIO_ACTIVE_LOW) ? 0 : 1;
\r
756 ret = devm_gpio_request_one(&client->dev, ts->rst_pin, (rst_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, "goodix reset pin");
\r
758 dev_err(&client->dev, "goodix gpio_request error\n");
\r
763 dev_info(&client->dev, "reset pin invalid\n");
\r
768 ret = ts->ts_init(ts);
\r
771 printk(KERN_ALERT "rk ts init fail\n");
\r
776 ts->info_buf= devm_kzalloc(&client->dev, ts->max_touch_num*sizeof(struct rk_touch_info), GFP_KERNEL);
\r
779 dev_err(&client->dev, "alloc for rk_touch_info fail\n");
\r
783 if(ts->input_parms_init)
\r
785 ts->input_parms_init(ts);
\r
788 i2c_connect_client = client;
\r
790 ts->tp.tp_resume = rk_ts_early_resume;
\r
791 ts->tp.tp_suspend = rk_ts_early_suspend;
\r
792 tp_register_fb(&ts->tp);
\r
794 i2c_set_clientdata(client, ts);
\r
796 ts->irq=gpio_to_irq(ts->irq_pin); //If not defined in client
\r
799 ret = devm_request_threaded_irq(&client->dev, ts->irq, NULL, rk_ts_irq_handler, irq_flags | IRQF_ONESHOT, client->name, ts);
\r
801 printk(KERN_ALERT "Cannot allocate ts INT!ERRNO:%d\n", ret);
\r
804 //disable_irq(ts->irq);
\r
806 printk("goodix_ts_init: probe successfully!\n");
\r
811 tp_unregister_fb(&ts->tp);
\r
812 i2c_set_clientdata(client, NULL);
\r
817 /*******************************************************
\r
819 Goodix touchscreen driver release function.
\r
822 client: i2c device struct.
\r
825 Executive outcomes. 0---succeed.
\r
826 *******************************************************/
\r
827 static int rk_ts_remove(struct i2c_client *client)
\r
829 struct rk_ts_data *ts = i2c_get_clientdata(client);
\r
830 tp_unregister_fb(&ts->tp);
\r
832 #ifdef CONFIG_TOUCHSCREEN_GOODIX_IAP
\r
833 remove_proc_entry("goodix-update", NULL);
\r
836 dev_notice(&client->dev,"The driver is removing...\n");
\r
837 i2c_set_clientdata(client, NULL);
\r
841 static void rk_ts_shutdown(struct i2c_client *client)
\r
843 struct rk_ts_data *ts = i2c_get_clientdata(client);
\r
845 tp_unregister_fb(&ts->tp);
\r
849 //******************************Begin of firmware update surpport*******************************
\r
850 #ifdef CONFIG_TOUCHSCREEN_GOODIX_IAP
\r
852 @brief CRC cal proc,include : Reflect,init_crc32_table,GenerateCRC32
\r
853 @param global var oldcrc32
\r
856 static unsigned int Reflect(unsigned long int ref, char ch)
\r
858 unsigned int value=0;
\r
860 for(i = 1; i < (ch + 1); i++)
\r
863 value |= 1 << (ch - i);
\r
868 /*---------------------------------------------------------------------------------------------------------*/
\r
869 /* CRC Check Program INIT */
\r
870 /*---------------------------------------------------------------------------------------------------------*/
\r
871 static void init_crc32_table(void)
\r
874 unsigned int t1,t2;
\r
877 for(i = 0; i <= 0xFF; i++)
\r
879 temp=Reflect(i, 8);
\r
880 crc32_table[i]= temp<< 24;
\r
881 for (j = 0; j < 8; j++)
\r
884 flag=crc32_table[i]&0x80000000;
\r
885 t1=(crc32_table[i] << 1);
\r
890 crc32_table[i] =t1^t2 ;
\r
893 crc32_table[i] = Reflect(crc32_table[i], 32);
\r
896 /*---------------------------------------------------------------------------------------------------------*/
\r
897 /* CRC main Program */
\r
898 /*---------------------------------------------------------------------------------------------------------*/
\r
899 static void GenerateCRC32(unsigned char * buf, unsigned int len)
\r
904 for (i = 0; i != len; ++i)
\r
906 t = (oldcrc32 ^ buf[i]) & 0xFF;
\r
907 oldcrc32 = ((oldcrc32 >> 8) & 0xFFFFFF) ^ crc32_table[t];
\r
911 static struct file * update_file_open(char * path, mm_segment_t * old_fs_p)
\r
913 struct file * filp = NULL;
\r
916 filp = filp_open(path, O_RDONLY, 0644);
\r
918 if(!filp || IS_ERR(filp))
\r
923 errno = PTR_ERR(filp);
\r
924 printk(KERN_ERR "The update file for Guitar open error.\n");
\r
927 *old_fs_p = get_fs();
\r
930 filp->f_op->llseek(filp,0,0);
\r
934 static void update_file_close(struct file * filp, mm_segment_t old_fs)
\r
938 filp_close(filp, NULL);
\r
940 static int update_get_flen(char * path)
\r
942 struct file * file_ck = NULL;
\r
943 mm_segment_t old_fs;
\r
946 file_ck = update_file_open(path, &old_fs);
\r
947 if(file_ck == NULL)
\r
950 length = file_ck->f_op->llseek(file_ck, 0, SEEK_END);
\r
951 //printk("File length: %d\n", length);
\r
954 update_file_close(file_ck, old_fs);
\r
957 static int update_file_check(char * path)
\r
959 unsigned char buffer[64] = { 0 } ;
\r
960 struct file * file_ck = NULL;
\r
961 mm_segment_t old_fs;
\r
962 int count, ret, length ;
\r
964 file_ck = update_file_open(path, &old_fs);
\r
967 printk("File Path:%s\n", path);
\r
969 if(file_ck == NULL)
\r
970 return -ERROR_NO_FILE;
\r
972 length = file_ck->f_op->llseek(file_ck, 0, SEEK_END);
\r
973 #ifdef GUITAR_MESSAGE
\r
974 printk(KERN_INFO "gt801 update: File length: %d\n",length);
\r
976 if(length <= 0 || (length%4) != 0)
\r
978 update_file_close(file_ck, old_fs);
\r
979 return -ERROR_FILE_TYPE;
\r
982 //set file point to the begining of the file
\r
983 file_ck->f_op->llseek(file_ck, 0, SEEK_SET);
\r
984 oldcrc32 = 0xFFFFFFFF;
\r
985 init_crc32_table();
\r
988 ret = file_ck->f_op->read(file_ck, buffer, sizeof(buffer), &file_ck->f_pos);
\r
991 for(count = 0; count < ret; count++)
\r
992 GenerateCRC32(&buffer[count],1);
\r
996 update_file_close(file_ck, old_fs);
\r
997 return -ERROR_FILE_READ;
\r
1001 oldcrc32 = ~oldcrc32;
\r
1002 #ifdef GUITAR_MESSAGE
\r
1003 printk("CRC_Check: %u\n", oldcrc32);
\r
1005 update_file_close(file_ck, old_fs);
\r
1009 unsigned char wait_slave_ready(struct rk_ts_data *ts, unsigned short *timeout)
\r
1011 unsigned char i2c_state_buf[2] = {ADDR_STA, UNKNOWN_ERROR};
\r
1013 while(*timeout < MAX_TIMEOUT)
\r
1015 ret = goodix_i2c_read_bytes(ts->client, i2c_state_buf, 2);
\r
1017 return ERROR_I2C_TRANSFER;
\r
1018 if(i2c_state_buf[1] & SLAVE_READY)
\r
1020 return i2c_state_buf[1];
\r
1029 static int goodix_update_write(struct file *filp, const char __user *buff, unsigned long len, void *data)
\r
1031 unsigned char cmd[220];
\r
1034 static unsigned char update_path[100];
\r
1035 static unsigned short time_count = 0;
\r
1036 static unsigned int file_len = 0;
\r
1038 unsigned char i2c_control_buf[2] = {ADDR_CMD, 0};
\r
1039 unsigned char i2c_states_buf[2] = {ADDR_STA, 0};
\r
1040 unsigned char i2c_data_buf[PACK_SIZE+1+8] = {ADDR_DAT,};
\r
1041 //unsigned char i2c_rd_buf[1+4+PACK_SIZE+4];
\r
1042 unsigned char i2c_rd_buf[160];
\r
1043 unsigned char retries = 0;
\r
1044 unsigned int rd_len;
\r
1045 unsigned char i = 0;
\r
1046 static unsigned char update_need_config = 0;
\r
1048 unsigned char checksum_error_times = 0;
\r
1049 #ifdef UPDATE_NEW_PROTOCOL
\r
1050 unsigned int frame_checksum = 0;
\r
1051 unsigned int frame_number = 0;
\r
1053 unsigned char send_crc = 0;
\r
1056 struct file * file_data = NULL;
\r
1057 mm_segment_t old_fs;
\r
1058 struct rk_ts_data *ts;
\r
1060 ts = i2c_get_clientdata(i2c_connect_client);
\r
1064 if(copy_from_user(&cmd, buff, len))
\r
1070 case STEP_SET_PATH:
\r
1071 printk(KERN_INFO"Write cmd is:%d,cmd arg is:%s,write len is:%ld\n",cmd[0], &cmd[1], len);
\r
1072 memset(update_path, 0, 100);
\r
1073 strncpy(update_path, cmd+1, 100);
\r
1074 if(update_path[0] == 0)
\r
1078 case STEP_CHECK_FILE:
\r
1079 printk(KERN_INFO"Begin to firmware update ......\n");
\r
1080 ret = update_file_check(update_path);
\r
1083 printk(KERN_INFO"fialed to check update file!\n");
\r
1087 printk(KERN_INFO"Update check file success!\n");
\r
1089 case STEP_WRITE_SYN:
\r
1090 printk(KERN_INFO"STEP1:Write synchronization signal!\n");
\r
1091 i2c_control_buf[1] = UPDATE_START;
\r
1092 ret = goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2);
\r
1095 ret = ERROR_I2C_TRANSFER;
\r
1098 //the time include time(APROM -> LDROM) and time(LDROM init)
\r
1101 case STEP_WAIT_SYN:
\r
1102 printk(KERN_INFO"STEP2:Wait synchronization signal!\n");
\r
1103 while(retries < MAX_I2C_RETRIES)
\r
1105 i2c_states_buf[1] = UNKNOWN_ERROR;
\r
1106 ret = goodix_i2c_read_bytes(ts->client, i2c_states_buf, 2);
\r
1107 printk(KERN_INFO"The read byte is:%d\n", i2c_states_buf[1]);
\r
1108 if(i2c_states_buf[1] & UPDATE_START)
\r
1110 if(i2c_states_buf[1] & NEW_UPDATE_START)
\r
1112 #ifdef UPDATE_NEW_PROTOCOL
\r
1113 update_need_config = 1;
\r
1125 if((retries >= MAX_I2C_RETRIES) && (!(i2c_states_buf[1] & UPDATE_START)))
\r
1133 case STEP_WRITE_LENGTH:
\r
1134 printk(KERN_INFO"STEP3:Write total update file length!\n");
\r
1135 file_len = update_get_flen(update_path);
\r
1138 printk(KERN_INFO"get update file length failed!\n");
\r
1142 i2c_data_buf[1] = (file_len>>24) & 0xff;
\r
1143 i2c_data_buf[2] = (file_len>>16) & 0xff;
\r
1144 i2c_data_buf[3] = (file_len>>8) & 0xff;
\r
1145 i2c_data_buf[4] = file_len & 0xff;
\r
1147 ret = goodix_i2c_write_bytes(ts->client, i2c_data_buf, 5);
\r
1150 ret = ERROR_I2C_TRANSFER;
\r
1154 case STEP_WAIT_READY:
\r
1155 printk(KERN_INFO"STEP4:Wait slave ready!\n");
\r
1156 ret = wait_slave_ready(ts, &time_count);
\r
1157 if(ret == ERROR_I2C_TRANSFER)
\r
1163 printk(KERN_INFO"Slave ready!\n");
\r
1165 case STEP_WRITE_DATA:
\r
1166 #ifdef UPDATE_NEW_PROTOCOL
\r
1167 printk(KERN_INFO"STEP5:Begin to send file data use NEW protocol!\n");
\r
1168 file_data = update_file_open(update_path, &old_fs);
\r
1169 if(file_data == NULL)
\r
1174 while(file_len >= 0)
\r
1176 i2c_data_buf[0] = ADDR_DAT;
\r
1177 rd_len = (file_len >= PACK_SIZE) ? PACK_SIZE : file_len;
\r
1178 frame_checksum = 0;
\r
1181 ret = file_data->f_op->read(file_data, i2c_data_buf+1+4, rd_len, &file_data->f_pos);
\r
1184 printk("[GOODiX_ISP_NEW]:Read File Data Failed!\n");
\r
1187 i2c_data_buf[1] = (frame_number>>24)&0xff;
\r
1188 i2c_data_buf[2] = (frame_number>>16)&0xff;
\r
1189 i2c_data_buf[3] = (frame_number>>8)&0xff;
\r
1190 i2c_data_buf[4] = frame_number&0xff;
\r
1192 frame_checksum = 0;
\r
1193 for(i=0; i<rd_len; i++)
\r
1195 frame_checksum += i2c_data_buf[5+i];
\r
1197 frame_checksum = 0 - frame_checksum;
\r
1198 i2c_data_buf[5+rd_len+0] = frame_checksum&0xff;
\r
1199 i2c_data_buf[5+rd_len+1] = (frame_checksum>>8)&0xff;
\r
1200 i2c_data_buf[5+rd_len+2] = (frame_checksum>>16)&0xff;
\r
1201 i2c_data_buf[5+rd_len+3] = (frame_checksum>>24)&0xff;
\r
1204 printk(KERN_INFO"[GOODiX_ISP_NEW]:%d\n", file_len);
\r
1205 ret = goodix_i2c_write_bytes(ts->client, i2c_data_buf, 1+4+rd_len+4);
\r
1209 printk("[GOODiX_ISP_NEW]:Write File Data Failed!Return:%d\n", ret);
\r
1213 memset(i2c_rd_buf, 0x00, 1+4+rd_len+4);
\r
1214 ret = goodix_i2c_read_bytes(ts->client, i2c_rd_buf, 1+4+rd_len+4);
\r
1217 printk("[GOODiX_ISP_NEW]:Read File Data Failed!Return:%d\n", ret);
\r
1220 for(i=1; i<(1+4+rd_len+4); i++) //check communication
\r
1222 if(i2c_rd_buf[i] != i2c_data_buf[i])
\r
1230 i2c_control_buf[0] = ADDR_CMD;
\r
1231 i2c_control_buf[1] = 0x03;
\r
1232 goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2); //communication error
\r
1233 printk("[GOODiX_ISP_NEW]:File Data Frame readback check Error!\n");
\r
1237 i2c_control_buf[1] = 0x04; //let LDROM write flash
\r
1238 goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2);
\r
1241 //Wait for slave ready signal.and read the checksum
\r
1242 ret = wait_slave_ready(ts, &time_count);
\r
1243 if((ret & CHECKSUM_ERROR)||(!i))
\r
1247 printk("[GOODiX_ISP_NEW]:File Data Frame checksum Error!\n");
\r
1249 checksum_error_times++;
\r
1251 if(checksum_error_times > 20) //max retry times.
\r
1255 checksum_error_times = 0;
\r
1256 if(ret & (FRAME_ERROR))
\r
1258 printk("[GOODiX_ISP_NEW]:File Data Frame Miss!\n");
\r
1261 if(ret == ERROR_I2C_TRANSFER)
\r
1267 if(file_len < PACK_SIZE)
\r
1269 update_file_close(file_data, old_fs);
\r
1272 file_len -= rd_len;
\r
1273 }//end of while((file_len >= 0))
\r
1276 printk(KERN_INFO"STEP5:Begin to send file data use OLD protocol!\n");
\r
1277 file_data = update_file_open(update_path, &old_fs);
\r
1278 if(file_data == NULL) //file_data has been opened at the last time
\r
1282 while((file_len >= 0) && (!send_crc))
\r
1284 printk(KERN_INFO"[GOODiX_ISP_OLD]:%d\n", file_len);
\r
1285 i2c_data_buf[0] = ADDR_DAT;
\r
1286 rd_len = (file_len >= PACK_SIZE) ? PACK_SIZE : file_len;
\r
1289 ret = file_data->f_op->read(file_data, i2c_data_buf+1, rd_len, &file_data->f_pos);
\r
1295 if(file_len < PACK_SIZE)
\r
1298 update_file_close(file_data, old_fs);
\r
1299 i2c_data_buf[file_len+1] = oldcrc32&0xff;
\r
1300 i2c_data_buf[file_len+2] = (oldcrc32>>8)&0xff;
\r
1301 i2c_data_buf[file_len+3] = (oldcrc32>>16)&0xff;
\r
1302 i2c_data_buf[file_len+4] = (oldcrc32>>24)&0xff;
\r
1303 ret = goodix_i2c_write_bytes(ts->client, i2c_data_buf, (file_len+1+4));
\r
1307 printk("[GOODiX_ISP_OLD]:Write File Data Failed!Return:%d\n", ret);
\r
1314 ret = goodix_i2c_write_bytes(ts->client, i2c_data_buf, PACK_SIZE+1);
\r
1318 printk("[GOODiX_ISP_OLD]:Write File Data Failed!Return:%d\n", ret);
\r
1322 file_len -= rd_len;
\r
1324 //Wait for slave ready signal.
\r
1325 ret = wait_slave_ready(ts, &time_count);
\r
1326 if(ret == ERROR_I2C_TRANSFER)
\r
1333 }//end of while((file_len >= 0) && (!send_crc))
\r
1336 case STEP_READ_STATUS:
\r
1337 printk(KERN_INFO"STEP6:Read update status!\n");
\r
1338 while(time_count < MAX_TIMEOUT)
\r
1340 ret = goodix_i2c_read_bytes(ts->client, i2c_states_buf, 2);
\r
1345 if(i2c_states_buf[1] & SLAVE_READY)
\r
1347 if(!(i2c_states_buf[1] &0xf0))
\r
1349 printk(KERN_INFO"The firmware updating succeed!update state:0x%x\n",i2c_states_buf[1]);
\r
1354 printk(KERN_INFO"The firmware updating failed!update state:0x%x\n",i2c_states_buf[1]);
\r
1363 case FUN_CLR_VAL: //clear the static val
\r
1366 update_need_config = 0;
\r
1368 case FUN_CMD: //functional command
\r
1369 if(cmd[1] == CMD_DISABLE_TP)
\r
1371 printk(KERN_INFO"Disable TS int!\n");
\r
1373 disable_irq(ts->irq);
\r
1375 else if(cmd[1] == CMD_ENABLE_TP)
\r
1377 printk(KERN_INFO"Enable TS int!\n");
\r
1379 enable_irq(ts->irq);
\r
1381 else if(cmd[1] == CMD_READ_VER)
\r
1383 printk(KERN_INFO"Read version!\n");
\r
1384 ts->read_mode = MODE_RD_VER;
\r
1386 else if(cmd[1] == CMD_READ_RAW)
\r
1388 printk(KERN_INFO"Read raw data!\n");
\r
1389 ts->read_mode = MODE_RD_RAW;
\r
1390 i2c_control_buf[1] = 201;
\r
1391 ret = goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2); //read raw data cmd
\r
1394 printk(KERN_INFO"Write read raw data cmd failed!\n");
\r
1399 else if(cmd[1] == CMD_READ_DIF)
\r
1401 printk(KERN_INFO"Read diff data!\n");
\r
1402 ts->read_mode = MODE_RD_DIF;
\r
1403 i2c_control_buf[1] = 202;
\r
1404 ret = goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2); //read diff data cmd
\r
1407 printk(KERN_INFO"Write read raw data cmd failed!\n");
\r
1412 else if(cmd[1] == CMD_READ_CFG)
\r
1414 printk(KERN_INFO"Read config info!\n");
\r
1415 ts->read_mode = MODE_RD_CFG;
\r
1416 rd_cfg_addr = cmd[2];
\r
1417 rd_cfg_len = cmd[3];
\r
1419 else if(cmd[1] == CMD_SYS_REBOOT)
\r
1421 printk(KERN_INFO"System reboot!\n");
\r
1424 kernel_restart(NULL);
\r
1427 case FUN_WRITE_CONFIG:
\r
1429 printk(KERN_INFO"Begin write config info!Config length:%d\n",cmd[1]);
\r
1430 for(i=3; i<cmd[1];i++)
\r
1432 //if((i-3)%5 == 0)printk("\n");
\r
1433 printk("(%d):0x%x ", i-3, cmd[i]);
\r
1437 if((cmd[2]>83)&&(cmd[2]<240)&&cmd[1])
\r
1439 checksum_error_times = 0;
\r
1441 ret = goodix_i2c_write_bytes(ts->client, cmd+2, cmd[1]);
\r
1444 printk("Write Config failed!return:%d\n",ret);
\r
1447 if(!update_need_config)return 1;
\r
1449 i2c_rd_buf[0] = cmd[2];
\r
1450 ret = goodix_i2c_read_bytes(ts->client, i2c_rd_buf, cmd[1]);
\r
1453 printk("Read Config failed!return:%d\n",ret);
\r
1456 for(i=0; i<cmd[1]; i++)
\r
1458 if(i2c_rd_buf[i] != cmd[i+2])
\r
1460 printk("Config readback check failed!\n");
\r
1467 i2c_control_buf[0] = ADDR_CMD;
\r
1468 i2c_control_buf[1] = 0x03;
\r
1469 goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2); //communication error
\r
1470 checksum_error_times++;
\r
1472 if(checksum_error_times > 20) //max retry times.
\r
1478 i2c_control_buf[0] = ADDR_CMD;
\r
1479 i2c_control_buf[1] = 0x04; //let LDROM write flash
\r
1480 goodix_i2c_write_bytes(ts->client, i2c_control_buf, 2);
\r
1487 printk(KERN_INFO"Invalid config addr!\n");
\r
1496 static int goodix_update_read( char *page, char **start, off_t off, int count, int *eof, void *data )
\r
1499 struct rk_ts_data *ts;
\r
1501 char *version_info = NULL;
\r
1502 static unsigned char read_data[1201] = {80, };
\r
1504 ts = i2c_get_clientdata(i2c_connect_client);
\r
1508 if(ts->read_mode == MODE_RD_VER) //read version data
\r
1510 ret = goodix_read_version(ts, &version_info);
\r
1513 printk(KERN_INFO"Read version data failed!\n");
\r
1514 vfree(version_info);
\r
1518 for(len=0;len<100;len++)
\r
1520 if(*(version_info + len) == '\0')
\r
1523 printk(KERN_INFO"GOODiX Touchscreen Version is:%s\n", (version_info+1));
\r
1524 strncpy(page, version_info+1, len + 1);
\r
1525 vfree(version_info);
\r
1529 else if((ts->read_mode == MODE_RD_RAW)||(ts->read_mode == MODE_RD_DIF)) //read raw data or diff
\r
1531 //printk(KERN_INFO"Read raw data\n");
\r
1532 ret = goodix_i2c_read_bytes(ts->client, read_data, 1201);
\r
1535 if(ts->read_mode == 2)
\r
1536 printk(KERN_INFO"Read raw data failed!\n");
\r
1537 if(ts->read_mode == 3)
\r
1538 printk(KERN_INFO"Read diff data failed!\n");
\r
1541 memcpy(page, read_data+1, 1200);
\r
1546 else if(ts->read_mode == MODE_RD_CFG)
\r
1548 if((rd_cfg_addr>83)&&(rd_cfg_addr<240))
\r
1550 read_data[0] = rd_cfg_addr;
\r
1551 printk("read config addr is:%d\n", rd_cfg_addr);
\r
1555 read_data[0] = 101;
\r
1556 printk("invalid read config addr,use default!\n");
\r
1558 if((rd_cfg_len<0)||(rd_cfg_len>156))
\r
1560 printk("invalid read config length,use default!\n");
\r
1561 rd_cfg_len = 239 - read_data[0];
\r
1563 printk("read config length is:%d\n", rd_cfg_len);
\r
1564 ret = goodix_i2c_read_bytes(ts->client, read_data, rd_cfg_len);
\r
1567 printk(KERN_INFO"Read config info failed!\n");
\r
1570 memcpy(page, read_data+1, rd_cfg_len);
\r
1571 return rd_cfg_len;
\r
1577 //******************************End of firmware update surpport*******************************
\r
1578 static const struct i2c_device_id goodix_ts_id[] = {
\r
1579 { "Goodix-TS", 0 },
\r
1583 static struct of_device_id goodix_ts_dt_ids[] = {
\r
1584 { .compatible = "goodix,gt8xx" },
\r
1588 static struct i2c_driver rk_ts_driver = {
\r
1589 .probe = rk_ts_probe,
\r
1590 .remove = rk_ts_remove,
\r
1591 .shutdown = rk_ts_shutdown,
\r
1592 .id_table = goodix_ts_id,
\r
1594 .name = "Goodix-TS",
\r
1595 .owner = THIS_MODULE,
\r
1596 .of_match_table = of_match_ptr(goodix_ts_dt_ids),
\r
1601 static struct class *ts_debug_class = NULL;
\r
1602 static ssize_t dbg_mode_show(struct class *cls,struct class_attribute *attr, char *_buf)
\r
1604 printk("%s>>>>>>>>\n",__func__);
\r
1608 static ssize_t dbg_mode_store(struct class *cls,struct class_attribute *attr, const char *buf, size_t _count)
\r
1610 dbg_thresd = simple_strtol(buf,NULL,10);
\r
1613 printk(KERN_INFO "ts debug open\n");
\r
1617 printk(KERN_INFO "ts debug close");
\r
1622 static CLASS_ATTR(debug, 0664, dbg_mode_show, dbg_mode_store);
\r
1624 static int dbg_sys_init(void)
\r
1627 ts_debug_class = class_create(THIS_MODULE, "ts_debug");
\r
1628 ret = class_create_file(ts_debug_class, &class_attr_debug);
\r
1631 printk("Fail to creat class hkrkfb.\n");
\r
1637 /*******************************************************
\r
1639 Driver Install function.
\r
1641 Executive Outcomes. 0---succeed.
\r
1642 ********************************************************/
\r
1644 static void __init rk_ts_init_async(void *unused, async_cookie_t cookie)
\r
1646 i2c_add_driver(&rk_ts_driver);
\r
1647 dbg_sys_init(); //for debug
\r
1650 static int __init rk_ts_init(void)
\r
1652 async_schedule(rk_ts_init_async, NULL);
\r
1656 /*******************************************************
\r
1658 Driver uninstall function.
\r
1660 Executive Outcomes. 0---succeed.
\r
1661 ********************************************************/
\r
1662 static void __exit rk_ts_exit(void)
\r
1664 printk(KERN_ALERT "Touchscreen driver of guitar exited.\n");
\r
1665 i2c_del_driver(&rk_ts_driver);
\r
1668 module_init(rk_ts_init);
\r
1669 module_exit(rk_ts_exit);
\r
1671 MODULE_DESCRIPTION("Goodix Touchscreen Driver");
\r
1672 MODULE_LICENSE("GPL");
\r