基于rk3288平台的gt9xx 触摸驱动移植

本是古典何须时尚 2021-11-18 00:30 1061阅读 0赞

**                                          基于rk3288平台的gt9xx 触摸驱动移植**  
  
**一、硬件介绍：**  
    1 core-rk3288j 核心板  
    2 外接lvds 1280\*480的屏幕  
    3 触摸芯片GT928，I2C驱动，触摸驱动发布版本和时间\* Version: 2.4  \* Release Date: 2014/11/28 \*/  
    4 操作系统Ubuntu16.04   
**二、触摸芯片硬件电路描述**  
    1 触摸零点右上角  
    2 触摸尺寸 1280\*480  
    3 中断下降沿触发；  
    4 I2C1 接口  
    如：  
    GTP\_INT  GPIO7\_A6 <&gpio7 6 GPIO\_ACTIVE\_HIGH>;  
    GTP\_RST  GPIO7\_A5 <&gpio7 5 GPIO\_ACTIVE\_LOW>  
    I2C1\_SDA   
    I2C1\_SCL  
**三、开启驱动移植**  
**1 dts 配置硬件**  
&i2c1 \{   
        status = "okay";  
        goodix\_ts@5d \{   
                        compatible = "goodix,gt9xx";  
                        reg = <0x5d>;  
                        interrupt-parent = <&gpio7>;  
                        interrupts = <6 IRQ\_TYPE\_EDGE\_FALLING>;  
                        goodix,rst-gpio = <&gpio7 5 GPIO\_ACTIVE\_LOW>;  
                        goodix,irq-gpio = <&gpio7 6 GPIO\_ACTIVE\_HIGH>;  
                        goodix,cfg-group2 = \[  
                                41 E0 01 00 05 05 05 00 02 08 28  
                                05 5A 3C 03 05 00 00 00 00 00 00  
                                00 00 00 00 00 90 30 66 36 2D 05  
                                0D 00 00 00 00 03 25 00 00 00 00  
                                00 00 00 00 00 00 00 00 00 00 00  
                                00 00 00 00 00 00 00 00 00 00 00  
                                00 00 00 00 00 00 00 00 00 00 00  
                                00 00 00 00 00 00 00 00 00 00 00  
                                00 00 00 00 00 00 00 00 00 00 00  
                                00 00 00 00 00 00 00 00 00 00 00  
                                00 00 00 01 04 05 06 07 08 09 0C  
                                0D 0E 0F FF FF FF FF FF FF FF FF  
                                FF FF FF FF 00 00 00 00 00 00 2A  
                                29 28 27 26 25 24 23 22 21 20 1F  
                                1E 1C 1B 19 14 13 12 11 10 0F 0E  
                                0D 0C 0A 08 07 06 04 02 00 00 00  
                                00 00 00 00 00 00 00 00 0C 01\];  
                \};  
  
\};  
**2 gt9xx.h 文件配置修改**  
放在最前面的：  
on/off 开启/关闭配置  
1 打开 GTP\_CUSTOM\_CFG  需要配置成1，用来用户自定义设置；  
2 打开GTP\_DRIVER\_SEND\_CFG   需要配置成1 ，用来发送CFG文件配置；  
3 打开GTP\_DEBUG\_ON        可以看到配置成1 ，可以看到调试信息；    
  
例如：  
  
//\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*PART1:ON/OFF define\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*  
\#define GTP\_CUSTOM\_CFG        1  
\#define GTP\_CHANGE\_X2Y        0    //swap x y  
\#define GTP\_DRIVER\_SEND\_CFG   1    //driver send config  
\#define GTP\_HAVE\_TOUCH\_KEY    0  
\#define GTP\_POWER\_CTRL\_SLEEP  0    //power off when suspend  
\#define GTP\_ICS\_SLOT\_REPORT   0    // slot protocol  
  
\#define GTP\_AUTO\_UPDATE       0    // auto update fw by .bin file as default  
\#define GTP\_HEADER\_FW\_UPDATE  0    // auto update fw by gtp\_default\_FW in gt9xx\_firmware.h, function together with   
  
GTP\_AUTO\_UPDATE  
\#define GTP\_AUTO\_UPDATE\_CFG   0    // auto update config by .cfg file, function together with GTP\_AUTO\_UPDATE  
  
\#define GTP\_COMPATIBLE\_MODE   0    // compatible with GT9XXF  
  
\#define GTP\_CREATE\_WR\_NODE    0  
\#define GTP\_ESD\_PROTECT       0    // esd protection with a cycle of 2 seconds  
  
\#define GTP\_WITH\_PEN          0  
\#define GTP\_PEN\_HAVE\_BUTTON   0    // active pen has buttons, function together with GTP\_WITH\_PEN  
  
\#define GTP\_GESTURE\_WAKEUP    0    // gesture wakeup  
  
\#define GTP\_DEBUG\_ON          1  
\#define GTP\_DEBUG\_ARRAY\_ON    0  
\#define GTP\_DEBUG\_FUNC\_ON     0  
  
\#if GTP\_COMPATIBLE\_MODE  
  
第一步：：  
//\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* PART2:TODO define \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*  
// STEP\_1(REQUIRED): Define Configuration Information Group(s)  
// Sensor\_ID Map:  
/\* sensor\_opt1 sensor\_opt2 Sensor\_ID  
    GND         GND          0  
    VDDIO      GND          1  
    NC           GND          2  
    GND         NC/300K    3  
    VDDIO      NC/300K    4  
    NC           NC/300K    5  
\*/  
// TODO: define your own default or for Sensor\_ID == 0 config here.  
// The predefined one is just a sample config, which is not suitable for your tp in most cases.  
  
\#define CTP\_CFG\_GROUP0 \{\\  
  
\}  
    // TODO: define your config for Sensor\_ID == 1 here, if needed  
\#define CTP\_CFG\_GROUP1 \{\\  
    \}  
  
// TODO: define your config for Sensor\_ID == 2 here, if needed  
\#define CTP\_CFG\_GROUP2 \{\\  
        0x41,0xE0,0x01,0x00,0x05,0x05,0x05,0x00,0x02,0x08,0x28,\\  
        0x05,0x5A,0x3C,0x03,0x05,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x90,0x30,0x66,0x36,0x2D,0x05,\\  
        0x0D,0x00,0x00,0x00,0x00,0x03,0x25,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x01,0x04,0x05,0x06,0x07,0x08,0x09,0x0C,\\  
        0x0D,0x0E,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,\\  
        0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x2A,\\  
        0x29,0x28,0x27,0x26,0x25,0x24,0x23,0x22,0x21,0x20,0x1F,\\  
        0x1E,0x1C,0x1B,0x19,0x14,0x13,0x12,0x11,0x10,0x0F,0x0E,\\  
        0x0D,0x0C,0x0A,0x08,0x07,0x06,0x04,0x02,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x01\\  
    \}  
  
// TODO: define your config for Sensor\_ID == 3 here, if needed  
\#define CTP\_CFG\_GROUP3 \{\\  
\}  
// TODO: define your config for Sensor\_ID == 4 here, if needed  
\#define CTP\_CFG\_GROUP4 \{\\  
    \}  
  
// TODO: define your config for Sensor\_ID == 5 here, if needed  
\#define CTP\_CFG\_GROUP5 \{\\  
    \}  
     
第二步：设置中断和复位引脚  
// STEP\_2(REQUIRED): Customize your I/O ports & I/O operations  
\#define GTP\_RST\_PORT    5//S5PV210\_GPJ3(6)  
\#define GTP\_INT\_PORT    6//S5PV210\_GPH1(3)  
  
第三步：设置触摸区域和下降沿触发  
// STEP\_3(optional): Specify your special config info if needed  
\#if GTP\_CUSTOM\_CFG  
  \#define GTP\_MAX\_HEIGHT   480  
  \#define GTP\_MAX\_WIDTH    1280  
  \#define GTP\_INT\_TRIGGER  1            // 0: Rising 1: Falling  
  
  
**四、总结及问题汇总**  
  
1 触摸不灵或者不准的问题，需要厂家给CFG文件，修改gt9xx.h 文件，不是必须修改dts文件，需要把宏GTP\_DRIVER\_SEND\_CFG 配置成1。  
格式内容如下：  
\#define CTP\_CFG\_GROUP2 \{\\  
        0x41,0x00,0x05,0xE0,0x01,0x05,0x0D,0x00,0x02,0x08,0x28,\\  
        0x05,0x5A,0x3C,0x03,0x05,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x90,0x30,0x66,0x36,0x2D,0x05,\\  
        0x0D,0x00,0x00,0x00,0x00,0x03,0x25,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,\\  
        0x00,0x00,0x0F,0x0E,0x0D,0x0C,0x09,0x08,0x07,0x06,0x05,\\  
        0x04,0x01,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,\\  
        0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x2A,\\  
        0x29,0x28,0x27,0x26,0x25,0x24,0x23,0x22,0x21,0x20,0x1F,\\  
        0x1E,0x1C,0x1B,0x19,0x14,0x13,0x12,0x11,0x10,0x0F,0x0E,\\  
        0x0D,0x0C,0x0A,0x08,0x07,0x06,0x04,0x02,0x00,0x00,0x00,\\  
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x01\\  
\}  
2 厂家 有指定也就是的sensorID， 配置到哪个group 是厂家指定的，比如有0-5,6个group，我的配置在了group2；  
\#define CTP\_CFG\_GROUP2  
3 debug信息如下：  
正确的  
  
\[    2.596431\] <<-GTP-DEBUG->> \[2356\]GTP power on.  
\[    2.596491\] <<-GTP-INFO->> Guitar reset  
\[    2.735657\] <<-GTP-INFO->> IC Version: 928\_1040  
\[    2.738181\] <<-GTP-INFO->> Sensor\_ID: 2  
\[    2.738186\] <<-GTP-DEBUG->> \[1394\]Get config data from device tree.  
\[    2.738196\] <<-GTP-INFO->> Config group2 used,length: 186  
\[    2.739467\] <<-GTP-DEBUG->> \[1430\]Config Version: 65, 0x41; IC Config Version: 65, 0x41  
\[    2.739473\] <<-GTP-INFO->> Driver send config.  
\[    2.765064\] <<-GTP-INFO->> X\_MAX: 1280, Y\_MAX: 480, TRIGGER: 0x01  
\[    2.783848\] <<-GTP-INFO->> create proc entry gt9xx\_config success  
\[    2.784195\] input: goodix-ts as /devices/virtual/input/input1  
\[    2.784497\] <<-GTP-DEBUG->> \[1746\]INT trigger type:1  
  
如果遇到如下debug信息，一般onfig data解析错误，GTP init panel failed.一般就是cfg文件没设置好，询问厂家技术支持放置在group0-group5的哪个里面。  
  
\[    2.585428\] <<-GTP-DEBUG->> \[2356\]GTP power on.  
\[    2.585488\] <<-GTP-INFO->> Guitar reset  
\[    2.725369\] <<-GTP-INFO->> IC Version: 928\_1040  
\[    2.727878\] <<-GTP-INFO->> Sensor\_ID: 2  
\[    2.727883\] <<-GTP-DEBUG->> \[1394\]Get config data from device tree.  
\[    2.727891\] <<-GTP-ERROR->> Failed to parse config data form device tree.  
\[    2.727893\] <<-GTP-ERROR->> GTP init panel failed.  
\[    2.727914\] <<-GTP-INFO->> create proc entry gt9xx\_config success  
\[    2.728268\] input: goodix-ts as /devices/virtual/input/input1  
\[    2.728591\] <<-GTP-DEBUG->> \[1746\]INT trigger type:1  
\[    2.728674\] <<-GTP-INFO->> GTP works in interrupt mode.  
  
4 移植的时候需要定义个宏：  
\#define GTP\_CONFIG\_OF  
这个宏非常关键，在gt9xx.c 文件头部位置，定义上去！ 否则驱动无法正常执行。