RK3566调试cst3xx触屏驱动
SDK中加入驱动文件
在kernel/driver/input/touchscreen下加入cst3xx的驱动文件夹，修改目前下的Makefile文件和Kconfig文件。
文件夹下的Makefile内容如下：
obj-$(CONFIG_TOUCHSCREEN_HYN_CST3XX) += hyn_cst3xx.oMakefile文件加入：
obj-$(CONFIG_TOUCHSCREEN_HYN_CST3XX) += hyn_cst3xx/Kconfig文件加入：
config TOUCHSCREEN_HYN_CST3XX
tristate "hyn cst3xx based touchscreens"
depends on I2C
help
Say Y here if you have a hyn based touchscreen
controller.
If unsure, say N.
To compile this driver as a module, choose M here: the
module will be called hyn_ts.在rk3566-rk817-tablet.dts中的i2c4下加入触屏节点:
&i2c4 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&i2c4m0_xfer>;
clock-frequency = <400000>;
i2c-scl-rising-time-ns = <138>;
i2c-scl-falling-time-ns = <4>;
ts@38 {
compatible = "cst3xx";
reg = <0x38>;
irq-gpio = <&gpio3 RK_PD7 IRQ_TYPE_EDGE_RISING>;
wake-gpio = <&gpio3 RK_PD6 GPIO_ACTIVE_LOW>;
};
};irq-gpio为中断引脚，wake-gpio为复位引脚；
kernel中加入cst3xx的驱动
cd到kernel路径下，执行 make menuconfig ARCH=arm64，选中"hyn cst3xx based touchscreens"
然后选中"save"将新的配置保存到.config中，再执行:
cp .config arch/arm64/configs/rockchip_linux_defconfig将.config的内容保存到rockchip_linux_defconfig中，然后从新编译内核，退回上级目录，执行：
./build.sh kernel编译成功之后，将新生成的boot.img烧写到主板上。
调试
烧写boot.img后，点击触摸屏界面无响应，需要进行问题排查。
查看启动日志中关于cst3xx的信息：
[root@RK356X:/]# dmesg | grep cst3xx
[ 1.031378] cst3xx enter hyn_ts_probe
[ 1.091606] hyn cst3xx Enter cst3xx_ts_init
[ 1.091915] input: cst3xx as /devices/platform/fe5d0000.i2c/i2c-4/4-0038/input/input2
[ 1.092150] cst3xx request ts->irq is :103表明cst3xx初始化成功，作为input2输入设备；但是ts-irq的编号似乎不对，当前的gpio编号(GPIO3_D7)为127。
查看GPIO的输入输出状态：
[root@RK356X:/]# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/fdd60000.gpio, gpio0:
gpio-5 ( |xgpio-pin ) out lo
gpio-6 ( |xgpio-pin ) out hi
gpio-20 ( |reset ) out hi
gpiochip1: GPIOs 32-63, parent: platform/fe740000.gpio, gpio1:
gpio-42 ( |reset ) out hi
gpio-56 ( |pcie20_3v3 ) out hi
gpiochip2: GPIOs 64-95, parent: platform/fe750000.gpio, gpio2:
gpio-77 ( |bt_default_rts ) in hi
gpio-79 ( |bt_default_reset ) out lo
gpiochip3: GPIOs 96-127, parent: platform/fe760000.gpio, gpio3:
gpio-124 ( |headset_gpio ) in lo
gpio-125 ( |reset ) out hi
gpio-126 ( |cst3xx wake pin ) out lo
gpiochip4: GPIOs 128-159, parent: platform/fe770000.gpio, gpio4:
gpio-134 ( |xgpio-pin ) out lo
gpio-136 ( |bt_default_wake_host) in hi
gpio-137 ( |bt_default_wake ) in lo
gpio-146 ( |mdio-reset ) out hi
gpiochip5: GPIOs 509-511, parent: platform/rk805-pinctrl, rk817-gpio, can sleep:其中没有关于gpio-127的描述。
监听触屏事件：
[root@RK356X:/]# evtest /dev/input/event2
Input driver version is 1.0.1
Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0
Input device name: "cst3xx"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event type 3 (EV_ABS)
Event code 47 (ABS_MT_SLOT)
Value 0
Min 0
Max 10
Event code 48 (ABS_MT_TOUCH_MAJOR)
Value 0
Min 0
Max 255
Event code 50 (ABS_MT_WIDTH_MAJOR)
Value 0
Min 0
Max 200
Event code 53 (ABS_MT_POSITION_X)
Value 0
Min 0
Max 480
Event code 54 (ABS_MT_POSITION_Y)
Value 0
Min 0
Max 854
Event code 57 (ABS_MT_TRACKING_ID)
Value 0
Min 0
Max 65535
Key repeat handling:
Repeat type 20 (EV_REP)
Repeat code 0 (REP_DELAY)
Value 250
Repeat code 1 (REP_PERIOD)
Value 33
Properties:
Property type 1 (INPUT_PROP_DIRECT)
Testing ... (interrupt to exit)手指点击触屏，主板没有上报坐标。
查看中断情况：
[root@RK356X:/]# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
103: 50954018 0 0 0 gpio3 31 Edge cst3xx
可以看到cst3xx的中断管脚为gpio3 31，并且产生了50954018次中断。
排查硬件
中断管脚
通过万用表测量，TP_INT管脚输出的高电平为1.8V，但是处理器的I/O电平配置的3.3V，需要将触摸屏的I/O电平配置成VCC才行。和触屏厂家沟通后，确定配置的触屏I/O电压为1.8V，厂家重新配置了一个固件，并且寄了一个烧录工具，通过烧录工具将新固件烧录进触屏后，INT管脚输出的高电平为2.69V（VCC=3.3V的情况），还是没有完全正常。
复位管脚
处理器的GPIO与触摸屏的TP_RST管脚之间串联了一个100Ω的电阻，通过万用表测量处理器端GPIO的电压为0V，触摸屏的RST管脚的电压为2.18V，说明处理器的GPIO一直输出的是低电平，但是触摸屏的RST管脚有上拉电阻，所以经过分压之后RST管脚上有电压，且这个电压不足以使触摸屏复位。怀疑是厂家给的驱动有问题，询问厂家当前给的驱动是否匹配以及是否有适配的驱动，厂家回复当前的驱动需要修改，并发了新的驱动。
使用新驱动进行调试
根据新驱动加入dts节点：
&i2c4 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&i2c4m0_xfer>;
clock-frequency = <400000>;
i2c-scl-rising-time-ns = <138>;
i2c-scl-falling-time-ns = <4>;
hynitron@38 {
compatible = "hynitron,hyn_ts";
reg = <0x38>;
hynitron,reset-gpio = <&gpio3 RK_PD6 GPIO_ACTIVE_LOW>;
hynitron,irq-gpio = <&gpio3 RK_PD7 IRQ_TYPE_EDGE_FALLING>;
hynitron,max-touch-number = <5>;
hynitron,display-coords = < 480 854>;
hynitron,have-key;
hynitron,key-number = <0>;
hynitron,key-code = <139 172 158>;
hynitron,key-y-coord = <900 900 900>;
hynitron,key-x-coord = <100 300 400>;
};
};并替换驱动文件，然后编译，编译报了一些错，分析得知这些错是和debug相关的，所以将hynitron_config.h文件中相关的宏设置为0：
#define ANDROID_TOOL_SURPORT 0
#define HYN_SYSFS_NODE_EN 0
并修改hynitron_core.c文件：
#if ANDROID_TOOL_SURPORT
hynitron_touch_setmode(hyn_ts_data->client,hyn_ts_data->work_mode,hyn_ts_data->config_chip_product_line==HYN_CHIP_PRODUCT_LINE_MUT_CAP);
#endif加入ANDROID_TOOL_SURPORT编译条件。
编译成功之后，烧写boot.img到主板，主板启动之后，触摸屏还是不能使用。
获取触屏相关的开机日志：
[root@RK356X:/]# dmesg | grep HYN
[ 1.088041] [HYN]hynitron_driver_init: Enter
[ 1.088079] [HYN][Info]Driver version: Hynitron TouchScreen Rockchip Driver V2.1 20201222
[ 1.088229] [HYN]hyn_probe: Enter
[ 1.088246] [HYN]hyn_platform_data_init: Enter
[ 1.088256] [HYN]hyn_parse_dt: Enter
[ 1.088269] [HYN][Info]display x(480 ) y(854 )
[ 1.088320] [HYN]DTS max touch number:5, irq gpio:127, reset gpio:126
[ 1.088330] [HYN]hyn_parse_dt: Exit(1519)
[ 1.088339] [HYN]hyn_gpio_configure: Enter
[ 1.108392] [HYN]hyn_gpio_configure: Exit(1387)
[ 1.108408] [HYN]hyn_ts_data_init: Enter
[ 1.108420] [HYN]config [hyn] scan_id = 7,config_chip_type:0x9e.
[ 1.108432] [HYN]client addr is different,now use default addr,please confirm. client->addr=0x5a, default iic addr=0x5a.
[ 1.108444] [HYN]config_chip_type:0x9e,main_addr:0x5a,x_overturn=0,y_overturn=0,xy_exchange=0,.
[ 1.108454] [HYN]hyn_ts_data_init: Exit(1561)
[ 1.168489] [HYN]hyn_firmware_info: Enter
[ 1.168503] [HYN]cst3xx_firmware_info: Enter
[ 1.168713] [HYN]hyn_firmware_info: Exit(2454)
[ 1.168726] [HYN][Error]hyn_firmware_info failed,start check boot.
[ 1.168739] [HYN]cst3xxse_bootloader_enter: Enter
[ 1.195768] [HYN] bootloader mode client->addr:0x5a.
[ 1.224069] [HYN] bootloader mode client->addr:0x5a.
[ 1.253277] [HYN] bootloader mode client->addr:0x5a.
[ 1.283425] [HYN] bootloader mode client->addr:0x5a.
[ 1.314551] [HYN] bootloader mode client->addr:0x5a.
[ 1.314670] [HYN][Error]cst3xx_bootloader_enter error,please check VCC/RST/SDA/SCL and chip type.
[ 1.314684] [HYN]exit bootloader mode,client->addr:0x5a.
[ 1.374706] [HYN]hyn_detect_bootloader: Exit(2900)
[ 1.374719] [HYN][Error]Touch Probe : detect hynitron ic type fail...
[ 1.374765] [HYN]hyn_probe: Exit(1940)
[ 1.374910] [HYN]hynitron_driver_init: Exit(2022)
分析日志得出，是器件I2C地址不匹配，当前触摸屏配置的I2C器件地址是0x38，而驱动中设置的是0x5A。
修改hynitron_core.h文件，
将
#define HYN_MAIN_IIC_ADDR_CONFIG 0x5A
改为：
#define HYN_MAIN_IIC_ADDR_CONFIG 0x38
修改之后，再次编译内核并且烧录，触摸屏还是没反应，获取触屏相关的开机日志：
[root@RK356X:/]# dmesg | grep HYN
[ 1.413024] [HYN]hynitron_driver_init: Enter
[ 1.413126] [HYN][Info]Driver version: Hynitron TouchScreen Rockchip Driver V2.1 20201222
[ 1.413365] [HYN]hyn_probe: Enter
[ 1.413396] [HYN]hyn_platform_data_init: Enter
[ 1.413417] [HYN]hyn_parse_dt: Enter
[ 1.413445] [HYN][Info]display x(480 ) y(854 )
[ 1.413536] [HYN]DTS max touch number:5, irq gpio:127, reset gpio:126
[ 1.413558] [HYN]hyn_parse_dt: Exit(1519)
[ 1.413576] [HYN]hyn_gpio_configure: Enter
[ 1.433649] [HYN]hyn_gpio_configure: Exit(1387)
[ 1.433670] [HYN]hyn_ts_data_init: Enter
[ 1.433690] [HYN]config [hyn] scan_id = 7,config_chip_type:0x9e.
[ 1.433709] [HYN]config_chip_type:0x9e,main_addr:0x38,x_overturn=0,y_overturn=0,xy_exchange=0,.
[ 1.433723] [HYN]hyn_ts_data_init: Exit(1561)
[ 1.493755] [HYN]hyn_firmware_info: Enter
[ 1.493769] [HYN]cst3xx_firmware_info: Enter
[ 1.504280] [HYN][Info]the chip chip_ic_checkcode:0x0.
[ 1.504296] [HYN][Error]cst3xx_firmware_info read error .
[ 1.504307] [HYN]hyn_firmware_info: Exit(2454)
[ 1.504316] [HYN][Error]hyn_firmware_info failed,start check boot.
[ 1.504327] [HYN]cst3xxse_bootloader_enter: Enter
[ 1.531352] [HYN] bootloader mode client->addr:0x5a.
[ 1.559477] [HYN] bootloader mode client->addr:0x5a.
[ 1.588703] [HYN] bootloader mode client->addr:0x5a.
[ 1.618968] [HYN] bootloader mode client->addr:0x5a.
[ 1.650170] [HYN] bootloader mode client->addr:0x5a.
[ 1.650327] [HYN][Error]cst3xx_bootloader_enter error,please check VCC/RST/SDA/SCL and chip type.
[ 1.650342] [HYN]exit bootloader mode,client->addr:0x38.
[ 1.710364] [HYN]hyn_detect_bootloader: Exit(2900)
[ 1.710377] [HYN][Error]Touch Probe : detect hynitron ic type fail...
[ 1.710413] [HYN]hyn_probe: Exit(1940)
[ 1.710564] [HYN]hynitron_driver_init: Exit(2022)
分析日志得出，驱动在进行一些firmware操作是出现了错误，修改hynitron_core.c文件中关于firmware的操作，主要是屏蔽int hyn_probe()函数中的一些操作：
/************************************************************************
* Name: hyn_probe
* Brief:
* Input:
* Output:
* Return:
***********************************************************************/
static int hyn_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
int ret =-1;
struct hynitron_ts_data *ts_data = NULL;
HYN_FUNC_ENTER();
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
HYN_ERROR("I2C not supported");
return -ENODEV;
}
/* malloc memory for global struct variable,init 0 */
ts_data = kzalloc(sizeof(*ts_data), GFP_KERNEL);
if (!ts_data) {
HYN_ERROR("allocate memory for ts_data fail");
return -ENOMEM;
}
hyn_ts_data=ts_data;
ts_data->client = client;
ts_data->dev = &client->dev;
i2c_set_clientdata(client, ts_data);
//ts_data->device_id = id->driver_data; //if null,may cause dump
ret=hyn_platform_data_init(ts_data);
if (ret<0) {
HYN_ERROR("hyn_platform_data_init fail,please check DTS.");
kfree(ts_data);
return ret;
}
ret = hyn_gpio_configure(ts_data);
if (ret<0) {
HYN_ERROR("hyn_gpio_configure fail");
return -1;
}
hyn_ts_data_init(client);
mdelay(60);
/* 11111111 */
// ret=hyn_firmware_info(client);
// if(ret<0){
// HYN_ERROR("hyn_firmware_info failed,start check boot.\n");
// ret=hyn_detect_bootloader(client);
// if (ret<0){
// HYN_ERROR("Touch Probe : detect hynitron ic type fail...");
// goto err_end;
// }
// mdelay(30);
// }else{
// HYN_INFO("hyn_firmware_info success.\n");
// }
ret=hyn_input_dev_int(ts_data);
if (ret<0){
HYN_ERROR("Touch Probe : hyn_input_dev_int fail...");
goto err_end;
}
ret=hyn_irq_init(client);
if (ret<0){
HYN_ERROR("Touch Probe : hyn_irq_init fail...");
goto err_end;
}
hyn_irq_disable();
/* 22222222 */
// ret=hyn_update_firmware_init(client);
// if (ret<0){
// HYN_ERROR("Touch Probe : hyn_update_firmware_init fail...");
// goto err_end;
// }
#if ANDROID_TOOL_SURPORT
ret = hynitron_proc_fs_init();
if(ret<0) {
HYN_ERROR("[create hyniyron proc fs node failed.\n");
}
#endif
#if HYN_SYSFS_NODE_EN
ret =hyn_create_sysfs(client);
if (ret < 0) {
HYN_ERROR("create hyniyron proc fs node failed.\n");
}
#endif
#if HYN_GESTURE_EN
hyn_gesture_init(hyn_ts_data->input_dev, client);
if (ret<0){
HYN_ERROR("Touch Probe : hyn_gesture_init fail...");
}
#endif
#if HYN_PSENSOR_EN
hyn_proximity_init();
if(ret<0){
HYN_ERROR("Touch Probe : hyn_proximiy_init fail...");
}
#endif
#if HYN_ESDCHECK_EN
hyn_esd_init();
#endif
#if defined(CONFIG_FB)
INIT_WORK(&ts_data->resume_work,hyn_ts_resume_work);
ts_data->fb_notif.notifier_call = hyn_fb_notifier_callback;
fb_register_client(&ts_data->fb_notif);
#elif defined(CONFIG_HAS_EARLYSUSPEND)
ts_data->early_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB + 1;
ts_data->early_suspend.suspend=hyn_ts_early_suspend;
ts_data->early_suspend.resume=hyn_ts_late_resume;
register_early_suspend(&ts_data->early_suspend);
#else
ts_data->tp.tp_suspend = hyn_ts_early_suspend;
ts_data->tp.tp_resume = hyn_ts_late_resume;
tp_register_fb(&ts_data->tp);
#endif
hyn_reset_proc(40);
hyn_irq_enable();
HYN_DEBUG("Touch Panel Device Probe %s!", (ret < 0) ? "FAIL" : "PASS");
HYN_FUNC_EXIT();
return 0;
err_end:
if (gpio_is_valid(ts_data->pdata->reset_gpio))
gpio_free(ts_data->pdata->reset_gpio);
if (gpio_is_valid(ts_data->pdata->irq_gpio))
gpio_free(ts_data->pdata->irq_gpio);
#if HYN_GESTURE_EN
hyn_gesture_exit();
#endif
#if HYN_PSENSOR_EN
hyn_proximity_exit();
#endif
#if ANDROID_TOOL_SURPORT
hynitron_proc_fs_exit();
#endif
#if HYN_SYSFS_NODE_EN
hyn_release_sysfs(hyn_ts_data->client);
#endif
//if point is null,may cause dump
if(hyn_ts_data->use_irq!=0)
free_irq(hyn_ts_data->use_irq,NULL);
//if(ts_data->input_dev!=NULL)
//input_unregister_device(ts_data->input_dev);
//if(ts_data->hyn_workqueue!=NULL)
//destroy_workqueue(ts_data->hyn_workqueue);
if(ts_data->pdata!=NULL)
kfree(ts_data->pdata);
if(ts_data!=NULL)
kfree(ts_data);
HYN_FUNC_EXIT();
return ret;
}增加/* 11111111 */和/* 22222222 */后面的注释。
修改之后，再次编译内核并且烧录，触摸屏还是没反应，通过日志分析得知执行request_threaded_irq()失败了，修改hyn_irq_registration()，屏蔽hyn_ts_data->use_irq = irq_of_parse_and_map(node, 0);
/*****************************************************************************
* Name: hyn_irq_registration
* Brief:
* Input:
* Output:
* Return:
*****************************************************************************/
static int hyn_irq_registration(struct i2c_client *client)
{
struct device_node *node = NULL;
int ret = 0;
HYN_FUNC_ENTER();
node = of_find_matching_node(node, hyn_dt_match);
if (node)
{
// hyn_ts_data->use_irq = irq_of_parse_and_map(node, 0);
//free_irq(hyn_ts_data->use_irq,NULL);
HYN_INFO("use_irq:%d", hyn_ts_data->use_irq);
ret = request_threaded_irq(hyn_ts_data->use_irq, NULL,hyn_eint_interrupt_handler,
hyn_ts_data->pdata->irq_gpio_flags, "Hynitron Touch Int", hyn_ts_data);
if (ret == 0 ){
HYN_INFO("IRQ request succussfully, irq=%d ,trigger_rising:%d .", hyn_ts_data->use_irq,HYN_IRQ_TRIGGER_RISING_CONFIG);
client->irq = hyn_ts_data->use_irq;
#if HYN_GESTURE_EN
enable_irq_wake(hyn_ts_data->use_irq);
#endif
}
else{
HYN_ERROR("request_irq IRQ LINE NOT AVAILABLE!.ret:%d", ret );
return -1;
}
}
else
{
HYN_ERROR("Can not find touch eint device node!");
return -1;
}
HYN_FUNC_EXIT();
return 0;
}驱动的hynitron_core.h文件中有如下定义：
#define HYN_IRQ_TRIGGER_RISING_CONFIG 0x01
配置驱动检测边沿为上升沿，而实际需要的驱动检测边沿为下降沿，所以将0x01改为0x00
#define HYN_IRQ_TRIGGER_RISING_CONFIG 0x00
将以上内容修改之后，重新编译生成boot.img烧写到主板，点击触屏还没有反应，获取触屏相关的开机日志：
[root@RK356X:/]# dmesg | grep HYN
[ 1.087434] [HYN]hynitron_driver_init: Enter
[ 1.087481] [HYN][Info]Driver version: Hynitron TouchScreen Rockchip Driver V2.1 20201222
[ 1.087658] [HYN]hyn_probe: Enter
[ 1.087676] [HYN]hyn_platform_data_init: Enter
[ 1.087690] [HYN]hyn_parse_dt: Enter
[ 1.087706] [HYN][Info]display x(480 ) y(854 )
[ 1.087760] [HYN]DTS max touch number:5, irq gpio:127, reset gpio:126
[ 1.087774] [HYN]hyn_parse_dt: Exit(1523)
[ 1.087784] [HYN]hyn_gpio_configure: Enter
[ 1.107842] [HYN]hyn_gpio_configure: Exit(1391)
[ 1.107858] [HYN]hyn_ts_data_init: Enter
[ 1.107873] [HYN]config [hyn] scan_id = 7,config_chip_type:0x9e.
[ 1.107911] [HYN]config_chip_type:0x9e,main_addr:0x38,x_overturn=0,y_overturn=0,xy_exchange=0,.
[ 1.107927] [HYN]hyn_ts_data_init: Exit(1565)
[ 1.167953] [HYN]hyn_input_dev_int: Enter
[ 1.168144] [HYN][Info]set key capabilities
[ 1.169228] [HYN]hyn_input_dev_int: Exit(1300)
[ 1.169388] [HYN]hyn_irq_registration: Enter
[ 1.169809] [HYN][Info]use_irq:104
[ 1.170218] [HYN][Info]IRQ request succussfully, irq=104 ,trigger_rising:0 .
[ 1.170239] [HYN]hyn_irq_registration: Exit(613)
[ 1.230287] [HYN]Touch Panel Device Probe PASS!
[ 1.230302] [HYN]hyn_probe: Exit(1910)
[ 1.231453] [HYN]hynitron_driver_init: Exit(2026)
[ 8.870987] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 9.065401] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 9.259495] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 9.479561] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 9.850964] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 10.045146] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 10.239380] [HYN][Error] buf[6] != 0xAB data is not valid..
[ 10.459632] [HYN][Error] buf[6] != 0xAB data is not valid..
分析日志得知，触屏初始化已通过，但是上报的数据不对，导致触摸没有响应。
获取hyn_ts的开机日志如下：
[root@RK356X:/]# dmesg | grep hyn_ts
[ 1.107858] [HYN]hyn_ts_data_init: Enter
[ 1.107927] [HYN]hyn_ts_data_init: Exit(1565)
[ 1.168396] input: hyn_ts as /devices/platform/fe5d0000.i2c/i2c-4/4-0038/input/input3得知hyn_ts作为input3设备。
与厂家沟通
将调试日志发送给触屏模组厂及IC厂技术支持人员，技术支持人员反馈是触摸屏固件不对，不支持此传输协议，经过反复沟通，IC厂技术支持人员给了匹配的固件，烧录触屏模组之后，将模组接上主板，重新上电，触屏可以用了。其中还修改了内核DTS文件，将irq-gpio配置为默认上拉。
配置irq、reset默认上下拉的方式如下：
pinctrl节点下增加hynitron节点:
&pinctrl {
hynitron {
tp_gpio: tp-gpio {
rockchip,pins = <3 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>, //reset
<3 RK_PD7 RK_FUNC_GPIO &pcfg_pull_up>; //int
};
};
}修改i2c下的hynitron节点：
hynitron@38 {
compatible = "hynitron,hyn_ts";
reg = <0x38>;
pinctrl-names = "default";
pinctrl-0 = <&tp_gpio>;
hynitron,reset-gpio = <&gpio3 RK_PD6 GPIO_ACTIVE_LOW>;
hynitron,irq-gpio = <&gpio3 RK_PD7 IRQ_TYPE_EDGE_FALLING>;
hynitron,max-touch-number = <5>;
hynitron,display-coords = < 480 854>;
hynitron,have-key;
hynitron,key-number = <0>;
hynitron,key-code = <139 172 158>;
hynitron,key-y-coord = <900 900 900>;
hynitron,key-x-coord = <100 300 400>;
};