MSM8998(高通835处理器)外接指纹识别传感器linux驱动详解

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驱动名称：fpc1020.c

平台：msm8998

描述指纹传感器设备的结构：

struct fpc1020_data {struct device *dev;        struct wake_lock ttw_wl;int irq_gpio;int rst_gpio;               //复位gpio号int irq_num;                 //中断号struct mutex lock;bool prepared;struct pinctrl         *ts_pinctrl;struct pinctrl_state   *gpio_state_active;struct pinctrl_state   *gpio_state_suspend;#ifdef ONEPLUS_EDIT        int EN_VDD_gpio;        int id0_gpio;        int id1_gpio;        int id2_gpio;        struct input_dev*input_dev;        int screen_state;                  //状态 ： 1: on 0:off        int sensor_version;               //传感器的版本号：0x01:fpc1245 0x02:fpc1263#endif#if defined(CONFIG_FB)struct notifier_block fb_notif;#endifstruct work_struct pm_work;int proximity_state;              /* 0:far 1:near */bool irq_enabled;spinlock_t irq_lock;struct completion irq_sent;};

fpc1020驱动使用platform总线匹配硬件设备，驱动如下：

static struct of_device_id fpc1020_of_match[] = {{ .compatible = "fpc,fpc1020", },    //设备树匹配的属性{}};MODULE_DEVICE_TABLE(of, fpc1020_of_match);static struct platform_driver fpc1020_driver = {.driver = {.name= "fpc1020",.owner= THIS_MODULE,.of_match_table = fpc1020_of_match,  //设备树match函数},.probe = fpc1020_probe,    //匹配函数}; module_platform_driver(fpc1020_driver);

匹配的设备树信息如下：

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