这这个后面,才可以 i2c_add_driver 注册驱动 ; 1794 ·1795 把 i2c_driver 内部的 driver 的 owner 赋值,并把 bus 赋值为 i2c_bus_type ; 之后 1801 调用 driver_register 将 i2c_driver 内部的 device_driver 交给 driver 框架去初始化 ; driver_register drivers/base/driver.c 147intdriver_register(struc...
staticintmy_i2c_remove(structi2c_client*client){// 清理资源return0;}staticint__initmy_driver_init(void){returni2c_add_driver(&my_i2c_driver);}staticvoid__exitmy_driver_exit(void){i2c_del_driver(&my_i2c_driver);}module_init(my_driver_init);module_exit(my_driver_exit);MODULE_AUTHOR("Yo...
drivers/i2c/busses/i2c-qup.c(这是适配器的驱动) platform_driver_register qup_i2c_probe //在arch/arm/mach-msm/devices-msm8x60.c中定义了多少个gsbix_qup_i2c_resources就有多少个I2C Adapter,这个probe函数就会执行多少次 i2c_add_numbered_adapter i2c_register_adapter i2c_scan_static_board_info i2c...
然后调用i2c_register_board_info(1, xxxi2c_board_info, ARRAY_SIZE(xxxi2c_board_info)); 第一个参数是0还是1,我还不知道:-( 2、在另外一个设备驱动文件里,比如你放到/driver/char下做字符设备,一般是module_init(func_init())形式,则调用i2c_add_driver()即可,有几个要定义: static const struct i2c...
drivers: i2c: Add SAM0 I2C driver Browse files This adds a SERCOM I2C driver for SAM0 series chips. Tested with a SAMD21 chip on a SSD1306 display and a MLX90393 sensor. Only compile tested for SAMD20 and SAMR21. Signed-off-by: Derek Hageman <hageman@inthat.cloud>...
This pull request introduces: Support for the Cadence I2C Controller version 1.4. Provide Functionality for I2C Master Mode operations. Add I2C Support for kv260_r5 board to use EEPROM.
controller + +General +--- + +The bcm2079x is an integrated controller for contactless communication. + +Host Interfaces: I2C, SPI and UART, this driver supports I2C. + +The Driver +--- + +The bcm2079x-i2c driver can be found under drivers/nfc/bcm2079x/bcm2079x-i2c.c and +its...
for non-legacy I2C drivers. > > The device is supposed to be present in DT (or ACPI tables) already. > Agreed. Also by looking at the driver's probe function I see that the device lookups a 'vin' and 'vdd' regulators supplies and it fails if ...
⑤I2CR的Bit7 仅在i2c_init函数使用。用于开启和关闭I2C ⑥I2SR的Bit4 尽在i2c_check_and_clear_error有用到,清零。用于清除仲裁丢失错误位。 ⑦I2SR的Bit5 依据芯片手册的1467页,可以得到:检测到停止信号时,I2SR的Bit5跳变为0;检测到起始信号时,I2SR的Bit5跳变为1(个人认为言外之意即:检测起始信号前,...
分配i2c_client结构体,设置其adapter等成员,驱动中可以将i2c_client作为参数调用i2c_transfer、i2c_master_send、i2c_master_recv等函数。 (3)主控、mux驱动层 如果主控设备(i2c_add_adapter)和mux驱动(i2c_add_driver)都存在,则最终会分配i2c_client结构体,并将其挂到mux驱动(i2c_driver)的clients链表上边...