/* I2C12 */
#if defined(CONFIG_PN65N_NFC)
static struct i2c_board_info i2c_devs12_emul[] __initdata = {
};
#endif
聲明一個i2c board 結構體.
#if defined(CONFIG_PN65N_NFC)
static struct i2c_gpio_platform_data i2c12_platdata = {
.sda_pin = GPIO_NFC_SDA_18V,
.scl_pin = GPIO_NFC_SCL_18V,
.udelay = 2, /* 250 kHz */
.sda_is_open_drain = 0,
.scl_is_open_drain = 0,
.scl_is_output_only = 0,
};
static struct platform_device s3c_device_i2c12 = {
.name = "i2c-gpio",
.id = 12,
.dev.platform_data = &i2c12_platdata,
};
#endif
填寫平臺設備內容, 確定模擬i2c 的GPIO , 以及i2c speed .時序.
#if defined(CONFIG_PN65N_NFC) i2c_register_board_info(12, i2c_devs12_emul, ARRAY_SIZE(i2c_devs12_emul)); #endif
註冊控制器平臺設備.
# # I2C Hardware Bus support # # # I2C system bus drivers (mostly embedded / system-on-chip) # # CONFIG_I2C_DESIGNWARE is not set CONFIG_I2C_GPIO=y # CONFIG_I2C_OCORES is not set # CONFIG_I2C_PCA_PLATFORM is not set # CONFIG_I2C_PXA_PCI is not set CONFIG_HAVE_S3C2410_I2C=y CONFIG_I2C_S3C2410=y # CONFIG_I2C_SIMTEC is not set # CONFIG_I2C_XILINX is not set
在config 填寫需要的Make 控制宏