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| ret = gpio_request_array(mx6q_sabresd_flexcan_gpios, ARRAY_SIZE(mx6q_sabresd_flexcan_gpios));static struct gpio mx6q_sabresd_flexcan_gpios[] = { { SABRESD_CAN1_STBY, GPIOF_OUT_INIT_LOW, "flexcan1-stby" },};#define SABRESD_CAN1_STBY IMX_GPIO_NR(4, 5)/* There's a off-by-one betweem the gpio bank number and the gpiochip *//* range e.g. GPIO_1_5 is gpio 5 under linux */#define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr))以下的bank ,nr是什么意思？ #define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr)) |
转载于:https://www.cnblogs.com/Ph-one/p/9056198.html