#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */
+#define TIOCGRS485 0x542E
+#define TIOCSRS485 0x542F
+
#define FIONCLEX 0x5450
#define FIOCLEX 0x5451
#define FIOASYNC 0x5452
#define __ASM_ARCH_BOARD_H
#include <linux/types.h>
+#include <linux/serial.h>
#define GPIO_PIN_NONE (-1)
short use_dma_tx; /* use transmit DMA? */
short use_dma_rx; /* use receive DMA? */
void __iomem *regs; /* virtual base address, if any */
+ struct serial_rs485 rs485; /* rs485 settings */
};
void at32_map_usart(unsigned int hw_id, unsigned int line, int flags);
struct platform_device *at32_add_device_usart(unsigned int id);