1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef __MAILBOX_H 4 #define __MAILBOX_H 5 6 #include <linux/bits.h> 7 8 #define TXDONE_BY_IRQ BIT(0) /* controller has remote RTR irq */ 9 #define TXDONE_BY_POLL BIT(1) /* controller can read status of last TX */ 10 #define TXDONE_BY_ACK BIT(2) /* S/W ACK received by Client ticks the TX */ 11 12 #endif /* __MAILBOX_H */ 13