tty/serial/sunzilog.h

1 /* SPDX-License-Identifier: GPL-2.0 */
24 #define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
28 #define	FLAG	0x7e  macro
82 #define	SYNC_L_INH	0x2	/* Sync Character Load Inhibit */
98 #define	SYNC_ENAB	0	/* Sync Modes Enable */
103 #define	MONSYNC		0	/* 8 Bit Sync character */
104 #define	BISYNC		0x10	/* 16 bit sync character */
105 #define	SDLC		0x20	/* SDLC Mode (01111110 Sync Flag) */
106 #define	EXTSYNC		0x30	/* External Sync Mode */
118 #define	SDLC_CRC	0x4	/* SDLC/CRC-16 */
128 /* Write Register 6 (Sync bits 0-7/SDLC Address Field) */
130 /* Write Register 7 (Sync bits 8-15/SDLC 01111110) */
133 #define	AUTO_TxFLAG	1	/* Automatic Tx SDLC Flag */
156 #define	BIT6	1	/* 6 bit/8bit sync */
158 #define	ABUNDER	4	/* Abort/flag on SDLC xmit underrun */
159 #define	MARKIDLE 8	/* Mark/flag on idle */
206 #define	SYNCIE	0x10	/* Sync/hunt IE */
217 #define	SYNC		0x10	/* Sync/hunt */  macro
239 /* Read Register 2 (channel b only) - Interrupt vector */
277 #define ZS_CLEARERR(channel)    do { sbus_writeb(ERR_RES, &channel->control); \
280 #define ZS_CLEARSTAT(channel)   do { sbus_writeb(RES_EXT_INT, &channel->control); \
283 #define ZS_CLEARFIFO(channel)   do { sbus_readb(&channel->data); \
285 				     sbus_readb(&channel->data); \
287 				     sbus_readb(&channel->data); \