tty/serial/sunzilog.h

1 /* SPDX-License-Identifier: GPL-2.0 */
24 #define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
108 #define	X1CLK		0x0	/* x1 clock mode */
109 #define	X16CLK		0x40	/* x16 clock mode */
110 #define	X32CLK		0x80	/* x32 clock mode */
111 #define	X64CLK		0xC0	/* x64 clock 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) */
167 /* Write Register 11 (Clock Mode control) */
169 #define	TRxCTC	1	/* TRxC = Transmit clock */
170 #define	TRxCBR	2	/* TRxC = BR Generator Output */
173 #define	TCRTxCP	0	/* Transmit clock = RTxC pin */
174 #define	TCTRxCP	8	/* Transmit clock = TRxC pin */
175 #define	TCBR	0x10	/* Transmit clock = BR Generator output */
176 #define	TCDPLL	0x18	/* Transmit clock = DPLL output */
177 #define	RCRTxCP	0	/* Receive clock = RTxC pin */
178 #define	RCTRxCP	0x20	/* Receive clock = TRxC pin */
179 #define	RCBR	0x40	/* Receive clock = BR Generator output */
180 #define	RCDPLL	0x60	/* Receive clock = DPLL output */
183 /* Write Register 12 (lower byte of baud rate generator time constant) */
185 /* Write Register 13 (upper byte of baud rate generator time constant) */
188 #define	BRENAB 	1	/* Baud rate generator enable */
189 #define	BRSRC	2	/* Baud rate generator source */
194 #define	RMC	0x40	/* Reset missing clock */
196 #define	SSBR	0x80	/* Set DPLL source = BR generator */
239 /* Read Register 2 (channel b only) - Interrupt vector */
268 #define	CLK1MIS	0x80		/* One clock missing */
270 /* Read Register 12 (lower byte of baud rate generator constant) */
272 /* Read Register 13 (upper byte of baud rate generator constant) */
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); \