219 /* Terminate a negotiated mode. */
226 	switch (port->ieee1284.mode) {  in parport_ieee1284_terminate()
230 		/* Terminate from EPP mode. */  in parport_ieee1284_terminate()
304 	port->ieee1284.mode = IEEE1284_MODE_COMPAT;  in parport_ieee1284_terminate()
307 	DPRINTK (KERN_DEBUG "%s: In compatibility (forward idle) mode\n",  in parport_ieee1284_terminate()
313  *	parport_negotiate - negotiate an IEEE 1284 mode
315  *	@mode: mode to negotiate to
317  *	Use this to negotiate to a particular IEEE 1284 transfer mode.
318  *	The @mode parameter should be one of the constants in
322  *	negotiation to the mode specified, -1 if the peripheral is not
327 int parport_negotiate (struct parport *port, int mode)  in parport_negotiate()  argument
330 	if (mode == IEEE1284_MODE_COMPAT)  in parport_negotiate()
335 	int m = mode & ~IEEE1284_ADDR;  in parport_negotiate()
342 	if (port->ieee1284.mode == mode)  in parport_negotiate()
346 	if ((port->ieee1284.mode & ~IEEE1284_ADDR) == (mode & ~IEEE1284_ADDR)){  in parport_negotiate()
347 		port->ieee1284.mode = mode;  in parport_negotiate()
351 	/* Go to compatibility forward idle mode */  in parport_negotiate()
352 	if (port->ieee1284.mode != IEEE1284_MODE_COMPAT)  in parport_negotiate()
355 	if (mode == IEEE1284_MODE_COMPAT)  in parport_negotiate()
356 		/* Compatibility mode: no negotiation. */  in parport_negotiate()
359 	switch (mode) {  in parport_negotiate()
371 	if (mode & IEEE1284_EXT_LINK)  in parport_negotiate()
434 			 "%s: Mode 0x%02x not supported? (0x%02x)\n",  in parport_negotiate()
435 			 port->name, mode, port->ops->read_status (port));  in parport_negotiate()
443 	if (mode && !xflag) {  in parport_negotiate()
444 		/* Mode not supported. */  in parport_negotiate()
445 		DPRINTK (KERN_DEBUG "%s: Mode 0x%02x rejected by peripheral\n",  in parport_negotiate()
446 			 port->name, mode);  in parport_negotiate()
452 	if (mode & IEEE1284_EXT_LINK) {  in parport_negotiate()
453 		m = mode & 0x7f;  in parport_negotiate()
485 				 "%s: Mode 0x%02x not supported? (0x%02x)\n",  in parport_negotiate()
486 				 port->name, mode,  in parport_negotiate()
497 			/* Extended mode not supported. */  in parport_negotiate()
498 			DPRINTK (KERN_DEBUG "%s: Extended mode 0x%02x not "  in parport_negotiate()
499 				 "supported\n", port->name, mode);  in parport_negotiate()
507 	/* Mode is supported */  in parport_negotiate()
508 	DPRINTK (KERN_DEBUG "%s: In mode 0x%02x\n", port->name, mode);  in parport_negotiate()
509 	port->ieee1284.mode = mode;  in parport_negotiate()
512 	if (!(mode & IEEE1284_EXT_LINK) && (m & IEEE1284_MODE_ECP)) {  in parport_negotiate()
532 	} else switch (mode) {  in parport_negotiate()
589  *	specified, using the IEEE 1284 transfer mode most recently
591  *	mode supports forward transfers (host to peripheral).
606 	int mode = port->ieee1284.mode;  in parport_write()
607 	int addr = mode & IEEE1284_ADDR;  in parport_write()
611 	mode &= ~(IEEE1284_DEVICEID | IEEE1284_ADDR);  in parport_write()
613 	/* Use the mode we're in. */  in parport_write()
614 	switch (mode) {  in parport_write()
620 		DPRINTK (KERN_DEBUG "%s: Using compatibility mode\n",  in parport_write()
626 		DPRINTK (KERN_DEBUG "%s: Using EPP mode\n", port->name);  in parport_write()
634 		DPRINTK (KERN_DEBUG "%s: Using software-emulated EPP mode\n",  in parport_write()
644 		DPRINTK (KERN_DEBUG "%s: Using ECP mode\n", port->name);  in parport_write()
653 		DPRINTK (KERN_DEBUG "%s: Using software-emulated ECP mode\n",  in parport_write()
665 		DPRINTK (KERN_DEBUG "%s: Unknown mode 0x%02x\n", port->name,  in parport_write()
666 			port->ieee1284.mode);  in parport_write()
683  *	specified, using the IEEE 1284 transfer mode most recently
685  *	mode supports reverse transfers (peripheral to host).
700 	int mode = port->physport->ieee1284.mode;  in parport_read()
701 	int addr = mode & IEEE1284_ADDR;  in parport_read()
705 	mode &= ~(IEEE1284_DEVICEID | IEEE1284_ADDR);  in parport_read()
707 	/* Use the mode we're in. */  in parport_read()
708 	switch (mode) {  in parport_read()
710 		/* if we can tri-state use BYTE mode instead of NIBBLE mode,  in parport_read()
711 		 * if that fails, revert to NIBBLE mode -- ought to store somewhere  in parport_read()
712 		 * the device's ability to do BYTE mode reverse transfers, so we don't  in parport_read()
717 			/* got into BYTE mode OK */  in parport_read()
718 			DPRINTK (KERN_DEBUG "%s: Using byte mode\n", port->name);  in parport_read()
727 		DPRINTK (KERN_DEBUG "%s: Using nibble mode\n", port->name);  in parport_read()
732 		DPRINTK (KERN_DEBUG "%s: Using byte mode\n", port->name);  in parport_read()
737 		DPRINTK (KERN_DEBUG "%s: Using EPP mode\n", port->name);  in parport_read()
745 		DPRINTK (KERN_DEBUG "%s: Using software-emulated EPP mode\n",  in parport_read()
755 		DPRINTK (KERN_DEBUG "%s: Using ECP mode\n", port->name);  in parport_read()
760 		DPRINTK (KERN_DEBUG "%s: Using software-emulated ECP mode\n",  in parport_read()
766 		DPRINTK (KERN_DEBUG "%s: Unknown mode 0x%02x\n", port->name,  in parport_read()
767 			 port->physport->ieee1284.mode);  in parport_read()