xref: /openbmc/linux/arch/sh/kernel/cpu/sh4a/serial-sh7722.c (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
1*b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
261a6976bSPaul Mundt #include <linux/serial_sci.h>
361a6976bSPaul Mundt #include <linux/serial_core.h>
461a6976bSPaul Mundt #include <linux/io.h>
561a6976bSPaul Mundt 
661a6976bSPaul Mundt #define PSCR 0xA405011E
761a6976bSPaul Mundt 
sh7722_sci_init_pins(struct uart_port * port,unsigned int cflag)861a6976bSPaul Mundt static void sh7722_sci_init_pins(struct uart_port *port, unsigned int cflag)
961a6976bSPaul Mundt {
1061a6976bSPaul Mundt 	unsigned short data;
1161a6976bSPaul Mundt 
1261a6976bSPaul Mundt 	if (port->mapbase == 0xffe00000) {
1361a6976bSPaul Mundt 		data = __raw_readw(PSCR);
1461a6976bSPaul Mundt 		data &= ~0x03cf;
1561a6976bSPaul Mundt 		if (!(cflag & CRTSCTS))
1661a6976bSPaul Mundt 			data |= 0x0340;
1761a6976bSPaul Mundt 
1861a6976bSPaul Mundt 		__raw_writew(data, PSCR);
1961a6976bSPaul Mundt 	}
2061a6976bSPaul Mundt }
2161a6976bSPaul Mundt 
2261a6976bSPaul Mundt struct plat_sci_port_ops sh7722_sci_port_ops = {
2361a6976bSPaul Mundt 	.init_pins	= sh7722_sci_init_pins,
2461a6976bSPaul Mundt };
25