1 #include <linux/serial_sci.h>
2 #include <linux/serial_core.h>
3 #include <linux/io.h>
4 #include <cpu/serial.h>
5 
6 #define SCPCR 0xA4000116
7 #define SCPDR 0xA4000136
8 
9 static void sh770x_sci_init_pins(struct uart_port *port, unsigned int cflag)
10 {
11 	unsigned short data;
12 
13 	/* We need to set SCPCR to enable RTS/CTS */
14 	data = __raw_readw(SCPCR);
15 	/* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/
16 	__raw_writew(data & 0x0fcf, SCPCR);
17 
18 	if (!(cflag & CRTSCTS)) {
19 		/* We need to set SCPCR to enable RTS/CTS */
20 		data = __raw_readw(SCPCR);
21 		/* Clear out SCP7MD1,0, SCP4MD1,0,
22 		   Set SCP6MD1,0 = {01} (output)  */
23 		__raw_writew((data & 0x0fcf) | 0x1000, SCPCR);
24 
25 		data = __raw_readb(SCPDR);
26 		/* Set /RTS2 (bit6) = 0 */
27 		__raw_writeb(data & 0xbf, SCPDR);
28 	}
29 }
30 
31 struct plat_sci_port_ops sh770x_sci_port_ops = {
32 	.init_pins	= sh770x_sci_init_pins,
33 };
34