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