1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/serial_sci.h>
3 #include <linux/serial_core.h>
4 #include <linux/io.h>
5 #include <cpu/serial.h>
6 #include <cpu/gpio.h>
7 
8 static void sh7720_sci_init_pins(struct uart_port *port, unsigned int cflag)
9 {
10 	unsigned short data;
11 
12 	if (cflag & CRTSCTS) {
13 		/* enable RTS/CTS */
14 		if (port->mapbase == 0xa4430000) { /* SCIF0 */
15 			/* Clear PTCR bit 9-2; enable all scif pins but sck */
16 			data = __raw_readw(PORT_PTCR);
17 			__raw_writew((data & 0xfc03), PORT_PTCR);
18 		} else if (port->mapbase == 0xa4438000) { /* SCIF1 */
19 			/* Clear PVCR bit 9-2 */
20 			data = __raw_readw(PORT_PVCR);
21 			__raw_writew((data & 0xfc03), PORT_PVCR);
22 		}
23 	} else {
24 		if (port->mapbase == 0xa4430000) { /* SCIF0 */
25 			/* Clear PTCR bit 5-2; enable only tx and rx  */
26 			data = __raw_readw(PORT_PTCR);
27 			__raw_writew((data & 0xffc3), PORT_PTCR);
28 		} else if (port->mapbase == 0xa4438000) { /* SCIF1 */
29 			/* Clear PVCR bit 5-2 */
30 			data = __raw_readw(PORT_PVCR);
31 			__raw_writew((data & 0xffc3), PORT_PVCR);
32 		}
33 	}
34 }
35 
36 struct plat_sci_port_ops sh7720_sci_port_ops = {
37 	.init_pins	= sh7720_sci_init_pins,
38 };
39