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
8static 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
36struct plat_sci_port_ops sh7720_sci_port_ops = {
37	.init_pins	= sh7720_sci_init_pins,
38};
39