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
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