35 lines
874 B
C
Executable file
35 lines
874 B
C
Executable file
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/serial_sci.h>
|
|
#include <linux/serial_core.h>
|
|
#include <linux/io.h>
|
|
#include <cpu/serial.h>
|
|
|
|
#define SCPCR 0xA4000116
|
|
#define SCPDR 0xA4000136
|
|
|
|
static void sh770x_sci_init_pins(struct uart_port *port, unsigned int cflag)
|
|
{
|
|
unsigned short data;
|
|
|
|
/* We need to set SCPCR to enable RTS/CTS */
|
|
data = __raw_readw(SCPCR);
|
|
/* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/
|
|
__raw_writew(data & 0x0fcf, SCPCR);
|
|
|
|
if (!(cflag & CRTSCTS)) {
|
|
/* We need to set SCPCR to enable RTS/CTS */
|
|
data = __raw_readw(SCPCR);
|
|
/* Clear out SCP7MD1,0, SCP4MD1,0,
|
|
Set SCP6MD1,0 = {01} (output) */
|
|
__raw_writew((data & 0x0fcf) | 0x1000, SCPCR);
|
|
|
|
data = __raw_readb(SCPDR);
|
|
/* Set /RTS2 (bit6) = 0 */
|
|
__raw_writeb(data & 0xbf, SCPDR);
|
|
}
|
|
}
|
|
|
|
struct plat_sci_port_ops sh770x_sci_port_ops = {
|
|
.init_pins = sh770x_sci_init_pins,
|
|
};
|