serial-sh7720.c

Go to the documentation of this file.

#include <linux/serial_sci.h>
#include <linux/serial_core.h>
#include <linux/io.h>
#include <cpu/serial.h>
#include <cpu/gpio.h>

static void sh7720_sci_init_pins(struct uart_port *port, unsigned int cflag)
{
    unsigned short data;

    if (cflag & CRTSCTS) {
        /* enable RTS/CTS */
        if (port->mapbase == 0xa4430000) { /* SCIF0 */
            /* Clear PTCR bit 9-2; enable all scif pins but sck */
            data = __raw_readw(PORT_PTCR);
            __raw_writew((data & 0xfc03), PORT_PTCR);
        } else if (port->mapbase == 0xa4438000) { /* SCIF1 */
            /* Clear PVCR bit 9-2 */
            data = __raw_readw(PORT_PVCR);
            __raw_writew((data & 0xfc03), PORT_PVCR);
        }
    } else {
        if (port->mapbase == 0xa4430000) { /* SCIF0 */
            /* Clear PTCR bit 5-2; enable only tx and rx  */
            data = __raw_readw(PORT_PTCR);
            __raw_writew((data & 0xffc3), PORT_PTCR);
        } else if (port->mapbase == 0xa4438000) { /* SCIF1 */
            /* Clear PVCR bit 5-2 */
            data = __raw_readw(PORT_PVCR);
            __raw_writew((data & 0xffc3), PORT_PVCR);
        }
    }
}

struct plat_sci_port_ops sh7720_sci_port_ops = {
    .init_pins  = sh7720_sci_init_pins,
};