arch/sh/kernel/cpu/sh3/serial-sh7720.c

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