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

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  1 #include <linux/serial_sci.h>
  2 #include <linux/serial_core.h>
  3 #include <linux/io.h>
  4 #include <cpu/serial.h>
  5 #include <cpu/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 };
 38 

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