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