/* * serial.c, Serial Interface Unit routines for NEC VR4100 series. * * Copyright (C) 2002 MontaVista Software Inc. * Author: Yoichi Yuasa * Copyright (C) 2003-2004 Yoichi Yuasa * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * Changes: * MontaVista Software Inc. or * - New creation, NEC VR4122 and VR4131 are supported. * - Added support for NEC VR4111 and VR4121. * * Yoichi Yuasa * - Added support for NEC VR4133. */ #include #include #include #include #include #include #include #include #include #include #define SIUIRSEL_TYPE1 KSEG1ADDR(0x0c000008) #define SIUIRSEL_TYPE2 KSEG1ADDR(0x0f000808) #define USE_RS232C 0x00 #define USE_IRDA 0x01 #define SIU_USES_IRDA 0x00 #define FIR_USES_IRDA 0x02 #define IRDA_MODULE_SHARP 0x00 #define IRDA_MODULE_TEMIC 0x04 #define IRDA_MODULE_HP 0x08 #define TMICTX 0x10 #define TMICMODE 0x20 #define SIU_BASE_TYPE1 0x0c000000UL /* VR4111 and VR4121 */ #define SIU_BASE_TYPE2 0x0f000800UL /* VR4122, VR4131 and VR4133 */ #define SIU_SIZE 0x8UL #define SIU_BASE_BAUD 1152000 /* VR4122, VR4131 and VR4133 DSIU Registers */ #define DSIU_BASE 0x0f000820UL #define DSIU_SIZE 0x8UL #define DSIU_BASE_BAUD 1152000 int vr41xx_serial_ports = 0; void vr41xx_select_siu_interface(siu_interface_t interface, irda_module_t module) { uint16_t val = USE_RS232C; /* Select RS-232C */ /* Select IrDA */ if (interface == SIU_IRDA) { switch (module) { case IRDA_SHARP: val = IRDA_MODULE_SHARP; break; case IRDA_TEMIC: val = IRDA_MODULE_TEMIC; break; case IRDA_HP: val = IRDA_MODULE_HP; break; default: printk(KERN_ERR "SIU: unknown IrDA module\n"); return; } val |= USE_IRDA | SIU_USES_IRDA; } switch (current_cpu_data.cputype) { case CPU_VR4111: case CPU_VR4121: writew(val, SIUIRSEL_TYPE1); break; case CPU_VR4122: case CPU_VR4131: case CPU_VR4133: writew(val, SIUIRSEL_TYPE2); break; default: printk(KERN_ERR "SIU: unsupported CPU of NEC VR4100 series\n"); break; } } void __init vr41xx_siu_init(void) { struct uart_port port; memset(&port, 0, sizeof(port)); port.line = vr41xx_serial_ports; port.uartclk = SIU_BASE_BAUD * 16; port.irq = SIU_IRQ; port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; switch (current_cpu_data.cputype) { case CPU_VR4111: case CPU_VR4121: port.mapbase = SIU_BASE_TYPE1; break; case CPU_VR4122: case CPU_VR4131: case CPU_VR4133: port.mapbase = SIU_BASE_TYPE2; break; default: printk(KERN_ERR "SIU: unsupported CPU of NEC VR4100 series\n"); return; } port.regshift = 0; port.iotype = UPIO_MEM; port.membase = ioremap(port.mapbase, SIU_SIZE); if (port.membase != NULL) { if (early_serial_setup(&port) == 0) { vr41xx_supply_clock(SIU_CLOCK); vr41xx_serial_ports++; return; } } printk(KERN_ERR "SIU: setup failed!\n"); } void __init vr41xx_dsiu_init(void) { struct uart_port port; if (current_cpu_data.cputype != CPU_VR4122 && current_cpu_data.cputype != CPU_VR4131 && current_cpu_data.cputype != CPU_VR4133) { printk(KERN_ERR "DSIU: unsupported CPU of NEC VR4100 series\n"); return; } memset(&port, 0, sizeof(port)); port.line = vr41xx_serial_ports; port.uartclk = DSIU_BASE_BAUD * 16; port.irq = DSIU_IRQ; port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; port.mapbase = DSIU_BASE; port.regshift = 0; port.iotype = UPIO_MEM; port.membase = ioremap(port.mapbase, DSIU_SIZE); if (port.membase != NULL) { if (early_serial_setup(&port) == 0) { vr41xx_supply_clock(DSIU_CLOCK); vr41xx_enable_dsiuint(DSIUINT_ALL); vr41xx_serial_ports++; return; } } printk(KERN_ERR "DSIU: setup failed!\n"); }