arch/mips/mti-sead3/sead3-platform.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
   7  */
   8 #include <linux/init.h>
   9 #include <linux/irqchip/mips-gic.h>
  10 #include <linux/serial_8250.h>
  11
  12 #include <asm/mips-boards/sead3int.h>
  13
  14 #define UART(base)                                                      \
  15 {                                                                       \
  16         .mapbase        = base,                                         \
  17         .irq            = -1,                                           \
  18         .uartclk        = 14745600,                                     \
  19         .iotype         = UPIO_MEM32,                                   \
  20         .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \
  21         .regshift       = 2,                                            \
  22 }
  23
  24 static struct plat_serial8250_port uart8250_data[] = {
  25         UART(0x1f000900),   /* ttyS0 = USB   */
  26         UART(0x1f000800),   /* ttyS1 = RS232 */
  27         { },
  28 };
  29
  30 static struct platform_device uart8250_device = {
  31         .name                   = "serial8250",
  32         .id                     = PLAT8250_DEV_PLATFORM2,
  33         .dev                    = {
  34                 .platform_data  = uart8250_data,
  35         },
  36 };
  37
  38 static int __init uart8250_init(void)
  39 {
  40         if (gic_present) {
  41                 uart8250_data[0].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART0;
  42                 uart8250_data[1].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART1;
  43         } else {
  44                 uart8250_data[0].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART0;
  45                 uart8250_data[1].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART1;
  46         }
  47         return platform_device_register(&uart8250_device);
  48 }
  49
  50 device_initcall(uart8250_init);