arch/mips/bcm63xx/dev-uart.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) 2008 Maxime Bizon <mbizon@freebox.fr>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/platform_device.h>
  12 #include <bcm63xx_cpu.h>
  13 #include <bcm63xx_dev_uart.h>
  14
  15 static struct resource uart0_resources[] = {
  16         {
  17                 /* start & end filled at runtime */
  18                 .flags          = IORESOURCE_MEM,
  19         },
  20         {
  21                 /* start filled at runtime */
  22                 .flags          = IORESOURCE_IRQ,
  23         },
  24 };
  25
  26 static struct resource uart1_resources[] = {
  27         {
  28                 /* start & end filled at runtime */
  29                 .flags          = IORESOURCE_MEM,
  30         },
  31         {
  32                 /* start filled at runtime */
  33                 .flags          = IORESOURCE_IRQ,
  34         },
  35 };
  36
  37 static struct platform_device bcm63xx_uart_devices[] = {
  38         {
  39                 .name           = "bcm63xx_uart",
  40                 .id             = 0,
  41                 .num_resources  = ARRAY_SIZE(uart0_resources),
  42                 .resource       = uart0_resources,
  43         },
  44
  45         {
  46                 .name           = "bcm63xx_uart",
  47                 .id             = 1,
  48                 .num_resources  = ARRAY_SIZE(uart1_resources),
  49                 .resource       = uart1_resources,
  50         }
  51 };
  52
  53 int __init bcm63xx_uart_register(unsigned int id)
  54 {
  55         if (id >= ARRAY_SIZE(bcm63xx_uart_devices))
  56                 return -ENODEV;
  57
  58         if (id == 1 && (!BCMCPU_IS_3368() && !BCMCPU_IS_6358() &&
  59                 !BCMCPU_IS_6368()))
  60                 return -ENODEV;
  61
  62         if (id == 0) {
  63                 uart0_resources[0].start = bcm63xx_regset_address(RSET_UART0);
  64                 uart0_resources[0].end = uart0_resources[0].start +
  65                         RSET_UART_SIZE - 1;
  66                 uart0_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0);
  67         }
  68
  69         if (id == 1) {
  70                 uart1_resources[0].start = bcm63xx_regset_address(RSET_UART1);
  71                 uart1_resources[0].end = uart1_resources[0].start +
  72                         RSET_UART_SIZE - 1;
  73                 uart1_resources[1].start = bcm63xx_get_irq_number(IRQ_UART1);
  74         }
  75
  76         return platform_device_register(&bcm63xx_uart_devices[id]);
  77 }