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