arch/xtensa/platforms/s6105/device.c

   1 /*
   2  * s6105 platform devices
   3  *
   4  * Copyright (c) 2009 emlix GmbH
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/init.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/serial.h>
  11 #include <linux/serial_8250.h>
  12
  13 #include <variant/hardware.h>
  14
  15 #define UART_INTNUM             4
  16
  17 static const signed char uart_irq_mappings[] = {
  18         S6_INTC_UART(0),
  19         S6_INTC_UART(1),
  20         -1,
  21 };
  22
  23 const signed char *platform_irq_mappings[NR_IRQS] = {
  24         [UART_INTNUM] = uart_irq_mappings,
  25 };
  26
  27 static struct plat_serial8250_port serial_platform_data[] = {
  28         {
  29                 .membase = (void *)S6_REG_UART + 0x0000,
  30                 .mapbase = S6_REG_UART + 0x0000,
  31                 .irq = UART_INTNUM,
  32                 .uartclk = S6_SCLK,
  33                 .regshift = 2,
  34                 .iotype = SERIAL_IO_MEM,
  35                 .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
  36         },
  37         {
  38                 .membase = (void *)S6_REG_UART + 0x1000,
  39                 .mapbase = S6_REG_UART + 0x1000,
  40                 .irq = UART_INTNUM,
  41                 .uartclk = S6_SCLK,
  42                 .regshift = 2,
  43                 .iotype = SERIAL_IO_MEM,
  44                 .flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST,
  45         },
  46         { },
  47 };
  48
  49 static struct platform_device platform_devices[] = {
  50         {
  51                 .name = "serial8250",
  52                 .id = PLAT8250_DEV_PLATFORM,
  53                 .dev = {
  54                         .platform_data = serial_platform_data,
  55                 },
  56         },
  57 };
  58
  59 static int __init device_init(void)
  60 {
  61         int i;
  62
  63         for (i = 0; i < ARRAY_SIZE(platform_devices); i++)
  64                 platform_device_register(&platform_devices[i]);
  65         return 0;
  66 }
  67 arch_initcall_sync(device_init);