arch/mips/sgi-ip32/ip32-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) 2007 Ralf Baechle (ralf@linux-mips.org)
   7  */
   8 #include <linux/init.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/serial_8250.h>
  11 #include <linux/rtc/ds1685.h>
  12
  13 #include <asm/ip32/mace.h>
  14 #include <asm/ip32/ip32_ints.h>
  15
  16 extern void ip32_prepare_poweroff(void);
  17
  18 #define MACEISA_SERIAL1_OFFS   offsetof(struct sgi_mace, isa.serial1)
  19 #define MACEISA_SERIAL2_OFFS   offsetof(struct sgi_mace, isa.serial2)
  20
  21 #define MACE_PORT(offset,_irq)                                          \
  22 {                                                                       \
  23         .mapbase        = MACE_BASE + offset,                           \
  24         .irq            = _irq,                                         \
  25         .uartclk        = 1843200,                                      \
  26         .iotype         = UPIO_MEM,                                     \
  27         .flags          = UPF_SKIP_TEST|UPF_IOREMAP,                    \
  28         .regshift       = 8,                                            \
  29 }
  30
  31 static struct plat_serial8250_port uart8250_data[] = {
  32         MACE_PORT(MACEISA_SERIAL1_OFFS, MACEISA_SERIAL1_IRQ),
  33         MACE_PORT(MACEISA_SERIAL2_OFFS, MACEISA_SERIAL2_IRQ),
  34         { },
  35 };
  36
  37 static struct platform_device uart8250_device = {
  38         .name                   = "serial8250",
  39         .id                     = PLAT8250_DEV_PLATFORM,
  40         .dev                    = {
  41                 .platform_data  = uart8250_data,
  42         },
  43 };
  44
  45 static int __init uart8250_init(void)
  46 {
  47         return platform_device_register(&uart8250_device);
  48 }
  49
  50 device_initcall(uart8250_init);
  51
  52 static __init int meth_devinit(void)
  53 {
  54         struct platform_device *pd;
  55         int ret;
  56
  57         pd = platform_device_alloc("meth", -1);
  58         if (!pd)
  59                 return -ENOMEM;
  60
  61         ret = platform_device_add(pd);
  62         if (ret)
  63                 platform_device_put(pd);
  64
  65         return ret;
  66 }
  67
  68 device_initcall(meth_devinit);
  69
  70 static __init int sgio2audio_devinit(void)
  71 {
  72         struct platform_device *pd;
  73         int ret;
  74
  75         pd = platform_device_alloc("sgio2audio", -1);
  76         if (!pd)
  77                 return -ENOMEM;
  78
  79         ret = platform_device_add(pd);
  80         if (ret)
  81                 platform_device_put(pd);
  82
  83         return ret;
  84 }
  85
  86 device_initcall(sgio2audio_devinit);
  87
  88 static __init int sgio2btns_devinit(void)
  89 {
  90         return IS_ERR(platform_device_register_simple("sgibtns", -1, NULL, 0));
  91 }
  92
  93 device_initcall(sgio2btns_devinit);
  94
  95 #define MACE_RTC_RES_START (MACE_BASE + offsetof(struct sgi_mace, isa.rtc))
  96 #define MACE_RTC_RES_END (MACE_RTC_RES_START + 32767)
  97
  98 static struct resource ip32_rtc_resources[] = {
  99         {
 100                 .start  = MACEISA_RTC_IRQ,
 101                 .end    = MACEISA_RTC_IRQ,
 102                 .flags  = IORESOURCE_IRQ
 103         }, {
 104                 .start  = MACE_RTC_RES_START,
 105                 .end    = MACE_RTC_RES_END,
 106                 .flags  = IORESOURCE_MEM,
 107         }
 108 };
 109
 110 /* RTC registers on IP32 are each padded by 256 bytes (0x100). */
 111 static struct ds1685_rtc_platform_data
 112 ip32_rtc_platform_data[] = {
 113         {
 114                 .regstep = 0x100,
 115                 .bcd_mode = true,
 116                 .no_irq = false,
 117                 .uie_unsupported = false,
 118                 .access_type = ds1685_reg_direct,
 119                 .plat_prepare_poweroff = ip32_prepare_poweroff,
 120         },
 121 };
 122
 123 struct platform_device ip32_rtc_device = {
 124         .name                   = "rtc-ds1685",
 125         .id                     = -1,
 126         .dev                    = {
 127                 .platform_data  = ip32_rtc_platform_data,
 128         },
 129         .num_resources          = ARRAY_SIZE(ip32_rtc_resources),
 130         .resource               = ip32_rtc_resources,
 131 };
 132
 133 static __init int sgio2_rtc_devinit(void)
 134 {
 135         return platform_device_register(&ip32_rtc_device);
 136 }
 137
 138 device_initcall(sgio2_rtc_devinit);