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Linux/arch/mips/sgi-ip32/ip32-platform.c

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  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                 .alloc_io_resources = true,
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);
139 

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