Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
[linux-2.6] / arch / arm / mach-omap1 / devices.c
1 /*
2  * linux/arch/arm/mach-omap1/devices.c
3  *
4  * OMAP1 platform device setup/initialization
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16
17 #include <asm/hardware.h>
18 #include <asm/io.h>
19 #include <asm/mach-types.h>
20 #include <asm/mach/map.h>
21
22 #include <asm/arch/tc.h>
23 #include <asm/arch/board.h>
24 #include <asm/arch/mux.h>
25 #include <asm/arch/gpio.h>
26
27 /*-------------------------------------------------------------------------*/
28
29 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
30
31 #define OMAP_RTC_BASE           0xfffb4800
32
33 static struct resource rtc_resources[] = {
34         {
35                 .start          = OMAP_RTC_BASE,
36                 .end            = OMAP_RTC_BASE + 0x5f,
37                 .flags          = IORESOURCE_MEM,
38         },
39         {
40                 .start          = INT_RTC_TIMER,
41                 .flags          = IORESOURCE_IRQ,
42         },
43         {
44                 .start          = INT_RTC_ALARM,
45                 .flags          = IORESOURCE_IRQ,
46         },
47 };
48
49 static struct platform_device omap_rtc_device = {
50         .name           = "omap_rtc",
51         .id             = -1,
52         .num_resources  = ARRAY_SIZE(rtc_resources),
53         .resource       = rtc_resources,
54 };
55
56 static void omap_init_rtc(void)
57 {
58         (void) platform_device_register(&omap_rtc_device);
59 }
60 #else
61 static inline void omap_init_rtc(void) {}
62 #endif
63
64 #if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
65
66 #if defined(CONFIG_ARCH_OMAP15XX)
67 #  define OMAP1_MBOX_SIZE       0x23
68 #  define INT_DSP_MAILBOX1      INT_1510_DSP_MAILBOX1
69 #elif defined(CONFIG_ARCH_OMAP16XX)
70 #  define OMAP1_MBOX_SIZE       0x2f
71 #  define INT_DSP_MAILBOX1      INT_1610_DSP_MAILBOX1
72 #endif
73
74 #define OMAP1_MBOX_BASE         IO_ADDRESS(OMAP16XX_MAILBOX_BASE)
75
76 static struct resource mbox_resources[] = {
77         {
78                 .start          = OMAP1_MBOX_BASE,
79                 .end            = OMAP1_MBOX_BASE + OMAP1_MBOX_SIZE,
80                 .flags          = IORESOURCE_MEM,
81         },
82         {
83                 .start          = INT_DSP_MAILBOX1,
84                 .flags          = IORESOURCE_IRQ,
85         },
86 };
87
88 static struct platform_device mbox_device = {
89         .name           = "mailbox",
90         .id             = -1,
91         .num_resources  = ARRAY_SIZE(mbox_resources),
92         .resource       = mbox_resources,
93 };
94
95 static inline void omap_init_mbox(void)
96 {
97         platform_device_register(&mbox_device);
98 }
99 #else
100 static inline void omap_init_mbox(void) { }
101 #endif
102
103 #if defined(CONFIG_OMAP_STI)
104
105 #define OMAP1_STI_BASE          IO_ADDRESS(0xfffea000)
106 #define OMAP1_STI_CHANNEL_BASE  (OMAP1_STI_BASE + 0x400)
107
108 static struct resource sti_resources[] = {
109         {
110                 .start          = OMAP1_STI_BASE,
111                 .end            = OMAP1_STI_BASE + SZ_1K - 1,
112                 .flags          = IORESOURCE_MEM,
113         },
114         {
115                 .start          = OMAP1_STI_CHANNEL_BASE,
116                 .end            = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
117                 .flags          = IORESOURCE_MEM,
118         },
119         {
120                 .start          = INT_1610_STI,
121                 .flags          = IORESOURCE_IRQ,
122         }
123 };
124
125 static struct platform_device sti_device = {
126         .name           = "sti",
127         .id             = -1,
128         .num_resources  = ARRAY_SIZE(sti_resources),
129         .resource       = sti_resources,
130 };
131
132 static inline void omap_init_sti(void)
133 {
134         platform_device_register(&sti_device);
135 }
136 #else
137 static inline void omap_init_sti(void) {}
138 #endif
139
140 /*-------------------------------------------------------------------------*/
141
142 /*
143  * This gets called after board-specific INIT_MACHINE, and initializes most
144  * on-chip peripherals accessible on this board (except for few like USB):
145  *
146  *  (a) Does any "standard config" pin muxing needed.  Board-specific
147  *      code will have muxed GPIO pins and done "nonstandard" setup;
148  *      that code could live in the boot loader.
149  *  (b) Populating board-specific platform_data with the data drivers
150  *      rely on to handle wiring variations.
151  *  (c) Creating platform devices as meaningful on this board and
152  *      with this kernel configuration.
153  *
154  * Claiming GPIOs, and setting their direction and initial values, is the
155  * responsibility of the device drivers.  So is responding to probe().
156  *
157  * Board-specific knowlege like creating devices or pin setup is to be
158  * kept out of drivers as much as possible.  In particular, pin setup
159  * may be handled by the boot loader, and drivers should expect it will
160  * normally have been done by the time they're probed.
161  */
162 static int __init omap1_init_devices(void)
163 {
164         /* please keep these calls, and their implementations above,
165          * in alphabetical order so they're easier to sort through.
166          */
167
168         omap_init_mbox();
169         omap_init_rtc();
170         omap_init_sti();
171
172         return 0;
173 }
174 arch_initcall(omap1_init_devices);
175