Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / arch / arm / mach-ep93xx / ts72xx.c
1 /*
2  * arch/arm/mach-ep93xx/ts72xx.c
3  * Technologic Systems TS72xx SBC support.
4  *
5  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or (at
10  * your option) any later version.
11  */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/mm.h>
16 #include <linux/sched.h>
17 #include <linux/interrupt.h>
18 #include <linux/ioport.h>
19 #include <linux/mtd/physmap.h>
20 #include <linux/platform_device.h>
21 #include <linux/m48t86.h>
22 #include <linux/io.h>
23 #include <linux/i2c.h>
24 #include <mach/hardware.h>
25 #include <asm/mach-types.h>
26 #include <asm/mach/arch.h>
27 #include <asm/mach/map.h>
28
29 static struct map_desc ts72xx_io_desc[] __initdata = {
30         {
31                 .virtual        = TS72XX_MODEL_VIRT_BASE,
32                 .pfn            = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
33                 .length         = TS72XX_MODEL_SIZE,
34                 .type           = MT_DEVICE,
35         }, {
36                 .virtual        = TS72XX_OPTIONS_VIRT_BASE,
37                 .pfn            = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
38                 .length         = TS72XX_OPTIONS_SIZE,
39                 .type           = MT_DEVICE,
40         }, {
41                 .virtual        = TS72XX_OPTIONS2_VIRT_BASE,
42                 .pfn            = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
43                 .length         = TS72XX_OPTIONS2_SIZE,
44                 .type           = MT_DEVICE,
45         }, {
46                 .virtual        = TS72XX_RTC_INDEX_VIRT_BASE,
47                 .pfn            = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE),
48                 .length         = TS72XX_RTC_INDEX_SIZE,
49                 .type           = MT_DEVICE,
50         }, {
51                 .virtual        = TS72XX_RTC_DATA_VIRT_BASE,
52                 .pfn            = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE),
53                 .length         = TS72XX_RTC_DATA_SIZE,
54                 .type           = MT_DEVICE,
55         }
56 };
57
58 static struct map_desc ts72xx_nand_io_desc[] __initdata = {
59         {
60                 .virtual        = TS72XX_NAND_DATA_VIRT_BASE,
61                 .pfn            = __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
62                 .length         = TS72XX_NAND_DATA_SIZE,
63                 .type           = MT_DEVICE,
64         }, {
65                 .virtual        = TS72XX_NAND_CONTROL_VIRT_BASE,
66                 .pfn            = __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
67                 .length         = TS72XX_NAND_CONTROL_SIZE,
68                 .type           = MT_DEVICE,
69         }, {
70                 .virtual        = TS72XX_NAND_BUSY_VIRT_BASE,
71                 .pfn            = __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
72                 .length         = TS72XX_NAND_BUSY_SIZE,
73                 .type           = MT_DEVICE,
74         }
75 };
76
77 static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
78         {
79                 .virtual        = TS72XX_NAND_DATA_VIRT_BASE,
80                 .pfn            = __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
81                 .length         = TS72XX_NAND_DATA_SIZE,
82                 .type           = MT_DEVICE,
83         }, {
84                 .virtual        = TS72XX_NAND_CONTROL_VIRT_BASE,
85                 .pfn            = __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
86                 .length         = TS72XX_NAND_CONTROL_SIZE,
87                 .type           = MT_DEVICE,
88         }, {
89                 .virtual        = TS72XX_NAND_BUSY_VIRT_BASE,
90                 .pfn            = __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
91                 .length         = TS72XX_NAND_BUSY_SIZE,
92                 .type           = MT_DEVICE,
93         }
94 };
95
96 static void __init ts72xx_map_io(void)
97 {
98         ep93xx_map_io();
99         iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
100
101         /*
102          * The TS-7200 has NOR flash, the other models have NAND flash.
103          */
104         if (!board_is_ts7200()) {
105                 if (is_ts9420_installed()) {
106                         iotable_init(ts72xx_alternate_nand_io_desc,
107                                 ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
108                 } else {
109                         iotable_init(ts72xx_nand_io_desc,
110                                 ARRAY_SIZE(ts72xx_nand_io_desc));
111                 }
112         }
113 }
114
115 static struct physmap_flash_data ts72xx_flash_data = {
116         .width          = 1,
117 };
118
119 static struct resource ts72xx_flash_resource = {
120         .start          = TS72XX_NOR_PHYS_BASE,
121         .end            = TS72XX_NOR_PHYS_BASE + SZ_16M - 1,
122         .flags          = IORESOURCE_MEM,
123 };
124
125 static struct platform_device ts72xx_flash = {
126         .name           = "physmap-flash",
127         .id             = 0,
128         .dev            = {
129                 .platform_data  = &ts72xx_flash_data,
130         },
131         .num_resources  = 1,
132         .resource       = &ts72xx_flash_resource,
133 };
134
135 static unsigned char ts72xx_rtc_readbyte(unsigned long addr)
136 {
137         __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
138         return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE);
139 }
140
141 static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr)
142 {
143         __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
144         __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE);
145 }
146
147 static struct m48t86_ops ts72xx_rtc_ops = {
148         .readbyte       = ts72xx_rtc_readbyte,
149         .writebyte      = ts72xx_rtc_writebyte,
150 };
151
152 static struct platform_device ts72xx_rtc_device = {
153         .name           = "rtc-m48t86",
154         .id             = -1,
155         .dev            = {
156                 .platform_data  = &ts72xx_rtc_ops,
157         },
158         .num_resources  = 0,
159 };
160
161 static struct ep93xx_eth_data ts72xx_eth_data = {
162         .phy_id         = 1,
163 };
164
165 static void __init ts72xx_init_machine(void)
166 {
167         ep93xx_init_devices();
168         if (board_is_ts7200())
169                 platform_device_register(&ts72xx_flash);
170         platform_device_register(&ts72xx_rtc_device);
171
172         ep93xx_register_eth(&ts72xx_eth_data, 1);
173 }
174
175 MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
176         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
177         .phys_io        = EP93XX_APB_PHYS_BASE,
178         .io_pg_offst    = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
179         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
180         .map_io         = ts72xx_map_io,
181         .init_irq       = ep93xx_init_irq,
182         .timer          = &ep93xx_timer,
183         .init_machine   = ts72xx_init_machine,
184 MACHINE_END