Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[pandora-kernel.git] / arch / arm / plat-omap / devices.c
1 /*
2  * linux/arch/arm/plat-omap/devices.c
3  *
4  * Common platform device setup/initialization for OMAP1 and OMAP2
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 #include <linux/io.h>
17 #include <linux/slab.h>
18
19 #include <mach/hardware.h>
20 #include <asm/mach-types.h>
21 #include <asm/mach/map.h>
22
23 #include <plat/tc.h>
24 #include <plat/control.h>
25 #include <plat/board.h>
26 #include <plat/mmc.h>
27 #include <mach/gpio.h>
28 #include <plat/menelaus.h>
29 #include <plat/mcbsp.h>
30 #include <plat/omap44xx.h>
31
32 /*-------------------------------------------------------------------------*/
33
34 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
35
36 static struct platform_device **omap_mcbsp_devices;
37
38 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
39                                         int size)
40 {
41         int i;
42
43         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
44                                      GFP_KERNEL);
45         if (!omap_mcbsp_devices) {
46                 printk(KERN_ERR "Could not register McBSP devices\n");
47                 return;
48         }
49
50         for (i = 0; i < size; i++) {
51                 struct platform_device *new_mcbsp;
52                 int ret;
53
54                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
55                 if (!new_mcbsp)
56                         continue;
57                 new_mcbsp->dev.platform_data = &config[i];
58                 ret = platform_device_add(new_mcbsp);
59                 if (ret) {
60                         platform_device_put(new_mcbsp);
61                         continue;
62                 }
63                 omap_mcbsp_devices[i] = new_mcbsp;
64         }
65 }
66
67 #else
68 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
69                                         int size)
70 {  }
71 #endif
72
73 /*-------------------------------------------------------------------------*/
74
75 #if defined(CONFIG_SND_OMAP_SOC_MCPDM) || \
76                 defined(CONFIG_SND_OMAP_SOC_MCPDM_MODULE)
77
78 static struct resource mcpdm_resources[] = {
79         {
80                 .name           = "mcpdm_mem",
81                 .start          = OMAP44XX_MCPDM_BASE,
82                 .end            = OMAP44XX_MCPDM_BASE + SZ_4K,
83                 .flags          = IORESOURCE_MEM,
84         },
85         {
86                 .name           = "mcpdm_irq",
87                 .start          = OMAP44XX_IRQ_MCPDM,
88                 .end            = OMAP44XX_IRQ_MCPDM,
89                 .flags          = IORESOURCE_IRQ,
90         },
91 };
92
93 static struct platform_device omap_mcpdm_device = {
94         .name           = "omap-mcpdm",
95         .id             = -1,
96         .num_resources  = ARRAY_SIZE(mcpdm_resources),
97         .resource       = mcpdm_resources,
98 };
99
100 static void omap_init_mcpdm(void)
101 {
102         (void) platform_device_register(&omap_mcpdm_device);
103 }
104 #else
105 static inline void omap_init_mcpdm(void) {}
106 #endif
107
108 /*-------------------------------------------------------------------------*/
109
110 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
111         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
112
113 #define OMAP_MMC_NR_RES         2
114
115 /*
116  * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
117  */
118 int __init omap_mmc_add(const char *name, int id, unsigned long base,
119                                 unsigned long size, unsigned int irq,
120                                 struct omap_mmc_platform_data *data)
121 {
122         struct platform_device *pdev;
123         struct resource res[OMAP_MMC_NR_RES];
124         int ret;
125
126         pdev = platform_device_alloc(name, id);
127         if (!pdev)
128                 return -ENOMEM;
129
130         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
131         res[0].start = base;
132         res[0].end = base + size - 1;
133         res[0].flags = IORESOURCE_MEM;
134         res[1].start = res[1].end = irq;
135         res[1].flags = IORESOURCE_IRQ;
136
137         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
138         if (ret == 0)
139                 ret = platform_device_add_data(pdev, data, sizeof(*data));
140         if (ret)
141                 goto fail;
142
143         ret = platform_device_add(pdev);
144         if (ret)
145                 goto fail;
146
147         /* return device handle to board setup code */
148         data->dev = &pdev->dev;
149         return 0;
150
151 fail:
152         platform_device_put(pdev);
153         return ret;
154 }
155
156 #endif
157
158 /*-------------------------------------------------------------------------*/
159
160 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
161
162 #ifdef CONFIG_ARCH_OMAP2
163 #define OMAP_RNG_BASE           0x480A0000
164 #else
165 #define OMAP_RNG_BASE           0xfffe5000
166 #endif
167
168 static struct resource rng_resources[] = {
169         {
170                 .start          = OMAP_RNG_BASE,
171                 .end            = OMAP_RNG_BASE + 0x4f,
172                 .flags          = IORESOURCE_MEM,
173         },
174 };
175
176 static struct platform_device omap_rng_device = {
177         .name           = "omap_rng",
178         .id             = -1,
179         .num_resources  = ARRAY_SIZE(rng_resources),
180         .resource       = rng_resources,
181 };
182
183 static void omap_init_rng(void)
184 {
185         (void) platform_device_register(&omap_rng_device);
186 }
187 #else
188 static inline void omap_init_rng(void) {}
189 #endif
190
191 /*-------------------------------------------------------------------------*/
192
193 /* Numbering for the SPI-capable controllers when used for SPI:
194  * spi          = 1
195  * uwire        = 2
196  * mmc1..2      = 3..4
197  * mcbsp1..3    = 5..7
198  */
199
200 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
201
202 #define OMAP_UWIRE_BASE         0xfffb3000
203
204 static struct resource uwire_resources[] = {
205         {
206                 .start          = OMAP_UWIRE_BASE,
207                 .end            = OMAP_UWIRE_BASE + 0x20,
208                 .flags          = IORESOURCE_MEM,
209         },
210 };
211
212 static struct platform_device omap_uwire_device = {
213         .name      = "omap_uwire",
214         .id          = -1,
215         .num_resources  = ARRAY_SIZE(uwire_resources),
216         .resource       = uwire_resources,
217 };
218
219 static void omap_init_uwire(void)
220 {
221         /* FIXME define and use a boot tag; not all boards will be hooking
222          * up devices to the microwire controller, and multi-board configs
223          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
224          */
225
226         /* board-specific code must configure chipselects (only a few
227          * are normally used) and SCLK/SDI/SDO (each has two choices).
228          */
229         (void) platform_device_register(&omap_uwire_device);
230 }
231 #else
232 static inline void omap_init_uwire(void) {}
233 #endif
234
235 /*-------------------------------------------------------------------------*/
236
237 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
238
239 static struct resource wdt_resources[] = {
240         {
241                 .flags          = IORESOURCE_MEM,
242         },
243 };
244
245 static struct platform_device omap_wdt_device = {
246         .name      = "omap_wdt",
247         .id          = -1,
248         .num_resources  = ARRAY_SIZE(wdt_resources),
249         .resource       = wdt_resources,
250 };
251
252 static void omap_init_wdt(void)
253 {
254         if (cpu_is_omap16xx())
255                 wdt_resources[0].start = 0xfffeb000;
256         else if (cpu_is_omap2420())
257                 wdt_resources[0].start = 0x48022000; /* WDT2 */
258         else if (cpu_is_omap2430())
259                 wdt_resources[0].start = 0x49016000; /* WDT2 */
260         else if (cpu_is_omap343x())
261                 wdt_resources[0].start = 0x48314000; /* WDT2 */
262         else if (cpu_is_omap44xx())
263                 wdt_resources[0].start = 0x4a314000;
264         else
265                 return;
266
267         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
268
269         (void) platform_device_register(&omap_wdt_device);
270 }
271 #else
272 static inline void omap_init_wdt(void) {}
273 #endif
274
275 /*
276  * This gets called after board-specific INIT_MACHINE, and initializes most
277  * on-chip peripherals accessible on this board (except for few like USB):
278  *
279  *  (a) Does any "standard config" pin muxing needed.  Board-specific
280  *      code will have muxed GPIO pins and done "nonstandard" setup;
281  *      that code could live in the boot loader.
282  *  (b) Populating board-specific platform_data with the data drivers
283  *      rely on to handle wiring variations.
284  *  (c) Creating platform devices as meaningful on this board and
285  *      with this kernel configuration.
286  *
287  * Claiming GPIOs, and setting their direction and initial values, is the
288  * responsibility of the device drivers.  So is responding to probe().
289  *
290  * Board-specific knowlege like creating devices or pin setup is to be
291  * kept out of drivers as much as possible.  In particular, pin setup
292  * may be handled by the boot loader, and drivers should expect it will
293  * normally have been done by the time they're probed.
294  */
295 static int __init omap_init_devices(void)
296 {
297         /* please keep these calls, and their implementations above,
298          * in alphabetical order so they're easier to sort through.
299          */
300         omap_init_rng();
301         omap_init_mcpdm();
302         omap_init_uwire();
303         omap_init_wdt();
304         return 0;
305 }
306 arch_initcall(omap_init_devices);