Pull cpu-hotplug into release branch
[linux-2.6] / 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/config.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17
18 #include <asm/hardware.h>
19 #include <asm/io.h>
20 #include <asm/mach-types.h>
21 #include <asm/mach/map.h>
22
23 #include <asm/arch/tc.h>
24 #include <asm/arch/board.h>
25 #include <asm/arch/mux.h>
26 #include <asm/arch/gpio.h>
27 #include <asm/arch/menelaus.h>
28
29 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
30
31 #define OMAP1_I2C_BASE          0xfffb3800
32 #define OMAP2_I2C_BASE1         0x48070000
33 #define OMAP_I2C_SIZE           0x3f
34 #define OMAP1_I2C_INT           INT_I2C
35 #define OMAP2_I2C_INT1          56
36
37 static struct resource i2c_resources1[] = {
38         {
39                 .start          = 0,
40                 .end            = 0,
41                 .flags          = IORESOURCE_MEM,
42         },
43         {
44                 .start          = 0,
45                 .flags          = IORESOURCE_IRQ,
46         },
47 };
48
49 /* DMA not used; works around erratum writing to non-empty i2c fifo */
50
51 static struct platform_device omap_i2c_device1 = {
52         .name           = "i2c_omap",
53         .id             = 1,
54         .num_resources  = ARRAY_SIZE(i2c_resources1),
55         .resource       = i2c_resources1,
56 };
57
58 /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
59 static void omap_init_i2c(void)
60 {
61         if (cpu_is_omap24xx()) {
62                 i2c_resources1[0].start = OMAP2_I2C_BASE1;
63                 i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
64                 i2c_resources1[1].start = OMAP2_I2C_INT1;
65         } else {
66                 i2c_resources1[0].start = OMAP1_I2C_BASE;
67                 i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
68                 i2c_resources1[1].start = OMAP1_I2C_INT;
69         }
70
71         /* FIXME define and use a boot tag, in case of boards that
72          * either don't wire up I2C, or chips that mux it differently...
73          * it can include clocking and address info, maybe more.
74          */
75         if (cpu_is_omap24xx()) {
76                 omap_cfg_reg(M19_24XX_I2C1_SCL);
77                 omap_cfg_reg(L15_24XX_I2C1_SDA);
78         } else {
79                 omap_cfg_reg(I2C_SCL);
80                 omap_cfg_reg(I2C_SDA);
81         }
82
83         (void) platform_device_register(&omap_i2c_device1);
84 }
85
86 #else
87 static inline void omap_init_i2c(void) {}
88 #endif
89
90 /*-------------------------------------------------------------------------*/
91 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
92
93 static void omap_init_kp(void)
94 {
95         if (machine_is_omap_h2() || machine_is_omap_h3()) {
96                 omap_cfg_reg(F18_1610_KBC0);
97                 omap_cfg_reg(D20_1610_KBC1);
98                 omap_cfg_reg(D19_1610_KBC2);
99                 omap_cfg_reg(E18_1610_KBC3);
100                 omap_cfg_reg(C21_1610_KBC4);
101
102                 omap_cfg_reg(G18_1610_KBR0);
103                 omap_cfg_reg(F19_1610_KBR1);
104                 omap_cfg_reg(H14_1610_KBR2);
105                 omap_cfg_reg(E20_1610_KBR3);
106                 omap_cfg_reg(E19_1610_KBR4);
107                 omap_cfg_reg(N19_1610_KBR5);
108         } else if (machine_is_omap_perseus2()) {
109                 omap_cfg_reg(E2_730_KBR0);
110                 omap_cfg_reg(J7_730_KBR1);
111                 omap_cfg_reg(E1_730_KBR2);
112                 omap_cfg_reg(F3_730_KBR3);
113                 omap_cfg_reg(D2_730_KBR4);
114
115                 omap_cfg_reg(C2_730_KBC0);
116                 omap_cfg_reg(D3_730_KBC1);
117                 omap_cfg_reg(E4_730_KBC2);
118                 omap_cfg_reg(F4_730_KBC3);
119                 omap_cfg_reg(E3_730_KBC4);
120         } else if (machine_is_omap_h4()) {
121                 omap_cfg_reg(T19_24XX_KBR0);
122                 omap_cfg_reg(R19_24XX_KBR1);
123                 omap_cfg_reg(V18_24XX_KBR2);
124                 omap_cfg_reg(M21_24XX_KBR3);
125                 omap_cfg_reg(E5__24XX_KBR4);
126                 if (omap_has_menelaus()) {
127                         omap_cfg_reg(B3__24XX_KBR5);
128                         omap_cfg_reg(AA4_24XX_KBC2);
129                         omap_cfg_reg(B13_24XX_KBC6);
130                 } else {
131                         omap_cfg_reg(M18_24XX_KBR5);
132                         omap_cfg_reg(H19_24XX_KBC2);
133                         omap_cfg_reg(N19_24XX_KBC6);
134                 }
135                 omap_cfg_reg(R20_24XX_KBC0);
136                 omap_cfg_reg(M14_24XX_KBC1);
137                 omap_cfg_reg(V17_24XX_KBC3);
138                 omap_cfg_reg(P21_24XX_KBC4);
139                 omap_cfg_reg(L14_24XX_KBC5);
140         }
141 }
142 #else
143 static inline void omap_init_kp(void) {}
144 #endif
145
146 /*-------------------------------------------------------------------------*/
147
148 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
149
150 #ifdef CONFIG_ARCH_OMAP24XX
151 #define OMAP_MMC1_BASE          0x4809c000
152 #define OMAP_MMC1_INT           83
153 #else
154 #define OMAP_MMC1_BASE          0xfffb7800
155 #define OMAP_MMC1_INT           INT_MMC
156 #endif
157 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
158
159 static struct omap_mmc_conf mmc1_conf;
160
161 static u64 mmc1_dmamask = 0xffffffff;
162
163 static struct resource mmc1_resources[] = {
164         {
165                 .start          = IO_ADDRESS(OMAP_MMC1_BASE),
166                 .end            = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f,
167                 .flags          = IORESOURCE_MEM,
168         },
169         {
170                 .start          = OMAP_MMC1_INT,
171                 .flags          = IORESOURCE_IRQ,
172         },
173 };
174
175 static struct platform_device mmc_omap_device1 = {
176         .name           = "mmci-omap",
177         .id             = 1,
178         .dev = {
179                 .dma_mask       = &mmc1_dmamask,
180                 .platform_data  = &mmc1_conf,
181         },
182         .num_resources  = ARRAY_SIZE(mmc1_resources),
183         .resource       = mmc1_resources,
184 };
185
186 #ifdef  CONFIG_ARCH_OMAP16XX
187
188 static struct omap_mmc_conf mmc2_conf;
189
190 static u64 mmc2_dmamask = 0xffffffff;
191
192 static struct resource mmc2_resources[] = {
193         {
194                 .start          = IO_ADDRESS(OMAP_MMC2_BASE),
195                 .end            = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f,
196                 .flags          = IORESOURCE_MEM,
197         },
198         {
199                 .start          = INT_1610_MMC2,
200                 .flags          = IORESOURCE_IRQ,
201         },
202 };
203
204 static struct platform_device mmc_omap_device2 = {
205         .name           = "mmci-omap",
206         .id             = 2,
207         .dev = {
208                 .dma_mask       = &mmc2_dmamask,
209                 .platform_data  = &mmc2_conf,
210         },
211         .num_resources  = ARRAY_SIZE(mmc2_resources),
212         .resource       = mmc2_resources,
213 };
214 #endif
215
216 static void __init omap_init_mmc(void)
217 {
218         const struct omap_mmc_config    *mmc_conf;
219         const struct omap_mmc_conf      *mmc;
220
221         /* NOTE:  assumes MMC was never (wrongly) enabled */
222         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
223         if (!mmc_conf)
224                 return;
225
226         /* block 1 is always available and has just one pinout option */
227         mmc = &mmc_conf->mmc[0];
228         if (mmc->enabled) {
229                 if (!cpu_is_omap24xx()) {
230                         omap_cfg_reg(MMC_CMD);
231                         omap_cfg_reg(MMC_CLK);
232                         omap_cfg_reg(MMC_DAT0);
233                         if (cpu_is_omap1710()) {
234                                 omap_cfg_reg(M15_1710_MMC_CLKI);
235                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
236                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
237                         }
238                 }
239                 if (mmc->wire4) {
240                         if (!cpu_is_omap24xx()) {
241                                 omap_cfg_reg(MMC_DAT1);
242                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
243                                 if (!mmc->nomux)
244                                         omap_cfg_reg(MMC_DAT2);
245                                 omap_cfg_reg(MMC_DAT3);
246                         }
247                 }
248                 mmc1_conf = *mmc;
249                 (void) platform_device_register(&mmc_omap_device1);
250         }
251
252 #ifdef  CONFIG_ARCH_OMAP16XX
253         /* block 2 is on newer chips, and has many pinout options */
254         mmc = &mmc_conf->mmc[1];
255         if (mmc->enabled) {
256                 if (!mmc->nomux) {
257                         omap_cfg_reg(Y8_1610_MMC2_CMD);
258                         omap_cfg_reg(Y10_1610_MMC2_CLK);
259                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
260                         omap_cfg_reg(W8_1610_MMC2_DAT0);
261                         if (mmc->wire4) {
262                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
263                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
264                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
265                         }
266
267                         /* These are needed for the level shifter */
268                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
269                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
270                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
271                 }
272
273                 /* Feedback clock must be set on OMAP-1710 MMC2 */
274                 if (cpu_is_omap1710())
275                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
276                                      MOD_CONF_CTRL_1);
277                 mmc2_conf = *mmc;
278                 (void) platform_device_register(&mmc_omap_device2);
279         }
280 #endif
281         return;
282 }
283 #else
284 static inline void omap_init_mmc(void) {}
285 #endif
286
287 /*-------------------------------------------------------------------------*/
288
289 /* Numbering for the SPI-capable controllers when used for SPI:
290  * spi          = 1
291  * uwire        = 2
292  * mmc1..2      = 3..4
293  * mcbsp1..3    = 5..7
294  */
295
296 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
297
298 #define OMAP_UWIRE_BASE         0xfffb3000
299
300 static struct resource uwire_resources[] = {
301         {
302                 .start          = OMAP_UWIRE_BASE,
303                 .end            = OMAP_UWIRE_BASE + 0x20,
304                 .flags          = IORESOURCE_MEM,
305         },
306 };
307
308 static struct platform_device omap_uwire_device = {
309         .name      = "omap_uwire",
310         .id          = -1,
311         .num_resources  = ARRAY_SIZE(uwire_resources),
312         .resource       = uwire_resources,
313 };
314
315 static void omap_init_uwire(void)
316 {
317         /* FIXME define and use a boot tag; not all boards will be hooking
318          * up devices to the microwire controller, and multi-board configs
319          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
320          */
321
322         /* board-specific code must configure chipselects (only a few
323          * are normally used) and SCLK/SDI/SDO (each has two choices).
324          */
325         (void) platform_device_register(&omap_uwire_device);
326 }
327 #else
328 static inline void omap_init_uwire(void) {}
329 #endif
330
331 /*-------------------------------------------------------------------------*/
332
333 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
334
335 #ifdef CONFIG_ARCH_OMAP24XX
336 #define OMAP_WDT_BASE           0x48022000
337 #else
338 #define OMAP_WDT_BASE           0xfffeb000
339 #endif
340
341 static struct resource wdt_resources[] = {
342         {
343                 .start          = OMAP_WDT_BASE,
344                 .end            = OMAP_WDT_BASE + 0x4f,
345                 .flags          = IORESOURCE_MEM,
346         },
347 };
348
349 static struct platform_device omap_wdt_device = {
350         .name      = "omap_wdt",
351         .id          = -1,
352         .num_resources  = ARRAY_SIZE(wdt_resources),
353         .resource       = wdt_resources,
354 };
355
356 static void omap_init_wdt(void)
357 {
358         (void) platform_device_register(&omap_wdt_device);
359 }
360 #else
361 static inline void omap_init_wdt(void) {}
362 #endif
363
364 /*-------------------------------------------------------------------------*/
365
366 #if     defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE)
367
368 #ifdef CONFIG_ARCH_OMAP24XX
369 #define OMAP_RNG_BASE           0x480A0000
370 #else
371 #define OMAP_RNG_BASE           0xfffe5000
372 #endif
373
374 static struct resource rng_resources[] = {
375         {
376                 .start          = OMAP_RNG_BASE,
377                 .end            = OMAP_RNG_BASE + 0x4f,
378                 .flags          = IORESOURCE_MEM,
379         },
380 };
381
382 static struct platform_device omap_rng_device = {
383         .name      = "omap_rng",
384         .id          = -1,
385         .num_resources  = ARRAY_SIZE(rng_resources),
386         .resource       = rng_resources,
387 };
388
389 static void omap_init_rng(void)
390 {
391         (void) platform_device_register(&omap_rng_device);
392 }
393 #else
394 static inline void omap_init_rng(void) {}
395 #endif
396
397 /*
398  * This gets called after board-specific INIT_MACHINE, and initializes most
399  * on-chip peripherals accessible on this board (except for few like USB):
400  *
401  *  (a) Does any "standard config" pin muxing needed.  Board-specific
402  *      code will have muxed GPIO pins and done "nonstandard" setup;
403  *      that code could live in the boot loader.
404  *  (b) Populating board-specific platform_data with the data drivers
405  *      rely on to handle wiring variations.
406  *  (c) Creating platform devices as meaningful on this board and
407  *      with this kernel configuration.
408  *
409  * Claiming GPIOs, and setting their direction and initial values, is the
410  * responsibility of the device drivers.  So is responding to probe().
411  *
412  * Board-specific knowlege like creating devices or pin setup is to be
413  * kept out of drivers as much as possible.  In particular, pin setup
414  * may be handled by the boot loader, and drivers should expect it will
415  * normally have been done by the time they're probed.
416  */
417 static int __init omap_init_devices(void)
418 {
419         /* please keep these calls, and their implementations above,
420          * in alphabetical order so they're easier to sort through.
421          */
422         omap_init_i2c();
423         omap_init_kp();
424         omap_init_mmc();
425         omap_init_uwire();
426         omap_init_wdt();
427         omap_init_rng();
428
429         return 0;
430 }
431 arch_initcall(omap_init_devices);
432