Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...
[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/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 #include <asm/arch/menelaus.h>
27
28 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
29
30 #define OMAP1_I2C_BASE          0xfffb3800
31 #define OMAP2_I2C_BASE1         0x48070000
32 #define OMAP_I2C_SIZE           0x3f
33 #define OMAP1_I2C_INT           INT_I2C
34 #define OMAP2_I2C_INT1          56
35
36 static struct resource i2c_resources1[] = {
37         {
38                 .start          = 0,
39                 .end            = 0,
40                 .flags          = IORESOURCE_MEM,
41         },
42         {
43                 .start          = 0,
44                 .flags          = IORESOURCE_IRQ,
45         },
46 };
47
48 /* DMA not used; works around erratum writing to non-empty i2c fifo */
49
50 static struct platform_device omap_i2c_device1 = {
51         .name           = "i2c_omap",
52         .id             = 1,
53         .num_resources  = ARRAY_SIZE(i2c_resources1),
54         .resource       = i2c_resources1,
55 };
56
57 /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
58 static void omap_init_i2c(void)
59 {
60         if (cpu_is_omap24xx()) {
61                 i2c_resources1[0].start = OMAP2_I2C_BASE1;
62                 i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
63                 i2c_resources1[1].start = OMAP2_I2C_INT1;
64         } else {
65                 i2c_resources1[0].start = OMAP1_I2C_BASE;
66                 i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
67                 i2c_resources1[1].start = OMAP1_I2C_INT;
68         }
69
70         /* FIXME define and use a boot tag, in case of boards that
71          * either don't wire up I2C, or chips that mux it differently...
72          * it can include clocking and address info, maybe more.
73          */
74         if (cpu_is_omap24xx()) {
75                 omap_cfg_reg(M19_24XX_I2C1_SCL);
76                 omap_cfg_reg(L15_24XX_I2C1_SDA);
77         } else {
78                 omap_cfg_reg(I2C_SCL);
79                 omap_cfg_reg(I2C_SDA);
80         }
81
82         (void) platform_device_register(&omap_i2c_device1);
83 }
84
85 #else
86 static inline void omap_init_i2c(void) {}
87 #endif
88
89 /*-------------------------------------------------------------------------*/
90 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
91
92 static void omap_init_kp(void)
93 {
94         if (machine_is_omap_h2() || machine_is_omap_h3()) {
95                 omap_cfg_reg(F18_1610_KBC0);
96                 omap_cfg_reg(D20_1610_KBC1);
97                 omap_cfg_reg(D19_1610_KBC2);
98                 omap_cfg_reg(E18_1610_KBC3);
99                 omap_cfg_reg(C21_1610_KBC4);
100
101                 omap_cfg_reg(G18_1610_KBR0);
102                 omap_cfg_reg(F19_1610_KBR1);
103                 omap_cfg_reg(H14_1610_KBR2);
104                 omap_cfg_reg(E20_1610_KBR3);
105                 omap_cfg_reg(E19_1610_KBR4);
106                 omap_cfg_reg(N19_1610_KBR5);
107         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
108                 omap_cfg_reg(E2_730_KBR0);
109                 omap_cfg_reg(J7_730_KBR1);
110                 omap_cfg_reg(E1_730_KBR2);
111                 omap_cfg_reg(F3_730_KBR3);
112                 omap_cfg_reg(D2_730_KBR4);
113
114                 omap_cfg_reg(C2_730_KBC0);
115                 omap_cfg_reg(D3_730_KBC1);
116                 omap_cfg_reg(E4_730_KBC2);
117                 omap_cfg_reg(F4_730_KBC3);
118                 omap_cfg_reg(E3_730_KBC4);
119         } else if (machine_is_omap_h4()) {
120                 omap_cfg_reg(T19_24XX_KBR0);
121                 omap_cfg_reg(R19_24XX_KBR1);
122                 omap_cfg_reg(V18_24XX_KBR2);
123                 omap_cfg_reg(M21_24XX_KBR3);
124                 omap_cfg_reg(E5__24XX_KBR4);
125                 if (omap_has_menelaus()) {
126                         omap_cfg_reg(B3__24XX_KBR5);
127                         omap_cfg_reg(AA4_24XX_KBC2);
128                         omap_cfg_reg(B13_24XX_KBC6);
129                 } else {
130                         omap_cfg_reg(M18_24XX_KBR5);
131                         omap_cfg_reg(H19_24XX_KBC2);
132                         omap_cfg_reg(N19_24XX_KBC6);
133                 }
134                 omap_cfg_reg(R20_24XX_KBC0);
135                 omap_cfg_reg(M14_24XX_KBC1);
136                 omap_cfg_reg(V17_24XX_KBC3);
137                 omap_cfg_reg(P21_24XX_KBC4);
138                 omap_cfg_reg(L14_24XX_KBC5);
139         }
140 }
141 #else
142 static inline void omap_init_kp(void) {}
143 #endif
144
145 /*-------------------------------------------------------------------------*/
146
147 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
148
149 #ifdef CONFIG_ARCH_OMAP24XX
150 #define OMAP_MMC1_BASE          0x4809c000
151 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
152 #else
153 #define OMAP_MMC1_BASE          0xfffb7800
154 #define OMAP_MMC1_INT           INT_MMC
155 #endif
156 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
157
158 static struct omap_mmc_conf mmc1_conf;
159
160 static u64 mmc1_dmamask = 0xffffffff;
161
162 static struct resource mmc1_resources[] = {
163         {
164                 .start          = OMAP_MMC1_BASE,
165                 .end            = OMAP_MMC1_BASE + 0x7f,
166                 .flags          = IORESOURCE_MEM,
167         },
168         {
169                 .start          = OMAP_MMC1_INT,
170                 .flags          = IORESOURCE_IRQ,
171         },
172 };
173
174 static struct platform_device mmc_omap_device1 = {
175         .name           = "mmci-omap",
176         .id             = 1,
177         .dev = {
178                 .dma_mask       = &mmc1_dmamask,
179                 .platform_data  = &mmc1_conf,
180         },
181         .num_resources  = ARRAY_SIZE(mmc1_resources),
182         .resource       = mmc1_resources,
183 };
184
185 #ifdef  CONFIG_ARCH_OMAP16XX
186
187 static struct omap_mmc_conf mmc2_conf;
188
189 static u64 mmc2_dmamask = 0xffffffff;
190
191 static struct resource mmc2_resources[] = {
192         {
193                 .start          = OMAP_MMC2_BASE,
194                 .end            = OMAP_MMC2_BASE + 0x7f,
195                 .flags          = IORESOURCE_MEM,
196         },
197         {
198                 .start          = INT_1610_MMC2,
199                 .flags          = IORESOURCE_IRQ,
200         },
201 };
202
203 static struct platform_device mmc_omap_device2 = {
204         .name           = "mmci-omap",
205         .id             = 2,
206         .dev = {
207                 .dma_mask       = &mmc2_dmamask,
208                 .platform_data  = &mmc2_conf,
209         },
210         .num_resources  = ARRAY_SIZE(mmc2_resources),
211         .resource       = mmc2_resources,
212 };
213 #endif
214
215 static void __init omap_init_mmc(void)
216 {
217         const struct omap_mmc_config    *mmc_conf;
218         const struct omap_mmc_conf      *mmc;
219
220         /* NOTE:  assumes MMC was never (wrongly) enabled */
221         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
222         if (!mmc_conf)
223                 return;
224
225         /* block 1 is always available and has just one pinout option */
226         mmc = &mmc_conf->mmc[0];
227         if (mmc->enabled) {
228                 if (cpu_is_omap24xx()) {
229                         omap_cfg_reg(H18_24XX_MMC_CMD);
230                         omap_cfg_reg(H15_24XX_MMC_CLKI);
231                         omap_cfg_reg(G19_24XX_MMC_CLKO);
232                         omap_cfg_reg(F20_24XX_MMC_DAT0);
233                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
234                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
235                 } else {
236                         omap_cfg_reg(MMC_CMD);
237                         omap_cfg_reg(MMC_CLK);
238                         omap_cfg_reg(MMC_DAT0);
239                         if (cpu_is_omap1710()) {
240                                 omap_cfg_reg(M15_1710_MMC_CLKI);
241                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
242                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
243                         }
244                 }
245                 if (mmc->wire4) {
246                         if (cpu_is_omap24xx()) {
247                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
248                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
249                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
250                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
251                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
252                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
253                         } else {
254                                 omap_cfg_reg(MMC_DAT1);
255                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
256                                 if (!mmc->nomux)
257                                         omap_cfg_reg(MMC_DAT2);
258                                 omap_cfg_reg(MMC_DAT3);
259                         }
260                 }
261                 mmc1_conf = *mmc;
262                 (void) platform_device_register(&mmc_omap_device1);
263         }
264
265 #ifdef  CONFIG_ARCH_OMAP16XX
266         /* block 2 is on newer chips, and has many pinout options */
267         mmc = &mmc_conf->mmc[1];
268         if (mmc->enabled) {
269                 if (!mmc->nomux) {
270                         omap_cfg_reg(Y8_1610_MMC2_CMD);
271                         omap_cfg_reg(Y10_1610_MMC2_CLK);
272                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
273                         omap_cfg_reg(W8_1610_MMC2_DAT0);
274                         if (mmc->wire4) {
275                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
276                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
277                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
278                         }
279
280                         /* These are needed for the level shifter */
281                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
282                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
283                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
284                 }
285
286                 /* Feedback clock must be set on OMAP-1710 MMC2 */
287                 if (cpu_is_omap1710())
288                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
289                                      MOD_CONF_CTRL_1);
290                 mmc2_conf = *mmc;
291                 (void) platform_device_register(&mmc_omap_device2);
292         }
293 #endif
294         return;
295 }
296 #else
297 static inline void omap_init_mmc(void) {}
298 #endif
299
300 /*-------------------------------------------------------------------------*/
301
302 /* Numbering for the SPI-capable controllers when used for SPI:
303  * spi          = 1
304  * uwire        = 2
305  * mmc1..2      = 3..4
306  * mcbsp1..3    = 5..7
307  */
308
309 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
310
311 #define OMAP_UWIRE_BASE         0xfffb3000
312
313 static struct resource uwire_resources[] = {
314         {
315                 .start          = OMAP_UWIRE_BASE,
316                 .end            = OMAP_UWIRE_BASE + 0x20,
317                 .flags          = IORESOURCE_MEM,
318         },
319 };
320
321 static struct platform_device omap_uwire_device = {
322         .name      = "omap_uwire",
323         .id          = -1,
324         .num_resources  = ARRAY_SIZE(uwire_resources),
325         .resource       = uwire_resources,
326 };
327
328 static void omap_init_uwire(void)
329 {
330         /* FIXME define and use a boot tag; not all boards will be hooking
331          * up devices to the microwire controller, and multi-board configs
332          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
333          */
334
335         /* board-specific code must configure chipselects (only a few
336          * are normally used) and SCLK/SDI/SDO (each has two choices).
337          */
338         (void) platform_device_register(&omap_uwire_device);
339 }
340 #else
341 static inline void omap_init_uwire(void) {}
342 #endif
343
344 /*-------------------------------------------------------------------------*/
345
346 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
347
348 #ifdef CONFIG_ARCH_OMAP24XX
349 #define OMAP_WDT_BASE           0x48022000
350 #else
351 #define OMAP_WDT_BASE           0xfffeb000
352 #endif
353
354 static struct resource wdt_resources[] = {
355         {
356                 .start          = OMAP_WDT_BASE,
357                 .end            = OMAP_WDT_BASE + 0x4f,
358                 .flags          = IORESOURCE_MEM,
359         },
360 };
361
362 static struct platform_device omap_wdt_device = {
363         .name      = "omap_wdt",
364         .id          = -1,
365         .num_resources  = ARRAY_SIZE(wdt_resources),
366         .resource       = wdt_resources,
367 };
368
369 static void omap_init_wdt(void)
370 {
371         (void) platform_device_register(&omap_wdt_device);
372 }
373 #else
374 static inline void omap_init_wdt(void) {}
375 #endif
376
377 /*-------------------------------------------------------------------------*/
378
379 #if     defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE)
380
381 #ifdef CONFIG_ARCH_OMAP24XX
382 #define OMAP_RNG_BASE           0x480A0000
383 #else
384 #define OMAP_RNG_BASE           0xfffe5000
385 #endif
386
387 static struct resource rng_resources[] = {
388         {
389                 .start          = OMAP_RNG_BASE,
390                 .end            = OMAP_RNG_BASE + 0x4f,
391                 .flags          = IORESOURCE_MEM,
392         },
393 };
394
395 static struct platform_device omap_rng_device = {
396         .name      = "omap_rng",
397         .id          = -1,
398         .num_resources  = ARRAY_SIZE(rng_resources),
399         .resource       = rng_resources,
400 };
401
402 static void omap_init_rng(void)
403 {
404         (void) platform_device_register(&omap_rng_device);
405 }
406 #else
407 static inline void omap_init_rng(void) {}
408 #endif
409
410 /*
411  * This gets called after board-specific INIT_MACHINE, and initializes most
412  * on-chip peripherals accessible on this board (except for few like USB):
413  *
414  *  (a) Does any "standard config" pin muxing needed.  Board-specific
415  *      code will have muxed GPIO pins and done "nonstandard" setup;
416  *      that code could live in the boot loader.
417  *  (b) Populating board-specific platform_data with the data drivers
418  *      rely on to handle wiring variations.
419  *  (c) Creating platform devices as meaningful on this board and
420  *      with this kernel configuration.
421  *
422  * Claiming GPIOs, and setting their direction and initial values, is the
423  * responsibility of the device drivers.  So is responding to probe().
424  *
425  * Board-specific knowlege like creating devices or pin setup is to be
426  * kept out of drivers as much as possible.  In particular, pin setup
427  * may be handled by the boot loader, and drivers should expect it will
428  * normally have been done by the time they're probed.
429  */
430 static int __init omap_init_devices(void)
431 {
432 /*
433  * Need to enable relevant once for 2430 SDP
434  */
435 #ifndef CONFIG_MACH_OMAP_2430SDP
436         /* please keep these calls, and their implementations above,
437          * in alphabetical order so they're easier to sort through.
438          */
439         omap_init_i2c();
440         omap_init_kp();
441         omap_init_mmc();
442         omap_init_uwire();
443         omap_init_wdt();
444         omap_init_rng();
445 #endif
446         return 0;
447 }
448 arch_initcall(omap_init_devices);
449