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1a8bfa1e TL |
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 | ||
28 | ||
29 | void omap_nop_release(struct device *dev) | |
30 | { | |
31 | /* Nothing */ | |
32 | } | |
33 | ||
34 | /*-------------------------------------------------------------------------*/ | |
35 | ||
36 | #if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) | |
37 | ||
38 | #define OMAP1_I2C_BASE 0xfffb3800 | |
39 | #define OMAP2_I2C_BASE1 0x48070000 | |
40 | #define OMAP_I2C_SIZE 0x3f | |
41 | #define OMAP1_I2C_INT INT_I2C | |
42 | #define OMAP2_I2C_INT1 56 | |
43 | ||
44 | static struct resource i2c_resources1[] = { | |
45 | { | |
46 | .start = 0, | |
47 | .end = 0, | |
48 | .flags = IORESOURCE_MEM, | |
49 | }, | |
50 | { | |
51 | .start = 0, | |
52 | .flags = IORESOURCE_IRQ, | |
53 | }, | |
54 | }; | |
55 | ||
56 | /* DMA not used; works around erratum writing to non-empty i2c fifo */ | |
57 | ||
58 | static struct platform_device omap_i2c_device1 = { | |
59 | .name = "i2c_omap", | |
60 | .id = 1, | |
61 | .dev = { | |
62 | .release = omap_nop_release, | |
63 | }, | |
64 | .num_resources = ARRAY_SIZE(i2c_resources1), | |
65 | .resource = i2c_resources1, | |
66 | }; | |
67 | ||
68 | /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */ | |
69 | static void omap_init_i2c(void) | |
70 | { | |
71 | if (cpu_is_omap24xx()) { | |
72 | i2c_resources1[0].start = OMAP2_I2C_BASE1; | |
73 | i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE; | |
74 | i2c_resources1[1].start = OMAP2_I2C_INT1; | |
75 | } else { | |
76 | i2c_resources1[0].start = OMAP1_I2C_BASE; | |
77 | i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE; | |
78 | i2c_resources1[1].start = OMAP1_I2C_INT; | |
79 | } | |
80 | ||
81 | /* FIXME define and use a boot tag, in case of boards that | |
82 | * either don't wire up I2C, or chips that mux it differently... | |
83 | * it can include clocking and address info, maybe more. | |
84 | */ | |
85 | if (cpu_is_omap24xx()) { | |
86 | omap_cfg_reg(M19_24XX_I2C1_SCL); | |
87 | omap_cfg_reg(L15_24XX_I2C1_SDA); | |
88 | } else { | |
89 | omap_cfg_reg(I2C_SCL); | |
90 | omap_cfg_reg(I2C_SDA); | |
91 | } | |
92 | ||
93 | (void) platform_device_register(&omap_i2c_device1); | |
94 | } | |
95 | ||
96 | #else | |
97 | static inline void omap_init_i2c(void) {} | |
98 | #endif | |
99 | ||
100 | /*-------------------------------------------------------------------------*/ | |
101 | ||
102 | #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) | |
103 | ||
104 | #ifdef CONFIG_ARCH_OMAP24XX | |
105 | #define OMAP_MMC1_BASE 0x4809c000 | |
106 | #define OMAP_MMC1_INT 83 | |
107 | #else | |
108 | #define OMAP_MMC1_BASE 0xfffb7800 | |
109 | #define OMAP_MMC1_INT INT_MMC | |
110 | #endif | |
111 | #define OMAP_MMC2_BASE 0xfffb7c00 /* omap16xx only */ | |
112 | ||
113 | static struct omap_mmc_conf mmc1_conf; | |
114 | ||
115 | static u64 mmc1_dmamask = 0xffffffff; | |
116 | ||
117 | static struct resource mmc1_resources[] = { | |
118 | { | |
119 | .start = IO_ADDRESS(OMAP_MMC1_BASE), | |
120 | .end = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f, | |
121 | .flags = IORESOURCE_MEM, | |
122 | }, | |
123 | { | |
124 | .start = OMAP_MMC1_INT, | |
125 | .flags = IORESOURCE_IRQ, | |
126 | }, | |
127 | }; | |
128 | ||
129 | static struct platform_device mmc_omap_device1 = { | |
130 | .name = "mmci-omap", | |
131 | .id = 1, | |
132 | .dev = { | |
133 | .release = omap_nop_release, | |
134 | .dma_mask = &mmc1_dmamask, | |
135 | .platform_data = &mmc1_conf, | |
136 | }, | |
137 | .num_resources = ARRAY_SIZE(mmc1_resources), | |
138 | .resource = mmc1_resources, | |
139 | }; | |
140 | ||
141 | #ifdef CONFIG_ARCH_OMAP16XX | |
142 | ||
143 | static struct omap_mmc_conf mmc2_conf; | |
144 | ||
145 | static u64 mmc2_dmamask = 0xffffffff; | |
146 | ||
147 | static struct resource mmc2_resources[] = { | |
148 | { | |
149 | .start = IO_ADDRESS(OMAP_MMC2_BASE), | |
150 | .end = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f, | |
151 | .flags = IORESOURCE_MEM, | |
152 | }, | |
153 | { | |
154 | .start = INT_1610_MMC2, | |
155 | .flags = IORESOURCE_IRQ, | |
156 | }, | |
157 | }; | |
158 | ||
159 | static struct platform_device mmc_omap_device2 = { | |
160 | .name = "mmci-omap", | |
161 | .id = 2, | |
162 | .dev = { | |
163 | .release = omap_nop_release, | |
164 | .dma_mask = &mmc2_dmamask, | |
165 | .platform_data = &mmc2_conf, | |
166 | }, | |
167 | .num_resources = ARRAY_SIZE(mmc2_resources), | |
168 | .resource = mmc2_resources, | |
169 | }; | |
170 | #endif | |
171 | ||
172 | static void __init omap_init_mmc(void) | |
173 | { | |
174 | const struct omap_mmc_config *mmc_conf; | |
175 | const struct omap_mmc_conf *mmc; | |
176 | ||
177 | /* NOTE: assumes MMC was never (wrongly) enabled */ | |
178 | mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config); | |
179 | if (!mmc_conf) | |
180 | return; | |
181 | ||
182 | /* block 1 is always available and has just one pinout option */ | |
183 | mmc = &mmc_conf->mmc[0]; | |
184 | if (mmc->enabled) { | |
185 | if (!cpu_is_omap24xx()) { | |
186 | omap_cfg_reg(MMC_CMD); | |
187 | omap_cfg_reg(MMC_CLK); | |
188 | omap_cfg_reg(MMC_DAT0); | |
189 | if (cpu_is_omap1710()) { | |
190 | omap_cfg_reg(M15_1710_MMC_CLKI); | |
191 | omap_cfg_reg(P19_1710_MMC_CMDDIR); | |
192 | omap_cfg_reg(P20_1710_MMC_DATDIR0); | |
193 | } | |
194 | } | |
195 | if (mmc->wire4) { | |
196 | if (!cpu_is_omap24xx()) { | |
197 | omap_cfg_reg(MMC_DAT1); | |
198 | /* NOTE: DAT2 can be on W10 (here) or M15 */ | |
199 | if (!mmc->nomux) | |
200 | omap_cfg_reg(MMC_DAT2); | |
201 | omap_cfg_reg(MMC_DAT3); | |
202 | } | |
203 | } | |
204 | mmc1_conf = *mmc; | |
205 | (void) platform_device_register(&mmc_omap_device1); | |
206 | } | |
207 | ||
208 | #ifdef CONFIG_ARCH_OMAP16XX | |
209 | /* block 2 is on newer chips, and has many pinout options */ | |
210 | mmc = &mmc_conf->mmc[1]; | |
211 | if (mmc->enabled) { | |
212 | if (!mmc->nomux) { | |
213 | omap_cfg_reg(Y8_1610_MMC2_CMD); | |
214 | omap_cfg_reg(Y10_1610_MMC2_CLK); | |
215 | omap_cfg_reg(R18_1610_MMC2_CLKIN); | |
216 | omap_cfg_reg(W8_1610_MMC2_DAT0); | |
217 | if (mmc->wire4) { | |
218 | omap_cfg_reg(V8_1610_MMC2_DAT1); | |
219 | omap_cfg_reg(W15_1610_MMC2_DAT2); | |
220 | omap_cfg_reg(R10_1610_MMC2_DAT3); | |
221 | } | |
222 | ||
223 | /* These are needed for the level shifter */ | |
224 | omap_cfg_reg(V9_1610_MMC2_CMDDIR); | |
225 | omap_cfg_reg(V5_1610_MMC2_DATDIR0); | |
226 | omap_cfg_reg(W19_1610_MMC2_DATDIR1); | |
227 | } | |
228 | ||
229 | /* Feedback clock must be set on OMAP-1710 MMC2 */ | |
230 | if (cpu_is_omap1710()) | |
231 | omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), | |
232 | MOD_CONF_CTRL_1); | |
233 | mmc2_conf = *mmc; | |
234 | (void) platform_device_register(&mmc_omap_device2); | |
235 | } | |
236 | #endif | |
237 | return; | |
238 | } | |
239 | #else | |
240 | static inline void omap_init_mmc(void) {} | |
241 | #endif | |
242 | ||
243 | #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) | |
244 | ||
245 | #ifdef CONFIG_ARCH_OMAP24XX | |
246 | #define OMAP_WDT_BASE 0x48022000 | |
247 | #else | |
248 | #define OMAP_WDT_BASE 0xfffeb000 | |
249 | #endif | |
250 | ||
251 | static struct resource wdt_resources[] = { | |
252 | { | |
253 | .start = OMAP_WDT_BASE, | |
254 | .end = OMAP_WDT_BASE + 0x4f, | |
255 | .flags = IORESOURCE_MEM, | |
256 | }, | |
257 | }; | |
258 | ||
259 | static struct platform_device omap_wdt_device = { | |
260 | .name = "omap_wdt", | |
261 | .id = -1, | |
262 | .dev = { | |
263 | .release = omap_nop_release, | |
264 | }, | |
265 | .num_resources = ARRAY_SIZE(wdt_resources), | |
266 | .resource = wdt_resources, | |
267 | }; | |
268 | ||
269 | static void omap_init_wdt(void) | |
270 | { | |
271 | (void) platform_device_register(&omap_wdt_device); | |
272 | } | |
273 | #else | |
274 | static inline void omap_init_wdt(void) {} | |
275 | #endif | |
276 | ||
277 | /*-------------------------------------------------------------------------*/ | |
278 | ||
279 | #if defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE) | |
280 | ||
281 | #ifdef CONFIG_ARCH_OMAP24XX | |
282 | #define OMAP_RNG_BASE 0x480A0000 | |
283 | #else | |
284 | #define OMAP_RNG_BASE 0xfffe5000 | |
285 | #endif | |
286 | ||
287 | static struct resource rng_resources[] = { | |
288 | { | |
289 | .start = OMAP_RNG_BASE, | |
290 | .end = OMAP_RNG_BASE + 0x4f, | |
291 | .flags = IORESOURCE_MEM, | |
292 | }, | |
293 | }; | |
294 | ||
295 | static struct platform_device omap_rng_device = { | |
296 | .name = "omap_rng", | |
297 | .id = -1, | |
298 | .dev = { | |
299 | .release = omap_nop_release, | |
300 | }, | |
301 | .num_resources = ARRAY_SIZE(rng_resources), | |
302 | .resource = rng_resources, | |
303 | }; | |
304 | ||
305 | static void omap_init_rng(void) | |
306 | { | |
307 | (void) platform_device_register(&omap_rng_device); | |
308 | } | |
309 | #else | |
310 | static inline void omap_init_rng(void) {} | |
311 | #endif | |
312 | ||
313 | #if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE) | |
314 | ||
315 | static struct omap_lcd_config omap_fb_conf; | |
316 | ||
317 | static u64 omap_fb_dma_mask = ~(u32)0; | |
318 | ||
319 | static struct platform_device omap_fb_device = { | |
320 | .name = "omapfb", | |
321 | .id = -1, | |
322 | .dev = { | |
323 | .release = omap_nop_release, | |
324 | .dma_mask = &omap_fb_dma_mask, | |
325 | .coherent_dma_mask = ~(u32)0, | |
326 | .platform_data = &omap_fb_conf, | |
327 | }, | |
328 | .num_resources = 0, | |
329 | }; | |
330 | ||
331 | static inline void omap_init_fb(void) | |
332 | { | |
333 | const struct omap_lcd_config *conf; | |
334 | ||
335 | conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config); | |
336 | if (conf != NULL) | |
337 | omap_fb_conf = *conf; | |
338 | platform_device_register(&omap_fb_device); | |
339 | } | |
340 | ||
341 | #else | |
342 | ||
343 | static inline void omap_init_fb(void) {} | |
344 | ||
345 | #endif | |
346 | ||
347 | /* | |
348 | * This gets called after board-specific INIT_MACHINE, and initializes most | |
349 | * on-chip peripherals accessible on this board (except for few like USB): | |
350 | * | |
351 | * (a) Does any "standard config" pin muxing needed. Board-specific | |
352 | * code will have muxed GPIO pins and done "nonstandard" setup; | |
353 | * that code could live in the boot loader. | |
354 | * (b) Populating board-specific platform_data with the data drivers | |
355 | * rely on to handle wiring variations. | |
356 | * (c) Creating platform devices as meaningful on this board and | |
357 | * with this kernel configuration. | |
358 | * | |
359 | * Claiming GPIOs, and setting their direction and initial values, is the | |
360 | * responsibility of the device drivers. So is responding to probe(). | |
361 | * | |
362 | * Board-specific knowlege like creating devices or pin setup is to be | |
363 | * kept out of drivers as much as possible. In particular, pin setup | |
364 | * may be handled by the boot loader, and drivers should expect it will | |
365 | * normally have been done by the time they're probed. | |
366 | */ | |
367 | static int __init omap_init_devices(void) | |
368 | { | |
369 | /* please keep these calls, and their implementations above, | |
370 | * in alphabetical order so they're easier to sort through. | |
371 | */ | |
372 | omap_init_fb(); | |
373 | omap_init_i2c(); | |
374 | omap_init_mmc(); | |
375 | omap_init_wdt(); | |
376 | omap_init_rng(); | |
377 | ||
378 | return 0; | |
379 | } | |
380 | arch_initcall(omap_init_devices); | |
381 |