aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/plat-omap/devices.c
blob: dbc3f44e07a603f8b891c2901e1223a846dc34f1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
/*
 * linux/arch/arm/plat-omap/devices.c
 *
 * Common platform device setup/initialization for OMAP1 and OMAP2
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>

#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>

#include <asm/arch/tc.h>
#include <asm/arch/board.h>
#include <asm/arch/mux.h>
#include <asm/arch/gpio.h>
#include <asm/arch/menelaus.h>

#if 	defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)

#define	OMAP1_I2C_BASE		0xfffb3800
#define OMAP2_I2C_BASE1		0x48070000
#define OMAP_I2C_SIZE		0x3f
#define OMAP1_I2C_INT		INT_I2C
#define OMAP2_I2C_INT1		56

static struct resource i2c_resources1[] = {
	{
		.start		= 0,
		.end		= 0,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= 0,
		.flags		= IORESOURCE_IRQ,
	},
};

/* DMA not used; works around erratum writing to non-empty i2c fifo */

static struct platform_device omap_i2c_device1 = {
        .name           = "i2c_omap",
        .id             = 1,
	.num_resources	= ARRAY_SIZE(i2c_resources1),
	.resource	= i2c_resources1,
};

/* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
static void omap_init_i2c(void)
{
	if (cpu_is_omap24xx()) {
		i2c_resources1[0].start = OMAP2_I2C_BASE1;
		i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
		i2c_resources1[1].start = OMAP2_I2C_INT1;
	} else {
		i2c_resources1[0].start = OMAP1_I2C_BASE;
		i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
		i2c_resources1[1].start = OMAP1_I2C_INT;
	}

	/* FIXME define and use a boot tag, in case of boards that
	 * either don't wire up I2C, or chips that mux it differently...
	 * it can include clocking and address info, maybe more.
	 */
	if (cpu_is_omap24xx()) {
		omap_cfg_reg(M19_24XX_I2C1_SCL);
		omap_cfg_reg(L15_24XX_I2C1_SDA);
	} else {
		omap_cfg_reg(I2C_SCL);
		omap_cfg_reg(I2C_SDA);
	}

	(void) platform_device_register(&omap_i2c_device1);
}

#else
static inline void omap_init_i2c(void) {}
#endif

/*-------------------------------------------------------------------------*/
#if	defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)

static void omap_init_kp(void)
{
	if (machine_is_omap_h2() || machine_is_omap_h3()) {
		omap_cfg_reg(F18_1610_KBC0);
		omap_cfg_reg(D20_1610_KBC1);
		omap_cfg_reg(D19_1610_KBC2);
		omap_cfg_reg(E18_1610_KBC3);
		omap_cfg_reg(C21_1610_KBC4);

		omap_cfg_reg(G18_1610_KBR0);
		omap_cfg_reg(F19_1610_KBR1);
		omap_cfg_reg(H14_1610_KBR2);
		omap_cfg_reg(E20_1610_KBR3);
		omap_cfg_reg(E19_1610_KBR4);
		omap_cfg_reg(N19_1610_KBR5);
	} else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
		omap_cfg_reg(E2_730_KBR0);
		omap_cfg_reg(J7_730_KBR1);
		omap_cfg_reg(E1_730_KBR2);
		omap_cfg_reg(F3_730_KBR3);
		omap_cfg_reg(D2_730_KBR4);

		omap_cfg_reg(C2_730_KBC0);
		omap_cfg_reg(D3_730_KBC1);
		omap_cfg_reg(E4_730_KBC2);
		omap_cfg_reg(F4_730_KBC3);
		omap_cfg_reg(E3_730_KBC4);
	} else if (machine_is_omap_h4()) {
		omap_cfg_reg(T19_24XX_KBR0);
		omap_cfg_reg(R19_24XX_KBR1);
		omap_cfg_reg(V18_24XX_KBR2);
		omap_cfg_reg(M21_24XX_KBR3);
		omap_cfg_reg(E5__24XX_KBR4);
		if (omap_has_menelaus()) {
			omap_cfg_reg(B3__24XX_KBR5);
			omap_cfg_reg(AA4_24XX_KBC2);
			omap_cfg_reg(B13_24XX_KBC6);
		} else {
			omap_cfg_reg(M18_24XX_KBR5);
			omap_cfg_reg(H19_24XX_KBC2);
			omap_cfg_reg(N19_24XX_KBC6);
		}
		omap_cfg_reg(R20_24XX_KBC0);
		omap_cfg_reg(M14_24XX_KBC1);
		omap_cfg_reg(V17_24XX_KBC3);
		omap_cfg_reg(P21_24XX_KBC4);
		omap_cfg_reg(L14_24XX_KBC5);
	}
}
#else
static inline void omap_init_kp(void) {}
#endif

/*-------------------------------------------------------------------------*/

#if	defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)

#ifdef CONFIG_ARCH_OMAP24XX
#define	OMAP_MMC1_BASE		0x4809c000
#define OMAP_MMC1_INT		INT_24XX_MMC_IRQ
#else
#define	OMAP_MMC1_BASE		0xfffb7800
#define OMAP_MMC1_INT		INT_MMC
#endif
#define	OMAP_MMC2_BASE		0xfffb7c00	/* omap16xx only */

static struct omap_mmc_conf mmc1_conf;

static u64 mmc1_dmamask = 0xffffffff;

static struct resource mmc1_resources[] = {
	{
		.start		= OMAP_MMC1_BASE,
		.end		= OMAP_MMC1_BASE + 0x7f,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= OMAP_MMC1_INT,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device mmc_omap_device1 = {
	.name		= "mmci-omap",
	.id		= 1,
	.dev = {
		.dma_mask	= &mmc1_dmamask,
		.platform_data	= &mmc1_conf,
	},
	.num_resources	= ARRAY_SIZE(mmc1_resources),
	.resource	= mmc1_resources,
};

#ifdef	CONFIG_ARCH_OMAP16XX

static struct omap_mmc_conf mmc2_conf;

static u64 mmc2_dmamask = 0xffffffff;

static struct resource mmc2_resources[] = {
	{
		.start		= OMAP_MMC2_BASE,
		.end		= OMAP_MMC2_BASE + 0x7f,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= INT_1610_MMC2,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device mmc_omap_device2 = {
	.name		= "mmci-omap",
	.id		= 2,
	.dev = {
		.dma_mask	= &mmc2_dmamask,
		.platform_data	= &mmc2_conf,
	},
	.num_resources	= ARRAY_SIZE(mmc2_resources),
	.resource	= mmc2_resources,
};
#endif

static void __init omap_init_mmc(void)
{
	const struct omap_mmc_config	*mmc_conf;
	const struct omap_mmc_conf	*mmc;

	/* NOTE:  assumes MMC was never (wrongly) enabled */
	mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
	if (!mmc_conf)
		return;

	/* block 1 is always available and has just one pinout option */
	mmc = &mmc_conf->mmc[0];
	if (mmc->enabled) {
		if (cpu_is_omap24xx()) {
			omap_cfg_reg(H18_24XX_MMC_CMD);
			omap_cfg_reg(H15_24XX_MMC_CLKI);
			omap_cfg_reg(G19_24XX_MMC_CLKO);
			omap_cfg_reg(F20_24XX_MMC_DAT0);
			omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
			omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
		} else {
			omap_cfg_reg(MMC_CMD);
			omap_cfg_reg(MMC_CLK);
			omap_cfg_reg(MMC_DAT0);
			if (cpu_is_omap1710()) {
				omap_cfg_reg(M15_1710_MMC_CLKI);
				omap_cfg_reg(P19_1710_MMC_CMDDIR);
				omap_cfg_reg(P20_1710_MMC_DATDIR0);
			}
		}
		if (mmc->wire4) {
			if (cpu_is_omap24xx()) {
				omap_cfg_reg(H14_24XX_MMC_DAT1);
				omap_cfg_reg(E19_24XX_MMC_DAT2);
				omap_cfg_reg(D19_24XX_MMC_DAT3);
				omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
				omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
				omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
			} else {
				omap_cfg_reg(MMC_DAT1);
				/* NOTE:  DAT2 can be on W10 (here) or M15 */
				if (!mmc->nomux)
					omap_cfg_reg(MMC_DAT2);
				omap_cfg_reg(MMC_DAT3);
			}
		}
		mmc1_conf = *mmc;
		(void) platform_device_register(&mmc_omap_device1);
	}

#ifdef	CONFIG_ARCH_OMAP16XX
	/* block 2 is on newer chips, and has many pinout options */
	mmc = &mmc_conf->mmc[1];
	if (mmc->enabled) {
		if (!mmc->nomux) {
			omap_cfg_reg(Y8_1610_MMC2_CMD);
			omap_cfg_reg(Y10_1610_MMC2_CLK);
			omap_cfg_reg(R18_1610_MMC2_CLKIN);
			omap_cfg_reg(W8_1610_MMC2_DAT0);
			if (mmc->wire4) {
				omap_cfg_reg(V8_1610_MMC2_DAT1);
				omap_cfg_reg(W15_1610_MMC2_DAT2);
				omap_cfg_reg(R10_1610_MMC2_DAT3);
			}

			/* These are needed for the level shifter */
			omap_cfg_reg(V9_1610_MMC2_CMDDIR);
			omap_cfg_reg(V5_1610_MMC2_DATDIR0);
			omap_cfg_reg(W19_1610_MMC2_DATDIR1);
		}

		/* Feedback clock must be set on OMAP-1710 MMC2 */
		if (cpu_is_omap1710())
			omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
				     MOD_CONF_CTRL_1);
		mmc2_conf = *mmc;
		(void) platform_device_register(&mmc_omap_device2);
	}
#endif
	return;
}
#else
static inline void omap_init_mmc(void) {}
#endif

/*-------------------------------------------------------------------------*/

/* Numbering for the SPI-capable controllers when used for SPI:
 * spi		= 1
 * uwire	= 2
 * mmc1..2	= 3..4
 * mcbsp1..3	= 5..7
 */

#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)

#define	OMAP_UWIRE_BASE		0xfffb3000

static struct resource uwire_resources[] = {
	{
		.start		= OMAP_UWIRE_BASE,
		.end		= OMAP_UWIRE_BASE + 0x20,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device omap_uwire_device = {
	.name	   = "omap_uwire",
	.id	     = -1,
	.num_resources	= ARRAY_SIZE(uwire_resources),
	.resource	= uwire_resources,
};

static void omap_init_uwire(void)
{
	/* FIXME define and use a boot tag; not all boards will be hooking
	 * up devices to the microwire controller, and multi-board configs
	 * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
	 */

	/* board-specific code must configure chipselects (only a few
	 * are normally used) and SCLK/SDI/SDO (each has two choices).
	 */
	(void) platform_device_register(&omap_uwire_device);
}
#else
static inline void omap_init_uwire(void) {}
#endif

/*-------------------------------------------------------------------------*/

#if	defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)

#ifdef CONFIG_ARCH_OMAP24XX
#define	OMAP_WDT_BASE		0x48022000
#else
#define	OMAP_WDT_BASE		0xfffeb000
#endif

static struct resource wdt_resources[] = {
	{
		.start		= OMAP_WDT_BASE,
		.end		= OMAP_WDT_BASE + 0x4f,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device omap_wdt_device = {
	.name	   = "omap_wdt",
	.id	     = -1,
	.num_resources	= ARRAY_SIZE(wdt_resources),
	.resource	= wdt_resources,
};

static void omap_init_wdt(void)
{
	(void) platform_device_register(&omap_wdt_device);
}
#else
static inline void omap_init_wdt(void) {}
#endif

/*-------------------------------------------------------------------------*/

#if	defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE)

#ifdef CONFIG_ARCH_OMAP24XX
#define	OMAP_RNG_BASE		0x480A0000
#else
#define	OMAP_RNG_BASE		0xfffe5000
#endif

static struct resource rng_resources[] = {
	{
		.start		= OMAP_RNG_BASE,
		.end		= OMAP_RNG_BASE + 0x4f,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device omap_rng_device = {
	.name	   = "omap_rng",
	.id	     = -1,
	.num_resources	= ARRAY_SIZE(rng_resources),
	.resource	= rng_resources,
};

static void omap_init_rng(void)
{
	(void) platform_device_register(&omap_rng_device);
}
#else
static inline void omap_init_rng(void) {}
#endif

/*
 * This gets called after board-specific INIT_MACHINE, and initializes most
 * on-chip peripherals accessible on this board (except for few like USB):
 *
 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 *	code will have muxed GPIO pins and done "nonstandard" setup;
 *	that code could live in the boot loader.
 *  (b) Populating board-specific platform_data with the data drivers
 *	rely on to handle wiring variations.
 *  (c) Creating platform devices as meaningful on this board and
 *	with this kernel configuration.
 *
 * Claiming GPIOs, and setting their direction and initial values, is the
 * responsibility of the device drivers.  So is responding to probe().
 *
 * Board-specific knowlege like creating devices or pin setup is to be
 * kept out of drivers as much as possible.  In particular, pin setup
 * may be handled by the boot loader, and drivers should expect it will
 * normally have been done by the time they're probed.
 */
static int __init omap_init_devices(void)
{
	/* please keep these calls, and their implementations above,
	 * in alphabetical order so they're easier to sort through.
	 */
	omap_init_i2c();
	omap_init_kp();
	omap_init_mmc();
	omap_init_uwire();
	omap_init_wdt();
	omap_init_rng();

	return 0;
}
arch_initcall(omap_init_devices);