aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa/generic.c
blob: 1c34946ee16e60c0fb3f6ff6491efc276455e108 (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
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
/*
 *  linux/arch/arm/mach-pxa/generic.c
 *
 *  Author:	Nicolas Pitre
 *  Created:	Jun 15, 2001
 *  Copyright:	MontaVista Software Inc.
 *
 * Code common to all PXA machines.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Since this file should be linked before any other machine specific file,
 * the __initcall() here will be executed first.  This serves as default
 * initialization stuff for PXA machines which can be overridden later if
 * need be.
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
#include <linux/pm.h>
#include <linux/string.h>

#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>

#include <asm/arch/pxa-regs.h>
#include <asm/arch/gpio.h>
#include <asm/arch/udc.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>
#include <asm/arch/irda.h>
#include <asm/arch/i2c.h>

#include "devices.h"
#include "generic.h"

/*
 * Get the clock frequency as reflected by CCCR and the turbo flag.
 * We assume these values have been applied via a fcs.
 * If info is not 0 we also display the current settings.
 */
unsigned int get_clk_frequency_khz(int info)
{
	if (cpu_is_pxa21x() || cpu_is_pxa25x())
		return pxa25x_get_clk_frequency_khz(info);
	else if (cpu_is_pxa27x())
		return pxa27x_get_clk_frequency_khz(info);
	else
		return pxa3xx_get_clk_frequency_khz(info);
}
EXPORT_SYMBOL(get_clk_frequency_khz);

/*
 * Return the current memory clock frequency in units of 10kHz
 */
unsigned int get_memclk_frequency_10khz(void)
{
	if (cpu_is_pxa21x() || cpu_is_pxa25x())
		return pxa25x_get_memclk_frequency_10khz();
	else if (cpu_is_pxa27x())
		return pxa27x_get_memclk_frequency_10khz();
	else
		return pxa3xx_get_memclk_frequency_10khz();
}
EXPORT_SYMBOL(get_memclk_frequency_10khz);

/*
 * Handy function to set GPIO alternate functions
 */
int pxa_last_gpio;

int pxa_gpio_mode(int gpio_mode)
{
	unsigned long flags;
	int gpio = gpio_mode & GPIO_MD_MASK_NR;
	int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
	int gafr;

	if (gpio > pxa_last_gpio)
		return -EINVAL;

	local_irq_save(flags);
	if (gpio_mode & GPIO_DFLT_LOW)
		GPCR(gpio) = GPIO_bit(gpio);
	else if (gpio_mode & GPIO_DFLT_HIGH)
		GPSR(gpio) = GPIO_bit(gpio);
	if (gpio_mode & GPIO_MD_MASK_DIR)
		GPDR(gpio) |= GPIO_bit(gpio);
	else
		GPDR(gpio) &= ~GPIO_bit(gpio);
	gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
	GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
	local_irq_restore(flags);

	return 0;
}

EXPORT_SYMBOL(pxa_gpio_mode);

int gpio_direction_input(unsigned gpio)
{
	unsigned long flags;
	u32 mask;

	if (gpio > pxa_last_gpio)
		return -EINVAL;

	mask = GPIO_bit(gpio);
	local_irq_save(flags);
	GPDR(gpio) &= ~mask;
	local_irq_restore(flags);

	return 0;
}
EXPORT_SYMBOL(gpio_direction_input);

int gpio_direction_output(unsigned gpio, int value)
{
	unsigned long flags;
	u32 mask;

	if (gpio > pxa_last_gpio)
		return -EINVAL;

	mask = GPIO_bit(gpio);
	local_irq_save(flags);
	if (value)
		GPSR(gpio) = mask;
	else
		GPCR(gpio) = mask;
	GPDR(gpio) |= mask;
	local_irq_restore(flags);

	return 0;
}
EXPORT_SYMBOL(gpio_direction_output);

/*
 * Return GPIO level
 */
int pxa_gpio_get_value(unsigned gpio)
{
	return __gpio_get_value(gpio);
}

EXPORT_SYMBOL(pxa_gpio_get_value);

/*
 * Set output GPIO level
 */
void pxa_gpio_set_value(unsigned gpio, int value)
{
	__gpio_set_value(gpio, value);
}

EXPORT_SYMBOL(pxa_gpio_set_value);

/*
 * Routine to safely enable or disable a clock in the CKEN
 */
void __pxa_set_cken(int clock, int enable)
{
	unsigned long flags;
	local_irq_save(flags);

	if (enable)
		CKEN |= (1 << clock);
	else
		CKEN &= ~(1 << clock);

	local_irq_restore(flags);
}

EXPORT_SYMBOL(__pxa_set_cken);

/*
 * Intel PXA2xx internal register mapping.
 *
 * Note 1: not all PXA2xx variants implement all those addresses.
 *
 * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
 *         and cache flush area.
 */
static struct map_desc standard_io_desc[] __initdata = {
  	{	/* Devs */
		.virtual	=  0xf2000000,
		.pfn		= __phys_to_pfn(0x40000000),
		.length		= 0x02000000,
		.type		= MT_DEVICE
	}, {	/* LCD */
		.virtual	=  0xf4000000,
		.pfn		= __phys_to_pfn(0x44000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* Mem Ctl */
		.virtual	=  0xf6000000,
		.pfn		= __phys_to_pfn(0x48000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* USB host */
		.virtual	=  0xf8000000,
		.pfn		= __phys_to_pfn(0x4c000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* Camera */
		.virtual	=  0xfa000000,
		.pfn		= __phys_to_pfn(0x50000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* IMem ctl */
		.virtual	=  0xfe000000,
		.pfn		= __phys_to_pfn(0x58000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* UNCACHED_PHYS_0 */
		.virtual	= 0xff000000,
		.pfn		= __phys_to_pfn(0x00000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}
};

void __init pxa_map_io(void)
{
	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
	get_clk_frequency_khz(1);
}


static struct resource pxamci_resources[] = {
	[0] = {
		.start	= 0x41100000,
		.end	= 0x41100fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_MMC,
		.end	= IRQ_MMC,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 pxamci_dmamask = 0xffffffffUL;

struct platform_device pxa_device_mci = {
	.name		= "pxa2xx-mci",
	.id		= -1,
	.dev		= {
		.dma_mask = &pxamci_dmamask,
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(pxamci_resources),
	.resource	= pxamci_resources,
};

void __init pxa_set_mci_info(struct pxamci_platform_data *info)
{
	pxa_device_mci.dev.platform_data = info;
}


static struct pxa2xx_udc_mach_info pxa_udc_info;

void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
{
	memcpy(&pxa_udc_info, info, sizeof *info);
}

static struct resource pxa2xx_udc_resources[] = {
	[0] = {
		.start	= 0x40600000,
		.end	= 0x4060ffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_USB,
		.end	= IRQ_USB,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 udc_dma_mask = ~(u32)0;

struct platform_device pxa_device_udc = {
	.name		= "pxa2xx-udc",
	.id		= -1,
	.resource	= pxa2xx_udc_resources,
	.num_resources	= ARRAY_SIZE(pxa2xx_udc_resources),
	.dev		=  {
		.platform_data	= &pxa_udc_info,
		.dma_mask	= &udc_dma_mask,
	}
};

static struct resource pxafb_resources[] = {
	[0] = {
		.start	= 0x44000000,
		.end	= 0x4400ffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_LCD,
		.end	= IRQ_LCD,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 fb_dma_mask = ~(u64)0;

struct platform_device pxa_device_fb = {
	.name		= "pxa2xx-fb",
	.id		= -1,
	.dev		= {
		.dma_mask	= &fb_dma_mask,
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(pxafb_resources),
	.resource	= pxafb_resources,
};

void __init set_pxa_fb_info(struct pxafb_mach_info *info)
{
	pxa_device_fb.dev.platform_data = info;
}

void __init set_pxa_fb_parent(struct device *parent_dev)
{
	pxa_device_fb.dev.parent = parent_dev;
}

static struct resource pxa_resource_ffuart[] = {
	{
		.start	= __PREG(FFUART),
		.end	= __PREG(FFUART) + 35,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_FFUART,
		.end	= IRQ_FFUART,
		.flags	= IORESOURCE_IRQ,
	}
};

struct platform_device pxa_device_ffuart= {
	.name		= "pxa2xx-uart",
	.id		= 0,
	.resource	= pxa_resource_ffuart,
	.num_resources	= ARRAY_SIZE(pxa_resource_ffuart),
};

static struct resource pxa_resource_btuart[] = {
	{
		.start	= __PREG(BTUART),
		.end	= __PREG(BTUART) + 35,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_BTUART,
		.end	= IRQ_BTUART,
		.flags	= IORESOURCE_IRQ,
	}
};

struct platform_device pxa_device_btuart = {
	.name		= "pxa2xx-uart",
	.id		= 1,
	.resource	= pxa_resource_btuart,
	.num_resources	= ARRAY_SIZE(pxa_resource_btuart),
};

static struct resource pxa_resource_stuart[] = {
	{
		.start	= __PREG(STUART),
		.end	= __PREG(STUART) + 35,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_STUART,
		.end	= IRQ_STUART,
		.flags	= IORESOURCE_IRQ,
	}
};

struct platform_device pxa_device_stuart = {
	.name		= "pxa2xx-uart",
	.id		= 2,
	.resource	= pxa_resource_stuart,
	.num_resources	= ARRAY_SIZE(pxa_resource_stuart),
};

static struct resource pxa_resource_hwuart[] = {
	{
		.start	= __PREG(HWUART),
		.end	= __PREG(HWUART) + 47,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_HWUART,
		.end	= IRQ_HWUART,
		.flags	= IORESOURCE_IRQ,
	}
};

struct platform_device pxa_device_hwuart = {
	.name		= "pxa2xx-uart",
	.id		= 3,
	.resource	= pxa_resource_hwuart,
	.num_resources	= ARRAY_SIZE(pxa_resource_hwuart),
};

static struct resource pxai2c_resources[] = {
	{
		.start	= 0x40301680,
		.end	= 0x403016a3,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_I2C,
		.end	= IRQ_I2C,
		.flags	= IORESOURCE_IRQ,
	},
};

struct platform_device pxa_device_i2c = {
	.name		= "pxa2xx-i2c",
	.id		= 0,
	.resource	= pxai2c_resources,
	.num_resources	= ARRAY_SIZE(pxai2c_resources),
};

void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
{
	pxa_device_i2c.dev.platform_data = info;
}

static struct resource pxai2s_resources[] = {
	{
		.start	= 0x40400000,
		.end	= 0x40400083,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_I2S,
		.end	= IRQ_I2S,
		.flags	= IORESOURCE_IRQ,
	},
};

struct platform_device pxa_device_i2s = {
	.name		= "pxa2xx-i2s",
	.id		= -1,
	.resource	= pxai2s_resources,
	.num_resources	= ARRAY_SIZE(pxai2s_resources),
};

static u64 pxaficp_dmamask = ~(u32)0;

struct platform_device pxa_device_ficp = {
	.name		= "pxa2xx-ir",
	.id		= -1,
	.dev		= {
		.dma_mask = &pxaficp_dmamask,
		.coherent_dma_mask = 0xffffffff,
	},
};

void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
{
	pxa_device_ficp.dev.platform_data = info;
}

struct platform_device pxa_device_rtc = {
	.name		= "sa1100-rtc",
	.id		= -1,
};