[ARM] 4246/1: i2c-pxa: add adapter class to platform specific data
[deliverable/linux.git] / arch / arm / mach-pxa / generic.c
CommitLineData
1da177e4
LT
1/*
2 * linux/arch/arm/mach-pxa/generic.c
3 *
4 * Author: Nicolas Pitre
5 * Created: Jun 15, 2001
6 * Copyright: MontaVista Software Inc.
7 *
8 * Code common to all PXA machines.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * Since this file should be linked before any other machine specific file,
15 * the __initcall() here will be executed first. This serves as default
16 * initialization stuff for PXA machines which can be overridden later if
17 * need be.
18 */
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/init.h>
22#include <linux/delay.h>
d052d1be 23#include <linux/platform_device.h>
1da177e4
LT
24#include <linux/ioport.h>
25#include <linux/pm.h>
4e57b681 26#include <linux/string.h>
1da177e4 27
2dc20a51
NP
28#include <linux/sched.h>
29#include <asm/cnt32_to_63.h>
30#include <asm/div64.h>
31
1da177e4
LT
32#include <asm/hardware.h>
33#include <asm/irq.h>
34#include <asm/system.h>
35#include <asm/pgtable.h>
36#include <asm/mach/map.h>
37
38#include <asm/arch/pxa-regs.h>
3deac046 39#include <asm/arch/gpio.h>
1da177e4
LT
40#include <asm/arch/udc.h>
41#include <asm/arch/pxafb.h>
42#include <asm/arch/mmc.h>
6f475c01 43#include <asm/arch/irda.h>
eb9181a2 44#include <asm/arch/i2c.h>
1da177e4
LT
45
46#include "generic.h"
47
2dc20a51
NP
48/*
49 * This is the PXA2xx sched_clock implementation. This has a resolution
50 * of at least 308ns and a maximum value that depends on the value of
51 * CLOCK_TICK_RATE.
52 *
53 * The return value is guaranteed to be monotonic in that range as
54 * long as there is always less than 582 seconds between successive
55 * calls to this function.
56 */
57unsigned long long sched_clock(void)
58{
59 unsigned long long v = cnt32_to_63(OSCR);
60 /* Note: top bit ov v needs cleared unless multiplier is even. */
61
62#if CLOCK_TICK_RATE == 3686400
63 /* 1E9 / 3686400 => 78125 / 288, max value = 32025597s (370 days). */
64 /* The <<1 is used to get rid of tick.hi top bit */
65 v *= 78125<<1;
66 do_div(v, 288<<1);
67#elif CLOCK_TICK_RATE == 3250000
68 /* 1E9 / 3250000 => 4000 / 13, max value = 709490156s (8211 days) */
69 v *= 4000;
70 do_div(v, 13);
71#elif CLOCK_TICK_RATE == 3249600
72 /* 1E9 / 3249600 => 625000 / 2031, max value = 4541295s (52 days) */
73 v *= 625000;
74 do_div(v, 2031);
75#else
76#warning "consider fixing sched_clock for your value of CLOCK_TICK_RATE"
77 /*
78 * 96-bit math to perform tick * NSEC_PER_SEC / CLOCK_TICK_RATE for
79 * any value of CLOCK_TICK_RATE. Max value is in the 80 thousand
0c48d314
NP
80 * years range and truncation to unsigned long long limits it to
81 * sched_clock's max range of ~584 years. This is nice but with
82 * higher computation cost.
2dc20a51
NP
83 */
84 {
85 union {
86 unsigned long long val;
87 struct { unsigned long lo, hi; };
88 } x;
89 unsigned long long y;
90
91 x.val = v;
92 x.hi &= 0x7fffffff;
93 y = (unsigned long long)x.lo * NSEC_PER_SEC;
94 x.lo = y;
95 y = (y >> 32) + (unsigned long long)x.hi * NSEC_PER_SEC;
96 x.hi = do_div(y, CLOCK_TICK_RATE);
97 do_div(x.val, CLOCK_TICK_RATE);
98 x.hi += y;
99 v = x.val;
100 }
101#endif
102
103 return v;
104}
105
1da177e4
LT
106/*
107 * Handy function to set GPIO alternate functions
108 */
109
3deac046 110int pxa_gpio_mode(int gpio_mode)
1da177e4
LT
111{
112 unsigned long flags;
113 int gpio = gpio_mode & GPIO_MD_MASK_NR;
114 int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
115 int gafr;
116
3deac046
PZ
117 if (gpio > PXA_LAST_GPIO)
118 return -EINVAL;
119
1da177e4
LT
120 local_irq_save(flags);
121 if (gpio_mode & GPIO_DFLT_LOW)
122 GPCR(gpio) = GPIO_bit(gpio);
123 else if (gpio_mode & GPIO_DFLT_HIGH)
124 GPSR(gpio) = GPIO_bit(gpio);
125 if (gpio_mode & GPIO_MD_MASK_DIR)
126 GPDR(gpio) |= GPIO_bit(gpio);
127 else
128 GPDR(gpio) &= ~GPIO_bit(gpio);
129 gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
130 GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
131 local_irq_restore(flags);
3deac046
PZ
132
133 return 0;
1da177e4
LT
134}
135
136EXPORT_SYMBOL(pxa_gpio_mode);
137
3deac046
PZ
138/*
139 * Return GPIO level
140 */
141int pxa_gpio_get_value(unsigned gpio)
142{
143 return __gpio_get_value(gpio);
144}
145
146EXPORT_SYMBOL(pxa_gpio_get_value);
147
148/*
149 * Set output GPIO level
150 */
151void pxa_gpio_set_value(unsigned gpio, int value)
152{
153 __gpio_set_value(gpio, value);
154}
155
156EXPORT_SYMBOL(pxa_gpio_set_value);
157
1da177e4
LT
158/*
159 * Routine to safely enable or disable a clock in the CKEN
160 */
161void pxa_set_cken(int clock, int enable)
162{
163 unsigned long flags;
164 local_irq_save(flags);
165
166 if (enable)
167 CKEN |= clock;
168 else
169 CKEN &= ~clock;
170
171 local_irq_restore(flags);
172}
173
174EXPORT_SYMBOL(pxa_set_cken);
175
176/*
177 * Intel PXA2xx internal register mapping.
178 *
179 * Note 1: not all PXA2xx variants implement all those addresses.
180 *
181 * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
182 * and cache flush area.
183 */
184static struct map_desc standard_io_desc[] __initdata = {
6f9182eb
DS
185 { /* Devs */
186 .virtual = 0xf2000000,
187 .pfn = __phys_to_pfn(0x40000000),
188 .length = 0x02000000,
189 .type = MT_DEVICE
190 }, { /* LCD */
191 .virtual = 0xf4000000,
192 .pfn = __phys_to_pfn(0x44000000),
193 .length = 0x00100000,
194 .type = MT_DEVICE
195 }, { /* Mem Ctl */
196 .virtual = 0xf6000000,
197 .pfn = __phys_to_pfn(0x48000000),
198 .length = 0x00100000,
199 .type = MT_DEVICE
200 }, { /* USB host */
201 .virtual = 0xf8000000,
202 .pfn = __phys_to_pfn(0x4c000000),
203 .length = 0x00100000,
204 .type = MT_DEVICE
205 }, { /* Camera */
206 .virtual = 0xfa000000,
207 .pfn = __phys_to_pfn(0x50000000),
208 .length = 0x00100000,
209 .type = MT_DEVICE
210 }, { /* IMem ctl */
211 .virtual = 0xfe000000,
212 .pfn = __phys_to_pfn(0x58000000),
213 .length = 0x00100000,
214 .type = MT_DEVICE
215 }, { /* UNCACHED_PHYS_0 */
216 .virtual = 0xff000000,
217 .pfn = __phys_to_pfn(0x00000000),
218 .length = 0x00100000,
219 .type = MT_DEVICE
220 }
1da177e4
LT
221};
222
223void __init pxa_map_io(void)
224{
225 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
226 get_clk_frequency_khz(1);
227}
228
229
230static struct resource pxamci_resources[] = {
231 [0] = {
232 .start = 0x41100000,
233 .end = 0x41100fff,
234 .flags = IORESOURCE_MEM,
235 },
236 [1] = {
237 .start = IRQ_MMC,
238 .end = IRQ_MMC,
239 .flags = IORESOURCE_IRQ,
240 },
241};
242
243static u64 pxamci_dmamask = 0xffffffffUL;
244
245static struct platform_device pxamci_device = {
246 .name = "pxa2xx-mci",
247 .id = -1,
248 .dev = {
249 .dma_mask = &pxamci_dmamask,
250 .coherent_dma_mask = 0xffffffff,
251 },
252 .num_resources = ARRAY_SIZE(pxamci_resources),
253 .resource = pxamci_resources,
254};
255
256void __init pxa_set_mci_info(struct pxamci_platform_data *info)
257{
258 pxamci_device.dev.platform_data = info;
259}
260
261
262static struct pxa2xx_udc_mach_info pxa_udc_info;
263
264void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
265{
266 memcpy(&pxa_udc_info, info, sizeof *info);
267}
268
269static struct resource pxa2xx_udc_resources[] = {
270 [0] = {
271 .start = 0x40600000,
272 .end = 0x4060ffff,
273 .flags = IORESOURCE_MEM,
274 },
275 [1] = {
276 .start = IRQ_USB,
277 .end = IRQ_USB,
278 .flags = IORESOURCE_IRQ,
279 },
280};
281
282static u64 udc_dma_mask = ~(u32)0;
283
284static struct platform_device udc_device = {
285 .name = "pxa2xx-udc",
286 .id = -1,
287 .resource = pxa2xx_udc_resources,
288 .num_resources = ARRAY_SIZE(pxa2xx_udc_resources),
289 .dev = {
290 .platform_data = &pxa_udc_info,
291 .dma_mask = &udc_dma_mask,
292 }
293};
294
1da177e4
LT
295static struct resource pxafb_resources[] = {
296 [0] = {
297 .start = 0x44000000,
298 .end = 0x4400ffff,
299 .flags = IORESOURCE_MEM,
300 },
301 [1] = {
302 .start = IRQ_LCD,
303 .end = IRQ_LCD,
304 .flags = IORESOURCE_IRQ,
305 },
306};
307
308static u64 fb_dma_mask = ~(u64)0;
309
310static struct platform_device pxafb_device = {
311 .name = "pxa2xx-fb",
312 .id = -1,
313 .dev = {
1da177e4
LT
314 .dma_mask = &fb_dma_mask,
315 .coherent_dma_mask = 0xffffffff,
316 },
317 .num_resources = ARRAY_SIZE(pxafb_resources),
318 .resource = pxafb_resources,
319};
320
d14b272b
RP
321void __init set_pxa_fb_info(struct pxafb_mach_info *info)
322{
323 pxafb_device.dev.platform_data = info;
324}
325
cb38c569
RP
326void __init set_pxa_fb_parent(struct device *parent_dev)
327{
328 pxafb_device.dev.parent = parent_dev;
329}
330
1da177e4
LT
331static struct platform_device ffuart_device = {
332 .name = "pxa2xx-uart",
333 .id = 0,
334};
335static struct platform_device btuart_device = {
336 .name = "pxa2xx-uart",
337 .id = 1,
338};
339static struct platform_device stuart_device = {
340 .name = "pxa2xx-uart",
341 .id = 2,
342};
d9e29649
MR
343static struct platform_device hwuart_device = {
344 .name = "pxa2xx-uart",
345 .id = 3,
346};
1da177e4 347
bb9bffcb
RK
348static struct resource i2c_resources[] = {
349 {
350 .start = 0x40301680,
351 .end = 0x403016a3,
352 .flags = IORESOURCE_MEM,
353 }, {
354 .start = IRQ_I2C,
355 .end = IRQ_I2C,
356 .flags = IORESOURCE_IRQ,
357 },
358};
359
360static struct platform_device i2c_device = {
361 .name = "pxa2xx-i2c",
362 .id = 0,
363 .resource = i2c_resources,
364 .num_resources = ARRAY_SIZE(i2c_resources),
365};
366
a7b4e550
GL
367#ifdef CONFIG_PXA27x
368static struct resource i2c_power_resources[] = {
369 {
370 .start = 0x40f00180,
371 .end = 0x40f001a3,
372 .flags = IORESOURCE_MEM,
373 }, {
374 .start = IRQ_PWRI2C,
375 .end = IRQ_PWRI2C,
376 .flags = IORESOURCE_IRQ,
377 },
378};
379
380static struct platform_device i2c_power_device = {
381 .name = "pxa2xx-i2c",
382 .id = 1,
383 .resource = i2c_power_resources,
384 .num_resources = ARRAY_SIZE(i2c_resources),
385};
386#endif
387
bb9bffcb
RK
388void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
389{
390 i2c_device.dev.platform_data = info;
391}
392
b2640b42
MR
393static struct resource i2s_resources[] = {
394 {
395 .start = 0x40400000,
396 .end = 0x40400083,
397 .flags = IORESOURCE_MEM,
398 }, {
399 .start = IRQ_I2S,
400 .end = IRQ_I2S,
401 .flags = IORESOURCE_IRQ,
402 },
403};
404
405static struct platform_device i2s_device = {
406 .name = "pxa2xx-i2s",
407 .id = -1,
b5723521 408 .resource = i2s_resources,
b2640b42
MR
409 .num_resources = ARRAY_SIZE(i2s_resources),
410};
411
6f475c01
NP
412static u64 pxaficp_dmamask = ~(u32)0;
413
414static struct platform_device pxaficp_device = {
415 .name = "pxa2xx-ir",
416 .id = -1,
417 .dev = {
418 .dma_mask = &pxaficp_dmamask,
419 .coherent_dma_mask = 0xffffffff,
420 },
421};
422
423void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
424{
425 pxaficp_device.dev.platform_data = info;
426}
427
e842f1c8
RP
428static struct platform_device pxartc_device = {
429 .name = "sa1100-rtc",
430 .id = -1,
431};
432
1da177e4
LT
433static struct platform_device *devices[] __initdata = {
434 &pxamci_device,
435 &udc_device,
436 &pxafb_device,
437 &ffuart_device,
438 &btuart_device,
439 &stuart_device,
6f475c01 440 &pxaficp_device,
bb9bffcb 441 &i2c_device,
a7b4e550
GL
442#ifdef CONFIG_PXA27x
443 &i2c_power_device,
444#endif
b2640b42 445 &i2s_device,
e842f1c8 446 &pxartc_device,
1da177e4
LT
447};
448
449static int __init pxa_init(void)
450{
d9e29649
MR
451 int cpuid, ret;
452
453 ret = platform_add_devices(devices, ARRAY_SIZE(devices));
454 if (ret)
455 return ret;
456
457 /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
458 cpuid = read_cpuid(CPUID_ID);
459 if (((cpuid >> 4) & 0xfff) == 0x2d0 ||
460 ((cpuid >> 4) & 0xfff) == 0x290)
461 ret = platform_device_register(&hwuart_device);
462
463 return ret;
1da177e4
LT
464}
465
466subsys_initcall(pxa_init);
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