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i2c-eg20t: change timeout value 50msec to 1000msec
[zen-stable.git] / drivers / gpio / gpio-samsung.c
blob0a79a1167a251dd71cd1c02dc82aedd1b1842213
1 /*
2 * Copyright (c) 2009-2011 Samsung Electronics Co., Ltd.
3 * http://www.samsung.com/
4 *
5 * Copyright 2008 Openmoko, Inc.
6 * Copyright 2008 Simtec Electronics
7 * Ben Dooks <ben@simtec.co.uk>
8 * http://armlinux.simtec.co.uk/
9 *
10 * SAMSUNG - GPIOlib support
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/irq.h>
19 #include <linux/io.h>
20 #include <linux/gpio.h>
21 #include <linux/init.h>
22 #include <linux/spinlock.h>
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/device.h>
26 #include <linux/ioport.h>
27 #include <linux/of.h>
28 #include <linux/slab.h>
29 #include <linux/of_address.h>
30
31 #include <asm/irq.h>
32
33 #include <mach/hardware.h>
34 #include <mach/map.h>
35 #include <mach/regs-clock.h>
36 #include <mach/regs-gpio.h>
37
38 #include <plat/cpu.h>
39 #include <plat/gpio-core.h>
40 #include <plat/gpio-cfg.h>
41 #include <plat/gpio-cfg-helpers.h>
42 #include <plat/gpio-fns.h>
43 #include <plat/pm.h>
44
45 #ifndef DEBUG_GPIO
46 #define gpio_dbg(x...) do { } while (0)
47 #else
48 #define gpio_dbg(x...) printk(KERN_DEBUG x)
49 #endif
50
51 int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
52 unsigned int off, samsung_gpio_pull_t pull)
53 {
54 void __iomem *reg = chip->base + 0x08;
55 int shift = off * 2;
56 u32 pup;
57
58 pup = __raw_readl(reg);
59 pup &= ~(3 << shift);
60 pup |= pull << shift;
61 __raw_writel(pup, reg);
62
63 return 0;
64 }
65
66 samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
67 unsigned int off)
68 {
69 void __iomem *reg = chip->base + 0x08;
70 int shift = off * 2;
71 u32 pup = __raw_readl(reg);
72
73 pup >>= shift;
74 pup &= 0x3;
75
76 return (__force samsung_gpio_pull_t)pup;
77 }
78
79 int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
80 unsigned int off, samsung_gpio_pull_t pull)
81 {
82 switch (pull) {
83 case S3C_GPIO_PULL_NONE:
84 pull = 0x01;
85 break;
86 case S3C_GPIO_PULL_UP:
87 pull = 0x00;
88 break;
89 case S3C_GPIO_PULL_DOWN:
90 pull = 0x02;
91 break;
92 }
93 return samsung_gpio_setpull_updown(chip, off, pull);
94 }
95
96 samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
97 unsigned int off)
98 {
99 samsung_gpio_pull_t pull;
100
101 pull = samsung_gpio_getpull_updown(chip, off);
102
103 switch (pull) {
104 case 0x00:
105 pull = S3C_GPIO_PULL_UP;
106 break;
107 case 0x01:
108 case 0x03:
109 pull = S3C_GPIO_PULL_NONE;
110 break;
111 case 0x02:
112 pull = S3C_GPIO_PULL_DOWN;
113 break;
114 }
115
116 return pull;
117 }
118
119 static int s3c24xx_gpio_setpull_1(struct samsung_gpio_chip *chip,
120 unsigned int off, samsung_gpio_pull_t pull,
121 samsung_gpio_pull_t updown)
122 {
123 void __iomem *reg = chip->base + 0x08;
124 u32 pup = __raw_readl(reg);
125
126 if (pull == updown)
127 pup &= ~(1 << off);
128 else if (pull == S3C_GPIO_PULL_NONE)
129 pup |= (1 << off);
130 else
131 return -EINVAL;
132
133 __raw_writel(pup, reg);
134 return 0;
135 }
136
137 static samsung_gpio_pull_t s3c24xx_gpio_getpull_1(struct samsung_gpio_chip *chip,
138 unsigned int off,
139 samsung_gpio_pull_t updown)
140 {
141 void __iomem *reg = chip->base + 0x08;
142 u32 pup = __raw_readl(reg);
143
144 pup &= (1 << off);
145 return pup ? S3C_GPIO_PULL_NONE : updown;
146 }
147
148 samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
149 unsigned int off)
150 {
151 return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_UP);
152 }
153
154 int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
155 unsigned int off, samsung_gpio_pull_t pull)
156 {
157 return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_UP);
158 }
159
160 samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
161 unsigned int off)
162 {
163 return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_DOWN);
164 }
165
166 int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
167 unsigned int off, samsung_gpio_pull_t pull)
168 {
169 return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN);
170 }
171
172 static int exynos4_gpio_setpull(struct samsung_gpio_chip *chip,
173 unsigned int off, samsung_gpio_pull_t pull)
174 {
175 if (pull == S3C_GPIO_PULL_UP)
176 pull = 3;
177
178 return samsung_gpio_setpull_updown(chip, off, pull);
179 }
180
181 static samsung_gpio_pull_t exynos4_gpio_getpull(struct samsung_gpio_chip *chip,
182 unsigned int off)
183 {
184 samsung_gpio_pull_t pull;
185
186 pull = samsung_gpio_getpull_updown(chip, off);
187
188 if (pull == 3)
189 pull = S3C_GPIO_PULL_UP;
190
191 return pull;
192 }
193
194 /*
195 * samsung_gpio_setcfg_2bit - Samsung 2bit style GPIO configuration.
196 * @chip: The gpio chip that is being configured.
197 * @off: The offset for the GPIO being configured.
198 * @cfg: The configuration value to set.
199 *
200 * This helper deal with the GPIO cases where the control register
201 * has two bits of configuration per gpio, which have the following
202 * functions:
203 * 00 = input
204 * 01 = output
205 * 1x = special function
206 */
207
208 static int samsung_gpio_setcfg_2bit(struct samsung_gpio_chip *chip,
209 unsigned int off, unsigned int cfg)
210 {
211 void __iomem *reg = chip->base;
212 unsigned int shift = off * 2;
213 u32 con;
214
215 if (samsung_gpio_is_cfg_special(cfg)) {
216 cfg &= 0xf;
217 if (cfg > 3)
218 return -EINVAL;
219
220 cfg <<= shift;
221 }
222
223 con = __raw_readl(reg);
224 con &= ~(0x3 << shift);
225 con |= cfg;
226 __raw_writel(con, reg);
227
228 return 0;
229 }
230
231 /*
232 * samsung_gpio_getcfg_2bit - Samsung 2bit style GPIO configuration read.
233 * @chip: The gpio chip that is being configured.
234 * @off: The offset for the GPIO being configured.
235 *
236 * The reverse of samsung_gpio_setcfg_2bit(). Will return a value which
237 * could be directly passed back to samsung_gpio_setcfg_2bit(), from the
238 * S3C_GPIO_SPECIAL() macro.
239 */
240
241 static unsigned int samsung_gpio_getcfg_2bit(struct samsung_gpio_chip *chip,
242 unsigned int off)
243 {
244 u32 con;
245
246 con = __raw_readl(chip->base);
247 con >>= off * 2;
248 con &= 3;
249
250 /* this conversion works for IN and OUT as well as special mode */
251 return S3C_GPIO_SPECIAL(con);
252 }
253
254 /*
255 * samsung_gpio_setcfg_4bit - Samsung 4bit single register GPIO config.
256 * @chip: The gpio chip that is being configured.
257 * @off: The offset for the GPIO being configured.
258 * @cfg: The configuration value to set.
259 *
260 * This helper deal with the GPIO cases where the control register has 4 bits
261 * of control per GPIO, generally in the form of:
262 * 0000 = Input
263 * 0001 = Output
264 * others = Special functions (dependent on bank)
265 *
266 * Note, since the code to deal with the case where there are two control
267 * registers instead of one, we do not have a separate set of functions for
268 * each case.
269 */
270
271 static int samsung_gpio_setcfg_4bit(struct samsung_gpio_chip *chip,
272 unsigned int off, unsigned int cfg)
273 {
274 void __iomem *reg = chip->base;
275 unsigned int shift = (off & 7) * 4;
276 u32 con;
277
278 if (off < 8 && chip->chip.ngpio > 8)
279 reg -= 4;
280
281 if (samsung_gpio_is_cfg_special(cfg)) {
282 cfg &= 0xf;
283 cfg <<= shift;
284 }
285
286 con = __raw_readl(reg);
287 con &= ~(0xf << shift);
288 con |= cfg;
289 __raw_writel(con, reg);
290
291 return 0;
292 }
293
294 /*
295 * samsung_gpio_getcfg_4bit - Samsung 4bit single register GPIO config read.
296 * @chip: The gpio chip that is being configured.
297 * @off: The offset for the GPIO being configured.
298 *
299 * The reverse of samsung_gpio_setcfg_4bit(), turning a gpio configuration
300 * register setting into a value the software can use, such as could be passed
301 * to samsung_gpio_setcfg_4bit().
302 *
303 * @sa samsung_gpio_getcfg_2bit
304 */
305
306 static unsigned samsung_gpio_getcfg_4bit(struct samsung_gpio_chip *chip,
307 unsigned int off)
308 {
309 void __iomem *reg = chip->base;
310 unsigned int shift = (off & 7) * 4;
311 u32 con;
312
313 if (off < 8 && chip->chip.ngpio > 8)
314 reg -= 4;
315
316 con = __raw_readl(reg);
317 con >>= shift;
318 con &= 0xf;
319
320 /* this conversion works for IN and OUT as well as special mode */
321 return S3C_GPIO_SPECIAL(con);
322 }
323
324 #ifdef CONFIG_PLAT_S3C24XX
325 /*
326 * s3c24xx_gpio_setcfg_abank - S3C24XX style GPIO configuration (Bank A)
327 * @chip: The gpio chip that is being configured.
328 * @off: The offset for the GPIO being configured.
329 * @cfg: The configuration value to set.
330 *
331 * This helper deal with the GPIO cases where the control register
332 * has one bit of configuration for the gpio, where setting the bit
333 * means the pin is in special function mode and unset means output.
334 */
335
336 static int s3c24xx_gpio_setcfg_abank(struct samsung_gpio_chip *chip,
337 unsigned int off, unsigned int cfg)
338 {
339 void __iomem *reg = chip->base;
340 unsigned int shift = off;
341 u32 con;
342
343 if (samsung_gpio_is_cfg_special(cfg)) {
344 cfg &= 0xf;
345
346 /* Map output to 0, and SFN2 to 1 */
347 cfg -= 1;
348 if (cfg > 1)
349 return -EINVAL;
350
351 cfg <<= shift;
352 }
353
354 con = __raw_readl(reg);
355 con &= ~(0x1 << shift);
356 con |= cfg;
357 __raw_writel(con, reg);
358
359 return 0;
360 }
361
362 /*
363 * s3c24xx_gpio_getcfg_abank - S3C24XX style GPIO configuration read (Bank A)
364 * @chip: The gpio chip that is being configured.
365 * @off: The offset for the GPIO being configured.
366 *
367 * The reverse of s3c24xx_gpio_setcfg_abank() turning an GPIO into a usable
368 * GPIO configuration value.
369 *
370 * @sa samsung_gpio_getcfg_2bit
371 * @sa samsung_gpio_getcfg_4bit
372 */
373
374 static unsigned s3c24xx_gpio_getcfg_abank(struct samsung_gpio_chip *chip,
375 unsigned int off)
376 {
377 u32 con;
378
379 con = __raw_readl(chip->base);
380 con >>= off;
381 con &= 1;
382 con++;
383
384 return S3C_GPIO_SFN(con);
385 }
386 #endif
387
388 #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
389 static int s5p64x0_gpio_setcfg_rbank(struct samsung_gpio_chip *chip,
390 unsigned int off, unsigned int cfg)
391 {
392 void __iomem *reg = chip->base;
393 unsigned int shift;
394 u32 con;
395
396 switch (off) {
397 case 0:
398 case 1:
399 case 2:
400 case 3:
401 case 4:
402 case 5:
403 shift = (off & 7) * 4;
404 reg -= 4;
405 break;
406 case 6:
407 shift = ((off + 1) & 7) * 4;
408 reg -= 4;
409 default:
410 shift = ((off + 1) & 7) * 4;
411 break;
412 }
413
414 if (samsung_gpio_is_cfg_special(cfg)) {
415 cfg &= 0xf;
416 cfg <<= shift;
417 }
418
419 con = __raw_readl(reg);
420 con &= ~(0xf << shift);
421 con |= cfg;
422 __raw_writel(con, reg);
423
424 return 0;
425 }
426 #endif
427
428 static void __init samsung_gpiolib_set_cfg(struct samsung_gpio_cfg *chipcfg,
429 int nr_chips)
430 {
431 for (; nr_chips > 0; nr_chips--, chipcfg++) {
432 if (!chipcfg->set_config)
433 chipcfg->set_config = samsung_gpio_setcfg_4bit;
434 if (!chipcfg->get_config)
435 chipcfg->get_config = samsung_gpio_getcfg_4bit;
436 if (!chipcfg->set_pull)
437 chipcfg->set_pull = samsung_gpio_setpull_updown;
438 if (!chipcfg->get_pull)
439 chipcfg->get_pull = samsung_gpio_getpull_updown;
440 }
441 }
442
443 struct samsung_gpio_cfg s3c24xx_gpiocfg_default = {
444 .set_config = samsung_gpio_setcfg_2bit,
445 .get_config = samsung_gpio_getcfg_2bit,
446 };
447
448 #ifdef CONFIG_PLAT_S3C24XX
449 static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = {
450 .set_config = s3c24xx_gpio_setcfg_abank,
451 .get_config = s3c24xx_gpio_getcfg_abank,
452 };
453 #endif
454
455 static struct samsung_gpio_cfg exynos4_gpio_cfg = {
456 .set_pull = exynos4_gpio_setpull,
457 .get_pull = exynos4_gpio_getpull,
458 .set_config = samsung_gpio_setcfg_4bit,
459 .get_config = samsung_gpio_getcfg_4bit,
460 };
461
462 #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
463 static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = {
464 .cfg_eint = 0x3,
465 .set_config = s5p64x0_gpio_setcfg_rbank,
466 .get_config = samsung_gpio_getcfg_4bit,
467 .set_pull = samsung_gpio_setpull_updown,
468 .get_pull = samsung_gpio_getpull_updown,
469 };
470 #endif
471
472 static struct samsung_gpio_cfg samsung_gpio_cfgs[] = {
473 [0] = {
474 .cfg_eint = 0x0,
475 },
476 [1] = {
477 .cfg_eint = 0x3,
478 },
479 [2] = {
480 .cfg_eint = 0x7,
481 },
482 [3] = {
483 .cfg_eint = 0xF,
484 },
485 [4] = {
486 .cfg_eint = 0x0,
487 .set_config = samsung_gpio_setcfg_2bit,
488 .get_config = samsung_gpio_getcfg_2bit,
489 },
490 [5] = {
491 .cfg_eint = 0x2,
492 .set_config = samsung_gpio_setcfg_2bit,
493 .get_config = samsung_gpio_getcfg_2bit,
494 },
495 [6] = {
496 .cfg_eint = 0x3,
497 .set_config = samsung_gpio_setcfg_2bit,
498 .get_config = samsung_gpio_getcfg_2bit,
499 },
500 [7] = {
501 .set_config = samsung_gpio_setcfg_2bit,
502 .get_config = samsung_gpio_getcfg_2bit,
503 },
504 [8] = {
505 .set_pull = exynos4_gpio_setpull,
506 .get_pull = exynos4_gpio_getpull,
507 },
508 [9] = {
509 .cfg_eint = 0x3,
510 .set_pull = exynos4_gpio_setpull,
511 .get_pull = exynos4_gpio_getpull,
512 }
513 };
514
515 /*
516 * Default routines for controlling GPIO, based on the original S3C24XX
517 * GPIO functions which deal with the case where each gpio bank of the
518 * chip is as following:
519 *
520 * base + 0x00: Control register, 2 bits per gpio
521 * gpio n: 2 bits starting at (2*n)
522 * 00 = input, 01 = output, others mean special-function
523 * base + 0x04: Data register, 1 bit per gpio
524 * bit n: data bit n
525 */
526
527 static int samsung_gpiolib_2bit_input(struct gpio_chip *chip, unsigned offset)
528 {
529 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
530 void __iomem *base = ourchip->base;
531 unsigned long flags;
532 unsigned long con;
533
534 samsung_gpio_lock(ourchip, flags);
535
536 con = __raw_readl(base + 0x00);
537 con &= ~(3 << (offset * 2));
538
539 __raw_writel(con, base + 0x00);
540
541 samsung_gpio_unlock(ourchip, flags);
542 return 0;
543 }
544
545 static int samsung_gpiolib_2bit_output(struct gpio_chip *chip,
546 unsigned offset, int value)
547 {
548 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
549 void __iomem *base = ourchip->base;
550 unsigned long flags;
551 unsigned long dat;
552 unsigned long con;
553
554 samsung_gpio_lock(ourchip, flags);
555
556 dat = __raw_readl(base + 0x04);
557 dat &= ~(1 << offset);
558 if (value)
559 dat |= 1 << offset;
560 __raw_writel(dat, base + 0x04);
561
562 con = __raw_readl(base + 0x00);
563 con &= ~(3 << (offset * 2));
564 con |= 1 << (offset * 2);
565
566 __raw_writel(con, base + 0x00);
567 __raw_writel(dat, base + 0x04);
568
569 samsung_gpio_unlock(ourchip, flags);
570 return 0;
571 }
572
573 /*
574 * The samsung_gpiolib_4bit routines are to control the gpio banks where
575 * the gpio configuration register (GPxCON) has 4 bits per GPIO, as the
576 * following example:
577 *
578 * base + 0x00: Control register, 4 bits per gpio
579 * gpio n: 4 bits starting at (4*n)
580 * 0000 = input, 0001 = output, others mean special-function
581 * base + 0x04: Data register, 1 bit per gpio
582 * bit n: data bit n
583 *
584 * Note, since the data register is one bit per gpio and is at base + 0x4
585 * we can use samsung_gpiolib_get and samsung_gpiolib_set to change the
586 * state of the output.
587 */
588
589 static int samsung_gpiolib_4bit_input(struct gpio_chip *chip,
590 unsigned int offset)
591 {
592 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
593 void __iomem *base = ourchip->base;
594 unsigned long con;
595
596 con = __raw_readl(base + GPIOCON_OFF);
597 con &= ~(0xf << con_4bit_shift(offset));
598 __raw_writel(con, base + GPIOCON_OFF);
599
600 gpio_dbg("%s: %p: CON now %08lx\n", __func__, base, con);
601
602 return 0;
603 }
604
605 static int samsung_gpiolib_4bit_output(struct gpio_chip *chip,
606 unsigned int offset, int value)
607 {
608 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
609 void __iomem *base = ourchip->base;
610 unsigned long con;
611 unsigned long dat;
612
613 con = __raw_readl(base + GPIOCON_OFF);
614 con &= ~(0xf << con_4bit_shift(offset));
615 con |= 0x1 << con_4bit_shift(offset);
616
617 dat = __raw_readl(base + GPIODAT_OFF);
618
619 if (value)
620 dat |= 1 << offset;
621 else
622 dat &= ~(1 << offset);
623
624 __raw_writel(dat, base + GPIODAT_OFF);
625 __raw_writel(con, base + GPIOCON_OFF);
626 __raw_writel(dat, base + GPIODAT_OFF);
627
628 gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
629
630 return 0;
631 }
632
633 /*
634 * The next set of routines are for the case where the GPIO configuration
635 * registers are 4 bits per GPIO but there is more than one register (the
636 * bank has more than 8 GPIOs.
637 *
638 * This case is the similar to the 4 bit case, but the registers are as
639 * follows:
640 *
641 * base + 0x00: Control register, 4 bits per gpio (lower 8 GPIOs)
642 * gpio n: 4 bits starting at (4*n)
643 * 0000 = input, 0001 = output, others mean special-function
644 * base + 0x04: Control register, 4 bits per gpio (up to 8 additions GPIOs)
645 * gpio n: 4 bits starting at (4*n)
646 * 0000 = input, 0001 = output, others mean special-function
647 * base + 0x08: Data register, 1 bit per gpio
648 * bit n: data bit n
649 *
650 * To allow us to use the samsung_gpiolib_get and samsung_gpiolib_set
651 * routines we store the 'base + 0x4' address so that these routines see
652 * the data register at ourchip->base + 0x04.
653 */
654
655 static int samsung_gpiolib_4bit2_input(struct gpio_chip *chip,
656 unsigned int offset)
657 {
658 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
659 void __iomem *base = ourchip->base;
660 void __iomem *regcon = base;
661 unsigned long con;
662
663 if (offset > 7)
664 offset -= 8;
665 else
666 regcon -= 4;
667
668 con = __raw_readl(regcon);
669 con &= ~(0xf << con_4bit_shift(offset));
670 __raw_writel(con, regcon);
671
672 gpio_dbg("%s: %p: CON %08lx\n", __func__, base, con);
673
674 return 0;
675 }
676
677 static int samsung_gpiolib_4bit2_output(struct gpio_chip *chip,
678 unsigned int offset, int value)
679 {
680 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
681 void __iomem *base = ourchip->base;
682 void __iomem *regcon = base;
683 unsigned long con;
684 unsigned long dat;
685 unsigned con_offset = offset;
686
687 if (con_offset > 7)
688 con_offset -= 8;
689 else
690 regcon -= 4;
691
692 con = __raw_readl(regcon);
693 con &= ~(0xf << con_4bit_shift(con_offset));
694 con |= 0x1 << con_4bit_shift(con_offset);
695
696 dat = __raw_readl(base + GPIODAT_OFF);
697
698 if (value)
699 dat |= 1 << offset;
700 else
701 dat &= ~(1 << offset);
702
703 __raw_writel(dat, base + GPIODAT_OFF);
704 __raw_writel(con, regcon);
705 __raw_writel(dat, base + GPIODAT_OFF);
706
707 gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
708
709 return 0;
710 }
711
712 #ifdef CONFIG_PLAT_S3C24XX
713 /* The next set of routines are for the case of s3c24xx bank a */
714
715 static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
716 {
717 return -EINVAL;
718 }
719
720 static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
721 unsigned offset, int value)
722 {
723 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
724 void __iomem *base = ourchip->base;
725 unsigned long flags;
726 unsigned long dat;
727 unsigned long con;
728
729 local_irq_save(flags);
730
731 con = __raw_readl(base + 0x00);
732 dat = __raw_readl(base + 0x04);
733
734 dat &= ~(1 << offset);
735 if (value)
736 dat |= 1 << offset;
737
738 __raw_writel(dat, base + 0x04);
739
740 con &= ~(1 << offset);
741
742 __raw_writel(con, base + 0x00);
743 __raw_writel(dat, base + 0x04);
744
745 local_irq_restore(flags);
746 return 0;
747 }
748 #endif
749
750 /* The next set of routines are for the case of s5p64x0 bank r */
751
752 static int s5p64x0_gpiolib_rbank_input(struct gpio_chip *chip,
753 unsigned int offset)
754 {
755 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
756 void __iomem *base = ourchip->base;
757 void __iomem *regcon = base;
758 unsigned long con;
759 unsigned long flags;
760
761 switch (offset) {
762 case 6:
763 offset += 1;
764 case 0:
765 case 1:
766 case 2:
767 case 3:
768 case 4:
769 case 5:
770 regcon -= 4;
771 break;
772 default:
773 offset -= 7;
774 break;
775 }
776
777 samsung_gpio_lock(ourchip, flags);
778
779 con = __raw_readl(regcon);
780 con &= ~(0xf << con_4bit_shift(offset));
781 __raw_writel(con, regcon);
782
783 samsung_gpio_unlock(ourchip, flags);
784
785 return 0;
786 }
787
788 static int s5p64x0_gpiolib_rbank_output(struct gpio_chip *chip,
789 unsigned int offset, int value)
790 {
791 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
792 void __iomem *base = ourchip->base;
793 void __iomem *regcon = base;
794 unsigned long con;
795 unsigned long dat;
796 unsigned long flags;
797 unsigned con_offset = offset;
798
799 switch (con_offset) {
800 case 6:
801 con_offset += 1;
802 case 0:
803 case 1:
804 case 2:
805 case 3:
806 case 4:
807 case 5:
808 regcon -= 4;
809 break;
810 default:
811 con_offset -= 7;
812 break;
813 }
814
815 samsung_gpio_lock(ourchip, flags);
816
817 con = __raw_readl(regcon);
818 con &= ~(0xf << con_4bit_shift(con_offset));
819 con |= 0x1 << con_4bit_shift(con_offset);
820
821 dat = __raw_readl(base + GPIODAT_OFF);
822 if (value)
823 dat |= 1 << offset;
824 else
825 dat &= ~(1 << offset);
826
827 __raw_writel(con, regcon);
828 __raw_writel(dat, base + GPIODAT_OFF);
829
830 samsung_gpio_unlock(ourchip, flags);
831
832 return 0;
833 }
834
835 static void samsung_gpiolib_set(struct gpio_chip *chip,
836 unsigned offset, int value)
837 {
838 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
839 void __iomem *base = ourchip->base;
840 unsigned long flags;
841 unsigned long dat;
842
843 samsung_gpio_lock(ourchip, flags);
844
845 dat = __raw_readl(base + 0x04);
846 dat &= ~(1 << offset);
847 if (value)
848 dat |= 1 << offset;
849 __raw_writel(dat, base + 0x04);
850
851 samsung_gpio_unlock(ourchip, flags);
852 }
853
854 static int samsung_gpiolib_get(struct gpio_chip *chip, unsigned offset)
855 {
856 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
857 unsigned long val;
858
859 val = __raw_readl(ourchip->base + 0x04);
860 val >>= offset;
861 val &= 1;
862
863 return val;
864 }
865
866 /*
867 * CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios
868 * for use with the configuration calls, and other parts of the s3c gpiolib
869 * support code.
870 *
871 * Not all s3c support code will need this, as some configurations of cpu
872 * may only support one or two different configuration options and have an
873 * easy gpio to samsung_gpio_chip mapping function. If this is the case, then
874 * the machine support file should provide its own samsung_gpiolib_getchip()
875 * and any other necessary functions.
876 */
877
878 #ifdef CONFIG_S3C_GPIO_TRACK
879 struct samsung_gpio_chip *s3c_gpios[S3C_GPIO_END];
880
881 static __init void s3c_gpiolib_track(struct samsung_gpio_chip *chip)
882 {
883 unsigned int gpn;
884 int i;
885
886 gpn = chip->chip.base;
887 for (i = 0; i < chip->chip.ngpio; i++, gpn++) {
888 BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios));
889 s3c_gpios[gpn] = chip;
890 }
891 }
892 #endif /* CONFIG_S3C_GPIO_TRACK */
893
894 /*
895 * samsung_gpiolib_add() - add the Samsung gpio_chip.
896 * @chip: The chip to register
897 *
898 * This is a wrapper to gpiochip_add() that takes our specific gpio chip
899 * information and makes the necessary alterations for the platform and
900 * notes the information for use with the configuration systems and any
901 * other parts of the system.
902 */
903
904 static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip)
905 {
906 struct gpio_chip *gc = &chip->chip;
907 int ret;
908
909 BUG_ON(!chip->base);
910 BUG_ON(!gc->label);
911 BUG_ON(!gc->ngpio);
912
913 spin_lock_init(&chip->lock);
914
915 if (!gc->direction_input)
916 gc->direction_input = samsung_gpiolib_2bit_input;
917 if (!gc->direction_output)
918 gc->direction_output = samsung_gpiolib_2bit_output;
919 if (!gc->set)
920 gc->set = samsung_gpiolib_set;
921 if (!gc->get)
922 gc->get = samsung_gpiolib_get;
923
924 #ifdef CONFIG_PM
925 if (chip->pm != NULL) {
926 if (!chip->pm->save || !chip->pm->resume)
927 printk(KERN_ERR "gpio: %s has missing PM functions\n",
928 gc->label);
929 } else
930 printk(KERN_ERR "gpio: %s has no PM function\n", gc->label);
931 #endif
932
933 /* gpiochip_add() prints own failure message on error. */
934 ret = gpiochip_add(gc);
935 if (ret >= 0)
936 s3c_gpiolib_track(chip);
937 }
938
939 static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
940 int nr_chips, void __iomem *base)
941 {
942 int i;
943 struct gpio_chip *gc = &chip->chip;
944
945 for (i = 0 ; i < nr_chips; i++, chip++) {
946 /* skip banks not present on SoC */
947 if (chip->chip.base >= S3C_GPIO_END)
948 continue;
949
950 if (!chip->config)
951 chip->config = &s3c24xx_gpiocfg_default;
952 if (!chip->pm)
953 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
954 if ((base != NULL) && (chip->base == NULL))
955 chip->base = base + ((i) * 0x10);
956
957 if (!gc->direction_input)
958 gc->direction_input = samsung_gpiolib_2bit_input;
959 if (!gc->direction_output)
960 gc->direction_output = samsung_gpiolib_2bit_output;
961
962 samsung_gpiolib_add(chip);
963 }
964 }
965
966 static void __init samsung_gpiolib_add_2bit_chips(struct samsung_gpio_chip *chip,
967 int nr_chips, void __iomem *base,
968 unsigned int offset)
969 {
970 int i;
971
972 for (i = 0 ; i < nr_chips; i++, chip++) {
973 chip->chip.direction_input = samsung_gpiolib_2bit_input;
974 chip->chip.direction_output = samsung_gpiolib_2bit_output;
975
976 if (!chip->config)
977 chip->config = &samsung_gpio_cfgs[7];
978 if (!chip->pm)
979 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
980 if ((base != NULL) && (chip->base == NULL))
981 chip->base = base + ((i) * offset);
982
983 samsung_gpiolib_add(chip);
984 }
985 }
986
987 /*
988 * samsung_gpiolib_add_4bit_chips - 4bit single register GPIO config.
989 * @chip: The gpio chip that is being configured.
990 * @nr_chips: The no of chips (gpio ports) for the GPIO being configured.
991 *
992 * This helper deal with the GPIO cases where the control register has 4 bits
993 * of control per GPIO, generally in the form of:
994 * 0000 = Input
995 * 0001 = Output
996 * others = Special functions (dependent on bank)
997 *
998 * Note, since the code to deal with the case where there are two control
999 * registers instead of one, we do not have a separate set of function
1000 * (samsung_gpiolib_add_4bit2_chips)for each case.
1001 */
1002
1003 static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip,
1004 int nr_chips, void __iomem *base)
1005 {
1006 int i;
1007
1008 for (i = 0 ; i < nr_chips; i++, chip++) {
1009 chip->chip.direction_input = samsung_gpiolib_4bit_input;
1010 chip->chip.direction_output = samsung_gpiolib_4bit_output;
1011
1012 if (!chip->config)
1013 chip->config = &samsung_gpio_cfgs[2];
1014 if (!chip->pm)
1015 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1016 if ((base != NULL) && (chip->base == NULL))
1017 chip->base = base + ((i) * 0x20);
1018
1019 samsung_gpiolib_add(chip);
1020 }
1021 }
1022
1023 static void __init samsung_gpiolib_add_4bit2_chips(struct samsung_gpio_chip *chip,
1024 int nr_chips)
1025 {
1026 for (; nr_chips > 0; nr_chips--, chip++) {
1027 chip->chip.direction_input = samsung_gpiolib_4bit2_input;
1028 chip->chip.direction_output = samsung_gpiolib_4bit2_output;
1029
1030 if (!chip->config)
1031 chip->config = &samsung_gpio_cfgs[2];
1032 if (!chip->pm)
1033 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1034
1035 samsung_gpiolib_add(chip);
1036 }
1037 }
1038
1039 static void __init s5p64x0_gpiolib_add_rbank(struct samsung_gpio_chip *chip,
1040 int nr_chips)
1041 {
1042 for (; nr_chips > 0; nr_chips--, chip++) {
1043 chip->chip.direction_input = s5p64x0_gpiolib_rbank_input;
1044 chip->chip.direction_output = s5p64x0_gpiolib_rbank_output;
1045
1046 if (!chip->pm)
1047 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1048
1049 samsung_gpiolib_add(chip);
1050 }
1051 }
1052
1053 int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
1054 {
1055 struct samsung_gpio_chip *samsung_chip = container_of(chip, struct samsung_gpio_chip, chip);
1056
1057 return samsung_chip->irq_base + offset;
1058 }
1059
1060 #ifdef CONFIG_PLAT_S3C24XX
1061 static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
1062 {
1063 if (offset < 4)
1064 return IRQ_EINT0 + offset;
1065
1066 if (offset < 8)
1067 return IRQ_EINT4 + offset - 4;
1068
1069 return -EINVAL;
1070 }
1071 #endif
1072
1073 #ifdef CONFIG_PLAT_S3C64XX
1074 static int s3c64xx_gpiolib_mbank_to_irq(struct gpio_chip *chip, unsigned pin)
1075 {
1076 return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
1077 }
1078
1079 static int s3c64xx_gpiolib_lbank_to_irq(struct gpio_chip *chip, unsigned pin)
1080 {
1081 return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
1082 }
1083 #endif
1084
1085 struct samsung_gpio_chip s3c24xx_gpios[] = {
1086 #ifdef CONFIG_PLAT_S3C24XX
1087 {
1088 .config = &s3c24xx_gpiocfg_banka,
1089 .chip = {
1090 .base = S3C2410_GPA(0),
1091 .owner = THIS_MODULE,
1092 .label = "GPIOA",
1093 .ngpio = 24,
1094 .direction_input = s3c24xx_gpiolib_banka_input,
1095 .direction_output = s3c24xx_gpiolib_banka_output,
1096 },
1097 }, {
1098 .chip = {
1099 .base = S3C2410_GPB(0),
1100 .owner = THIS_MODULE,
1101 .label = "GPIOB",
1102 .ngpio = 16,
1103 },
1104 }, {
1105 .chip = {
1106 .base = S3C2410_GPC(0),
1107 .owner = THIS_MODULE,
1108 .label = "GPIOC",
1109 .ngpio = 16,
1110 },
1111 }, {
1112 .chip = {
1113 .base = S3C2410_GPD(0),
1114 .owner = THIS_MODULE,
1115 .label = "GPIOD",
1116 .ngpio = 16,
1117 },
1118 }, {
1119 .chip = {
1120 .base = S3C2410_GPE(0),
1121 .label = "GPIOE",
1122 .owner = THIS_MODULE,
1123 .ngpio = 16,
1124 },
1125 }, {
1126 .chip = {
1127 .base = S3C2410_GPF(0),
1128 .owner = THIS_MODULE,
1129 .label = "GPIOF",
1130 .ngpio = 8,
1131 .to_irq = s3c24xx_gpiolib_fbank_to_irq,
1132 },
1133 }, {
1134 .irq_base = IRQ_EINT8,
1135 .chip = {
1136 .base = S3C2410_GPG(0),
1137 .owner = THIS_MODULE,
1138 .label = "GPIOG",
1139 .ngpio = 16,
1140 .to_irq = samsung_gpiolib_to_irq,
1141 },
1142 }, {
1143 .chip = {
1144 .base = S3C2410_GPH(0),
1145 .owner = THIS_MODULE,
1146 .label = "GPIOH",
1147 .ngpio = 11,
1148 },
1149 },
1150 /* GPIOS for the S3C2443 and later devices. */
1151 {
1152 .base = S3C2440_GPJCON,
1153 .chip = {
1154 .base = S3C2410_GPJ(0),
1155 .owner = THIS_MODULE,
1156 .label = "GPIOJ",
1157 .ngpio = 16,
1158 },
1159 }, {
1160 .base = S3C2443_GPKCON,
1161 .chip = {
1162 .base = S3C2410_GPK(0),
1163 .owner = THIS_MODULE,
1164 .label = "GPIOK",
1165 .ngpio = 16,
1166 },
1167 }, {
1168 .base = S3C2443_GPLCON,
1169 .chip = {
1170 .base = S3C2410_GPL(0),
1171 .owner = THIS_MODULE,
1172 .label = "GPIOL",
1173 .ngpio = 15,
1174 },
1175 }, {
1176 .base = S3C2443_GPMCON,
1177 .chip = {
1178 .base = S3C2410_GPM(0),
1179 .owner = THIS_MODULE,
1180 .label = "GPIOM",
1181 .ngpio = 2,
1182 },
1183 },
1184 #endif
1185 };
1186
1187 /*
1188 * GPIO bank summary:
1189 *
1190 * Bank GPIOs Style SlpCon ExtInt Group
1191 * A 8 4Bit Yes 1
1192 * B 7 4Bit Yes 1
1193 * C 8 4Bit Yes 2
1194 * D 5 4Bit Yes 3
1195 * E 5 4Bit Yes None
1196 * F 16 2Bit Yes 4 [1]
1197 * G 7 4Bit Yes 5
1198 * H 10 4Bit[2] Yes 6
1199 * I 16 2Bit Yes None
1200 * J 12 2Bit Yes None
1201 * K 16 4Bit[2] No None
1202 * L 15 4Bit[2] No None
1203 * M 6 4Bit No IRQ_EINT
1204 * N 16 2Bit No IRQ_EINT
1205 * O 16 2Bit Yes 7
1206 * P 15 2Bit Yes 8
1207 * Q 9 2Bit Yes 9
1208 *
1209 * [1] BANKF pins 14,15 do not form part of the external interrupt sources
1210 * [2] BANK has two control registers, GPxCON0 and GPxCON1
1211 */
1212
1213 static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = {
1214 #ifdef CONFIG_PLAT_S3C64XX
1215 {
1216 .chip = {
1217 .base = S3C64XX_GPA(0),
1218 .ngpio = S3C64XX_GPIO_A_NR,
1219 .label = "GPA",
1220 },
1221 }, {
1222 .chip = {
1223 .base = S3C64XX_GPB(0),
1224 .ngpio = S3C64XX_GPIO_B_NR,
1225 .label = "GPB",
1226 },
1227 }, {
1228 .chip = {
1229 .base = S3C64XX_GPC(0),
1230 .ngpio = S3C64XX_GPIO_C_NR,
1231 .label = "GPC",
1232 },
1233 }, {
1234 .chip = {
1235 .base = S3C64XX_GPD(0),
1236 .ngpio = S3C64XX_GPIO_D_NR,
1237 .label = "GPD",
1238 },
1239 }, {
1240 .config = &samsung_gpio_cfgs[0],
1241 .chip = {
1242 .base = S3C64XX_GPE(0),
1243 .ngpio = S3C64XX_GPIO_E_NR,
1244 .label = "GPE",
1245 },
1246 }, {
1247 .base = S3C64XX_GPG_BASE,
1248 .chip = {
1249 .base = S3C64XX_GPG(0),
1250 .ngpio = S3C64XX_GPIO_G_NR,
1251 .label = "GPG",
1252 },
1253 }, {
1254 .base = S3C64XX_GPM_BASE,
1255 .config = &samsung_gpio_cfgs[1],
1256 .chip = {
1257 .base = S3C64XX_GPM(0),
1258 .ngpio = S3C64XX_GPIO_M_NR,
1259 .label = "GPM",
1260 .to_irq = s3c64xx_gpiolib_mbank_to_irq,
1261 },
1262 },
1263 #endif
1264 };
1265
1266 static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = {
1267 #ifdef CONFIG_PLAT_S3C64XX
1268 {
1269 .base = S3C64XX_GPH_BASE + 0x4,
1270 .chip = {
1271 .base = S3C64XX_GPH(0),
1272 .ngpio = S3C64XX_GPIO_H_NR,
1273 .label = "GPH",
1274 },
1275 }, {
1276 .base = S3C64XX_GPK_BASE + 0x4,
1277 .config = &samsung_gpio_cfgs[0],
1278 .chip = {
1279 .base = S3C64XX_GPK(0),
1280 .ngpio = S3C64XX_GPIO_K_NR,
1281 .label = "GPK",
1282 },
1283 }, {
1284 .base = S3C64XX_GPL_BASE + 0x4,
1285 .config = &samsung_gpio_cfgs[1],
1286 .chip = {
1287 .base = S3C64XX_GPL(0),
1288 .ngpio = S3C64XX_GPIO_L_NR,
1289 .label = "GPL",
1290 .to_irq = s3c64xx_gpiolib_lbank_to_irq,
1291 },
1292 },
1293 #endif
1294 };
1295
1296 static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = {
1297 #ifdef CONFIG_PLAT_S3C64XX
1298 {
1299 .base = S3C64XX_GPF_BASE,
1300 .config = &samsung_gpio_cfgs[6],
1301 .chip = {
1302 .base = S3C64XX_GPF(0),
1303 .ngpio = S3C64XX_GPIO_F_NR,
1304 .label = "GPF",
1305 },
1306 }, {
1307 .config = &samsung_gpio_cfgs[7],
1308 .chip = {
1309 .base = S3C64XX_GPI(0),
1310 .ngpio = S3C64XX_GPIO_I_NR,
1311 .label = "GPI",
1312 },
1313 }, {
1314 .config = &samsung_gpio_cfgs[7],
1315 .chip = {
1316 .base = S3C64XX_GPJ(0),
1317 .ngpio = S3C64XX_GPIO_J_NR,
1318 .label = "GPJ",
1319 },
1320 }, {
1321 .config = &samsung_gpio_cfgs[6],
1322 .chip = {
1323 .base = S3C64XX_GPO(0),
1324 .ngpio = S3C64XX_GPIO_O_NR,
1325 .label = "GPO",
1326 },
1327 }, {
1328 .config = &samsung_gpio_cfgs[6],
1329 .chip = {
1330 .base = S3C64XX_GPP(0),
1331 .ngpio = S3C64XX_GPIO_P_NR,
1332 .label = "GPP",
1333 },
1334 }, {
1335 .config = &samsung_gpio_cfgs[6],
1336 .chip = {
1337 .base = S3C64XX_GPQ(0),
1338 .ngpio = S3C64XX_GPIO_Q_NR,
1339 .label = "GPQ",
1340 },
1341 }, {
1342 .base = S3C64XX_GPN_BASE,
1343 .irq_base = IRQ_EINT(0),
1344 .config = &samsung_gpio_cfgs[5],
1345 .chip = {
1346 .base = S3C64XX_GPN(0),
1347 .ngpio = S3C64XX_GPIO_N_NR,
1348 .label = "GPN",
1349 .to_irq = samsung_gpiolib_to_irq,
1350 },
1351 },
1352 #endif
1353 };
1354
1355 /*
1356 * S5P6440 GPIO bank summary:
1357 *
1358 * Bank GPIOs Style SlpCon ExtInt Group
1359 * A 6 4Bit Yes 1
1360 * B 7 4Bit Yes 1
1361 * C 8 4Bit Yes 2
1362 * F 2 2Bit Yes 4 [1]
1363 * G 7 4Bit Yes 5
1364 * H 10 4Bit[2] Yes 6
1365 * I 16 2Bit Yes None
1366 * J 12 2Bit Yes None
1367 * N 16 2Bit No IRQ_EINT
1368 * P 8 2Bit Yes 8
1369 * R 15 4Bit[2] Yes 8
1370 */
1371
1372 static struct samsung_gpio_chip s5p6440_gpios_4bit[] = {
1373 #ifdef CONFIG_CPU_S5P6440
1374 {
1375 .chip = {
1376 .base = S5P6440_GPA(0),
1377 .ngpio = S5P6440_GPIO_A_NR,
1378 .label = "GPA",
1379 },
1380 }, {
1381 .chip = {
1382 .base = S5P6440_GPB(0),
1383 .ngpio = S5P6440_GPIO_B_NR,
1384 .label = "GPB",
1385 },
1386 }, {
1387 .chip = {
1388 .base = S5P6440_GPC(0),
1389 .ngpio = S5P6440_GPIO_C_NR,
1390 .label = "GPC",
1391 },
1392 }, {
1393 .base = S5P64X0_GPG_BASE,
1394 .chip = {
1395 .base = S5P6440_GPG(0),
1396 .ngpio = S5P6440_GPIO_G_NR,
1397 .label = "GPG",
1398 },
1399 },
1400 #endif
1401 };
1402
1403 static struct samsung_gpio_chip s5p6440_gpios_4bit2[] = {
1404 #ifdef CONFIG_CPU_S5P6440
1405 {
1406 .base = S5P64X0_GPH_BASE + 0x4,
1407 .chip = {
1408 .base = S5P6440_GPH(0),
1409 .ngpio = S5P6440_GPIO_H_NR,
1410 .label = "GPH",
1411 },
1412 },
1413 #endif
1414 };
1415
1416 static struct samsung_gpio_chip s5p6440_gpios_rbank[] = {
1417 #ifdef CONFIG_CPU_S5P6440
1418 {
1419 .base = S5P64X0_GPR_BASE + 0x4,
1420 .config = &s5p64x0_gpio_cfg_rbank,
1421 .chip = {
1422 .base = S5P6440_GPR(0),
1423 .ngpio = S5P6440_GPIO_R_NR,
1424 .label = "GPR",
1425 },
1426 },
1427 #endif
1428 };
1429
1430 static struct samsung_gpio_chip s5p6440_gpios_2bit[] = {
1431 #ifdef CONFIG_CPU_S5P6440
1432 {
1433 .base = S5P64X0_GPF_BASE,
1434 .config = &samsung_gpio_cfgs[6],
1435 .chip = {
1436 .base = S5P6440_GPF(0),
1437 .ngpio = S5P6440_GPIO_F_NR,
1438 .label = "GPF",
1439 },
1440 }, {
1441 .base = S5P64X0_GPI_BASE,
1442 .config = &samsung_gpio_cfgs[4],
1443 .chip = {
1444 .base = S5P6440_GPI(0),
1445 .ngpio = S5P6440_GPIO_I_NR,
1446 .label = "GPI",
1447 },
1448 }, {
1449 .base = S5P64X0_GPJ_BASE,
1450 .config = &samsung_gpio_cfgs[4],
1451 .chip = {
1452 .base = S5P6440_GPJ(0),
1453 .ngpio = S5P6440_GPIO_J_NR,
1454 .label = "GPJ",
1455 },
1456 }, {
1457 .base = S5P64X0_GPN_BASE,
1458 .config = &samsung_gpio_cfgs[5],
1459 .chip = {
1460 .base = S5P6440_GPN(0),
1461 .ngpio = S5P6440_GPIO_N_NR,
1462 .label = "GPN",
1463 },
1464 }, {
1465 .base = S5P64X0_GPP_BASE,
1466 .config = &samsung_gpio_cfgs[6],
1467 .chip = {
1468 .base = S5P6440_GPP(0),
1469 .ngpio = S5P6440_GPIO_P_NR,
1470 .label = "GPP",
1471 },
1472 },
1473 #endif
1474 };
1475
1476 /*
1477 * S5P6450 GPIO bank summary:
1478 *
1479 * Bank GPIOs Style SlpCon ExtInt Group
1480 * A 6 4Bit Yes 1
1481 * B 7 4Bit Yes 1
1482 * C 8 4Bit Yes 2
1483 * D 8 4Bit Yes None
1484 * F 2 2Bit Yes None
1485 * G 14 4Bit[2] Yes 5
1486 * H 10 4Bit[2] Yes 6
1487 * I 16 2Bit Yes None
1488 * J 12 2Bit Yes None
1489 * K 5 4Bit Yes None
1490 * N 16 2Bit No IRQ_EINT
1491 * P 11 2Bit Yes 8
1492 * Q 14 2Bit Yes None
1493 * R 15 4Bit[2] Yes None
1494 * S 8 2Bit Yes None
1495 *
1496 * [1] BANKF pins 14,15 do not form part of the external interrupt sources
1497 * [2] BANK has two control registers, GPxCON0 and GPxCON1
1498 */
1499
1500 static struct samsung_gpio_chip s5p6450_gpios_4bit[] = {
1501 #ifdef CONFIG_CPU_S5P6450
1502 {
1503 .chip = {
1504 .base = S5P6450_GPA(0),
1505 .ngpio = S5P6450_GPIO_A_NR,
1506 .label = "GPA",
1507 },
1508 }, {
1509 .chip = {
1510 .base = S5P6450_GPB(0),
1511 .ngpio = S5P6450_GPIO_B_NR,
1512 .label = "GPB",
1513 },
1514 }, {
1515 .chip = {
1516 .base = S5P6450_GPC(0),
1517 .ngpio = S5P6450_GPIO_C_NR,
1518 .label = "GPC",
1519 },
1520 }, {
1521 .chip = {
1522 .base = S5P6450_GPD(0),
1523 .ngpio = S5P6450_GPIO_D_NR,
1524 .label = "GPD",
1525 },
1526 }, {
1527 .base = S5P6450_GPK_BASE,
1528 .chip = {
1529 .base = S5P6450_GPK(0),
1530 .ngpio = S5P6450_GPIO_K_NR,
1531 .label = "GPK",
1532 },
1533 },
1534 #endif
1535 };
1536
1537 static struct samsung_gpio_chip s5p6450_gpios_4bit2[] = {
1538 #ifdef CONFIG_CPU_S5P6450
1539 {
1540 .base = S5P64X0_GPG_BASE + 0x4,
1541 .chip = {
1542 .base = S5P6450_GPG(0),
1543 .ngpio = S5P6450_GPIO_G_NR,
1544 .label = "GPG",
1545 },
1546 }, {
1547 .base = S5P64X0_GPH_BASE + 0x4,
1548 .chip = {
1549 .base = S5P6450_GPH(0),
1550 .ngpio = S5P6450_GPIO_H_NR,
1551 .label = "GPH",
1552 },
1553 },
1554 #endif
1555 };
1556
1557 static struct samsung_gpio_chip s5p6450_gpios_rbank[] = {
1558 #ifdef CONFIG_CPU_S5P6450
1559 {
1560 .base = S5P64X0_GPR_BASE + 0x4,
1561 .config = &s5p64x0_gpio_cfg_rbank,
1562 .chip = {
1563 .base = S5P6450_GPR(0),
1564 .ngpio = S5P6450_GPIO_R_NR,
1565 .label = "GPR",
1566 },
1567 },
1568 #endif
1569 };
1570
1571 static struct samsung_gpio_chip s5p6450_gpios_2bit[] = {
1572 #ifdef CONFIG_CPU_S5P6450
1573 {
1574 .base = S5P64X0_GPF_BASE,
1575 .config = &samsung_gpio_cfgs[6],
1576 .chip = {
1577 .base = S5P6450_GPF(0),
1578 .ngpio = S5P6450_GPIO_F_NR,
1579 .label = "GPF",
1580 },
1581 }, {
1582 .base = S5P64X0_GPI_BASE,
1583 .config = &samsung_gpio_cfgs[4],
1584 .chip = {
1585 .base = S5P6450_GPI(0),
1586 .ngpio = S5P6450_GPIO_I_NR,
1587 .label = "GPI",
1588 },
1589 }, {
1590 .base = S5P64X0_GPJ_BASE,
1591 .config = &samsung_gpio_cfgs[4],
1592 .chip = {
1593 .base = S5P6450_GPJ(0),
1594 .ngpio = S5P6450_GPIO_J_NR,
1595 .label = "GPJ",
1596 },
1597 }, {
1598 .base = S5P64X0_GPN_BASE,
1599 .config = &samsung_gpio_cfgs[5],
1600 .chip = {
1601 .base = S5P6450_GPN(0),
1602 .ngpio = S5P6450_GPIO_N_NR,
1603 .label = "GPN",
1604 },
1605 }, {
1606 .base = S5P64X0_GPP_BASE,
1607 .config = &samsung_gpio_cfgs[6],
1608 .chip = {
1609 .base = S5P6450_GPP(0),
1610 .ngpio = S5P6450_GPIO_P_NR,
1611 .label = "GPP",
1612 },
1613 }, {
1614 .base = S5P6450_GPQ_BASE,
1615 .config = &samsung_gpio_cfgs[5],
1616 .chip = {
1617 .base = S5P6450_GPQ(0),
1618 .ngpio = S5P6450_GPIO_Q_NR,
1619 .label = "GPQ",
1620 },
1621 }, {
1622 .base = S5P6450_GPS_BASE,
1623 .config = &samsung_gpio_cfgs[6],
1624 .chip = {
1625 .base = S5P6450_GPS(0),
1626 .ngpio = S5P6450_GPIO_S_NR,
1627 .label = "GPS",
1628 },
1629 },
1630 #endif
1631 };
1632
1633 /*
1634 * S5PC100 GPIO bank summary:
1635 *
1636 * Bank GPIOs Style INT Type
1637 * A0 8 4Bit GPIO_INT0
1638 * A1 5 4Bit GPIO_INT1
1639 * B 8 4Bit GPIO_INT2
1640 * C 5 4Bit GPIO_INT3
1641 * D 7 4Bit GPIO_INT4
1642 * E0 8 4Bit GPIO_INT5
1643 * E1 6 4Bit GPIO_INT6
1644 * F0 8 4Bit GPIO_INT7
1645 * F1 8 4Bit GPIO_INT8
1646 * F2 8 4Bit GPIO_INT9
1647 * F3 4 4Bit GPIO_INT10
1648 * G0 8 4Bit GPIO_INT11
1649 * G1 3 4Bit GPIO_INT12
1650 * G2 7 4Bit GPIO_INT13
1651 * G3 7 4Bit GPIO_INT14
1652 * H0 8 4Bit WKUP_INT
1653 * H1 8 4Bit WKUP_INT
1654 * H2 8 4Bit WKUP_INT
1655 * H3 8 4Bit WKUP_INT
1656 * I 8 4Bit GPIO_INT15
1657 * J0 8 4Bit GPIO_INT16
1658 * J1 5 4Bit GPIO_INT17
1659 * J2 8 4Bit GPIO_INT18
1660 * J3 8 4Bit GPIO_INT19
1661 * J4 4 4Bit GPIO_INT20
1662 * K0 8 4Bit None
1663 * K1 6 4Bit None
1664 * K2 8 4Bit None
1665 * K3 8 4Bit None
1666 * L0 8 4Bit None
1667 * L1 8 4Bit None
1668 * L2 8 4Bit None
1669 * L3 8 4Bit None
1670 */
1671
1672 static struct samsung_gpio_chip s5pc100_gpios_4bit[] = {
1673 #ifdef CONFIG_CPU_S5PC100
1674 {
1675 .chip = {
1676 .base = S5PC100_GPA0(0),
1677 .ngpio = S5PC100_GPIO_A0_NR,
1678 .label = "GPA0",
1679 },
1680 }, {
1681 .chip = {
1682 .base = S5PC100_GPA1(0),
1683 .ngpio = S5PC100_GPIO_A1_NR,
1684 .label = "GPA1",
1685 },
1686 }, {
1687 .chip = {
1688 .base = S5PC100_GPB(0),
1689 .ngpio = S5PC100_GPIO_B_NR,
1690 .label = "GPB",
1691 },
1692 }, {
1693 .chip = {
1694 .base = S5PC100_GPC(0),
1695 .ngpio = S5PC100_GPIO_C_NR,
1696 .label = "GPC",
1697 },
1698 }, {
1699 .chip = {
1700 .base = S5PC100_GPD(0),
1701 .ngpio = S5PC100_GPIO_D_NR,
1702 .label = "GPD",
1703 },
1704 }, {
1705 .chip = {
1706 .base = S5PC100_GPE0(0),
1707 .ngpio = S5PC100_GPIO_E0_NR,
1708 .label = "GPE0",
1709 },
1710 }, {
1711 .chip = {
1712 .base = S5PC100_GPE1(0),
1713 .ngpio = S5PC100_GPIO_E1_NR,
1714 .label = "GPE1",
1715 },
1716 }, {
1717 .chip = {
1718 .base = S5PC100_GPF0(0),
1719 .ngpio = S5PC100_GPIO_F0_NR,
1720 .label = "GPF0",
1721 },
1722 }, {
1723 .chip = {
1724 .base = S5PC100_GPF1(0),
1725 .ngpio = S5PC100_GPIO_F1_NR,
1726 .label = "GPF1",
1727 },
1728 }, {
1729 .chip = {
1730 .base = S5PC100_GPF2(0),
1731 .ngpio = S5PC100_GPIO_F2_NR,
1732 .label = "GPF2",
1733 },
1734 }, {
1735 .chip = {
1736 .base = S5PC100_GPF3(0),
1737 .ngpio = S5PC100_GPIO_F3_NR,
1738 .label = "GPF3",
1739 },
1740 }, {
1741 .chip = {
1742 .base = S5PC100_GPG0(0),
1743 .ngpio = S5PC100_GPIO_G0_NR,
1744 .label = "GPG0",
1745 },
1746 }, {
1747 .chip = {
1748 .base = S5PC100_GPG1(0),
1749 .ngpio = S5PC100_GPIO_G1_NR,
1750 .label = "GPG1",
1751 },
1752 }, {
1753 .chip = {
1754 .base = S5PC100_GPG2(0),
1755 .ngpio = S5PC100_GPIO_G2_NR,
1756 .label = "GPG2",
1757 },
1758 }, {
1759 .chip = {
1760 .base = S5PC100_GPG3(0),
1761 .ngpio = S5PC100_GPIO_G3_NR,
1762 .label = "GPG3",
1763 },
1764 }, {
1765 .chip = {
1766 .base = S5PC100_GPI(0),
1767 .ngpio = S5PC100_GPIO_I_NR,
1768 .label = "GPI",
1769 },
1770 }, {
1771 .chip = {
1772 .base = S5PC100_GPJ0(0),
1773 .ngpio = S5PC100_GPIO_J0_NR,
1774 .label = "GPJ0",
1775 },
1776 }, {
1777 .chip = {
1778 .base = S5PC100_GPJ1(0),
1779 .ngpio = S5PC100_GPIO_J1_NR,
1780 .label = "GPJ1",
1781 },
1782 }, {
1783 .chip = {
1784 .base = S5PC100_GPJ2(0),
1785 .ngpio = S5PC100_GPIO_J2_NR,
1786 .label = "GPJ2",
1787 },
1788 }, {
1789 .chip = {
1790 .base = S5PC100_GPJ3(0),
1791 .ngpio = S5PC100_GPIO_J3_NR,
1792 .label = "GPJ3",
1793 },
1794 }, {
1795 .chip = {
1796 .base = S5PC100_GPJ4(0),
1797 .ngpio = S5PC100_GPIO_J4_NR,
1798 .label = "GPJ4",
1799 },
1800 }, {
1801 .chip = {
1802 .base = S5PC100_GPK0(0),
1803 .ngpio = S5PC100_GPIO_K0_NR,
1804 .label = "GPK0",
1805 },
1806 }, {
1807 .chip = {
1808 .base = S5PC100_GPK1(0),
1809 .ngpio = S5PC100_GPIO_K1_NR,
1810 .label = "GPK1",
1811 },
1812 }, {
1813 .chip = {
1814 .base = S5PC100_GPK2(0),
1815 .ngpio = S5PC100_GPIO_K2_NR,
1816 .label = "GPK2",
1817 },
1818 }, {
1819 .chip = {
1820 .base = S5PC100_GPK3(0),
1821 .ngpio = S5PC100_GPIO_K3_NR,
1822 .label = "GPK3",
1823 },
1824 }, {
1825 .chip = {
1826 .base = S5PC100_GPL0(0),
1827 .ngpio = S5PC100_GPIO_L0_NR,
1828 .label = "GPL0",
1829 },
1830 }, {
1831 .chip = {
1832 .base = S5PC100_GPL1(0),
1833 .ngpio = S5PC100_GPIO_L1_NR,
1834 .label = "GPL1",
1835 },
1836 }, {
1837 .chip = {
1838 .base = S5PC100_GPL2(0),
1839 .ngpio = S5PC100_GPIO_L2_NR,
1840 .label = "GPL2",
1841 },
1842 }, {
1843 .chip = {
1844 .base = S5PC100_GPL3(0),
1845 .ngpio = S5PC100_GPIO_L3_NR,
1846 .label = "GPL3",
1847 },
1848 }, {
1849 .chip = {
1850 .base = S5PC100_GPL4(0),
1851 .ngpio = S5PC100_GPIO_L4_NR,
1852 .label = "GPL4",
1853 },
1854 }, {
1855 .base = (S5P_VA_GPIO + 0xC00),
1856 .irq_base = IRQ_EINT(0),
1857 .chip = {
1858 .base = S5PC100_GPH0(0),
1859 .ngpio = S5PC100_GPIO_H0_NR,
1860 .label = "GPH0",
1861 .to_irq = samsung_gpiolib_to_irq,
1862 },
1863 }, {
1864 .base = (S5P_VA_GPIO + 0xC20),
1865 .irq_base = IRQ_EINT(8),
1866 .chip = {
1867 .base = S5PC100_GPH1(0),
1868 .ngpio = S5PC100_GPIO_H1_NR,
1869 .label = "GPH1",
1870 .to_irq = samsung_gpiolib_to_irq,
1871 },
1872 }, {
1873 .base = (S5P_VA_GPIO + 0xC40),
1874 .irq_base = IRQ_EINT(16),
1875 .chip = {
1876 .base = S5PC100_GPH2(0),
1877 .ngpio = S5PC100_GPIO_H2_NR,
1878 .label = "GPH2",
1879 .to_irq = samsung_gpiolib_to_irq,
1880 },
1881 }, {
1882 .base = (S5P_VA_GPIO + 0xC60),
1883 .irq_base = IRQ_EINT(24),
1884 .chip = {
1885 .base = S5PC100_GPH3(0),
1886 .ngpio = S5PC100_GPIO_H3_NR,
1887 .label = "GPH3",
1888 .to_irq = samsung_gpiolib_to_irq,
1889 },
1890 },
1891 #endif
1892 };
1893
1894 /*
1895 * Followings are the gpio banks in S5PV210/S5PC110
1896 *
1897 * The 'config' member when left to NULL, is initialized to the default
1898 * structure samsung_gpio_cfgs[3] in the init function below.
1899 *
1900 * The 'base' member is also initialized in the init function below.
1901 * Note: The initialization of 'base' member of samsung_gpio_chip structure
1902 * uses the above macro and depends on the banks being listed in order here.
1903 */
1904
1905 static struct samsung_gpio_chip s5pv210_gpios_4bit[] = {
1906 #ifdef CONFIG_CPU_S5PV210
1907 {
1908 .chip = {
1909 .base = S5PV210_GPA0(0),
1910 .ngpio = S5PV210_GPIO_A0_NR,
1911 .label = "GPA0",
1912 },
1913 }, {
1914 .chip = {
1915 .base = S5PV210_GPA1(0),
1916 .ngpio = S5PV210_GPIO_A1_NR,
1917 .label = "GPA1",
1918 },
1919 }, {
1920 .chip = {
1921 .base = S5PV210_GPB(0),
1922 .ngpio = S5PV210_GPIO_B_NR,
1923 .label = "GPB",
1924 },
1925 }, {
1926 .chip = {
1927 .base = S5PV210_GPC0(0),
1928 .ngpio = S5PV210_GPIO_C0_NR,
1929 .label = "GPC0",
1930 },
1931 }, {
1932 .chip = {
1933 .base = S5PV210_GPC1(0),
1934 .ngpio = S5PV210_GPIO_C1_NR,
1935 .label = "GPC1",
1936 },
1937 }, {
1938 .chip = {
1939 .base = S5PV210_GPD0(0),
1940 .ngpio = S5PV210_GPIO_D0_NR,
1941 .label = "GPD0",
1942 },
1943 }, {
1944 .chip = {
1945 .base = S5PV210_GPD1(0),
1946 .ngpio = S5PV210_GPIO_D1_NR,
1947 .label = "GPD1",
1948 },
1949 }, {
1950 .chip = {
1951 .base = S5PV210_GPE0(0),
1952 .ngpio = S5PV210_GPIO_E0_NR,
1953 .label = "GPE0",
1954 },
1955 }, {
1956 .chip = {
1957 .base = S5PV210_GPE1(0),
1958 .ngpio = S5PV210_GPIO_E1_NR,
1959 .label = "GPE1",
1960 },
1961 }, {
1962 .chip = {
1963 .base = S5PV210_GPF0(0),
1964 .ngpio = S5PV210_GPIO_F0_NR,
1965 .label = "GPF0",
1966 },
1967 }, {
1968 .chip = {
1969 .base = S5PV210_GPF1(0),
1970 .ngpio = S5PV210_GPIO_F1_NR,
1971 .label = "GPF1",
1972 },
1973 }, {
1974 .chip = {
1975 .base = S5PV210_GPF2(0),
1976 .ngpio = S5PV210_GPIO_F2_NR,
1977 .label = "GPF2",
1978 },
1979 }, {
1980 .chip = {
1981 .base = S5PV210_GPF3(0),
1982 .ngpio = S5PV210_GPIO_F3_NR,
1983 .label = "GPF3",
1984 },
1985 }, {
1986 .chip = {
1987 .base = S5PV210_GPG0(0),
1988 .ngpio = S5PV210_GPIO_G0_NR,
1989 .label = "GPG0",
1990 },
1991 }, {
1992 .chip = {
1993 .base = S5PV210_GPG1(0),
1994 .ngpio = S5PV210_GPIO_G1_NR,
1995 .label = "GPG1",
1996 },
1997 }, {
1998 .chip = {
1999 .base = S5PV210_GPG2(0),
2000 .ngpio = S5PV210_GPIO_G2_NR,
2001 .label = "GPG2",
2002 },
2003 }, {
2004 .chip = {
2005 .base = S5PV210_GPG3(0),
2006 .ngpio = S5PV210_GPIO_G3_NR,
2007 .label = "GPG3",
2008 },
2009 }, {
2010 .chip = {
2011 .base = S5PV210_GPI(0),
2012 .ngpio = S5PV210_GPIO_I_NR,
2013 .label = "GPI",
2014 },
2015 }, {
2016 .chip = {
2017 .base = S5PV210_GPJ0(0),
2018 .ngpio = S5PV210_GPIO_J0_NR,
2019 .label = "GPJ0",
2020 },
2021 }, {
2022 .chip = {
2023 .base = S5PV210_GPJ1(0),
2024 .ngpio = S5PV210_GPIO_J1_NR,
2025 .label = "GPJ1",
2026 },
2027 }, {
2028 .chip = {
2029 .base = S5PV210_GPJ2(0),
2030 .ngpio = S5PV210_GPIO_J2_NR,
2031 .label = "GPJ2",
2032 },
2033 }, {
2034 .chip = {
2035 .base = S5PV210_GPJ3(0),
2036 .ngpio = S5PV210_GPIO_J3_NR,
2037 .label = "GPJ3",
2038 },
2039 }, {
2040 .chip = {
2041 .base = S5PV210_GPJ4(0),
2042 .ngpio = S5PV210_GPIO_J4_NR,
2043 .label = "GPJ4",
2044 },
2045 }, {
2046 .chip = {
2047 .base = S5PV210_MP01(0),
2048 .ngpio = S5PV210_GPIO_MP01_NR,
2049 .label = "MP01",
2050 },
2051 }, {
2052 .chip = {
2053 .base = S5PV210_MP02(0),
2054 .ngpio = S5PV210_GPIO_MP02_NR,
2055 .label = "MP02",
2056 },
2057 }, {
2058 .chip = {
2059 .base = S5PV210_MP03(0),
2060 .ngpio = S5PV210_GPIO_MP03_NR,
2061 .label = "MP03",
2062 },
2063 }, {
2064 .chip = {
2065 .base = S5PV210_MP04(0),
2066 .ngpio = S5PV210_GPIO_MP04_NR,
2067 .label = "MP04",
2068 },
2069 }, {
2070 .chip = {
2071 .base = S5PV210_MP05(0),
2072 .ngpio = S5PV210_GPIO_MP05_NR,
2073 .label = "MP05",
2074 },
2075 }, {
2076 .base = (S5P_VA_GPIO + 0xC00),
2077 .irq_base = IRQ_EINT(0),
2078 .chip = {
2079 .base = S5PV210_GPH0(0),
2080 .ngpio = S5PV210_GPIO_H0_NR,
2081 .label = "GPH0",
2082 .to_irq = samsung_gpiolib_to_irq,
2083 },
2084 }, {
2085 .base = (S5P_VA_GPIO + 0xC20),
2086 .irq_base = IRQ_EINT(8),
2087 .chip = {
2088 .base = S5PV210_GPH1(0),
2089 .ngpio = S5PV210_GPIO_H1_NR,
2090 .label = "GPH1",
2091 .to_irq = samsung_gpiolib_to_irq,
2092 },
2093 }, {
2094 .base = (S5P_VA_GPIO + 0xC40),
2095 .irq_base = IRQ_EINT(16),
2096 .chip = {
2097 .base = S5PV210_GPH2(0),
2098 .ngpio = S5PV210_GPIO_H2_NR,
2099 .label = "GPH2",
2100 .to_irq = samsung_gpiolib_to_irq,
2101 },
2102 }, {
2103 .base = (S5P_VA_GPIO + 0xC60),
2104 .irq_base = IRQ_EINT(24),
2105 .chip = {
2106 .base = S5PV210_GPH3(0),
2107 .ngpio = S5PV210_GPIO_H3_NR,
2108 .label = "GPH3",
2109 .to_irq = samsung_gpiolib_to_irq,
2110 },
2111 },
2112 #endif
2113 };
2114
2115 /*
2116 * Followings are the gpio banks in EXYNOS4210
2117 *
2118 * The 'config' member when left to NULL, is initialized to the default
2119 * structure samsung_gpio_cfgs[3] in the init function below.
2120 *
2121 * The 'base' member is also initialized in the init function below.
2122 * Note: The initialization of 'base' member of samsung_gpio_chip structure
2123 * uses the above macro and depends on the banks being listed in order here.
2124 */
2125
2126 static struct samsung_gpio_chip exynos4_gpios_1[] = {
2127 #ifdef CONFIG_ARCH_EXYNOS4
2128 {
2129 .chip = {
2130 .base = EXYNOS4_GPA0(0),
2131 .ngpio = EXYNOS4_GPIO_A0_NR,
2132 .label = "GPA0",
2133 },
2134 }, {
2135 .chip = {
2136 .base = EXYNOS4_GPA1(0),
2137 .ngpio = EXYNOS4_GPIO_A1_NR,
2138 .label = "GPA1",
2139 },
2140 }, {
2141 .chip = {
2142 .base = EXYNOS4_GPB(0),
2143 .ngpio = EXYNOS4_GPIO_B_NR,
2144 .label = "GPB",
2145 },
2146 }, {
2147 .chip = {
2148 .base = EXYNOS4_GPC0(0),
2149 .ngpio = EXYNOS4_GPIO_C0_NR,
2150 .label = "GPC0",
2151 },
2152 }, {
2153 .chip = {
2154 .base = EXYNOS4_GPC1(0),
2155 .ngpio = EXYNOS4_GPIO_C1_NR,
2156 .label = "GPC1",
2157 },
2158 }, {
2159 .chip = {
2160 .base = EXYNOS4_GPD0(0),
2161 .ngpio = EXYNOS4_GPIO_D0_NR,
2162 .label = "GPD0",
2163 },
2164 }, {
2165 .chip = {
2166 .base = EXYNOS4_GPD1(0),
2167 .ngpio = EXYNOS4_GPIO_D1_NR,
2168 .label = "GPD1",
2169 },
2170 }, {
2171 .chip = {
2172 .base = EXYNOS4_GPE0(0),
2173 .ngpio = EXYNOS4_GPIO_E0_NR,
2174 .label = "GPE0",
2175 },
2176 }, {
2177 .chip = {
2178 .base = EXYNOS4_GPE1(0),
2179 .ngpio = EXYNOS4_GPIO_E1_NR,
2180 .label = "GPE1",
2181 },
2182 }, {
2183 .chip = {
2184 .base = EXYNOS4_GPE2(0),
2185 .ngpio = EXYNOS4_GPIO_E2_NR,
2186 .label = "GPE2",
2187 },
2188 }, {
2189 .chip = {
2190 .base = EXYNOS4_GPE3(0),
2191 .ngpio = EXYNOS4_GPIO_E3_NR,
2192 .label = "GPE3",
2193 },
2194 }, {
2195 .chip = {
2196 .base = EXYNOS4_GPE4(0),
2197 .ngpio = EXYNOS4_GPIO_E4_NR,
2198 .label = "GPE4",
2199 },
2200 }, {
2201 .chip = {
2202 .base = EXYNOS4_GPF0(0),
2203 .ngpio = EXYNOS4_GPIO_F0_NR,
2204 .label = "GPF0",
2205 },
2206 }, {
2207 .chip = {
2208 .base = EXYNOS4_GPF1(0),
2209 .ngpio = EXYNOS4_GPIO_F1_NR,
2210 .label = "GPF1",
2211 },
2212 }, {
2213 .chip = {
2214 .base = EXYNOS4_GPF2(0),
2215 .ngpio = EXYNOS4_GPIO_F2_NR,
2216 .label = "GPF2",
2217 },
2218 }, {
2219 .chip = {
2220 .base = EXYNOS4_GPF3(0),
2221 .ngpio = EXYNOS4_GPIO_F3_NR,
2222 .label = "GPF3",
2223 },
2224 },
2225 #endif
2226 };
2227
2228 static struct samsung_gpio_chip exynos4_gpios_2[] = {
2229 #ifdef CONFIG_ARCH_EXYNOS4
2230 {
2231 .chip = {
2232 .base = EXYNOS4_GPJ0(0),
2233 .ngpio = EXYNOS4_GPIO_J0_NR,
2234 .label = "GPJ0",
2235 },
2236 }, {
2237 .chip = {
2238 .base = EXYNOS4_GPJ1(0),
2239 .ngpio = EXYNOS4_GPIO_J1_NR,
2240 .label = "GPJ1",
2241 },
2242 }, {
2243 .chip = {
2244 .base = EXYNOS4_GPK0(0),
2245 .ngpio = EXYNOS4_GPIO_K0_NR,
2246 .label = "GPK0",
2247 },
2248 }, {
2249 .chip = {
2250 .base = EXYNOS4_GPK1(0),
2251 .ngpio = EXYNOS4_GPIO_K1_NR,
2252 .label = "GPK1",
2253 },
2254 }, {
2255 .chip = {
2256 .base = EXYNOS4_GPK2(0),
2257 .ngpio = EXYNOS4_GPIO_K2_NR,
2258 .label = "GPK2",
2259 },
2260 }, {
2261 .chip = {
2262 .base = EXYNOS4_GPK3(0),
2263 .ngpio = EXYNOS4_GPIO_K3_NR,
2264 .label = "GPK3",
2265 },
2266 }, {
2267 .chip = {
2268 .base = EXYNOS4_GPL0(0),
2269 .ngpio = EXYNOS4_GPIO_L0_NR,
2270 .label = "GPL0",
2271 },
2272 }, {
2273 .chip = {
2274 .base = EXYNOS4_GPL1(0),
2275 .ngpio = EXYNOS4_GPIO_L1_NR,
2276 .label = "GPL1",
2277 },
2278 }, {
2279 .chip = {
2280 .base = EXYNOS4_GPL2(0),
2281 .ngpio = EXYNOS4_GPIO_L2_NR,
2282 .label = "GPL2",
2283 },
2284 }, {
2285 .config = &samsung_gpio_cfgs[8],
2286 .chip = {
2287 .base = EXYNOS4_GPY0(0),
2288 .ngpio = EXYNOS4_GPIO_Y0_NR,
2289 .label = "GPY0",
2290 },
2291 }, {
2292 .config = &samsung_gpio_cfgs[8],
2293 .chip = {
2294 .base = EXYNOS4_GPY1(0),
2295 .ngpio = EXYNOS4_GPIO_Y1_NR,
2296 .label = "GPY1",
2297 },
2298 }, {
2299 .config = &samsung_gpio_cfgs[8],
2300 .chip = {
2301 .base = EXYNOS4_GPY2(0),
2302 .ngpio = EXYNOS4_GPIO_Y2_NR,
2303 .label = "GPY2",
2304 },
2305 }, {
2306 .config = &samsung_gpio_cfgs[8],
2307 .chip = {
2308 .base = EXYNOS4_GPY3(0),
2309 .ngpio = EXYNOS4_GPIO_Y3_NR,
2310 .label = "GPY3",
2311 },
2312 }, {
2313 .config = &samsung_gpio_cfgs[8],
2314 .chip = {
2315 .base = EXYNOS4_GPY4(0),
2316 .ngpio = EXYNOS4_GPIO_Y4_NR,
2317 .label = "GPY4",
2318 },
2319 }, {
2320 .config = &samsung_gpio_cfgs[8],
2321 .chip = {
2322 .base = EXYNOS4_GPY5(0),
2323 .ngpio = EXYNOS4_GPIO_Y5_NR,
2324 .label = "GPY5",
2325 },
2326 }, {
2327 .config = &samsung_gpio_cfgs[8],
2328 .chip = {
2329 .base = EXYNOS4_GPY6(0),
2330 .ngpio = EXYNOS4_GPIO_Y6_NR,
2331 .label = "GPY6",
2332 },
2333 }, {
2334 .base = (S5P_VA_GPIO2 + 0xC00),
2335 .config = &samsung_gpio_cfgs[9],
2336 .irq_base = IRQ_EINT(0),
2337 .chip = {
2338 .base = EXYNOS4_GPX0(0),
2339 .ngpio = EXYNOS4_GPIO_X0_NR,
2340 .label = "GPX0",
2341 .to_irq = samsung_gpiolib_to_irq,
2342 },
2343 }, {
2344 .base = (S5P_VA_GPIO2 + 0xC20),
2345 .config = &samsung_gpio_cfgs[9],
2346 .irq_base = IRQ_EINT(8),
2347 .chip = {
2348 .base = EXYNOS4_GPX1(0),
2349 .ngpio = EXYNOS4_GPIO_X1_NR,
2350 .label = "GPX1",
2351 .to_irq = samsung_gpiolib_to_irq,
2352 },
2353 }, {
2354 .base = (S5P_VA_GPIO2 + 0xC40),
2355 .config = &samsung_gpio_cfgs[9],
2356 .irq_base = IRQ_EINT(16),
2357 .chip = {
2358 .base = EXYNOS4_GPX2(0),
2359 .ngpio = EXYNOS4_GPIO_X2_NR,
2360 .label = "GPX2",
2361 .to_irq = samsung_gpiolib_to_irq,
2362 },
2363 }, {
2364 .base = (S5P_VA_GPIO2 + 0xC60),
2365 .config = &samsung_gpio_cfgs[9],
2366 .irq_base = IRQ_EINT(24),
2367 .chip = {
2368 .base = EXYNOS4_GPX3(0),
2369 .ngpio = EXYNOS4_GPIO_X3_NR,
2370 .label = "GPX3",
2371 .to_irq = samsung_gpiolib_to_irq,
2372 },
2373 },
2374 #endif
2375 };
2376
2377 static struct samsung_gpio_chip exynos4_gpios_3[] = {
2378 #ifdef CONFIG_ARCH_EXYNOS4
2379 {
2380 .chip = {
2381 .base = EXYNOS4_GPZ(0),
2382 .ngpio = EXYNOS4_GPIO_Z_NR,
2383 .label = "GPZ",
2384 },
2385 },
2386 #endif
2387 };
2388
2389 #if defined(CONFIG_ARCH_EXYNOS4) && defined(CONFIG_OF)
2390 static int exynos4_gpio_xlate(struct gpio_chip *gc,
2391 const struct of_phandle_args *gpiospec, u32 *flags)
2392 {
2393 unsigned int pin;
2394
2395 if (WARN_ON(gc->of_gpio_n_cells < 4))
2396 return -EINVAL;
2397
2398 if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
2399 return -EINVAL;
2400
2401 if (gpiospec->args[0] > gc->ngpio)
2402 return -EINVAL;
2403
2404 pin = gc->base + gpiospec->args[0];
2405
2406 if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
2407 pr_warn("gpio_xlate: failed to set pin function\n");
2408 if (s3c_gpio_setpull(pin, gpiospec->args[2]))
2409 pr_warn("gpio_xlate: failed to set pin pull up/down\n");
2410 if (s5p_gpio_set_drvstr(pin, gpiospec->args[3]))
2411 pr_warn("gpio_xlate: failed to set pin drive strength\n");
2412
2413 return gpiospec->args[0];
2414 }
2415
2416 static const struct of_device_id exynos4_gpio_dt_match[] __initdata = {
2417 { .compatible = "samsung,exynos4-gpio", },
2418 {}
2419 };
2420
2421 static __init void exynos4_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
2422 u64 base, u64 offset)
2423 {
2424 struct gpio_chip *gc = &chip->chip;
2425 u64 address;
2426
2427 if (!of_have_populated_dt())
2428 return;
2429
2430 address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
2431 gc->of_node = of_find_matching_node_by_address(NULL,
2432 exynos4_gpio_dt_match, address);
2433 if (!gc->of_node) {
2434 pr_info("gpio: device tree node not found for gpio controller"
2435 " with base address %08llx\n", address);
2436 return;
2437 }
2438 gc->of_gpio_n_cells = 4;
2439 gc->of_xlate = exynos4_gpio_xlate;
2440 }
2441 #elif defined(CONFIG_ARCH_EXYNOS4)
2442 static __init void exynos4_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
2443 u64 base, u64 offset)
2444 {
2445 return;
2446 }
2447 #endif /* defined(CONFIG_ARCH_EXYNOS4) && defined(CONFIG_OF) */
2448
2449 /* TODO: cleanup soc_is_* */
2450 static __init int samsung_gpiolib_init(void)
2451 {
2452 struct samsung_gpio_chip *chip;
2453 int i, nr_chips;
2454 int group = 0;
2455
2456 samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs));
2457
2458 if (soc_is_s3c24xx()) {
2459 s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
2460 ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
2461 } else if (soc_is_s3c64xx()) {
2462 samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
2463 ARRAY_SIZE(s3c64xx_gpios_2bit),
2464 S3C64XX_VA_GPIO + 0xE0, 0x20);
2465 samsung_gpiolib_add_4bit_chips(s3c64xx_gpios_4bit,
2466 ARRAY_SIZE(s3c64xx_gpios_4bit),
2467 S3C64XX_VA_GPIO);
2468 samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2,
2469 ARRAY_SIZE(s3c64xx_gpios_4bit2));
2470 } else if (soc_is_s5p6440()) {
2471 samsung_gpiolib_add_2bit_chips(s5p6440_gpios_2bit,
2472 ARRAY_SIZE(s5p6440_gpios_2bit), NULL, 0x0);
2473 samsung_gpiolib_add_4bit_chips(s5p6440_gpios_4bit,
2474 ARRAY_SIZE(s5p6440_gpios_4bit), S5P_VA_GPIO);
2475 samsung_gpiolib_add_4bit2_chips(s5p6440_gpios_4bit2,
2476 ARRAY_SIZE(s5p6440_gpios_4bit2));
2477 s5p64x0_gpiolib_add_rbank(s5p6440_gpios_rbank,
2478 ARRAY_SIZE(s5p6440_gpios_rbank));
2479 } else if (soc_is_s5p6450()) {
2480 samsung_gpiolib_add_2bit_chips(s5p6450_gpios_2bit,
2481 ARRAY_SIZE(s5p6450_gpios_2bit), NULL, 0x0);
2482 samsung_gpiolib_add_4bit_chips(s5p6450_gpios_4bit,
2483 ARRAY_SIZE(s5p6450_gpios_4bit), S5P_VA_GPIO);
2484 samsung_gpiolib_add_4bit2_chips(s5p6450_gpios_4bit2,
2485 ARRAY_SIZE(s5p6450_gpios_4bit2));
2486 s5p64x0_gpiolib_add_rbank(s5p6450_gpios_rbank,
2487 ARRAY_SIZE(s5p6450_gpios_rbank));
2488 } else if (soc_is_s5pc100()) {
2489 group = 0;
2490 chip = s5pc100_gpios_4bit;
2491 nr_chips = ARRAY_SIZE(s5pc100_gpios_4bit);
2492
2493 for (i = 0; i < nr_chips; i++, chip++) {
2494 if (!chip->config) {
2495 chip->config = &samsung_gpio_cfgs[3];
2496 chip->group = group++;
2497 }
2498 }
2499 samsung_gpiolib_add_4bit_chips(s5pc100_gpios_4bit, nr_chips, S5P_VA_GPIO);
2500 #if defined(CONFIG_CPU_S5PC100) && defined(CONFIG_S5P_GPIO_INT)
2501 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
2502 #endif
2503 } else if (soc_is_s5pv210()) {
2504 group = 0;
2505 chip = s5pv210_gpios_4bit;
2506 nr_chips = ARRAY_SIZE(s5pv210_gpios_4bit);
2507
2508 for (i = 0; i < nr_chips; i++, chip++) {
2509 if (!chip->config) {
2510 chip->config = &samsung_gpio_cfgs[3];
2511 chip->group = group++;
2512 }
2513 }
2514 samsung_gpiolib_add_4bit_chips(s5pv210_gpios_4bit, nr_chips, S5P_VA_GPIO);
2515 #if defined(CONFIG_CPU_S5PV210) && defined(CONFIG_S5P_GPIO_INT)
2516 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
2517 #endif
2518 } else if (soc_is_exynos4210()) {
2519 group = 0;
2520
2521 /* gpio part1 */
2522 chip = exynos4_gpios_1;
2523 nr_chips = ARRAY_SIZE(exynos4_gpios_1);
2524
2525 for (i = 0; i < nr_chips; i++, chip++) {
2526 if (!chip->config) {
2527 chip->config = &exynos4_gpio_cfg;
2528 chip->group = group++;
2529 }
2530 #ifdef CONFIG_CPU_EXYNOS4210
2531 exynos4_gpiolib_attach_ofnode(chip,
2532 EXYNOS4_PA_GPIO1, i * 0x20);
2533 #endif
2534 }
2535 samsung_gpiolib_add_4bit_chips(exynos4_gpios_1, nr_chips, S5P_VA_GPIO1);
2536
2537 /* gpio part2 */
2538 chip = exynos4_gpios_2;
2539 nr_chips = ARRAY_SIZE(exynos4_gpios_2);
2540
2541 for (i = 0; i < nr_chips; i++, chip++) {
2542 if (!chip->config) {
2543 chip->config = &exynos4_gpio_cfg;
2544 chip->group = group++;
2545 }
2546 #ifdef CONFIG_CPU_EXYNOS4210
2547 exynos4_gpiolib_attach_ofnode(chip,
2548 EXYNOS4_PA_GPIO2, i * 0x20);
2549 #endif
2550 }
2551 samsung_gpiolib_add_4bit_chips(exynos4_gpios_2, nr_chips, S5P_VA_GPIO2);
2552
2553 /* gpio part3 */
2554 chip = exynos4_gpios_3;
2555 nr_chips = ARRAY_SIZE(exynos4_gpios_3);
2556
2557 for (i = 0; i < nr_chips; i++, chip++) {
2558 if (!chip->config) {
2559 chip->config = &exynos4_gpio_cfg;
2560 chip->group = group++;
2561 }
2562 #ifdef CONFIG_CPU_EXYNOS4210
2563 exynos4_gpiolib_attach_ofnode(chip,
2564 EXYNOS4_PA_GPIO3, i * 0x20);
2565 #endif
2566 }
2567 samsung_gpiolib_add_4bit_chips(exynos4_gpios_3, nr_chips, S5P_VA_GPIO3);
2568
2569 #if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
2570 s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
2571 s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
2572 #endif
2573 } else {
2574 WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
2575 return -ENODEV;
2576 }
2577
2578 return 0;
2579 }
2580 core_initcall(samsung_gpiolib_init);
2581
2582 int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
2583 {
2584 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2585 unsigned long flags;
2586 int offset;
2587 int ret;
2588
2589 if (!chip)
2590 return -EINVAL;
2591
2592 offset = pin - chip->chip.base;
2593
2594 samsung_gpio_lock(chip, flags);
2595 ret = samsung_gpio_do_setcfg(chip, offset, config);
2596 samsung_gpio_unlock(chip, flags);
2597
2598 return ret;
2599 }
2600 EXPORT_SYMBOL(s3c_gpio_cfgpin);
2601
2602 int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
2603 unsigned int cfg)
2604 {
2605 int ret;
2606
2607 for (; nr > 0; nr--, start++) {
2608 ret = s3c_gpio_cfgpin(start, cfg);
2609 if (ret != 0)
2610 return ret;
2611 }
2612
2613 return 0;
2614 }
2615 EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
2616
2617 int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
2618 unsigned int cfg, samsung_gpio_pull_t pull)
2619 {
2620 int ret;
2621
2622 for (; nr > 0; nr--, start++) {
2623 s3c_gpio_setpull(start, pull);
2624 ret = s3c_gpio_cfgpin(start, cfg);
2625 if (ret != 0)
2626 return ret;
2627 }
2628
2629 return 0;
2630 }
2631 EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_range);
2632
2633 unsigned s3c_gpio_getcfg(unsigned int pin)
2634 {
2635 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2636 unsigned long flags;
2637 unsigned ret = 0;
2638 int offset;
2639
2640 if (chip) {
2641 offset = pin - chip->chip.base;
2642
2643 samsung_gpio_lock(chip, flags);
2644 ret = samsung_gpio_do_getcfg(chip, offset);
2645 samsung_gpio_unlock(chip, flags);
2646 }
2647
2648 return ret;
2649 }
2650 EXPORT_SYMBOL(s3c_gpio_getcfg);
2651
2652 int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull)
2653 {
2654 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2655 unsigned long flags;
2656 int offset, ret;
2657
2658 if (!chip)
2659 return -EINVAL;
2660
2661 offset = pin - chip->chip.base;
2662
2663 samsung_gpio_lock(chip, flags);
2664 ret = samsung_gpio_do_setpull(chip, offset, pull);
2665 samsung_gpio_unlock(chip, flags);
2666
2667 return ret;
2668 }
2669 EXPORT_SYMBOL(s3c_gpio_setpull);
2670
2671 samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
2672 {
2673 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2674 unsigned long flags;
2675 int offset;
2676 u32 pup = 0;
2677
2678 if (chip) {
2679 offset = pin - chip->chip.base;
2680
2681 samsung_gpio_lock(chip, flags);
2682 pup = samsung_gpio_do_getpull(chip, offset);
2683 samsung_gpio_unlock(chip, flags);
2684 }
2685
2686 return (__force samsung_gpio_pull_t)pup;
2687 }
2688 EXPORT_SYMBOL(s3c_gpio_getpull);
2689
2690 /* gpiolib wrappers until these are totally eliminated */
2691
2692 void s3c2410_gpio_pullup(unsigned int pin, unsigned int to)
2693 {
2694 int ret;
2695
2696 WARN_ON(to); /* should be none of these left */
2697
2698 if (!to) {
2699 /* if pull is enabled, try first with up, and if that
2700 * fails, try using down */
2701
2702 ret = s3c_gpio_setpull(pin, S3C_GPIO_PULL_UP);
2703 if (ret)
2704 s3c_gpio_setpull(pin, S3C_GPIO_PULL_DOWN);
2705 } else {
2706 s3c_gpio_setpull(pin, S3C_GPIO_PULL_NONE);
2707 }
2708 }
2709 EXPORT_SYMBOL(s3c2410_gpio_pullup);
2710
2711 void s3c2410_gpio_setpin(unsigned int pin, unsigned int to)
2712 {
2713 /* do this via gpiolib until all users removed */
2714
2715 gpio_request(pin, "temporary");
2716 gpio_set_value(pin, to);
2717 gpio_free(pin);
2718 }
2719 EXPORT_SYMBOL(s3c2410_gpio_setpin);
2720
2721 unsigned int s3c2410_gpio_getpin(unsigned int pin)
2722 {
2723 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2724 unsigned long offs = pin - chip->chip.base;
2725
2726 return __raw_readl(chip->base + 0x04) & (1 << offs);
2727 }
2728 EXPORT_SYMBOL(s3c2410_gpio_getpin);
2729
2730 #ifdef CONFIG_S5P_GPIO_DRVSTR
2731 s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin)
2732 {
2733 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2734 unsigned int off;
2735 void __iomem *reg;
2736 int shift;
2737 u32 drvstr;
2738
2739 if (!chip)
2740 return -EINVAL;
2741
2742 off = pin - chip->chip.base;
2743 shift = off * 2;
2744 reg = chip->base + 0x0C;
2745
2746 drvstr = __raw_readl(reg);
2747 drvstr = drvstr >> shift;
2748 drvstr &= 0x3;
2749
2750 return (__force s5p_gpio_drvstr_t)drvstr;
2751 }
2752 EXPORT_SYMBOL(s5p_gpio_get_drvstr);
2753
2754 int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr)
2755 {
2756 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
2757 unsigned int off;
2758 void __iomem *reg;
2759 int shift;
2760 u32 tmp;
2761
2762 if (!chip)
2763 return -EINVAL;
2764
2765 off = pin - chip->chip.base;
2766 shift = off * 2;
2767 reg = chip->base + 0x0C;
2768
2769 tmp = __raw_readl(reg);
2770 tmp &= ~(0x3 << shift);
2771 tmp |= drvstr << shift;
2772
2773 __raw_writel(tmp, reg);
2774
2775 return 0;
2776 }
2777 EXPORT_SYMBOL(s5p_gpio_set_drvstr);
2778 #endif /* CONFIG_S5P_GPIO_DRVSTR */
2779
2780 #ifdef CONFIG_PLAT_S3C24XX
2781 unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
2782 {
2783 unsigned long flags;
2784 unsigned long misccr;
2785
2786 local_irq_save(flags);
2787 misccr = __raw_readl(S3C24XX_MISCCR);
2788 misccr &= ~clear;
2789 misccr ^= change;
2790 __raw_writel(misccr, S3C24XX_MISCCR);
2791 local_irq_restore(flags);
2792
2793 return misccr;
2794 }
2795 EXPORT_SYMBOL(s3c2410_modify_misccr);
2796 #endif