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be2net: Fix to avoid hardware workaround when not needed
[deliverable/linux.git] / drivers / gpio / gpio-samsung.c
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-gpio.h>
36
37 #include <plat/cpu.h>
38 #include <plat/gpio-core.h>
39 #include <plat/gpio-cfg.h>
40 #include <plat/gpio-cfg-helpers.h>
41 #include <plat/pm.h>
42
43 int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
44 unsigned int off, samsung_gpio_pull_t pull)
45 {
46 void __iomem *reg = chip->base + 0x08;
47 int shift = off * 2;
48 u32 pup;
49
50 pup = __raw_readl(reg);
51 pup &= ~(3 << shift);
52 pup |= pull << shift;
53 __raw_writel(pup, reg);
54
55 return 0;
56 }
57
58 samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
59 unsigned int off)
60 {
61 void __iomem *reg = chip->base + 0x08;
62 int shift = off * 2;
63 u32 pup = __raw_readl(reg);
64
65 pup >>= shift;
66 pup &= 0x3;
67
68 return (__force samsung_gpio_pull_t)pup;
69 }
70
71 int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
72 unsigned int off, samsung_gpio_pull_t pull)
73 {
74 switch (pull) {
75 case S3C_GPIO_PULL_NONE:
76 pull = 0x01;
77 break;
78 case S3C_GPIO_PULL_UP:
79 pull = 0x00;
80 break;
81 case S3C_GPIO_PULL_DOWN:
82 pull = 0x02;
83 break;
84 }
85 return samsung_gpio_setpull_updown(chip, off, pull);
86 }
87
88 samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
89 unsigned int off)
90 {
91 samsung_gpio_pull_t pull;
92
93 pull = samsung_gpio_getpull_updown(chip, off);
94
95 switch (pull) {
96 case 0x00:
97 pull = S3C_GPIO_PULL_UP;
98 break;
99 case 0x01:
100 case 0x03:
101 pull = S3C_GPIO_PULL_NONE;
102 break;
103 case 0x02:
104 pull = S3C_GPIO_PULL_DOWN;
105 break;
106 }
107
108 return pull;
109 }
110
111 static int s3c24xx_gpio_setpull_1(struct samsung_gpio_chip *chip,
112 unsigned int off, samsung_gpio_pull_t pull,
113 samsung_gpio_pull_t updown)
114 {
115 void __iomem *reg = chip->base + 0x08;
116 u32 pup = __raw_readl(reg);
117
118 if (pull == updown)
119 pup &= ~(1 << off);
120 else if (pull == S3C_GPIO_PULL_NONE)
121 pup |= (1 << off);
122 else
123 return -EINVAL;
124
125 __raw_writel(pup, reg);
126 return 0;
127 }
128
129 static samsung_gpio_pull_t s3c24xx_gpio_getpull_1(struct samsung_gpio_chip *chip,
130 unsigned int off,
131 samsung_gpio_pull_t updown)
132 {
133 void __iomem *reg = chip->base + 0x08;
134 u32 pup = __raw_readl(reg);
135
136 pup &= (1 << off);
137 return pup ? S3C_GPIO_PULL_NONE : updown;
138 }
139
140 samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
141 unsigned int off)
142 {
143 return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_UP);
144 }
145
146 int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
147 unsigned int off, samsung_gpio_pull_t pull)
148 {
149 return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_UP);
150 }
151
152 samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
153 unsigned int off)
154 {
155 return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_DOWN);
156 }
157
158 int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
159 unsigned int off, samsung_gpio_pull_t pull)
160 {
161 return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN);
162 }
163
164 static int exynos_gpio_setpull(struct samsung_gpio_chip *chip,
165 unsigned int off, samsung_gpio_pull_t pull)
166 {
167 if (pull == S3C_GPIO_PULL_UP)
168 pull = 3;
169
170 return samsung_gpio_setpull_updown(chip, off, pull);
171 }
172
173 static samsung_gpio_pull_t exynos_gpio_getpull(struct samsung_gpio_chip *chip,
174 unsigned int off)
175 {
176 samsung_gpio_pull_t pull;
177
178 pull = samsung_gpio_getpull_updown(chip, off);
179
180 if (pull == 3)
181 pull = S3C_GPIO_PULL_UP;
182
183 return pull;
184 }
185
186 /*
187 * samsung_gpio_setcfg_2bit - Samsung 2bit style GPIO configuration.
188 * @chip: The gpio chip that is being configured.
189 * @off: The offset for the GPIO being configured.
190 * @cfg: The configuration value to set.
191 *
192 * This helper deal with the GPIO cases where the control register
193 * has two bits of configuration per gpio, which have the following
194 * functions:
195 * 00 = input
196 * 01 = output
197 * 1x = special function
198 */
199
200 static int samsung_gpio_setcfg_2bit(struct samsung_gpio_chip *chip,
201 unsigned int off, unsigned int cfg)
202 {
203 void __iomem *reg = chip->base;
204 unsigned int shift = off * 2;
205 u32 con;
206
207 if (samsung_gpio_is_cfg_special(cfg)) {
208 cfg &= 0xf;
209 if (cfg > 3)
210 return -EINVAL;
211
212 cfg <<= shift;
213 }
214
215 con = __raw_readl(reg);
216 con &= ~(0x3 << shift);
217 con |= cfg;
218 __raw_writel(con, reg);
219
220 return 0;
221 }
222
223 /*
224 * samsung_gpio_getcfg_2bit - Samsung 2bit style GPIO configuration read.
225 * @chip: The gpio chip that is being configured.
226 * @off: The offset for the GPIO being configured.
227 *
228 * The reverse of samsung_gpio_setcfg_2bit(). Will return a value which
229 * could be directly passed back to samsung_gpio_setcfg_2bit(), from the
230 * S3C_GPIO_SPECIAL() macro.
231 */
232
233 static unsigned int samsung_gpio_getcfg_2bit(struct samsung_gpio_chip *chip,
234 unsigned int off)
235 {
236 u32 con;
237
238 con = __raw_readl(chip->base);
239 con >>= off * 2;
240 con &= 3;
241
242 /* this conversion works for IN and OUT as well as special mode */
243 return S3C_GPIO_SPECIAL(con);
244 }
245
246 /*
247 * samsung_gpio_setcfg_4bit - Samsung 4bit single register GPIO config.
248 * @chip: The gpio chip that is being configured.
249 * @off: The offset for the GPIO being configured.
250 * @cfg: The configuration value to set.
251 *
252 * This helper deal with the GPIO cases where the control register has 4 bits
253 * of control per GPIO, generally in the form of:
254 * 0000 = Input
255 * 0001 = Output
256 * others = Special functions (dependent on bank)
257 *
258 * Note, since the code to deal with the case where there are two control
259 * registers instead of one, we do not have a separate set of functions for
260 * each case.
261 */
262
263 static int samsung_gpio_setcfg_4bit(struct samsung_gpio_chip *chip,
264 unsigned int off, unsigned int cfg)
265 {
266 void __iomem *reg = chip->base;
267 unsigned int shift = (off & 7) * 4;
268 u32 con;
269
270 if (off < 8 && chip->chip.ngpio > 8)
271 reg -= 4;
272
273 if (samsung_gpio_is_cfg_special(cfg)) {
274 cfg &= 0xf;
275 cfg <<= shift;
276 }
277
278 con = __raw_readl(reg);
279 con &= ~(0xf << shift);
280 con |= cfg;
281 __raw_writel(con, reg);
282
283 return 0;
284 }
285
286 /*
287 * samsung_gpio_getcfg_4bit - Samsung 4bit single register GPIO config read.
288 * @chip: The gpio chip that is being configured.
289 * @off: The offset for the GPIO being configured.
290 *
291 * The reverse of samsung_gpio_setcfg_4bit(), turning a gpio configuration
292 * register setting into a value the software can use, such as could be passed
293 * to samsung_gpio_setcfg_4bit().
294 *
295 * @sa samsung_gpio_getcfg_2bit
296 */
297
298 static unsigned samsung_gpio_getcfg_4bit(struct samsung_gpio_chip *chip,
299 unsigned int off)
300 {
301 void __iomem *reg = chip->base;
302 unsigned int shift = (off & 7) * 4;
303 u32 con;
304
305 if (off < 8 && chip->chip.ngpio > 8)
306 reg -= 4;
307
308 con = __raw_readl(reg);
309 con >>= shift;
310 con &= 0xf;
311
312 /* this conversion works for IN and OUT as well as special mode */
313 return S3C_GPIO_SPECIAL(con);
314 }
315
316 #ifdef CONFIG_PLAT_S3C24XX
317 /*
318 * s3c24xx_gpio_setcfg_abank - S3C24XX style GPIO configuration (Bank A)
319 * @chip: The gpio chip that is being configured.
320 * @off: The offset for the GPIO being configured.
321 * @cfg: The configuration value to set.
322 *
323 * This helper deal with the GPIO cases where the control register
324 * has one bit of configuration for the gpio, where setting the bit
325 * means the pin is in special function mode and unset means output.
326 */
327
328 static int s3c24xx_gpio_setcfg_abank(struct samsung_gpio_chip *chip,
329 unsigned int off, unsigned int cfg)
330 {
331 void __iomem *reg = chip->base;
332 unsigned int shift = off;
333 u32 con;
334
335 if (samsung_gpio_is_cfg_special(cfg)) {
336 cfg &= 0xf;
337
338 /* Map output to 0, and SFN2 to 1 */
339 cfg -= 1;
340 if (cfg > 1)
341 return -EINVAL;
342
343 cfg <<= shift;
344 }
345
346 con = __raw_readl(reg);
347 con &= ~(0x1 << shift);
348 con |= cfg;
349 __raw_writel(con, reg);
350
351 return 0;
352 }
353
354 /*
355 * s3c24xx_gpio_getcfg_abank - S3C24XX style GPIO configuration read (Bank A)
356 * @chip: The gpio chip that is being configured.
357 * @off: The offset for the GPIO being configured.
358 *
359 * The reverse of s3c24xx_gpio_setcfg_abank() turning an GPIO into a usable
360 * GPIO configuration value.
361 *
362 * @sa samsung_gpio_getcfg_2bit
363 * @sa samsung_gpio_getcfg_4bit
364 */
365
366 static unsigned s3c24xx_gpio_getcfg_abank(struct samsung_gpio_chip *chip,
367 unsigned int off)
368 {
369 u32 con;
370
371 con = __raw_readl(chip->base);
372 con >>= off;
373 con &= 1;
374 con++;
375
376 return S3C_GPIO_SFN(con);
377 }
378 #endif
379
380 #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
381 static int s5p64x0_gpio_setcfg_rbank(struct samsung_gpio_chip *chip,
382 unsigned int off, unsigned int cfg)
383 {
384 void __iomem *reg = chip->base;
385 unsigned int shift;
386 u32 con;
387
388 switch (off) {
389 case 0:
390 case 1:
391 case 2:
392 case 3:
393 case 4:
394 case 5:
395 shift = (off & 7) * 4;
396 reg -= 4;
397 break;
398 case 6:
399 shift = ((off + 1) & 7) * 4;
400 reg -= 4;
401 default:
402 shift = ((off + 1) & 7) * 4;
403 break;
404 }
405
406 if (samsung_gpio_is_cfg_special(cfg)) {
407 cfg &= 0xf;
408 cfg <<= shift;
409 }
410
411 con = __raw_readl(reg);
412 con &= ~(0xf << shift);
413 con |= cfg;
414 __raw_writel(con, reg);
415
416 return 0;
417 }
418 #endif
419
420 static void __init samsung_gpiolib_set_cfg(struct samsung_gpio_cfg *chipcfg,
421 int nr_chips)
422 {
423 for (; nr_chips > 0; nr_chips--, chipcfg++) {
424 if (!chipcfg->set_config)
425 chipcfg->set_config = samsung_gpio_setcfg_4bit;
426 if (!chipcfg->get_config)
427 chipcfg->get_config = samsung_gpio_getcfg_4bit;
428 if (!chipcfg->set_pull)
429 chipcfg->set_pull = samsung_gpio_setpull_updown;
430 if (!chipcfg->get_pull)
431 chipcfg->get_pull = samsung_gpio_getpull_updown;
432 }
433 }
434
435 struct samsung_gpio_cfg s3c24xx_gpiocfg_default = {
436 .set_config = samsung_gpio_setcfg_2bit,
437 .get_config = samsung_gpio_getcfg_2bit,
438 };
439
440 #ifdef CONFIG_PLAT_S3C24XX
441 static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = {
442 .set_config = s3c24xx_gpio_setcfg_abank,
443 .get_config = s3c24xx_gpio_getcfg_abank,
444 };
445 #endif
446
447 #if defined(CONFIG_ARCH_EXYNOS4) || defined(CONFIG_SOC_EXYNOS5250)
448 static struct samsung_gpio_cfg exynos_gpio_cfg = {
449 .set_pull = exynos_gpio_setpull,
450 .get_pull = exynos_gpio_getpull,
451 .set_config = samsung_gpio_setcfg_4bit,
452 .get_config = samsung_gpio_getcfg_4bit,
453 };
454 #endif
455
456 #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450)
457 static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = {
458 .cfg_eint = 0x3,
459 .set_config = s5p64x0_gpio_setcfg_rbank,
460 .get_config = samsung_gpio_getcfg_4bit,
461 .set_pull = samsung_gpio_setpull_updown,
462 .get_pull = samsung_gpio_getpull_updown,
463 };
464 #endif
465
466 static struct samsung_gpio_cfg samsung_gpio_cfgs[] = {
467 [0] = {
468 .cfg_eint = 0x0,
469 },
470 [1] = {
471 .cfg_eint = 0x3,
472 },
473 [2] = {
474 .cfg_eint = 0x7,
475 },
476 [3] = {
477 .cfg_eint = 0xF,
478 },
479 [4] = {
480 .cfg_eint = 0x0,
481 .set_config = samsung_gpio_setcfg_2bit,
482 .get_config = samsung_gpio_getcfg_2bit,
483 },
484 [5] = {
485 .cfg_eint = 0x2,
486 .set_config = samsung_gpio_setcfg_2bit,
487 .get_config = samsung_gpio_getcfg_2bit,
488 },
489 [6] = {
490 .cfg_eint = 0x3,
491 .set_config = samsung_gpio_setcfg_2bit,
492 .get_config = samsung_gpio_getcfg_2bit,
493 },
494 [7] = {
495 .set_config = samsung_gpio_setcfg_2bit,
496 .get_config = samsung_gpio_getcfg_2bit,
497 },
498 [8] = {
499 .set_pull = exynos_gpio_setpull,
500 .get_pull = exynos_gpio_getpull,
501 },
502 [9] = {
503 .cfg_eint = 0x3,
504 .set_pull = exynos_gpio_setpull,
505 .get_pull = exynos_gpio_getpull,
506 }
507 };
508
509 /*
510 * Default routines for controlling GPIO, based on the original S3C24XX
511 * GPIO functions which deal with the case where each gpio bank of the
512 * chip is as following:
513 *
514 * base + 0x00: Control register, 2 bits per gpio
515 * gpio n: 2 bits starting at (2*n)
516 * 00 = input, 01 = output, others mean special-function
517 * base + 0x04: Data register, 1 bit per gpio
518 * bit n: data bit n
519 */
520
521 static int samsung_gpiolib_2bit_input(struct gpio_chip *chip, unsigned offset)
522 {
523 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
524 void __iomem *base = ourchip->base;
525 unsigned long flags;
526 unsigned long con;
527
528 samsung_gpio_lock(ourchip, flags);
529
530 con = __raw_readl(base + 0x00);
531 con &= ~(3 << (offset * 2));
532
533 __raw_writel(con, base + 0x00);
534
535 samsung_gpio_unlock(ourchip, flags);
536 return 0;
537 }
538
539 static int samsung_gpiolib_2bit_output(struct gpio_chip *chip,
540 unsigned offset, int value)
541 {
542 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
543 void __iomem *base = ourchip->base;
544 unsigned long flags;
545 unsigned long dat;
546 unsigned long con;
547
548 samsung_gpio_lock(ourchip, flags);
549
550 dat = __raw_readl(base + 0x04);
551 dat &= ~(1 << offset);
552 if (value)
553 dat |= 1 << offset;
554 __raw_writel(dat, base + 0x04);
555
556 con = __raw_readl(base + 0x00);
557 con &= ~(3 << (offset * 2));
558 con |= 1 << (offset * 2);
559
560 __raw_writel(con, base + 0x00);
561 __raw_writel(dat, base + 0x04);
562
563 samsung_gpio_unlock(ourchip, flags);
564 return 0;
565 }
566
567 /*
568 * The samsung_gpiolib_4bit routines are to control the gpio banks where
569 * the gpio configuration register (GPxCON) has 4 bits per GPIO, as the
570 * following example:
571 *
572 * base + 0x00: Control register, 4 bits per gpio
573 * gpio n: 4 bits starting at (4*n)
574 * 0000 = input, 0001 = output, others mean special-function
575 * base + 0x04: Data register, 1 bit per gpio
576 * bit n: data bit n
577 *
578 * Note, since the data register is one bit per gpio and is at base + 0x4
579 * we can use samsung_gpiolib_get and samsung_gpiolib_set to change the
580 * state of the output.
581 */
582
583 static int samsung_gpiolib_4bit_input(struct gpio_chip *chip,
584 unsigned int offset)
585 {
586 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
587 void __iomem *base = ourchip->base;
588 unsigned long con;
589
590 con = __raw_readl(base + GPIOCON_OFF);
591 if (ourchip->bitmap_gpio_int & BIT(offset))
592 con |= 0xf << con_4bit_shift(offset);
593 else
594 con &= ~(0xf << con_4bit_shift(offset));
595 __raw_writel(con, base + GPIOCON_OFF);
596
597 pr_debug("%s: %p: CON now %08lx\n", __func__, base, con);
598
599 return 0;
600 }
601
602 static int samsung_gpiolib_4bit_output(struct gpio_chip *chip,
603 unsigned int offset, int value)
604 {
605 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
606 void __iomem *base = ourchip->base;
607 unsigned long con;
608 unsigned long dat;
609
610 con = __raw_readl(base + GPIOCON_OFF);
611 con &= ~(0xf << con_4bit_shift(offset));
612 con |= 0x1 << con_4bit_shift(offset);
613
614 dat = __raw_readl(base + GPIODAT_OFF);
615
616 if (value)
617 dat |= 1 << offset;
618 else
619 dat &= ~(1 << offset);
620
621 __raw_writel(dat, base + GPIODAT_OFF);
622 __raw_writel(con, base + GPIOCON_OFF);
623 __raw_writel(dat, base + GPIODAT_OFF);
624
625 pr_debug("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
626
627 return 0;
628 }
629
630 /*
631 * The next set of routines are for the case where the GPIO configuration
632 * registers are 4 bits per GPIO but there is more than one register (the
633 * bank has more than 8 GPIOs.
634 *
635 * This case is the similar to the 4 bit case, but the registers are as
636 * follows:
637 *
638 * base + 0x00: Control register, 4 bits per gpio (lower 8 GPIOs)
639 * gpio n: 4 bits starting at (4*n)
640 * 0000 = input, 0001 = output, others mean special-function
641 * base + 0x04: Control register, 4 bits per gpio (up to 8 additions GPIOs)
642 * gpio n: 4 bits starting at (4*n)
643 * 0000 = input, 0001 = output, others mean special-function
644 * base + 0x08: Data register, 1 bit per gpio
645 * bit n: data bit n
646 *
647 * To allow us to use the samsung_gpiolib_get and samsung_gpiolib_set
648 * routines we store the 'base + 0x4' address so that these routines see
649 * the data register at ourchip->base + 0x04.
650 */
651
652 static int samsung_gpiolib_4bit2_input(struct gpio_chip *chip,
653 unsigned int offset)
654 {
655 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
656 void __iomem *base = ourchip->base;
657 void __iomem *regcon = base;
658 unsigned long con;
659
660 if (offset > 7)
661 offset -= 8;
662 else
663 regcon -= 4;
664
665 con = __raw_readl(regcon);
666 con &= ~(0xf << con_4bit_shift(offset));
667 __raw_writel(con, regcon);
668
669 pr_debug("%s: %p: CON %08lx\n", __func__, base, con);
670
671 return 0;
672 }
673
674 static int samsung_gpiolib_4bit2_output(struct gpio_chip *chip,
675 unsigned int offset, int value)
676 {
677 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
678 void __iomem *base = ourchip->base;
679 void __iomem *regcon = base;
680 unsigned long con;
681 unsigned long dat;
682 unsigned con_offset = offset;
683
684 if (con_offset > 7)
685 con_offset -= 8;
686 else
687 regcon -= 4;
688
689 con = __raw_readl(regcon);
690 con &= ~(0xf << con_4bit_shift(con_offset));
691 con |= 0x1 << con_4bit_shift(con_offset);
692
693 dat = __raw_readl(base + GPIODAT_OFF);
694
695 if (value)
696 dat |= 1 << offset;
697 else
698 dat &= ~(1 << offset);
699
700 __raw_writel(dat, base + GPIODAT_OFF);
701 __raw_writel(con, regcon);
702 __raw_writel(dat, base + GPIODAT_OFF);
703
704 pr_debug("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
705
706 return 0;
707 }
708
709 #ifdef CONFIG_PLAT_S3C24XX
710 /* The next set of routines are for the case of s3c24xx bank a */
711
712 static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
713 {
714 return -EINVAL;
715 }
716
717 static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
718 unsigned offset, int value)
719 {
720 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
721 void __iomem *base = ourchip->base;
722 unsigned long flags;
723 unsigned long dat;
724 unsigned long con;
725
726 local_irq_save(flags);
727
728 con = __raw_readl(base + 0x00);
729 dat = __raw_readl(base + 0x04);
730
731 dat &= ~(1 << offset);
732 if (value)
733 dat |= 1 << offset;
734
735 __raw_writel(dat, base + 0x04);
736
737 con &= ~(1 << offset);
738
739 __raw_writel(con, base + 0x00);
740 __raw_writel(dat, base + 0x04);
741
742 local_irq_restore(flags);
743 return 0;
744 }
745 #endif
746
747 /* The next set of routines are for the case of s5p64x0 bank r */
748
749 static int s5p64x0_gpiolib_rbank_input(struct gpio_chip *chip,
750 unsigned int offset)
751 {
752 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
753 void __iomem *base = ourchip->base;
754 void __iomem *regcon = base;
755 unsigned long con;
756 unsigned long flags;
757
758 switch (offset) {
759 case 6:
760 offset += 1;
761 case 0:
762 case 1:
763 case 2:
764 case 3:
765 case 4:
766 case 5:
767 regcon -= 4;
768 break;
769 default:
770 offset -= 7;
771 break;
772 }
773
774 samsung_gpio_lock(ourchip, flags);
775
776 con = __raw_readl(regcon);
777 con &= ~(0xf << con_4bit_shift(offset));
778 __raw_writel(con, regcon);
779
780 samsung_gpio_unlock(ourchip, flags);
781
782 return 0;
783 }
784
785 static int s5p64x0_gpiolib_rbank_output(struct gpio_chip *chip,
786 unsigned int offset, int value)
787 {
788 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
789 void __iomem *base = ourchip->base;
790 void __iomem *regcon = base;
791 unsigned long con;
792 unsigned long dat;
793 unsigned long flags;
794 unsigned con_offset = offset;
795
796 switch (con_offset) {
797 case 6:
798 con_offset += 1;
799 case 0:
800 case 1:
801 case 2:
802 case 3:
803 case 4:
804 case 5:
805 regcon -= 4;
806 break;
807 default:
808 con_offset -= 7;
809 break;
810 }
811
812 samsung_gpio_lock(ourchip, flags);
813
814 con = __raw_readl(regcon);
815 con &= ~(0xf << con_4bit_shift(con_offset));
816 con |= 0x1 << con_4bit_shift(con_offset);
817
818 dat = __raw_readl(base + GPIODAT_OFF);
819 if (value)
820 dat |= 1 << offset;
821 else
822 dat &= ~(1 << offset);
823
824 __raw_writel(con, regcon);
825 __raw_writel(dat, base + GPIODAT_OFF);
826
827 samsung_gpio_unlock(ourchip, flags);
828
829 return 0;
830 }
831
832 static void samsung_gpiolib_set(struct gpio_chip *chip,
833 unsigned offset, int value)
834 {
835 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
836 void __iomem *base = ourchip->base;
837 unsigned long flags;
838 unsigned long dat;
839
840 samsung_gpio_lock(ourchip, flags);
841
842 dat = __raw_readl(base + 0x04);
843 dat &= ~(1 << offset);
844 if (value)
845 dat |= 1 << offset;
846 __raw_writel(dat, base + 0x04);
847
848 samsung_gpio_unlock(ourchip, flags);
849 }
850
851 static int samsung_gpiolib_get(struct gpio_chip *chip, unsigned offset)
852 {
853 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
854 unsigned long val;
855
856 val = __raw_readl(ourchip->base + 0x04);
857 val >>= offset;
858 val &= 1;
859
860 return val;
861 }
862
863 /*
864 * CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios
865 * for use with the configuration calls, and other parts of the s3c gpiolib
866 * support code.
867 *
868 * Not all s3c support code will need this, as some configurations of cpu
869 * may only support one or two different configuration options and have an
870 * easy gpio to samsung_gpio_chip mapping function. If this is the case, then
871 * the machine support file should provide its own samsung_gpiolib_getchip()
872 * and any other necessary functions.
873 */
874
875 #ifdef CONFIG_S3C_GPIO_TRACK
876 struct samsung_gpio_chip *s3c_gpios[S3C_GPIO_END];
877
878 static __init void s3c_gpiolib_track(struct samsung_gpio_chip *chip)
879 {
880 unsigned int gpn;
881 int i;
882
883 gpn = chip->chip.base;
884 for (i = 0; i < chip->chip.ngpio; i++, gpn++) {
885 BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios));
886 s3c_gpios[gpn] = chip;
887 }
888 }
889 #endif /* CONFIG_S3C_GPIO_TRACK */
890
891 /*
892 * samsung_gpiolib_add() - add the Samsung gpio_chip.
893 * @chip: The chip to register
894 *
895 * This is a wrapper to gpiochip_add() that takes our specific gpio chip
896 * information and makes the necessary alterations for the platform and
897 * notes the information for use with the configuration systems and any
898 * other parts of the system.
899 */
900
901 static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip)
902 {
903 struct gpio_chip *gc = &chip->chip;
904 int ret;
905
906 BUG_ON(!chip->base);
907 BUG_ON(!gc->label);
908 BUG_ON(!gc->ngpio);
909
910 spin_lock_init(&chip->lock);
911
912 if (!gc->direction_input)
913 gc->direction_input = samsung_gpiolib_2bit_input;
914 if (!gc->direction_output)
915 gc->direction_output = samsung_gpiolib_2bit_output;
916 if (!gc->set)
917 gc->set = samsung_gpiolib_set;
918 if (!gc->get)
919 gc->get = samsung_gpiolib_get;
920
921 #ifdef CONFIG_PM
922 if (chip->pm != NULL) {
923 if (!chip->pm->save || !chip->pm->resume)
924 pr_err("gpio: %s has missing PM functions\n",
925 gc->label);
926 } else
927 pr_err("gpio: %s has no PM function\n", gc->label);
928 #endif
929
930 /* gpiochip_add() prints own failure message on error. */
931 ret = gpiochip_add(gc);
932 if (ret >= 0)
933 s3c_gpiolib_track(chip);
934 }
935
936 static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
937 int nr_chips, void __iomem *base)
938 {
939 int i;
940 struct gpio_chip *gc = &chip->chip;
941
942 for (i = 0 ; i < nr_chips; i++, chip++) {
943 /* skip banks not present on SoC */
944 if (chip->chip.base >= S3C_GPIO_END)
945 continue;
946
947 if (!chip->config)
948 chip->config = &s3c24xx_gpiocfg_default;
949 if (!chip->pm)
950 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
951 if ((base != NULL) && (chip->base == NULL))
952 chip->base = base + ((i) * 0x10);
953
954 if (!gc->direction_input)
955 gc->direction_input = samsung_gpiolib_2bit_input;
956 if (!gc->direction_output)
957 gc->direction_output = samsung_gpiolib_2bit_output;
958
959 samsung_gpiolib_add(chip);
960 }
961 }
962
963 static void __init samsung_gpiolib_add_2bit_chips(struct samsung_gpio_chip *chip,
964 int nr_chips, void __iomem *base,
965 unsigned int offset)
966 {
967 int i;
968
969 for (i = 0 ; i < nr_chips; i++, chip++) {
970 chip->chip.direction_input = samsung_gpiolib_2bit_input;
971 chip->chip.direction_output = samsung_gpiolib_2bit_output;
972
973 if (!chip->config)
974 chip->config = &samsung_gpio_cfgs[7];
975 if (!chip->pm)
976 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
977 if ((base != NULL) && (chip->base == NULL))
978 chip->base = base + ((i) * offset);
979
980 samsung_gpiolib_add(chip);
981 }
982 }
983
984 /*
985 * samsung_gpiolib_add_4bit_chips - 4bit single register GPIO config.
986 * @chip: The gpio chip that is being configured.
987 * @nr_chips: The no of chips (gpio ports) for the GPIO being configured.
988 *
989 * This helper deal with the GPIO cases where the control register has 4 bits
990 * of control per GPIO, generally in the form of:
991 * 0000 = Input
992 * 0001 = Output
993 * others = Special functions (dependent on bank)
994 *
995 * Note, since the code to deal with the case where there are two control
996 * registers instead of one, we do not have a separate set of function
997 * (samsung_gpiolib_add_4bit2_chips)for each case.
998 */
999
1000 static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip,
1001 int nr_chips, void __iomem *base)
1002 {
1003 int i;
1004
1005 for (i = 0 ; i < nr_chips; i++, chip++) {
1006 chip->chip.direction_input = samsung_gpiolib_4bit_input;
1007 chip->chip.direction_output = samsung_gpiolib_4bit_output;
1008
1009 if (!chip->config)
1010 chip->config = &samsung_gpio_cfgs[2];
1011 if (!chip->pm)
1012 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1013 if ((base != NULL) && (chip->base == NULL))
1014 chip->base = base + ((i) * 0x20);
1015
1016 chip->bitmap_gpio_int = 0;
1017
1018 samsung_gpiolib_add(chip);
1019 }
1020 }
1021
1022 static void __init samsung_gpiolib_add_4bit2_chips(struct samsung_gpio_chip *chip,
1023 int nr_chips)
1024 {
1025 for (; nr_chips > 0; nr_chips--, chip++) {
1026 chip->chip.direction_input = samsung_gpiolib_4bit2_input;
1027 chip->chip.direction_output = samsung_gpiolib_4bit2_output;
1028
1029 if (!chip->config)
1030 chip->config = &samsung_gpio_cfgs[2];
1031 if (!chip->pm)
1032 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1033
1034 samsung_gpiolib_add(chip);
1035 }
1036 }
1037
1038 static void __init s5p64x0_gpiolib_add_rbank(struct samsung_gpio_chip *chip,
1039 int nr_chips)
1040 {
1041 for (; nr_chips > 0; nr_chips--, chip++) {
1042 chip->chip.direction_input = s5p64x0_gpiolib_rbank_input;
1043 chip->chip.direction_output = s5p64x0_gpiolib_rbank_output;
1044
1045 if (!chip->pm)
1046 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1047
1048 samsung_gpiolib_add(chip);
1049 }
1050 }
1051
1052 int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
1053 {
1054 struct samsung_gpio_chip *samsung_chip = container_of(chip, struct samsung_gpio_chip, chip);
1055
1056 return samsung_chip->irq_base + offset;
1057 }
1058
1059 #ifdef CONFIG_PLAT_S3C24XX
1060 static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
1061 {
1062 if (offset < 4) {
1063 if (soc_is_s3c2412())
1064 return IRQ_EINT0_2412 + offset;
1065 else
1066 return IRQ_EINT0 + offset;
1067 }
1068
1069 if (offset < 8)
1070 return IRQ_EINT4 + offset - 4;
1071
1072 return -EINVAL;
1073 }
1074 #endif
1075
1076 #ifdef CONFIG_PLAT_S3C64XX
1077 static int s3c64xx_gpiolib_mbank_to_irq(struct gpio_chip *chip, unsigned pin)
1078 {
1079 return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
1080 }
1081
1082 static int s3c64xx_gpiolib_lbank_to_irq(struct gpio_chip *chip, unsigned pin)
1083 {
1084 return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
1085 }
1086 #endif
1087
1088 struct samsung_gpio_chip s3c24xx_gpios[] = {
1089 #ifdef CONFIG_PLAT_S3C24XX
1090 {
1091 .config = &s3c24xx_gpiocfg_banka,
1092 .chip = {
1093 .base = S3C2410_GPA(0),
1094 .owner = THIS_MODULE,
1095 .label = "GPIOA",
1096 .ngpio = 24,
1097 .direction_input = s3c24xx_gpiolib_banka_input,
1098 .direction_output = s3c24xx_gpiolib_banka_output,
1099 },
1100 }, {
1101 .chip = {
1102 .base = S3C2410_GPB(0),
1103 .owner = THIS_MODULE,
1104 .label = "GPIOB",
1105 .ngpio = 16,
1106 },
1107 }, {
1108 .chip = {
1109 .base = S3C2410_GPC(0),
1110 .owner = THIS_MODULE,
1111 .label = "GPIOC",
1112 .ngpio = 16,
1113 },
1114 }, {
1115 .chip = {
1116 .base = S3C2410_GPD(0),
1117 .owner = THIS_MODULE,
1118 .label = "GPIOD",
1119 .ngpio = 16,
1120 },
1121 }, {
1122 .chip = {
1123 .base = S3C2410_GPE(0),
1124 .label = "GPIOE",
1125 .owner = THIS_MODULE,
1126 .ngpio = 16,
1127 },
1128 }, {
1129 .chip = {
1130 .base = S3C2410_GPF(0),
1131 .owner = THIS_MODULE,
1132 .label = "GPIOF",
1133 .ngpio = 8,
1134 .to_irq = s3c24xx_gpiolib_fbank_to_irq,
1135 },
1136 }, {
1137 .irq_base = IRQ_EINT8,
1138 .chip = {
1139 .base = S3C2410_GPG(0),
1140 .owner = THIS_MODULE,
1141 .label = "GPIOG",
1142 .ngpio = 16,
1143 .to_irq = samsung_gpiolib_to_irq,
1144 },
1145 }, {
1146 .chip = {
1147 .base = S3C2410_GPH(0),
1148 .owner = THIS_MODULE,
1149 .label = "GPIOH",
1150 .ngpio = 11,
1151 },
1152 },
1153 /* GPIOS for the S3C2443 and later devices. */
1154 {
1155 .base = S3C2440_GPJCON,
1156 .chip = {
1157 .base = S3C2410_GPJ(0),
1158 .owner = THIS_MODULE,
1159 .label = "GPIOJ",
1160 .ngpio = 16,
1161 },
1162 }, {
1163 .base = S3C2443_GPKCON,
1164 .chip = {
1165 .base = S3C2410_GPK(0),
1166 .owner = THIS_MODULE,
1167 .label = "GPIOK",
1168 .ngpio = 16,
1169 },
1170 }, {
1171 .base = S3C2443_GPLCON,
1172 .chip = {
1173 .base = S3C2410_GPL(0),
1174 .owner = THIS_MODULE,
1175 .label = "GPIOL",
1176 .ngpio = 15,
1177 },
1178 }, {
1179 .base = S3C2443_GPMCON,
1180 .chip = {
1181 .base = S3C2410_GPM(0),
1182 .owner = THIS_MODULE,
1183 .label = "GPIOM",
1184 .ngpio = 2,
1185 },
1186 },
1187 #endif
1188 };
1189
1190 /*
1191 * GPIO bank summary:
1192 *
1193 * Bank GPIOs Style SlpCon ExtInt Group
1194 * A 8 4Bit Yes 1
1195 * B 7 4Bit Yes 1
1196 * C 8 4Bit Yes 2
1197 * D 5 4Bit Yes 3
1198 * E 5 4Bit Yes None
1199 * F 16 2Bit Yes 4 [1]
1200 * G 7 4Bit Yes 5
1201 * H 10 4Bit[2] Yes 6
1202 * I 16 2Bit Yes None
1203 * J 12 2Bit Yes None
1204 * K 16 4Bit[2] No None
1205 * L 15 4Bit[2] No None
1206 * M 6 4Bit No IRQ_EINT
1207 * N 16 2Bit No IRQ_EINT
1208 * O 16 2Bit Yes 7
1209 * P 15 2Bit Yes 8
1210 * Q 9 2Bit Yes 9
1211 *
1212 * [1] BANKF pins 14,15 do not form part of the external interrupt sources
1213 * [2] BANK has two control registers, GPxCON0 and GPxCON1
1214 */
1215
1216 static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = {
1217 #ifdef CONFIG_PLAT_S3C64XX
1218 {
1219 .chip = {
1220 .base = S3C64XX_GPA(0),
1221 .ngpio = S3C64XX_GPIO_A_NR,
1222 .label = "GPA",
1223 },
1224 }, {
1225 .chip = {
1226 .base = S3C64XX_GPB(0),
1227 .ngpio = S3C64XX_GPIO_B_NR,
1228 .label = "GPB",
1229 },
1230 }, {
1231 .chip = {
1232 .base = S3C64XX_GPC(0),
1233 .ngpio = S3C64XX_GPIO_C_NR,
1234 .label = "GPC",
1235 },
1236 }, {
1237 .chip = {
1238 .base = S3C64XX_GPD(0),
1239 .ngpio = S3C64XX_GPIO_D_NR,
1240 .label = "GPD",
1241 },
1242 }, {
1243 .config = &samsung_gpio_cfgs[0],
1244 .chip = {
1245 .base = S3C64XX_GPE(0),
1246 .ngpio = S3C64XX_GPIO_E_NR,
1247 .label = "GPE",
1248 },
1249 }, {
1250 .base = S3C64XX_GPG_BASE,
1251 .chip = {
1252 .base = S3C64XX_GPG(0),
1253 .ngpio = S3C64XX_GPIO_G_NR,
1254 .label = "GPG",
1255 },
1256 }, {
1257 .base = S3C64XX_GPM_BASE,
1258 .config = &samsung_gpio_cfgs[1],
1259 .chip = {
1260 .base = S3C64XX_GPM(0),
1261 .ngpio = S3C64XX_GPIO_M_NR,
1262 .label = "GPM",
1263 .to_irq = s3c64xx_gpiolib_mbank_to_irq,
1264 },
1265 },
1266 #endif
1267 };
1268
1269 static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = {
1270 #ifdef CONFIG_PLAT_S3C64XX
1271 {
1272 .base = S3C64XX_GPH_BASE + 0x4,
1273 .chip = {
1274 .base = S3C64XX_GPH(0),
1275 .ngpio = S3C64XX_GPIO_H_NR,
1276 .label = "GPH",
1277 },
1278 }, {
1279 .base = S3C64XX_GPK_BASE + 0x4,
1280 .config = &samsung_gpio_cfgs[0],
1281 .chip = {
1282 .base = S3C64XX_GPK(0),
1283 .ngpio = S3C64XX_GPIO_K_NR,
1284 .label = "GPK",
1285 },
1286 }, {
1287 .base = S3C64XX_GPL_BASE + 0x4,
1288 .config = &samsung_gpio_cfgs[1],
1289 .chip = {
1290 .base = S3C64XX_GPL(0),
1291 .ngpio = S3C64XX_GPIO_L_NR,
1292 .label = "GPL",
1293 .to_irq = s3c64xx_gpiolib_lbank_to_irq,
1294 },
1295 },
1296 #endif
1297 };
1298
1299 static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = {
1300 #ifdef CONFIG_PLAT_S3C64XX
1301 {
1302 .base = S3C64XX_GPF_BASE,
1303 .config = &samsung_gpio_cfgs[6],
1304 .chip = {
1305 .base = S3C64XX_GPF(0),
1306 .ngpio = S3C64XX_GPIO_F_NR,
1307 .label = "GPF",
1308 },
1309 }, {
1310 .config = &samsung_gpio_cfgs[7],
1311 .chip = {
1312 .base = S3C64XX_GPI(0),
1313 .ngpio = S3C64XX_GPIO_I_NR,
1314 .label = "GPI",
1315 },
1316 }, {
1317 .config = &samsung_gpio_cfgs[7],
1318 .chip = {
1319 .base = S3C64XX_GPJ(0),
1320 .ngpio = S3C64XX_GPIO_J_NR,
1321 .label = "GPJ",
1322 },
1323 }, {
1324 .config = &samsung_gpio_cfgs[6],
1325 .chip = {
1326 .base = S3C64XX_GPO(0),
1327 .ngpio = S3C64XX_GPIO_O_NR,
1328 .label = "GPO",
1329 },
1330 }, {
1331 .config = &samsung_gpio_cfgs[6],
1332 .chip = {
1333 .base = S3C64XX_GPP(0),
1334 .ngpio = S3C64XX_GPIO_P_NR,
1335 .label = "GPP",
1336 },
1337 }, {
1338 .config = &samsung_gpio_cfgs[6],
1339 .chip = {
1340 .base = S3C64XX_GPQ(0),
1341 .ngpio = S3C64XX_GPIO_Q_NR,
1342 .label = "GPQ",
1343 },
1344 }, {
1345 .base = S3C64XX_GPN_BASE,
1346 .irq_base = IRQ_EINT(0),
1347 .config = &samsung_gpio_cfgs[5],
1348 .chip = {
1349 .base = S3C64XX_GPN(0),
1350 .ngpio = S3C64XX_GPIO_N_NR,
1351 .label = "GPN",
1352 .to_irq = samsung_gpiolib_to_irq,
1353 },
1354 },
1355 #endif
1356 };
1357
1358 /*
1359 * S5P6440 GPIO bank summary:
1360 *
1361 * Bank GPIOs Style SlpCon ExtInt Group
1362 * A 6 4Bit Yes 1
1363 * B 7 4Bit Yes 1
1364 * C 8 4Bit Yes 2
1365 * F 2 2Bit Yes 4 [1]
1366 * G 7 4Bit Yes 5
1367 * H 10 4Bit[2] Yes 6
1368 * I 16 2Bit Yes None
1369 * J 12 2Bit Yes None
1370 * N 16 2Bit No IRQ_EINT
1371 * P 8 2Bit Yes 8
1372 * R 15 4Bit[2] Yes 8
1373 */
1374
1375 static struct samsung_gpio_chip s5p6440_gpios_4bit[] = {
1376 #ifdef CONFIG_CPU_S5P6440
1377 {
1378 .chip = {
1379 .base = S5P6440_GPA(0),
1380 .ngpio = S5P6440_GPIO_A_NR,
1381 .label = "GPA",
1382 },
1383 }, {
1384 .chip = {
1385 .base = S5P6440_GPB(0),
1386 .ngpio = S5P6440_GPIO_B_NR,
1387 .label = "GPB",
1388 },
1389 }, {
1390 .chip = {
1391 .base = S5P6440_GPC(0),
1392 .ngpio = S5P6440_GPIO_C_NR,
1393 .label = "GPC",
1394 },
1395 }, {
1396 .base = S5P64X0_GPG_BASE,
1397 .chip = {
1398 .base = S5P6440_GPG(0),
1399 .ngpio = S5P6440_GPIO_G_NR,
1400 .label = "GPG",
1401 },
1402 },
1403 #endif
1404 };
1405
1406 static struct samsung_gpio_chip s5p6440_gpios_4bit2[] = {
1407 #ifdef CONFIG_CPU_S5P6440
1408 {
1409 .base = S5P64X0_GPH_BASE + 0x4,
1410 .chip = {
1411 .base = S5P6440_GPH(0),
1412 .ngpio = S5P6440_GPIO_H_NR,
1413 .label = "GPH",
1414 },
1415 },
1416 #endif
1417 };
1418
1419 static struct samsung_gpio_chip s5p6440_gpios_rbank[] = {
1420 #ifdef CONFIG_CPU_S5P6440
1421 {
1422 .base = S5P64X0_GPR_BASE + 0x4,
1423 .config = &s5p64x0_gpio_cfg_rbank,
1424 .chip = {
1425 .base = S5P6440_GPR(0),
1426 .ngpio = S5P6440_GPIO_R_NR,
1427 .label = "GPR",
1428 },
1429 },
1430 #endif
1431 };
1432
1433 static struct samsung_gpio_chip s5p6440_gpios_2bit[] = {
1434 #ifdef CONFIG_CPU_S5P6440
1435 {
1436 .base = S5P64X0_GPF_BASE,
1437 .config = &samsung_gpio_cfgs[6],
1438 .chip = {
1439 .base = S5P6440_GPF(0),
1440 .ngpio = S5P6440_GPIO_F_NR,
1441 .label = "GPF",
1442 },
1443 }, {
1444 .base = S5P64X0_GPI_BASE,
1445 .config = &samsung_gpio_cfgs[4],
1446 .chip = {
1447 .base = S5P6440_GPI(0),
1448 .ngpio = S5P6440_GPIO_I_NR,
1449 .label = "GPI",
1450 },
1451 }, {
1452 .base = S5P64X0_GPJ_BASE,
1453 .config = &samsung_gpio_cfgs[4],
1454 .chip = {
1455 .base = S5P6440_GPJ(0),
1456 .ngpio = S5P6440_GPIO_J_NR,
1457 .label = "GPJ",
1458 },
1459 }, {
1460 .base = S5P64X0_GPN_BASE,
1461 .config = &samsung_gpio_cfgs[5],
1462 .chip = {
1463 .base = S5P6440_GPN(0),
1464 .ngpio = S5P6440_GPIO_N_NR,
1465 .label = "GPN",
1466 },
1467 }, {
1468 .base = S5P64X0_GPP_BASE,
1469 .config = &samsung_gpio_cfgs[6],
1470 .chip = {
1471 .base = S5P6440_GPP(0),
1472 .ngpio = S5P6440_GPIO_P_NR,
1473 .label = "GPP",
1474 },
1475 },
1476 #endif
1477 };
1478
1479 /*
1480 * S5P6450 GPIO bank summary:
1481 *
1482 * Bank GPIOs Style SlpCon ExtInt Group
1483 * A 6 4Bit Yes 1
1484 * B 7 4Bit Yes 1
1485 * C 8 4Bit Yes 2
1486 * D 8 4Bit Yes None
1487 * F 2 2Bit Yes None
1488 * G 14 4Bit[2] Yes 5
1489 * H 10 4Bit[2] Yes 6
1490 * I 16 2Bit Yes None
1491 * J 12 2Bit Yes None
1492 * K 5 4Bit Yes None
1493 * N 16 2Bit No IRQ_EINT
1494 * P 11 2Bit Yes 8
1495 * Q 14 2Bit Yes None
1496 * R 15 4Bit[2] Yes None
1497 * S 8 2Bit Yes None
1498 *
1499 * [1] BANKF pins 14,15 do not form part of the external interrupt sources
1500 * [2] BANK has two control registers, GPxCON0 and GPxCON1
1501 */
1502
1503 static struct samsung_gpio_chip s5p6450_gpios_4bit[] = {
1504 #ifdef CONFIG_CPU_S5P6450
1505 {
1506 .chip = {
1507 .base = S5P6450_GPA(0),
1508 .ngpio = S5P6450_GPIO_A_NR,
1509 .label = "GPA",
1510 },
1511 }, {
1512 .chip = {
1513 .base = S5P6450_GPB(0),
1514 .ngpio = S5P6450_GPIO_B_NR,
1515 .label = "GPB",
1516 },
1517 }, {
1518 .chip = {
1519 .base = S5P6450_GPC(0),
1520 .ngpio = S5P6450_GPIO_C_NR,
1521 .label = "GPC",
1522 },
1523 }, {
1524 .chip = {
1525 .base = S5P6450_GPD(0),
1526 .ngpio = S5P6450_GPIO_D_NR,
1527 .label = "GPD",
1528 },
1529 }, {
1530 .base = S5P6450_GPK_BASE,
1531 .chip = {
1532 .base = S5P6450_GPK(0),
1533 .ngpio = S5P6450_GPIO_K_NR,
1534 .label = "GPK",
1535 },
1536 },
1537 #endif
1538 };
1539
1540 static struct samsung_gpio_chip s5p6450_gpios_4bit2[] = {
1541 #ifdef CONFIG_CPU_S5P6450
1542 {
1543 .base = S5P64X0_GPG_BASE + 0x4,
1544 .chip = {
1545 .base = S5P6450_GPG(0),
1546 .ngpio = S5P6450_GPIO_G_NR,
1547 .label = "GPG",
1548 },
1549 }, {
1550 .base = S5P64X0_GPH_BASE + 0x4,
1551 .chip = {
1552 .base = S5P6450_GPH(0),
1553 .ngpio = S5P6450_GPIO_H_NR,
1554 .label = "GPH",
1555 },
1556 },
1557 #endif
1558 };
1559
1560 static struct samsung_gpio_chip s5p6450_gpios_rbank[] = {
1561 #ifdef CONFIG_CPU_S5P6450
1562 {
1563 .base = S5P64X0_GPR_BASE + 0x4,
1564 .config = &s5p64x0_gpio_cfg_rbank,
1565 .chip = {
1566 .base = S5P6450_GPR(0),
1567 .ngpio = S5P6450_GPIO_R_NR,
1568 .label = "GPR",
1569 },
1570 },
1571 #endif
1572 };
1573
1574 static struct samsung_gpio_chip s5p6450_gpios_2bit[] = {
1575 #ifdef CONFIG_CPU_S5P6450
1576 {
1577 .base = S5P64X0_GPF_BASE,
1578 .config = &samsung_gpio_cfgs[6],
1579 .chip = {
1580 .base = S5P6450_GPF(0),
1581 .ngpio = S5P6450_GPIO_F_NR,
1582 .label = "GPF",
1583 },
1584 }, {
1585 .base = S5P64X0_GPI_BASE,
1586 .config = &samsung_gpio_cfgs[4],
1587 .chip = {
1588 .base = S5P6450_GPI(0),
1589 .ngpio = S5P6450_GPIO_I_NR,
1590 .label = "GPI",
1591 },
1592 }, {
1593 .base = S5P64X0_GPJ_BASE,
1594 .config = &samsung_gpio_cfgs[4],
1595 .chip = {
1596 .base = S5P6450_GPJ(0),
1597 .ngpio = S5P6450_GPIO_J_NR,
1598 .label = "GPJ",
1599 },
1600 }, {
1601 .base = S5P64X0_GPN_BASE,
1602 .config = &samsung_gpio_cfgs[5],
1603 .chip = {
1604 .base = S5P6450_GPN(0),
1605 .ngpio = S5P6450_GPIO_N_NR,
1606 .label = "GPN",
1607 },
1608 }, {
1609 .base = S5P64X0_GPP_BASE,
1610 .config = &samsung_gpio_cfgs[6],
1611 .chip = {
1612 .base = S5P6450_GPP(0),
1613 .ngpio = S5P6450_GPIO_P_NR,
1614 .label = "GPP",
1615 },
1616 }, {
1617 .base = S5P6450_GPQ_BASE,
1618 .config = &samsung_gpio_cfgs[5],
1619 .chip = {
1620 .base = S5P6450_GPQ(0),
1621 .ngpio = S5P6450_GPIO_Q_NR,
1622 .label = "GPQ",
1623 },
1624 }, {
1625 .base = S5P6450_GPS_BASE,
1626 .config = &samsung_gpio_cfgs[6],
1627 .chip = {
1628 .base = S5P6450_GPS(0),
1629 .ngpio = S5P6450_GPIO_S_NR,
1630 .label = "GPS",
1631 },
1632 },
1633 #endif
1634 };
1635
1636 /*
1637 * S5PC100 GPIO bank summary:
1638 *
1639 * Bank GPIOs Style INT Type
1640 * A0 8 4Bit GPIO_INT0
1641 * A1 5 4Bit GPIO_INT1
1642 * B 8 4Bit GPIO_INT2
1643 * C 5 4Bit GPIO_INT3
1644 * D 7 4Bit GPIO_INT4
1645 * E0 8 4Bit GPIO_INT5
1646 * E1 6 4Bit GPIO_INT6
1647 * F0 8 4Bit GPIO_INT7
1648 * F1 8 4Bit GPIO_INT8
1649 * F2 8 4Bit GPIO_INT9
1650 * F3 4 4Bit GPIO_INT10
1651 * G0 8 4Bit GPIO_INT11
1652 * G1 3 4Bit GPIO_INT12
1653 * G2 7 4Bit GPIO_INT13
1654 * G3 7 4Bit GPIO_INT14
1655 * H0 8 4Bit WKUP_INT
1656 * H1 8 4Bit WKUP_INT
1657 * H2 8 4Bit WKUP_INT
1658 * H3 8 4Bit WKUP_INT
1659 * I 8 4Bit GPIO_INT15
1660 * J0 8 4Bit GPIO_INT16
1661 * J1 5 4Bit GPIO_INT17
1662 * J2 8 4Bit GPIO_INT18
1663 * J3 8 4Bit GPIO_INT19
1664 * J4 4 4Bit GPIO_INT20
1665 * K0 8 4Bit None
1666 * K1 6 4Bit None
1667 * K2 8 4Bit None
1668 * K3 8 4Bit None
1669 * L0 8 4Bit None
1670 * L1 8 4Bit None
1671 * L2 8 4Bit None
1672 * L3 8 4Bit None
1673 */
1674
1675 static struct samsung_gpio_chip s5pc100_gpios_4bit[] = {
1676 #ifdef CONFIG_CPU_S5PC100
1677 {
1678 .chip = {
1679 .base = S5PC100_GPA0(0),
1680 .ngpio = S5PC100_GPIO_A0_NR,
1681 .label = "GPA0",
1682 },
1683 }, {
1684 .chip = {
1685 .base = S5PC100_GPA1(0),
1686 .ngpio = S5PC100_GPIO_A1_NR,
1687 .label = "GPA1",
1688 },
1689 }, {
1690 .chip = {
1691 .base = S5PC100_GPB(0),
1692 .ngpio = S5PC100_GPIO_B_NR,
1693 .label = "GPB",
1694 },
1695 }, {
1696 .chip = {
1697 .base = S5PC100_GPC(0),
1698 .ngpio = S5PC100_GPIO_C_NR,
1699 .label = "GPC",
1700 },
1701 }, {
1702 .chip = {
1703 .base = S5PC100_GPD(0),
1704 .ngpio = S5PC100_GPIO_D_NR,
1705 .label = "GPD",
1706 },
1707 }, {
1708 .chip = {
1709 .base = S5PC100_GPE0(0),
1710 .ngpio = S5PC100_GPIO_E0_NR,
1711 .label = "GPE0",
1712 },
1713 }, {
1714 .chip = {
1715 .base = S5PC100_GPE1(0),
1716 .ngpio = S5PC100_GPIO_E1_NR,
1717 .label = "GPE1",
1718 },
1719 }, {
1720 .chip = {
1721 .base = S5PC100_GPF0(0),
1722 .ngpio = S5PC100_GPIO_F0_NR,
1723 .label = "GPF0",
1724 },
1725 }, {
1726 .chip = {
1727 .base = S5PC100_GPF1(0),
1728 .ngpio = S5PC100_GPIO_F1_NR,
1729 .label = "GPF1",
1730 },
1731 }, {
1732 .chip = {
1733 .base = S5PC100_GPF2(0),
1734 .ngpio = S5PC100_GPIO_F2_NR,
1735 .label = "GPF2",
1736 },
1737 }, {
1738 .chip = {
1739 .base = S5PC100_GPF3(0),
1740 .ngpio = S5PC100_GPIO_F3_NR,
1741 .label = "GPF3",
1742 },
1743 }, {
1744 .chip = {
1745 .base = S5PC100_GPG0(0),
1746 .ngpio = S5PC100_GPIO_G0_NR,
1747 .label = "GPG0",
1748 },
1749 }, {
1750 .chip = {
1751 .base = S5PC100_GPG1(0),
1752 .ngpio = S5PC100_GPIO_G1_NR,
1753 .label = "GPG1",
1754 },
1755 }, {
1756 .chip = {
1757 .base = S5PC100_GPG2(0),
1758 .ngpio = S5PC100_GPIO_G2_NR,
1759 .label = "GPG2",
1760 },
1761 }, {
1762 .chip = {
1763 .base = S5PC100_GPG3(0),
1764 .ngpio = S5PC100_GPIO_G3_NR,
1765 .label = "GPG3",
1766 },
1767 }, {
1768 .chip = {
1769 .base = S5PC100_GPI(0),
1770 .ngpio = S5PC100_GPIO_I_NR,
1771 .label = "GPI",
1772 },
1773 }, {
1774 .chip = {
1775 .base = S5PC100_GPJ0(0),
1776 .ngpio = S5PC100_GPIO_J0_NR,
1777 .label = "GPJ0",
1778 },
1779 }, {
1780 .chip = {
1781 .base = S5PC100_GPJ1(0),
1782 .ngpio = S5PC100_GPIO_J1_NR,
1783 .label = "GPJ1",
1784 },
1785 }, {
1786 .chip = {
1787 .base = S5PC100_GPJ2(0),
1788 .ngpio = S5PC100_GPIO_J2_NR,
1789 .label = "GPJ2",
1790 },
1791 }, {
1792 .chip = {
1793 .base = S5PC100_GPJ3(0),
1794 .ngpio = S5PC100_GPIO_J3_NR,
1795 .label = "GPJ3",
1796 },
1797 }, {
1798 .chip = {
1799 .base = S5PC100_GPJ4(0),
1800 .ngpio = S5PC100_GPIO_J4_NR,
1801 .label = "GPJ4",
1802 },
1803 }, {
1804 .chip = {
1805 .base = S5PC100_GPK0(0),
1806 .ngpio = S5PC100_GPIO_K0_NR,
1807 .label = "GPK0",
1808 },
1809 }, {
1810 .chip = {
1811 .base = S5PC100_GPK1(0),
1812 .ngpio = S5PC100_GPIO_K1_NR,
1813 .label = "GPK1",
1814 },
1815 }, {
1816 .chip = {
1817 .base = S5PC100_GPK2(0),
1818 .ngpio = S5PC100_GPIO_K2_NR,
1819 .label = "GPK2",
1820 },
1821 }, {
1822 .chip = {
1823 .base = S5PC100_GPK3(0),
1824 .ngpio = S5PC100_GPIO_K3_NR,
1825 .label = "GPK3",
1826 },
1827 }, {
1828 .chip = {
1829 .base = S5PC100_GPL0(0),
1830 .ngpio = S5PC100_GPIO_L0_NR,
1831 .label = "GPL0",
1832 },
1833 }, {
1834 .chip = {
1835 .base = S5PC100_GPL1(0),
1836 .ngpio = S5PC100_GPIO_L1_NR,
1837 .label = "GPL1",
1838 },
1839 }, {
1840 .chip = {
1841 .base = S5PC100_GPL2(0),
1842 .ngpio = S5PC100_GPIO_L2_NR,
1843 .label = "GPL2",
1844 },
1845 }, {
1846 .chip = {
1847 .base = S5PC100_GPL3(0),
1848 .ngpio = S5PC100_GPIO_L3_NR,
1849 .label = "GPL3",
1850 },
1851 }, {
1852 .chip = {
1853 .base = S5PC100_GPL4(0),
1854 .ngpio = S5PC100_GPIO_L4_NR,
1855 .label = "GPL4",
1856 },
1857 }, {
1858 .base = (S5P_VA_GPIO + 0xC00),
1859 .irq_base = IRQ_EINT(0),
1860 .chip = {
1861 .base = S5PC100_GPH0(0),
1862 .ngpio = S5PC100_GPIO_H0_NR,
1863 .label = "GPH0",
1864 .to_irq = samsung_gpiolib_to_irq,
1865 },
1866 }, {
1867 .base = (S5P_VA_GPIO + 0xC20),
1868 .irq_base = IRQ_EINT(8),
1869 .chip = {
1870 .base = S5PC100_GPH1(0),
1871 .ngpio = S5PC100_GPIO_H1_NR,
1872 .label = "GPH1",
1873 .to_irq = samsung_gpiolib_to_irq,
1874 },
1875 }, {
1876 .base = (S5P_VA_GPIO + 0xC40),
1877 .irq_base = IRQ_EINT(16),
1878 .chip = {
1879 .base = S5PC100_GPH2(0),
1880 .ngpio = S5PC100_GPIO_H2_NR,
1881 .label = "GPH2",
1882 .to_irq = samsung_gpiolib_to_irq,
1883 },
1884 }, {
1885 .base = (S5P_VA_GPIO + 0xC60),
1886 .irq_base = IRQ_EINT(24),
1887 .chip = {
1888 .base = S5PC100_GPH3(0),
1889 .ngpio = S5PC100_GPIO_H3_NR,
1890 .label = "GPH3",
1891 .to_irq = samsung_gpiolib_to_irq,
1892 },
1893 },
1894 #endif
1895 };
1896
1897 /*
1898 * Followings are the gpio banks in S5PV210/S5PC110
1899 *
1900 * The 'config' member when left to NULL, is initialized to the default
1901 * structure samsung_gpio_cfgs[3] in the init function below.
1902 *
1903 * The 'base' member is also initialized in the init function below.
1904 * Note: The initialization of 'base' member of samsung_gpio_chip structure
1905 * uses the above macro and depends on the banks being listed in order here.
1906 */
1907
1908 static struct samsung_gpio_chip s5pv210_gpios_4bit[] = {
1909 #ifdef CONFIG_CPU_S5PV210
1910 {
1911 .chip = {
1912 .base = S5PV210_GPA0(0),
1913 .ngpio = S5PV210_GPIO_A0_NR,
1914 .label = "GPA0",
1915 },
1916 }, {
1917 .chip = {
1918 .base = S5PV210_GPA1(0),
1919 .ngpio = S5PV210_GPIO_A1_NR,
1920 .label = "GPA1",
1921 },
1922 }, {
1923 .chip = {
1924 .base = S5PV210_GPB(0),
1925 .ngpio = S5PV210_GPIO_B_NR,
1926 .label = "GPB",
1927 },
1928 }, {
1929 .chip = {
1930 .base = S5PV210_GPC0(0),
1931 .ngpio = S5PV210_GPIO_C0_NR,
1932 .label = "GPC0",
1933 },
1934 }, {
1935 .chip = {
1936 .base = S5PV210_GPC1(0),
1937 .ngpio = S5PV210_GPIO_C1_NR,
1938 .label = "GPC1",
1939 },
1940 }, {
1941 .chip = {
1942 .base = S5PV210_GPD0(0),
1943 .ngpio = S5PV210_GPIO_D0_NR,
1944 .label = "GPD0",
1945 },
1946 }, {
1947 .chip = {
1948 .base = S5PV210_GPD1(0),
1949 .ngpio = S5PV210_GPIO_D1_NR,
1950 .label = "GPD1",
1951 },
1952 }, {
1953 .chip = {
1954 .base = S5PV210_GPE0(0),
1955 .ngpio = S5PV210_GPIO_E0_NR,
1956 .label = "GPE0",
1957 },
1958 }, {
1959 .chip = {
1960 .base = S5PV210_GPE1(0),
1961 .ngpio = S5PV210_GPIO_E1_NR,
1962 .label = "GPE1",
1963 },
1964 }, {
1965 .chip = {
1966 .base = S5PV210_GPF0(0),
1967 .ngpio = S5PV210_GPIO_F0_NR,
1968 .label = "GPF0",
1969 },
1970 }, {
1971 .chip = {
1972 .base = S5PV210_GPF1(0),
1973 .ngpio = S5PV210_GPIO_F1_NR,
1974 .label = "GPF1",
1975 },
1976 }, {
1977 .chip = {
1978 .base = S5PV210_GPF2(0),
1979 .ngpio = S5PV210_GPIO_F2_NR,
1980 .label = "GPF2",
1981 },
1982 }, {
1983 .chip = {
1984 .base = S5PV210_GPF3(0),
1985 .ngpio = S5PV210_GPIO_F3_NR,
1986 .label = "GPF3",
1987 },
1988 }, {
1989 .chip = {
1990 .base = S5PV210_GPG0(0),
1991 .ngpio = S5PV210_GPIO_G0_NR,
1992 .label = "GPG0",
1993 },
1994 }, {
1995 .chip = {
1996 .base = S5PV210_GPG1(0),
1997 .ngpio = S5PV210_GPIO_G1_NR,
1998 .label = "GPG1",
1999 },
2000 }, {
2001 .chip = {
2002 .base = S5PV210_GPG2(0),
2003 .ngpio = S5PV210_GPIO_G2_NR,
2004 .label = "GPG2",
2005 },
2006 }, {
2007 .chip = {
2008 .base = S5PV210_GPG3(0),
2009 .ngpio = S5PV210_GPIO_G3_NR,
2010 .label = "GPG3",
2011 },
2012 }, {
2013 .chip = {
2014 .base = S5PV210_GPI(0),
2015 .ngpio = S5PV210_GPIO_I_NR,
2016 .label = "GPI",
2017 },
2018 }, {
2019 .chip = {
2020 .base = S5PV210_GPJ0(0),
2021 .ngpio = S5PV210_GPIO_J0_NR,
2022 .label = "GPJ0",
2023 },
2024 }, {
2025 .chip = {
2026 .base = S5PV210_GPJ1(0),
2027 .ngpio = S5PV210_GPIO_J1_NR,
2028 .label = "GPJ1",
2029 },
2030 }, {
2031 .chip = {
2032 .base = S5PV210_GPJ2(0),
2033 .ngpio = S5PV210_GPIO_J2_NR,
2034 .label = "GPJ2",
2035 },
2036 }, {
2037 .chip = {
2038 .base = S5PV210_GPJ3(0),
2039 .ngpio = S5PV210_GPIO_J3_NR,
2040 .label = "GPJ3",
2041 },
2042 }, {
2043 .chip = {
2044 .base = S5PV210_GPJ4(0),
2045 .ngpio = S5PV210_GPIO_J4_NR,
2046 .label = "GPJ4",
2047 },
2048 }, {
2049 .chip = {
2050 .base = S5PV210_MP01(0),
2051 .ngpio = S5PV210_GPIO_MP01_NR,
2052 .label = "MP01",
2053 },
2054 }, {
2055 .chip = {
2056 .base = S5PV210_MP02(0),
2057 .ngpio = S5PV210_GPIO_MP02_NR,
2058 .label = "MP02",
2059 },
2060 }, {
2061 .chip = {
2062 .base = S5PV210_MP03(0),
2063 .ngpio = S5PV210_GPIO_MP03_NR,
2064 .label = "MP03",
2065 },
2066 }, {
2067 .chip = {
2068 .base = S5PV210_MP04(0),
2069 .ngpio = S5PV210_GPIO_MP04_NR,
2070 .label = "MP04",
2071 },
2072 }, {
2073 .chip = {
2074 .base = S5PV210_MP05(0),
2075 .ngpio = S5PV210_GPIO_MP05_NR,
2076 .label = "MP05",
2077 },
2078 }, {
2079 .base = (S5P_VA_GPIO + 0xC00),
2080 .irq_base = IRQ_EINT(0),
2081 .chip = {
2082 .base = S5PV210_GPH0(0),
2083 .ngpio = S5PV210_GPIO_H0_NR,
2084 .label = "GPH0",
2085 .to_irq = samsung_gpiolib_to_irq,
2086 },
2087 }, {
2088 .base = (S5P_VA_GPIO + 0xC20),
2089 .irq_base = IRQ_EINT(8),
2090 .chip = {
2091 .base = S5PV210_GPH1(0),
2092 .ngpio = S5PV210_GPIO_H1_NR,
2093 .label = "GPH1",
2094 .to_irq = samsung_gpiolib_to_irq,
2095 },
2096 }, {
2097 .base = (S5P_VA_GPIO + 0xC40),
2098 .irq_base = IRQ_EINT(16),
2099 .chip = {
2100 .base = S5PV210_GPH2(0),
2101 .ngpio = S5PV210_GPIO_H2_NR,
2102 .label = "GPH2",
2103 .to_irq = samsung_gpiolib_to_irq,
2104 },
2105 }, {
2106 .base = (S5P_VA_GPIO + 0xC60),
2107 .irq_base = IRQ_EINT(24),
2108 .chip = {
2109 .base = S5PV210_GPH3(0),
2110 .ngpio = S5PV210_GPIO_H3_NR,
2111 .label = "GPH3",
2112 .to_irq = samsung_gpiolib_to_irq,
2113 },
2114 },
2115 #endif
2116 };
2117
2118 /*
2119 * Followings are the gpio banks in EXYNOS SoCs
2120 *
2121 * The 'config' member when left to NULL, is initialized to the default
2122 * structure exynos_gpio_cfg in the init function below.
2123 *
2124 * The 'base' member is also initialized in the init function below.
2125 * Note: The initialization of 'base' member of samsung_gpio_chip structure
2126 * uses the above macro and depends on the banks being listed in order here.
2127 */
2128
2129 #ifdef CONFIG_ARCH_EXYNOS4
2130 static struct samsung_gpio_chip exynos4_gpios_1[] = {
2131 {
2132 .chip = {
2133 .base = EXYNOS4_GPA0(0),
2134 .ngpio = EXYNOS4_GPIO_A0_NR,
2135 .label = "GPA0",
2136 },
2137 }, {
2138 .chip = {
2139 .base = EXYNOS4_GPA1(0),
2140 .ngpio = EXYNOS4_GPIO_A1_NR,
2141 .label = "GPA1",
2142 },
2143 }, {
2144 .chip = {
2145 .base = EXYNOS4_GPB(0),
2146 .ngpio = EXYNOS4_GPIO_B_NR,
2147 .label = "GPB",
2148 },
2149 }, {
2150 .chip = {
2151 .base = EXYNOS4_GPC0(0),
2152 .ngpio = EXYNOS4_GPIO_C0_NR,
2153 .label = "GPC0",
2154 },
2155 }, {
2156 .chip = {
2157 .base = EXYNOS4_GPC1(0),
2158 .ngpio = EXYNOS4_GPIO_C1_NR,
2159 .label = "GPC1",
2160 },
2161 }, {
2162 .chip = {
2163 .base = EXYNOS4_GPD0(0),
2164 .ngpio = EXYNOS4_GPIO_D0_NR,
2165 .label = "GPD0",
2166 },
2167 }, {
2168 .chip = {
2169 .base = EXYNOS4_GPD1(0),
2170 .ngpio = EXYNOS4_GPIO_D1_NR,
2171 .label = "GPD1",
2172 },
2173 }, {
2174 .chip = {
2175 .base = EXYNOS4_GPE0(0),
2176 .ngpio = EXYNOS4_GPIO_E0_NR,
2177 .label = "GPE0",
2178 },
2179 }, {
2180 .chip = {
2181 .base = EXYNOS4_GPE1(0),
2182 .ngpio = EXYNOS4_GPIO_E1_NR,
2183 .label = "GPE1",
2184 },
2185 }, {
2186 .chip = {
2187 .base = EXYNOS4_GPE2(0),
2188 .ngpio = EXYNOS4_GPIO_E2_NR,
2189 .label = "GPE2",
2190 },
2191 }, {
2192 .chip = {
2193 .base = EXYNOS4_GPE3(0),
2194 .ngpio = EXYNOS4_GPIO_E3_NR,
2195 .label = "GPE3",
2196 },
2197 }, {
2198 .chip = {
2199 .base = EXYNOS4_GPE4(0),
2200 .ngpio = EXYNOS4_GPIO_E4_NR,
2201 .label = "GPE4",
2202 },
2203 }, {
2204 .chip = {
2205 .base = EXYNOS4_GPF0(0),
2206 .ngpio = EXYNOS4_GPIO_F0_NR,
2207 .label = "GPF0",
2208 },
2209 }, {
2210 .chip = {
2211 .base = EXYNOS4_GPF1(0),
2212 .ngpio = EXYNOS4_GPIO_F1_NR,
2213 .label = "GPF1",
2214 },
2215 }, {
2216 .chip = {
2217 .base = EXYNOS4_GPF2(0),
2218 .ngpio = EXYNOS4_GPIO_F2_NR,
2219 .label = "GPF2",
2220 },
2221 }, {
2222 .chip = {
2223 .base = EXYNOS4_GPF3(0),
2224 .ngpio = EXYNOS4_GPIO_F3_NR,
2225 .label = "GPF3",
2226 },
2227 },
2228 };
2229 #endif
2230
2231 #ifdef CONFIG_ARCH_EXYNOS4
2232 static struct samsung_gpio_chip exynos4_gpios_2[] = {
2233 {
2234 .chip = {
2235 .base = EXYNOS4_GPJ0(0),
2236 .ngpio = EXYNOS4_GPIO_J0_NR,
2237 .label = "GPJ0",
2238 },
2239 }, {
2240 .chip = {
2241 .base = EXYNOS4_GPJ1(0),
2242 .ngpio = EXYNOS4_GPIO_J1_NR,
2243 .label = "GPJ1",
2244 },
2245 }, {
2246 .chip = {
2247 .base = EXYNOS4_GPK0(0),
2248 .ngpio = EXYNOS4_GPIO_K0_NR,
2249 .label = "GPK0",
2250 },
2251 }, {
2252 .chip = {
2253 .base = EXYNOS4_GPK1(0),
2254 .ngpio = EXYNOS4_GPIO_K1_NR,
2255 .label = "GPK1",
2256 },
2257 }, {
2258 .chip = {
2259 .base = EXYNOS4_GPK2(0),
2260 .ngpio = EXYNOS4_GPIO_K2_NR,
2261 .label = "GPK2",
2262 },
2263 }, {
2264 .chip = {
2265 .base = EXYNOS4_GPK3(0),
2266 .ngpio = EXYNOS4_GPIO_K3_NR,
2267 .label = "GPK3",
2268 },
2269 }, {
2270 .chip = {
2271 .base = EXYNOS4_GPL0(0),
2272 .ngpio = EXYNOS4_GPIO_L0_NR,
2273 .label = "GPL0",
2274 },
2275 }, {
2276 .chip = {
2277 .base = EXYNOS4_GPL1(0),
2278 .ngpio = EXYNOS4_GPIO_L1_NR,
2279 .label = "GPL1",
2280 },
2281 }, {
2282 .chip = {
2283 .base = EXYNOS4_GPL2(0),
2284 .ngpio = EXYNOS4_GPIO_L2_NR,
2285 .label = "GPL2",
2286 },
2287 }, {
2288 .config = &samsung_gpio_cfgs[8],
2289 .chip = {
2290 .base = EXYNOS4_GPY0(0),
2291 .ngpio = EXYNOS4_GPIO_Y0_NR,
2292 .label = "GPY0",
2293 },
2294 }, {
2295 .config = &samsung_gpio_cfgs[8],
2296 .chip = {
2297 .base = EXYNOS4_GPY1(0),
2298 .ngpio = EXYNOS4_GPIO_Y1_NR,
2299 .label = "GPY1",
2300 },
2301 }, {
2302 .config = &samsung_gpio_cfgs[8],
2303 .chip = {
2304 .base = EXYNOS4_GPY2(0),
2305 .ngpio = EXYNOS4_GPIO_Y2_NR,
2306 .label = "GPY2",
2307 },
2308 }, {
2309 .config = &samsung_gpio_cfgs[8],
2310 .chip = {
2311 .base = EXYNOS4_GPY3(0),
2312 .ngpio = EXYNOS4_GPIO_Y3_NR,
2313 .label = "GPY3",
2314 },
2315 }, {
2316 .config = &samsung_gpio_cfgs[8],
2317 .chip = {
2318 .base = EXYNOS4_GPY4(0),
2319 .ngpio = EXYNOS4_GPIO_Y4_NR,
2320 .label = "GPY4",
2321 },
2322 }, {
2323 .config = &samsung_gpio_cfgs[8],
2324 .chip = {
2325 .base = EXYNOS4_GPY5(0),
2326 .ngpio = EXYNOS4_GPIO_Y5_NR,
2327 .label = "GPY5",
2328 },
2329 }, {
2330 .config = &samsung_gpio_cfgs[8],
2331 .chip = {
2332 .base = EXYNOS4_GPY6(0),
2333 .ngpio = EXYNOS4_GPIO_Y6_NR,
2334 .label = "GPY6",
2335 },
2336 }, {
2337 .config = &samsung_gpio_cfgs[9],
2338 .irq_base = IRQ_EINT(0),
2339 .chip = {
2340 .base = EXYNOS4_GPX0(0),
2341 .ngpio = EXYNOS4_GPIO_X0_NR,
2342 .label = "GPX0",
2343 .to_irq = samsung_gpiolib_to_irq,
2344 },
2345 }, {
2346 .config = &samsung_gpio_cfgs[9],
2347 .irq_base = IRQ_EINT(8),
2348 .chip = {
2349 .base = EXYNOS4_GPX1(0),
2350 .ngpio = EXYNOS4_GPIO_X1_NR,
2351 .label = "GPX1",
2352 .to_irq = samsung_gpiolib_to_irq,
2353 },
2354 }, {
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 .config = &samsung_gpio_cfgs[9],
2365 .irq_base = IRQ_EINT(24),
2366 .chip = {
2367 .base = EXYNOS4_GPX3(0),
2368 .ngpio = EXYNOS4_GPIO_X3_NR,
2369 .label = "GPX3",
2370 .to_irq = samsung_gpiolib_to_irq,
2371 },
2372 },
2373 };
2374 #endif
2375
2376 #ifdef CONFIG_ARCH_EXYNOS4
2377 static struct samsung_gpio_chip exynos4_gpios_3[] = {
2378 {
2379 .chip = {
2380 .base = EXYNOS4_GPZ(0),
2381 .ngpio = EXYNOS4_GPIO_Z_NR,
2382 .label = "GPZ",
2383 },
2384 },
2385 };
2386 #endif
2387
2388 #ifdef CONFIG_SOC_EXYNOS5250
2389 static struct samsung_gpio_chip exynos5_gpios_1[] = {
2390 {
2391 .chip = {
2392 .base = EXYNOS5_GPA0(0),
2393 .ngpio = EXYNOS5_GPIO_A0_NR,
2394 .label = "GPA0",
2395 },
2396 }, {
2397 .chip = {
2398 .base = EXYNOS5_GPA1(0),
2399 .ngpio = EXYNOS5_GPIO_A1_NR,
2400 .label = "GPA1",
2401 },
2402 }, {
2403 .chip = {
2404 .base = EXYNOS5_GPA2(0),
2405 .ngpio = EXYNOS5_GPIO_A2_NR,
2406 .label = "GPA2",
2407 },
2408 }, {
2409 .chip = {
2410 .base = EXYNOS5_GPB0(0),
2411 .ngpio = EXYNOS5_GPIO_B0_NR,
2412 .label = "GPB0",
2413 },
2414 }, {
2415 .chip = {
2416 .base = EXYNOS5_GPB1(0),
2417 .ngpio = EXYNOS5_GPIO_B1_NR,
2418 .label = "GPB1",
2419 },
2420 }, {
2421 .chip = {
2422 .base = EXYNOS5_GPB2(0),
2423 .ngpio = EXYNOS5_GPIO_B2_NR,
2424 .label = "GPB2",
2425 },
2426 }, {
2427 .chip = {
2428 .base = EXYNOS5_GPB3(0),
2429 .ngpio = EXYNOS5_GPIO_B3_NR,
2430 .label = "GPB3",
2431 },
2432 }, {
2433 .chip = {
2434 .base = EXYNOS5_GPC0(0),
2435 .ngpio = EXYNOS5_GPIO_C0_NR,
2436 .label = "GPC0",
2437 },
2438 }, {
2439 .chip = {
2440 .base = EXYNOS5_GPC1(0),
2441 .ngpio = EXYNOS5_GPIO_C1_NR,
2442 .label = "GPC1",
2443 },
2444 }, {
2445 .chip = {
2446 .base = EXYNOS5_GPC2(0),
2447 .ngpio = EXYNOS5_GPIO_C2_NR,
2448 .label = "GPC2",
2449 },
2450 }, {
2451 .chip = {
2452 .base = EXYNOS5_GPC3(0),
2453 .ngpio = EXYNOS5_GPIO_C3_NR,
2454 .label = "GPC3",
2455 },
2456 }, {
2457 .chip = {
2458 .base = EXYNOS5_GPD0(0),
2459 .ngpio = EXYNOS5_GPIO_D0_NR,
2460 .label = "GPD0",
2461 },
2462 }, {
2463 .chip = {
2464 .base = EXYNOS5_GPD1(0),
2465 .ngpio = EXYNOS5_GPIO_D1_NR,
2466 .label = "GPD1",
2467 },
2468 }, {
2469 .chip = {
2470 .base = EXYNOS5_GPY0(0),
2471 .ngpio = EXYNOS5_GPIO_Y0_NR,
2472 .label = "GPY0",
2473 },
2474 }, {
2475 .chip = {
2476 .base = EXYNOS5_GPY1(0),
2477 .ngpio = EXYNOS5_GPIO_Y1_NR,
2478 .label = "GPY1",
2479 },
2480 }, {
2481 .chip = {
2482 .base = EXYNOS5_GPY2(0),
2483 .ngpio = EXYNOS5_GPIO_Y2_NR,
2484 .label = "GPY2",
2485 },
2486 }, {
2487 .chip = {
2488 .base = EXYNOS5_GPY3(0),
2489 .ngpio = EXYNOS5_GPIO_Y3_NR,
2490 .label = "GPY3",
2491 },
2492 }, {
2493 .chip = {
2494 .base = EXYNOS5_GPY4(0),
2495 .ngpio = EXYNOS5_GPIO_Y4_NR,
2496 .label = "GPY4",
2497 },
2498 }, {
2499 .chip = {
2500 .base = EXYNOS5_GPY5(0),
2501 .ngpio = EXYNOS5_GPIO_Y5_NR,
2502 .label = "GPY5",
2503 },
2504 }, {
2505 .chip = {
2506 .base = EXYNOS5_GPY6(0),
2507 .ngpio = EXYNOS5_GPIO_Y6_NR,
2508 .label = "GPY6",
2509 },
2510 }, {
2511 .chip = {
2512 .base = EXYNOS5_GPC4(0),
2513 .ngpio = EXYNOS5_GPIO_C4_NR,
2514 .label = "GPC4",
2515 },
2516 }, {
2517 .config = &samsung_gpio_cfgs[9],
2518 .irq_base = IRQ_EINT(0),
2519 .chip = {
2520 .base = EXYNOS5_GPX0(0),
2521 .ngpio = EXYNOS5_GPIO_X0_NR,
2522 .label = "GPX0",
2523 .to_irq = samsung_gpiolib_to_irq,
2524 },
2525 }, {
2526 .config = &samsung_gpio_cfgs[9],
2527 .irq_base = IRQ_EINT(8),
2528 .chip = {
2529 .base = EXYNOS5_GPX1(0),
2530 .ngpio = EXYNOS5_GPIO_X1_NR,
2531 .label = "GPX1",
2532 .to_irq = samsung_gpiolib_to_irq,
2533 },
2534 }, {
2535 .config = &samsung_gpio_cfgs[9],
2536 .irq_base = IRQ_EINT(16),
2537 .chip = {
2538 .base = EXYNOS5_GPX2(0),
2539 .ngpio = EXYNOS5_GPIO_X2_NR,
2540 .label = "GPX2",
2541 .to_irq = samsung_gpiolib_to_irq,
2542 },
2543 }, {
2544 .config = &samsung_gpio_cfgs[9],
2545 .irq_base = IRQ_EINT(24),
2546 .chip = {
2547 .base = EXYNOS5_GPX3(0),
2548 .ngpio = EXYNOS5_GPIO_X3_NR,
2549 .label = "GPX3",
2550 .to_irq = samsung_gpiolib_to_irq,
2551 },
2552 },
2553 };
2554 #endif
2555
2556 #ifdef CONFIG_SOC_EXYNOS5250
2557 static struct samsung_gpio_chip exynos5_gpios_2[] = {
2558 {
2559 .chip = {
2560 .base = EXYNOS5_GPE0(0),
2561 .ngpio = EXYNOS5_GPIO_E0_NR,
2562 .label = "GPE0",
2563 },
2564 }, {
2565 .chip = {
2566 .base = EXYNOS5_GPE1(0),
2567 .ngpio = EXYNOS5_GPIO_E1_NR,
2568 .label = "GPE1",
2569 },
2570 }, {
2571 .chip = {
2572 .base = EXYNOS5_GPF0(0),
2573 .ngpio = EXYNOS5_GPIO_F0_NR,
2574 .label = "GPF0",
2575 },
2576 }, {
2577 .chip = {
2578 .base = EXYNOS5_GPF1(0),
2579 .ngpio = EXYNOS5_GPIO_F1_NR,
2580 .label = "GPF1",
2581 },
2582 }, {
2583 .chip = {
2584 .base = EXYNOS5_GPG0(0),
2585 .ngpio = EXYNOS5_GPIO_G0_NR,
2586 .label = "GPG0",
2587 },
2588 }, {
2589 .chip = {
2590 .base = EXYNOS5_GPG1(0),
2591 .ngpio = EXYNOS5_GPIO_G1_NR,
2592 .label = "GPG1",
2593 },
2594 }, {
2595 .chip = {
2596 .base = EXYNOS5_GPG2(0),
2597 .ngpio = EXYNOS5_GPIO_G2_NR,
2598 .label = "GPG2",
2599 },
2600 }, {
2601 .chip = {
2602 .base = EXYNOS5_GPH0(0),
2603 .ngpio = EXYNOS5_GPIO_H0_NR,
2604 .label = "GPH0",
2605 },
2606 }, {
2607 .chip = {
2608 .base = EXYNOS5_GPH1(0),
2609 .ngpio = EXYNOS5_GPIO_H1_NR,
2610 .label = "GPH1",
2611
2612 },
2613 },
2614 };
2615 #endif
2616
2617 #ifdef CONFIG_SOC_EXYNOS5250
2618 static struct samsung_gpio_chip exynos5_gpios_3[] = {
2619 {
2620 .chip = {
2621 .base = EXYNOS5_GPV0(0),
2622 .ngpio = EXYNOS5_GPIO_V0_NR,
2623 .label = "GPV0",
2624 },
2625 }, {
2626 .chip = {
2627 .base = EXYNOS5_GPV1(0),
2628 .ngpio = EXYNOS5_GPIO_V1_NR,
2629 .label = "GPV1",
2630 },
2631 }, {
2632 .chip = {
2633 .base = EXYNOS5_GPV2(0),
2634 .ngpio = EXYNOS5_GPIO_V2_NR,
2635 .label = "GPV2",
2636 },
2637 }, {
2638 .chip = {
2639 .base = EXYNOS5_GPV3(0),
2640 .ngpio = EXYNOS5_GPIO_V3_NR,
2641 .label = "GPV3",
2642 },
2643 }, {
2644 .chip = {
2645 .base = EXYNOS5_GPV4(0),
2646 .ngpio = EXYNOS5_GPIO_V4_NR,
2647 .label = "GPV4",
2648 },
2649 },
2650 };
2651 #endif
2652
2653 #ifdef CONFIG_SOC_EXYNOS5250
2654 static struct samsung_gpio_chip exynos5_gpios_4[] = {
2655 {
2656 .chip = {
2657 .base = EXYNOS5_GPZ(0),
2658 .ngpio = EXYNOS5_GPIO_Z_NR,
2659 .label = "GPZ",
2660 },
2661 },
2662 };
2663 #endif
2664
2665
2666 #if defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF)
2667 static int exynos_gpio_xlate(struct gpio_chip *gc,
2668 const struct of_phandle_args *gpiospec, u32 *flags)
2669 {
2670 unsigned int pin;
2671
2672 if (WARN_ON(gc->of_gpio_n_cells < 4))
2673 return -EINVAL;
2674
2675 if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
2676 return -EINVAL;
2677
2678 if (gpiospec->args[0] > gc->ngpio)
2679 return -EINVAL;
2680
2681 pin = gc->base + gpiospec->args[0];
2682
2683 if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
2684 pr_warn("gpio_xlate: failed to set pin function\n");
2685 if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
2686 pr_warn("gpio_xlate: failed to set pin pull up/down\n");
2687 if (s5p_gpio_set_drvstr(pin, gpiospec->args[3]))
2688 pr_warn("gpio_xlate: failed to set pin drive strength\n");
2689
2690 if (flags)
2691 *flags = gpiospec->args[2] >> 16;
2692
2693 return gpiospec->args[0];
2694 }
2695
2696 static const struct of_device_id exynos_gpio_dt_match[] __initdata = {
2697 { .compatible = "samsung,exynos4-gpio", },
2698 {}
2699 };
2700
2701 static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
2702 u64 base, u64 offset)
2703 {
2704 struct gpio_chip *gc = &chip->chip;
2705 u64 address;
2706
2707 if (!of_have_populated_dt())
2708 return;
2709
2710 address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
2711 gc->of_node = of_find_matching_node_by_address(NULL,
2712 exynos_gpio_dt_match, address);
2713 if (!gc->of_node) {
2714 pr_info("gpio: device tree node not found for gpio controller"
2715 " with base address %08llx\n", address);
2716 return;
2717 }
2718 gc->of_gpio_n_cells = 4;
2719 gc->of_xlate = exynos_gpio_xlate;
2720 }
2721 #elif defined(CONFIG_ARCH_EXYNOS)
2722 static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
2723 u64 base, u64 offset)
2724 {
2725 return;
2726 }
2727 #endif /* defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF) */
2728
2729 static __init void exynos4_gpiolib_init(void)
2730 {
2731 #ifdef CONFIG_CPU_EXYNOS4210
2732 struct samsung_gpio_chip *chip;
2733 int i, nr_chips;
2734 void __iomem *gpio_base1, *gpio_base2, *gpio_base3;
2735 int group = 0;
2736 void __iomem *gpx_base;
2737
2738 /* gpio part1 */
2739 gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K);
2740 if (gpio_base1 == NULL) {
2741 pr_err("unable to ioremap for gpio_base1\n");
2742 goto err_ioremap1;
2743 }
2744
2745 chip = exynos4_gpios_1;
2746 nr_chips = ARRAY_SIZE(exynos4_gpios_1);
2747
2748 for (i = 0; i < nr_chips; i++, chip++) {
2749 if (!chip->config) {
2750 chip->config = &exynos_gpio_cfg;
2751 chip->group = group++;
2752 }
2753 exynos_gpiolib_attach_ofnode(chip,
2754 EXYNOS4_PA_GPIO1, i * 0x20);
2755 }
2756 samsung_gpiolib_add_4bit_chips(exynos4_gpios_1,
2757 nr_chips, gpio_base1);
2758
2759 /* gpio part2 */
2760 gpio_base2 = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
2761 if (gpio_base2 == NULL) {
2762 pr_err("unable to ioremap for gpio_base2\n");
2763 goto err_ioremap2;
2764 }
2765
2766 /* need to set base address for gpx */
2767 chip = &exynos4_gpios_2[16];
2768 gpx_base = gpio_base2 + 0xC00;
2769 for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
2770 chip->base = gpx_base;
2771
2772 chip = exynos4_gpios_2;
2773 nr_chips = ARRAY_SIZE(exynos4_gpios_2);
2774
2775 for (i = 0; i < nr_chips; i++, chip++) {
2776 if (!chip->config) {
2777 chip->config = &exynos_gpio_cfg;
2778 chip->group = group++;
2779 }
2780 exynos_gpiolib_attach_ofnode(chip,
2781 EXYNOS4_PA_GPIO2, i * 0x20);
2782 }
2783 samsung_gpiolib_add_4bit_chips(exynos4_gpios_2,
2784 nr_chips, gpio_base2);
2785
2786 /* gpio part3 */
2787 gpio_base3 = ioremap(EXYNOS4_PA_GPIO3, SZ_256);
2788 if (gpio_base3 == NULL) {
2789 pr_err("unable to ioremap for gpio_base3\n");
2790 goto err_ioremap3;
2791 }
2792
2793 chip = exynos4_gpios_3;
2794 nr_chips = ARRAY_SIZE(exynos4_gpios_3);
2795
2796 for (i = 0; i < nr_chips; i++, chip++) {
2797 if (!chip->config) {
2798 chip->config = &exynos_gpio_cfg;
2799 chip->group = group++;
2800 }
2801 exynos_gpiolib_attach_ofnode(chip,
2802 EXYNOS4_PA_GPIO3, i * 0x20);
2803 }
2804 samsung_gpiolib_add_4bit_chips(exynos4_gpios_3,
2805 nr_chips, gpio_base3);
2806
2807 #if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
2808 s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
2809 s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
2810 #endif
2811
2812 return;
2813
2814 err_ioremap3:
2815 iounmap(gpio_base2);
2816 err_ioremap2:
2817 iounmap(gpio_base1);
2818 err_ioremap1:
2819 return;
2820 #endif /* CONFIG_CPU_EXYNOS4210 */
2821 }
2822
2823 static __init void exynos5_gpiolib_init(void)
2824 {
2825 #ifdef CONFIG_SOC_EXYNOS5250
2826 struct samsung_gpio_chip *chip;
2827 int i, nr_chips;
2828 void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4;
2829 int group = 0;
2830 void __iomem *gpx_base;
2831
2832 /* gpio part1 */
2833 gpio_base1 = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
2834 if (gpio_base1 == NULL) {
2835 pr_err("unable to ioremap for gpio_base1\n");
2836 goto err_ioremap1;
2837 }
2838
2839 /* need to set base address for gpc4 */
2840 exynos5_gpios_1[20].base = gpio_base1 + 0x2E0;
2841
2842 /* need to set base address for gpx */
2843 chip = &exynos5_gpios_1[21];
2844 gpx_base = gpio_base1 + 0xC00;
2845 for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
2846 chip->base = gpx_base;
2847
2848 chip = exynos5_gpios_1;
2849 nr_chips = ARRAY_SIZE(exynos5_gpios_1);
2850
2851 for (i = 0; i < nr_chips; i++, chip++) {
2852 if (!chip->config) {
2853 chip->config = &exynos_gpio_cfg;
2854 chip->group = group++;
2855 }
2856 exynos_gpiolib_attach_ofnode(chip,
2857 EXYNOS5_PA_GPIO1, i * 0x20);
2858 }
2859 samsung_gpiolib_add_4bit_chips(exynos5_gpios_1,
2860 nr_chips, gpio_base1);
2861
2862 /* gpio part2 */
2863 gpio_base2 = ioremap(EXYNOS5_PA_GPIO2, SZ_4K);
2864 if (gpio_base2 == NULL) {
2865 pr_err("unable to ioremap for gpio_base2\n");
2866 goto err_ioremap2;
2867 }
2868
2869 chip = exynos5_gpios_2;
2870 nr_chips = ARRAY_SIZE(exynos5_gpios_2);
2871
2872 for (i = 0; i < nr_chips; i++, chip++) {
2873 if (!chip->config) {
2874 chip->config = &exynos_gpio_cfg;
2875 chip->group = group++;
2876 }
2877 exynos_gpiolib_attach_ofnode(chip,
2878 EXYNOS5_PA_GPIO2, i * 0x20);
2879 }
2880 samsung_gpiolib_add_4bit_chips(exynos5_gpios_2,
2881 nr_chips, gpio_base2);
2882
2883 /* gpio part3 */
2884 gpio_base3 = ioremap(EXYNOS5_PA_GPIO3, SZ_4K);
2885 if (gpio_base3 == NULL) {
2886 pr_err("unable to ioremap for gpio_base3\n");
2887 goto err_ioremap3;
2888 }
2889
2890 /* need to set base address for gpv */
2891 exynos5_gpios_3[0].base = gpio_base3;
2892 exynos5_gpios_3[1].base = gpio_base3 + 0x20;
2893 exynos5_gpios_3[2].base = gpio_base3 + 0x60;
2894 exynos5_gpios_3[3].base = gpio_base3 + 0x80;
2895 exynos5_gpios_3[4].base = gpio_base3 + 0xC0;
2896
2897 chip = exynos5_gpios_3;
2898 nr_chips = ARRAY_SIZE(exynos5_gpios_3);
2899
2900 for (i = 0; i < nr_chips; i++, chip++) {
2901 if (!chip->config) {
2902 chip->config = &exynos_gpio_cfg;
2903 chip->group = group++;
2904 }
2905 exynos_gpiolib_attach_ofnode(chip,
2906 EXYNOS5_PA_GPIO3, i * 0x20);
2907 }
2908 samsung_gpiolib_add_4bit_chips(exynos5_gpios_3,
2909 nr_chips, gpio_base3);
2910
2911 /* gpio part4 */
2912 gpio_base4 = ioremap(EXYNOS5_PA_GPIO4, SZ_4K);
2913 if (gpio_base4 == NULL) {
2914 pr_err("unable to ioremap for gpio_base4\n");
2915 goto err_ioremap4;
2916 }
2917
2918 chip = exynos5_gpios_4;
2919 nr_chips = ARRAY_SIZE(exynos5_gpios_4);
2920
2921 for (i = 0; i < nr_chips; i++, chip++) {
2922 if (!chip->config) {
2923 chip->config = &exynos_gpio_cfg;
2924 chip->group = group++;
2925 }
2926 exynos_gpiolib_attach_ofnode(chip,
2927 EXYNOS5_PA_GPIO4, i * 0x20);
2928 }
2929 samsung_gpiolib_add_4bit_chips(exynos5_gpios_4,
2930 nr_chips, gpio_base4);
2931 return;
2932
2933 err_ioremap4:
2934 iounmap(gpio_base3);
2935 err_ioremap3:
2936 iounmap(gpio_base2);
2937 err_ioremap2:
2938 iounmap(gpio_base1);
2939 err_ioremap1:
2940 return;
2941
2942 #endif /* CONFIG_SOC_EXYNOS5250 */
2943 }
2944
2945 /* TODO: cleanup soc_is_* */
2946 static __init int samsung_gpiolib_init(void)
2947 {
2948 struct samsung_gpio_chip *chip;
2949 int i, nr_chips;
2950 int group = 0;
2951
2952 #if defined(CONFIG_PINCTRL_EXYNOS) || defined(CONFIG_PINCTRL_EXYNOS5440)
2953 /*
2954 * This gpio driver includes support for device tree support and there
2955 * are platforms using it. In order to maintain compatibility with those
2956 * platforms, and to allow non-dt Exynos4210 platforms to use this
2957 * gpiolib support, a check is added to find out if there is a active
2958 * pin-controller driver support available. If it is available, this
2959 * gpiolib support is ignored and the gpiolib support available in
2960 * pin-controller driver is used. This is a temporary check and will go
2961 * away when all of the Exynos4210 platforms have switched to using
2962 * device tree and the pin-ctrl driver.
2963 */
2964 struct device_node *pctrl_np;
2965 static const struct of_device_id exynos_pinctrl_ids[] = {
2966 { .compatible = "samsung,s3c2412-pinctrl", },
2967 { .compatible = "samsung,s3c2416-pinctrl", },
2968 { .compatible = "samsung,s3c2440-pinctrl", },
2969 { .compatible = "samsung,s3c2450-pinctrl", },
2970 { .compatible = "samsung,exynos4210-pinctrl", },
2971 { .compatible = "samsung,exynos4x12-pinctrl", },
2972 { .compatible = "samsung,exynos5250-pinctrl", },
2973 { .compatible = "samsung,exynos5440-pinctrl", },
2974 { }
2975 };
2976 for_each_matching_node(pctrl_np, exynos_pinctrl_ids)
2977 if (pctrl_np && of_device_is_available(pctrl_np))
2978 return -ENODEV;
2979 #endif
2980
2981 samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs));
2982
2983 if (soc_is_s3c24xx()) {
2984 s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
2985 ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
2986 } else if (soc_is_s3c64xx()) {
2987 samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
2988 ARRAY_SIZE(s3c64xx_gpios_2bit),
2989 S3C64XX_VA_GPIO + 0xE0, 0x20);
2990 samsung_gpiolib_add_4bit_chips(s3c64xx_gpios_4bit,
2991 ARRAY_SIZE(s3c64xx_gpios_4bit),
2992 S3C64XX_VA_GPIO);
2993 samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2,
2994 ARRAY_SIZE(s3c64xx_gpios_4bit2));
2995 } else if (soc_is_s5p6440()) {
2996 samsung_gpiolib_add_2bit_chips(s5p6440_gpios_2bit,
2997 ARRAY_SIZE(s5p6440_gpios_2bit), NULL, 0x0);
2998 samsung_gpiolib_add_4bit_chips(s5p6440_gpios_4bit,
2999 ARRAY_SIZE(s5p6440_gpios_4bit), S5P_VA_GPIO);
3000 samsung_gpiolib_add_4bit2_chips(s5p6440_gpios_4bit2,
3001 ARRAY_SIZE(s5p6440_gpios_4bit2));
3002 s5p64x0_gpiolib_add_rbank(s5p6440_gpios_rbank,
3003 ARRAY_SIZE(s5p6440_gpios_rbank));
3004 } else if (soc_is_s5p6450()) {
3005 samsung_gpiolib_add_2bit_chips(s5p6450_gpios_2bit,
3006 ARRAY_SIZE(s5p6450_gpios_2bit), NULL, 0x0);
3007 samsung_gpiolib_add_4bit_chips(s5p6450_gpios_4bit,
3008 ARRAY_SIZE(s5p6450_gpios_4bit), S5P_VA_GPIO);
3009 samsung_gpiolib_add_4bit2_chips(s5p6450_gpios_4bit2,
3010 ARRAY_SIZE(s5p6450_gpios_4bit2));
3011 s5p64x0_gpiolib_add_rbank(s5p6450_gpios_rbank,
3012 ARRAY_SIZE(s5p6450_gpios_rbank));
3013 } else if (soc_is_s5pc100()) {
3014 group = 0;
3015 chip = s5pc100_gpios_4bit;
3016 nr_chips = ARRAY_SIZE(s5pc100_gpios_4bit);
3017
3018 for (i = 0; i < nr_chips; i++, chip++) {
3019 if (!chip->config) {
3020 chip->config = &samsung_gpio_cfgs[3];
3021 chip->group = group++;
3022 }
3023 }
3024 samsung_gpiolib_add_4bit_chips(s5pc100_gpios_4bit, nr_chips, S5P_VA_GPIO);
3025 #if defined(CONFIG_CPU_S5PC100) && defined(CONFIG_S5P_GPIO_INT)
3026 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
3027 #endif
3028 } else if (soc_is_s5pv210()) {
3029 group = 0;
3030 chip = s5pv210_gpios_4bit;
3031 nr_chips = ARRAY_SIZE(s5pv210_gpios_4bit);
3032
3033 for (i = 0; i < nr_chips; i++, chip++) {
3034 if (!chip->config) {
3035 chip->config = &samsung_gpio_cfgs[3];
3036 chip->group = group++;
3037 }
3038 }
3039 samsung_gpiolib_add_4bit_chips(s5pv210_gpios_4bit, nr_chips, S5P_VA_GPIO);
3040 #if defined(CONFIG_CPU_S5PV210) && defined(CONFIG_S5P_GPIO_INT)
3041 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
3042 #endif
3043 } else if (soc_is_exynos4210()) {
3044 exynos4_gpiolib_init();
3045 } else if (soc_is_exynos5250()) {
3046 exynos5_gpiolib_init();
3047 } else {
3048 WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
3049 return -ENODEV;
3050 }
3051
3052 return 0;
3053 }
3054 core_initcall(samsung_gpiolib_init);
3055
3056 int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
3057 {
3058 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3059 unsigned long flags;
3060 int offset;
3061 int ret;
3062
3063 if (!chip)
3064 return -EINVAL;
3065
3066 offset = pin - chip->chip.base;
3067
3068 samsung_gpio_lock(chip, flags);
3069 ret = samsung_gpio_do_setcfg(chip, offset, config);
3070 samsung_gpio_unlock(chip, flags);
3071
3072 return ret;
3073 }
3074 EXPORT_SYMBOL(s3c_gpio_cfgpin);
3075
3076 int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
3077 unsigned int cfg)
3078 {
3079 int ret;
3080
3081 for (; nr > 0; nr--, start++) {
3082 ret = s3c_gpio_cfgpin(start, cfg);
3083 if (ret != 0)
3084 return ret;
3085 }
3086
3087 return 0;
3088 }
3089 EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
3090
3091 int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
3092 unsigned int cfg, samsung_gpio_pull_t pull)
3093 {
3094 int ret;
3095
3096 for (; nr > 0; nr--, start++) {
3097 s3c_gpio_setpull(start, pull);
3098 ret = s3c_gpio_cfgpin(start, cfg);
3099 if (ret != 0)
3100 return ret;
3101 }
3102
3103 return 0;
3104 }
3105 EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_range);
3106
3107 unsigned s3c_gpio_getcfg(unsigned int pin)
3108 {
3109 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3110 unsigned long flags;
3111 unsigned ret = 0;
3112 int offset;
3113
3114 if (chip) {
3115 offset = pin - chip->chip.base;
3116
3117 samsung_gpio_lock(chip, flags);
3118 ret = samsung_gpio_do_getcfg(chip, offset);
3119 samsung_gpio_unlock(chip, flags);
3120 }
3121
3122 return ret;
3123 }
3124 EXPORT_SYMBOL(s3c_gpio_getcfg);
3125
3126 int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull)
3127 {
3128 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3129 unsigned long flags;
3130 int offset, ret;
3131
3132 if (!chip)
3133 return -EINVAL;
3134
3135 offset = pin - chip->chip.base;
3136
3137 samsung_gpio_lock(chip, flags);
3138 ret = samsung_gpio_do_setpull(chip, offset, pull);
3139 samsung_gpio_unlock(chip, flags);
3140
3141 return ret;
3142 }
3143 EXPORT_SYMBOL(s3c_gpio_setpull);
3144
3145 samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
3146 {
3147 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3148 unsigned long flags;
3149 int offset;
3150 u32 pup = 0;
3151
3152 if (chip) {
3153 offset = pin - chip->chip.base;
3154
3155 samsung_gpio_lock(chip, flags);
3156 pup = samsung_gpio_do_getpull(chip, offset);
3157 samsung_gpio_unlock(chip, flags);
3158 }
3159
3160 return (__force samsung_gpio_pull_t)pup;
3161 }
3162 EXPORT_SYMBOL(s3c_gpio_getpull);
3163
3164 #ifdef CONFIG_S5P_GPIO_DRVSTR
3165 s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin)
3166 {
3167 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3168 unsigned int off;
3169 void __iomem *reg;
3170 int shift;
3171 u32 drvstr;
3172
3173 if (!chip)
3174 return -EINVAL;
3175
3176 off = pin - chip->chip.base;
3177 shift = off * 2;
3178 reg = chip->base + 0x0C;
3179
3180 drvstr = __raw_readl(reg);
3181 drvstr = drvstr >> shift;
3182 drvstr &= 0x3;
3183
3184 return (__force s5p_gpio_drvstr_t)drvstr;
3185 }
3186 EXPORT_SYMBOL(s5p_gpio_get_drvstr);
3187
3188 int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr)
3189 {
3190 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3191 unsigned int off;
3192 void __iomem *reg;
3193 int shift;
3194 u32 tmp;
3195
3196 if (!chip)
3197 return -EINVAL;
3198
3199 off = pin - chip->chip.base;
3200 shift = off * 2;
3201 reg = chip->base + 0x0C;
3202
3203 tmp = __raw_readl(reg);
3204 tmp &= ~(0x3 << shift);
3205 tmp |= drvstr << shift;
3206
3207 __raw_writel(tmp, reg);
3208
3209 return 0;
3210 }
3211 EXPORT_SYMBOL(s5p_gpio_set_drvstr);
3212 #endif /* CONFIG_S5P_GPIO_DRVSTR */
3213
3214 #ifdef CONFIG_PLAT_S3C24XX
3215 unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
3216 {
3217 unsigned long flags;
3218 unsigned long misccr;
3219
3220 local_irq_save(flags);
3221 misccr = __raw_readl(S3C24XX_MISCCR);
3222 misccr &= ~clear;
3223 misccr ^= change;
3224 __raw_writel(misccr, S3C24XX_MISCCR);
3225 local_irq_restore(flags);
3226
3227 return misccr;
3228 }
3229 EXPORT_SYMBOL(s3c2410_modify_misccr);
3230 #endif
Linux kernel - Deliverables
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