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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[mirror_ubuntu-hirsute-kernel.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 #if defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF)
937 static int s3c24xx_gpio_xlate(struct gpio_chip *gc,
938 const struct of_phandle_args *gpiospec, u32 *flags)
939 {
940 unsigned int pin;
941
942 if (WARN_ON(gc->of_gpio_n_cells < 3))
943 return -EINVAL;
944
945 if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
946 return -EINVAL;
947
948 if (gpiospec->args[0] > gc->ngpio)
949 return -EINVAL;
950
951 pin = gc->base + gpiospec->args[0];
952
953 if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
954 pr_warn("gpio_xlate: failed to set pin function\n");
955 if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
956 pr_warn("gpio_xlate: failed to set pin pull up/down\n");
957
958 if (flags)
959 *flags = gpiospec->args[2] >> 16;
960
961 return gpiospec->args[0];
962 }
963
964 static const struct of_device_id s3c24xx_gpio_dt_match[] __initdata = {
965 { .compatible = "samsung,s3c24xx-gpio", },
966 {}
967 };
968
969 static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
970 u64 base, u64 offset)
971 {
972 struct gpio_chip *gc = &chip->chip;
973 u64 address;
974
975 if (!of_have_populated_dt())
976 return;
977
978 address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
979 gc->of_node = of_find_matching_node_by_address(NULL,
980 s3c24xx_gpio_dt_match, address);
981 if (!gc->of_node) {
982 pr_info("gpio: device tree node not found for gpio controller"
983 " with base address %08llx\n", address);
984 return;
985 }
986 gc->of_gpio_n_cells = 3;
987 gc->of_xlate = s3c24xx_gpio_xlate;
988 }
989 #else
990 static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
991 u64 base, u64 offset)
992 {
993 return;
994 }
995 #endif /* defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF) */
996
997 static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
998 int nr_chips, void __iomem *base)
999 {
1000 int i;
1001 struct gpio_chip *gc = &chip->chip;
1002
1003 for (i = 0 ; i < nr_chips; i++, chip++) {
1004 /* skip banks not present on SoC */
1005 if (chip->chip.base >= S3C_GPIO_END)
1006 continue;
1007
1008 if (!chip->config)
1009 chip->config = &s3c24xx_gpiocfg_default;
1010 if (!chip->pm)
1011 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
1012 if ((base != NULL) && (chip->base == NULL))
1013 chip->base = base + ((i) * 0x10);
1014
1015 if (!gc->direction_input)
1016 gc->direction_input = samsung_gpiolib_2bit_input;
1017 if (!gc->direction_output)
1018 gc->direction_output = samsung_gpiolib_2bit_output;
1019
1020 samsung_gpiolib_add(chip);
1021
1022 s3c24xx_gpiolib_attach_ofnode(chip, S3C24XX_PA_GPIO, i * 0x10);
1023 }
1024 }
1025
1026 static void __init samsung_gpiolib_add_2bit_chips(struct samsung_gpio_chip *chip,
1027 int nr_chips, void __iomem *base,
1028 unsigned int offset)
1029 {
1030 int i;
1031
1032 for (i = 0 ; i < nr_chips; i++, chip++) {
1033 chip->chip.direction_input = samsung_gpiolib_2bit_input;
1034 chip->chip.direction_output = samsung_gpiolib_2bit_output;
1035
1036 if (!chip->config)
1037 chip->config = &samsung_gpio_cfgs[7];
1038 if (!chip->pm)
1039 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
1040 if ((base != NULL) && (chip->base == NULL))
1041 chip->base = base + ((i) * offset);
1042
1043 samsung_gpiolib_add(chip);
1044 }
1045 }
1046
1047 /*
1048 * samsung_gpiolib_add_4bit_chips - 4bit single register GPIO config.
1049 * @chip: The gpio chip that is being configured.
1050 * @nr_chips: The no of chips (gpio ports) for the GPIO being configured.
1051 *
1052 * This helper deal with the GPIO cases where the control register has 4 bits
1053 * of control per GPIO, generally in the form of:
1054 * 0000 = Input
1055 * 0001 = Output
1056 * others = Special functions (dependent on bank)
1057 *
1058 * Note, since the code to deal with the case where there are two control
1059 * registers instead of one, we do not have a separate set of function
1060 * (samsung_gpiolib_add_4bit2_chips)for each case.
1061 */
1062
1063 static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip,
1064 int nr_chips, void __iomem *base)
1065 {
1066 int i;
1067
1068 for (i = 0 ; i < nr_chips; i++, chip++) {
1069 chip->chip.direction_input = samsung_gpiolib_4bit_input;
1070 chip->chip.direction_output = samsung_gpiolib_4bit_output;
1071
1072 if (!chip->config)
1073 chip->config = &samsung_gpio_cfgs[2];
1074 if (!chip->pm)
1075 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1076 if ((base != NULL) && (chip->base == NULL))
1077 chip->base = base + ((i) * 0x20);
1078
1079 chip->bitmap_gpio_int = 0;
1080
1081 samsung_gpiolib_add(chip);
1082 }
1083 }
1084
1085 static void __init samsung_gpiolib_add_4bit2_chips(struct samsung_gpio_chip *chip,
1086 int nr_chips)
1087 {
1088 for (; nr_chips > 0; nr_chips--, chip++) {
1089 chip->chip.direction_input = samsung_gpiolib_4bit2_input;
1090 chip->chip.direction_output = samsung_gpiolib_4bit2_output;
1091
1092 if (!chip->config)
1093 chip->config = &samsung_gpio_cfgs[2];
1094 if (!chip->pm)
1095 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1096
1097 samsung_gpiolib_add(chip);
1098 }
1099 }
1100
1101 static void __init s5p64x0_gpiolib_add_rbank(struct samsung_gpio_chip *chip,
1102 int nr_chips)
1103 {
1104 for (; nr_chips > 0; nr_chips--, chip++) {
1105 chip->chip.direction_input = s5p64x0_gpiolib_rbank_input;
1106 chip->chip.direction_output = s5p64x0_gpiolib_rbank_output;
1107
1108 if (!chip->pm)
1109 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
1110
1111 samsung_gpiolib_add(chip);
1112 }
1113 }
1114
1115 int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
1116 {
1117 struct samsung_gpio_chip *samsung_chip = container_of(chip, struct samsung_gpio_chip, chip);
1118
1119 return samsung_chip->irq_base + offset;
1120 }
1121
1122 #ifdef CONFIG_PLAT_S3C24XX
1123 static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
1124 {
1125 if (offset < 4)
1126 return IRQ_EINT0 + offset;
1127
1128 if (offset < 8)
1129 return IRQ_EINT4 + offset - 4;
1130
1131 return -EINVAL;
1132 }
1133 #endif
1134
1135 #ifdef CONFIG_PLAT_S3C64XX
1136 static int s3c64xx_gpiolib_mbank_to_irq(struct gpio_chip *chip, unsigned pin)
1137 {
1138 return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
1139 }
1140
1141 static int s3c64xx_gpiolib_lbank_to_irq(struct gpio_chip *chip, unsigned pin)
1142 {
1143 return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
1144 }
1145 #endif
1146
1147 struct samsung_gpio_chip s3c24xx_gpios[] = {
1148 #ifdef CONFIG_PLAT_S3C24XX
1149 {
1150 .config = &s3c24xx_gpiocfg_banka,
1151 .chip = {
1152 .base = S3C2410_GPA(0),
1153 .owner = THIS_MODULE,
1154 .label = "GPIOA",
1155 .ngpio = 24,
1156 .direction_input = s3c24xx_gpiolib_banka_input,
1157 .direction_output = s3c24xx_gpiolib_banka_output,
1158 },
1159 }, {
1160 .chip = {
1161 .base = S3C2410_GPB(0),
1162 .owner = THIS_MODULE,
1163 .label = "GPIOB",
1164 .ngpio = 16,
1165 },
1166 }, {
1167 .chip = {
1168 .base = S3C2410_GPC(0),
1169 .owner = THIS_MODULE,
1170 .label = "GPIOC",
1171 .ngpio = 16,
1172 },
1173 }, {
1174 .chip = {
1175 .base = S3C2410_GPD(0),
1176 .owner = THIS_MODULE,
1177 .label = "GPIOD",
1178 .ngpio = 16,
1179 },
1180 }, {
1181 .chip = {
1182 .base = S3C2410_GPE(0),
1183 .label = "GPIOE",
1184 .owner = THIS_MODULE,
1185 .ngpio = 16,
1186 },
1187 }, {
1188 .chip = {
1189 .base = S3C2410_GPF(0),
1190 .owner = THIS_MODULE,
1191 .label = "GPIOF",
1192 .ngpio = 8,
1193 .to_irq = s3c24xx_gpiolib_fbank_to_irq,
1194 },
1195 }, {
1196 .irq_base = IRQ_EINT8,
1197 .chip = {
1198 .base = S3C2410_GPG(0),
1199 .owner = THIS_MODULE,
1200 .label = "GPIOG",
1201 .ngpio = 16,
1202 .to_irq = samsung_gpiolib_to_irq,
1203 },
1204 }, {
1205 .chip = {
1206 .base = S3C2410_GPH(0),
1207 .owner = THIS_MODULE,
1208 .label = "GPIOH",
1209 .ngpio = 11,
1210 },
1211 },
1212 /* GPIOS for the S3C2443 and later devices. */
1213 {
1214 .base = S3C2440_GPJCON,
1215 .chip = {
1216 .base = S3C2410_GPJ(0),
1217 .owner = THIS_MODULE,
1218 .label = "GPIOJ",
1219 .ngpio = 16,
1220 },
1221 }, {
1222 .base = S3C2443_GPKCON,
1223 .chip = {
1224 .base = S3C2410_GPK(0),
1225 .owner = THIS_MODULE,
1226 .label = "GPIOK",
1227 .ngpio = 16,
1228 },
1229 }, {
1230 .base = S3C2443_GPLCON,
1231 .chip = {
1232 .base = S3C2410_GPL(0),
1233 .owner = THIS_MODULE,
1234 .label = "GPIOL",
1235 .ngpio = 15,
1236 },
1237 }, {
1238 .base = S3C2443_GPMCON,
1239 .chip = {
1240 .base = S3C2410_GPM(0),
1241 .owner = THIS_MODULE,
1242 .label = "GPIOM",
1243 .ngpio = 2,
1244 },
1245 },
1246 #endif
1247 };
1248
1249 /*
1250 * GPIO bank summary:
1251 *
1252 * Bank GPIOs Style SlpCon ExtInt Group
1253 * A 8 4Bit Yes 1
1254 * B 7 4Bit Yes 1
1255 * C 8 4Bit Yes 2
1256 * D 5 4Bit Yes 3
1257 * E 5 4Bit Yes None
1258 * F 16 2Bit Yes 4 [1]
1259 * G 7 4Bit Yes 5
1260 * H 10 4Bit[2] Yes 6
1261 * I 16 2Bit Yes None
1262 * J 12 2Bit Yes None
1263 * K 16 4Bit[2] No None
1264 * L 15 4Bit[2] No None
1265 * M 6 4Bit No IRQ_EINT
1266 * N 16 2Bit No IRQ_EINT
1267 * O 16 2Bit Yes 7
1268 * P 15 2Bit Yes 8
1269 * Q 9 2Bit Yes 9
1270 *
1271 * [1] BANKF pins 14,15 do not form part of the external interrupt sources
1272 * [2] BANK has two control registers, GPxCON0 and GPxCON1
1273 */
1274
1275 static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = {
1276 #ifdef CONFIG_PLAT_S3C64XX
1277 {
1278 .chip = {
1279 .base = S3C64XX_GPA(0),
1280 .ngpio = S3C64XX_GPIO_A_NR,
1281 .label = "GPA",
1282 },
1283 }, {
1284 .chip = {
1285 .base = S3C64XX_GPB(0),
1286 .ngpio = S3C64XX_GPIO_B_NR,
1287 .label = "GPB",
1288 },
1289 }, {
1290 .chip = {
1291 .base = S3C64XX_GPC(0),
1292 .ngpio = S3C64XX_GPIO_C_NR,
1293 .label = "GPC",
1294 },
1295 }, {
1296 .chip = {
1297 .base = S3C64XX_GPD(0),
1298 .ngpio = S3C64XX_GPIO_D_NR,
1299 .label = "GPD",
1300 },
1301 }, {
1302 .config = &samsung_gpio_cfgs[0],
1303 .chip = {
1304 .base = S3C64XX_GPE(0),
1305 .ngpio = S3C64XX_GPIO_E_NR,
1306 .label = "GPE",
1307 },
1308 }, {
1309 .base = S3C64XX_GPG_BASE,
1310 .chip = {
1311 .base = S3C64XX_GPG(0),
1312 .ngpio = S3C64XX_GPIO_G_NR,
1313 .label = "GPG",
1314 },
1315 }, {
1316 .base = S3C64XX_GPM_BASE,
1317 .config = &samsung_gpio_cfgs[1],
1318 .chip = {
1319 .base = S3C64XX_GPM(0),
1320 .ngpio = S3C64XX_GPIO_M_NR,
1321 .label = "GPM",
1322 .to_irq = s3c64xx_gpiolib_mbank_to_irq,
1323 },
1324 },
1325 #endif
1326 };
1327
1328 static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = {
1329 #ifdef CONFIG_PLAT_S3C64XX
1330 {
1331 .base = S3C64XX_GPH_BASE + 0x4,
1332 .chip = {
1333 .base = S3C64XX_GPH(0),
1334 .ngpio = S3C64XX_GPIO_H_NR,
1335 .label = "GPH",
1336 },
1337 }, {
1338 .base = S3C64XX_GPK_BASE + 0x4,
1339 .config = &samsung_gpio_cfgs[0],
1340 .chip = {
1341 .base = S3C64XX_GPK(0),
1342 .ngpio = S3C64XX_GPIO_K_NR,
1343 .label = "GPK",
1344 },
1345 }, {
1346 .base = S3C64XX_GPL_BASE + 0x4,
1347 .config = &samsung_gpio_cfgs[1],
1348 .chip = {
1349 .base = S3C64XX_GPL(0),
1350 .ngpio = S3C64XX_GPIO_L_NR,
1351 .label = "GPL",
1352 .to_irq = s3c64xx_gpiolib_lbank_to_irq,
1353 },
1354 },
1355 #endif
1356 };
1357
1358 static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = {
1359 #ifdef CONFIG_PLAT_S3C64XX
1360 {
1361 .base = S3C64XX_GPF_BASE,
1362 .config = &samsung_gpio_cfgs[6],
1363 .chip = {
1364 .base = S3C64XX_GPF(0),
1365 .ngpio = S3C64XX_GPIO_F_NR,
1366 .label = "GPF",
1367 },
1368 }, {
1369 .config = &samsung_gpio_cfgs[7],
1370 .chip = {
1371 .base = S3C64XX_GPI(0),
1372 .ngpio = S3C64XX_GPIO_I_NR,
1373 .label = "GPI",
1374 },
1375 }, {
1376 .config = &samsung_gpio_cfgs[7],
1377 .chip = {
1378 .base = S3C64XX_GPJ(0),
1379 .ngpio = S3C64XX_GPIO_J_NR,
1380 .label = "GPJ",
1381 },
1382 }, {
1383 .config = &samsung_gpio_cfgs[6],
1384 .chip = {
1385 .base = S3C64XX_GPO(0),
1386 .ngpio = S3C64XX_GPIO_O_NR,
1387 .label = "GPO",
1388 },
1389 }, {
1390 .config = &samsung_gpio_cfgs[6],
1391 .chip = {
1392 .base = S3C64XX_GPP(0),
1393 .ngpio = S3C64XX_GPIO_P_NR,
1394 .label = "GPP",
1395 },
1396 }, {
1397 .config = &samsung_gpio_cfgs[6],
1398 .chip = {
1399 .base = S3C64XX_GPQ(0),
1400 .ngpio = S3C64XX_GPIO_Q_NR,
1401 .label = "GPQ",
1402 },
1403 }, {
1404 .base = S3C64XX_GPN_BASE,
1405 .irq_base = IRQ_EINT(0),
1406 .config = &samsung_gpio_cfgs[5],
1407 .chip = {
1408 .base = S3C64XX_GPN(0),
1409 .ngpio = S3C64XX_GPIO_N_NR,
1410 .label = "GPN",
1411 .to_irq = samsung_gpiolib_to_irq,
1412 },
1413 },
1414 #endif
1415 };
1416
1417 /*
1418 * S5P6440 GPIO bank summary:
1419 *
1420 * Bank GPIOs Style SlpCon ExtInt Group
1421 * A 6 4Bit Yes 1
1422 * B 7 4Bit Yes 1
1423 * C 8 4Bit Yes 2
1424 * F 2 2Bit Yes 4 [1]
1425 * G 7 4Bit Yes 5
1426 * H 10 4Bit[2] Yes 6
1427 * I 16 2Bit Yes None
1428 * J 12 2Bit Yes None
1429 * N 16 2Bit No IRQ_EINT
1430 * P 8 2Bit Yes 8
1431 * R 15 4Bit[2] Yes 8
1432 */
1433
1434 static struct samsung_gpio_chip s5p6440_gpios_4bit[] = {
1435 #ifdef CONFIG_CPU_S5P6440
1436 {
1437 .chip = {
1438 .base = S5P6440_GPA(0),
1439 .ngpio = S5P6440_GPIO_A_NR,
1440 .label = "GPA",
1441 },
1442 }, {
1443 .chip = {
1444 .base = S5P6440_GPB(0),
1445 .ngpio = S5P6440_GPIO_B_NR,
1446 .label = "GPB",
1447 },
1448 }, {
1449 .chip = {
1450 .base = S5P6440_GPC(0),
1451 .ngpio = S5P6440_GPIO_C_NR,
1452 .label = "GPC",
1453 },
1454 }, {
1455 .base = S5P64X0_GPG_BASE,
1456 .chip = {
1457 .base = S5P6440_GPG(0),
1458 .ngpio = S5P6440_GPIO_G_NR,
1459 .label = "GPG",
1460 },
1461 },
1462 #endif
1463 };
1464
1465 static struct samsung_gpio_chip s5p6440_gpios_4bit2[] = {
1466 #ifdef CONFIG_CPU_S5P6440
1467 {
1468 .base = S5P64X0_GPH_BASE + 0x4,
1469 .chip = {
1470 .base = S5P6440_GPH(0),
1471 .ngpio = S5P6440_GPIO_H_NR,
1472 .label = "GPH",
1473 },
1474 },
1475 #endif
1476 };
1477
1478 static struct samsung_gpio_chip s5p6440_gpios_rbank[] = {
1479 #ifdef CONFIG_CPU_S5P6440
1480 {
1481 .base = S5P64X0_GPR_BASE + 0x4,
1482 .config = &s5p64x0_gpio_cfg_rbank,
1483 .chip = {
1484 .base = S5P6440_GPR(0),
1485 .ngpio = S5P6440_GPIO_R_NR,
1486 .label = "GPR",
1487 },
1488 },
1489 #endif
1490 };
1491
1492 static struct samsung_gpio_chip s5p6440_gpios_2bit[] = {
1493 #ifdef CONFIG_CPU_S5P6440
1494 {
1495 .base = S5P64X0_GPF_BASE,
1496 .config = &samsung_gpio_cfgs[6],
1497 .chip = {
1498 .base = S5P6440_GPF(0),
1499 .ngpio = S5P6440_GPIO_F_NR,
1500 .label = "GPF",
1501 },
1502 }, {
1503 .base = S5P64X0_GPI_BASE,
1504 .config = &samsung_gpio_cfgs[4],
1505 .chip = {
1506 .base = S5P6440_GPI(0),
1507 .ngpio = S5P6440_GPIO_I_NR,
1508 .label = "GPI",
1509 },
1510 }, {
1511 .base = S5P64X0_GPJ_BASE,
1512 .config = &samsung_gpio_cfgs[4],
1513 .chip = {
1514 .base = S5P6440_GPJ(0),
1515 .ngpio = S5P6440_GPIO_J_NR,
1516 .label = "GPJ",
1517 },
1518 }, {
1519 .base = S5P64X0_GPN_BASE,
1520 .config = &samsung_gpio_cfgs[5],
1521 .chip = {
1522 .base = S5P6440_GPN(0),
1523 .ngpio = S5P6440_GPIO_N_NR,
1524 .label = "GPN",
1525 },
1526 }, {
1527 .base = S5P64X0_GPP_BASE,
1528 .config = &samsung_gpio_cfgs[6],
1529 .chip = {
1530 .base = S5P6440_GPP(0),
1531 .ngpio = S5P6440_GPIO_P_NR,
1532 .label = "GPP",
1533 },
1534 },
1535 #endif
1536 };
1537
1538 /*
1539 * S5P6450 GPIO bank summary:
1540 *
1541 * Bank GPIOs Style SlpCon ExtInt Group
1542 * A 6 4Bit Yes 1
1543 * B 7 4Bit Yes 1
1544 * C 8 4Bit Yes 2
1545 * D 8 4Bit Yes None
1546 * F 2 2Bit Yes None
1547 * G 14 4Bit[2] Yes 5
1548 * H 10 4Bit[2] Yes 6
1549 * I 16 2Bit Yes None
1550 * J 12 2Bit Yes None
1551 * K 5 4Bit Yes None
1552 * N 16 2Bit No IRQ_EINT
1553 * P 11 2Bit Yes 8
1554 * Q 14 2Bit Yes None
1555 * R 15 4Bit[2] Yes None
1556 * S 8 2Bit Yes None
1557 *
1558 * [1] BANKF pins 14,15 do not form part of the external interrupt sources
1559 * [2] BANK has two control registers, GPxCON0 and GPxCON1
1560 */
1561
1562 static struct samsung_gpio_chip s5p6450_gpios_4bit[] = {
1563 #ifdef CONFIG_CPU_S5P6450
1564 {
1565 .chip = {
1566 .base = S5P6450_GPA(0),
1567 .ngpio = S5P6450_GPIO_A_NR,
1568 .label = "GPA",
1569 },
1570 }, {
1571 .chip = {
1572 .base = S5P6450_GPB(0),
1573 .ngpio = S5P6450_GPIO_B_NR,
1574 .label = "GPB",
1575 },
1576 }, {
1577 .chip = {
1578 .base = S5P6450_GPC(0),
1579 .ngpio = S5P6450_GPIO_C_NR,
1580 .label = "GPC",
1581 },
1582 }, {
1583 .chip = {
1584 .base = S5P6450_GPD(0),
1585 .ngpio = S5P6450_GPIO_D_NR,
1586 .label = "GPD",
1587 },
1588 }, {
1589 .base = S5P6450_GPK_BASE,
1590 .chip = {
1591 .base = S5P6450_GPK(0),
1592 .ngpio = S5P6450_GPIO_K_NR,
1593 .label = "GPK",
1594 },
1595 },
1596 #endif
1597 };
1598
1599 static struct samsung_gpio_chip s5p6450_gpios_4bit2[] = {
1600 #ifdef CONFIG_CPU_S5P6450
1601 {
1602 .base = S5P64X0_GPG_BASE + 0x4,
1603 .chip = {
1604 .base = S5P6450_GPG(0),
1605 .ngpio = S5P6450_GPIO_G_NR,
1606 .label = "GPG",
1607 },
1608 }, {
1609 .base = S5P64X0_GPH_BASE + 0x4,
1610 .chip = {
1611 .base = S5P6450_GPH(0),
1612 .ngpio = S5P6450_GPIO_H_NR,
1613 .label = "GPH",
1614 },
1615 },
1616 #endif
1617 };
1618
1619 static struct samsung_gpio_chip s5p6450_gpios_rbank[] = {
1620 #ifdef CONFIG_CPU_S5P6450
1621 {
1622 .base = S5P64X0_GPR_BASE + 0x4,
1623 .config = &s5p64x0_gpio_cfg_rbank,
1624 .chip = {
1625 .base = S5P6450_GPR(0),
1626 .ngpio = S5P6450_GPIO_R_NR,
1627 .label = "GPR",
1628 },
1629 },
1630 #endif
1631 };
1632
1633 static struct samsung_gpio_chip s5p6450_gpios_2bit[] = {
1634 #ifdef CONFIG_CPU_S5P6450
1635 {
1636 .base = S5P64X0_GPF_BASE,
1637 .config = &samsung_gpio_cfgs[6],
1638 .chip = {
1639 .base = S5P6450_GPF(0),
1640 .ngpio = S5P6450_GPIO_F_NR,
1641 .label = "GPF",
1642 },
1643 }, {
1644 .base = S5P64X0_GPI_BASE,
1645 .config = &samsung_gpio_cfgs[4],
1646 .chip = {
1647 .base = S5P6450_GPI(0),
1648 .ngpio = S5P6450_GPIO_I_NR,
1649 .label = "GPI",
1650 },
1651 }, {
1652 .base = S5P64X0_GPJ_BASE,
1653 .config = &samsung_gpio_cfgs[4],
1654 .chip = {
1655 .base = S5P6450_GPJ(0),
1656 .ngpio = S5P6450_GPIO_J_NR,
1657 .label = "GPJ",
1658 },
1659 }, {
1660 .base = S5P64X0_GPN_BASE,
1661 .config = &samsung_gpio_cfgs[5],
1662 .chip = {
1663 .base = S5P6450_GPN(0),
1664 .ngpio = S5P6450_GPIO_N_NR,
1665 .label = "GPN",
1666 },
1667 }, {
1668 .base = S5P64X0_GPP_BASE,
1669 .config = &samsung_gpio_cfgs[6],
1670 .chip = {
1671 .base = S5P6450_GPP(0),
1672 .ngpio = S5P6450_GPIO_P_NR,
1673 .label = "GPP",
1674 },
1675 }, {
1676 .base = S5P6450_GPQ_BASE,
1677 .config = &samsung_gpio_cfgs[5],
1678 .chip = {
1679 .base = S5P6450_GPQ(0),
1680 .ngpio = S5P6450_GPIO_Q_NR,
1681 .label = "GPQ",
1682 },
1683 }, {
1684 .base = S5P6450_GPS_BASE,
1685 .config = &samsung_gpio_cfgs[6],
1686 .chip = {
1687 .base = S5P6450_GPS(0),
1688 .ngpio = S5P6450_GPIO_S_NR,
1689 .label = "GPS",
1690 },
1691 },
1692 #endif
1693 };
1694
1695 /*
1696 * S5PC100 GPIO bank summary:
1697 *
1698 * Bank GPIOs Style INT Type
1699 * A0 8 4Bit GPIO_INT0
1700 * A1 5 4Bit GPIO_INT1
1701 * B 8 4Bit GPIO_INT2
1702 * C 5 4Bit GPIO_INT3
1703 * D 7 4Bit GPIO_INT4
1704 * E0 8 4Bit GPIO_INT5
1705 * E1 6 4Bit GPIO_INT6
1706 * F0 8 4Bit GPIO_INT7
1707 * F1 8 4Bit GPIO_INT8
1708 * F2 8 4Bit GPIO_INT9
1709 * F3 4 4Bit GPIO_INT10
1710 * G0 8 4Bit GPIO_INT11
1711 * G1 3 4Bit GPIO_INT12
1712 * G2 7 4Bit GPIO_INT13
1713 * G3 7 4Bit GPIO_INT14
1714 * H0 8 4Bit WKUP_INT
1715 * H1 8 4Bit WKUP_INT
1716 * H2 8 4Bit WKUP_INT
1717 * H3 8 4Bit WKUP_INT
1718 * I 8 4Bit GPIO_INT15
1719 * J0 8 4Bit GPIO_INT16
1720 * J1 5 4Bit GPIO_INT17
1721 * J2 8 4Bit GPIO_INT18
1722 * J3 8 4Bit GPIO_INT19
1723 * J4 4 4Bit GPIO_INT20
1724 * K0 8 4Bit None
1725 * K1 6 4Bit None
1726 * K2 8 4Bit None
1727 * K3 8 4Bit None
1728 * L0 8 4Bit None
1729 * L1 8 4Bit None
1730 * L2 8 4Bit None
1731 * L3 8 4Bit None
1732 */
1733
1734 static struct samsung_gpio_chip s5pc100_gpios_4bit[] = {
1735 #ifdef CONFIG_CPU_S5PC100
1736 {
1737 .chip = {
1738 .base = S5PC100_GPA0(0),
1739 .ngpio = S5PC100_GPIO_A0_NR,
1740 .label = "GPA0",
1741 },
1742 }, {
1743 .chip = {
1744 .base = S5PC100_GPA1(0),
1745 .ngpio = S5PC100_GPIO_A1_NR,
1746 .label = "GPA1",
1747 },
1748 }, {
1749 .chip = {
1750 .base = S5PC100_GPB(0),
1751 .ngpio = S5PC100_GPIO_B_NR,
1752 .label = "GPB",
1753 },
1754 }, {
1755 .chip = {
1756 .base = S5PC100_GPC(0),
1757 .ngpio = S5PC100_GPIO_C_NR,
1758 .label = "GPC",
1759 },
1760 }, {
1761 .chip = {
1762 .base = S5PC100_GPD(0),
1763 .ngpio = S5PC100_GPIO_D_NR,
1764 .label = "GPD",
1765 },
1766 }, {
1767 .chip = {
1768 .base = S5PC100_GPE0(0),
1769 .ngpio = S5PC100_GPIO_E0_NR,
1770 .label = "GPE0",
1771 },
1772 }, {
1773 .chip = {
1774 .base = S5PC100_GPE1(0),
1775 .ngpio = S5PC100_GPIO_E1_NR,
1776 .label = "GPE1",
1777 },
1778 }, {
1779 .chip = {
1780 .base = S5PC100_GPF0(0),
1781 .ngpio = S5PC100_GPIO_F0_NR,
1782 .label = "GPF0",
1783 },
1784 }, {
1785 .chip = {
1786 .base = S5PC100_GPF1(0),
1787 .ngpio = S5PC100_GPIO_F1_NR,
1788 .label = "GPF1",
1789 },
1790 }, {
1791 .chip = {
1792 .base = S5PC100_GPF2(0),
1793 .ngpio = S5PC100_GPIO_F2_NR,
1794 .label = "GPF2",
1795 },
1796 }, {
1797 .chip = {
1798 .base = S5PC100_GPF3(0),
1799 .ngpio = S5PC100_GPIO_F3_NR,
1800 .label = "GPF3",
1801 },
1802 }, {
1803 .chip = {
1804 .base = S5PC100_GPG0(0),
1805 .ngpio = S5PC100_GPIO_G0_NR,
1806 .label = "GPG0",
1807 },
1808 }, {
1809 .chip = {
1810 .base = S5PC100_GPG1(0),
1811 .ngpio = S5PC100_GPIO_G1_NR,
1812 .label = "GPG1",
1813 },
1814 }, {
1815 .chip = {
1816 .base = S5PC100_GPG2(0),
1817 .ngpio = S5PC100_GPIO_G2_NR,
1818 .label = "GPG2",
1819 },
1820 }, {
1821 .chip = {
1822 .base = S5PC100_GPG3(0),
1823 .ngpio = S5PC100_GPIO_G3_NR,
1824 .label = "GPG3",
1825 },
1826 }, {
1827 .chip = {
1828 .base = S5PC100_GPI(0),
1829 .ngpio = S5PC100_GPIO_I_NR,
1830 .label = "GPI",
1831 },
1832 }, {
1833 .chip = {
1834 .base = S5PC100_GPJ0(0),
1835 .ngpio = S5PC100_GPIO_J0_NR,
1836 .label = "GPJ0",
1837 },
1838 }, {
1839 .chip = {
1840 .base = S5PC100_GPJ1(0),
1841 .ngpio = S5PC100_GPIO_J1_NR,
1842 .label = "GPJ1",
1843 },
1844 }, {
1845 .chip = {
1846 .base = S5PC100_GPJ2(0),
1847 .ngpio = S5PC100_GPIO_J2_NR,
1848 .label = "GPJ2",
1849 },
1850 }, {
1851 .chip = {
1852 .base = S5PC100_GPJ3(0),
1853 .ngpio = S5PC100_GPIO_J3_NR,
1854 .label = "GPJ3",
1855 },
1856 }, {
1857 .chip = {
1858 .base = S5PC100_GPJ4(0),
1859 .ngpio = S5PC100_GPIO_J4_NR,
1860 .label = "GPJ4",
1861 },
1862 }, {
1863 .chip = {
1864 .base = S5PC100_GPK0(0),
1865 .ngpio = S5PC100_GPIO_K0_NR,
1866 .label = "GPK0",
1867 },
1868 }, {
1869 .chip = {
1870 .base = S5PC100_GPK1(0),
1871 .ngpio = S5PC100_GPIO_K1_NR,
1872 .label = "GPK1",
1873 },
1874 }, {
1875 .chip = {
1876 .base = S5PC100_GPK2(0),
1877 .ngpio = S5PC100_GPIO_K2_NR,
1878 .label = "GPK2",
1879 },
1880 }, {
1881 .chip = {
1882 .base = S5PC100_GPK3(0),
1883 .ngpio = S5PC100_GPIO_K3_NR,
1884 .label = "GPK3",
1885 },
1886 }, {
1887 .chip = {
1888 .base = S5PC100_GPL0(0),
1889 .ngpio = S5PC100_GPIO_L0_NR,
1890 .label = "GPL0",
1891 },
1892 }, {
1893 .chip = {
1894 .base = S5PC100_GPL1(0),
1895 .ngpio = S5PC100_GPIO_L1_NR,
1896 .label = "GPL1",
1897 },
1898 }, {
1899 .chip = {
1900 .base = S5PC100_GPL2(0),
1901 .ngpio = S5PC100_GPIO_L2_NR,
1902 .label = "GPL2",
1903 },
1904 }, {
1905 .chip = {
1906 .base = S5PC100_GPL3(0),
1907 .ngpio = S5PC100_GPIO_L3_NR,
1908 .label = "GPL3",
1909 },
1910 }, {
1911 .chip = {
1912 .base = S5PC100_GPL4(0),
1913 .ngpio = S5PC100_GPIO_L4_NR,
1914 .label = "GPL4",
1915 },
1916 }, {
1917 .base = (S5P_VA_GPIO + 0xC00),
1918 .irq_base = IRQ_EINT(0),
1919 .chip = {
1920 .base = S5PC100_GPH0(0),
1921 .ngpio = S5PC100_GPIO_H0_NR,
1922 .label = "GPH0",
1923 .to_irq = samsung_gpiolib_to_irq,
1924 },
1925 }, {
1926 .base = (S5P_VA_GPIO + 0xC20),
1927 .irq_base = IRQ_EINT(8),
1928 .chip = {
1929 .base = S5PC100_GPH1(0),
1930 .ngpio = S5PC100_GPIO_H1_NR,
1931 .label = "GPH1",
1932 .to_irq = samsung_gpiolib_to_irq,
1933 },
1934 }, {
1935 .base = (S5P_VA_GPIO + 0xC40),
1936 .irq_base = IRQ_EINT(16),
1937 .chip = {
1938 .base = S5PC100_GPH2(0),
1939 .ngpio = S5PC100_GPIO_H2_NR,
1940 .label = "GPH2",
1941 .to_irq = samsung_gpiolib_to_irq,
1942 },
1943 }, {
1944 .base = (S5P_VA_GPIO + 0xC60),
1945 .irq_base = IRQ_EINT(24),
1946 .chip = {
1947 .base = S5PC100_GPH3(0),
1948 .ngpio = S5PC100_GPIO_H3_NR,
1949 .label = "GPH3",
1950 .to_irq = samsung_gpiolib_to_irq,
1951 },
1952 },
1953 #endif
1954 };
1955
1956 /*
1957 * Followings are the gpio banks in S5PV210/S5PC110
1958 *
1959 * The 'config' member when left to NULL, is initialized to the default
1960 * structure samsung_gpio_cfgs[3] in the init function below.
1961 *
1962 * The 'base' member is also initialized in the init function below.
1963 * Note: The initialization of 'base' member of samsung_gpio_chip structure
1964 * uses the above macro and depends on the banks being listed in order here.
1965 */
1966
1967 static struct samsung_gpio_chip s5pv210_gpios_4bit[] = {
1968 #ifdef CONFIG_CPU_S5PV210
1969 {
1970 .chip = {
1971 .base = S5PV210_GPA0(0),
1972 .ngpio = S5PV210_GPIO_A0_NR,
1973 .label = "GPA0",
1974 },
1975 }, {
1976 .chip = {
1977 .base = S5PV210_GPA1(0),
1978 .ngpio = S5PV210_GPIO_A1_NR,
1979 .label = "GPA1",
1980 },
1981 }, {
1982 .chip = {
1983 .base = S5PV210_GPB(0),
1984 .ngpio = S5PV210_GPIO_B_NR,
1985 .label = "GPB",
1986 },
1987 }, {
1988 .chip = {
1989 .base = S5PV210_GPC0(0),
1990 .ngpio = S5PV210_GPIO_C0_NR,
1991 .label = "GPC0",
1992 },
1993 }, {
1994 .chip = {
1995 .base = S5PV210_GPC1(0),
1996 .ngpio = S5PV210_GPIO_C1_NR,
1997 .label = "GPC1",
1998 },
1999 }, {
2000 .chip = {
2001 .base = S5PV210_GPD0(0),
2002 .ngpio = S5PV210_GPIO_D0_NR,
2003 .label = "GPD0",
2004 },
2005 }, {
2006 .chip = {
2007 .base = S5PV210_GPD1(0),
2008 .ngpio = S5PV210_GPIO_D1_NR,
2009 .label = "GPD1",
2010 },
2011 }, {
2012 .chip = {
2013 .base = S5PV210_GPE0(0),
2014 .ngpio = S5PV210_GPIO_E0_NR,
2015 .label = "GPE0",
2016 },
2017 }, {
2018 .chip = {
2019 .base = S5PV210_GPE1(0),
2020 .ngpio = S5PV210_GPIO_E1_NR,
2021 .label = "GPE1",
2022 },
2023 }, {
2024 .chip = {
2025 .base = S5PV210_GPF0(0),
2026 .ngpio = S5PV210_GPIO_F0_NR,
2027 .label = "GPF0",
2028 },
2029 }, {
2030 .chip = {
2031 .base = S5PV210_GPF1(0),
2032 .ngpio = S5PV210_GPIO_F1_NR,
2033 .label = "GPF1",
2034 },
2035 }, {
2036 .chip = {
2037 .base = S5PV210_GPF2(0),
2038 .ngpio = S5PV210_GPIO_F2_NR,
2039 .label = "GPF2",
2040 },
2041 }, {
2042 .chip = {
2043 .base = S5PV210_GPF3(0),
2044 .ngpio = S5PV210_GPIO_F3_NR,
2045 .label = "GPF3",
2046 },
2047 }, {
2048 .chip = {
2049 .base = S5PV210_GPG0(0),
2050 .ngpio = S5PV210_GPIO_G0_NR,
2051 .label = "GPG0",
2052 },
2053 }, {
2054 .chip = {
2055 .base = S5PV210_GPG1(0),
2056 .ngpio = S5PV210_GPIO_G1_NR,
2057 .label = "GPG1",
2058 },
2059 }, {
2060 .chip = {
2061 .base = S5PV210_GPG2(0),
2062 .ngpio = S5PV210_GPIO_G2_NR,
2063 .label = "GPG2",
2064 },
2065 }, {
2066 .chip = {
2067 .base = S5PV210_GPG3(0),
2068 .ngpio = S5PV210_GPIO_G3_NR,
2069 .label = "GPG3",
2070 },
2071 }, {
2072 .chip = {
2073 .base = S5PV210_GPI(0),
2074 .ngpio = S5PV210_GPIO_I_NR,
2075 .label = "GPI",
2076 },
2077 }, {
2078 .chip = {
2079 .base = S5PV210_GPJ0(0),
2080 .ngpio = S5PV210_GPIO_J0_NR,
2081 .label = "GPJ0",
2082 },
2083 }, {
2084 .chip = {
2085 .base = S5PV210_GPJ1(0),
2086 .ngpio = S5PV210_GPIO_J1_NR,
2087 .label = "GPJ1",
2088 },
2089 }, {
2090 .chip = {
2091 .base = S5PV210_GPJ2(0),
2092 .ngpio = S5PV210_GPIO_J2_NR,
2093 .label = "GPJ2",
2094 },
2095 }, {
2096 .chip = {
2097 .base = S5PV210_GPJ3(0),
2098 .ngpio = S5PV210_GPIO_J3_NR,
2099 .label = "GPJ3",
2100 },
2101 }, {
2102 .chip = {
2103 .base = S5PV210_GPJ4(0),
2104 .ngpio = S5PV210_GPIO_J4_NR,
2105 .label = "GPJ4",
2106 },
2107 }, {
2108 .chip = {
2109 .base = S5PV210_MP01(0),
2110 .ngpio = S5PV210_GPIO_MP01_NR,
2111 .label = "MP01",
2112 },
2113 }, {
2114 .chip = {
2115 .base = S5PV210_MP02(0),
2116 .ngpio = S5PV210_GPIO_MP02_NR,
2117 .label = "MP02",
2118 },
2119 }, {
2120 .chip = {
2121 .base = S5PV210_MP03(0),
2122 .ngpio = S5PV210_GPIO_MP03_NR,
2123 .label = "MP03",
2124 },
2125 }, {
2126 .chip = {
2127 .base = S5PV210_MP04(0),
2128 .ngpio = S5PV210_GPIO_MP04_NR,
2129 .label = "MP04",
2130 },
2131 }, {
2132 .chip = {
2133 .base = S5PV210_MP05(0),
2134 .ngpio = S5PV210_GPIO_MP05_NR,
2135 .label = "MP05",
2136 },
2137 }, {
2138 .base = (S5P_VA_GPIO + 0xC00),
2139 .irq_base = IRQ_EINT(0),
2140 .chip = {
2141 .base = S5PV210_GPH0(0),
2142 .ngpio = S5PV210_GPIO_H0_NR,
2143 .label = "GPH0",
2144 .to_irq = samsung_gpiolib_to_irq,
2145 },
2146 }, {
2147 .base = (S5P_VA_GPIO + 0xC20),
2148 .irq_base = IRQ_EINT(8),
2149 .chip = {
2150 .base = S5PV210_GPH1(0),
2151 .ngpio = S5PV210_GPIO_H1_NR,
2152 .label = "GPH1",
2153 .to_irq = samsung_gpiolib_to_irq,
2154 },
2155 }, {
2156 .base = (S5P_VA_GPIO + 0xC40),
2157 .irq_base = IRQ_EINT(16),
2158 .chip = {
2159 .base = S5PV210_GPH2(0),
2160 .ngpio = S5PV210_GPIO_H2_NR,
2161 .label = "GPH2",
2162 .to_irq = samsung_gpiolib_to_irq,
2163 },
2164 }, {
2165 .base = (S5P_VA_GPIO + 0xC60),
2166 .irq_base = IRQ_EINT(24),
2167 .chip = {
2168 .base = S5PV210_GPH3(0),
2169 .ngpio = S5PV210_GPIO_H3_NR,
2170 .label = "GPH3",
2171 .to_irq = samsung_gpiolib_to_irq,
2172 },
2173 },
2174 #endif
2175 };
2176
2177 /*
2178 * Followings are the gpio banks in EXYNOS SoCs
2179 *
2180 * The 'config' member when left to NULL, is initialized to the default
2181 * structure exynos_gpio_cfg in the init function below.
2182 *
2183 * The 'base' member is also initialized in the init function below.
2184 * Note: The initialization of 'base' member of samsung_gpio_chip structure
2185 * uses the above macro and depends on the banks being listed in order here.
2186 */
2187
2188 #ifdef CONFIG_ARCH_EXYNOS4
2189 static struct samsung_gpio_chip exynos4_gpios_1[] = {
2190 {
2191 .chip = {
2192 .base = EXYNOS4_GPA0(0),
2193 .ngpio = EXYNOS4_GPIO_A0_NR,
2194 .label = "GPA0",
2195 },
2196 }, {
2197 .chip = {
2198 .base = EXYNOS4_GPA1(0),
2199 .ngpio = EXYNOS4_GPIO_A1_NR,
2200 .label = "GPA1",
2201 },
2202 }, {
2203 .chip = {
2204 .base = EXYNOS4_GPB(0),
2205 .ngpio = EXYNOS4_GPIO_B_NR,
2206 .label = "GPB",
2207 },
2208 }, {
2209 .chip = {
2210 .base = EXYNOS4_GPC0(0),
2211 .ngpio = EXYNOS4_GPIO_C0_NR,
2212 .label = "GPC0",
2213 },
2214 }, {
2215 .chip = {
2216 .base = EXYNOS4_GPC1(0),
2217 .ngpio = EXYNOS4_GPIO_C1_NR,
2218 .label = "GPC1",
2219 },
2220 }, {
2221 .chip = {
2222 .base = EXYNOS4_GPD0(0),
2223 .ngpio = EXYNOS4_GPIO_D0_NR,
2224 .label = "GPD0",
2225 },
2226 }, {
2227 .chip = {
2228 .base = EXYNOS4_GPD1(0),
2229 .ngpio = EXYNOS4_GPIO_D1_NR,
2230 .label = "GPD1",
2231 },
2232 }, {
2233 .chip = {
2234 .base = EXYNOS4_GPE0(0),
2235 .ngpio = EXYNOS4_GPIO_E0_NR,
2236 .label = "GPE0",
2237 },
2238 }, {
2239 .chip = {
2240 .base = EXYNOS4_GPE1(0),
2241 .ngpio = EXYNOS4_GPIO_E1_NR,
2242 .label = "GPE1",
2243 },
2244 }, {
2245 .chip = {
2246 .base = EXYNOS4_GPE2(0),
2247 .ngpio = EXYNOS4_GPIO_E2_NR,
2248 .label = "GPE2",
2249 },
2250 }, {
2251 .chip = {
2252 .base = EXYNOS4_GPE3(0),
2253 .ngpio = EXYNOS4_GPIO_E3_NR,
2254 .label = "GPE3",
2255 },
2256 }, {
2257 .chip = {
2258 .base = EXYNOS4_GPE4(0),
2259 .ngpio = EXYNOS4_GPIO_E4_NR,
2260 .label = "GPE4",
2261 },
2262 }, {
2263 .chip = {
2264 .base = EXYNOS4_GPF0(0),
2265 .ngpio = EXYNOS4_GPIO_F0_NR,
2266 .label = "GPF0",
2267 },
2268 }, {
2269 .chip = {
2270 .base = EXYNOS4_GPF1(0),
2271 .ngpio = EXYNOS4_GPIO_F1_NR,
2272 .label = "GPF1",
2273 },
2274 }, {
2275 .chip = {
2276 .base = EXYNOS4_GPF2(0),
2277 .ngpio = EXYNOS4_GPIO_F2_NR,
2278 .label = "GPF2",
2279 },
2280 }, {
2281 .chip = {
2282 .base = EXYNOS4_GPF3(0),
2283 .ngpio = EXYNOS4_GPIO_F3_NR,
2284 .label = "GPF3",
2285 },
2286 },
2287 };
2288 #endif
2289
2290 #ifdef CONFIG_ARCH_EXYNOS4
2291 static struct samsung_gpio_chip exynos4_gpios_2[] = {
2292 {
2293 .chip = {
2294 .base = EXYNOS4_GPJ0(0),
2295 .ngpio = EXYNOS4_GPIO_J0_NR,
2296 .label = "GPJ0",
2297 },
2298 }, {
2299 .chip = {
2300 .base = EXYNOS4_GPJ1(0),
2301 .ngpio = EXYNOS4_GPIO_J1_NR,
2302 .label = "GPJ1",
2303 },
2304 }, {
2305 .chip = {
2306 .base = EXYNOS4_GPK0(0),
2307 .ngpio = EXYNOS4_GPIO_K0_NR,
2308 .label = "GPK0",
2309 },
2310 }, {
2311 .chip = {
2312 .base = EXYNOS4_GPK1(0),
2313 .ngpio = EXYNOS4_GPIO_K1_NR,
2314 .label = "GPK1",
2315 },
2316 }, {
2317 .chip = {
2318 .base = EXYNOS4_GPK2(0),
2319 .ngpio = EXYNOS4_GPIO_K2_NR,
2320 .label = "GPK2",
2321 },
2322 }, {
2323 .chip = {
2324 .base = EXYNOS4_GPK3(0),
2325 .ngpio = EXYNOS4_GPIO_K3_NR,
2326 .label = "GPK3",
2327 },
2328 }, {
2329 .chip = {
2330 .base = EXYNOS4_GPL0(0),
2331 .ngpio = EXYNOS4_GPIO_L0_NR,
2332 .label = "GPL0",
2333 },
2334 }, {
2335 .chip = {
2336 .base = EXYNOS4_GPL1(0),
2337 .ngpio = EXYNOS4_GPIO_L1_NR,
2338 .label = "GPL1",
2339 },
2340 }, {
2341 .chip = {
2342 .base = EXYNOS4_GPL2(0),
2343 .ngpio = EXYNOS4_GPIO_L2_NR,
2344 .label = "GPL2",
2345 },
2346 }, {
2347 .config = &samsung_gpio_cfgs[8],
2348 .chip = {
2349 .base = EXYNOS4_GPY0(0),
2350 .ngpio = EXYNOS4_GPIO_Y0_NR,
2351 .label = "GPY0",
2352 },
2353 }, {
2354 .config = &samsung_gpio_cfgs[8],
2355 .chip = {
2356 .base = EXYNOS4_GPY1(0),
2357 .ngpio = EXYNOS4_GPIO_Y1_NR,
2358 .label = "GPY1",
2359 },
2360 }, {
2361 .config = &samsung_gpio_cfgs[8],
2362 .chip = {
2363 .base = EXYNOS4_GPY2(0),
2364 .ngpio = EXYNOS4_GPIO_Y2_NR,
2365 .label = "GPY2",
2366 },
2367 }, {
2368 .config = &samsung_gpio_cfgs[8],
2369 .chip = {
2370 .base = EXYNOS4_GPY3(0),
2371 .ngpio = EXYNOS4_GPIO_Y3_NR,
2372 .label = "GPY3",
2373 },
2374 }, {
2375 .config = &samsung_gpio_cfgs[8],
2376 .chip = {
2377 .base = EXYNOS4_GPY4(0),
2378 .ngpio = EXYNOS4_GPIO_Y4_NR,
2379 .label = "GPY4",
2380 },
2381 }, {
2382 .config = &samsung_gpio_cfgs[8],
2383 .chip = {
2384 .base = EXYNOS4_GPY5(0),
2385 .ngpio = EXYNOS4_GPIO_Y5_NR,
2386 .label = "GPY5",
2387 },
2388 }, {
2389 .config = &samsung_gpio_cfgs[8],
2390 .chip = {
2391 .base = EXYNOS4_GPY6(0),
2392 .ngpio = EXYNOS4_GPIO_Y6_NR,
2393 .label = "GPY6",
2394 },
2395 }, {
2396 .config = &samsung_gpio_cfgs[9],
2397 .irq_base = IRQ_EINT(0),
2398 .chip = {
2399 .base = EXYNOS4_GPX0(0),
2400 .ngpio = EXYNOS4_GPIO_X0_NR,
2401 .label = "GPX0",
2402 .to_irq = samsung_gpiolib_to_irq,
2403 },
2404 }, {
2405 .config = &samsung_gpio_cfgs[9],
2406 .irq_base = IRQ_EINT(8),
2407 .chip = {
2408 .base = EXYNOS4_GPX1(0),
2409 .ngpio = EXYNOS4_GPIO_X1_NR,
2410 .label = "GPX1",
2411 .to_irq = samsung_gpiolib_to_irq,
2412 },
2413 }, {
2414 .config = &samsung_gpio_cfgs[9],
2415 .irq_base = IRQ_EINT(16),
2416 .chip = {
2417 .base = EXYNOS4_GPX2(0),
2418 .ngpio = EXYNOS4_GPIO_X2_NR,
2419 .label = "GPX2",
2420 .to_irq = samsung_gpiolib_to_irq,
2421 },
2422 }, {
2423 .config = &samsung_gpio_cfgs[9],
2424 .irq_base = IRQ_EINT(24),
2425 .chip = {
2426 .base = EXYNOS4_GPX3(0),
2427 .ngpio = EXYNOS4_GPIO_X3_NR,
2428 .label = "GPX3",
2429 .to_irq = samsung_gpiolib_to_irq,
2430 },
2431 },
2432 };
2433 #endif
2434
2435 #ifdef CONFIG_ARCH_EXYNOS4
2436 static struct samsung_gpio_chip exynos4_gpios_3[] = {
2437 {
2438 .chip = {
2439 .base = EXYNOS4_GPZ(0),
2440 .ngpio = EXYNOS4_GPIO_Z_NR,
2441 .label = "GPZ",
2442 },
2443 },
2444 };
2445 #endif
2446
2447 #ifdef CONFIG_SOC_EXYNOS5250
2448 static struct samsung_gpio_chip exynos5_gpios_1[] = {
2449 {
2450 .chip = {
2451 .base = EXYNOS5_GPA0(0),
2452 .ngpio = EXYNOS5_GPIO_A0_NR,
2453 .label = "GPA0",
2454 },
2455 }, {
2456 .chip = {
2457 .base = EXYNOS5_GPA1(0),
2458 .ngpio = EXYNOS5_GPIO_A1_NR,
2459 .label = "GPA1",
2460 },
2461 }, {
2462 .chip = {
2463 .base = EXYNOS5_GPA2(0),
2464 .ngpio = EXYNOS5_GPIO_A2_NR,
2465 .label = "GPA2",
2466 },
2467 }, {
2468 .chip = {
2469 .base = EXYNOS5_GPB0(0),
2470 .ngpio = EXYNOS5_GPIO_B0_NR,
2471 .label = "GPB0",
2472 },
2473 }, {
2474 .chip = {
2475 .base = EXYNOS5_GPB1(0),
2476 .ngpio = EXYNOS5_GPIO_B1_NR,
2477 .label = "GPB1",
2478 },
2479 }, {
2480 .chip = {
2481 .base = EXYNOS5_GPB2(0),
2482 .ngpio = EXYNOS5_GPIO_B2_NR,
2483 .label = "GPB2",
2484 },
2485 }, {
2486 .chip = {
2487 .base = EXYNOS5_GPB3(0),
2488 .ngpio = EXYNOS5_GPIO_B3_NR,
2489 .label = "GPB3",
2490 },
2491 }, {
2492 .chip = {
2493 .base = EXYNOS5_GPC0(0),
2494 .ngpio = EXYNOS5_GPIO_C0_NR,
2495 .label = "GPC0",
2496 },
2497 }, {
2498 .chip = {
2499 .base = EXYNOS5_GPC1(0),
2500 .ngpio = EXYNOS5_GPIO_C1_NR,
2501 .label = "GPC1",
2502 },
2503 }, {
2504 .chip = {
2505 .base = EXYNOS5_GPC2(0),
2506 .ngpio = EXYNOS5_GPIO_C2_NR,
2507 .label = "GPC2",
2508 },
2509 }, {
2510 .chip = {
2511 .base = EXYNOS5_GPC3(0),
2512 .ngpio = EXYNOS5_GPIO_C3_NR,
2513 .label = "GPC3",
2514 },
2515 }, {
2516 .chip = {
2517 .base = EXYNOS5_GPD0(0),
2518 .ngpio = EXYNOS5_GPIO_D0_NR,
2519 .label = "GPD0",
2520 },
2521 }, {
2522 .chip = {
2523 .base = EXYNOS5_GPD1(0),
2524 .ngpio = EXYNOS5_GPIO_D1_NR,
2525 .label = "GPD1",
2526 },
2527 }, {
2528 .chip = {
2529 .base = EXYNOS5_GPY0(0),
2530 .ngpio = EXYNOS5_GPIO_Y0_NR,
2531 .label = "GPY0",
2532 },
2533 }, {
2534 .chip = {
2535 .base = EXYNOS5_GPY1(0),
2536 .ngpio = EXYNOS5_GPIO_Y1_NR,
2537 .label = "GPY1",
2538 },
2539 }, {
2540 .chip = {
2541 .base = EXYNOS5_GPY2(0),
2542 .ngpio = EXYNOS5_GPIO_Y2_NR,
2543 .label = "GPY2",
2544 },
2545 }, {
2546 .chip = {
2547 .base = EXYNOS5_GPY3(0),
2548 .ngpio = EXYNOS5_GPIO_Y3_NR,
2549 .label = "GPY3",
2550 },
2551 }, {
2552 .chip = {
2553 .base = EXYNOS5_GPY4(0),
2554 .ngpio = EXYNOS5_GPIO_Y4_NR,
2555 .label = "GPY4",
2556 },
2557 }, {
2558 .chip = {
2559 .base = EXYNOS5_GPY5(0),
2560 .ngpio = EXYNOS5_GPIO_Y5_NR,
2561 .label = "GPY5",
2562 },
2563 }, {
2564 .chip = {
2565 .base = EXYNOS5_GPY6(0),
2566 .ngpio = EXYNOS5_GPIO_Y6_NR,
2567 .label = "GPY6",
2568 },
2569 }, {
2570 .chip = {
2571 .base = EXYNOS5_GPC4(0),
2572 .ngpio = EXYNOS5_GPIO_C4_NR,
2573 .label = "GPC4",
2574 },
2575 }, {
2576 .config = &samsung_gpio_cfgs[9],
2577 .irq_base = IRQ_EINT(0),
2578 .chip = {
2579 .base = EXYNOS5_GPX0(0),
2580 .ngpio = EXYNOS5_GPIO_X0_NR,
2581 .label = "GPX0",
2582 .to_irq = samsung_gpiolib_to_irq,
2583 },
2584 }, {
2585 .config = &samsung_gpio_cfgs[9],
2586 .irq_base = IRQ_EINT(8),
2587 .chip = {
2588 .base = EXYNOS5_GPX1(0),
2589 .ngpio = EXYNOS5_GPIO_X1_NR,
2590 .label = "GPX1",
2591 .to_irq = samsung_gpiolib_to_irq,
2592 },
2593 }, {
2594 .config = &samsung_gpio_cfgs[9],
2595 .irq_base = IRQ_EINT(16),
2596 .chip = {
2597 .base = EXYNOS5_GPX2(0),
2598 .ngpio = EXYNOS5_GPIO_X2_NR,
2599 .label = "GPX2",
2600 .to_irq = samsung_gpiolib_to_irq,
2601 },
2602 }, {
2603 .config = &samsung_gpio_cfgs[9],
2604 .irq_base = IRQ_EINT(24),
2605 .chip = {
2606 .base = EXYNOS5_GPX3(0),
2607 .ngpio = EXYNOS5_GPIO_X3_NR,
2608 .label = "GPX3",
2609 .to_irq = samsung_gpiolib_to_irq,
2610 },
2611 },
2612 };
2613 #endif
2614
2615 #ifdef CONFIG_SOC_EXYNOS5250
2616 static struct samsung_gpio_chip exynos5_gpios_2[] = {
2617 {
2618 .chip = {
2619 .base = EXYNOS5_GPE0(0),
2620 .ngpio = EXYNOS5_GPIO_E0_NR,
2621 .label = "GPE0",
2622 },
2623 }, {
2624 .chip = {
2625 .base = EXYNOS5_GPE1(0),
2626 .ngpio = EXYNOS5_GPIO_E1_NR,
2627 .label = "GPE1",
2628 },
2629 }, {
2630 .chip = {
2631 .base = EXYNOS5_GPF0(0),
2632 .ngpio = EXYNOS5_GPIO_F0_NR,
2633 .label = "GPF0",
2634 },
2635 }, {
2636 .chip = {
2637 .base = EXYNOS5_GPF1(0),
2638 .ngpio = EXYNOS5_GPIO_F1_NR,
2639 .label = "GPF1",
2640 },
2641 }, {
2642 .chip = {
2643 .base = EXYNOS5_GPG0(0),
2644 .ngpio = EXYNOS5_GPIO_G0_NR,
2645 .label = "GPG0",
2646 },
2647 }, {
2648 .chip = {
2649 .base = EXYNOS5_GPG1(0),
2650 .ngpio = EXYNOS5_GPIO_G1_NR,
2651 .label = "GPG1",
2652 },
2653 }, {
2654 .chip = {
2655 .base = EXYNOS5_GPG2(0),
2656 .ngpio = EXYNOS5_GPIO_G2_NR,
2657 .label = "GPG2",
2658 },
2659 }, {
2660 .chip = {
2661 .base = EXYNOS5_GPH0(0),
2662 .ngpio = EXYNOS5_GPIO_H0_NR,
2663 .label = "GPH0",
2664 },
2665 }, {
2666 .chip = {
2667 .base = EXYNOS5_GPH1(0),
2668 .ngpio = EXYNOS5_GPIO_H1_NR,
2669 .label = "GPH1",
2670
2671 },
2672 },
2673 };
2674 #endif
2675
2676 #ifdef CONFIG_SOC_EXYNOS5250
2677 static struct samsung_gpio_chip exynos5_gpios_3[] = {
2678 {
2679 .chip = {
2680 .base = EXYNOS5_GPV0(0),
2681 .ngpio = EXYNOS5_GPIO_V0_NR,
2682 .label = "GPV0",
2683 },
2684 }, {
2685 .chip = {
2686 .base = EXYNOS5_GPV1(0),
2687 .ngpio = EXYNOS5_GPIO_V1_NR,
2688 .label = "GPV1",
2689 },
2690 }, {
2691 .chip = {
2692 .base = EXYNOS5_GPV2(0),
2693 .ngpio = EXYNOS5_GPIO_V2_NR,
2694 .label = "GPV2",
2695 },
2696 }, {
2697 .chip = {
2698 .base = EXYNOS5_GPV3(0),
2699 .ngpio = EXYNOS5_GPIO_V3_NR,
2700 .label = "GPV3",
2701 },
2702 }, {
2703 .chip = {
2704 .base = EXYNOS5_GPV4(0),
2705 .ngpio = EXYNOS5_GPIO_V4_NR,
2706 .label = "GPV4",
2707 },
2708 },
2709 };
2710 #endif
2711
2712 #ifdef CONFIG_SOC_EXYNOS5250
2713 static struct samsung_gpio_chip exynos5_gpios_4[] = {
2714 {
2715 .chip = {
2716 .base = EXYNOS5_GPZ(0),
2717 .ngpio = EXYNOS5_GPIO_Z_NR,
2718 .label = "GPZ",
2719 },
2720 },
2721 };
2722 #endif
2723
2724
2725 #if defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF)
2726 static int exynos_gpio_xlate(struct gpio_chip *gc,
2727 const struct of_phandle_args *gpiospec, u32 *flags)
2728 {
2729 unsigned int pin;
2730
2731 if (WARN_ON(gc->of_gpio_n_cells < 4))
2732 return -EINVAL;
2733
2734 if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
2735 return -EINVAL;
2736
2737 if (gpiospec->args[0] > gc->ngpio)
2738 return -EINVAL;
2739
2740 pin = gc->base + gpiospec->args[0];
2741
2742 if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
2743 pr_warn("gpio_xlate: failed to set pin function\n");
2744 if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
2745 pr_warn("gpio_xlate: failed to set pin pull up/down\n");
2746 if (s5p_gpio_set_drvstr(pin, gpiospec->args[3]))
2747 pr_warn("gpio_xlate: failed to set pin drive strength\n");
2748
2749 if (flags)
2750 *flags = gpiospec->args[2] >> 16;
2751
2752 return gpiospec->args[0];
2753 }
2754
2755 static const struct of_device_id exynos_gpio_dt_match[] __initdata = {
2756 { .compatible = "samsung,exynos4-gpio", },
2757 {}
2758 };
2759
2760 static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
2761 u64 base, u64 offset)
2762 {
2763 struct gpio_chip *gc = &chip->chip;
2764 u64 address;
2765
2766 if (!of_have_populated_dt())
2767 return;
2768
2769 address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
2770 gc->of_node = of_find_matching_node_by_address(NULL,
2771 exynos_gpio_dt_match, address);
2772 if (!gc->of_node) {
2773 pr_info("gpio: device tree node not found for gpio controller"
2774 " with base address %08llx\n", address);
2775 return;
2776 }
2777 gc->of_gpio_n_cells = 4;
2778 gc->of_xlate = exynos_gpio_xlate;
2779 }
2780 #elif defined(CONFIG_ARCH_EXYNOS)
2781 static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
2782 u64 base, u64 offset)
2783 {
2784 return;
2785 }
2786 #endif /* defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF) */
2787
2788 static __init void exynos4_gpiolib_init(void)
2789 {
2790 #ifdef CONFIG_CPU_EXYNOS4210
2791 struct samsung_gpio_chip *chip;
2792 int i, nr_chips;
2793 void __iomem *gpio_base1, *gpio_base2, *gpio_base3;
2794 int group = 0;
2795 void __iomem *gpx_base;
2796
2797 /* gpio part1 */
2798 gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K);
2799 if (gpio_base1 == NULL) {
2800 pr_err("unable to ioremap for gpio_base1\n");
2801 goto err_ioremap1;
2802 }
2803
2804 chip = exynos4_gpios_1;
2805 nr_chips = ARRAY_SIZE(exynos4_gpios_1);
2806
2807 for (i = 0; i < nr_chips; i++, chip++) {
2808 if (!chip->config) {
2809 chip->config = &exynos_gpio_cfg;
2810 chip->group = group++;
2811 }
2812 exynos_gpiolib_attach_ofnode(chip,
2813 EXYNOS4_PA_GPIO1, i * 0x20);
2814 }
2815 samsung_gpiolib_add_4bit_chips(exynos4_gpios_1,
2816 nr_chips, gpio_base1);
2817
2818 /* gpio part2 */
2819 gpio_base2 = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
2820 if (gpio_base2 == NULL) {
2821 pr_err("unable to ioremap for gpio_base2\n");
2822 goto err_ioremap2;
2823 }
2824
2825 /* need to set base address for gpx */
2826 chip = &exynos4_gpios_2[16];
2827 gpx_base = gpio_base2 + 0xC00;
2828 for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
2829 chip->base = gpx_base;
2830
2831 chip = exynos4_gpios_2;
2832 nr_chips = ARRAY_SIZE(exynos4_gpios_2);
2833
2834 for (i = 0; i < nr_chips; i++, chip++) {
2835 if (!chip->config) {
2836 chip->config = &exynos_gpio_cfg;
2837 chip->group = group++;
2838 }
2839 exynos_gpiolib_attach_ofnode(chip,
2840 EXYNOS4_PA_GPIO2, i * 0x20);
2841 }
2842 samsung_gpiolib_add_4bit_chips(exynos4_gpios_2,
2843 nr_chips, gpio_base2);
2844
2845 /* gpio part3 */
2846 gpio_base3 = ioremap(EXYNOS4_PA_GPIO3, SZ_256);
2847 if (gpio_base3 == NULL) {
2848 pr_err("unable to ioremap for gpio_base3\n");
2849 goto err_ioremap3;
2850 }
2851
2852 chip = exynos4_gpios_3;
2853 nr_chips = ARRAY_SIZE(exynos4_gpios_3);
2854
2855 for (i = 0; i < nr_chips; i++, chip++) {
2856 if (!chip->config) {
2857 chip->config = &exynos_gpio_cfg;
2858 chip->group = group++;
2859 }
2860 exynos_gpiolib_attach_ofnode(chip,
2861 EXYNOS4_PA_GPIO3, i * 0x20);
2862 }
2863 samsung_gpiolib_add_4bit_chips(exynos4_gpios_3,
2864 nr_chips, gpio_base3);
2865
2866 #if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
2867 s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
2868 s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
2869 #endif
2870
2871 return;
2872
2873 err_ioremap3:
2874 iounmap(gpio_base2);
2875 err_ioremap2:
2876 iounmap(gpio_base1);
2877 err_ioremap1:
2878 return;
2879 #endif /* CONFIG_CPU_EXYNOS4210 */
2880 }
2881
2882 static __init void exynos5_gpiolib_init(void)
2883 {
2884 #ifdef CONFIG_SOC_EXYNOS5250
2885 struct samsung_gpio_chip *chip;
2886 int i, nr_chips;
2887 void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4;
2888 int group = 0;
2889 void __iomem *gpx_base;
2890
2891 /* gpio part1 */
2892 gpio_base1 = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
2893 if (gpio_base1 == NULL) {
2894 pr_err("unable to ioremap for gpio_base1\n");
2895 goto err_ioremap1;
2896 }
2897
2898 /* need to set base address for gpc4 */
2899 exynos5_gpios_1[20].base = gpio_base1 + 0x2E0;
2900
2901 /* need to set base address for gpx */
2902 chip = &exynos5_gpios_1[21];
2903 gpx_base = gpio_base1 + 0xC00;
2904 for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
2905 chip->base = gpx_base;
2906
2907 chip = exynos5_gpios_1;
2908 nr_chips = ARRAY_SIZE(exynos5_gpios_1);
2909
2910 for (i = 0; i < nr_chips; i++, chip++) {
2911 if (!chip->config) {
2912 chip->config = &exynos_gpio_cfg;
2913 chip->group = group++;
2914 }
2915 exynos_gpiolib_attach_ofnode(chip,
2916 EXYNOS5_PA_GPIO1, i * 0x20);
2917 }
2918 samsung_gpiolib_add_4bit_chips(exynos5_gpios_1,
2919 nr_chips, gpio_base1);
2920
2921 /* gpio part2 */
2922 gpio_base2 = ioremap(EXYNOS5_PA_GPIO2, SZ_4K);
2923 if (gpio_base2 == NULL) {
2924 pr_err("unable to ioremap for gpio_base2\n");
2925 goto err_ioremap2;
2926 }
2927
2928 chip = exynos5_gpios_2;
2929 nr_chips = ARRAY_SIZE(exynos5_gpios_2);
2930
2931 for (i = 0; i < nr_chips; i++, chip++) {
2932 if (!chip->config) {
2933 chip->config = &exynos_gpio_cfg;
2934 chip->group = group++;
2935 }
2936 exynos_gpiolib_attach_ofnode(chip,
2937 EXYNOS5_PA_GPIO2, i * 0x20);
2938 }
2939 samsung_gpiolib_add_4bit_chips(exynos5_gpios_2,
2940 nr_chips, gpio_base2);
2941
2942 /* gpio part3 */
2943 gpio_base3 = ioremap(EXYNOS5_PA_GPIO3, SZ_4K);
2944 if (gpio_base3 == NULL) {
2945 pr_err("unable to ioremap for gpio_base3\n");
2946 goto err_ioremap3;
2947 }
2948
2949 /* need to set base address for gpv */
2950 exynos5_gpios_3[0].base = gpio_base3;
2951 exynos5_gpios_3[1].base = gpio_base3 + 0x20;
2952 exynos5_gpios_3[2].base = gpio_base3 + 0x60;
2953 exynos5_gpios_3[3].base = gpio_base3 + 0x80;
2954 exynos5_gpios_3[4].base = gpio_base3 + 0xC0;
2955
2956 chip = exynos5_gpios_3;
2957 nr_chips = ARRAY_SIZE(exynos5_gpios_3);
2958
2959 for (i = 0; i < nr_chips; i++, chip++) {
2960 if (!chip->config) {
2961 chip->config = &exynos_gpio_cfg;
2962 chip->group = group++;
2963 }
2964 exynos_gpiolib_attach_ofnode(chip,
2965 EXYNOS5_PA_GPIO3, i * 0x20);
2966 }
2967 samsung_gpiolib_add_4bit_chips(exynos5_gpios_3,
2968 nr_chips, gpio_base3);
2969
2970 /* gpio part4 */
2971 gpio_base4 = ioremap(EXYNOS5_PA_GPIO4, SZ_4K);
2972 if (gpio_base4 == NULL) {
2973 pr_err("unable to ioremap for gpio_base4\n");
2974 goto err_ioremap4;
2975 }
2976
2977 chip = exynos5_gpios_4;
2978 nr_chips = ARRAY_SIZE(exynos5_gpios_4);
2979
2980 for (i = 0; i < nr_chips; i++, chip++) {
2981 if (!chip->config) {
2982 chip->config = &exynos_gpio_cfg;
2983 chip->group = group++;
2984 }
2985 exynos_gpiolib_attach_ofnode(chip,
2986 EXYNOS5_PA_GPIO4, i * 0x20);
2987 }
2988 samsung_gpiolib_add_4bit_chips(exynos5_gpios_4,
2989 nr_chips, gpio_base4);
2990 return;
2991
2992 err_ioremap4:
2993 iounmap(gpio_base3);
2994 err_ioremap3:
2995 iounmap(gpio_base2);
2996 err_ioremap2:
2997 iounmap(gpio_base1);
2998 err_ioremap1:
2999 return;
3000
3001 #endif /* CONFIG_SOC_EXYNOS5250 */
3002 }
3003
3004 /* TODO: cleanup soc_is_* */
3005 static __init int samsung_gpiolib_init(void)
3006 {
3007 struct samsung_gpio_chip *chip;
3008 int i, nr_chips;
3009 int group = 0;
3010
3011 #if defined(CONFIG_PINCTRL_EXYNOS) || defined(CONFIG_PINCTRL_EXYNOS5440)
3012 /*
3013 * This gpio driver includes support for device tree support and there
3014 * are platforms using it. In order to maintain compatibility with those
3015 * platforms, and to allow non-dt Exynos4210 platforms to use this
3016 * gpiolib support, a check is added to find out if there is a active
3017 * pin-controller driver support available. If it is available, this
3018 * gpiolib support is ignored and the gpiolib support available in
3019 * pin-controller driver is used. This is a temporary check and will go
3020 * away when all of the Exynos4210 platforms have switched to using
3021 * device tree and the pin-ctrl driver.
3022 */
3023 struct device_node *pctrl_np;
3024 static const struct of_device_id exynos_pinctrl_ids[] = {
3025 { .compatible = "samsung,exynos4210-pinctrl", },
3026 { .compatible = "samsung,exynos4x12-pinctrl", },
3027 { .compatible = "samsung,exynos5440-pinctrl", },
3028 };
3029 for_each_matching_node(pctrl_np, exynos_pinctrl_ids)
3030 if (pctrl_np && of_device_is_available(pctrl_np))
3031 return -ENODEV;
3032 #endif
3033
3034 samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs));
3035
3036 if (soc_is_s3c24xx()) {
3037 s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
3038 ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
3039 } else if (soc_is_s3c64xx()) {
3040 samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
3041 ARRAY_SIZE(s3c64xx_gpios_2bit),
3042 S3C64XX_VA_GPIO + 0xE0, 0x20);
3043 samsung_gpiolib_add_4bit_chips(s3c64xx_gpios_4bit,
3044 ARRAY_SIZE(s3c64xx_gpios_4bit),
3045 S3C64XX_VA_GPIO);
3046 samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2,
3047 ARRAY_SIZE(s3c64xx_gpios_4bit2));
3048 } else if (soc_is_s5p6440()) {
3049 samsung_gpiolib_add_2bit_chips(s5p6440_gpios_2bit,
3050 ARRAY_SIZE(s5p6440_gpios_2bit), NULL, 0x0);
3051 samsung_gpiolib_add_4bit_chips(s5p6440_gpios_4bit,
3052 ARRAY_SIZE(s5p6440_gpios_4bit), S5P_VA_GPIO);
3053 samsung_gpiolib_add_4bit2_chips(s5p6440_gpios_4bit2,
3054 ARRAY_SIZE(s5p6440_gpios_4bit2));
3055 s5p64x0_gpiolib_add_rbank(s5p6440_gpios_rbank,
3056 ARRAY_SIZE(s5p6440_gpios_rbank));
3057 } else if (soc_is_s5p6450()) {
3058 samsung_gpiolib_add_2bit_chips(s5p6450_gpios_2bit,
3059 ARRAY_SIZE(s5p6450_gpios_2bit), NULL, 0x0);
3060 samsung_gpiolib_add_4bit_chips(s5p6450_gpios_4bit,
3061 ARRAY_SIZE(s5p6450_gpios_4bit), S5P_VA_GPIO);
3062 samsung_gpiolib_add_4bit2_chips(s5p6450_gpios_4bit2,
3063 ARRAY_SIZE(s5p6450_gpios_4bit2));
3064 s5p64x0_gpiolib_add_rbank(s5p6450_gpios_rbank,
3065 ARRAY_SIZE(s5p6450_gpios_rbank));
3066 } else if (soc_is_s5pc100()) {
3067 group = 0;
3068 chip = s5pc100_gpios_4bit;
3069 nr_chips = ARRAY_SIZE(s5pc100_gpios_4bit);
3070
3071 for (i = 0; i < nr_chips; i++, chip++) {
3072 if (!chip->config) {
3073 chip->config = &samsung_gpio_cfgs[3];
3074 chip->group = group++;
3075 }
3076 }
3077 samsung_gpiolib_add_4bit_chips(s5pc100_gpios_4bit, nr_chips, S5P_VA_GPIO);
3078 #if defined(CONFIG_CPU_S5PC100) && defined(CONFIG_S5P_GPIO_INT)
3079 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
3080 #endif
3081 } else if (soc_is_s5pv210()) {
3082 group = 0;
3083 chip = s5pv210_gpios_4bit;
3084 nr_chips = ARRAY_SIZE(s5pv210_gpios_4bit);
3085
3086 for (i = 0; i < nr_chips; i++, chip++) {
3087 if (!chip->config) {
3088 chip->config = &samsung_gpio_cfgs[3];
3089 chip->group = group++;
3090 }
3091 }
3092 samsung_gpiolib_add_4bit_chips(s5pv210_gpios_4bit, nr_chips, S5P_VA_GPIO);
3093 #if defined(CONFIG_CPU_S5PV210) && defined(CONFIG_S5P_GPIO_INT)
3094 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
3095 #endif
3096 } else if (soc_is_exynos4210()) {
3097 exynos4_gpiolib_init();
3098 } else if (soc_is_exynos5250()) {
3099 exynos5_gpiolib_init();
3100 } else {
3101 WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
3102 return -ENODEV;
3103 }
3104
3105 return 0;
3106 }
3107 core_initcall(samsung_gpiolib_init);
3108
3109 int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
3110 {
3111 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3112 unsigned long flags;
3113 int offset;
3114 int ret;
3115
3116 if (!chip)
3117 return -EINVAL;
3118
3119 offset = pin - chip->chip.base;
3120
3121 samsung_gpio_lock(chip, flags);
3122 ret = samsung_gpio_do_setcfg(chip, offset, config);
3123 samsung_gpio_unlock(chip, flags);
3124
3125 return ret;
3126 }
3127 EXPORT_SYMBOL(s3c_gpio_cfgpin);
3128
3129 int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
3130 unsigned int cfg)
3131 {
3132 int ret;
3133
3134 for (; nr > 0; nr--, start++) {
3135 ret = s3c_gpio_cfgpin(start, cfg);
3136 if (ret != 0)
3137 return ret;
3138 }
3139
3140 return 0;
3141 }
3142 EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
3143
3144 int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
3145 unsigned int cfg, samsung_gpio_pull_t pull)
3146 {
3147 int ret;
3148
3149 for (; nr > 0; nr--, start++) {
3150 s3c_gpio_setpull(start, pull);
3151 ret = s3c_gpio_cfgpin(start, cfg);
3152 if (ret != 0)
3153 return ret;
3154 }
3155
3156 return 0;
3157 }
3158 EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_range);
3159
3160 unsigned s3c_gpio_getcfg(unsigned int pin)
3161 {
3162 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3163 unsigned long flags;
3164 unsigned ret = 0;
3165 int offset;
3166
3167 if (chip) {
3168 offset = pin - chip->chip.base;
3169
3170 samsung_gpio_lock(chip, flags);
3171 ret = samsung_gpio_do_getcfg(chip, offset);
3172 samsung_gpio_unlock(chip, flags);
3173 }
3174
3175 return ret;
3176 }
3177 EXPORT_SYMBOL(s3c_gpio_getcfg);
3178
3179 int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull)
3180 {
3181 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3182 unsigned long flags;
3183 int offset, ret;
3184
3185 if (!chip)
3186 return -EINVAL;
3187
3188 offset = pin - chip->chip.base;
3189
3190 samsung_gpio_lock(chip, flags);
3191 ret = samsung_gpio_do_setpull(chip, offset, pull);
3192 samsung_gpio_unlock(chip, flags);
3193
3194 return ret;
3195 }
3196 EXPORT_SYMBOL(s3c_gpio_setpull);
3197
3198 samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
3199 {
3200 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3201 unsigned long flags;
3202 int offset;
3203 u32 pup = 0;
3204
3205 if (chip) {
3206 offset = pin - chip->chip.base;
3207
3208 samsung_gpio_lock(chip, flags);
3209 pup = samsung_gpio_do_getpull(chip, offset);
3210 samsung_gpio_unlock(chip, flags);
3211 }
3212
3213 return (__force samsung_gpio_pull_t)pup;
3214 }
3215 EXPORT_SYMBOL(s3c_gpio_getpull);
3216
3217 #ifdef CONFIG_S5P_GPIO_DRVSTR
3218 s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin)
3219 {
3220 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3221 unsigned int off;
3222 void __iomem *reg;
3223 int shift;
3224 u32 drvstr;
3225
3226 if (!chip)
3227 return -EINVAL;
3228
3229 off = pin - chip->chip.base;
3230 shift = off * 2;
3231 reg = chip->base + 0x0C;
3232
3233 drvstr = __raw_readl(reg);
3234 drvstr = drvstr >> shift;
3235 drvstr &= 0x3;
3236
3237 return (__force s5p_gpio_drvstr_t)drvstr;
3238 }
3239 EXPORT_SYMBOL(s5p_gpio_get_drvstr);
3240
3241 int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr)
3242 {
3243 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
3244 unsigned int off;
3245 void __iomem *reg;
3246 int shift;
3247 u32 tmp;
3248
3249 if (!chip)
3250 return -EINVAL;
3251
3252 off = pin - chip->chip.base;
3253 shift = off * 2;
3254 reg = chip->base + 0x0C;
3255
3256 tmp = __raw_readl(reg);
3257 tmp &= ~(0x3 << shift);
3258 tmp |= drvstr << shift;
3259
3260 __raw_writel(tmp, reg);
3261
3262 return 0;
3263 }
3264 EXPORT_SYMBOL(s5p_gpio_set_drvstr);
3265 #endif /* CONFIG_S5P_GPIO_DRVSTR */
3266
3267 #ifdef CONFIG_PLAT_S3C24XX
3268 unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
3269 {
3270 unsigned long flags;
3271 unsigned long misccr;
3272
3273 local_irq_save(flags);
3274 misccr = __raw_readl(S3C24XX_MISCCR);
3275 misccr &= ~clear;
3276 misccr ^= change;
3277 __raw_writel(misccr, S3C24XX_MISCCR);
3278 local_irq_restore(flags);
3279
3280 return misccr;
3281 }
3282 EXPORT_SYMBOL(s3c2410_modify_misccr);
3283 #endif
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