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13#include <linux/kernel.h>
14#include <linux/irq.h>
15#include <linux/io.h>
16#include <linux/gpio.h>
17#include <linux/init.h>
18#include <linux/spinlock.h>
19#include <linux/module.h>
20#include <linux/interrupt.h>
21#include <linux/device.h>
22#include <linux/ioport.h>
23#include <linux/of.h>
24#include <linux/slab.h>
25#include <linux/of_address.h>
26
27#include <asm/irq.h>
28
29#include <mach/irqs.h>
30#include "map.h"
31#include "regs-gpio.h"
32#include "gpio-samsung.h"
33
34#include "cpu.h"
35#include "gpio-core.h"
36#include "gpio-cfg.h"
37#include "gpio-cfg-helpers.h"
38#include "pm.h"
39
40int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
41 unsigned int off, samsung_gpio_pull_t pull)
42{
43 void __iomem *reg = chip->base + 0x08;
44 int shift = off * 2;
45 u32 pup;
46
47 pup = __raw_readl(reg);
48 pup &= ~(3 << shift);
49 pup |= pull << shift;
50 __raw_writel(pup, reg);
51
52 return 0;
53}
54
55samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
56 unsigned int off)
57{
58 void __iomem *reg = chip->base + 0x08;
59 int shift = off * 2;
60 u32 pup = __raw_readl(reg);
61
62 pup >>= shift;
63 pup &= 0x3;
64
65 return (__force samsung_gpio_pull_t)pup;
66}
67
68int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
69 unsigned int off, samsung_gpio_pull_t pull)
70{
71 switch (pull) {
72 case S3C_GPIO_PULL_NONE:
73 pull = 0x01;
74 break;
75 case S3C_GPIO_PULL_UP:
76 pull = 0x00;
77 break;
78 case S3C_GPIO_PULL_DOWN:
79 pull = 0x02;
80 break;
81 }
82 return samsung_gpio_setpull_updown(chip, off, pull);
83}
84
85samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
86 unsigned int off)
87{
88 samsung_gpio_pull_t pull;
89
90 pull = samsung_gpio_getpull_updown(chip, off);
91
92 switch (pull) {
93 case 0x00:
94 pull = S3C_GPIO_PULL_UP;
95 break;
96 case 0x01:
97 case 0x03:
98 pull = S3C_GPIO_PULL_NONE;
99 break;
100 case 0x02:
101 pull = S3C_GPIO_PULL_DOWN;
102 break;
103 }
104
105 return pull;
106}
107
108static int s3c24xx_gpio_setpull_1(struct samsung_gpio_chip *chip,
109 unsigned int off, samsung_gpio_pull_t pull,
110 samsung_gpio_pull_t updown)
111{
112 void __iomem *reg = chip->base + 0x08;
113 u32 pup = __raw_readl(reg);
114
115 if (pull == updown)
116 pup &= ~(1 << off);
117 else if (pull == S3C_GPIO_PULL_NONE)
118 pup |= (1 << off);
119 else
120 return -EINVAL;
121
122 __raw_writel(pup, reg);
123 return 0;
124}
125
126static samsung_gpio_pull_t s3c24xx_gpio_getpull_1(struct samsung_gpio_chip *chip,
127 unsigned int off,
128 samsung_gpio_pull_t updown)
129{
130 void __iomem *reg = chip->base + 0x08;
131 u32 pup = __raw_readl(reg);
132
133 pup &= (1 << off);
134 return pup ? S3C_GPIO_PULL_NONE : updown;
135}
136
137samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
138 unsigned int off)
139{
140 return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_UP);
141}
142
143int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
144 unsigned int off, samsung_gpio_pull_t pull)
145{
146 return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_UP);
147}
148
149samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
150 unsigned int off)
151{
152 return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_DOWN);
153}
154
155int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
156 unsigned int off, samsung_gpio_pull_t pull)
157{
158 return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN);
159}
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175static int samsung_gpio_setcfg_2bit(struct samsung_gpio_chip *chip,
176 unsigned int off, unsigned int cfg)
177{
178 void __iomem *reg = chip->base;
179 unsigned int shift = off * 2;
180 u32 con;
181
182 if (samsung_gpio_is_cfg_special(cfg)) {
183 cfg &= 0xf;
184 if (cfg > 3)
185 return -EINVAL;
186
187 cfg <<= shift;
188 }
189
190 con = __raw_readl(reg);
191 con &= ~(0x3 << shift);
192 con |= cfg;
193 __raw_writel(con, reg);
194
195 return 0;
196}
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208static unsigned int samsung_gpio_getcfg_2bit(struct samsung_gpio_chip *chip,
209 unsigned int off)
210{
211 u32 con;
212
213 con = __raw_readl(chip->base);
214 con >>= off * 2;
215 con &= 3;
216
217
218 return S3C_GPIO_SPECIAL(con);
219}
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238static int samsung_gpio_setcfg_4bit(struct samsung_gpio_chip *chip,
239 unsigned int off, unsigned int cfg)
240{
241 void __iomem *reg = chip->base;
242 unsigned int shift = (off & 7) * 4;
243 u32 con;
244
245 if (off < 8 && chip->chip.ngpio > 8)
246 reg -= 4;
247
248 if (samsung_gpio_is_cfg_special(cfg)) {
249 cfg &= 0xf;
250 cfg <<= shift;
251 }
252
253 con = __raw_readl(reg);
254 con &= ~(0xf << shift);
255 con |= cfg;
256 __raw_writel(con, reg);
257
258 return 0;
259}
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273static unsigned samsung_gpio_getcfg_4bit(struct samsung_gpio_chip *chip,
274 unsigned int off)
275{
276 void __iomem *reg = chip->base;
277 unsigned int shift = (off & 7) * 4;
278 u32 con;
279
280 if (off < 8 && chip->chip.ngpio > 8)
281 reg -= 4;
282
283 con = __raw_readl(reg);
284 con >>= shift;
285 con &= 0xf;
286
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288 return S3C_GPIO_SPECIAL(con);
289}
290
291#ifdef CONFIG_PLAT_S3C24XX
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303static int s3c24xx_gpio_setcfg_abank(struct samsung_gpio_chip *chip,
304 unsigned int off, unsigned int cfg)
305{
306 void __iomem *reg = chip->base;
307 unsigned int shift = off;
308 u32 con;
309
310 if (samsung_gpio_is_cfg_special(cfg)) {
311 cfg &= 0xf;
312
313
314 cfg -= 1;
315 if (cfg > 1)
316 return -EINVAL;
317
318 cfg <<= shift;
319 }
320
321 con = __raw_readl(reg);
322 con &= ~(0x1 << shift);
323 con |= cfg;
324 __raw_writel(con, reg);
325
326 return 0;
327}
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341static unsigned s3c24xx_gpio_getcfg_abank(struct samsung_gpio_chip *chip,
342 unsigned int off)
343{
344 u32 con;
345
346 con = __raw_readl(chip->base);
347 con >>= off;
348 con &= 1;
349 con++;
350
351 return S3C_GPIO_SFN(con);
352}
353#endif
354
355static void __init samsung_gpiolib_set_cfg(struct samsung_gpio_cfg *chipcfg,
356 int nr_chips)
357{
358 for (; nr_chips > 0; nr_chips--, chipcfg++) {
359 if (!chipcfg->set_config)
360 chipcfg->set_config = samsung_gpio_setcfg_4bit;
361 if (!chipcfg->get_config)
362 chipcfg->get_config = samsung_gpio_getcfg_4bit;
363 if (!chipcfg->set_pull)
364 chipcfg->set_pull = samsung_gpio_setpull_updown;
365 if (!chipcfg->get_pull)
366 chipcfg->get_pull = samsung_gpio_getpull_updown;
367 }
368}
369
370struct samsung_gpio_cfg s3c24xx_gpiocfg_default = {
371 .set_config = samsung_gpio_setcfg_2bit,
372 .get_config = samsung_gpio_getcfg_2bit,
373};
374
375#ifdef CONFIG_PLAT_S3C24XX
376static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = {
377 .set_config = s3c24xx_gpio_setcfg_abank,
378 .get_config = s3c24xx_gpio_getcfg_abank,
379};
380#endif
381
382static struct samsung_gpio_cfg samsung_gpio_cfgs[] = {
383 [0] = {
384 .cfg_eint = 0x0,
385 },
386 [1] = {
387 .cfg_eint = 0x3,
388 },
389 [2] = {
390 .cfg_eint = 0x7,
391 },
392 [3] = {
393 .cfg_eint = 0xF,
394 },
395 [4] = {
396 .cfg_eint = 0x0,
397 .set_config = samsung_gpio_setcfg_2bit,
398 .get_config = samsung_gpio_getcfg_2bit,
399 },
400 [5] = {
401 .cfg_eint = 0x2,
402 .set_config = samsung_gpio_setcfg_2bit,
403 .get_config = samsung_gpio_getcfg_2bit,
404 },
405 [6] = {
406 .cfg_eint = 0x3,
407 .set_config = samsung_gpio_setcfg_2bit,
408 .get_config = samsung_gpio_getcfg_2bit,
409 },
410 [7] = {
411 .set_config = samsung_gpio_setcfg_2bit,
412 .get_config = samsung_gpio_getcfg_2bit,
413 },
414};
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428static int samsung_gpiolib_2bit_input(struct gpio_chip *chip, unsigned offset)
429{
430 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
431 void __iomem *base = ourchip->base;
432 unsigned long flags;
433 unsigned long con;
434
435 samsung_gpio_lock(ourchip, flags);
436
437 con = __raw_readl(base + 0x00);
438 con &= ~(3 << (offset * 2));
439
440 __raw_writel(con, base + 0x00);
441
442 samsung_gpio_unlock(ourchip, flags);
443 return 0;
444}
445
446static int samsung_gpiolib_2bit_output(struct gpio_chip *chip,
447 unsigned offset, int value)
448{
449 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
450 void __iomem *base = ourchip->base;
451 unsigned long flags;
452 unsigned long dat;
453 unsigned long con;
454
455 samsung_gpio_lock(ourchip, flags);
456
457 dat = __raw_readl(base + 0x04);
458 dat &= ~(1 << offset);
459 if (value)
460 dat |= 1 << offset;
461 __raw_writel(dat, base + 0x04);
462
463 con = __raw_readl(base + 0x00);
464 con &= ~(3 << (offset * 2));
465 con |= 1 << (offset * 2);
466
467 __raw_writel(con, base + 0x00);
468 __raw_writel(dat, base + 0x04);
469
470 samsung_gpio_unlock(ourchip, flags);
471 return 0;
472}
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490static int samsung_gpiolib_4bit_input(struct gpio_chip *chip,
491 unsigned int offset)
492{
493 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
494 void __iomem *base = ourchip->base;
495 unsigned long con;
496
497 con = __raw_readl(base + GPIOCON_OFF);
498 if (ourchip->bitmap_gpio_int & BIT(offset))
499 con |= 0xf << con_4bit_shift(offset);
500 else
501 con &= ~(0xf << con_4bit_shift(offset));
502 __raw_writel(con, base + GPIOCON_OFF);
503
504 pr_debug("%s: %p: CON now %08lx\n", __func__, base, con);
505
506 return 0;
507}
508
509static int samsung_gpiolib_4bit_output(struct gpio_chip *chip,
510 unsigned int offset, int value)
511{
512 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
513 void __iomem *base = ourchip->base;
514 unsigned long con;
515 unsigned long dat;
516
517 con = __raw_readl(base + GPIOCON_OFF);
518 con &= ~(0xf << con_4bit_shift(offset));
519 con |= 0x1 << con_4bit_shift(offset);
520
521 dat = __raw_readl(base + GPIODAT_OFF);
522
523 if (value)
524 dat |= 1 << offset;
525 else
526 dat &= ~(1 << offset);
527
528 __raw_writel(dat, base + GPIODAT_OFF);
529 __raw_writel(con, base + GPIOCON_OFF);
530 __raw_writel(dat, base + GPIODAT_OFF);
531
532 pr_debug("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
533
534 return 0;
535}
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559static int samsung_gpiolib_4bit2_input(struct gpio_chip *chip,
560 unsigned int offset)
561{
562 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
563 void __iomem *base = ourchip->base;
564 void __iomem *regcon = base;
565 unsigned long con;
566
567 if (offset > 7)
568 offset -= 8;
569 else
570 regcon -= 4;
571
572 con = __raw_readl(regcon);
573 con &= ~(0xf << con_4bit_shift(offset));
574 __raw_writel(con, regcon);
575
576 pr_debug("%s: %p: CON %08lx\n", __func__, base, con);
577
578 return 0;
579}
580
581static int samsung_gpiolib_4bit2_output(struct gpio_chip *chip,
582 unsigned int offset, int value)
583{
584 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
585 void __iomem *base = ourchip->base;
586 void __iomem *regcon = base;
587 unsigned long con;
588 unsigned long dat;
589 unsigned con_offset = offset;
590
591 if (con_offset > 7)
592 con_offset -= 8;
593 else
594 regcon -= 4;
595
596 con = __raw_readl(regcon);
597 con &= ~(0xf << con_4bit_shift(con_offset));
598 con |= 0x1 << con_4bit_shift(con_offset);
599
600 dat = __raw_readl(base + GPIODAT_OFF);
601
602 if (value)
603 dat |= 1 << offset;
604 else
605 dat &= ~(1 << offset);
606
607 __raw_writel(dat, base + GPIODAT_OFF);
608 __raw_writel(con, regcon);
609 __raw_writel(dat, base + GPIODAT_OFF);
610
611 pr_debug("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
612
613 return 0;
614}
615
616#ifdef CONFIG_PLAT_S3C24XX
617
618
619static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset)
620{
621 return -EINVAL;
622}
623
624static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
625 unsigned offset, int value)
626{
627 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
628 void __iomem *base = ourchip->base;
629 unsigned long flags;
630 unsigned long dat;
631 unsigned long con;
632
633 local_irq_save(flags);
634
635 con = __raw_readl(base + 0x00);
636 dat = __raw_readl(base + 0x04);
637
638 dat &= ~(1 << offset);
639 if (value)
640 dat |= 1 << offset;
641
642 __raw_writel(dat, base + 0x04);
643
644 con &= ~(1 << offset);
645
646 __raw_writel(con, base + 0x00);
647 __raw_writel(dat, base + 0x04);
648
649 local_irq_restore(flags);
650 return 0;
651}
652#endif
653
654static void samsung_gpiolib_set(struct gpio_chip *chip,
655 unsigned offset, int value)
656{
657 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
658 void __iomem *base = ourchip->base;
659 unsigned long flags;
660 unsigned long dat;
661
662 samsung_gpio_lock(ourchip, flags);
663
664 dat = __raw_readl(base + 0x04);
665 dat &= ~(1 << offset);
666 if (value)
667 dat |= 1 << offset;
668 __raw_writel(dat, base + 0x04);
669
670 samsung_gpio_unlock(ourchip, flags);
671}
672
673static int samsung_gpiolib_get(struct gpio_chip *chip, unsigned offset)
674{
675 struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip);
676 unsigned long val;
677
678 val = __raw_readl(ourchip->base + 0x04);
679 val >>= offset;
680 val &= 1;
681
682 return val;
683}
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697#ifdef CONFIG_S3C_GPIO_TRACK
698struct samsung_gpio_chip *s3c_gpios[S3C_GPIO_END];
699
700static __init void s3c_gpiolib_track(struct samsung_gpio_chip *chip)
701{
702 unsigned int gpn;
703 int i;
704
705 gpn = chip->chip.base;
706 for (i = 0; i < chip->chip.ngpio; i++, gpn++) {
707 BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios));
708 s3c_gpios[gpn] = chip;
709 }
710}
711#endif
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723static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip)
724{
725 struct gpio_chip *gc = &chip->chip;
726 int ret;
727
728 BUG_ON(!chip->base);
729 BUG_ON(!gc->label);
730 BUG_ON(!gc->ngpio);
731
732 spin_lock_init(&chip->lock);
733
734 if (!gc->direction_input)
735 gc->direction_input = samsung_gpiolib_2bit_input;
736 if (!gc->direction_output)
737 gc->direction_output = samsung_gpiolib_2bit_output;
738 if (!gc->set)
739 gc->set = samsung_gpiolib_set;
740 if (!gc->get)
741 gc->get = samsung_gpiolib_get;
742
743#ifdef CONFIG_PM
744 if (chip->pm != NULL) {
745 if (!chip->pm->save || !chip->pm->resume)
746 pr_err("gpio: %s has missing PM functions\n",
747 gc->label);
748 } else
749 pr_err("gpio: %s has no PM function\n", gc->label);
750#endif
751
752
753 ret = gpiochip_add_data(gc, chip);
754 if (ret >= 0)
755 s3c_gpiolib_track(chip);
756}
757
758static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
759 int nr_chips, void __iomem *base)
760{
761 int i;
762 struct gpio_chip *gc = &chip->chip;
763
764 for (i = 0 ; i < nr_chips; i++, chip++) {
765
766 if (chip->chip.base >= S3C_GPIO_END)
767 continue;
768
769 if (!chip->config)
770 chip->config = &s3c24xx_gpiocfg_default;
771 if (!chip->pm)
772 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
773 if ((base != NULL) && (chip->base == NULL))
774 chip->base = base + ((i) * 0x10);
775
776 if (!gc->direction_input)
777 gc->direction_input = samsung_gpiolib_2bit_input;
778 if (!gc->direction_output)
779 gc->direction_output = samsung_gpiolib_2bit_output;
780
781 samsung_gpiolib_add(chip);
782 }
783}
784
785static void __init samsung_gpiolib_add_2bit_chips(struct samsung_gpio_chip *chip,
786 int nr_chips, void __iomem *base,
787 unsigned int offset)
788{
789 int i;
790
791 for (i = 0 ; i < nr_chips; i++, chip++) {
792 chip->chip.direction_input = samsung_gpiolib_2bit_input;
793 chip->chip.direction_output = samsung_gpiolib_2bit_output;
794
795 if (!chip->config)
796 chip->config = &samsung_gpio_cfgs[7];
797 if (!chip->pm)
798 chip->pm = __gpio_pm(&samsung_gpio_pm_2bit);
799 if ((base != NULL) && (chip->base == NULL))
800 chip->base = base + ((i) * offset);
801
802 samsung_gpiolib_add(chip);
803 }
804}
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822static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip,
823 int nr_chips, void __iomem *base)
824{
825 int i;
826
827 for (i = 0 ; i < nr_chips; i++, chip++) {
828 chip->chip.direction_input = samsung_gpiolib_4bit_input;
829 chip->chip.direction_output = samsung_gpiolib_4bit_output;
830
831 if (!chip->config)
832 chip->config = &samsung_gpio_cfgs[2];
833 if (!chip->pm)
834 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
835 if ((base != NULL) && (chip->base == NULL))
836 chip->base = base + ((i) * 0x20);
837
838 chip->bitmap_gpio_int = 0;
839
840 samsung_gpiolib_add(chip);
841 }
842}
843
844static void __init samsung_gpiolib_add_4bit2_chips(struct samsung_gpio_chip *chip,
845 int nr_chips)
846{
847 for (; nr_chips > 0; nr_chips--, chip++) {
848 chip->chip.direction_input = samsung_gpiolib_4bit2_input;
849 chip->chip.direction_output = samsung_gpiolib_4bit2_output;
850
851 if (!chip->config)
852 chip->config = &samsung_gpio_cfgs[2];
853 if (!chip->pm)
854 chip->pm = __gpio_pm(&samsung_gpio_pm_4bit);
855
856 samsung_gpiolib_add(chip);
857 }
858}
859
860int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
861{
862 struct samsung_gpio_chip *samsung_chip = gpiochip_get_data(chip);
863
864 return samsung_chip->irq_base + offset;
865}
866
867#ifdef CONFIG_PLAT_S3C24XX
868static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
869{
870 if (offset < 4) {
871 if (soc_is_s3c2412())
872 return IRQ_EINT0_2412 + offset;
873 else
874 return IRQ_EINT0 + offset;
875 }
876
877 if (offset < 8)
878 return IRQ_EINT4 + offset - 4;
879
880 return -EINVAL;
881}
882#endif
883
884#ifdef CONFIG_ARCH_S3C64XX
885static int s3c64xx_gpiolib_mbank_to_irq(struct gpio_chip *chip, unsigned pin)
886{
887 return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
888}
889
890static int s3c64xx_gpiolib_lbank_to_irq(struct gpio_chip *chip, unsigned pin)
891{
892 return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
893}
894#endif
895
896struct samsung_gpio_chip s3c24xx_gpios[] = {
897#ifdef CONFIG_PLAT_S3C24XX
898 {
899 .config = &s3c24xx_gpiocfg_banka,
900 .chip = {
901 .base = S3C2410_GPA(0),
902 .owner = THIS_MODULE,
903 .label = "GPIOA",
904 .ngpio = 27,
905 .direction_input = s3c24xx_gpiolib_banka_input,
906 .direction_output = s3c24xx_gpiolib_banka_output,
907 },
908 }, {
909 .chip = {
910 .base = S3C2410_GPB(0),
911 .owner = THIS_MODULE,
912 .label = "GPIOB",
913 .ngpio = 11,
914 },
915 }, {
916 .chip = {
917 .base = S3C2410_GPC(0),
918 .owner = THIS_MODULE,
919 .label = "GPIOC",
920 .ngpio = 16,
921 },
922 }, {
923 .chip = {
924 .base = S3C2410_GPD(0),
925 .owner = THIS_MODULE,
926 .label = "GPIOD",
927 .ngpio = 16,
928 },
929 }, {
930 .chip = {
931 .base = S3C2410_GPE(0),
932 .label = "GPIOE",
933 .owner = THIS_MODULE,
934 .ngpio = 16,
935 },
936 }, {
937 .chip = {
938 .base = S3C2410_GPF(0),
939 .owner = THIS_MODULE,
940 .label = "GPIOF",
941 .ngpio = 8,
942 .to_irq = s3c24xx_gpiolib_fbank_to_irq,
943 },
944 }, {
945 .irq_base = IRQ_EINT8,
946 .chip = {
947 .base = S3C2410_GPG(0),
948 .owner = THIS_MODULE,
949 .label = "GPIOG",
950 .ngpio = 16,
951 .to_irq = samsung_gpiolib_to_irq,
952 },
953 }, {
954 .chip = {
955 .base = S3C2410_GPH(0),
956 .owner = THIS_MODULE,
957 .label = "GPIOH",
958 .ngpio = 15,
959 },
960 },
961
962 {
963 .base = S3C2440_GPJCON,
964 .chip = {
965 .base = S3C2410_GPJ(0),
966 .owner = THIS_MODULE,
967 .label = "GPIOJ",
968 .ngpio = 16,
969 },
970 }, {
971 .base = S3C2443_GPKCON,
972 .chip = {
973 .base = S3C2410_GPK(0),
974 .owner = THIS_MODULE,
975 .label = "GPIOK",
976 .ngpio = 16,
977 },
978 }, {
979 .base = S3C2443_GPLCON,
980 .chip = {
981 .base = S3C2410_GPL(0),
982 .owner = THIS_MODULE,
983 .label = "GPIOL",
984 .ngpio = 15,
985 },
986 }, {
987 .base = S3C2443_GPMCON,
988 .chip = {
989 .base = S3C2410_GPM(0),
990 .owner = THIS_MODULE,
991 .label = "GPIOM",
992 .ngpio = 2,
993 },
994 },
995#endif
996};
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1023
1024static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = {
1025#ifdef CONFIG_ARCH_S3C64XX
1026 {
1027 .chip = {
1028 .base = S3C64XX_GPA(0),
1029 .ngpio = S3C64XX_GPIO_A_NR,
1030 .label = "GPA",
1031 },
1032 }, {
1033 .chip = {
1034 .base = S3C64XX_GPB(0),
1035 .ngpio = S3C64XX_GPIO_B_NR,
1036 .label = "GPB",
1037 },
1038 }, {
1039 .chip = {
1040 .base = S3C64XX_GPC(0),
1041 .ngpio = S3C64XX_GPIO_C_NR,
1042 .label = "GPC",
1043 },
1044 }, {
1045 .chip = {
1046 .base = S3C64XX_GPD(0),
1047 .ngpio = S3C64XX_GPIO_D_NR,
1048 .label = "GPD",
1049 },
1050 }, {
1051 .config = &samsung_gpio_cfgs[0],
1052 .chip = {
1053 .base = S3C64XX_GPE(0),
1054 .ngpio = S3C64XX_GPIO_E_NR,
1055 .label = "GPE",
1056 },
1057 }, {
1058 .base = S3C64XX_GPG_BASE,
1059 .chip = {
1060 .base = S3C64XX_GPG(0),
1061 .ngpio = S3C64XX_GPIO_G_NR,
1062 .label = "GPG",
1063 },
1064 }, {
1065 .base = S3C64XX_GPM_BASE,
1066 .config = &samsung_gpio_cfgs[1],
1067 .chip = {
1068 .base = S3C64XX_GPM(0),
1069 .ngpio = S3C64XX_GPIO_M_NR,
1070 .label = "GPM",
1071 .to_irq = s3c64xx_gpiolib_mbank_to_irq,
1072 },
1073 },
1074#endif
1075};
1076
1077static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = {
1078#ifdef CONFIG_ARCH_S3C64XX
1079 {
1080 .base = S3C64XX_GPH_BASE + 0x4,
1081 .chip = {
1082 .base = S3C64XX_GPH(0),
1083 .ngpio = S3C64XX_GPIO_H_NR,
1084 .label = "GPH",
1085 },
1086 }, {
1087 .base = S3C64XX_GPK_BASE + 0x4,
1088 .config = &samsung_gpio_cfgs[0],
1089 .chip = {
1090 .base = S3C64XX_GPK(0),
1091 .ngpio = S3C64XX_GPIO_K_NR,
1092 .label = "GPK",
1093 },
1094 }, {
1095 .base = S3C64XX_GPL_BASE + 0x4,
1096 .config = &samsung_gpio_cfgs[1],
1097 .chip = {
1098 .base = S3C64XX_GPL(0),
1099 .ngpio = S3C64XX_GPIO_L_NR,
1100 .label = "GPL",
1101 .to_irq = s3c64xx_gpiolib_lbank_to_irq,
1102 },
1103 },
1104#endif
1105};
1106
1107static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = {
1108#ifdef CONFIG_ARCH_S3C64XX
1109 {
1110 .base = S3C64XX_GPF_BASE,
1111 .config = &samsung_gpio_cfgs[6],
1112 .chip = {
1113 .base = S3C64XX_GPF(0),
1114 .ngpio = S3C64XX_GPIO_F_NR,
1115 .label = "GPF",
1116 },
1117 }, {
1118 .config = &samsung_gpio_cfgs[7],
1119 .chip = {
1120 .base = S3C64XX_GPI(0),
1121 .ngpio = S3C64XX_GPIO_I_NR,
1122 .label = "GPI",
1123 },
1124 }, {
1125 .config = &samsung_gpio_cfgs[7],
1126 .chip = {
1127 .base = S3C64XX_GPJ(0),
1128 .ngpio = S3C64XX_GPIO_J_NR,
1129 .label = "GPJ",
1130 },
1131 }, {
1132 .config = &samsung_gpio_cfgs[6],
1133 .chip = {
1134 .base = S3C64XX_GPO(0),
1135 .ngpio = S3C64XX_GPIO_O_NR,
1136 .label = "GPO",
1137 },
1138 }, {
1139 .config = &samsung_gpio_cfgs[6],
1140 .chip = {
1141 .base = S3C64XX_GPP(0),
1142 .ngpio = S3C64XX_GPIO_P_NR,
1143 .label = "GPP",
1144 },
1145 }, {
1146 .config = &samsung_gpio_cfgs[6],
1147 .chip = {
1148 .base = S3C64XX_GPQ(0),
1149 .ngpio = S3C64XX_GPIO_Q_NR,
1150 .label = "GPQ",
1151 },
1152 }, {
1153 .base = S3C64XX_GPN_BASE,
1154 .irq_base = IRQ_EINT(0),
1155 .config = &samsung_gpio_cfgs[5],
1156 .chip = {
1157 .base = S3C64XX_GPN(0),
1158 .ngpio = S3C64XX_GPIO_N_NR,
1159 .label = "GPN",
1160 .to_irq = samsung_gpiolib_to_irq,
1161 },
1162 },
1163#endif
1164};
1165
1166
1167static __init int samsung_gpiolib_init(void)
1168{
1169
1170
1171
1172
1173
1174
1175 if (of_have_populated_dt())
1176 return 0;
1177
1178 if (soc_is_s3c24xx()) {
1179 samsung_gpiolib_set_cfg(samsung_gpio_cfgs,
1180 ARRAY_SIZE(samsung_gpio_cfgs));
1181 s3c24xx_gpiolib_add_chips(s3c24xx_gpios,
1182 ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO);
1183 } else if (soc_is_s3c64xx()) {
1184 samsung_gpiolib_set_cfg(samsung_gpio_cfgs,
1185 ARRAY_SIZE(samsung_gpio_cfgs));
1186 samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit,
1187 ARRAY_SIZE(s3c64xx_gpios_2bit),
1188 S3C64XX_VA_GPIO + 0xE0, 0x20);
1189 samsung_gpiolib_add_4bit_chips(s3c64xx_gpios_4bit,
1190 ARRAY_SIZE(s3c64xx_gpios_4bit),
1191 S3C64XX_VA_GPIO);
1192 samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2,
1193 ARRAY_SIZE(s3c64xx_gpios_4bit2));
1194 }
1195
1196 return 0;
1197}
1198core_initcall(samsung_gpiolib_init);
1199
1200int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
1201{
1202 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
1203 unsigned long flags;
1204 int offset;
1205 int ret;
1206
1207 if (!chip)
1208 return -EINVAL;
1209
1210 offset = pin - chip->chip.base;
1211
1212 samsung_gpio_lock(chip, flags);
1213 ret = samsung_gpio_do_setcfg(chip, offset, config);
1214 samsung_gpio_unlock(chip, flags);
1215
1216 return ret;
1217}
1218EXPORT_SYMBOL(s3c_gpio_cfgpin);
1219
1220int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr,
1221 unsigned int cfg)
1222{
1223 int ret;
1224
1225 for (; nr > 0; nr--, start++) {
1226 ret = s3c_gpio_cfgpin(start, cfg);
1227 if (ret != 0)
1228 return ret;
1229 }
1230
1231 return 0;
1232}
1233EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range);
1234
1235int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr,
1236 unsigned int cfg, samsung_gpio_pull_t pull)
1237{
1238 int ret;
1239
1240 for (; nr > 0; nr--, start++) {
1241 s3c_gpio_setpull(start, pull);
1242 ret = s3c_gpio_cfgpin(start, cfg);
1243 if (ret != 0)
1244 return ret;
1245 }
1246
1247 return 0;
1248}
1249EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_range);
1250
1251unsigned s3c_gpio_getcfg(unsigned int pin)
1252{
1253 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
1254 unsigned long flags;
1255 unsigned ret = 0;
1256 int offset;
1257
1258 if (chip) {
1259 offset = pin - chip->chip.base;
1260
1261 samsung_gpio_lock(chip, flags);
1262 ret = samsung_gpio_do_getcfg(chip, offset);
1263 samsung_gpio_unlock(chip, flags);
1264 }
1265
1266 return ret;
1267}
1268EXPORT_SYMBOL(s3c_gpio_getcfg);
1269
1270int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull)
1271{
1272 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
1273 unsigned long flags;
1274 int offset, ret;
1275
1276 if (!chip)
1277 return -EINVAL;
1278
1279 offset = pin - chip->chip.base;
1280
1281 samsung_gpio_lock(chip, flags);
1282 ret = samsung_gpio_do_setpull(chip, offset, pull);
1283 samsung_gpio_unlock(chip, flags);
1284
1285 return ret;
1286}
1287EXPORT_SYMBOL(s3c_gpio_setpull);
1288
1289samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
1290{
1291 struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
1292 unsigned long flags;
1293 int offset;
1294 u32 pup = 0;
1295
1296 if (chip) {
1297 offset = pin - chip->chip.base;
1298
1299 samsung_gpio_lock(chip, flags);
1300 pup = samsung_gpio_do_getpull(chip, offset);
1301 samsung_gpio_unlock(chip, flags);
1302 }
1303
1304 return (__force samsung_gpio_pull_t)pup;
1305}
1306EXPORT_SYMBOL(s3c_gpio_getpull);
1307
1308#ifdef CONFIG_PLAT_S3C24XX
1309unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
1310{
1311 unsigned long flags;
1312 unsigned long misccr;
1313
1314 local_irq_save(flags);
1315 misccr = __raw_readl(S3C24XX_MISCCR);
1316 misccr &= ~clear;
1317 misccr ^= change;
1318 __raw_writel(misccr, S3C24XX_MISCCR);
1319 local_irq_restore(flags);
1320
1321 return misccr;
1322}
1323EXPORT_SYMBOL(s3c2410_modify_misccr);
1324#endif
1325