aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpio/gpio-pxa.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpio/gpio-pxa.c')
-rw-r--r--drivers/gpio/gpio-pxa.c151
1 files changed, 95 insertions, 56 deletions
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 2d3af981641e..d7a5c9d75525 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -85,20 +85,61 @@ struct pxa_gpio_chip {
85#endif 85#endif
86}; 86};
87 87
88enum { 88enum pxa_gpio_type {
89 PXA25X_GPIO = 0, 89 PXA25X_GPIO = 0,
90 PXA26X_GPIO, 90 PXA26X_GPIO,
91 PXA27X_GPIO, 91 PXA27X_GPIO,
92 PXA3XX_GPIO, 92 PXA3XX_GPIO,
93 PXA93X_GPIO, 93 PXA93X_GPIO,
94 MMP_GPIO = 0x10, 94 MMP_GPIO = 0x10,
95 MMP2_GPIO,
96};
97
98struct pxa_gpio_id {
99 enum pxa_gpio_type type;
100 int gpio_nums;
95}; 101};
96 102
97static DEFINE_SPINLOCK(gpio_lock); 103static DEFINE_SPINLOCK(gpio_lock);
98static struct pxa_gpio_chip *pxa_gpio_chips; 104static struct pxa_gpio_chip *pxa_gpio_chips;
99static int gpio_type; 105static enum pxa_gpio_type gpio_type;
100static void __iomem *gpio_reg_base; 106static void __iomem *gpio_reg_base;
101 107
108static struct pxa_gpio_id pxa25x_id = {
109 .type = PXA25X_GPIO,
110 .gpio_nums = 85,
111};
112
113static struct pxa_gpio_id pxa26x_id = {
114 .type = PXA26X_GPIO,
115 .gpio_nums = 90,
116};
117
118static struct pxa_gpio_id pxa27x_id = {
119 .type = PXA27X_GPIO,
120 .gpio_nums = 121,
121};
122
123static struct pxa_gpio_id pxa3xx_id = {
124 .type = PXA3XX_GPIO,
125 .gpio_nums = 128,
126};
127
128static struct pxa_gpio_id pxa93x_id = {
129 .type = PXA93X_GPIO,
130 .gpio_nums = 192,
131};
132
133static struct pxa_gpio_id mmp_id = {
134 .type = MMP_GPIO,
135 .gpio_nums = 128,
136};
137
138static struct pxa_gpio_id mmp2_id = {
139 .type = MMP2_GPIO,
140 .gpio_nums = 192,
141};
142
102#define for_each_gpio_chip(i, c) \ 143#define for_each_gpio_chip(i, c) \
103 for (i = 0, c = &pxa_gpio_chips[0]; i <= pxa_last_gpio; i += 32, c++) 144 for (i = 0, c = &pxa_gpio_chips[0]; i <= pxa_last_gpio; i += 32, c++)
104 145
@@ -431,47 +472,39 @@ static struct irq_chip pxa_muxed_gpio_chip = {
431 .irq_set_wake = pxa_gpio_set_wake, 472 .irq_set_wake = pxa_gpio_set_wake,
432}; 473};
433 474
434static int pxa_gpio_nums(void) 475static int pxa_gpio_nums(struct platform_device *pdev)
435{ 476{
477 const struct platform_device_id *id = platform_get_device_id(pdev);
478 struct pxa_gpio_id *pxa_id = (struct pxa_gpio_id *)id->driver_data;
436 int count = 0; 479 int count = 0;
437 480
438#ifdef CONFIG_ARCH_PXA 481 switch (pxa_id->type) {
439 if (cpu_is_pxa25x()) { 482 case PXA25X_GPIO:
440#ifdef CONFIG_CPU_PXA26x 483 case PXA26X_GPIO:
441 count = 89; 484 case PXA27X_GPIO:
442 gpio_type = PXA26X_GPIO; 485 case PXA3XX_GPIO:
443#elif defined(CONFIG_PXA25x) 486 case PXA93X_GPIO:
444 count = 84; 487 case MMP_GPIO:
445 gpio_type = PXA26X_GPIO; 488 case MMP2_GPIO:
446#endif /* CONFIG_CPU_PXA26x */ 489 gpio_type = pxa_id->type;
447 } else if (cpu_is_pxa27x()) { 490 count = pxa_id->gpio_nums - 1;
448 count = 120; 491 break;
449 gpio_type = PXA27X_GPIO; 492 default:
450 } else if (cpu_is_pxa93x()) { 493 count = -EINVAL;
451 count = 191; 494 break;
452 gpio_type = PXA93X_GPIO;
453 } else if (cpu_is_pxa3xx()) {
454 count = 127;
455 gpio_type = PXA3XX_GPIO;
456 }
457#endif /* CONFIG_ARCH_PXA */
458
459#ifdef CONFIG_ARCH_MMP
460 if (cpu_is_pxa168() || cpu_is_pxa910()) {
461 count = 127;
462 gpio_type = MMP_GPIO;
463 } else if (cpu_is_mmp2()) {
464 count = 191;
465 gpio_type = MMP_GPIO;
466 } 495 }
467#endif /* CONFIG_ARCH_MMP */
468 return count; 496 return count;
469} 497}
470 498
471#ifdef CONFIG_OF 499#ifdef CONFIG_OF
472static struct of_device_id pxa_gpio_dt_ids[] = { 500static struct of_device_id pxa_gpio_dt_ids[] = {
473 { .compatible = "mrvl,pxa-gpio" }, 501 { .compatible = "intel,pxa25x-gpio", .data = &pxa25x_id, },
474 { .compatible = "mrvl,mmp-gpio", .data = (void *)MMP_GPIO }, 502 { .compatible = "intel,pxa26x-gpio", .data = &pxa26x_id, },
503 { .compatible = "intel,pxa27x-gpio", .data = &pxa27x_id, },
504 { .compatible = "intel,pxa3xx-gpio", .data = &pxa3xx_id, },
505 { .compatible = "marvell,pxa93x-gpio", .data = &pxa93x_id, },
506 { .compatible = "marvell,mmp-gpio", .data = &mmp_id, },
507 { .compatible = "marvell,mmp2-gpio", .data = &mmp2_id, },
475 {} 508 {}
476}; 509};
477 510
@@ -491,16 +524,18 @@ const struct irq_domain_ops pxa_irq_domain_ops = {
491 524
492static int pxa_gpio_probe_dt(struct platform_device *pdev) 525static int pxa_gpio_probe_dt(struct platform_device *pdev)
493{ 526{
494 int ret, nr_banks, nr_gpios; 527 int ret, nr_gpios;
495 struct device_node *prev, *next, *np = pdev->dev.of_node; 528 struct device_node *prev, *next, *np = pdev->dev.of_node;
496 const struct of_device_id *of_id = 529 const struct of_device_id *of_id =
497 of_match_device(pxa_gpio_dt_ids, &pdev->dev); 530 of_match_device(pxa_gpio_dt_ids, &pdev->dev);
531 const struct pxa_gpio_id *gpio_id;
498 532
499 if (!of_id) { 533 if (!of_id || !of_id->data) {
500 dev_err(&pdev->dev, "Failed to find gpio controller\n"); 534 dev_err(&pdev->dev, "Failed to find gpio controller\n");
501 return -EFAULT; 535 return -EFAULT;
502 } 536 }
503 gpio_type = (int)of_id->data; 537 gpio_id = of_id->data;
538 gpio_type = gpio_id->type;
504 539
505 next = of_get_next_child(np, NULL); 540 next = of_get_next_child(np, NULL);
506 prev = next; 541 prev = next;
@@ -509,14 +544,8 @@ static int pxa_gpio_probe_dt(struct platform_device *pdev)
509 ret = -EINVAL; 544 ret = -EINVAL;
510 goto err; 545 goto err;
511 } 546 }
512 for (nr_banks = 1; ; nr_banks++) {
513 next = of_get_next_child(np, prev);
514 if (!next)
515 break;
516 prev = next;
517 }
518 of_node_put(prev); 547 of_node_put(prev);
519 nr_gpios = nr_banks << 5; 548 nr_gpios = gpio_id->gpio_nums;
520 pxa_last_gpio = nr_gpios - 1; 549 pxa_last_gpio = nr_gpios - 1;
521 550
522 irq_base = irq_alloc_descs(-1, 0, nr_gpios, 0); 551 irq_base = irq_alloc_descs(-1, 0, nr_gpios, 0);
@@ -545,19 +574,18 @@ static int pxa_gpio_probe(struct platform_device *pdev)
545 int gpio, irq, ret, use_of = 0; 574 int gpio, irq, ret, use_of = 0;
546 int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0; 575 int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
547 576
548 ret = pxa_gpio_probe_dt(pdev); 577 info = dev_get_platdata(&pdev->dev);
549 if (ret < 0) { 578 if (info) {
550 pxa_last_gpio = pxa_gpio_nums(); 579 irq_base = info->irq_base;
551#ifdef CONFIG_ARCH_PXA 580 if (irq_base <= 0)
552 if (gpio_is_pxa_type(gpio_type)) 581 return -EINVAL;
553 irq_base = PXA_GPIO_TO_IRQ(0); 582 pxa_last_gpio = pxa_gpio_nums(pdev);
554#endif
555#ifdef CONFIG_ARCH_MMP
556 if (gpio_is_mmp_type(gpio_type))
557 irq_base = MMP_GPIO_TO_IRQ(0);
558#endif
559 } else { 583 } else {
584 irq_base = 0;
560 use_of = 1; 585 use_of = 1;
586 ret = pxa_gpio_probe_dt(pdev);
587 if (ret < 0)
588 return -EINVAL;
561 } 589 }
562 590
563 if (!pxa_last_gpio) 591 if (!pxa_last_gpio)
@@ -594,7 +622,6 @@ static int pxa_gpio_probe(struct platform_device *pdev)
594 } 622 }
595 623
596 /* Initialize GPIO chips */ 624 /* Initialize GPIO chips */
597 info = dev_get_platdata(&pdev->dev);
598 pxa_init_gpio_chip(pxa_last_gpio, info ? info->gpio_set_wake : NULL); 625 pxa_init_gpio_chip(pxa_last_gpio, info ? info->gpio_set_wake : NULL);
599 626
600 /* clear all GPIO edge detects */ 627 /* clear all GPIO edge detects */
@@ -634,12 +661,24 @@ static int pxa_gpio_probe(struct platform_device *pdev)
634 return 0; 661 return 0;
635} 662}
636 663
664static const struct platform_device_id gpio_id_table[] = {
665 { "pxa25x-gpio", (unsigned long)&pxa25x_id },
666 { "pxa26x-gpio", (unsigned long)&pxa26x_id },
667 { "pxa27x-gpio", (unsigned long)&pxa27x_id },
668 { "pxa3xx-gpio", (unsigned long)&pxa3xx_id },
669 { "pxa93x-gpio", (unsigned long)&pxa93x_id },
670 { "mmp-gpio", (unsigned long)&mmp_id },
671 { "mmp2-gpio", (unsigned long)&mmp2_id },
672 { },
673};
674
637static struct platform_driver pxa_gpio_driver = { 675static struct platform_driver pxa_gpio_driver = {
638 .probe = pxa_gpio_probe, 676 .probe = pxa_gpio_probe,
639 .driver = { 677 .driver = {
640 .name = "pxa-gpio", 678 .name = "pxa-gpio",
641 .of_match_table = of_match_ptr(pxa_gpio_dt_ids), 679 .of_match_table = of_match_ptr(pxa_gpio_dt_ids),
642 }, 680 },
681 .id_table = gpio_id_table,
643}; 682};
644 683
645static int __init pxa_gpio_init(void) 684static int __init pxa_gpio_init(void)