1 /*
2 * Exynos specific support for Samsung pinctrl/gpiolib driver with eint support.
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
6 * Copyright (c) 2012 Linaro Ltd
7 * http://www.linaro.org
8 *
9 * Author: Thomas Abraham <thomas.ab@samsung.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This file contains the Samsung Exynos specific information required by the
17 * the Samsung pinctrl/gpiolib driver. It also includes the implementation of
18 * external gpio and wakeup interrupt support.
19 */
20
21 #include <linux/module.h>
22 #include <linux/device.h>
23 #include <linux/interrupt.h>
24 #include <linux/irqdomain.h>
25 #include <linux/irq.h>
26 #include <linux/irqchip/chained_irq.h>
27 #include <linux/of_irq.h>
28 #include <linux/io.h>
29 #include <linux/slab.h>
30 #include <linux/spinlock.h>
31 #include <linux/err.h>
32
33 #include "pinctrl-samsung.h"
34 #include "pinctrl-exynos.h"
35
36
37 static struct samsung_pin_bank_type bank_type_off = {
38 .fld_width = { 4, 1, 2, 2, 2, 2, },
39 .reg_offset = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, },
40 };
41
42 static struct samsung_pin_bank_type bank_type_alive = {
43 .fld_width = { 4, 1, 2, 2, },
44 .reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
45 };
46
47 /* list of external wakeup controllers supported */
48 static const struct of_device_id exynos_wkup_irq_ids[] = {
49 { .compatible = "samsung,exynos4210-wakeup-eint", },
50 { }
51 };
52
exynos_gpio_irq_unmask(struct irq_data * irqd)53 static void exynos_gpio_irq_unmask(struct irq_data *irqd)
54 {
55 struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
56 struct samsung_pinctrl_drv_data *d = bank->drvdata;
57 unsigned long reg_mask = d->ctrl->geint_mask + bank->eint_offset;
58 unsigned long mask;
59
60 mask = readl(d->virt_base + reg_mask);
61 mask &= ~(1 << irqd->hwirq);
62 writel(mask, d->virt_base + reg_mask);
63 }
64
exynos_gpio_irq_mask(struct irq_data * irqd)65 static void exynos_gpio_irq_mask(struct irq_data *irqd)
66 {
67 struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
68 struct samsung_pinctrl_drv_data *d = bank->drvdata;
69 unsigned long reg_mask = d->ctrl->geint_mask + bank->eint_offset;
70 unsigned long mask;
71
72 mask = readl(d->virt_base + reg_mask);
73 mask |= 1 << irqd->hwirq;
74 writel(mask, d->virt_base + reg_mask);
75 }
76
exynos_gpio_irq_ack(struct irq_data * irqd)77 static void exynos_gpio_irq_ack(struct irq_data *irqd)
78 {
79 struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
80 struct samsung_pinctrl_drv_data *d = bank->drvdata;
81 unsigned long reg_pend = d->ctrl->geint_pend + bank->eint_offset;
82
83 writel(1 << irqd->hwirq, d->virt_base + reg_pend);
84 }
85
exynos_gpio_irq_set_type(struct irq_data * irqd,unsigned int type)86 static int exynos_gpio_irq_set_type(struct irq_data *irqd, unsigned int type)
87 {
88 struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
89 struct samsung_pin_bank_type *bank_type = bank->type;
90 struct samsung_pinctrl_drv_data *d = bank->drvdata;
91 struct samsung_pin_ctrl *ctrl = d->ctrl;
92 unsigned int pin = irqd->hwirq;
93 unsigned int shift = EXYNOS_EINT_CON_LEN * pin;
94 unsigned int con, trig_type;
95 unsigned long reg_con = ctrl->geint_con + bank->eint_offset;
96 unsigned long flags;
97 unsigned int mask;
98
99 switch (type) {
100 case IRQ_TYPE_EDGE_RISING:
101 trig_type = EXYNOS_EINT_EDGE_RISING;
102 break;
103 case IRQ_TYPE_EDGE_FALLING:
104 trig_type = EXYNOS_EINT_EDGE_FALLING;
105 break;
106 case IRQ_TYPE_EDGE_BOTH:
107 trig_type = EXYNOS_EINT_EDGE_BOTH;
108 break;
109 case IRQ_TYPE_LEVEL_HIGH:
110 trig_type = EXYNOS_EINT_LEVEL_HIGH;
111 break;
112 case IRQ_TYPE_LEVEL_LOW:
113 trig_type = EXYNOS_EINT_LEVEL_LOW;
114 break;
115 default:
116 pr_err("unsupported external interrupt type\n");
117 return -EINVAL;
118 }
119
120 if (type & IRQ_TYPE_EDGE_BOTH)
121 __irq_set_handler_locked(irqd->irq, handle_edge_irq);
122 else
123 __irq_set_handler_locked(irqd->irq, handle_level_irq);
124
125 con = readl(d->virt_base + reg_con);
126 con &= ~(EXYNOS_EINT_CON_MASK << shift);
127 con |= trig_type << shift;
128 writel(con, d->virt_base + reg_con);
129
130 reg_con = bank->pctl_offset + bank_type->reg_offset[PINCFG_TYPE_FUNC];
131 shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC];
132 mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
133
134 spin_lock_irqsave(&bank->slock, flags);
135
136 con = readl(d->virt_base + reg_con);
137 con &= ~(mask << shift);
138 con |= EXYNOS_EINT_FUNC << shift;
139 writel(con, d->virt_base + reg_con);
140
141 spin_unlock_irqrestore(&bank->slock, flags);
142
143 return 0;
144 }
145
146 /*
147 * irq_chip for gpio interrupts.
148 */
149 static struct irq_chip exynos_gpio_irq_chip = {
150 .name = "exynos_gpio_irq_chip",
151 .irq_unmask = exynos_gpio_irq_unmask,
152 .irq_mask = exynos_gpio_irq_mask,
153 .irq_ack = exynos_gpio_irq_ack,
154 .irq_set_type = exynos_gpio_irq_set_type,
155 };
156
exynos_gpio_irq_map(struct irq_domain * h,unsigned int virq,irq_hw_number_t hw)157 static int exynos_gpio_irq_map(struct irq_domain *h, unsigned int virq,
158 irq_hw_number_t hw)
159 {
160 struct samsung_pin_bank *b = h->host_data;
161
162 irq_set_chip_data(virq, b);
163 irq_set_chip_and_handler(virq, &exynos_gpio_irq_chip,
164 handle_level_irq);
165 set_irq_flags(virq, IRQF_VALID);
166 return 0;
167 }
168
169 /*
170 * irq domain callbacks for external gpio interrupt controller.
171 */
172 static const struct irq_domain_ops exynos_gpio_irqd_ops = {
173 .map = exynos_gpio_irq_map,
174 .xlate = irq_domain_xlate_twocell,
175 };
176
exynos_eint_gpio_irq(int irq,void * data)177 static irqreturn_t exynos_eint_gpio_irq(int irq, void *data)
178 {
179 struct samsung_pinctrl_drv_data *d = data;
180 struct samsung_pin_ctrl *ctrl = d->ctrl;
181 struct samsung_pin_bank *bank = ctrl->pin_banks;
182 unsigned int svc, group, pin, virq;
183
184 svc = readl(d->virt_base + ctrl->svc);
185 group = EXYNOS_SVC_GROUP(svc);
186 pin = svc & EXYNOS_SVC_NUM_MASK;
187
188 if (!group)
189 return IRQ_HANDLED;
190 bank += (group - 1);
191
192 virq = irq_linear_revmap(bank->irq_domain, pin);
193 if (!virq)
194 return IRQ_NONE;
195 generic_handle_irq(virq);
196 return IRQ_HANDLED;
197 }
198
199 struct exynos_eint_gpio_save {
200 u32 eint_con;
201 u32 eint_fltcon0;
202 u32 eint_fltcon1;
203 };
204
205 /*
206 * exynos_eint_gpio_init() - setup handling of external gpio interrupts.
207 * @d: driver data of samsung pinctrl driver.
208 */
exynos_eint_gpio_init(struct samsung_pinctrl_drv_data * d)209 static int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
210 {
211 struct samsung_pin_bank *bank;
212 struct device *dev = d->dev;
213 int ret;
214 int i;
215
216 if (!d->irq) {
217 dev_err(dev, "irq number not available\n");
218 return -EINVAL;
219 }
220
221 ret = devm_request_irq(dev, d->irq, exynos_eint_gpio_irq,
222 0, dev_name(dev), d);
223 if (ret) {
224 dev_err(dev, "irq request failed\n");
225 return -ENXIO;
226 }
227
228 bank = d->ctrl->pin_banks;
229 for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
230 if (bank->eint_type != EINT_TYPE_GPIO)
231 continue;
232 bank->irq_domain = irq_domain_add_linear(bank->of_node,
233 bank->nr_pins, &exynos_gpio_irqd_ops, bank);
234 if (!bank->irq_domain) {
235 dev_err(dev, "gpio irq domain add failed\n");
236 ret = -ENXIO;
237 goto err_domains;
238 }
239
240 bank->soc_priv = devm_kzalloc(d->dev,
241 sizeof(struct exynos_eint_gpio_save), GFP_KERNEL);
242 if (!bank->soc_priv) {
243 irq_domain_remove(bank->irq_domain);
244 ret = -ENOMEM;
245 goto err_domains;
246 }
247 }
248
249 return 0;
250
251 err_domains:
252 for (--i, --bank; i >= 0; --i, --bank) {
253 if (bank->eint_type != EINT_TYPE_GPIO)
254 continue;
255 irq_domain_remove(bank->irq_domain);
256 }
257
258 return ret;
259 }
260
exynos_wkup_irq_unmask(struct irq_data * irqd)261 static void exynos_wkup_irq_unmask(struct irq_data *irqd)
262 {
263 struct samsung_pin_bank *b = irq_data_get_irq_chip_data(irqd);
264 struct samsung_pinctrl_drv_data *d = b->drvdata;
265 unsigned long reg_mask = d->ctrl->weint_mask + b->eint_offset;
266 unsigned long mask;
267
268 mask = readl(d->virt_base + reg_mask);
269 mask &= ~(1 << irqd->hwirq);
270 writel(mask, d->virt_base + reg_mask);
271 }
272
exynos_wkup_irq_mask(struct irq_data * irqd)273 static void exynos_wkup_irq_mask(struct irq_data *irqd)
274 {
275 struct samsung_pin_bank *b = irq_data_get_irq_chip_data(irqd);
276 struct samsung_pinctrl_drv_data *d = b->drvdata;
277 unsigned long reg_mask = d->ctrl->weint_mask + b->eint_offset;
278 unsigned long mask;
279
280 mask = readl(d->virt_base + reg_mask);
281 mask |= 1 << irqd->hwirq;
282 writel(mask, d->virt_base + reg_mask);
283 }
284
exynos_wkup_irq_ack(struct irq_data * irqd)285 static void exynos_wkup_irq_ack(struct irq_data *irqd)
286 {
287 struct samsung_pin_bank *b = irq_data_get_irq_chip_data(irqd);
288 struct samsung_pinctrl_drv_data *d = b->drvdata;
289 unsigned long pend = d->ctrl->weint_pend + b->eint_offset;
290
291 writel(1 << irqd->hwirq, d->virt_base + pend);
292 }
293
exynos_wkup_irq_set_type(struct irq_data * irqd,unsigned int type)294 static int exynos_wkup_irq_set_type(struct irq_data *irqd, unsigned int type)
295 {
296 struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
297 struct samsung_pin_bank_type *bank_type = bank->type;
298 struct samsung_pinctrl_drv_data *d = bank->drvdata;
299 unsigned int pin = irqd->hwirq;
300 unsigned long reg_con = d->ctrl->weint_con + bank->eint_offset;
301 unsigned long shift = EXYNOS_EINT_CON_LEN * pin;
302 unsigned long con, trig_type;
303 unsigned long flags;
304 unsigned int mask;
305
306 switch (type) {
307 case IRQ_TYPE_EDGE_RISING:
308 trig_type = EXYNOS_EINT_EDGE_RISING;
309 break;
310 case IRQ_TYPE_EDGE_FALLING:
311 trig_type = EXYNOS_EINT_EDGE_FALLING;
312 break;
313 case IRQ_TYPE_EDGE_BOTH:
314 trig_type = EXYNOS_EINT_EDGE_BOTH;
315 break;
316 case IRQ_TYPE_LEVEL_HIGH:
317 trig_type = EXYNOS_EINT_LEVEL_HIGH;
318 break;
319 case IRQ_TYPE_LEVEL_LOW:
320 trig_type = EXYNOS_EINT_LEVEL_LOW;
321 break;
322 default:
323 pr_err("unsupported external interrupt type\n");
324 return -EINVAL;
325 }
326
327 if (type & IRQ_TYPE_EDGE_BOTH)
328 __irq_set_handler_locked(irqd->irq, handle_edge_irq);
329 else
330 __irq_set_handler_locked(irqd->irq, handle_level_irq);
331
332 con = readl(d->virt_base + reg_con);
333 con &= ~(EXYNOS_EINT_CON_MASK << shift);
334 con |= trig_type << shift;
335 writel(con, d->virt_base + reg_con);
336
337 reg_con = bank->pctl_offset + bank_type->reg_offset[PINCFG_TYPE_FUNC];
338 shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC];
339 mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
340
341 spin_lock_irqsave(&bank->slock, flags);
342
343 con = readl(d->virt_base + reg_con);
344 con &= ~(mask << shift);
345 con |= EXYNOS_EINT_FUNC << shift;
346 writel(con, d->virt_base + reg_con);
347
348 spin_unlock_irqrestore(&bank->slock, flags);
349
350 return 0;
351 }
352
353 static u32 exynos_eint_wake_mask = 0xffffffff;
354
exynos_get_eint_wake_mask(void)355 u32 exynos_get_eint_wake_mask(void)
356 {
357 return exynos_eint_wake_mask;
358 }
359
exynos_wkup_irq_set_wake(struct irq_data * irqd,unsigned int on)360 static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on)
361 {
362 struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
363 unsigned long bit = 1UL << (2 * bank->eint_offset + irqd->hwirq);
364
365 pr_info("wake %s for irq %d\n", on ? "enabled" : "disabled", irqd->irq);
366
367 if (!on)
368 exynos_eint_wake_mask |= bit;
369 else
370 exynos_eint_wake_mask &= ~bit;
371
372 return 0;
373 }
374
375 /*
376 * irq_chip for wakeup interrupts
377 */
378 static struct irq_chip exynos_wkup_irq_chip = {
379 .name = "exynos_wkup_irq_chip",
380 .irq_unmask = exynos_wkup_irq_unmask,
381 .irq_mask = exynos_wkup_irq_mask,
382 .irq_ack = exynos_wkup_irq_ack,
383 .irq_set_type = exynos_wkup_irq_set_type,
384 .irq_set_wake = exynos_wkup_irq_set_wake,
385 };
386
387 /* interrupt handler for wakeup interrupts 0..15 */
exynos_irq_eint0_15(unsigned int irq,struct irq_desc * desc)388 static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
389 {
390 struct exynos_weint_data *eintd = irq_get_handler_data(irq);
391 struct samsung_pin_bank *bank = eintd->bank;
392 struct irq_chip *chip = irq_get_chip(irq);
393 int eint_irq;
394
395 chained_irq_enter(chip, desc);
396 chip->irq_mask(&desc->irq_data);
397
398 if (chip->irq_ack)
399 chip->irq_ack(&desc->irq_data);
400
401 eint_irq = irq_linear_revmap(bank->irq_domain, eintd->irq);
402 generic_handle_irq(eint_irq);
403 chip->irq_unmask(&desc->irq_data);
404 chained_irq_exit(chip, desc);
405 }
406
exynos_irq_demux_eint(unsigned long pend,struct irq_domain * domain)407 static inline void exynos_irq_demux_eint(unsigned long pend,
408 struct irq_domain *domain)
409 {
410 unsigned int irq;
411
412 while (pend) {
413 irq = fls(pend) - 1;
414 generic_handle_irq(irq_find_mapping(domain, irq));
415 pend &= ~(1 << irq);
416 }
417 }
418
419 /* interrupt handler for wakeup interrupt 16 */
exynos_irq_demux_eint16_31(unsigned int irq,struct irq_desc * desc)420 static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
421 {
422 struct irq_chip *chip = irq_get_chip(irq);
423 struct exynos_muxed_weint_data *eintd = irq_get_handler_data(irq);
424 struct samsung_pinctrl_drv_data *d = eintd->banks[0]->drvdata;
425 struct samsung_pin_ctrl *ctrl = d->ctrl;
426 unsigned long pend;
427 unsigned long mask;
428 int i;
429
430 chained_irq_enter(chip, desc);
431
432 for (i = 0; i < eintd->nr_banks; ++i) {
433 struct samsung_pin_bank *b = eintd->banks[i];
434 pend = readl(d->virt_base + ctrl->weint_pend + b->eint_offset);
435 mask = readl(d->virt_base + ctrl->weint_mask + b->eint_offset);
436 exynos_irq_demux_eint(pend & ~mask, b->irq_domain);
437 }
438
439 chained_irq_exit(chip, desc);
440 }
441
exynos_wkup_irq_map(struct irq_domain * h,unsigned int virq,irq_hw_number_t hw)442 static int exynos_wkup_irq_map(struct irq_domain *h, unsigned int virq,
443 irq_hw_number_t hw)
444 {
445 irq_set_chip_and_handler(virq, &exynos_wkup_irq_chip, handle_level_irq);
446 irq_set_chip_data(virq, h->host_data);
447 set_irq_flags(virq, IRQF_VALID);
448 return 0;
449 }
450
451 /*
452 * irq domain callbacks for external wakeup interrupt controller.
453 */
454 static const struct irq_domain_ops exynos_wkup_irqd_ops = {
455 .map = exynos_wkup_irq_map,
456 .xlate = irq_domain_xlate_twocell,
457 };
458
459 /*
460 * exynos_eint_wkup_init() - setup handling of external wakeup interrupts.
461 * @d: driver data of samsung pinctrl driver.
462 */
exynos_eint_wkup_init(struct samsung_pinctrl_drv_data * d)463 static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
464 {
465 struct device *dev = d->dev;
466 struct device_node *wkup_np = NULL;
467 struct device_node *np;
468 struct samsung_pin_bank *bank;
469 struct exynos_weint_data *weint_data;
470 struct exynos_muxed_weint_data *muxed_data;
471 unsigned int muxed_banks = 0;
472 unsigned int i;
473 int idx, irq;
474
475 for_each_child_of_node(dev->of_node, np) {
476 if (of_match_node(exynos_wkup_irq_ids, np)) {
477 wkup_np = np;
478 break;
479 }
480 }
481 if (!wkup_np)
482 return -ENODEV;
483
484 bank = d->ctrl->pin_banks;
485 for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
486 if (bank->eint_type != EINT_TYPE_WKUP)
487 continue;
488
489 bank->irq_domain = irq_domain_add_linear(bank->of_node,
490 bank->nr_pins, &exynos_wkup_irqd_ops, bank);
491 if (!bank->irq_domain) {
492 dev_err(dev, "wkup irq domain add failed\n");
493 return -ENXIO;
494 }
495
496 if (!of_find_property(bank->of_node, "interrupts", NULL)) {
497 bank->eint_type = EINT_TYPE_WKUP_MUX;
498 ++muxed_banks;
499 continue;
500 }
501
502 weint_data = devm_kzalloc(dev, bank->nr_pins
503 * sizeof(*weint_data), GFP_KERNEL);
504 if (!weint_data) {
505 dev_err(dev, "could not allocate memory for weint_data\n");
506 return -ENOMEM;
507 }
508
509 for (idx = 0; idx < bank->nr_pins; ++idx) {
510 irq = irq_of_parse_and_map(bank->of_node, idx);
511 if (!irq) {
512 dev_err(dev, "irq number for eint-%s-%d not found\n",
513 bank->name, idx);
514 continue;
515 }
516 weint_data[idx].irq = idx;
517 weint_data[idx].bank = bank;
518 irq_set_handler_data(irq, &weint_data[idx]);
519 irq_set_chained_handler(irq, exynos_irq_eint0_15);
520 }
521 }
522
523 if (!muxed_banks)
524 return 0;
525
526 irq = irq_of_parse_and_map(wkup_np, 0);
527 if (!irq) {
528 dev_err(dev, "irq number for muxed EINTs not found\n");
529 return 0;
530 }
531
532 muxed_data = devm_kzalloc(dev, sizeof(*muxed_data)
533 + muxed_banks*sizeof(struct samsung_pin_bank *), GFP_KERNEL);
534 if (!muxed_data) {
535 dev_err(dev, "could not allocate memory for muxed_data\n");
536 return -ENOMEM;
537 }
538
539 irq_set_chained_handler(irq, exynos_irq_demux_eint16_31);
540 irq_set_handler_data(irq, muxed_data);
541
542 bank = d->ctrl->pin_banks;
543 idx = 0;
544 for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
545 if (bank->eint_type != EINT_TYPE_WKUP_MUX)
546 continue;
547
548 muxed_data->banks[idx++] = bank;
549 }
550 muxed_data->nr_banks = muxed_banks;
551
552 return 0;
553 }
554
exynos_pinctrl_suspend_bank(struct samsung_pinctrl_drv_data * drvdata,struct samsung_pin_bank * bank)555 static void exynos_pinctrl_suspend_bank(
556 struct samsung_pinctrl_drv_data *drvdata,
557 struct samsung_pin_bank *bank)
558 {
559 struct exynos_eint_gpio_save *save = bank->soc_priv;
560 void __iomem *regs = drvdata->virt_base;
561
562 save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET
563 + bank->eint_offset);
564 save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
565 + 2 * bank->eint_offset);
566 save->eint_fltcon1 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
567 + 2 * bank->eint_offset + 4);
568
569 pr_debug("%s: save con %#010x\n", bank->name, save->eint_con);
570 pr_debug("%s: save fltcon0 %#010x\n", bank->name, save->eint_fltcon0);
571 pr_debug("%s: save fltcon1 %#010x\n", bank->name, save->eint_fltcon1);
572 }
573
exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data * drvdata)574 static void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata)
575 {
576 struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
577 struct samsung_pin_bank *bank = ctrl->pin_banks;
578 int i;
579
580 for (i = 0; i < ctrl->nr_banks; ++i, ++bank)
581 if (bank->eint_type == EINT_TYPE_GPIO)
582 exynos_pinctrl_suspend_bank(drvdata, bank);
583 }
584
exynos_pinctrl_resume_bank(struct samsung_pinctrl_drv_data * drvdata,struct samsung_pin_bank * bank)585 static void exynos_pinctrl_resume_bank(
586 struct samsung_pinctrl_drv_data *drvdata,
587 struct samsung_pin_bank *bank)
588 {
589 struct exynos_eint_gpio_save *save = bank->soc_priv;
590 void __iomem *regs = drvdata->virt_base;
591
592 pr_debug("%s: con %#010x => %#010x\n", bank->name,
593 readl(regs + EXYNOS_GPIO_ECON_OFFSET
594 + bank->eint_offset), save->eint_con);
595 pr_debug("%s: fltcon0 %#010x => %#010x\n", bank->name,
596 readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
597 + 2 * bank->eint_offset), save->eint_fltcon0);
598 pr_debug("%s: fltcon1 %#010x => %#010x\n", bank->name,
599 readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
600 + 2 * bank->eint_offset + 4), save->eint_fltcon1);
601
602 writel(save->eint_con, regs + EXYNOS_GPIO_ECON_OFFSET
603 + bank->eint_offset);
604 writel(save->eint_fltcon0, regs + EXYNOS_GPIO_EFLTCON_OFFSET
605 + 2 * bank->eint_offset);
606 writel(save->eint_fltcon1, regs + EXYNOS_GPIO_EFLTCON_OFFSET
607 + 2 * bank->eint_offset + 4);
608 }
609
exynos_pinctrl_resume(struct samsung_pinctrl_drv_data * drvdata)610 static void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata)
611 {
612 struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
613 struct samsung_pin_bank *bank = ctrl->pin_banks;
614 int i;
615
616 for (i = 0; i < ctrl->nr_banks; ++i, ++bank)
617 if (bank->eint_type == EINT_TYPE_GPIO)
618 exynos_pinctrl_resume_bank(drvdata, bank);
619 }
620
621 /* pin banks of exynos4210 pin-controller 0 */
622 static struct samsung_pin_bank exynos4210_pin_banks0[] = {
623 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
624 EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
625 EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
626 EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
627 EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
628 EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpd0", 0x14),
629 EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpd1", 0x18),
630 EXYNOS_PIN_BANK_EINTG(5, 0x0E0, "gpe0", 0x1c),
631 EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpe1", 0x20),
632 EXYNOS_PIN_BANK_EINTG(6, 0x120, "gpe2", 0x24),
633 EXYNOS_PIN_BANK_EINTG(8, 0x140, "gpe3", 0x28),
634 EXYNOS_PIN_BANK_EINTG(8, 0x160, "gpe4", 0x2c),
635 EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf0", 0x30),
636 EXYNOS_PIN_BANK_EINTG(8, 0x1A0, "gpf1", 0x34),
637 EXYNOS_PIN_BANK_EINTG(8, 0x1C0, "gpf2", 0x38),
638 EXYNOS_PIN_BANK_EINTG(6, 0x1E0, "gpf3", 0x3c),
639 };
640
641 /* pin banks of exynos4210 pin-controller 1 */
642 static struct samsung_pin_bank exynos4210_pin_banks1[] = {
643 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpj0", 0x00),
644 EXYNOS_PIN_BANK_EINTG(5, 0x020, "gpj1", 0x04),
645 EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpk0", 0x08),
646 EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
647 EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
648 EXYNOS_PIN_BANK_EINTG(7, 0x0A0, "gpk3", 0x14),
649 EXYNOS_PIN_BANK_EINTG(8, 0x0C0, "gpl0", 0x18),
650 EXYNOS_PIN_BANK_EINTG(3, 0x0E0, "gpl1", 0x1c),
651 EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpl2", 0x20),
652 EXYNOS_PIN_BANK_EINTN(6, 0x120, "gpy0"),
653 EXYNOS_PIN_BANK_EINTN(4, 0x140, "gpy1"),
654 EXYNOS_PIN_BANK_EINTN(6, 0x160, "gpy2"),
655 EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy3"),
656 EXYNOS_PIN_BANK_EINTN(8, 0x1A0, "gpy4"),
657 EXYNOS_PIN_BANK_EINTN(8, 0x1C0, "gpy5"),
658 EXYNOS_PIN_BANK_EINTN(8, 0x1E0, "gpy6"),
659 EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
660 EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
661 EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
662 EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
663 };
664
665 /* pin banks of exynos4210 pin-controller 2 */
666 static struct samsung_pin_bank exynos4210_pin_banks2[] = {
667 EXYNOS_PIN_BANK_EINTN(7, 0x000, "gpz"),
668 };
669
670 /*
671 * Samsung pinctrl driver data for Exynos4210 SoC. Exynos4210 SoC includes
672 * three gpio/pin-mux/pinconfig controllers.
673 */
674 struct samsung_pin_ctrl exynos4210_pin_ctrl[] = {
675 {
676 /* pin-controller instance 0 data */
677 .pin_banks = exynos4210_pin_banks0,
678 .nr_banks = ARRAY_SIZE(exynos4210_pin_banks0),
679 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
680 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
681 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
682 .svc = EXYNOS_SVC_OFFSET,
683 .eint_gpio_init = exynos_eint_gpio_init,
684 .suspend = exynos_pinctrl_suspend,
685 .resume = exynos_pinctrl_resume,
686 .label = "exynos4210-gpio-ctrl0",
687 }, {
688 /* pin-controller instance 1 data */
689 .pin_banks = exynos4210_pin_banks1,
690 .nr_banks = ARRAY_SIZE(exynos4210_pin_banks1),
691 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
692 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
693 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
694 .weint_con = EXYNOS_WKUP_ECON_OFFSET,
695 .weint_mask = EXYNOS_WKUP_EMASK_OFFSET,
696 .weint_pend = EXYNOS_WKUP_EPEND_OFFSET,
697 .svc = EXYNOS_SVC_OFFSET,
698 .eint_gpio_init = exynos_eint_gpio_init,
699 .eint_wkup_init = exynos_eint_wkup_init,
700 .suspend = exynos_pinctrl_suspend,
701 .resume = exynos_pinctrl_resume,
702 .label = "exynos4210-gpio-ctrl1",
703 }, {
704 /* pin-controller instance 2 data */
705 .pin_banks = exynos4210_pin_banks2,
706 .nr_banks = ARRAY_SIZE(exynos4210_pin_banks2),
707 .label = "exynos4210-gpio-ctrl2",
708 },
709 };
710
711 /* pin banks of exynos4x12 pin-controller 0 */
712 static struct samsung_pin_bank exynos4x12_pin_banks0[] = {
713 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
714 EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
715 EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
716 EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
717 EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
718 EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpd0", 0x14),
719 EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpd1", 0x18),
720 EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf0", 0x30),
721 EXYNOS_PIN_BANK_EINTG(8, 0x1A0, "gpf1", 0x34),
722 EXYNOS_PIN_BANK_EINTG(8, 0x1C0, "gpf2", 0x38),
723 EXYNOS_PIN_BANK_EINTG(6, 0x1E0, "gpf3", 0x3c),
724 EXYNOS_PIN_BANK_EINTG(8, 0x240, "gpj0", 0x40),
725 EXYNOS_PIN_BANK_EINTG(5, 0x260, "gpj1", 0x44),
726 };
727
728 /* pin banks of exynos4x12 pin-controller 1 */
729 static struct samsung_pin_bank exynos4x12_pin_banks1[] = {
730 EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpk0", 0x08),
731 EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
732 EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
733 EXYNOS_PIN_BANK_EINTG(7, 0x0A0, "gpk3", 0x14),
734 EXYNOS_PIN_BANK_EINTG(7, 0x0C0, "gpl0", 0x18),
735 EXYNOS_PIN_BANK_EINTG(2, 0x0E0, "gpl1", 0x1c),
736 EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpl2", 0x20),
737 EXYNOS_PIN_BANK_EINTG(8, 0x260, "gpm0", 0x24),
738 EXYNOS_PIN_BANK_EINTG(7, 0x280, "gpm1", 0x28),
739 EXYNOS_PIN_BANK_EINTG(5, 0x2A0, "gpm2", 0x2c),
740 EXYNOS_PIN_BANK_EINTG(8, 0x2C0, "gpm3", 0x30),
741 EXYNOS_PIN_BANK_EINTG(8, 0x2E0, "gpm4", 0x34),
742 EXYNOS_PIN_BANK_EINTN(6, 0x120, "gpy0"),
743 EXYNOS_PIN_BANK_EINTN(4, 0x140, "gpy1"),
744 EXYNOS_PIN_BANK_EINTN(6, 0x160, "gpy2"),
745 EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy3"),
746 EXYNOS_PIN_BANK_EINTN(8, 0x1A0, "gpy4"),
747 EXYNOS_PIN_BANK_EINTN(8, 0x1C0, "gpy5"),
748 EXYNOS_PIN_BANK_EINTN(8, 0x1E0, "gpy6"),
749 EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
750 EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
751 EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
752 EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
753 };
754
755 /* pin banks of exynos4x12 pin-controller 2 */
756 static struct samsung_pin_bank exynos4x12_pin_banks2[] = {
757 EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
758 };
759
760 /* pin banks of exynos4x12 pin-controller 3 */
761 static struct samsung_pin_bank exynos4x12_pin_banks3[] = {
762 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpv0", 0x00),
763 EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpv1", 0x04),
764 EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpv2", 0x08),
765 EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpv3", 0x0c),
766 EXYNOS_PIN_BANK_EINTG(2, 0x080, "gpv4", 0x10),
767 };
768
769 /*
770 * Samsung pinctrl driver data for Exynos4x12 SoC. Exynos4x12 SoC includes
771 * four gpio/pin-mux/pinconfig controllers.
772 */
773 struct samsung_pin_ctrl exynos4x12_pin_ctrl[] = {
774 {
775 /* pin-controller instance 0 data */
776 .pin_banks = exynos4x12_pin_banks0,
777 .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks0),
778 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
779 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
780 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
781 .svc = EXYNOS_SVC_OFFSET,
782 .eint_gpio_init = exynos_eint_gpio_init,
783 .suspend = exynos_pinctrl_suspend,
784 .resume = exynos_pinctrl_resume,
785 .label = "exynos4x12-gpio-ctrl0",
786 }, {
787 /* pin-controller instance 1 data */
788 .pin_banks = exynos4x12_pin_banks1,
789 .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks1),
790 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
791 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
792 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
793 .weint_con = EXYNOS_WKUP_ECON_OFFSET,
794 .weint_mask = EXYNOS_WKUP_EMASK_OFFSET,
795 .weint_pend = EXYNOS_WKUP_EPEND_OFFSET,
796 .svc = EXYNOS_SVC_OFFSET,
797 .eint_gpio_init = exynos_eint_gpio_init,
798 .eint_wkup_init = exynos_eint_wkup_init,
799 .suspend = exynos_pinctrl_suspend,
800 .resume = exynos_pinctrl_resume,
801 .label = "exynos4x12-gpio-ctrl1",
802 }, {
803 /* pin-controller instance 2 data */
804 .pin_banks = exynos4x12_pin_banks2,
805 .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks2),
806 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
807 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
808 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
809 .svc = EXYNOS_SVC_OFFSET,
810 .eint_gpio_init = exynos_eint_gpio_init,
811 .suspend = exynos_pinctrl_suspend,
812 .resume = exynos_pinctrl_resume,
813 .label = "exynos4x12-gpio-ctrl2",
814 }, {
815 /* pin-controller instance 3 data */
816 .pin_banks = exynos4x12_pin_banks3,
817 .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks3),
818 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
819 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
820 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
821 .svc = EXYNOS_SVC_OFFSET,
822 .eint_gpio_init = exynos_eint_gpio_init,
823 .suspend = exynos_pinctrl_suspend,
824 .resume = exynos_pinctrl_resume,
825 .label = "exynos4x12-gpio-ctrl3",
826 },
827 };
828
829 /* pin banks of exynos5250 pin-controller 0 */
830 static struct samsung_pin_bank exynos5250_pin_banks0[] = {
831 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
832 EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
833 EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
834 EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
835 EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpb1", 0x10),
836 EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpb2", 0x14),
837 EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpb3", 0x18),
838 EXYNOS_PIN_BANK_EINTG(7, 0x0E0, "gpc0", 0x1c),
839 EXYNOS_PIN_BANK_EINTG(4, 0x100, "gpc1", 0x20),
840 EXYNOS_PIN_BANK_EINTG(7, 0x120, "gpc2", 0x24),
841 EXYNOS_PIN_BANK_EINTG(7, 0x140, "gpc3", 0x28),
842 EXYNOS_PIN_BANK_EINTG(4, 0x160, "gpd0", 0x2c),
843 EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpd1", 0x30),
844 EXYNOS_PIN_BANK_EINTG(7, 0x2E0, "gpc4", 0x34),
845 EXYNOS_PIN_BANK_EINTN(6, 0x1A0, "gpy0"),
846 EXYNOS_PIN_BANK_EINTN(4, 0x1C0, "gpy1"),
847 EXYNOS_PIN_BANK_EINTN(6, 0x1E0, "gpy2"),
848 EXYNOS_PIN_BANK_EINTN(8, 0x200, "gpy3"),
849 EXYNOS_PIN_BANK_EINTN(8, 0x220, "gpy4"),
850 EXYNOS_PIN_BANK_EINTN(8, 0x240, "gpy5"),
851 EXYNOS_PIN_BANK_EINTN(8, 0x260, "gpy6"),
852 EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
853 EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
854 EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
855 EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
856 };
857
858 /* pin banks of exynos5250 pin-controller 1 */
859 static struct samsung_pin_bank exynos5250_pin_banks1[] = {
860 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpe0", 0x00),
861 EXYNOS_PIN_BANK_EINTG(2, 0x020, "gpe1", 0x04),
862 EXYNOS_PIN_BANK_EINTG(4, 0x040, "gpf0", 0x08),
863 EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpf1", 0x0c),
864 EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpg0", 0x10),
865 EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpg1", 0x14),
866 EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpg2", 0x18),
867 EXYNOS_PIN_BANK_EINTG(4, 0x0E0, "gph0", 0x1c),
868 EXYNOS_PIN_BANK_EINTG(8, 0x100, "gph1", 0x20),
869 };
870
871 /* pin banks of exynos5250 pin-controller 2 */
872 static struct samsung_pin_bank exynos5250_pin_banks2[] = {
873 EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpv0", 0x00),
874 EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpv1", 0x04),
875 EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpv2", 0x08),
876 EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpv3", 0x0c),
877 EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpv4", 0x10),
878 };
879
880 /* pin banks of exynos5250 pin-controller 3 */
881 static struct samsung_pin_bank exynos5250_pin_banks3[] = {
882 EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
883 };
884
885 /*
886 * Samsung pinctrl driver data for Exynos5250 SoC. Exynos5250 SoC includes
887 * four gpio/pin-mux/pinconfig controllers.
888 */
889 struct samsung_pin_ctrl exynos5250_pin_ctrl[] = {
890 {
891 /* pin-controller instance 0 data */
892 .pin_banks = exynos5250_pin_banks0,
893 .nr_banks = ARRAY_SIZE(exynos5250_pin_banks0),
894 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
895 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
896 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
897 .weint_con = EXYNOS_WKUP_ECON_OFFSET,
898 .weint_mask = EXYNOS_WKUP_EMASK_OFFSET,
899 .weint_pend = EXYNOS_WKUP_EPEND_OFFSET,
900 .svc = EXYNOS_SVC_OFFSET,
901 .eint_gpio_init = exynos_eint_gpio_init,
902 .eint_wkup_init = exynos_eint_wkup_init,
903 .suspend = exynos_pinctrl_suspend,
904 .resume = exynos_pinctrl_resume,
905 .label = "exynos5250-gpio-ctrl0",
906 }, {
907 /* pin-controller instance 1 data */
908 .pin_banks = exynos5250_pin_banks1,
909 .nr_banks = ARRAY_SIZE(exynos5250_pin_banks1),
910 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
911 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
912 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
913 .svc = EXYNOS_SVC_OFFSET,
914 .eint_gpio_init = exynos_eint_gpio_init,
915 .suspend = exynos_pinctrl_suspend,
916 .resume = exynos_pinctrl_resume,
917 .label = "exynos5250-gpio-ctrl1",
918 }, {
919 /* pin-controller instance 2 data */
920 .pin_banks = exynos5250_pin_banks2,
921 .nr_banks = ARRAY_SIZE(exynos5250_pin_banks2),
922 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
923 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
924 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
925 .svc = EXYNOS_SVC_OFFSET,
926 .eint_gpio_init = exynos_eint_gpio_init,
927 .suspend = exynos_pinctrl_suspend,
928 .resume = exynos_pinctrl_resume,
929 .label = "exynos5250-gpio-ctrl2",
930 }, {
931 /* pin-controller instance 3 data */
932 .pin_banks = exynos5250_pin_banks3,
933 .nr_banks = ARRAY_SIZE(exynos5250_pin_banks3),
934 .geint_con = EXYNOS_GPIO_ECON_OFFSET,
935 .geint_mask = EXYNOS_GPIO_EMASK_OFFSET,
936 .geint_pend = EXYNOS_GPIO_EPEND_OFFSET,
937 .svc = EXYNOS_SVC_OFFSET,
938 .eint_gpio_init = exynos_eint_gpio_init,
939 .suspend = exynos_pinctrl_suspend,
940 .resume = exynos_pinctrl_resume,
941 .label = "exynos5250-gpio-ctrl3",
942 },
943 };
944