1 /*
2 * S3C24XX IRQ handling
3 *
4 * Copyright (c) 2003-2004 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
6 * Copyright (c) 2012 Heiko Stuebner <heiko@sntech.de>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/module.h>
22 #include <linux/io.h>
23 #include <linux/err.h>
24 #include <linux/interrupt.h>
25 #include <linux/ioport.h>
26 #include <linux/device.h>
27 #include <linux/irqdomain.h>
28 #include <linux/irqchip/chained_irq.h>
29 #include <linux/of.h>
30 #include <linux/of_irq.h>
31 #include <linux/of_address.h>
32
33 #include <asm/exception.h>
34 #include <asm/mach/irq.h>
35
36 #include <mach/regs-irq.h>
37 #include <mach/regs-gpio.h>
38
39 #include <plat/cpu.h>
40 #include <plat/regs-irqtype.h>
41 #include <plat/pm.h>
42
43 #include "irqchip.h"
44
45 #define S3C_IRQTYPE_NONE 0
46 #define S3C_IRQTYPE_EINT 1
47 #define S3C_IRQTYPE_EDGE 2
48 #define S3C_IRQTYPE_LEVEL 3
49
50 struct s3c_irq_data {
51 unsigned int type;
52 unsigned long offset;
53 unsigned long parent_irq;
54
55 /* data gets filled during init */
56 struct s3c_irq_intc *intc;
57 unsigned long sub_bits;
58 struct s3c_irq_intc *sub_intc;
59 };
60
61 /*
62 * Sructure holding the controller data
63 * @reg_pending register holding pending irqs
64 * @reg_intpnd special register intpnd in main intc
65 * @reg_mask mask register
66 * @domain irq_domain of the controller
67 * @parent parent controller for ext and sub irqs
68 * @irqs irq-data, always s3c_irq_data[32]
69 */
70 struct s3c_irq_intc {
71 void __iomem *reg_pending;
72 void __iomem *reg_intpnd;
73 void __iomem *reg_mask;
74 struct irq_domain *domain;
75 struct s3c_irq_intc *parent;
76 struct s3c_irq_data *irqs;
77 };
78
79 /*
80 * Array holding pointers to the global controller structs
81 * [0] ... main_intc
82 * [1] ... sub_intc
83 * [2] ... main_intc2 on s3c2416
84 */
85 static struct s3c_irq_intc *s3c_intc[3];
86
s3c_irq_mask(struct irq_data * data)87 static void s3c_irq_mask(struct irq_data *data)
88 {
89 struct s3c_irq_data *irq_data = irq_data_get_irq_chip_data(data);
90 struct s3c_irq_intc *intc = irq_data->intc;
91 struct s3c_irq_intc *parent_intc = intc->parent;
92 struct s3c_irq_data *parent_data;
93 unsigned long mask;
94 unsigned int irqno;
95
96 mask = __raw_readl(intc->reg_mask);
97 mask |= (1UL << irq_data->offset);
98 __raw_writel(mask, intc->reg_mask);
99
100 if (parent_intc) {
101 parent_data = &parent_intc->irqs[irq_data->parent_irq];
102
103 /* check to see if we need to mask the parent IRQ
104 * The parent_irq is always in main_intc, so the hwirq
105 * for find_mapping does not need an offset in any case.
106 */
107 if ((mask & parent_data->sub_bits) == parent_data->sub_bits) {
108 irqno = irq_find_mapping(parent_intc->domain,
109 irq_data->parent_irq);
110 s3c_irq_mask(irq_get_irq_data(irqno));
111 }
112 }
113 }
114
s3c_irq_unmask(struct irq_data * data)115 static void s3c_irq_unmask(struct irq_data *data)
116 {
117 struct s3c_irq_data *irq_data = irq_data_get_irq_chip_data(data);
118 struct s3c_irq_intc *intc = irq_data->intc;
119 struct s3c_irq_intc *parent_intc = intc->parent;
120 unsigned long mask;
121 unsigned int irqno;
122
123 mask = __raw_readl(intc->reg_mask);
124 mask &= ~(1UL << irq_data->offset);
125 __raw_writel(mask, intc->reg_mask);
126
127 if (parent_intc) {
128 irqno = irq_find_mapping(parent_intc->domain,
129 irq_data->parent_irq);
130 s3c_irq_unmask(irq_get_irq_data(irqno));
131 }
132 }
133
s3c_irq_ack(struct irq_data * data)134 static inline void s3c_irq_ack(struct irq_data *data)
135 {
136 struct s3c_irq_data *irq_data = irq_data_get_irq_chip_data(data);
137 struct s3c_irq_intc *intc = irq_data->intc;
138 unsigned long bitval = 1UL << irq_data->offset;
139
140 __raw_writel(bitval, intc->reg_pending);
141 if (intc->reg_intpnd)
142 __raw_writel(bitval, intc->reg_intpnd);
143 }
144
s3c_irq_type(struct irq_data * data,unsigned int type)145 static int s3c_irq_type(struct irq_data *data, unsigned int type)
146 {
147 switch (type) {
148 case IRQ_TYPE_NONE:
149 break;
150 case IRQ_TYPE_EDGE_RISING:
151 case IRQ_TYPE_EDGE_FALLING:
152 case IRQ_TYPE_EDGE_BOTH:
153 irq_set_handler(data->irq, handle_edge_irq);
154 break;
155 case IRQ_TYPE_LEVEL_LOW:
156 case IRQ_TYPE_LEVEL_HIGH:
157 irq_set_handler(data->irq, handle_level_irq);
158 break;
159 default:
160 pr_err("No such irq type %d", type);
161 return -EINVAL;
162 }
163
164 return 0;
165 }
166
s3c_irqext_type_set(void __iomem * gpcon_reg,void __iomem * extint_reg,unsigned long gpcon_offset,unsigned long extint_offset,unsigned int type)167 static int s3c_irqext_type_set(void __iomem *gpcon_reg,
168 void __iomem *extint_reg,
169 unsigned long gpcon_offset,
170 unsigned long extint_offset,
171 unsigned int type)
172 {
173 unsigned long newvalue = 0, value;
174
175 /* Set the GPIO to external interrupt mode */
176 value = __raw_readl(gpcon_reg);
177 value = (value & ~(3 << gpcon_offset)) | (0x02 << gpcon_offset);
178 __raw_writel(value, gpcon_reg);
179
180 /* Set the external interrupt to pointed trigger type */
181 switch (type)
182 {
183 case IRQ_TYPE_NONE:
184 pr_warn("No edge setting!\n");
185 break;
186
187 case IRQ_TYPE_EDGE_RISING:
188 newvalue = S3C2410_EXTINT_RISEEDGE;
189 break;
190
191 case IRQ_TYPE_EDGE_FALLING:
192 newvalue = S3C2410_EXTINT_FALLEDGE;
193 break;
194
195 case IRQ_TYPE_EDGE_BOTH:
196 newvalue = S3C2410_EXTINT_BOTHEDGE;
197 break;
198
199 case IRQ_TYPE_LEVEL_LOW:
200 newvalue = S3C2410_EXTINT_LOWLEV;
201 break;
202
203 case IRQ_TYPE_LEVEL_HIGH:
204 newvalue = S3C2410_EXTINT_HILEV;
205 break;
206
207 default:
208 pr_err("No such irq type %d", type);
209 return -EINVAL;
210 }
211
212 value = __raw_readl(extint_reg);
213 value = (value & ~(7 << extint_offset)) | (newvalue << extint_offset);
214 __raw_writel(value, extint_reg);
215
216 return 0;
217 }
218
s3c_irqext_type(struct irq_data * data,unsigned int type)219 static int s3c_irqext_type(struct irq_data *data, unsigned int type)
220 {
221 void __iomem *extint_reg;
222 void __iomem *gpcon_reg;
223 unsigned long gpcon_offset, extint_offset;
224
225 if ((data->hwirq >= 4) && (data->hwirq <= 7)) {
226 gpcon_reg = S3C2410_GPFCON;
227 extint_reg = S3C24XX_EXTINT0;
228 gpcon_offset = (data->hwirq) * 2;
229 extint_offset = (data->hwirq) * 4;
230 } else if ((data->hwirq >= 8) && (data->hwirq <= 15)) {
231 gpcon_reg = S3C2410_GPGCON;
232 extint_reg = S3C24XX_EXTINT1;
233 gpcon_offset = (data->hwirq - 8) * 2;
234 extint_offset = (data->hwirq - 8) * 4;
235 } else if ((data->hwirq >= 16) && (data->hwirq <= 23)) {
236 gpcon_reg = S3C2410_GPGCON;
237 extint_reg = S3C24XX_EXTINT2;
238 gpcon_offset = (data->hwirq - 8) * 2;
239 extint_offset = (data->hwirq - 16) * 4;
240 } else {
241 return -EINVAL;
242 }
243
244 return s3c_irqext_type_set(gpcon_reg, extint_reg, gpcon_offset,
245 extint_offset, type);
246 }
247
s3c_irqext0_type(struct irq_data * data,unsigned int type)248 static int s3c_irqext0_type(struct irq_data *data, unsigned int type)
249 {
250 void __iomem *extint_reg;
251 void __iomem *gpcon_reg;
252 unsigned long gpcon_offset, extint_offset;
253
254 if ((data->hwirq >= 0) && (data->hwirq <= 3)) {
255 gpcon_reg = S3C2410_GPFCON;
256 extint_reg = S3C24XX_EXTINT0;
257 gpcon_offset = (data->hwirq) * 2;
258 extint_offset = (data->hwirq) * 4;
259 } else {
260 return -EINVAL;
261 }
262
263 return s3c_irqext_type_set(gpcon_reg, extint_reg, gpcon_offset,
264 extint_offset, type);
265 }
266
267 static struct irq_chip s3c_irq_chip = {
268 .name = "s3c",
269 .irq_ack = s3c_irq_ack,
270 .irq_mask = s3c_irq_mask,
271 .irq_unmask = s3c_irq_unmask,
272 .irq_set_type = s3c_irq_type,
273 .irq_set_wake = s3c_irq_wake
274 };
275
276 static struct irq_chip s3c_irq_level_chip = {
277 .name = "s3c-level",
278 .irq_mask = s3c_irq_mask,
279 .irq_unmask = s3c_irq_unmask,
280 .irq_ack = s3c_irq_ack,
281 .irq_set_type = s3c_irq_type,
282 };
283
284 static struct irq_chip s3c_irqext_chip = {
285 .name = "s3c-ext",
286 .irq_mask = s3c_irq_mask,
287 .irq_unmask = s3c_irq_unmask,
288 .irq_ack = s3c_irq_ack,
289 .irq_set_type = s3c_irqext_type,
290 .irq_set_wake = s3c_irqext_wake
291 };
292
293 static struct irq_chip s3c_irq_eint0t4 = {
294 .name = "s3c-ext0",
295 .irq_ack = s3c_irq_ack,
296 .irq_mask = s3c_irq_mask,
297 .irq_unmask = s3c_irq_unmask,
298 .irq_set_wake = s3c_irq_wake,
299 .irq_set_type = s3c_irqext0_type,
300 };
301
s3c_irq_demux(unsigned int irq,struct irq_desc * desc)302 static void s3c_irq_demux(unsigned int irq, struct irq_desc *desc)
303 {
304 struct irq_chip *chip = irq_desc_get_chip(desc);
305 struct s3c_irq_data *irq_data = irq_desc_get_chip_data(desc);
306 struct s3c_irq_intc *intc = irq_data->intc;
307 struct s3c_irq_intc *sub_intc = irq_data->sub_intc;
308 unsigned long src;
309 unsigned long msk;
310 unsigned int n;
311 unsigned int offset;
312
313 /* we're using individual domains for the non-dt case
314 * and one big domain for the dt case where the subintc
315 * starts at hwirq number 32.
316 */
317 offset = (intc->domain->of_node) ? 32 : 0;
318
319 chained_irq_enter(chip, desc);
320
321 src = __raw_readl(sub_intc->reg_pending);
322 msk = __raw_readl(sub_intc->reg_mask);
323
324 src &= ~msk;
325 src &= irq_data->sub_bits;
326
327 while (src) {
328 n = __ffs(src);
329 src &= ~(1 << n);
330 irq = irq_find_mapping(sub_intc->domain, offset + n);
331 generic_handle_irq(irq);
332 }
333
334 chained_irq_exit(chip, desc);
335 }
336
s3c24xx_handle_intc(struct s3c_irq_intc * intc,struct pt_regs * regs,int intc_offset)337 static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
338 struct pt_regs *regs, int intc_offset)
339 {
340 int pnd;
341 int offset;
342
343 pnd = __raw_readl(intc->reg_intpnd);
344 if (!pnd)
345 return false;
346
347 /* non-dt machines use individual domains */
348 if (!intc->domain->of_node)
349 intc_offset = 0;
350
351 /* We have a problem that the INTOFFSET register does not always
352 * show one interrupt. Occasionally we get two interrupts through
353 * the prioritiser, and this causes the INTOFFSET register to show
354 * what looks like the logical-or of the two interrupt numbers.
355 *
356 * Thanks to Klaus, Shannon, et al for helping to debug this problem
357 */
358 offset = __raw_readl(intc->reg_intpnd + 4);
359
360 /* Find the bit manually, when the offset is wrong.
361 * The pending register only ever contains the one bit of the next
362 * interrupt to handle.
363 */
364 if (!(pnd & (1 << offset)))
365 offset = __ffs(pnd);
366
367 handle_domain_irq(intc->domain, intc_offset + offset, regs);
368 return true;
369 }
370
s3c24xx_handle_irq(struct pt_regs * regs)371 asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs)
372 {
373 do {
374 if (likely(s3c_intc[0]))
375 if (s3c24xx_handle_intc(s3c_intc[0], regs, 0))
376 continue;
377
378 if (s3c_intc[2])
379 if (s3c24xx_handle_intc(s3c_intc[2], regs, 64))
380 continue;
381
382 break;
383 } while (1);
384 }
385
386 #ifdef CONFIG_FIQ
387 /**
388 * s3c24xx_set_fiq - set the FIQ routing
389 * @irq: IRQ number to route to FIQ on processor.
390 * @on: Whether to route @irq to the FIQ, or to remove the FIQ routing.
391 *
392 * Change the state of the IRQ to FIQ routing depending on @irq and @on. If
393 * @on is true, the @irq is checked to see if it can be routed and the
394 * interrupt controller updated to route the IRQ. If @on is false, the FIQ
395 * routing is cleared, regardless of which @irq is specified.
396 */
s3c24xx_set_fiq(unsigned int irq,bool on)397 int s3c24xx_set_fiq(unsigned int irq, bool on)
398 {
399 u32 intmod;
400 unsigned offs;
401
402 if (on) {
403 offs = irq - FIQ_START;
404 if (offs > 31)
405 return -EINVAL;
406
407 intmod = 1 << offs;
408 } else {
409 intmod = 0;
410 }
411
412 __raw_writel(intmod, S3C2410_INTMOD);
413 return 0;
414 }
415
416 EXPORT_SYMBOL_GPL(s3c24xx_set_fiq);
417 #endif
418
s3c24xx_irq_map(struct irq_domain * h,unsigned int virq,irq_hw_number_t hw)419 static int s3c24xx_irq_map(struct irq_domain *h, unsigned int virq,
420 irq_hw_number_t hw)
421 {
422 struct s3c_irq_intc *intc = h->host_data;
423 struct s3c_irq_data *irq_data = &intc->irqs[hw];
424 struct s3c_irq_intc *parent_intc;
425 struct s3c_irq_data *parent_irq_data;
426 unsigned int irqno;
427
428 /* attach controller pointer to irq_data */
429 irq_data->intc = intc;
430 irq_data->offset = hw;
431
432 parent_intc = intc->parent;
433
434 /* set handler and flags */
435 switch (irq_data->type) {
436 case S3C_IRQTYPE_NONE:
437 return 0;
438 case S3C_IRQTYPE_EINT:
439 /* On the S3C2412, the EINT0to3 have a parent irq
440 * but need the s3c_irq_eint0t4 chip
441 */
442 if (parent_intc && (!soc_is_s3c2412() || hw >= 4))
443 irq_set_chip_and_handler(virq, &s3c_irqext_chip,
444 handle_edge_irq);
445 else
446 irq_set_chip_and_handler(virq, &s3c_irq_eint0t4,
447 handle_edge_irq);
448 break;
449 case S3C_IRQTYPE_EDGE:
450 if (parent_intc || intc->reg_pending == S3C2416_SRCPND2)
451 irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
452 handle_edge_irq);
453 else
454 irq_set_chip_and_handler(virq, &s3c_irq_chip,
455 handle_edge_irq);
456 break;
457 case S3C_IRQTYPE_LEVEL:
458 if (parent_intc)
459 irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
460 handle_level_irq);
461 else
462 irq_set_chip_and_handler(virq, &s3c_irq_chip,
463 handle_level_irq);
464 break;
465 default:
466 pr_err("irq-s3c24xx: unsupported irqtype %d\n", irq_data->type);
467 return -EINVAL;
468 }
469
470 irq_set_chip_data(virq, irq_data);
471
472 set_irq_flags(virq, IRQF_VALID);
473
474 if (parent_intc && irq_data->type != S3C_IRQTYPE_NONE) {
475 if (irq_data->parent_irq > 31) {
476 pr_err("irq-s3c24xx: parent irq %lu is out of range\n",
477 irq_data->parent_irq);
478 goto err;
479 }
480
481 parent_irq_data = &parent_intc->irqs[irq_data->parent_irq];
482 parent_irq_data->sub_intc = intc;
483 parent_irq_data->sub_bits |= (1UL << hw);
484
485 /* attach the demuxer to the parent irq */
486 irqno = irq_find_mapping(parent_intc->domain,
487 irq_data->parent_irq);
488 if (!irqno) {
489 pr_err("irq-s3c24xx: could not find mapping for parent irq %lu\n",
490 irq_data->parent_irq);
491 goto err;
492 }
493 irq_set_chained_handler(irqno, s3c_irq_demux);
494 }
495
496 return 0;
497
498 err:
499 set_irq_flags(virq, 0);
500
501 /* the only error can result from bad mapping data*/
502 return -EINVAL;
503 }
504
505 static struct irq_domain_ops s3c24xx_irq_ops = {
506 .map = s3c24xx_irq_map,
507 .xlate = irq_domain_xlate_twocell,
508 };
509
s3c24xx_clear_intc(struct s3c_irq_intc * intc)510 static void s3c24xx_clear_intc(struct s3c_irq_intc *intc)
511 {
512 void __iomem *reg_source;
513 unsigned long pend;
514 unsigned long last;
515 int i;
516
517 /* if intpnd is set, read the next pending irq from there */
518 reg_source = intc->reg_intpnd ? intc->reg_intpnd : intc->reg_pending;
519
520 last = 0;
521 for (i = 0; i < 4; i++) {
522 pend = __raw_readl(reg_source);
523
524 if (pend == 0 || pend == last)
525 break;
526
527 __raw_writel(pend, intc->reg_pending);
528 if (intc->reg_intpnd)
529 __raw_writel(pend, intc->reg_intpnd);
530
531 pr_info("irq: clearing pending status %08x\n", (int)pend);
532 last = pend;
533 }
534 }
535
s3c24xx_init_intc(struct device_node * np,struct s3c_irq_data * irq_data,struct s3c_irq_intc * parent,unsigned long address)536 static struct s3c_irq_intc * __init s3c24xx_init_intc(struct device_node *np,
537 struct s3c_irq_data *irq_data,
538 struct s3c_irq_intc *parent,
539 unsigned long address)
540 {
541 struct s3c_irq_intc *intc;
542 void __iomem *base = (void *)0xf6000000; /* static mapping */
543 int irq_num;
544 int irq_start;
545 int ret;
546
547 intc = kzalloc(sizeof(struct s3c_irq_intc), GFP_KERNEL);
548 if (!intc)
549 return ERR_PTR(-ENOMEM);
550
551 intc->irqs = irq_data;
552
553 if (parent)
554 intc->parent = parent;
555
556 /* select the correct data for the controller.
557 * Need to hard code the irq num start and offset
558 * to preserve the static mapping for now
559 */
560 switch (address) {
561 case 0x4a000000:
562 pr_debug("irq: found main intc\n");
563 intc->reg_pending = base;
564 intc->reg_mask = base + 0x08;
565 intc->reg_intpnd = base + 0x10;
566 irq_num = 32;
567 irq_start = S3C2410_IRQ(0);
568 break;
569 case 0x4a000018:
570 pr_debug("irq: found subintc\n");
571 intc->reg_pending = base + 0x18;
572 intc->reg_mask = base + 0x1c;
573 irq_num = 29;
574 irq_start = S3C2410_IRQSUB(0);
575 break;
576 case 0x4a000040:
577 pr_debug("irq: found intc2\n");
578 intc->reg_pending = base + 0x40;
579 intc->reg_mask = base + 0x48;
580 intc->reg_intpnd = base + 0x50;
581 irq_num = 8;
582 irq_start = S3C2416_IRQ(0);
583 break;
584 case 0x560000a4:
585 pr_debug("irq: found eintc\n");
586 base = (void *)0xfd000000;
587
588 intc->reg_mask = base + 0xa4;
589 intc->reg_pending = base + 0xa8;
590 irq_num = 24;
591 irq_start = S3C2410_IRQ(32);
592 break;
593 default:
594 pr_err("irq: unsupported controller address\n");
595 ret = -EINVAL;
596 goto err;
597 }
598
599 /* now that all the data is complete, init the irq-domain */
600 s3c24xx_clear_intc(intc);
601 intc->domain = irq_domain_add_legacy(np, irq_num, irq_start,
602 0, &s3c24xx_irq_ops,
603 intc);
604 if (!intc->domain) {
605 pr_err("irq: could not create irq-domain\n");
606 ret = -EINVAL;
607 goto err;
608 }
609
610 set_handle_irq(s3c24xx_handle_irq);
611
612 return intc;
613
614 err:
615 kfree(intc);
616 return ERR_PTR(ret);
617 }
618
619 static struct s3c_irq_data init_eint[32] = {
620 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
621 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
622 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
623 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
624 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT4 */
625 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT5 */
626 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT6 */
627 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT7 */
628 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT8 */
629 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT9 */
630 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT10 */
631 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT11 */
632 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT12 */
633 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT13 */
634 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT14 */
635 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT15 */
636 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT16 */
637 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT17 */
638 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT18 */
639 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT19 */
640 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT20 */
641 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT21 */
642 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT22 */
643 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT23 */
644 };
645
646 #ifdef CONFIG_CPU_S3C2410
647 static struct s3c_irq_data init_s3c2410base[32] = {
648 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
649 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
650 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
651 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
652 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
653 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
654 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
655 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
656 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
657 { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
658 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
659 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
660 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
661 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
662 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
663 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
664 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
665 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
666 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
667 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
668 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
669 { .type = S3C_IRQTYPE_EDGE, }, /* SDI */
670 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
671 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
672 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
673 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
674 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
675 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
676 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
677 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
678 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
679 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
680 };
681
682 static struct s3c_irq_data init_s3c2410subint[32] = {
683 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
684 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
685 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
686 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
687 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
688 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
689 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
690 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
691 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
692 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
693 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
694 };
695
s3c2410_init_irq(void)696 void __init s3c2410_init_irq(void)
697 {
698 #ifdef CONFIG_FIQ
699 init_FIQ(FIQ_START);
700 #endif
701
702 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2410base[0], NULL,
703 0x4a000000);
704 if (IS_ERR(s3c_intc[0])) {
705 pr_err("irq: could not create main interrupt controller\n");
706 return;
707 }
708
709 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2410subint[0],
710 s3c_intc[0], 0x4a000018);
711 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
712 }
713 #endif
714
715 #ifdef CONFIG_CPU_S3C2412
716 static struct s3c_irq_data init_s3c2412base[32] = {
717 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT0 */
718 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT1 */
719 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT2 */
720 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT3 */
721 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
722 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
723 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
724 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
725 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
726 { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
727 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
728 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
729 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
730 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
731 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
732 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
733 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
734 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
735 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
736 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
737 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
738 { .type = S3C_IRQTYPE_LEVEL, }, /* SDI/CF */
739 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
740 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
741 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
742 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
743 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
744 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
745 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
746 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
747 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
748 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
749 };
750
751 static struct s3c_irq_data init_s3c2412eint[32] = {
752 { .type = S3C_IRQTYPE_EINT, .parent_irq = 0 }, /* EINT0 */
753 { .type = S3C_IRQTYPE_EINT, .parent_irq = 1 }, /* EINT1 */
754 { .type = S3C_IRQTYPE_EINT, .parent_irq = 2 }, /* EINT2 */
755 { .type = S3C_IRQTYPE_EINT, .parent_irq = 3 }, /* EINT3 */
756 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT4 */
757 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT5 */
758 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT6 */
759 { .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT7 */
760 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT8 */
761 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT9 */
762 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT10 */
763 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT11 */
764 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT12 */
765 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT13 */
766 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT14 */
767 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT15 */
768 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT16 */
769 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT17 */
770 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT18 */
771 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT19 */
772 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT20 */
773 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT21 */
774 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT22 */
775 { .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT23 */
776 };
777
778 static struct s3c_irq_data init_s3c2412subint[32] = {
779 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
780 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
781 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
782 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
783 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
784 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
785 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
786 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
787 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
788 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
789 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
790 { .type = S3C_IRQTYPE_NONE, },
791 { .type = S3C_IRQTYPE_NONE, },
792 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* SDI */
793 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* CF */
794 };
795
s3c2412_init_irq(void)796 void __init s3c2412_init_irq(void)
797 {
798 pr_info("S3C2412: IRQ Support\n");
799
800 #ifdef CONFIG_FIQ
801 init_FIQ(FIQ_START);
802 #endif
803
804 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2412base[0], NULL,
805 0x4a000000);
806 if (IS_ERR(s3c_intc[0])) {
807 pr_err("irq: could not create main interrupt controller\n");
808 return;
809 }
810
811 s3c24xx_init_intc(NULL, &init_s3c2412eint[0], s3c_intc[0], 0x560000a4);
812 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2412subint[0],
813 s3c_intc[0], 0x4a000018);
814 }
815 #endif
816
817 #ifdef CONFIG_CPU_S3C2416
818 static struct s3c_irq_data init_s3c2416base[32] = {
819 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
820 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
821 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
822 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
823 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
824 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
825 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
826 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
827 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
828 { .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
829 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
830 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
831 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
832 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
833 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
834 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
835 { .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
836 { .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
837 { .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
838 { .type = S3C_IRQTYPE_NONE, }, /* reserved */
839 { .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
840 { .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
841 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
842 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
843 { .type = S3C_IRQTYPE_EDGE, }, /* NAND */
844 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
845 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
846 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
847 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
848 { .type = S3C_IRQTYPE_NONE, },
849 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
850 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
851 };
852
853 static struct s3c_irq_data init_s3c2416subint[32] = {
854 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
855 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
856 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
857 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
858 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
859 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
860 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
861 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
862 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
863 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
864 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
865 { .type = S3C_IRQTYPE_NONE }, /* reserved */
866 { .type = S3C_IRQTYPE_NONE }, /* reserved */
867 { .type = S3C_IRQTYPE_NONE }, /* reserved */
868 { .type = S3C_IRQTYPE_NONE }, /* reserved */
869 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
870 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
871 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
872 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
873 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
874 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
875 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
876 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
877 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
878 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
879 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
880 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
881 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
882 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
883 };
884
885 static struct s3c_irq_data init_s3c2416_second[32] = {
886 { .type = S3C_IRQTYPE_EDGE }, /* 2D */
887 { .type = S3C_IRQTYPE_NONE }, /* reserved */
888 { .type = S3C_IRQTYPE_NONE }, /* reserved */
889 { .type = S3C_IRQTYPE_NONE }, /* reserved */
890 { .type = S3C_IRQTYPE_EDGE }, /* PCM0 */
891 { .type = S3C_IRQTYPE_NONE }, /* reserved */
892 { .type = S3C_IRQTYPE_EDGE }, /* I2S0 */
893 };
894
s3c2416_init_irq(void)895 void __init s3c2416_init_irq(void)
896 {
897 pr_info("S3C2416: IRQ Support\n");
898
899 #ifdef CONFIG_FIQ
900 init_FIQ(FIQ_START);
901 #endif
902
903 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2416base[0], NULL,
904 0x4a000000);
905 if (IS_ERR(s3c_intc[0])) {
906 pr_err("irq: could not create main interrupt controller\n");
907 return;
908 }
909
910 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
911 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2416subint[0],
912 s3c_intc[0], 0x4a000018);
913
914 s3c_intc[2] = s3c24xx_init_intc(NULL, &init_s3c2416_second[0],
915 NULL, 0x4a000040);
916 }
917
918 #endif
919
920 #ifdef CONFIG_CPU_S3C2440
921 static struct s3c_irq_data init_s3c2440base[32] = {
922 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
923 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
924 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
925 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
926 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
927 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
928 { .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
929 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
930 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
931 { .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
932 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
933 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
934 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
935 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
936 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
937 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
938 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
939 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
940 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
941 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
942 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
943 { .type = S3C_IRQTYPE_EDGE, }, /* SDI */
944 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
945 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
946 { .type = S3C_IRQTYPE_LEVEL, }, /* NFCON */
947 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
948 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
949 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
950 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
951 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
952 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
953 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
954 };
955
956 static struct s3c_irq_data init_s3c2440subint[32] = {
957 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
958 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
959 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
960 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
961 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
962 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
963 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
964 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
965 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
966 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
967 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
968 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
969 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
970 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
971 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
972 };
973
s3c2440_init_irq(void)974 void __init s3c2440_init_irq(void)
975 {
976 pr_info("S3C2440: IRQ Support\n");
977
978 #ifdef CONFIG_FIQ
979 init_FIQ(FIQ_START);
980 #endif
981
982 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2440base[0], NULL,
983 0x4a000000);
984 if (IS_ERR(s3c_intc[0])) {
985 pr_err("irq: could not create main interrupt controller\n");
986 return;
987 }
988
989 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
990 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2440subint[0],
991 s3c_intc[0], 0x4a000018);
992 }
993 #endif
994
995 #ifdef CONFIG_CPU_S3C2442
996 static struct s3c_irq_data init_s3c2442base[32] = {
997 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
998 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
999 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
1000 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
1001 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
1002 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
1003 { .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
1004 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
1005 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
1006 { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
1007 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
1008 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
1009 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
1010 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
1011 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
1012 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
1013 { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
1014 { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
1015 { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
1016 { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
1017 { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
1018 { .type = S3C_IRQTYPE_EDGE, }, /* SDI */
1019 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
1020 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
1021 { .type = S3C_IRQTYPE_LEVEL, }, /* NFCON */
1022 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
1023 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
1024 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
1025 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
1026 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
1027 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
1028 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
1029 };
1030
1031 static struct s3c_irq_data init_s3c2442subint[32] = {
1032 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
1033 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
1034 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
1035 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
1036 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
1037 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
1038 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
1039 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
1040 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
1041 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
1042 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
1043 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
1044 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
1045 };
1046
s3c2442_init_irq(void)1047 void __init s3c2442_init_irq(void)
1048 {
1049 pr_info("S3C2442: IRQ Support\n");
1050
1051 #ifdef CONFIG_FIQ
1052 init_FIQ(FIQ_START);
1053 #endif
1054
1055 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2442base[0], NULL,
1056 0x4a000000);
1057 if (IS_ERR(s3c_intc[0])) {
1058 pr_err("irq: could not create main interrupt controller\n");
1059 return;
1060 }
1061
1062 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
1063 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2442subint[0],
1064 s3c_intc[0], 0x4a000018);
1065 }
1066 #endif
1067
1068 #ifdef CONFIG_CPU_S3C2443
1069 static struct s3c_irq_data init_s3c2443base[32] = {
1070 { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
1071 { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
1072 { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
1073 { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
1074 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
1075 { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
1076 { .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
1077 { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
1078 { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
1079 { .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
1080 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
1081 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
1082 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
1083 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
1084 { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
1085 { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
1086 { .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
1087 { .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
1088 { .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
1089 { .type = S3C_IRQTYPE_EDGE, }, /* CFON */
1090 { .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
1091 { .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
1092 { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
1093 { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
1094 { .type = S3C_IRQTYPE_EDGE, }, /* NAND */
1095 { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
1096 { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
1097 { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
1098 { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
1099 { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
1100 { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
1101 { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
1102 };
1103
1104
1105 static struct s3c_irq_data init_s3c2443subint[32] = {
1106 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
1107 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
1108 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
1109 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
1110 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
1111 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
1112 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
1113 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
1114 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
1115 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
1116 { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
1117 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
1118 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
1119 { .type = S3C_IRQTYPE_NONE }, /* reserved */
1120 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD1 */
1121 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
1122 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
1123 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
1124 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
1125 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
1126 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
1127 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
1128 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
1129 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
1130 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
1131 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
1132 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
1133 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
1134 { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
1135 };
1136
s3c2443_init_irq(void)1137 void __init s3c2443_init_irq(void)
1138 {
1139 pr_info("S3C2443: IRQ Support\n");
1140
1141 #ifdef CONFIG_FIQ
1142 init_FIQ(FIQ_START);
1143 #endif
1144
1145 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2443base[0], NULL,
1146 0x4a000000);
1147 if (IS_ERR(s3c_intc[0])) {
1148 pr_err("irq: could not create main interrupt controller\n");
1149 return;
1150 }
1151
1152 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
1153 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2443subint[0],
1154 s3c_intc[0], 0x4a000018);
1155 }
1156 #endif
1157
1158 #ifdef CONFIG_OF
s3c24xx_irq_map_of(struct irq_domain * h,unsigned int virq,irq_hw_number_t hw)1159 static int s3c24xx_irq_map_of(struct irq_domain *h, unsigned int virq,
1160 irq_hw_number_t hw)
1161 {
1162 unsigned int ctrl_num = hw / 32;
1163 unsigned int intc_hw = hw % 32;
1164 struct s3c_irq_intc *intc = s3c_intc[ctrl_num];
1165 struct s3c_irq_intc *parent_intc = intc->parent;
1166 struct s3c_irq_data *irq_data = &intc->irqs[intc_hw];
1167
1168 /* attach controller pointer to irq_data */
1169 irq_data->intc = intc;
1170 irq_data->offset = intc_hw;
1171
1172 if (!parent_intc)
1173 irq_set_chip_and_handler(virq, &s3c_irq_chip, handle_edge_irq);
1174 else
1175 irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
1176 handle_edge_irq);
1177
1178 irq_set_chip_data(virq, irq_data);
1179
1180 set_irq_flags(virq, IRQF_VALID);
1181
1182 return 0;
1183 }
1184
1185 /* Translate our of irq notation
1186 * format: <ctrl_num ctrl_irq parent_irq type>
1187 */
s3c24xx_irq_xlate_of(struct irq_domain * d,struct device_node * n,const u32 * intspec,unsigned int intsize,irq_hw_number_t * out_hwirq,unsigned int * out_type)1188 static int s3c24xx_irq_xlate_of(struct irq_domain *d, struct device_node *n,
1189 const u32 *intspec, unsigned int intsize,
1190 irq_hw_number_t *out_hwirq, unsigned int *out_type)
1191 {
1192 struct s3c_irq_intc *intc;
1193 struct s3c_irq_intc *parent_intc;
1194 struct s3c_irq_data *irq_data;
1195 struct s3c_irq_data *parent_irq_data;
1196 int irqno;
1197
1198 if (WARN_ON(intsize < 4))
1199 return -EINVAL;
1200
1201 if (intspec[0] > 2 || !s3c_intc[intspec[0]]) {
1202 pr_err("controller number %d invalid\n", intspec[0]);
1203 return -EINVAL;
1204 }
1205 intc = s3c_intc[intspec[0]];
1206
1207 *out_hwirq = intspec[0] * 32 + intspec[2];
1208 *out_type = intspec[3] & IRQ_TYPE_SENSE_MASK;
1209
1210 parent_intc = intc->parent;
1211 if (parent_intc) {
1212 irq_data = &intc->irqs[intspec[2]];
1213 irq_data->parent_irq = intspec[1];
1214 parent_irq_data = &parent_intc->irqs[irq_data->parent_irq];
1215 parent_irq_data->sub_intc = intc;
1216 parent_irq_data->sub_bits |= (1UL << intspec[2]);
1217
1218 /* parent_intc is always s3c_intc[0], so no offset */
1219 irqno = irq_create_mapping(parent_intc->domain, intspec[1]);
1220 if (irqno < 0) {
1221 pr_err("irq: could not map parent interrupt\n");
1222 return irqno;
1223 }
1224
1225 irq_set_chained_handler(irqno, s3c_irq_demux);
1226 }
1227
1228 return 0;
1229 }
1230
1231 static struct irq_domain_ops s3c24xx_irq_ops_of = {
1232 .map = s3c24xx_irq_map_of,
1233 .xlate = s3c24xx_irq_xlate_of,
1234 };
1235
1236 struct s3c24xx_irq_of_ctrl {
1237 char *name;
1238 unsigned long offset;
1239 struct s3c_irq_intc **handle;
1240 struct s3c_irq_intc **parent;
1241 struct irq_domain_ops *ops;
1242 };
1243
s3c_init_intc_of(struct device_node * np,struct device_node * interrupt_parent,struct s3c24xx_irq_of_ctrl * s3c_ctrl,int num_ctrl)1244 static int __init s3c_init_intc_of(struct device_node *np,
1245 struct device_node *interrupt_parent,
1246 struct s3c24xx_irq_of_ctrl *s3c_ctrl, int num_ctrl)
1247 {
1248 struct s3c_irq_intc *intc;
1249 struct s3c24xx_irq_of_ctrl *ctrl;
1250 struct irq_domain *domain;
1251 void __iomem *reg_base;
1252 int i;
1253
1254 reg_base = of_iomap(np, 0);
1255 if (!reg_base) {
1256 pr_err("irq-s3c24xx: could not map irq registers\n");
1257 return -EINVAL;
1258 }
1259
1260 domain = irq_domain_add_linear(np, num_ctrl * 32,
1261 &s3c24xx_irq_ops_of, NULL);
1262 if (!domain) {
1263 pr_err("irq: could not create irq-domain\n");
1264 return -EINVAL;
1265 }
1266
1267 for (i = 0; i < num_ctrl; i++) {
1268 ctrl = &s3c_ctrl[i];
1269
1270 pr_debug("irq: found controller %s\n", ctrl->name);
1271
1272 intc = kzalloc(sizeof(struct s3c_irq_intc), GFP_KERNEL);
1273 if (!intc)
1274 return -ENOMEM;
1275
1276 intc->domain = domain;
1277 intc->irqs = kzalloc(sizeof(struct s3c_irq_data) * 32,
1278 GFP_KERNEL);
1279 if (!intc->irqs) {
1280 kfree(intc);
1281 return -ENOMEM;
1282 }
1283
1284 if (ctrl->parent) {
1285 intc->reg_pending = reg_base + ctrl->offset;
1286 intc->reg_mask = reg_base + ctrl->offset + 0x4;
1287
1288 if (*(ctrl->parent)) {
1289 intc->parent = *(ctrl->parent);
1290 } else {
1291 pr_warn("irq: parent of %s missing\n",
1292 ctrl->name);
1293 kfree(intc->irqs);
1294 kfree(intc);
1295 continue;
1296 }
1297 } else {
1298 intc->reg_pending = reg_base + ctrl->offset;
1299 intc->reg_mask = reg_base + ctrl->offset + 0x08;
1300 intc->reg_intpnd = reg_base + ctrl->offset + 0x10;
1301 }
1302
1303 s3c24xx_clear_intc(intc);
1304 s3c_intc[i] = intc;
1305 }
1306
1307 set_handle_irq(s3c24xx_handle_irq);
1308
1309 return 0;
1310 }
1311
1312 static struct s3c24xx_irq_of_ctrl s3c2410_ctrl[] = {
1313 {
1314 .name = "intc",
1315 .offset = 0,
1316 }, {
1317 .name = "subintc",
1318 .offset = 0x18,
1319 .parent = &s3c_intc[0],
1320 }
1321 };
1322
s3c2410_init_intc_of(struct device_node * np,struct device_node * interrupt_parent)1323 int __init s3c2410_init_intc_of(struct device_node *np,
1324 struct device_node *interrupt_parent)
1325 {
1326 return s3c_init_intc_of(np, interrupt_parent,
1327 s3c2410_ctrl, ARRAY_SIZE(s3c2410_ctrl));
1328 }
1329 IRQCHIP_DECLARE(s3c2410_irq, "samsung,s3c2410-irq", s3c2410_init_intc_of);
1330
1331 static struct s3c24xx_irq_of_ctrl s3c2416_ctrl[] = {
1332 {
1333 .name = "intc",
1334 .offset = 0,
1335 }, {
1336 .name = "subintc",
1337 .offset = 0x18,
1338 .parent = &s3c_intc[0],
1339 }, {
1340 .name = "intc2",
1341 .offset = 0x40,
1342 }
1343 };
1344
s3c2416_init_intc_of(struct device_node * np,struct device_node * interrupt_parent)1345 int __init s3c2416_init_intc_of(struct device_node *np,
1346 struct device_node *interrupt_parent)
1347 {
1348 return s3c_init_intc_of(np, interrupt_parent,
1349 s3c2416_ctrl, ARRAY_SIZE(s3c2416_ctrl));
1350 }
1351 IRQCHIP_DECLARE(s3c2416_irq, "samsung,s3c2416-irq", s3c2416_init_intc_of);
1352 #endif
1353