diff options
Diffstat (limited to 'drivers/pinctrl/samsung/pinctrl-s3c24xx.c')
-rw-r--r-- | drivers/pinctrl/samsung/pinctrl-s3c24xx.c | 651 |
1 files changed, 651 insertions, 0 deletions
diff --git a/drivers/pinctrl/samsung/pinctrl-s3c24xx.c b/drivers/pinctrl/samsung/pinctrl-s3c24xx.c new file mode 100644 index 000000000000..ad3eaad17001 --- /dev/null +++ b/drivers/pinctrl/samsung/pinctrl-s3c24xx.c | |||
@@ -0,0 +1,651 @@ | |||
1 | /* | ||
2 | * S3C24XX specific support for Samsung pinctrl/gpiolib driver. | ||
3 | * | ||
4 | * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This file contains the SamsungS3C24XX specific information required by the | ||
12 | * Samsung pinctrl/gpiolib driver. It also includes the implementation of | ||
13 | * external gpio and wakeup interrupt support. | ||
14 | */ | ||
15 | |||
16 | #include <linux/module.h> | ||
17 | #include <linux/device.h> | ||
18 | #include <linux/interrupt.h> | ||
19 | #include <linux/irqdomain.h> | ||
20 | #include <linux/irq.h> | ||
21 | #include <linux/of_irq.h> | ||
22 | #include <linux/irqchip/chained_irq.h> | ||
23 | #include <linux/io.h> | ||
24 | #include <linux/slab.h> | ||
25 | #include <linux/err.h> | ||
26 | |||
27 | #include "pinctrl-samsung.h" | ||
28 | |||
29 | #define NUM_EINT 24 | ||
30 | #define NUM_EINT_IRQ 6 | ||
31 | #define EINT_MAX_PER_GROUP 8 | ||
32 | |||
33 | #define EINTPEND_REG 0xa8 | ||
34 | #define EINTMASK_REG 0xa4 | ||
35 | |||
36 | #define EINT_GROUP(i) ((int)((i) / EINT_MAX_PER_GROUP)) | ||
37 | #define EINT_REG(i) ((EINT_GROUP(i) * 4) + 0x88) | ||
38 | #define EINT_OFFS(i) ((i) % EINT_MAX_PER_GROUP * 4) | ||
39 | |||
40 | #define EINT_LEVEL_LOW 0 | ||
41 | #define EINT_LEVEL_HIGH 1 | ||
42 | #define EINT_EDGE_FALLING 2 | ||
43 | #define EINT_EDGE_RISING 4 | ||
44 | #define EINT_EDGE_BOTH 6 | ||
45 | #define EINT_MASK 0xf | ||
46 | |||
47 | static struct samsung_pin_bank_type bank_type_1bit = { | ||
48 | .fld_width = { 1, 1, }, | ||
49 | .reg_offset = { 0x00, 0x04, }, | ||
50 | }; | ||
51 | |||
52 | static struct samsung_pin_bank_type bank_type_2bit = { | ||
53 | .fld_width = { 2, 1, 2, }, | ||
54 | .reg_offset = { 0x00, 0x04, 0x08, }, | ||
55 | }; | ||
56 | |||
57 | #define PIN_BANK_A(pins, reg, id) \ | ||
58 | { \ | ||
59 | .type = &bank_type_1bit, \ | ||
60 | .pctl_offset = reg, \ | ||
61 | .nr_pins = pins, \ | ||
62 | .eint_type = EINT_TYPE_NONE, \ | ||
63 | .name = id \ | ||
64 | } | ||
65 | |||
66 | #define PIN_BANK_2BIT(pins, reg, id) \ | ||
67 | { \ | ||
68 | .type = &bank_type_2bit, \ | ||
69 | .pctl_offset = reg, \ | ||
70 | .nr_pins = pins, \ | ||
71 | .eint_type = EINT_TYPE_NONE, \ | ||
72 | .name = id \ | ||
73 | } | ||
74 | |||
75 | #define PIN_BANK_2BIT_EINTW(pins, reg, id, eoffs, emask)\ | ||
76 | { \ | ||
77 | .type = &bank_type_2bit, \ | ||
78 | .pctl_offset = reg, \ | ||
79 | .nr_pins = pins, \ | ||
80 | .eint_type = EINT_TYPE_WKUP, \ | ||
81 | .eint_func = 2, \ | ||
82 | .eint_mask = emask, \ | ||
83 | .eint_offset = eoffs, \ | ||
84 | .name = id \ | ||
85 | } | ||
86 | |||
87 | /** | ||
88 | * struct s3c24xx_eint_data: EINT common data | ||
89 | * @drvdata: pin controller driver data | ||
90 | * @domains: IRQ domains of particular EINT interrupts | ||
91 | * @parents: mapped parent irqs in the main interrupt controller | ||
92 | */ | ||
93 | struct s3c24xx_eint_data { | ||
94 | struct samsung_pinctrl_drv_data *drvdata; | ||
95 | struct irq_domain *domains[NUM_EINT]; | ||
96 | int parents[NUM_EINT_IRQ]; | ||
97 | }; | ||
98 | |||
99 | /** | ||
100 | * struct s3c24xx_eint_domain_data: per irq-domain data | ||
101 | * @bank: pin bank related to the domain | ||
102 | * @eint_data: common data | ||
103 | * eint0_3_parent_only: live eints 0-3 only in the main intc | ||
104 | */ | ||
105 | struct s3c24xx_eint_domain_data { | ||
106 | struct samsung_pin_bank *bank; | ||
107 | struct s3c24xx_eint_data *eint_data; | ||
108 | bool eint0_3_parent_only; | ||
109 | }; | ||
110 | |||
111 | static int s3c24xx_eint_get_trigger(unsigned int type) | ||
112 | { | ||
113 | switch (type) { | ||
114 | case IRQ_TYPE_EDGE_RISING: | ||
115 | return EINT_EDGE_RISING; | ||
116 | break; | ||
117 | case IRQ_TYPE_EDGE_FALLING: | ||
118 | return EINT_EDGE_FALLING; | ||
119 | break; | ||
120 | case IRQ_TYPE_EDGE_BOTH: | ||
121 | return EINT_EDGE_BOTH; | ||
122 | break; | ||
123 | case IRQ_TYPE_LEVEL_HIGH: | ||
124 | return EINT_LEVEL_HIGH; | ||
125 | break; | ||
126 | case IRQ_TYPE_LEVEL_LOW: | ||
127 | return EINT_LEVEL_LOW; | ||
128 | break; | ||
129 | default: | ||
130 | return -EINVAL; | ||
131 | } | ||
132 | } | ||
133 | |||
134 | static void s3c24xx_eint_set_handler(unsigned int irq, unsigned int type) | ||
135 | { | ||
136 | /* Edge- and level-triggered interrupts need different handlers */ | ||
137 | if (type & IRQ_TYPE_EDGE_BOTH) | ||
138 | __irq_set_handler_locked(irq, handle_edge_irq); | ||
139 | else | ||
140 | __irq_set_handler_locked(irq, handle_level_irq); | ||
141 | } | ||
142 | |||
143 | static void s3c24xx_eint_set_function(struct samsung_pinctrl_drv_data *d, | ||
144 | struct samsung_pin_bank *bank, int pin) | ||
145 | { | ||
146 | struct samsung_pin_bank_type *bank_type = bank->type; | ||
147 | unsigned long flags; | ||
148 | void __iomem *reg; | ||
149 | u8 shift; | ||
150 | u32 mask; | ||
151 | u32 val; | ||
152 | |||
153 | /* Make sure that pin is configured as interrupt */ | ||
154 | reg = d->virt_base + bank->pctl_offset; | ||
155 | shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC]; | ||
156 | mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1; | ||
157 | |||
158 | spin_lock_irqsave(&bank->slock, flags); | ||
159 | |||
160 | val = readl(reg); | ||
161 | val &= ~(mask << shift); | ||
162 | val |= bank->eint_func << shift; | ||
163 | writel(val, reg); | ||
164 | |||
165 | spin_unlock_irqrestore(&bank->slock, flags); | ||
166 | } | ||
167 | |||
168 | static int s3c24xx_eint_type(struct irq_data *data, unsigned int type) | ||
169 | { | ||
170 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
171 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
172 | int index = bank->eint_offset + data->hwirq; | ||
173 | void __iomem *reg; | ||
174 | int trigger; | ||
175 | u8 shift; | ||
176 | u32 val; | ||
177 | |||
178 | trigger = s3c24xx_eint_get_trigger(type); | ||
179 | if (trigger < 0) { | ||
180 | dev_err(d->dev, "unsupported external interrupt type\n"); | ||
181 | return -EINVAL; | ||
182 | } | ||
183 | |||
184 | s3c24xx_eint_set_handler(data->irq, type); | ||
185 | |||
186 | /* Set up interrupt trigger */ | ||
187 | reg = d->virt_base + EINT_REG(index); | ||
188 | shift = EINT_OFFS(index); | ||
189 | |||
190 | val = readl(reg); | ||
191 | val &= ~(EINT_MASK << shift); | ||
192 | val |= trigger << shift; | ||
193 | writel(val, reg); | ||
194 | |||
195 | s3c24xx_eint_set_function(d, bank, data->hwirq); | ||
196 | |||
197 | return 0; | ||
198 | } | ||
199 | |||
200 | /* Handling of EINTs 0-3 on all except S3C2412 and S3C2413 */ | ||
201 | |||
202 | static void s3c2410_eint0_3_ack(struct irq_data *data) | ||
203 | { | ||
204 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
205 | struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data; | ||
206 | struct s3c24xx_eint_data *eint_data = ddata->eint_data; | ||
207 | int parent_irq = eint_data->parents[data->hwirq]; | ||
208 | struct irq_chip *parent_chip = irq_get_chip(parent_irq); | ||
209 | |||
210 | parent_chip->irq_ack(irq_get_irq_data(parent_irq)); | ||
211 | } | ||
212 | |||
213 | static void s3c2410_eint0_3_mask(struct irq_data *data) | ||
214 | { | ||
215 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
216 | struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data; | ||
217 | struct s3c24xx_eint_data *eint_data = ddata->eint_data; | ||
218 | int parent_irq = eint_data->parents[data->hwirq]; | ||
219 | struct irq_chip *parent_chip = irq_get_chip(parent_irq); | ||
220 | |||
221 | parent_chip->irq_mask(irq_get_irq_data(parent_irq)); | ||
222 | } | ||
223 | |||
224 | static void s3c2410_eint0_3_unmask(struct irq_data *data) | ||
225 | { | ||
226 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
227 | struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data; | ||
228 | struct s3c24xx_eint_data *eint_data = ddata->eint_data; | ||
229 | int parent_irq = eint_data->parents[data->hwirq]; | ||
230 | struct irq_chip *parent_chip = irq_get_chip(parent_irq); | ||
231 | |||
232 | parent_chip->irq_unmask(irq_get_irq_data(parent_irq)); | ||
233 | } | ||
234 | |||
235 | static struct irq_chip s3c2410_eint0_3_chip = { | ||
236 | .name = "s3c2410-eint0_3", | ||
237 | .irq_ack = s3c2410_eint0_3_ack, | ||
238 | .irq_mask = s3c2410_eint0_3_mask, | ||
239 | .irq_unmask = s3c2410_eint0_3_unmask, | ||
240 | .irq_set_type = s3c24xx_eint_type, | ||
241 | }; | ||
242 | |||
243 | static void s3c2410_demux_eint0_3(unsigned int irq, struct irq_desc *desc) | ||
244 | { | ||
245 | struct irq_data *data = irq_desc_get_irq_data(desc); | ||
246 | struct s3c24xx_eint_data *eint_data = irq_get_handler_data(irq); | ||
247 | unsigned int virq; | ||
248 | |||
249 | /* the first 4 eints have a simple 1 to 1 mapping */ | ||
250 | virq = irq_linear_revmap(eint_data->domains[data->hwirq], data->hwirq); | ||
251 | /* Something must be really wrong if an unmapped EINT is unmasked */ | ||
252 | BUG_ON(!virq); | ||
253 | |||
254 | generic_handle_irq(virq); | ||
255 | } | ||
256 | |||
257 | /* Handling of EINTs 0-3 on S3C2412 and S3C2413 */ | ||
258 | |||
259 | static void s3c2412_eint0_3_ack(struct irq_data *data) | ||
260 | { | ||
261 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
262 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
263 | |||
264 | unsigned long bitval = 1UL << data->hwirq; | ||
265 | writel(bitval, d->virt_base + EINTPEND_REG); | ||
266 | } | ||
267 | |||
268 | static void s3c2412_eint0_3_mask(struct irq_data *data) | ||
269 | { | ||
270 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
271 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
272 | unsigned long mask; | ||
273 | |||
274 | mask = readl(d->virt_base + EINTMASK_REG); | ||
275 | mask |= (1UL << data->hwirq); | ||
276 | writel(mask, d->virt_base + EINTMASK_REG); | ||
277 | } | ||
278 | |||
279 | static void s3c2412_eint0_3_unmask(struct irq_data *data) | ||
280 | { | ||
281 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
282 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
283 | unsigned long mask; | ||
284 | |||
285 | mask = readl(d->virt_base + EINTMASK_REG); | ||
286 | mask &= ~(1UL << data->hwirq); | ||
287 | writel(mask, d->virt_base + EINTMASK_REG); | ||
288 | } | ||
289 | |||
290 | static struct irq_chip s3c2412_eint0_3_chip = { | ||
291 | .name = "s3c2412-eint0_3", | ||
292 | .irq_ack = s3c2412_eint0_3_ack, | ||
293 | .irq_mask = s3c2412_eint0_3_mask, | ||
294 | .irq_unmask = s3c2412_eint0_3_unmask, | ||
295 | .irq_set_type = s3c24xx_eint_type, | ||
296 | }; | ||
297 | |||
298 | static void s3c2412_demux_eint0_3(unsigned int irq, struct irq_desc *desc) | ||
299 | { | ||
300 | struct irq_chip *chip = irq_get_chip(irq); | ||
301 | struct irq_data *data = irq_desc_get_irq_data(desc); | ||
302 | struct s3c24xx_eint_data *eint_data = irq_get_handler_data(irq); | ||
303 | unsigned int virq; | ||
304 | |||
305 | chained_irq_enter(chip, desc); | ||
306 | |||
307 | /* the first 4 eints have a simple 1 to 1 mapping */ | ||
308 | virq = irq_linear_revmap(eint_data->domains[data->hwirq], data->hwirq); | ||
309 | /* Something must be really wrong if an unmapped EINT is unmasked */ | ||
310 | BUG_ON(!virq); | ||
311 | |||
312 | generic_handle_irq(virq); | ||
313 | |||
314 | chained_irq_exit(chip, desc); | ||
315 | } | ||
316 | |||
317 | /* Handling of all other eints */ | ||
318 | |||
319 | static void s3c24xx_eint_ack(struct irq_data *data) | ||
320 | { | ||
321 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
322 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
323 | unsigned char index = bank->eint_offset + data->hwirq; | ||
324 | |||
325 | writel(1UL << index, d->virt_base + EINTPEND_REG); | ||
326 | } | ||
327 | |||
328 | static void s3c24xx_eint_mask(struct irq_data *data) | ||
329 | { | ||
330 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
331 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
332 | unsigned char index = bank->eint_offset + data->hwirq; | ||
333 | unsigned long mask; | ||
334 | |||
335 | mask = readl(d->virt_base + EINTMASK_REG); | ||
336 | mask |= (1UL << index); | ||
337 | writel(mask, d->virt_base + EINTMASK_REG); | ||
338 | } | ||
339 | |||
340 | static void s3c24xx_eint_unmask(struct irq_data *data) | ||
341 | { | ||
342 | struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data); | ||
343 | struct samsung_pinctrl_drv_data *d = bank->drvdata; | ||
344 | unsigned char index = bank->eint_offset + data->hwirq; | ||
345 | unsigned long mask; | ||
346 | |||
347 | mask = readl(d->virt_base + EINTMASK_REG); | ||
348 | mask &= ~(1UL << index); | ||
349 | writel(mask, d->virt_base + EINTMASK_REG); | ||
350 | } | ||
351 | |||
352 | static struct irq_chip s3c24xx_eint_chip = { | ||
353 | .name = "s3c-eint", | ||
354 | .irq_ack = s3c24xx_eint_ack, | ||
355 | .irq_mask = s3c24xx_eint_mask, | ||
356 | .irq_unmask = s3c24xx_eint_unmask, | ||
357 | .irq_set_type = s3c24xx_eint_type, | ||
358 | }; | ||
359 | |||
360 | static inline void s3c24xx_demux_eint(unsigned int irq, struct irq_desc *desc, | ||
361 | u32 offset, u32 range) | ||
362 | { | ||
363 | struct irq_chip *chip = irq_get_chip(irq); | ||
364 | struct s3c24xx_eint_data *data = irq_get_handler_data(irq); | ||
365 | struct samsung_pinctrl_drv_data *d = data->drvdata; | ||
366 | unsigned int pend, mask; | ||
367 | |||
368 | chained_irq_enter(chip, desc); | ||
369 | |||
370 | pend = readl(d->virt_base + EINTPEND_REG); | ||
371 | mask = readl(d->virt_base + EINTMASK_REG); | ||
372 | |||
373 | pend &= ~mask; | ||
374 | pend &= range; | ||
375 | |||
376 | while (pend) { | ||
377 | unsigned int virq; | ||
378 | |||
379 | irq = __ffs(pend); | ||
380 | pend &= ~(1 << irq); | ||
381 | virq = irq_linear_revmap(data->domains[irq], irq - offset); | ||
382 | /* Something is really wrong if an unmapped EINT is unmasked */ | ||
383 | BUG_ON(!virq); | ||
384 | |||
385 | generic_handle_irq(virq); | ||
386 | } | ||
387 | |||
388 | chained_irq_exit(chip, desc); | ||
389 | } | ||
390 | |||
391 | static void s3c24xx_demux_eint4_7(unsigned int irq, struct irq_desc *desc) | ||
392 | { | ||
393 | s3c24xx_demux_eint(irq, desc, 0, 0xf0); | ||
394 | } | ||
395 | |||
396 | static void s3c24xx_demux_eint8_23(unsigned int irq, struct irq_desc *desc) | ||
397 | { | ||
398 | s3c24xx_demux_eint(irq, desc, 8, 0xffff00); | ||
399 | } | ||
400 | |||
401 | static irq_flow_handler_t s3c2410_eint_handlers[NUM_EINT_IRQ] = { | ||
402 | s3c2410_demux_eint0_3, | ||
403 | s3c2410_demux_eint0_3, | ||
404 | s3c2410_demux_eint0_3, | ||
405 | s3c2410_demux_eint0_3, | ||
406 | s3c24xx_demux_eint4_7, | ||
407 | s3c24xx_demux_eint8_23, | ||
408 | }; | ||
409 | |||
410 | static irq_flow_handler_t s3c2412_eint_handlers[NUM_EINT_IRQ] = { | ||
411 | s3c2412_demux_eint0_3, | ||
412 | s3c2412_demux_eint0_3, | ||
413 | s3c2412_demux_eint0_3, | ||
414 | s3c2412_demux_eint0_3, | ||
415 | s3c24xx_demux_eint4_7, | ||
416 | s3c24xx_demux_eint8_23, | ||
417 | }; | ||
418 | |||
419 | static int s3c24xx_gpf_irq_map(struct irq_domain *h, unsigned int virq, | ||
420 | irq_hw_number_t hw) | ||
421 | { | ||
422 | struct s3c24xx_eint_domain_data *ddata = h->host_data; | ||
423 | struct samsung_pin_bank *bank = ddata->bank; | ||
424 | |||
425 | if (!(bank->eint_mask & (1 << (bank->eint_offset + hw)))) | ||
426 | return -EINVAL; | ||
427 | |||
428 | if (hw <= 3) { | ||
429 | if (ddata->eint0_3_parent_only) | ||
430 | irq_set_chip_and_handler(virq, &s3c2410_eint0_3_chip, | ||
431 | handle_edge_irq); | ||
432 | else | ||
433 | irq_set_chip_and_handler(virq, &s3c2412_eint0_3_chip, | ||
434 | handle_edge_irq); | ||
435 | } else { | ||
436 | irq_set_chip_and_handler(virq, &s3c24xx_eint_chip, | ||
437 | handle_edge_irq); | ||
438 | } | ||
439 | irq_set_chip_data(virq, bank); | ||
440 | set_irq_flags(virq, IRQF_VALID); | ||
441 | return 0; | ||
442 | } | ||
443 | |||
444 | static const struct irq_domain_ops s3c24xx_gpf_irq_ops = { | ||
445 | .map = s3c24xx_gpf_irq_map, | ||
446 | .xlate = irq_domain_xlate_twocell, | ||
447 | }; | ||
448 | |||
449 | static int s3c24xx_gpg_irq_map(struct irq_domain *h, unsigned int virq, | ||
450 | irq_hw_number_t hw) | ||
451 | { | ||
452 | struct s3c24xx_eint_domain_data *ddata = h->host_data; | ||
453 | struct samsung_pin_bank *bank = ddata->bank; | ||
454 | |||
455 | if (!(bank->eint_mask & (1 << (bank->eint_offset + hw)))) | ||
456 | return -EINVAL; | ||
457 | |||
458 | irq_set_chip_and_handler(virq, &s3c24xx_eint_chip, handle_edge_irq); | ||
459 | irq_set_chip_data(virq, bank); | ||
460 | set_irq_flags(virq, IRQF_VALID); | ||
461 | return 0; | ||
462 | } | ||
463 | |||
464 | static const struct irq_domain_ops s3c24xx_gpg_irq_ops = { | ||
465 | .map = s3c24xx_gpg_irq_map, | ||
466 | .xlate = irq_domain_xlate_twocell, | ||
467 | }; | ||
468 | |||
469 | static const struct of_device_id s3c24xx_eint_irq_ids[] = { | ||
470 | { .compatible = "samsung,s3c2410-wakeup-eint", .data = (void *)1 }, | ||
471 | { .compatible = "samsung,s3c2412-wakeup-eint", .data = (void *)0 }, | ||
472 | { } | ||
473 | }; | ||
474 | |||
475 | static int s3c24xx_eint_init(struct samsung_pinctrl_drv_data *d) | ||
476 | { | ||
477 | struct device *dev = d->dev; | ||
478 | const struct of_device_id *match; | ||
479 | struct device_node *eint_np = NULL; | ||
480 | struct device_node *np; | ||
481 | struct samsung_pin_bank *bank; | ||
482 | struct s3c24xx_eint_data *eint_data; | ||
483 | const struct irq_domain_ops *ops; | ||
484 | unsigned int i; | ||
485 | bool eint0_3_parent_only; | ||
486 | irq_flow_handler_t *handlers; | ||
487 | |||
488 | for_each_child_of_node(dev->of_node, np) { | ||
489 | match = of_match_node(s3c24xx_eint_irq_ids, np); | ||
490 | if (match) { | ||
491 | eint_np = np; | ||
492 | eint0_3_parent_only = (bool)match->data; | ||
493 | break; | ||
494 | } | ||
495 | } | ||
496 | if (!eint_np) | ||
497 | return -ENODEV; | ||
498 | |||
499 | eint_data = devm_kzalloc(dev, sizeof(*eint_data), GFP_KERNEL); | ||
500 | if (!eint_data) | ||
501 | return -ENOMEM; | ||
502 | |||
503 | eint_data->drvdata = d; | ||
504 | |||
505 | handlers = eint0_3_parent_only ? s3c2410_eint_handlers | ||
506 | : s3c2412_eint_handlers; | ||
507 | for (i = 0; i < NUM_EINT_IRQ; ++i) { | ||
508 | unsigned int irq; | ||
509 | |||
510 | irq = irq_of_parse_and_map(eint_np, i); | ||
511 | if (!irq) { | ||
512 | dev_err(dev, "failed to get wakeup EINT IRQ %d\n", i); | ||
513 | return -ENXIO; | ||
514 | } | ||
515 | |||
516 | eint_data->parents[i] = irq; | ||
517 | irq_set_chained_handler(irq, handlers[i]); | ||
518 | irq_set_handler_data(irq, eint_data); | ||
519 | } | ||
520 | |||
521 | bank = d->ctrl->pin_banks; | ||
522 | for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) { | ||
523 | struct s3c24xx_eint_domain_data *ddata; | ||
524 | unsigned int mask; | ||
525 | unsigned int irq; | ||
526 | unsigned int pin; | ||
527 | |||
528 | if (bank->eint_type != EINT_TYPE_WKUP) | ||
529 | continue; | ||
530 | |||
531 | ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); | ||
532 | if (!ddata) | ||
533 | return -ENOMEM; | ||
534 | |||
535 | ddata->bank = bank; | ||
536 | ddata->eint_data = eint_data; | ||
537 | ddata->eint0_3_parent_only = eint0_3_parent_only; | ||
538 | |||
539 | ops = (bank->eint_offset == 0) ? &s3c24xx_gpf_irq_ops | ||
540 | : &s3c24xx_gpg_irq_ops; | ||
541 | |||
542 | bank->irq_domain = irq_domain_add_linear(bank->of_node, | ||
543 | bank->nr_pins, ops, ddata); | ||
544 | if (!bank->irq_domain) { | ||
545 | dev_err(dev, "wkup irq domain add failed\n"); | ||
546 | return -ENXIO; | ||
547 | } | ||
548 | |||
549 | irq = bank->eint_offset; | ||
550 | mask = bank->eint_mask; | ||
551 | for (pin = 0; mask; ++pin, mask >>= 1) { | ||
552 | if (irq >= NUM_EINT) | ||
553 | break; | ||
554 | if (!(mask & 1)) | ||
555 | continue; | ||
556 | eint_data->domains[irq] = bank->irq_domain; | ||
557 | ++irq; | ||
558 | } | ||
559 | } | ||
560 | |||
561 | return 0; | ||
562 | } | ||
563 | |||
564 | static struct samsung_pin_bank s3c2412_pin_banks[] = { | ||
565 | PIN_BANK_A(23, 0x000, "gpa"), | ||
566 | PIN_BANK_2BIT(11, 0x010, "gpb"), | ||
567 | PIN_BANK_2BIT(16, 0x020, "gpc"), | ||
568 | PIN_BANK_2BIT(16, 0x030, "gpd"), | ||
569 | PIN_BANK_2BIT(16, 0x040, "gpe"), | ||
570 | PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff), | ||
571 | PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00), | ||
572 | PIN_BANK_2BIT(11, 0x070, "gph"), | ||
573 | PIN_BANK_2BIT(13, 0x080, "gpj"), | ||
574 | }; | ||
575 | |||
576 | struct samsung_pin_ctrl s3c2412_pin_ctrl[] = { | ||
577 | { | ||
578 | .pin_banks = s3c2412_pin_banks, | ||
579 | .nr_banks = ARRAY_SIZE(s3c2412_pin_banks), | ||
580 | .eint_wkup_init = s3c24xx_eint_init, | ||
581 | .label = "S3C2412-GPIO", | ||
582 | }, | ||
583 | }; | ||
584 | |||
585 | static struct samsung_pin_bank s3c2416_pin_banks[] = { | ||
586 | PIN_BANK_A(27, 0x000, "gpa"), | ||
587 | PIN_BANK_2BIT(11, 0x010, "gpb"), | ||
588 | PIN_BANK_2BIT(16, 0x020, "gpc"), | ||
589 | PIN_BANK_2BIT(16, 0x030, "gpd"), | ||
590 | PIN_BANK_2BIT(16, 0x040, "gpe"), | ||
591 | PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff), | ||
592 | PIN_BANK_2BIT_EINTW(8, 0x060, "gpg", 8, 0xff00), | ||
593 | PIN_BANK_2BIT(15, 0x070, "gph"), | ||
594 | PIN_BANK_2BIT(16, 0x0e0, "gpk"), | ||
595 | PIN_BANK_2BIT(14, 0x0f0, "gpl"), | ||
596 | PIN_BANK_2BIT(2, 0x100, "gpm"), | ||
597 | }; | ||
598 | |||
599 | struct samsung_pin_ctrl s3c2416_pin_ctrl[] = { | ||
600 | { | ||
601 | .pin_banks = s3c2416_pin_banks, | ||
602 | .nr_banks = ARRAY_SIZE(s3c2416_pin_banks), | ||
603 | .eint_wkup_init = s3c24xx_eint_init, | ||
604 | .label = "S3C2416-GPIO", | ||
605 | }, | ||
606 | }; | ||
607 | |||
608 | static struct samsung_pin_bank s3c2440_pin_banks[] = { | ||
609 | PIN_BANK_A(25, 0x000, "gpa"), | ||
610 | PIN_BANK_2BIT(11, 0x010, "gpb"), | ||
611 | PIN_BANK_2BIT(16, 0x020, "gpc"), | ||
612 | PIN_BANK_2BIT(16, 0x030, "gpd"), | ||
613 | PIN_BANK_2BIT(16, 0x040, "gpe"), | ||
614 | PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff), | ||
615 | PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00), | ||
616 | PIN_BANK_2BIT(11, 0x070, "gph"), | ||
617 | PIN_BANK_2BIT(13, 0x0d0, "gpj"), | ||
618 | }; | ||
619 | |||
620 | struct samsung_pin_ctrl s3c2440_pin_ctrl[] = { | ||
621 | { | ||
622 | .pin_banks = s3c2440_pin_banks, | ||
623 | .nr_banks = ARRAY_SIZE(s3c2440_pin_banks), | ||
624 | .eint_wkup_init = s3c24xx_eint_init, | ||
625 | .label = "S3C2440-GPIO", | ||
626 | }, | ||
627 | }; | ||
628 | |||
629 | static struct samsung_pin_bank s3c2450_pin_banks[] = { | ||
630 | PIN_BANK_A(28, 0x000, "gpa"), | ||
631 | PIN_BANK_2BIT(11, 0x010, "gpb"), | ||
632 | PIN_BANK_2BIT(16, 0x020, "gpc"), | ||
633 | PIN_BANK_2BIT(16, 0x030, "gpd"), | ||
634 | PIN_BANK_2BIT(16, 0x040, "gpe"), | ||
635 | PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff), | ||
636 | PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00), | ||
637 | PIN_BANK_2BIT(15, 0x070, "gph"), | ||
638 | PIN_BANK_2BIT(16, 0x0d0, "gpj"), | ||
639 | PIN_BANK_2BIT(16, 0x0e0, "gpk"), | ||
640 | PIN_BANK_2BIT(15, 0x0f0, "gpl"), | ||
641 | PIN_BANK_2BIT(2, 0x100, "gpm"), | ||
642 | }; | ||
643 | |||
644 | struct samsung_pin_ctrl s3c2450_pin_ctrl[] = { | ||
645 | { | ||
646 | .pin_banks = s3c2450_pin_banks, | ||
647 | .nr_banks = ARRAY_SIZE(s3c2450_pin_banks), | ||
648 | .eint_wkup_init = s3c24xx_eint_init, | ||
649 | .label = "S3C2450-GPIO", | ||
650 | }, | ||
651 | }; | ||