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16#include <linux/io.h>
17#include <linux/gpio/driver.h>
18#include <linux/of.h>
19#include <linux/of_address.h>
20#include <linux/of_device.h>
21#include <linux/of_irq.h>
22#include <linux/pinctrl/consumer.h>
23#include <linux/pinctrl/machine.h>
24#include <linux/pinctrl/pinconf.h>
25#include <linux/pinctrl/pinconf-generic.h>
26#include <linux/pinctrl/pinctrl.h>
27#include <linux/pinctrl/pinmux.h>
28#include <linux/platform_device.h>
29#include <linux/slab.h>
30#include <linux/bitops.h>
31#include <linux/regmap.h>
32#include <linux/mfd/syscon.h>
33#include <linux/delay.h>
34#include <linux/interrupt.h>
35#include <linux/pm.h>
36#include <dt-bindings/pinctrl/mt65xx.h>
37
38#include "../core.h"
39#include "../pinconf.h"
40#include "../pinctrl-utils.h"
41#include "pinctrl-mtk-common.h"
42
43#define MAX_GPIO_MODE_PER_REG 5
44#define GPIO_MODE_BITS 3
45#define GPIO_MODE_PREFIX "GPIO"
46
47static const char * const mtk_gpio_functions[] = {
48 "func0", "func1", "func2", "func3",
49 "func4", "func5", "func6", "func7",
50 "func8", "func9", "func10", "func11",
51 "func12", "func13", "func14", "func15",
52};
53
54
55
56
57
58
59
60static struct regmap *mtk_get_regmap(struct mtk_pinctrl *pctl,
61 unsigned long pin)
62{
63 if (pin >= pctl->devdata->type1_start && pin < pctl->devdata->type1_end)
64 return pctl->regmap2;
65 return pctl->regmap1;
66}
67
68static unsigned int mtk_get_port(struct mtk_pinctrl *pctl, unsigned long pin)
69{
70
71 return ((pin >> 4) & pctl->devdata->port_mask)
72 << pctl->devdata->port_shf;
73}
74
75static int mtk_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
76 struct pinctrl_gpio_range *range, unsigned offset,
77 bool input)
78{
79 unsigned int reg_addr;
80 unsigned int bit;
81 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
82
83 reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;
84 bit = BIT(offset & 0xf);
85
86 if (pctl->devdata->spec_dir_set)
87 pctl->devdata->spec_dir_set(®_addr, offset);
88
89 if (input)
90
91 reg_addr = CLR_ADDR(reg_addr, pctl);
92 else
93 reg_addr = SET_ADDR(reg_addr, pctl);
94
95 regmap_write(mtk_get_regmap(pctl, offset), reg_addr, bit);
96 return 0;
97}
98
99static void mtk_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
100{
101 unsigned int reg_addr;
102 unsigned int bit;
103 struct mtk_pinctrl *pctl = gpiochip_get_data(chip);
104
105 reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dout_offset;
106 bit = BIT(offset & 0xf);
107
108 if (value)
109 reg_addr = SET_ADDR(reg_addr, pctl);
110 else
111 reg_addr = CLR_ADDR(reg_addr, pctl);
112
113 regmap_write(mtk_get_regmap(pctl, offset), reg_addr, bit);
114}
115
116static int mtk_pconf_set_ies_smt(struct mtk_pinctrl *pctl, unsigned pin,
117 int value, enum pin_config_param arg)
118{
119 unsigned int reg_addr, offset;
120 unsigned int bit;
121
122
123
124
125
126 if (!pctl->devdata->spec_ies_smt_set &&
127 pctl->devdata->ies_offset == MTK_PINCTRL_NOT_SUPPORT &&
128 arg == PIN_CONFIG_INPUT_ENABLE)
129 return -EINVAL;
130
131 if (!pctl->devdata->spec_ies_smt_set &&
132 pctl->devdata->smt_offset == MTK_PINCTRL_NOT_SUPPORT &&
133 arg == PIN_CONFIG_INPUT_SCHMITT_ENABLE)
134 return -EINVAL;
135
136
137
138
139
140 if (pctl->devdata->spec_ies_smt_set) {
141 return pctl->devdata->spec_ies_smt_set(mtk_get_regmap(pctl, pin),
142 pin, pctl->devdata->port_align, value, arg);
143 }
144
145 bit = BIT(pin & 0xf);
146
147 if (arg == PIN_CONFIG_INPUT_ENABLE)
148 offset = pctl->devdata->ies_offset;
149 else
150 offset = pctl->devdata->smt_offset;
151
152 if (value)
153 reg_addr = SET_ADDR(mtk_get_port(pctl, pin) + offset, pctl);
154 else
155 reg_addr = CLR_ADDR(mtk_get_port(pctl, pin) + offset, pctl);
156
157 regmap_write(mtk_get_regmap(pctl, pin), reg_addr, bit);
158 return 0;
159}
160
161int mtk_pconf_spec_set_ies_smt_range(struct regmap *regmap,
162 const struct mtk_pin_ies_smt_set *ies_smt_infos, unsigned int info_num,
163 unsigned int pin, unsigned char align, int value)
164{
165 unsigned int i, reg_addr, bit;
166
167 for (i = 0; i < info_num; i++) {
168 if (pin >= ies_smt_infos[i].start &&
169 pin <= ies_smt_infos[i].end) {
170 break;
171 }
172 }
173
174 if (i == info_num)
175 return -EINVAL;
176
177 if (value)
178 reg_addr = ies_smt_infos[i].offset + align;
179 else
180 reg_addr = ies_smt_infos[i].offset + (align << 1);
181
182 bit = BIT(ies_smt_infos[i].bit);
183 regmap_write(regmap, reg_addr, bit);
184 return 0;
185}
186
187static const struct mtk_pin_drv_grp *mtk_find_pin_drv_grp_by_pin(
188 struct mtk_pinctrl *pctl, unsigned long pin) {
189 int i;
190
191 for (i = 0; i < pctl->devdata->n_pin_drv_grps; i++) {
192 const struct mtk_pin_drv_grp *pin_drv =
193 pctl->devdata->pin_drv_grp + i;
194 if (pin == pin_drv->pin)
195 return pin_drv;
196 }
197
198 return NULL;
199}
200
201static int mtk_pconf_set_driving(struct mtk_pinctrl *pctl,
202 unsigned int pin, unsigned char driving)
203{
204 const struct mtk_pin_drv_grp *pin_drv;
205 unsigned int val;
206 unsigned int bits, mask, shift;
207 const struct mtk_drv_group_desc *drv_grp;
208
209 if (pin >= pctl->devdata->npins)
210 return -EINVAL;
211
212 pin_drv = mtk_find_pin_drv_grp_by_pin(pctl, pin);
213 if (!pin_drv || pin_drv->grp > pctl->devdata->n_grp_cls)
214 return -EINVAL;
215
216 drv_grp = pctl->devdata->grp_desc + pin_drv->grp;
217 if (driving >= drv_grp->min_drv && driving <= drv_grp->max_drv
218 && !(driving % drv_grp->step)) {
219 val = driving / drv_grp->step - 1;
220 bits = drv_grp->high_bit - drv_grp->low_bit + 1;
221 mask = BIT(bits) - 1;
222 shift = pin_drv->bit + drv_grp->low_bit;
223 mask <<= shift;
224 val <<= shift;
225 return regmap_update_bits(mtk_get_regmap(pctl, pin),
226 pin_drv->offset, mask, val);
227 }
228
229 return -EINVAL;
230}
231
232int mtk_pctrl_spec_pull_set_samereg(struct regmap *regmap,
233 const struct mtk_pin_spec_pupd_set_samereg *pupd_infos,
234 unsigned int info_num, unsigned int pin,
235 unsigned char align, bool isup, unsigned int r1r0)
236{
237 unsigned int i;
238 unsigned int reg_pupd, reg_set, reg_rst;
239 unsigned int bit_pupd, bit_r0, bit_r1;
240 const struct mtk_pin_spec_pupd_set_samereg *spec_pupd_pin;
241 bool find = false;
242
243 for (i = 0; i < info_num; i++) {
244 if (pin == pupd_infos[i].pin) {
245 find = true;
246 break;
247 }
248 }
249
250 if (!find)
251 return -EINVAL;
252
253 spec_pupd_pin = pupd_infos + i;
254 reg_set = spec_pupd_pin->offset + align;
255 reg_rst = spec_pupd_pin->offset + (align << 1);
256
257 if (isup)
258 reg_pupd = reg_rst;
259 else
260 reg_pupd = reg_set;
261
262 bit_pupd = BIT(spec_pupd_pin->pupd_bit);
263 regmap_write(regmap, reg_pupd, bit_pupd);
264
265 bit_r0 = BIT(spec_pupd_pin->r0_bit);
266 bit_r1 = BIT(spec_pupd_pin->r1_bit);
267
268 switch (r1r0) {
269 case MTK_PUPD_SET_R1R0_00:
270 regmap_write(regmap, reg_rst, bit_r0);
271 regmap_write(regmap, reg_rst, bit_r1);
272 break;
273 case MTK_PUPD_SET_R1R0_01:
274 regmap_write(regmap, reg_set, bit_r0);
275 regmap_write(regmap, reg_rst, bit_r1);
276 break;
277 case MTK_PUPD_SET_R1R0_10:
278 regmap_write(regmap, reg_rst, bit_r0);
279 regmap_write(regmap, reg_set, bit_r1);
280 break;
281 case MTK_PUPD_SET_R1R0_11:
282 regmap_write(regmap, reg_set, bit_r0);
283 regmap_write(regmap, reg_set, bit_r1);
284 break;
285 default:
286 return -EINVAL;
287 }
288
289 return 0;
290}
291
292static int mtk_pconf_set_pull_select(struct mtk_pinctrl *pctl,
293 unsigned int pin, bool enable, bool isup, unsigned int arg)
294{
295 unsigned int bit;
296 unsigned int reg_pullen, reg_pullsel;
297 int ret;
298
299
300
301
302
303 if (pctl->devdata->spec_pull_set) {
304 ret = pctl->devdata->spec_pull_set(mtk_get_regmap(pctl, pin),
305 pin, pctl->devdata->port_align, isup, arg);
306 if (!ret)
307 return 0;
308 }
309
310
311 if (arg != 0 && arg != 1) {
312 dev_err(pctl->dev, "invalid pull-up argument %d on pin %d .\n",
313 arg, pin);
314 return -EINVAL;
315 }
316
317 bit = BIT(pin & 0xf);
318 if (enable)
319 reg_pullen = SET_ADDR(mtk_get_port(pctl, pin) +
320 pctl->devdata->pullen_offset, pctl);
321 else
322 reg_pullen = CLR_ADDR(mtk_get_port(pctl, pin) +
323 pctl->devdata->pullen_offset, pctl);
324
325 if (isup)
326 reg_pullsel = SET_ADDR(mtk_get_port(pctl, pin) +
327 pctl->devdata->pullsel_offset, pctl);
328 else
329 reg_pullsel = CLR_ADDR(mtk_get_port(pctl, pin) +
330 pctl->devdata->pullsel_offset, pctl);
331
332 regmap_write(mtk_get_regmap(pctl, pin), reg_pullen, bit);
333 regmap_write(mtk_get_regmap(pctl, pin), reg_pullsel, bit);
334 return 0;
335}
336
337static int mtk_pconf_parse_conf(struct pinctrl_dev *pctldev,
338 unsigned int pin, enum pin_config_param param,
339 enum pin_config_param arg)
340{
341 int ret = 0;
342 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
343
344 switch (param) {
345 case PIN_CONFIG_BIAS_DISABLE:
346 ret = mtk_pconf_set_pull_select(pctl, pin, false, false, arg);
347 break;
348 case PIN_CONFIG_BIAS_PULL_UP:
349 ret = mtk_pconf_set_pull_select(pctl, pin, true, true, arg);
350 break;
351 case PIN_CONFIG_BIAS_PULL_DOWN:
352 ret = mtk_pconf_set_pull_select(pctl, pin, true, false, arg);
353 break;
354 case PIN_CONFIG_INPUT_ENABLE:
355 mtk_pmx_gpio_set_direction(pctldev, NULL, pin, true);
356 ret = mtk_pconf_set_ies_smt(pctl, pin, arg, param);
357 break;
358 case PIN_CONFIG_OUTPUT:
359 mtk_gpio_set(pctl->chip, pin, arg);
360 ret = mtk_pmx_gpio_set_direction(pctldev, NULL, pin, false);
361 break;
362 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
363 mtk_pmx_gpio_set_direction(pctldev, NULL, pin, true);
364 ret = mtk_pconf_set_ies_smt(pctl, pin, arg, param);
365 break;
366 case PIN_CONFIG_DRIVE_STRENGTH:
367 ret = mtk_pconf_set_driving(pctl, pin, arg);
368 break;
369 default:
370 ret = -EINVAL;
371 }
372
373 return ret;
374}
375
376static int mtk_pconf_group_get(struct pinctrl_dev *pctldev,
377 unsigned group,
378 unsigned long *config)
379{
380 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
381
382 *config = pctl->groups[group].config;
383
384 return 0;
385}
386
387static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group,
388 unsigned long *configs, unsigned num_configs)
389{
390 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
391 struct mtk_pinctrl_group *g = &pctl->groups[group];
392 int i, ret;
393
394 for (i = 0; i < num_configs; i++) {
395 ret = mtk_pconf_parse_conf(pctldev, g->pin,
396 pinconf_to_config_param(configs[i]),
397 pinconf_to_config_argument(configs[i]));
398 if (ret < 0)
399 return ret;
400
401 g->config = configs[i];
402 }
403
404 return 0;
405}
406
407static const struct pinconf_ops mtk_pconf_ops = {
408 .pin_config_group_get = mtk_pconf_group_get,
409 .pin_config_group_set = mtk_pconf_group_set,
410};
411
412static struct mtk_pinctrl_group *
413mtk_pctrl_find_group_by_pin(struct mtk_pinctrl *pctl, u32 pin)
414{
415 int i;
416
417 for (i = 0; i < pctl->ngroups; i++) {
418 struct mtk_pinctrl_group *grp = pctl->groups + i;
419
420 if (grp->pin == pin)
421 return grp;
422 }
423
424 return NULL;
425}
426
427static const struct mtk_desc_function *mtk_pctrl_find_function_by_pin(
428 struct mtk_pinctrl *pctl, u32 pin_num, u32 fnum)
429{
430 const struct mtk_desc_pin *pin = pctl->devdata->pins + pin_num;
431 const struct mtk_desc_function *func = pin->functions;
432
433 while (func && func->name) {
434 if (func->muxval == fnum)
435 return func;
436 func++;
437 }
438
439 return NULL;
440}
441
442static bool mtk_pctrl_is_function_valid(struct mtk_pinctrl *pctl,
443 u32 pin_num, u32 fnum)
444{
445 int i;
446
447 for (i = 0; i < pctl->devdata->npins; i++) {
448 const struct mtk_desc_pin *pin = pctl->devdata->pins + i;
449
450 if (pin->pin.number == pin_num) {
451 const struct mtk_desc_function *func =
452 pin->functions;
453
454 while (func && func->name) {
455 if (func->muxval == fnum)
456 return true;
457 func++;
458 }
459
460 break;
461 }
462 }
463
464 return false;
465}
466
467static int mtk_pctrl_dt_node_to_map_func(struct mtk_pinctrl *pctl,
468 u32 pin, u32 fnum, struct mtk_pinctrl_group *grp,
469 struct pinctrl_map **map, unsigned *reserved_maps,
470 unsigned *num_maps)
471{
472 bool ret;
473
474 if (*num_maps == *reserved_maps)
475 return -ENOSPC;
476
477 (*map)[*num_maps].type = PIN_MAP_TYPE_MUX_GROUP;
478 (*map)[*num_maps].data.mux.group = grp->name;
479
480 ret = mtk_pctrl_is_function_valid(pctl, pin, fnum);
481 if (!ret) {
482 dev_err(pctl->dev, "invalid function %d on pin %d .\n",
483 fnum, pin);
484 return -EINVAL;
485 }
486
487 (*map)[*num_maps].data.mux.function = mtk_gpio_functions[fnum];
488 (*num_maps)++;
489
490 return 0;
491}
492
493static int mtk_pctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
494 struct device_node *node,
495 struct pinctrl_map **map,
496 unsigned *reserved_maps,
497 unsigned *num_maps)
498{
499 struct property *pins;
500 u32 pinfunc, pin, func;
501 int num_pins, num_funcs, maps_per_pin;
502 unsigned long *configs;
503 unsigned int num_configs;
504 bool has_config = 0;
505 int i, err;
506 unsigned reserve = 0;
507 struct mtk_pinctrl_group *grp;
508 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
509
510 pins = of_find_property(node, "pinmux", NULL);
511 if (!pins) {
512 dev_err(pctl->dev, "missing pins property in node %s .\n",
513 node->name);
514 return -EINVAL;
515 }
516
517 err = pinconf_generic_parse_dt_config(node, pctldev, &configs,
518 &num_configs);
519 if (err)
520 return err;
521
522 if (num_configs)
523 has_config = 1;
524
525 num_pins = pins->length / sizeof(u32);
526 num_funcs = num_pins;
527 maps_per_pin = 0;
528 if (num_funcs)
529 maps_per_pin++;
530 if (has_config && num_pins >= 1)
531 maps_per_pin++;
532
533 if (!num_pins || !maps_per_pin) {
534 err = -EINVAL;
535 goto exit;
536 }
537
538 reserve = num_pins * maps_per_pin;
539
540 err = pinctrl_utils_reserve_map(pctldev, map,
541 reserved_maps, num_maps, reserve);
542 if (err < 0)
543 goto exit;
544
545 for (i = 0; i < num_pins; i++) {
546 err = of_property_read_u32_index(node, "pinmux",
547 i, &pinfunc);
548 if (err)
549 goto exit;
550
551 pin = MTK_GET_PIN_NO(pinfunc);
552 func = MTK_GET_PIN_FUNC(pinfunc);
553
554 if (pin >= pctl->devdata->npins ||
555 func >= ARRAY_SIZE(mtk_gpio_functions)) {
556 dev_err(pctl->dev, "invalid pins value.\n");
557 err = -EINVAL;
558 goto exit;
559 }
560
561 grp = mtk_pctrl_find_group_by_pin(pctl, pin);
562 if (!grp) {
563 dev_err(pctl->dev, "unable to match pin %d to group\n",
564 pin);
565 err = -EINVAL;
566 goto exit;
567 }
568
569 err = mtk_pctrl_dt_node_to_map_func(pctl, pin, func, grp, map,
570 reserved_maps, num_maps);
571 if (err < 0)
572 goto exit;
573
574 if (has_config) {
575 err = pinctrl_utils_add_map_configs(pctldev, map,
576 reserved_maps, num_maps, grp->name,
577 configs, num_configs,
578 PIN_MAP_TYPE_CONFIGS_GROUP);
579 if (err < 0)
580 goto exit;
581 }
582 }
583
584 err = 0;
585
586exit:
587 kfree(configs);
588 return err;
589}
590
591static int mtk_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
592 struct device_node *np_config,
593 struct pinctrl_map **map, unsigned *num_maps)
594{
595 struct device_node *np;
596 unsigned reserved_maps;
597 int ret;
598
599 *map = NULL;
600 *num_maps = 0;
601 reserved_maps = 0;
602
603 for_each_child_of_node(np_config, np) {
604 ret = mtk_pctrl_dt_subnode_to_map(pctldev, np, map,
605 &reserved_maps, num_maps);
606 if (ret < 0) {
607 pinctrl_utils_free_map(pctldev, *map, *num_maps);
608 of_node_put(np);
609 return ret;
610 }
611 }
612
613 return 0;
614}
615
616static int mtk_pctrl_get_groups_count(struct pinctrl_dev *pctldev)
617{
618 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
619
620 return pctl->ngroups;
621}
622
623static const char *mtk_pctrl_get_group_name(struct pinctrl_dev *pctldev,
624 unsigned group)
625{
626 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
627
628 return pctl->groups[group].name;
629}
630
631static int mtk_pctrl_get_group_pins(struct pinctrl_dev *pctldev,
632 unsigned group,
633 const unsigned **pins,
634 unsigned *num_pins)
635{
636 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
637
638 *pins = (unsigned *)&pctl->groups[group].pin;
639 *num_pins = 1;
640
641 return 0;
642}
643
644static const struct pinctrl_ops mtk_pctrl_ops = {
645 .dt_node_to_map = mtk_pctrl_dt_node_to_map,
646 .dt_free_map = pinctrl_utils_free_map,
647 .get_groups_count = mtk_pctrl_get_groups_count,
648 .get_group_name = mtk_pctrl_get_group_name,
649 .get_group_pins = mtk_pctrl_get_group_pins,
650};
651
652static int mtk_pmx_get_funcs_cnt(struct pinctrl_dev *pctldev)
653{
654 return ARRAY_SIZE(mtk_gpio_functions);
655}
656
657static const char *mtk_pmx_get_func_name(struct pinctrl_dev *pctldev,
658 unsigned selector)
659{
660 return mtk_gpio_functions[selector];
661}
662
663static int mtk_pmx_get_func_groups(struct pinctrl_dev *pctldev,
664 unsigned function,
665 const char * const **groups,
666 unsigned * const num_groups)
667{
668 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
669
670 *groups = pctl->grp_names;
671 *num_groups = pctl->ngroups;
672
673 return 0;
674}
675
676static int mtk_pmx_set_mode(struct pinctrl_dev *pctldev,
677 unsigned long pin, unsigned long mode)
678{
679 unsigned int reg_addr;
680 unsigned char bit;
681 unsigned int val;
682 unsigned int mask = (1L << GPIO_MODE_BITS) - 1;
683 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
684
685 if (pctl->devdata->spec_pinmux_set)
686 pctl->devdata->spec_pinmux_set(mtk_get_regmap(pctl, pin),
687 pin, mode);
688
689 reg_addr = ((pin / MAX_GPIO_MODE_PER_REG) << pctl->devdata->port_shf)
690 + pctl->devdata->pinmux_offset;
691
692 mode &= mask;
693 bit = pin % MAX_GPIO_MODE_PER_REG;
694 mask <<= (GPIO_MODE_BITS * bit);
695 val = (mode << (GPIO_MODE_BITS * bit));
696 return regmap_update_bits(mtk_get_regmap(pctl, pin),
697 reg_addr, mask, val);
698}
699
700static const struct mtk_desc_pin *
701mtk_find_pin_by_eint_num(struct mtk_pinctrl *pctl, unsigned int eint_num)
702{
703 int i;
704 const struct mtk_desc_pin *pin;
705
706 for (i = 0; i < pctl->devdata->npins; i++) {
707 pin = pctl->devdata->pins + i;
708 if (pin->eint.eintnum == eint_num)
709 return pin;
710 }
711
712 return NULL;
713}
714
715static int mtk_pmx_set_mux(struct pinctrl_dev *pctldev,
716 unsigned function,
717 unsigned group)
718{
719 bool ret;
720 const struct mtk_desc_function *desc;
721 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
722 struct mtk_pinctrl_group *g = pctl->groups + group;
723
724 ret = mtk_pctrl_is_function_valid(pctl, g->pin, function);
725 if (!ret) {
726 dev_err(pctl->dev, "invalid function %d on group %d .\n",
727 function, group);
728 return -EINVAL;
729 }
730
731 desc = mtk_pctrl_find_function_by_pin(pctl, g->pin, function);
732 if (!desc)
733 return -EINVAL;
734 mtk_pmx_set_mode(pctldev, g->pin, desc->muxval);
735 return 0;
736}
737
738static int mtk_pmx_find_gpio_mode(struct mtk_pinctrl *pctl,
739 unsigned offset)
740{
741 const struct mtk_desc_pin *pin = pctl->devdata->pins + offset;
742 const struct mtk_desc_function *func = pin->functions;
743
744 while (func && func->name) {
745 if (!strncmp(func->name, GPIO_MODE_PREFIX,
746 sizeof(GPIO_MODE_PREFIX)-1))
747 return func->muxval;
748 func++;
749 }
750 return -EINVAL;
751}
752
753static int mtk_pmx_gpio_request_enable(struct pinctrl_dev *pctldev,
754 struct pinctrl_gpio_range *range,
755 unsigned offset)
756{
757 int muxval;
758 struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
759
760 muxval = mtk_pmx_find_gpio_mode(pctl, offset);
761
762 if (muxval < 0) {
763 dev_err(pctl->dev, "invalid gpio pin %d.\n", offset);
764 return -EINVAL;
765 }
766
767 mtk_pmx_set_mode(pctldev, offset, muxval);
768 mtk_pconf_set_ies_smt(pctl, offset, 1, PIN_CONFIG_INPUT_ENABLE);
769
770 return 0;
771}
772
773static const struct pinmux_ops mtk_pmx_ops = {
774 .get_functions_count = mtk_pmx_get_funcs_cnt,
775 .get_function_name = mtk_pmx_get_func_name,
776 .get_function_groups = mtk_pmx_get_func_groups,
777 .set_mux = mtk_pmx_set_mux,
778 .gpio_set_direction = mtk_pmx_gpio_set_direction,
779 .gpio_request_enable = mtk_pmx_gpio_request_enable,
780};
781
782static int mtk_gpio_direction_input(struct gpio_chip *chip,
783 unsigned offset)
784{
785 return pinctrl_gpio_direction_input(chip->base + offset);
786}
787
788static int mtk_gpio_direction_output(struct gpio_chip *chip,
789 unsigned offset, int value)
790{
791 mtk_gpio_set(chip, offset, value);
792 return pinctrl_gpio_direction_output(chip->base + offset);
793}
794
795static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
796{
797 unsigned int reg_addr;
798 unsigned int bit;
799 unsigned int read_val = 0;
800
801 struct mtk_pinctrl *pctl = gpiochip_get_data(chip);
802
803 reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;
804 bit = BIT(offset & 0xf);
805
806 if (pctl->devdata->spec_dir_set)
807 pctl->devdata->spec_dir_set(®_addr, offset);
808
809 regmap_read(pctl->regmap1, reg_addr, &read_val);
810 return !(read_val & bit);
811}
812
813static int mtk_gpio_get(struct gpio_chip *chip, unsigned offset)
814{
815 unsigned int reg_addr;
816 unsigned int bit;
817 unsigned int read_val = 0;
818 struct mtk_pinctrl *pctl = gpiochip_get_data(chip);
819
820 reg_addr = mtk_get_port(pctl, offset) +
821 pctl->devdata->din_offset;
822
823 bit = BIT(offset & 0xf);
824 regmap_read(pctl->regmap1, reg_addr, &read_val);
825 return !!(read_val & bit);
826}
827
828static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
829{
830 const struct mtk_desc_pin *pin;
831 struct mtk_pinctrl *pctl = gpiochip_get_data(chip);
832 int irq;
833
834 pin = pctl->devdata->pins + offset;
835 if (pin->eint.eintnum == NO_EINT_SUPPORT)
836 return -EINVAL;
837
838 irq = irq_find_mapping(pctl->domain, pin->eint.eintnum);
839 if (!irq)
840 return -EINVAL;
841
842 return irq;
843}
844
845static int mtk_pinctrl_irq_request_resources(struct irq_data *d)
846{
847 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
848 const struct mtk_desc_pin *pin;
849 int ret;
850
851 pin = mtk_find_pin_by_eint_num(pctl, d->hwirq);
852
853 if (!pin) {
854 dev_err(pctl->dev, "Can not find pin\n");
855 return -EINVAL;
856 }
857
858 ret = gpiochip_lock_as_irq(pctl->chip, pin->pin.number);
859 if (ret) {
860 dev_err(pctl->dev, "unable to lock HW IRQ %lu for IRQ\n",
861 irqd_to_hwirq(d));
862 return ret;
863 }
864
865
866 mtk_pmx_set_mode(pctl->pctl_dev, pin->pin.number, pin->eint.eintmux);
867
868 mtk_pmx_gpio_set_direction(pctl->pctl_dev, NULL, pin->pin.number, true);
869
870 mtk_pconf_set_ies_smt(pctl, pin->pin.number, 1, PIN_CONFIG_INPUT_ENABLE);
871
872 return 0;
873}
874
875static void mtk_pinctrl_irq_release_resources(struct irq_data *d)
876{
877 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
878 const struct mtk_desc_pin *pin;
879
880 pin = mtk_find_pin_by_eint_num(pctl, d->hwirq);
881
882 if (!pin) {
883 dev_err(pctl->dev, "Can not find pin\n");
884 return;
885 }
886
887 gpiochip_unlock_as_irq(pctl->chip, pin->pin.number);
888}
889
890static void __iomem *mtk_eint_get_offset(struct mtk_pinctrl *pctl,
891 unsigned int eint_num, unsigned int offset)
892{
893 unsigned int eint_base = 0;
894 void __iomem *reg;
895
896 if (eint_num >= pctl->devdata->ap_num)
897 eint_base = pctl->devdata->ap_num;
898
899 reg = pctl->eint_reg_base + offset + ((eint_num - eint_base) / 32) * 4;
900
901 return reg;
902}
903
904
905
906
907
908static unsigned int mtk_eint_can_en_debounce(struct mtk_pinctrl *pctl,
909 unsigned int eint_num)
910{
911 unsigned int sens;
912 unsigned int bit = BIT(eint_num % 32);
913 const struct mtk_eint_offsets *eint_offsets =
914 &pctl->devdata->eint_offsets;
915
916 void __iomem *reg = mtk_eint_get_offset(pctl, eint_num,
917 eint_offsets->sens);
918
919 if (readl(reg) & bit)
920 sens = MT_LEVEL_SENSITIVE;
921 else
922 sens = MT_EDGE_SENSITIVE;
923
924 if ((eint_num < pctl->devdata->db_cnt) && (sens != MT_EDGE_SENSITIVE))
925 return 1;
926 else
927 return 0;
928}
929
930
931
932
933
934static unsigned int mtk_eint_get_mask(struct mtk_pinctrl *pctl,
935 unsigned int eint_num)
936{
937 unsigned int bit = BIT(eint_num % 32);
938 const struct mtk_eint_offsets *eint_offsets =
939 &pctl->devdata->eint_offsets;
940
941 void __iomem *reg = mtk_eint_get_offset(pctl, eint_num,
942 eint_offsets->mask);
943
944 return !!(readl(reg) & bit);
945}
946
947static int mtk_eint_flip_edge(struct mtk_pinctrl *pctl, int hwirq)
948{
949 int start_level, curr_level;
950 unsigned int reg_offset;
951 const struct mtk_eint_offsets *eint_offsets = &(pctl->devdata->eint_offsets);
952 u32 mask = BIT(hwirq & 0x1f);
953 u32 port = (hwirq >> 5) & eint_offsets->port_mask;
954 void __iomem *reg = pctl->eint_reg_base + (port << 2);
955 const struct mtk_desc_pin *pin;
956
957 pin = mtk_find_pin_by_eint_num(pctl, hwirq);
958 curr_level = mtk_gpio_get(pctl->chip, pin->pin.number);
959 do {
960 start_level = curr_level;
961 if (start_level)
962 reg_offset = eint_offsets->pol_clr;
963 else
964 reg_offset = eint_offsets->pol_set;
965 writel(mask, reg + reg_offset);
966
967 curr_level = mtk_gpio_get(pctl->chip, pin->pin.number);
968 } while (start_level != curr_level);
969
970 return start_level;
971}
972
973static void mtk_eint_mask(struct irq_data *d)
974{
975 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
976 const struct mtk_eint_offsets *eint_offsets =
977 &pctl->devdata->eint_offsets;
978 u32 mask = BIT(d->hwirq & 0x1f);
979 void __iomem *reg = mtk_eint_get_offset(pctl, d->hwirq,
980 eint_offsets->mask_set);
981
982 writel(mask, reg);
983}
984
985static void mtk_eint_unmask(struct irq_data *d)
986{
987 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
988 const struct mtk_eint_offsets *eint_offsets =
989 &pctl->devdata->eint_offsets;
990 u32 mask = BIT(d->hwirq & 0x1f);
991 void __iomem *reg = mtk_eint_get_offset(pctl, d->hwirq,
992 eint_offsets->mask_clr);
993
994 writel(mask, reg);
995
996 if (pctl->eint_dual_edges[d->hwirq])
997 mtk_eint_flip_edge(pctl, d->hwirq);
998}
999
1000static int mtk_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
1001 unsigned debounce)
1002{
1003 struct mtk_pinctrl *pctl = dev_get_drvdata(chip->parent);
1004 int eint_num, virq, eint_offset;
1005 unsigned int set_offset, bit, clr_bit, clr_offset, rst, i, unmask, dbnc;
1006 static const unsigned int debounce_time[] = {500, 1000, 16000, 32000, 64000,
1007 128000, 256000};
1008 const struct mtk_desc_pin *pin;
1009 struct irq_data *d;
1010
1011 pin = pctl->devdata->pins + offset;
1012 if (pin->eint.eintnum == NO_EINT_SUPPORT)
1013 return -EINVAL;
1014
1015 eint_num = pin->eint.eintnum;
1016 virq = irq_find_mapping(pctl->domain, eint_num);
1017 eint_offset = (eint_num % 4) * 8;
1018 d = irq_get_irq_data(virq);
1019
1020 set_offset = (eint_num / 4) * 4 + pctl->devdata->eint_offsets.dbnc_set;
1021 clr_offset = (eint_num / 4) * 4 + pctl->devdata->eint_offsets.dbnc_clr;
1022 if (!mtk_eint_can_en_debounce(pctl, eint_num))
1023 return -ENOSYS;
1024
1025 dbnc = ARRAY_SIZE(debounce_time);
1026 for (i = 0; i < ARRAY_SIZE(debounce_time); i++) {
1027 if (debounce <= debounce_time[i]) {
1028 dbnc = i;
1029 break;
1030 }
1031 }
1032
1033 if (!mtk_eint_get_mask(pctl, eint_num)) {
1034 mtk_eint_mask(d);
1035 unmask = 1;
1036 } else {
1037 unmask = 0;
1038 }
1039
1040 clr_bit = 0xff << eint_offset;
1041 writel(clr_bit, pctl->eint_reg_base + clr_offset);
1042
1043 bit = ((dbnc << EINT_DBNC_SET_DBNC_BITS) | EINT_DBNC_SET_EN) <<
1044 eint_offset;
1045 rst = EINT_DBNC_RST_BIT << eint_offset;
1046 writel(rst | bit, pctl->eint_reg_base + set_offset);
1047
1048
1049
1050 udelay(1);
1051 if (unmask == 1)
1052 mtk_eint_unmask(d);
1053
1054 return 0;
1055}
1056
1057static const struct gpio_chip mtk_gpio_chip = {
1058 .owner = THIS_MODULE,
1059 .request = gpiochip_generic_request,
1060 .free = gpiochip_generic_free,
1061 .get_direction = mtk_gpio_get_direction,
1062 .direction_input = mtk_gpio_direction_input,
1063 .direction_output = mtk_gpio_direction_output,
1064 .get = mtk_gpio_get,
1065 .set = mtk_gpio_set,
1066 .to_irq = mtk_gpio_to_irq,
1067 .set_debounce = mtk_gpio_set_debounce,
1068 .of_gpio_n_cells = 2,
1069};
1070
1071static int mtk_eint_set_type(struct irq_data *d,
1072 unsigned int type)
1073{
1074 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
1075 const struct mtk_eint_offsets *eint_offsets =
1076 &pctl->devdata->eint_offsets;
1077 u32 mask = BIT(d->hwirq & 0x1f);
1078 void __iomem *reg;
1079
1080 if (((type & IRQ_TYPE_EDGE_BOTH) && (type & IRQ_TYPE_LEVEL_MASK)) ||
1081 ((type & IRQ_TYPE_LEVEL_MASK) == IRQ_TYPE_LEVEL_MASK)) {
1082 dev_err(pctl->dev, "Can't configure IRQ%d (EINT%lu) for type 0x%X\n",
1083 d->irq, d->hwirq, type);
1084 return -EINVAL;
1085 }
1086
1087 if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH)
1088 pctl->eint_dual_edges[d->hwirq] = 1;
1089 else
1090 pctl->eint_dual_edges[d->hwirq] = 0;
1091
1092 if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING)) {
1093 reg = mtk_eint_get_offset(pctl, d->hwirq,
1094 eint_offsets->pol_clr);
1095 writel(mask, reg);
1096 } else {
1097 reg = mtk_eint_get_offset(pctl, d->hwirq,
1098 eint_offsets->pol_set);
1099 writel(mask, reg);
1100 }
1101
1102 if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
1103 reg = mtk_eint_get_offset(pctl, d->hwirq,
1104 eint_offsets->sens_clr);
1105 writel(mask, reg);
1106 } else {
1107 reg = mtk_eint_get_offset(pctl, d->hwirq,
1108 eint_offsets->sens_set);
1109 writel(mask, reg);
1110 }
1111
1112 if (pctl->eint_dual_edges[d->hwirq])
1113 mtk_eint_flip_edge(pctl, d->hwirq);
1114
1115 return 0;
1116}
1117
1118static int mtk_eint_irq_set_wake(struct irq_data *d, unsigned int on)
1119{
1120 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
1121 int shift = d->hwirq & 0x1f;
1122 int reg = d->hwirq >> 5;
1123
1124 if (on)
1125 pctl->wake_mask[reg] |= BIT(shift);
1126 else
1127 pctl->wake_mask[reg] &= ~BIT(shift);
1128
1129 return 0;
1130}
1131
1132static void mtk_eint_chip_write_mask(const struct mtk_eint_offsets *chip,
1133 void __iomem *eint_reg_base, u32 *buf)
1134{
1135 int port;
1136 void __iomem *reg;
1137
1138 for (port = 0; port < chip->ports; port++) {
1139 reg = eint_reg_base + (port << 2);
1140 writel_relaxed(~buf[port], reg + chip->mask_set);
1141 writel_relaxed(buf[port], reg + chip->mask_clr);
1142 }
1143}
1144
1145static void mtk_eint_chip_read_mask(const struct mtk_eint_offsets *chip,
1146 void __iomem *eint_reg_base, u32 *buf)
1147{
1148 int port;
1149 void __iomem *reg;
1150
1151 for (port = 0; port < chip->ports; port++) {
1152 reg = eint_reg_base + chip->mask + (port << 2);
1153 buf[port] = ~readl_relaxed(reg);
1154
1155 }
1156}
1157
1158static int mtk_eint_suspend(struct device *device)
1159{
1160 void __iomem *reg;
1161 struct mtk_pinctrl *pctl = dev_get_drvdata(device);
1162 const struct mtk_eint_offsets *eint_offsets =
1163 &pctl->devdata->eint_offsets;
1164
1165 reg = pctl->eint_reg_base;
1166 mtk_eint_chip_read_mask(eint_offsets, reg, pctl->cur_mask);
1167 mtk_eint_chip_write_mask(eint_offsets, reg, pctl->wake_mask);
1168
1169 return 0;
1170}
1171
1172static int mtk_eint_resume(struct device *device)
1173{
1174 struct mtk_pinctrl *pctl = dev_get_drvdata(device);
1175 const struct mtk_eint_offsets *eint_offsets =
1176 &pctl->devdata->eint_offsets;
1177
1178 mtk_eint_chip_write_mask(eint_offsets,
1179 pctl->eint_reg_base, pctl->cur_mask);
1180
1181 return 0;
1182}
1183
1184const struct dev_pm_ops mtk_eint_pm_ops = {
1185 .suspend_noirq = mtk_eint_suspend,
1186 .resume_noirq = mtk_eint_resume,
1187};
1188
1189static void mtk_eint_ack(struct irq_data *d)
1190{
1191 struct mtk_pinctrl *pctl = irq_data_get_irq_chip_data(d);
1192 const struct mtk_eint_offsets *eint_offsets =
1193 &pctl->devdata->eint_offsets;
1194 u32 mask = BIT(d->hwirq & 0x1f);
1195 void __iomem *reg = mtk_eint_get_offset(pctl, d->hwirq,
1196 eint_offsets->ack);
1197
1198 writel(mask, reg);
1199}
1200
1201static struct irq_chip mtk_pinctrl_irq_chip = {
1202 .name = "mt-eint",
1203 .irq_disable = mtk_eint_mask,
1204 .irq_mask = mtk_eint_mask,
1205 .irq_unmask = mtk_eint_unmask,
1206 .irq_ack = mtk_eint_ack,
1207 .irq_set_type = mtk_eint_set_type,
1208 .irq_set_wake = mtk_eint_irq_set_wake,
1209 .irq_request_resources = mtk_pinctrl_irq_request_resources,
1210 .irq_release_resources = mtk_pinctrl_irq_release_resources,
1211};
1212
1213static unsigned int mtk_eint_init(struct mtk_pinctrl *pctl)
1214{
1215 const struct mtk_eint_offsets *eint_offsets =
1216 &pctl->devdata->eint_offsets;
1217 void __iomem *reg = pctl->eint_reg_base + eint_offsets->dom_en;
1218 unsigned int i;
1219
1220 for (i = 0; i < pctl->devdata->ap_num; i += 32) {
1221 writel(0xffffffff, reg);
1222 reg += 4;
1223 }
1224 return 0;
1225}
1226
1227static inline void
1228mtk_eint_debounce_process(struct mtk_pinctrl *pctl, int index)
1229{
1230 unsigned int rst, ctrl_offset;
1231 unsigned int bit, dbnc;
1232 const struct mtk_eint_offsets *eint_offsets =
1233 &pctl->devdata->eint_offsets;
1234
1235 ctrl_offset = (index / 4) * 4 + eint_offsets->dbnc_ctrl;
1236 dbnc = readl(pctl->eint_reg_base + ctrl_offset);
1237 bit = EINT_DBNC_SET_EN << ((index % 4) * 8);
1238 if ((bit & dbnc) > 0) {
1239 ctrl_offset = (index / 4) * 4 + eint_offsets->dbnc_set;
1240 rst = EINT_DBNC_RST_BIT << ((index % 4) * 8);
1241 writel(rst, pctl->eint_reg_base + ctrl_offset);
1242 }
1243}
1244
1245static void mtk_eint_irq_handler(struct irq_desc *desc)
1246{
1247 struct irq_chip *chip = irq_desc_get_chip(desc);
1248 struct mtk_pinctrl *pctl = irq_desc_get_handler_data(desc);
1249 unsigned int status, eint_num;
1250 int offset, index, virq;
1251 const struct mtk_eint_offsets *eint_offsets =
1252 &pctl->devdata->eint_offsets;
1253 void __iomem *reg = mtk_eint_get_offset(pctl, 0, eint_offsets->stat);
1254 int dual_edges, start_level, curr_level;
1255 const struct mtk_desc_pin *pin;
1256
1257 chained_irq_enter(chip, desc);
1258 for (eint_num = 0;
1259 eint_num < pctl->devdata->ap_num;
1260 eint_num += 32, reg += 4) {
1261 status = readl(reg);
1262 while (status) {
1263 offset = __ffs(status);
1264 index = eint_num + offset;
1265 virq = irq_find_mapping(pctl->domain, index);
1266 status &= ~BIT(offset);
1267
1268 dual_edges = pctl->eint_dual_edges[index];
1269 if (dual_edges) {
1270
1271
1272 writel(BIT(offset), reg - eint_offsets->stat +
1273 eint_offsets->soft_clr);
1274
1275 pin = mtk_find_pin_by_eint_num(pctl, index);
1276 start_level = mtk_gpio_get(pctl->chip,
1277 pin->pin.number);
1278 }
1279
1280 generic_handle_irq(virq);
1281
1282 if (dual_edges) {
1283 curr_level = mtk_eint_flip_edge(pctl, index);
1284
1285
1286
1287 if (start_level != curr_level)
1288 writel(BIT(offset), reg -
1289 eint_offsets->stat +
1290 eint_offsets->soft_set);
1291 }
1292
1293 if (index < pctl->devdata->db_cnt)
1294 mtk_eint_debounce_process(pctl , index);
1295 }
1296 }
1297 chained_irq_exit(chip, desc);
1298}
1299
1300static int mtk_pctrl_build_state(struct platform_device *pdev)
1301{
1302 struct mtk_pinctrl *pctl = platform_get_drvdata(pdev);
1303 int i;
1304
1305 pctl->ngroups = pctl->devdata->npins;
1306
1307
1308 pctl->groups = devm_kcalloc(&pdev->dev, pctl->ngroups,
1309 sizeof(*pctl->groups), GFP_KERNEL);
1310 if (!pctl->groups)
1311 return -ENOMEM;
1312
1313
1314 pctl->grp_names = devm_kcalloc(&pdev->dev, pctl->ngroups,
1315 sizeof(*pctl->grp_names), GFP_KERNEL);
1316 if (!pctl->grp_names)
1317 return -ENOMEM;
1318
1319 for (i = 0; i < pctl->devdata->npins; i++) {
1320 const struct mtk_desc_pin *pin = pctl->devdata->pins + i;
1321 struct mtk_pinctrl_group *group = pctl->groups + i;
1322
1323 group->name = pin->pin.name;
1324 group->pin = pin->pin.number;
1325
1326 pctl->grp_names[i] = pin->pin.name;
1327 }
1328
1329 return 0;
1330}
1331
1332int mtk_pctrl_init(struct platform_device *pdev,
1333 const struct mtk_pinctrl_devdata *data,
1334 struct regmap *regmap)
1335{
1336 struct pinctrl_pin_desc *pins;
1337 struct mtk_pinctrl *pctl;
1338 struct device_node *np = pdev->dev.of_node, *node;
1339 struct property *prop;
1340 struct resource *res;
1341 int i, ret, irq, ports_buf;
1342
1343 pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
1344 if (!pctl)
1345 return -ENOMEM;
1346
1347 platform_set_drvdata(pdev, pctl);
1348
1349 prop = of_find_property(np, "pins-are-numbered", NULL);
1350 if (!prop) {
1351 dev_err(&pdev->dev, "only support pins-are-numbered format\n");
1352 return -EINVAL;
1353 }
1354
1355 node = of_parse_phandle(np, "mediatek,pctl-regmap", 0);
1356 if (node) {
1357 pctl->regmap1 = syscon_node_to_regmap(node);
1358 if (IS_ERR(pctl->regmap1))
1359 return PTR_ERR(pctl->regmap1);
1360 } else if (regmap) {
1361 pctl->regmap1 = regmap;
1362 } else {
1363 dev_err(&pdev->dev, "Pinctrl node has not register regmap.\n");
1364 return -EINVAL;
1365 }
1366
1367
1368 node = of_parse_phandle(np, "mediatek,pctl-regmap", 1);
1369 if (node) {
1370 pctl->regmap2 = syscon_node_to_regmap(node);
1371 if (IS_ERR(pctl->regmap2))
1372 return PTR_ERR(pctl->regmap2);
1373 }
1374
1375 pctl->devdata = data;
1376 ret = mtk_pctrl_build_state(pdev);
1377 if (ret) {
1378 dev_err(&pdev->dev, "build state failed: %d\n", ret);
1379 return -EINVAL;
1380 }
1381
1382 pins = devm_kcalloc(&pdev->dev, pctl->devdata->npins, sizeof(*pins),
1383 GFP_KERNEL);
1384 if (!pins)
1385 return -ENOMEM;
1386
1387 for (i = 0; i < pctl->devdata->npins; i++)
1388 pins[i] = pctl->devdata->pins[i].pin;
1389
1390 pctl->pctl_desc.name = dev_name(&pdev->dev);
1391 pctl->pctl_desc.owner = THIS_MODULE;
1392 pctl->pctl_desc.pins = pins;
1393 pctl->pctl_desc.npins = pctl->devdata->npins;
1394 pctl->pctl_desc.confops = &mtk_pconf_ops;
1395 pctl->pctl_desc.pctlops = &mtk_pctrl_ops;
1396 pctl->pctl_desc.pmxops = &mtk_pmx_ops;
1397 pctl->dev = &pdev->dev;
1398
1399 pctl->pctl_dev = devm_pinctrl_register(&pdev->dev, &pctl->pctl_desc,
1400 pctl);
1401 if (IS_ERR(pctl->pctl_dev)) {
1402 dev_err(&pdev->dev, "couldn't register pinctrl driver\n");
1403 return PTR_ERR(pctl->pctl_dev);
1404 }
1405
1406 pctl->chip = devm_kzalloc(&pdev->dev, sizeof(*pctl->chip), GFP_KERNEL);
1407 if (!pctl->chip)
1408 return -ENOMEM;
1409
1410 *pctl->chip = mtk_gpio_chip;
1411 pctl->chip->ngpio = pctl->devdata->npins;
1412 pctl->chip->label = dev_name(&pdev->dev);
1413 pctl->chip->parent = &pdev->dev;
1414 pctl->chip->base = -1;
1415
1416 ret = gpiochip_add_data(pctl->chip, pctl);
1417 if (ret)
1418 return -EINVAL;
1419
1420
1421 ret = gpiochip_add_pin_range(pctl->chip, dev_name(&pdev->dev),
1422 0, 0, pctl->devdata->npins);
1423 if (ret) {
1424 ret = -EINVAL;
1425 goto chip_error;
1426 }
1427
1428 if (!of_property_read_bool(np, "interrupt-controller"))
1429 return 0;
1430
1431
1432 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1433 if (!res) {
1434 dev_err(&pdev->dev, "Unable to get Pinctrl resource\n");
1435 ret = -EINVAL;
1436 goto chip_error;
1437 }
1438
1439 pctl->eint_reg_base = devm_ioremap_resource(&pdev->dev, res);
1440 if (IS_ERR(pctl->eint_reg_base)) {
1441 ret = -EINVAL;
1442 goto chip_error;
1443 }
1444
1445 ports_buf = pctl->devdata->eint_offsets.ports;
1446 pctl->wake_mask = devm_kcalloc(&pdev->dev, ports_buf,
1447 sizeof(*pctl->wake_mask), GFP_KERNEL);
1448 if (!pctl->wake_mask) {
1449 ret = -ENOMEM;
1450 goto chip_error;
1451 }
1452
1453 pctl->cur_mask = devm_kcalloc(&pdev->dev, ports_buf,
1454 sizeof(*pctl->cur_mask), GFP_KERNEL);
1455 if (!pctl->cur_mask) {
1456 ret = -ENOMEM;
1457 goto chip_error;
1458 }
1459
1460 pctl->eint_dual_edges = devm_kcalloc(&pdev->dev, pctl->devdata->ap_num,
1461 sizeof(int), GFP_KERNEL);
1462 if (!pctl->eint_dual_edges) {
1463 ret = -ENOMEM;
1464 goto chip_error;
1465 }
1466
1467 irq = irq_of_parse_and_map(np, 0);
1468 if (!irq) {
1469 dev_err(&pdev->dev, "couldn't parse and map irq\n");
1470 ret = -EINVAL;
1471 goto chip_error;
1472 }
1473
1474 pctl->domain = irq_domain_add_linear(np,
1475 pctl->devdata->ap_num, &irq_domain_simple_ops, NULL);
1476 if (!pctl->domain) {
1477 dev_err(&pdev->dev, "Couldn't register IRQ domain\n");
1478 ret = -ENOMEM;
1479 goto chip_error;
1480 }
1481
1482 mtk_eint_init(pctl);
1483 for (i = 0; i < pctl->devdata->ap_num; i++) {
1484 int virq = irq_create_mapping(pctl->domain, i);
1485
1486 irq_set_chip_and_handler(virq, &mtk_pinctrl_irq_chip,
1487 handle_level_irq);
1488 irq_set_chip_data(virq, pctl);
1489 }
1490
1491 irq_set_chained_handler_and_data(irq, mtk_eint_irq_handler, pctl);
1492 return 0;
1493
1494chip_error:
1495 gpiochip_remove(pctl->chip);
1496 return ret;
1497}
1498
