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9#include <dt-bindings/pinctrl/mt65xx.h>
10#include <linux/device.h>
11#include <linux/err.h>
12#include <linux/gpio/driver.h>
13#include <linux/platform_device.h>
14#include <linux/io.h>
15#include <linux/module.h>
16#include <linux/of_irq.h>
17
18#include "mtk-eint.h"
19#include "pinctrl-mtk-common-v2.h"
20
21
22
23
24
25
26
27
28
29
30
31struct mtk_drive_desc {
32 u8 min;
33 u8 max;
34 u8 step;
35 u8 scal;
36};
37
38
39static const struct mtk_drive_desc mtk_drive[] = {
40 [DRV_GRP0] = { 4, 16, 4, 1 },
41 [DRV_GRP1] = { 4, 16, 4, 2 },
42 [DRV_GRP2] = { 2, 8, 2, 1 },
43 [DRV_GRP3] = { 2, 8, 2, 2 },
44 [DRV_GRP4] = { 2, 16, 2, 1 },
45};
46
47static void mtk_w32(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 val)
48{
49 writel_relaxed(val, pctl->base[i] + reg);
50}
51
52static u32 mtk_r32(struct mtk_pinctrl *pctl, u8 i, u32 reg)
53{
54 return readl_relaxed(pctl->base[i] + reg);
55}
56
57void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set)
58{
59 u32 val;
60
61 val = mtk_r32(pctl, i, reg);
62 val &= ~mask;
63 val |= set;
64 mtk_w32(pctl, i, reg, val);
65}
66
67static int mtk_hw_pin_field_lookup(struct mtk_pinctrl *hw,
68 const struct mtk_pin_desc *desc,
69 int field, struct mtk_pin_field *pfd)
70{
71 const struct mtk_pin_field_calc *c;
72 const struct mtk_pin_reg_calc *rc;
73 int start = 0, end, check;
74 bool found = false;
75 u32 bits;
76
77 if (hw->soc->reg_cal && hw->soc->reg_cal[field].range) {
78 rc = &hw->soc->reg_cal[field];
79 } else {
80 dev_dbg(hw->dev,
81 "Not support field %d for this soc\n", field);
82 return -ENOTSUPP;
83 }
84
85 end = rc->nranges - 1;
86
87 while (start <= end) {
88 check = (start + end) >> 1;
89 if (desc->number >= rc->range[check].s_pin
90 && desc->number <= rc->range[check].e_pin) {
91 found = true;
92 break;
93 } else if (start == end)
94 break;
95 else if (desc->number < rc->range[check].s_pin)
96 end = check - 1;
97 else
98 start = check + 1;
99 }
100
101 if (!found) {
102 dev_dbg(hw->dev, "Not support field %d for pin = %d (%s)\n",
103 field, desc->number, desc->name);
104 return -ENOTSUPP;
105 }
106
107 c = rc->range + check;
108
109 if (c->i_base > hw->nbase - 1) {
110 dev_err(hw->dev,
111 "Invalid base for field %d for pin = %d (%s)\n",
112 field, desc->number, desc->name);
113 return -EINVAL;
114 }
115
116
117
118
119
120 bits = c->fixed ? c->s_bit : c->s_bit +
121 (desc->number - c->s_pin) * (c->x_bits);
122
123
124
125
126 pfd->index = c->i_base;
127 pfd->offset = c->s_addr + c->x_addrs * (bits / c->sz_reg);
128 pfd->bitpos = bits % c->sz_reg;
129 pfd->mask = (1 << c->x_bits) - 1;
130
131
132
133
134
135 pfd->next = pfd->bitpos + c->x_bits > c->sz_reg ? c->x_addrs : 0;
136
137 return 0;
138}
139
140static int mtk_hw_pin_field_get(struct mtk_pinctrl *hw,
141 const struct mtk_pin_desc *desc,
142 int field, struct mtk_pin_field *pfd)
143{
144 if (field < 0 || field >= PINCTRL_PIN_REG_MAX) {
145 dev_err(hw->dev, "Invalid Field %d\n", field);
146 return -EINVAL;
147 }
148
149 return mtk_hw_pin_field_lookup(hw, desc, field, pfd);
150}
151
152static void mtk_hw_bits_part(struct mtk_pin_field *pf, int *h, int *l)
153{
154 *l = 32 - pf->bitpos;
155 *h = get_count_order(pf->mask) - *l;
156}
157
158static void mtk_hw_write_cross_field(struct mtk_pinctrl *hw,
159 struct mtk_pin_field *pf, int value)
160{
161 int nbits_l, nbits_h;
162
163 mtk_hw_bits_part(pf, &nbits_h, &nbits_l);
164
165 mtk_rmw(hw, pf->index, pf->offset, pf->mask << pf->bitpos,
166 (value & pf->mask) << pf->bitpos);
167
168 mtk_rmw(hw, pf->index, pf->offset + pf->next, BIT(nbits_h) - 1,
169 (value & pf->mask) >> nbits_l);
170}
171
172static void mtk_hw_read_cross_field(struct mtk_pinctrl *hw,
173 struct mtk_pin_field *pf, int *value)
174{
175 int nbits_l, nbits_h, h, l;
176
177 mtk_hw_bits_part(pf, &nbits_h, &nbits_l);
178
179 l = (mtk_r32(hw, pf->index, pf->offset)
180 >> pf->bitpos) & (BIT(nbits_l) - 1);
181 h = (mtk_r32(hw, pf->index, pf->offset + pf->next))
182 & (BIT(nbits_h) - 1);
183
184 *value = (h << nbits_l) | l;
185}
186
187int mtk_hw_set_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
188 int field, int value)
189{
190 struct mtk_pin_field pf;
191 int err;
192
193 err = mtk_hw_pin_field_get(hw, desc, field, &pf);
194 if (err)
195 return err;
196
197 if (value < 0 || value > pf.mask)
198 return -EINVAL;
199
200 if (!pf.next)
201 mtk_rmw(hw, pf.index, pf.offset, pf.mask << pf.bitpos,
202 (value & pf.mask) << pf.bitpos);
203 else
204 mtk_hw_write_cross_field(hw, &pf, value);
205
206 return 0;
207}
208EXPORT_SYMBOL_GPL(mtk_hw_set_value);
209
210int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
211 int field, int *value)
212{
213 struct mtk_pin_field pf;
214 int err;
215
216 err = mtk_hw_pin_field_get(hw, desc, field, &pf);
217 if (err)
218 return err;
219
220 if (!pf.next)
221 *value = (mtk_r32(hw, pf.index, pf.offset)
222 >> pf.bitpos) & pf.mask;
223 else
224 mtk_hw_read_cross_field(hw, &pf, value);
225
226 return 0;
227}
228EXPORT_SYMBOL_GPL(mtk_hw_get_value);
229
230static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw, unsigned long eint_n)
231{
232 const struct mtk_pin_desc *desc;
233 int i = 0;
234
235 desc = (const struct mtk_pin_desc *)hw->soc->pins;
236
237 while (i < hw->soc->npins) {
238 if (desc[i].eint.eint_n == eint_n)
239 return desc[i].number;
240 i++;
241 }
242
243 return EINT_NA;
244}
245
246
247
248
249
250
251
252
253
254
255bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n)
256{
257 const struct mtk_pin_desc *desc;
258 bool virt_gpio = false;
259
260 desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
261
262
263 if (desc->eint.eint_m == NO_EINT_SUPPORT)
264 return virt_gpio;
265
266 if (desc->funcs && !desc->funcs[desc->eint.eint_m].name)
267 virt_gpio = true;
268
269 return virt_gpio;
270}
271EXPORT_SYMBOL_GPL(mtk_is_virt_gpio);
272
273static int mtk_xt_get_gpio_n(void *data, unsigned long eint_n,
274 unsigned int *gpio_n,
275 struct gpio_chip **gpio_chip)
276{
277 struct mtk_pinctrl *hw = (struct mtk_pinctrl *)data;
278 const struct mtk_pin_desc *desc;
279
280 desc = (const struct mtk_pin_desc *)hw->soc->pins;
281 *gpio_chip = &hw->chip;
282
283
284 if (desc[eint_n].eint.eint_n == eint_n)
285 *gpio_n = eint_n;
286 else
287 *gpio_n = mtk_xt_find_eint_num(hw, eint_n);
288
289 return *gpio_n == EINT_NA ? -EINVAL : 0;
290}
291
292static int mtk_xt_get_gpio_state(void *data, unsigned long eint_n)
293{
294 struct mtk_pinctrl *hw = (struct mtk_pinctrl *)data;
295 const struct mtk_pin_desc *desc;
296 struct gpio_chip *gpio_chip;
297 unsigned int gpio_n;
298 int value, err;
299
300 err = mtk_xt_get_gpio_n(hw, eint_n, &gpio_n, &gpio_chip);
301 if (err)
302 return err;
303
304 desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
305
306 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DI, &value);
307 if (err)
308 return err;
309
310 return !!value;
311}
312
313static int mtk_xt_set_gpio_as_eint(void *data, unsigned long eint_n)
314{
315 struct mtk_pinctrl *hw = (struct mtk_pinctrl *)data;
316 const struct mtk_pin_desc *desc;
317 struct gpio_chip *gpio_chip;
318 unsigned int gpio_n;
319 int err;
320
321 err = mtk_xt_get_gpio_n(hw, eint_n, &gpio_n, &gpio_chip);
322 if (err)
323 return err;
324
325 if (mtk_is_virt_gpio(hw, gpio_n))
326 return 0;
327
328 desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
329
330 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
331 desc->eint.eint_m);
332 if (err)
333 return err;
334
335 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR, MTK_INPUT);
336 if (err)
337 return err;
338
339 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, MTK_ENABLE);
340
341
342
343
344
345
346 if (err && err != -ENOTSUPP)
347 return err;
348
349 return 0;
350}
351
352static const struct mtk_eint_xt mtk_eint_xt = {
353 .get_gpio_n = mtk_xt_get_gpio_n,
354 .get_gpio_state = mtk_xt_get_gpio_state,
355 .set_gpio_as_eint = mtk_xt_set_gpio_as_eint,
356};
357
358int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev)
359{
360 struct device_node *np = pdev->dev.of_node;
361 int ret;
362
363 if (!IS_ENABLED(CONFIG_EINT_MTK))
364 return 0;
365
366 if (!of_property_read_bool(np, "interrupt-controller"))
367 return -ENODEV;
368
369 hw->eint = devm_kzalloc(hw->dev, sizeof(*hw->eint), GFP_KERNEL);
370 if (!hw->eint)
371 return -ENOMEM;
372
373 hw->eint->base = devm_platform_ioremap_resource_byname(pdev, "eint");
374 if (IS_ERR(hw->eint->base)) {
375 ret = PTR_ERR(hw->eint->base);
376 goto err_free_eint;
377 }
378
379 hw->eint->irq = irq_of_parse_and_map(np, 0);
380 if (!hw->eint->irq) {
381 ret = -EINVAL;
382 goto err_free_eint;
383 }
384
385 if (!hw->soc->eint_hw) {
386 ret = -ENODEV;
387 goto err_free_eint;
388 }
389
390 hw->eint->dev = &pdev->dev;
391 hw->eint->hw = hw->soc->eint_hw;
392 hw->eint->pctl = hw;
393 hw->eint->gpio_xlate = &mtk_eint_xt;
394
395 return mtk_eint_do_init(hw->eint);
396
397err_free_eint:
398 devm_kfree(hw->dev, hw->eint);
399 hw->eint = NULL;
400 return ret;
401}
402EXPORT_SYMBOL_GPL(mtk_build_eint);
403
404
405int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw,
406 const struct mtk_pin_desc *desc)
407{
408 int err;
409
410 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU,
411 MTK_DISABLE);
412 if (err)
413 return err;
414
415 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD,
416 MTK_DISABLE);
417 if (err)
418 return err;
419
420 return 0;
421}
422EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set);
423
424int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw,
425 const struct mtk_pin_desc *desc, int *res)
426{
427 int v, v2;
428 int err;
429
430 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &v);
431 if (err)
432 return err;
433
434 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &v2);
435 if (err)
436 return err;
437
438 if (v == MTK_ENABLE || v2 == MTK_ENABLE)
439 return -EINVAL;
440
441 *res = 1;
442
443 return 0;
444}
445EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get);
446
447int mtk_pinconf_bias_set(struct mtk_pinctrl *hw,
448 const struct mtk_pin_desc *desc, bool pullup)
449{
450 int err, arg;
451
452 arg = pullup ? 1 : 2;
453
454 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, arg & 1);
455 if (err)
456 return err;
457
458 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD,
459 !!(arg & 2));
460 if (err)
461 return err;
462
463 return 0;
464}
465EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set);
466
467int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
468 const struct mtk_pin_desc *desc, bool pullup, int *res)
469{
470 int reg, err, v;
471
472 reg = pullup ? PINCTRL_PIN_REG_PU : PINCTRL_PIN_REG_PD;
473
474 err = mtk_hw_get_value(hw, desc, reg, &v);
475 if (err)
476 return err;
477
478 if (!v)
479 return -EINVAL;
480
481 *res = 1;
482
483 return 0;
484}
485EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get);
486
487
488int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
489 const struct mtk_pin_desc *desc)
490{
491 int err;
492
493 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
494 MTK_DISABLE);
495 if (err)
496 return err;
497
498 return 0;
499}
500EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set_rev1);
501
502int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
503 const struct mtk_pin_desc *desc, int *res)
504{
505 int v, err;
506
507 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, &v);
508 if (err)
509 return err;
510
511 if (v == MTK_ENABLE)
512 return -EINVAL;
513
514 *res = 1;
515
516 return 0;
517}
518EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get_rev1);
519
520int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
521 const struct mtk_pin_desc *desc, bool pullup)
522{
523 int err, arg;
524
525 arg = pullup ? MTK_PULLUP : MTK_PULLDOWN;
526
527 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
528 MTK_ENABLE);
529 if (err)
530 return err;
531
532 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, arg);
533 if (err)
534 return err;
535
536 return 0;
537}
538EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_rev1);
539
540int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
541 const struct mtk_pin_desc *desc, bool pullup,
542 int *res)
543{
544 int err, v;
545
546 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, &v);
547 if (err)
548 return err;
549
550 if (v == MTK_DISABLE)
551 return -EINVAL;
552
553 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, &v);
554 if (err)
555 return err;
556
557 if (pullup ^ (v == MTK_PULLUP))
558 return -EINVAL;
559
560 *res = 1;
561
562 return 0;
563}
564EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_rev1);
565
566
567
568
569
570
571static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw,
572 const struct mtk_pin_desc *desc,
573 u32 pullup, u32 arg)
574{
575 int err, pu, pd;
576
577 if (arg == MTK_DISABLE) {
578 pu = 0;
579 pd = 0;
580 } else if ((arg == MTK_ENABLE) && pullup) {
581 pu = 1;
582 pd = 0;
583 } else if ((arg == MTK_ENABLE) && !pullup) {
584 pu = 0;
585 pd = 1;
586 } else {
587 err = -EINVAL;
588 goto out;
589 }
590
591 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu);
592 if (err)
593 goto out;
594
595 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd);
596
597out:
598 return err;
599}
600
601static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw,
602 const struct mtk_pin_desc *desc,
603 u32 pullup, u32 arg)
604{
605 int err, enable;
606
607 if (arg == MTK_DISABLE)
608 enable = 0;
609 else if (arg == MTK_ENABLE)
610 enable = 1;
611 else {
612 err = -EINVAL;
613 goto out;
614 }
615
616 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable);
617 if (err)
618 goto out;
619
620 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup);
621
622out:
623 return err;
624}
625
626static int mtk_pinconf_bias_set_pupd_r1_r0(struct mtk_pinctrl *hw,
627 const struct mtk_pin_desc *desc,
628 u32 pullup, u32 arg)
629{
630 int err, r0, r1;
631
632 if ((arg == MTK_DISABLE) || (arg == MTK_PUPD_SET_R1R0_00)) {
633 pullup = 0;
634 r0 = 0;
635 r1 = 0;
636 } else if (arg == MTK_PUPD_SET_R1R0_01) {
637 r0 = 1;
638 r1 = 0;
639 } else if (arg == MTK_PUPD_SET_R1R0_10) {
640 r0 = 0;
641 r1 = 1;
642 } else if (arg == MTK_PUPD_SET_R1R0_11) {
643 r0 = 1;
644 r1 = 1;
645 } else {
646 err = -EINVAL;
647 goto out;
648 }
649
650
651 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PUPD, !pullup);
652 if (err)
653 goto out;
654
655 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R0, r0);
656 if (err)
657 goto out;
658
659 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R1, r1);
660
661out:
662 return err;
663}
664
665static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw,
666 const struct mtk_pin_desc *desc,
667 u32 *pullup, u32 *enable)
668{
669 int err, pu, pd;
670
671 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &pu);
672 if (err)
673 goto out;
674
675 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd);
676 if (err)
677 goto out;
678
679 if (pu == 0 && pd == 0) {
680 *pullup = 0;
681 *enable = MTK_DISABLE;
682 } else if (pu == 1 && pd == 0) {
683 *pullup = 1;
684 *enable = MTK_ENABLE;
685 } else if (pu == 0 && pd == 1) {
686 *pullup = 0;
687 *enable = MTK_ENABLE;
688 } else
689 err = -EINVAL;
690
691out:
692 return err;
693}
694
695static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw,
696 const struct mtk_pin_desc *desc,
697 u32 *pullup, u32 *enable)
698{
699 int err;
700
701 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLSEL, pullup);
702 if (err)
703 goto out;
704
705 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PULLEN, enable);
706
707out:
708 return err;
709}
710
711static int mtk_pinconf_bias_get_pupd_r1_r0(struct mtk_pinctrl *hw,
712 const struct mtk_pin_desc *desc,
713 u32 *pullup, u32 *enable)
714{
715 int err, r0, r1;
716
717 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PUPD, pullup);
718 if (err)
719 goto out;
720
721 *pullup = !(*pullup);
722
723 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R0, &r0);
724 if (err)
725 goto out;
726
727 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R1, &r1);
728 if (err)
729 goto out;
730
731 if ((r1 == 0) && (r0 == 0))
732 *enable = MTK_PUPD_SET_R1R0_00;
733 else if ((r1 == 0) && (r0 == 1))
734 *enable = MTK_PUPD_SET_R1R0_01;
735 else if ((r1 == 1) && (r0 == 0))
736 *enable = MTK_PUPD_SET_R1R0_10;
737 else if ((r1 == 1) && (r0 == 1))
738 *enable = MTK_PUPD_SET_R1R0_11;
739 else
740 err = -EINVAL;
741
742out:
743 return err;
744}
745
746int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw,
747 const struct mtk_pin_desc *desc,
748 u32 pullup, u32 arg)
749{
750 int err;
751
752 err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg);
753 if (!err)
754 goto out;
755
756 err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc, pullup, arg);
757 if (!err)
758 goto out;
759
760 err = mtk_pinconf_bias_set_pupd_r1_r0(hw, desc, pullup, arg);
761
762out:
763 return err;
764}
765EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_combo);
766
767int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw,
768 const struct mtk_pin_desc *desc,
769 u32 *pullup, u32 *enable)
770{
771 int err;
772
773 err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable);
774 if (!err)
775 goto out;
776
777 err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc, pullup, enable);
778 if (!err)
779 goto out;
780
781 err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable);
782
783out:
784 return err;
785}
786EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_combo);
787
788
789int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
790 const struct mtk_pin_desc *desc, u32 arg)
791{
792 const struct mtk_drive_desc *tb;
793 int err = -ENOTSUPP;
794
795 tb = &mtk_drive[desc->drv_n];
796
797
798
799
800
801 if ((arg >= tb->min && arg <= tb->max) && !(arg % tb->step)) {
802 arg = (arg / tb->step - 1) * tb->scal;
803 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_E4,
804 arg & 0x1);
805 if (err)
806 return err;
807
808 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_E8,
809 (arg & 0x2) >> 1);
810 if (err)
811 return err;
812 }
813
814 return err;
815}
816EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set);
817
818int mtk_pinconf_drive_get(struct mtk_pinctrl *hw,
819 const struct mtk_pin_desc *desc, int *val)
820{
821 const struct mtk_drive_desc *tb;
822 int err, val1, val2;
823
824 tb = &mtk_drive[desc->drv_n];
825
826 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_E4, &val1);
827 if (err)
828 return err;
829
830 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_E8, &val2);
831 if (err)
832 return err;
833
834
835
836
837 *val = (((val2 << 1) + val1) / tb->scal + 1) * tb->step;
838
839 return 0;
840}
841EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get);
842
843
844int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw,
845 const struct mtk_pin_desc *desc, u32 arg)
846{
847 const struct mtk_drive_desc *tb;
848 int err = -ENOTSUPP;
849
850 tb = &mtk_drive[desc->drv_n];
851
852 if ((arg >= tb->min && arg <= tb->max) && !(arg % tb->step)) {
853 arg = (arg / tb->step - 1) * tb->scal;
854
855 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV,
856 arg);
857 if (err)
858 return err;
859 }
860
861 return err;
862}
863EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_rev1);
864
865int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw,
866 const struct mtk_pin_desc *desc, int *val)
867{
868 const struct mtk_drive_desc *tb;
869 int err, val1;
870
871 tb = &mtk_drive[desc->drv_n];
872
873 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, &val1);
874 if (err)
875 return err;
876
877 *val = ((val1 & 0x7) / tb->scal + 1) * tb->step;
878
879 return 0;
880}
881EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_rev1);
882
883int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw,
884 const struct mtk_pin_desc *desc, u32 arg)
885{
886 return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV, arg);
887}
888EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_raw);
889
890int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw,
891 const struct mtk_pin_desc *desc, int *val)
892{
893 return mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, val);
894}
895EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_raw);
896
897int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
898 const struct mtk_pin_desc *desc, bool pullup,
899 u32 arg)
900{
901 int err;
902
903
904
905
906
907
908 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R0, arg & 1);
909 if (err)
910 return 0;
911
912 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_R1,
913 !!(arg & 2));
914 if (err)
915 return 0;
916
917 arg = pullup ? 0 : 1;
918
919 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PUPD, arg);
920
921
922
923
924 if (err == -ENOTSUPP) {
925 if (hw->soc->bias_set) {
926 err = hw->soc->bias_set(hw, desc, pullup);
927 if (err)
928 return err;
929 } else {
930 return -ENOTSUPP;
931 }
932 }
933
934 return err;
935}
936EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_set);
937
938int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw,
939 const struct mtk_pin_desc *desc, bool pullup,
940 u32 *val)
941{
942 u32 t, t2;
943 int err;
944
945 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PUPD, &t);
946
947
948
949
950 if (err == -ENOTSUPP) {
951 if (hw->soc->bias_get) {
952 err = hw->soc->bias_get(hw, desc, pullup, val);
953 if (err)
954 return err;
955 } else {
956 return -ENOTSUPP;
957 }
958 } else {
959
960 if (err)
961 return err;
962
963 if (pullup ^ !t)
964 return -EINVAL;
965 }
966
967 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R0, &t);
968 if (err)
969 return err;
970
971 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_R1, &t2);
972 if (err)
973 return err;
974
975 *val = (t | t2 << 1) & 0x7;
976
977 return 0;
978}
979EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_get);
980
981int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw,
982 const struct mtk_pin_desc *desc, u32 arg)
983{
984 int err;
985 int en = arg & 1;
986 int e0 = !!(arg & 2);
987 int e1 = !!(arg & 4);
988
989 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_EN, en);
990 if (err)
991 return err;
992
993 if (!en)
994 return err;
995
996 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_E0, e0);
997 if (err)
998 return err;
999
1000 err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_E1, e1);
1001 if (err)
1002 return err;
1003
1004 return err;
1005}
1006EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_set);
1007
1008int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
1009 const struct mtk_pin_desc *desc, u32 *val)
1010{
1011 u32 en, e0, e1;
1012 int err;
1013
1014 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_EN, &en);
1015 if (err)
1016 return err;
1017
1018 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_E0, &e0);
1019 if (err)
1020 return err;
1021
1022 err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_E1, &e1);
1023 if (err)
1024 return err;
1025
1026 *val = (en | e0 << 1 | e1 << 2) & 0x7;
1027
1028 return 0;
1029}
1030EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_get);
1031
1032MODULE_LICENSE("GPL v2");
1033MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
1034MODULE_DESCRIPTION("Pin configuration library module for mediatek SoCs");
1035