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9#include <linux/platform_device.h>
10#include <linux/slab.h>
11#include <linux/io.h>
12#include <linux/of.h>
13#include <linux/of_address.h>
14#include <linux/of_platform.h>
15#include <linux/err.h>
16#include <linux/gpio/driver.h>
17#include <linux/pinctrl/machine.h>
18#include <linux/pinctrl/pinconf.h>
19#include <linux/pinctrl/pinctrl.h>
20#include <linux/pinctrl/pinmux.h>
21#include <linux/mfd/syscon.h>
22#include <linux/regmap.h>
23
24#include "pinctrl-mvebu.h"
25
26#define MPPS_PER_REG 8
27#define MPP_BITS 4
28#define MPP_MASK 0xf
29
30struct mvebu_pinctrl_function {
31 const char *name;
32 const char **groups;
33 unsigned num_groups;
34};
35
36struct mvebu_pinctrl_group {
37 const char *name;
38 const struct mvebu_mpp_ctrl *ctrl;
39 struct mvebu_mpp_ctrl_data *data;
40 struct mvebu_mpp_ctrl_setting *settings;
41 unsigned num_settings;
42 unsigned gid;
43 unsigned *pins;
44 unsigned npins;
45};
46
47struct mvebu_pinctrl {
48 struct device *dev;
49 struct pinctrl_dev *pctldev;
50 struct pinctrl_desc desc;
51 struct mvebu_pinctrl_group *groups;
52 unsigned num_groups;
53 struct mvebu_pinctrl_function *functions;
54 unsigned num_functions;
55 u8 variant;
56};
57
58int mvebu_mmio_mpp_ctrl_get(struct mvebu_mpp_ctrl_data *data,
59 unsigned int pid, unsigned long *config)
60{
61 unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
62 unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
63
64 *config = (readl(data->base + off) >> shift) & MVEBU_MPP_MASK;
65
66 return 0;
67}
68
69int mvebu_mmio_mpp_ctrl_set(struct mvebu_mpp_ctrl_data *data,
70 unsigned int pid, unsigned long config)
71{
72 unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
73 unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
74 unsigned long reg;
75
76 reg = readl(data->base + off) & ~(MVEBU_MPP_MASK << shift);
77 writel(reg | (config << shift), data->base + off);
78
79 return 0;
80}
81
82static struct mvebu_pinctrl_group *mvebu_pinctrl_find_group_by_pid(
83 struct mvebu_pinctrl *pctl, unsigned pid)
84{
85 unsigned n;
86 for (n = 0; n < pctl->num_groups; n++) {
87 if (pid >= pctl->groups[n].pins[0] &&
88 pid < pctl->groups[n].pins[0] +
89 pctl->groups[n].npins)
90 return &pctl->groups[n];
91 }
92 return NULL;
93}
94
95static struct mvebu_pinctrl_group *mvebu_pinctrl_find_group_by_name(
96 struct mvebu_pinctrl *pctl, const char *name)
97{
98 unsigned n;
99 for (n = 0; n < pctl->num_groups; n++) {
100 if (strcmp(name, pctl->groups[n].name) == 0)
101 return &pctl->groups[n];
102 }
103 return NULL;
104}
105
106static struct mvebu_mpp_ctrl_setting *mvebu_pinctrl_find_setting_by_val(
107 struct mvebu_pinctrl *pctl, struct mvebu_pinctrl_group *grp,
108 unsigned long config)
109{
110 unsigned n;
111 for (n = 0; n < grp->num_settings; n++) {
112 if (config == grp->settings[n].val) {
113 if (!pctl->variant || (pctl->variant &
114 grp->settings[n].variant))
115 return &grp->settings[n];
116 }
117 }
118 return NULL;
119}
120
121static struct mvebu_mpp_ctrl_setting *mvebu_pinctrl_find_setting_by_name(
122 struct mvebu_pinctrl *pctl, struct mvebu_pinctrl_group *grp,
123 const char *name)
124{
125 unsigned n;
126 for (n = 0; n < grp->num_settings; n++) {
127 if (strcmp(name, grp->settings[n].name) == 0) {
128 if (!pctl->variant || (pctl->variant &
129 grp->settings[n].variant))
130 return &grp->settings[n];
131 }
132 }
133 return NULL;
134}
135
136static struct mvebu_mpp_ctrl_setting *mvebu_pinctrl_find_gpio_setting(
137 struct mvebu_pinctrl *pctl, struct mvebu_pinctrl_group *grp)
138{
139 unsigned n;
140 for (n = 0; n < grp->num_settings; n++) {
141 if (grp->settings[n].flags &
142 (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
143 if (!pctl->variant || (pctl->variant &
144 grp->settings[n].variant))
145 return &grp->settings[n];
146 }
147 }
148 return NULL;
149}
150
151static struct mvebu_pinctrl_function *mvebu_pinctrl_find_function_by_name(
152 struct mvebu_pinctrl *pctl, const char *name)
153{
154 unsigned n;
155 for (n = 0; n < pctl->num_functions; n++) {
156 if (strcmp(name, pctl->functions[n].name) == 0)
157 return &pctl->functions[n];
158 }
159 return NULL;
160}
161
162static int mvebu_pinconf_group_get(struct pinctrl_dev *pctldev,
163 unsigned gid, unsigned long *config)
164{
165 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
166 struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
167
168 if (!grp->ctrl)
169 return -EINVAL;
170
171 return grp->ctrl->mpp_get(grp->data, grp->pins[0], config);
172}
173
174static int mvebu_pinconf_group_set(struct pinctrl_dev *pctldev,
175 unsigned gid, unsigned long *configs,
176 unsigned num_configs)
177{
178 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
179 struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
180 int i, ret;
181
182 if (!grp->ctrl)
183 return -EINVAL;
184
185 for (i = 0; i < num_configs; i++) {
186 ret = grp->ctrl->mpp_set(grp->data, grp->pins[0], configs[i]);
187 if (ret)
188 return ret;
189 }
190
191 return 0;
192}
193
194static void mvebu_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
195 struct seq_file *s, unsigned gid)
196{
197 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
198 struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
199 struct mvebu_mpp_ctrl_setting *curr;
200 unsigned long config;
201 unsigned n;
202
203 if (mvebu_pinconf_group_get(pctldev, gid, &config))
204 return;
205
206 curr = mvebu_pinctrl_find_setting_by_val(pctl, grp, config);
207
208 if (curr) {
209 seq_printf(s, "current: %s", curr->name);
210 if (curr->subname)
211 seq_printf(s, "(%s)", curr->subname);
212 if (curr->flags & (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
213 seq_putc(s, '(');
214 if (curr->flags & MVEBU_SETTING_GPI)
215 seq_putc(s, 'i');
216 if (curr->flags & MVEBU_SETTING_GPO)
217 seq_putc(s, 'o');
218 seq_putc(s, ')');
219 }
220 } else {
221 seq_puts(s, "current: UNKNOWN");
222 }
223
224 if (grp->num_settings > 1) {
225 seq_puts(s, ", available = [");
226 for (n = 0; n < grp->num_settings; n++) {
227 if (curr == &grp->settings[n])
228 continue;
229
230
231 if (pctl->variant &&
232 !(pctl->variant & grp->settings[n].variant))
233 continue;
234
235 seq_printf(s, " %s", grp->settings[n].name);
236 if (grp->settings[n].subname)
237 seq_printf(s, "(%s)", grp->settings[n].subname);
238 if (grp->settings[n].flags &
239 (MVEBU_SETTING_GPO | MVEBU_SETTING_GPI)) {
240 seq_putc(s, '(');
241 if (grp->settings[n].flags & MVEBU_SETTING_GPI)
242 seq_putc(s, 'i');
243 if (grp->settings[n].flags & MVEBU_SETTING_GPO)
244 seq_putc(s, 'o');
245 seq_putc(s, ')');
246 }
247 }
248 seq_puts(s, " ]");
249 }
250}
251
252static const struct pinconf_ops mvebu_pinconf_ops = {
253 .pin_config_group_get = mvebu_pinconf_group_get,
254 .pin_config_group_set = mvebu_pinconf_group_set,
255 .pin_config_group_dbg_show = mvebu_pinconf_group_dbg_show,
256};
257
258static int mvebu_pinmux_get_funcs_count(struct pinctrl_dev *pctldev)
259{
260 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
261
262 return pctl->num_functions;
263}
264
265static const char *mvebu_pinmux_get_func_name(struct pinctrl_dev *pctldev,
266 unsigned fid)
267{
268 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
269
270 return pctl->functions[fid].name;
271}
272
273static int mvebu_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned fid,
274 const char * const **groups,
275 unsigned * const num_groups)
276{
277 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
278
279 *groups = pctl->functions[fid].groups;
280 *num_groups = pctl->functions[fid].num_groups;
281 return 0;
282}
283
284static int mvebu_pinmux_set(struct pinctrl_dev *pctldev, unsigned fid,
285 unsigned gid)
286{
287 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
288 struct mvebu_pinctrl_function *func = &pctl->functions[fid];
289 struct mvebu_pinctrl_group *grp = &pctl->groups[gid];
290 struct mvebu_mpp_ctrl_setting *setting;
291 int ret;
292 unsigned long config;
293
294 setting = mvebu_pinctrl_find_setting_by_name(pctl, grp,
295 func->name);
296 if (!setting) {
297 dev_err(pctl->dev,
298 "unable to find setting %s in group %s\n",
299 func->name, func->groups[gid]);
300 return -EINVAL;
301 }
302
303 config = setting->val;
304 ret = mvebu_pinconf_group_set(pctldev, grp->gid, &config, 1);
305 if (ret) {
306 dev_err(pctl->dev, "cannot set group %s to %s\n",
307 func->groups[gid], func->name);
308 return ret;
309 }
310
311 return 0;
312}
313
314static int mvebu_pinmux_gpio_request_enable(struct pinctrl_dev *pctldev,
315 struct pinctrl_gpio_range *range, unsigned offset)
316{
317 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
318 struct mvebu_pinctrl_group *grp;
319 struct mvebu_mpp_ctrl_setting *setting;
320 unsigned long config;
321
322 grp = mvebu_pinctrl_find_group_by_pid(pctl, offset);
323 if (!grp)
324 return -EINVAL;
325
326 if (grp->ctrl->mpp_gpio_req)
327 return grp->ctrl->mpp_gpio_req(grp->data, offset);
328
329 setting = mvebu_pinctrl_find_gpio_setting(pctl, grp);
330 if (!setting)
331 return -ENOTSUPP;
332
333 config = setting->val;
334
335 return mvebu_pinconf_group_set(pctldev, grp->gid, &config, 1);
336}
337
338static int mvebu_pinmux_gpio_set_direction(struct pinctrl_dev *pctldev,
339 struct pinctrl_gpio_range *range, unsigned offset, bool input)
340{
341 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
342 struct mvebu_pinctrl_group *grp;
343 struct mvebu_mpp_ctrl_setting *setting;
344
345 grp = mvebu_pinctrl_find_group_by_pid(pctl, offset);
346 if (!grp)
347 return -EINVAL;
348
349 if (grp->ctrl->mpp_gpio_dir)
350 return grp->ctrl->mpp_gpio_dir(grp->data, offset, input);
351
352 setting = mvebu_pinctrl_find_gpio_setting(pctl, grp);
353 if (!setting)
354 return -ENOTSUPP;
355
356 if ((input && (setting->flags & MVEBU_SETTING_GPI)) ||
357 (!input && (setting->flags & MVEBU_SETTING_GPO)))
358 return 0;
359
360 return -ENOTSUPP;
361}
362
363static const struct pinmux_ops mvebu_pinmux_ops = {
364 .get_functions_count = mvebu_pinmux_get_funcs_count,
365 .get_function_name = mvebu_pinmux_get_func_name,
366 .get_function_groups = mvebu_pinmux_get_groups,
367 .gpio_request_enable = mvebu_pinmux_gpio_request_enable,
368 .gpio_set_direction = mvebu_pinmux_gpio_set_direction,
369 .set_mux = mvebu_pinmux_set,
370};
371
372static int mvebu_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
373{
374 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
375 return pctl->num_groups;
376}
377
378static const char *mvebu_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
379 unsigned gid)
380{
381 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
382 return pctl->groups[gid].name;
383}
384
385static int mvebu_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
386 unsigned gid, const unsigned **pins,
387 unsigned *num_pins)
388{
389 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
390 *pins = pctl->groups[gid].pins;
391 *num_pins = pctl->groups[gid].npins;
392 return 0;
393}
394
395static int mvebu_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
396 struct device_node *np,
397 struct pinctrl_map **map,
398 unsigned *num_maps)
399{
400 struct mvebu_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
401 struct property *prop;
402 const char *function;
403 const char *group;
404 int ret, nmaps, n;
405
406 *map = NULL;
407 *num_maps = 0;
408
409 ret = of_property_read_string(np, "marvell,function", &function);
410 if (ret) {
411 dev_err(pctl->dev,
412 "missing marvell,function in node %pOFn\n", np);
413 return 0;
414 }
415
416 nmaps = of_property_count_strings(np, "marvell,pins");
417 if (nmaps < 0) {
418 dev_err(pctl->dev,
419 "missing marvell,pins in node %pOFn\n", np);
420 return 0;
421 }
422
423 *map = kmalloc_array(nmaps, sizeof(**map), GFP_KERNEL);
424 if (!*map)
425 return -ENOMEM;
426
427 n = 0;
428 of_property_for_each_string(np, "marvell,pins", prop, group) {
429 struct mvebu_pinctrl_group *grp =
430 mvebu_pinctrl_find_group_by_name(pctl, group);
431
432 if (!grp) {
433 dev_err(pctl->dev, "unknown pin %s", group);
434 continue;
435 }
436
437 if (!mvebu_pinctrl_find_setting_by_name(pctl, grp, function)) {
438 dev_err(pctl->dev, "unsupported function %s on pin %s",
439 function, group);
440 continue;
441 }
442
443 (*map)[n].type = PIN_MAP_TYPE_MUX_GROUP;
444 (*map)[n].data.mux.group = group;
445 (*map)[n].data.mux.function = function;
446 n++;
447 }
448
449 *num_maps = nmaps;
450
451 return 0;
452}
453
454static void mvebu_pinctrl_dt_free_map(struct pinctrl_dev *pctldev,
455 struct pinctrl_map *map, unsigned num_maps)
456{
457 kfree(map);
458}
459
460static const struct pinctrl_ops mvebu_pinctrl_ops = {
461 .get_groups_count = mvebu_pinctrl_get_groups_count,
462 .get_group_name = mvebu_pinctrl_get_group_name,
463 .get_group_pins = mvebu_pinctrl_get_group_pins,
464 .dt_node_to_map = mvebu_pinctrl_dt_node_to_map,
465 .dt_free_map = mvebu_pinctrl_dt_free_map,
466};
467
468static int _add_function(struct mvebu_pinctrl_function *funcs, int *funcsize,
469 const char *name)
470{
471 if (*funcsize <= 0)
472 return -EOVERFLOW;
473
474 while (funcs->num_groups) {
475
476 if (strcmp(funcs->name, name) == 0) {
477 funcs->num_groups++;
478 return -EEXIST;
479 }
480 funcs++;
481 }
482
483
484 funcs->name = name;
485 funcs->num_groups = 1;
486 (*funcsize)--;
487
488 return 0;
489}
490
491static int mvebu_pinctrl_build_functions(struct platform_device *pdev,
492 struct mvebu_pinctrl *pctl)
493{
494 struct mvebu_pinctrl_function *funcs;
495 int num = 0, funcsize = pctl->desc.npins;
496 int n, s;
497
498
499
500 funcs = devm_kcalloc(&pdev->dev,
501 funcsize, sizeof(struct mvebu_pinctrl_function),
502 GFP_KERNEL);
503 if (!funcs)
504 return -ENOMEM;
505
506 for (n = 0; n < pctl->num_groups; n++) {
507 struct mvebu_pinctrl_group *grp = &pctl->groups[n];
508 for (s = 0; s < grp->num_settings; s++) {
509 int ret;
510
511
512 if (pctl->variant &&
513 !(pctl->variant & grp->settings[s].variant))
514 continue;
515
516
517 ret = _add_function(funcs, &funcsize,
518 grp->settings[s].name);
519 if (ret == -EOVERFLOW)
520 dev_err(&pdev->dev,
521 "More functions than pins(%d)\n",
522 pctl->desc.npins);
523 if (ret < 0)
524 continue;
525
526 num++;
527 }
528 }
529
530 pctl->num_functions = num;
531 pctl->functions = funcs;
532
533 for (n = 0; n < pctl->num_groups; n++) {
534 struct mvebu_pinctrl_group *grp = &pctl->groups[n];
535 for (s = 0; s < grp->num_settings; s++) {
536 struct mvebu_pinctrl_function *f;
537 const char **groups;
538
539
540 if (pctl->variant &&
541 !(pctl->variant & grp->settings[s].variant))
542 continue;
543
544 f = mvebu_pinctrl_find_function_by_name(pctl,
545 grp->settings[s].name);
546
547
548 if (!f->groups) {
549 f->groups = devm_kcalloc(&pdev->dev,
550 f->num_groups,
551 sizeof(char *),
552 GFP_KERNEL);
553 if (!f->groups)
554 return -ENOMEM;
555 }
556
557
558 groups = f->groups;
559 while (*groups)
560 groups++;
561 *groups = grp->name;
562 }
563 }
564
565 return 0;
566}
567
568int mvebu_pinctrl_probe(struct platform_device *pdev)
569{
570 struct mvebu_pinctrl_soc_info *soc = dev_get_platdata(&pdev->dev);
571 struct mvebu_pinctrl *pctl;
572 struct pinctrl_pin_desc *pdesc;
573 unsigned gid, n, k;
574 unsigned size, noname = 0;
575 char *noname_buf;
576 void *p;
577 int ret;
578
579 if (!soc || !soc->controls || !soc->modes) {
580 dev_err(&pdev->dev, "wrong pinctrl soc info\n");
581 return -EINVAL;
582 }
583
584 pctl = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_pinctrl),
585 GFP_KERNEL);
586 if (!pctl)
587 return -ENOMEM;
588
589 pctl->desc.name = dev_name(&pdev->dev);
590 pctl->desc.owner = THIS_MODULE;
591 pctl->desc.pctlops = &mvebu_pinctrl_ops;
592 pctl->desc.pmxops = &mvebu_pinmux_ops;
593 pctl->desc.confops = &mvebu_pinconf_ops;
594 pctl->variant = soc->variant;
595 pctl->dev = &pdev->dev;
596 platform_set_drvdata(pdev, pctl);
597
598
599
600 pctl->num_groups = 0;
601 pctl->desc.npins = 0;
602 for (n = 0; n < soc->ncontrols; n++) {
603 const struct mvebu_mpp_ctrl *ctrl = &soc->controls[n];
604
605 pctl->desc.npins += ctrl->npins;
606
607 for (k = 0; k < ctrl->npins; k++)
608 ctrl->pins[k] = ctrl->pid + k;
609
610
611
612
613
614
615 if (!ctrl->name) {
616 pctl->num_groups += ctrl->npins;
617 noname += ctrl->npins;
618 } else {
619 pctl->num_groups += 1;
620 }
621 }
622
623 pdesc = devm_kcalloc(&pdev->dev,
624 pctl->desc.npins,
625 sizeof(struct pinctrl_pin_desc),
626 GFP_KERNEL);
627 if (!pdesc)
628 return -ENOMEM;
629
630 for (n = 0; n < pctl->desc.npins; n++)
631 pdesc[n].number = n;
632 pctl->desc.pins = pdesc;
633
634
635
636
637 size = pctl->num_groups * sizeof(*pctl->groups) + noname * 8;
638 p = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
639 if (!p)
640 return -ENOMEM;
641
642 pctl->groups = p;
643 noname_buf = p + pctl->num_groups * sizeof(*pctl->groups);
644
645
646 gid = 0;
647 for (n = 0; n < soc->ncontrols; n++) {
648 const struct mvebu_mpp_ctrl *ctrl = &soc->controls[n];
649 struct mvebu_mpp_ctrl_data *data = soc->control_data ?
650 &soc->control_data[n] : NULL;
651
652 pctl->groups[gid].gid = gid;
653 pctl->groups[gid].ctrl = ctrl;
654 pctl->groups[gid].data = data;
655 pctl->groups[gid].name = ctrl->name;
656 pctl->groups[gid].pins = ctrl->pins;
657 pctl->groups[gid].npins = ctrl->npins;
658
659
660
661
662
663
664 if (!ctrl->name) {
665 pctl->groups[gid].name = noname_buf;
666 pctl->groups[gid].npins = 1;
667 sprintf(noname_buf, "mpp%d", ctrl->pid+0);
668 noname_buf += 8;
669
670 for (k = 1; k < ctrl->npins; k++) {
671 gid++;
672 pctl->groups[gid].gid = gid;
673 pctl->groups[gid].ctrl = ctrl;
674 pctl->groups[gid].data = data;
675 pctl->groups[gid].name = noname_buf;
676 pctl->groups[gid].pins = &ctrl->pins[k];
677 pctl->groups[gid].npins = 1;
678 sprintf(noname_buf, "mpp%d", ctrl->pid+k);
679 noname_buf += 8;
680 }
681 }
682 gid++;
683 }
684
685
686 for (n = 0; n < soc->nmodes; n++) {
687 struct mvebu_mpp_mode *mode = &soc->modes[n];
688 struct mvebu_mpp_ctrl_setting *set = &mode->settings[0];
689 struct mvebu_pinctrl_group *grp;
690 unsigned num_settings;
691 unsigned supp_settings;
692
693 for (num_settings = 0, supp_settings = 0; ; set++) {
694 if (!set->name)
695 break;
696
697 num_settings++;
698
699
700 if (pctl->variant && !(pctl->variant & set->variant))
701 continue;
702
703 supp_settings++;
704
705
706 if (strcmp(set->name, "gpio") == 0)
707 set->flags = MVEBU_SETTING_GPI |
708 MVEBU_SETTING_GPO;
709 else if (strcmp(set->name, "gpo") == 0)
710 set->flags = MVEBU_SETTING_GPO;
711 else if (strcmp(set->name, "gpi") == 0)
712 set->flags = MVEBU_SETTING_GPI;
713 }
714
715
716 if (!supp_settings)
717 continue;
718
719 grp = mvebu_pinctrl_find_group_by_pid(pctl, mode->pid);
720 if (!grp) {
721 dev_warn(&pdev->dev, "unknown pinctrl group %d\n",
722 mode->pid);
723 continue;
724 }
725
726 grp->settings = mode->settings;
727 grp->num_settings = num_settings;
728 }
729
730 ret = mvebu_pinctrl_build_functions(pdev, pctl);
731 if (ret) {
732 dev_err(&pdev->dev, "unable to build functions\n");
733 return ret;
734 }
735
736 pctl->pctldev = devm_pinctrl_register(&pdev->dev, &pctl->desc, pctl);
737 if (IS_ERR(pctl->pctldev)) {
738 dev_err(&pdev->dev, "unable to register pinctrl driver\n");
739 return PTR_ERR(pctl->pctldev);
740 }
741
742 dev_info(&pdev->dev, "registered pinctrl driver\n");
743
744
745 for (n = 0; n < soc->ngpioranges; n++)
746 pinctrl_add_gpio_range(pctl->pctldev, &soc->gpioranges[n]);
747
748 return 0;
749}
750
751
752
753
754
755
756
757
758int mvebu_pinctrl_simple_mmio_probe(struct platform_device *pdev)
759{
760 struct mvebu_pinctrl_soc_info *soc = dev_get_platdata(&pdev->dev);
761 struct mvebu_mpp_ctrl_data *mpp_data;
762 void __iomem *base;
763 int i;
764
765 base = devm_platform_ioremap_resource(pdev, 0);
766 if (IS_ERR(base))
767 return PTR_ERR(base);
768
769 mpp_data = devm_kcalloc(&pdev->dev, soc->ncontrols, sizeof(*mpp_data),
770 GFP_KERNEL);
771 if (!mpp_data)
772 return -ENOMEM;
773
774 for (i = 0; i < soc->ncontrols; i++)
775 mpp_data[i].base = base;
776
777 soc->control_data = mpp_data;
778
779 return mvebu_pinctrl_probe(pdev);
780}
781
782int mvebu_regmap_mpp_ctrl_get(struct mvebu_mpp_ctrl_data *data,
783 unsigned int pid, unsigned long *config)
784{
785 unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
786 unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
787 unsigned int val;
788 int err;
789
790 err = regmap_read(data->regmap.map, data->regmap.offset + off, &val);
791 if (err)
792 return err;
793
794 *config = (val >> shift) & MVEBU_MPP_MASK;
795
796 return 0;
797}
798
799int mvebu_regmap_mpp_ctrl_set(struct mvebu_mpp_ctrl_data *data,
800 unsigned int pid, unsigned long config)
801{
802 unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
803 unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
804
805 return regmap_update_bits(data->regmap.map, data->regmap.offset + off,
806 MVEBU_MPP_MASK << shift, config << shift);
807}
808
809int mvebu_pinctrl_simple_regmap_probe(struct platform_device *pdev,
810 struct device *syscon_dev, u32 offset)
811{
812 struct mvebu_pinctrl_soc_info *soc = dev_get_platdata(&pdev->dev);
813 struct mvebu_mpp_ctrl_data *mpp_data;
814 struct regmap *regmap;
815 int i;
816
817 regmap = syscon_node_to_regmap(syscon_dev->of_node);
818 if (IS_ERR(regmap))
819 return PTR_ERR(regmap);
820
821 mpp_data = devm_kcalloc(&pdev->dev, soc->ncontrols, sizeof(*mpp_data),
822 GFP_KERNEL);
823 if (!mpp_data)
824 return -ENOMEM;
825
826 for (i = 0; i < soc->ncontrols; i++) {
827 mpp_data[i].regmap.map = regmap;
828 mpp_data[i].regmap.offset = offset;
829 }
830
831 soc->control_data = mpp_data;
832
833 return mvebu_pinctrl_probe(pdev);
834}
835
