blob: 349bf867e554a924be034b3f69ab588939f3147c [file] [log] [blame]
Marek Vasut3066a062017-09-15 21:13:55 +02001/*
2 * Pin Control driver for SuperH Pin Function Controller.
3 *
4 * Authors: Magnus Damm, Paul Mundt, Laurent Pinchart
5 *
6 * Copyright (C) 2008 Magnus Damm
7 * Copyright (C) 2009 - 2012 Paul Mundt
8 * Copyright (C) 2017 Marek Vasut
9 *
10 * SPDX-License-Identifier: GPL-2.0
11 */
12
13#define DRV_NAME "sh-pfc"
14
15#include <common.h>
16#include <dm.h>
17#include <errno.h>
18#include <dm/pinctrl.h>
19#include <linux/io.h>
20#include <linux/sizes.h>
21
22#include "sh_pfc.h"
23
24DECLARE_GLOBAL_DATA_PTR;
25
26enum sh_pfc_model {
Marek Vasutc40f2d62018-01-17 22:18:59 +010027 SH_PFC_R8A7790 = 0,
Marek Vasut06ef9e82018-01-17 17:14:45 +010028 SH_PFC_R8A7791,
Marek Vasut1ef39302018-01-17 22:29:50 +010029 SH_PFC_R8A7792,
Marek Vasut06ef9e82018-01-17 17:14:45 +010030 SH_PFC_R8A7793,
Marek Vasutc40f2d62018-01-17 22:18:59 +010031 SH_PFC_R8A7795,
Marek Vasut3066a062017-09-15 21:13:55 +020032 SH_PFC_R8A7796,
Marek Vasuta0e11e52017-10-09 20:57:29 +020033 SH_PFC_R8A77970,
Marek Vasut7d35e642017-10-08 20:57:37 +020034 SH_PFC_R8A77995,
Marek Vasut3066a062017-09-15 21:13:55 +020035};
36
37struct sh_pfc_pin_config {
38 u32 type;
39};
40
41struct sh_pfc_pinctrl {
42 struct sh_pfc *pfc;
43
44 struct sh_pfc_pin_config *configs;
45
46 const char *func_prop_name;
47 const char *groups_prop_name;
48 const char *pins_prop_name;
49};
50
51struct sh_pfc_pin_range {
52 u16 start;
53 u16 end;
54};
55
56struct sh_pfc_pinctrl_priv {
57 struct sh_pfc pfc;
58 struct sh_pfc_pinctrl pmx;
59};
60
61int sh_pfc_get_pin_index(struct sh_pfc *pfc, unsigned int pin)
62{
63 unsigned int offset;
64 unsigned int i;
65
66 for (i = 0, offset = 0; i < pfc->nr_ranges; ++i) {
67 const struct sh_pfc_pin_range *range = &pfc->ranges[i];
68
69 if (pin <= range->end)
70 return pin >= range->start
71 ? offset + pin - range->start : -1;
72
73 offset += range->end - range->start + 1;
74 }
75
76 return -EINVAL;
77}
78
79static int sh_pfc_enum_in_range(u16 enum_id, const struct pinmux_range *r)
80{
81 if (enum_id < r->begin)
82 return 0;
83
84 if (enum_id > r->end)
85 return 0;
86
87 return 1;
88}
89
90u32 sh_pfc_read_raw_reg(void __iomem *mapped_reg, unsigned int reg_width)
91{
92 switch (reg_width) {
93 case 8:
94 return readb(mapped_reg);
95 case 16:
96 return readw(mapped_reg);
97 case 32:
98 return readl(mapped_reg);
99 }
100
101 BUG();
102 return 0;
103}
104
105void sh_pfc_write_raw_reg(void __iomem *mapped_reg, unsigned int reg_width,
106 u32 data)
107{
108 switch (reg_width) {
109 case 8:
110 writeb(data, mapped_reg);
111 return;
112 case 16:
113 writew(data, mapped_reg);
114 return;
115 case 32:
116 writel(data, mapped_reg);
117 return;
118 }
119
120 BUG();
121}
122
123u32 sh_pfc_read_reg(struct sh_pfc *pfc, u32 reg, unsigned int width)
124{
125 return sh_pfc_read_raw_reg(pfc->regs + reg, width);
126}
127
128void sh_pfc_write_reg(struct sh_pfc *pfc, u32 reg, unsigned int width, u32 data)
129{
130 void __iomem *unlock_reg =
131 (void __iomem *)(uintptr_t)pfc->info->unlock_reg;
132
133 if (pfc->info->unlock_reg)
134 sh_pfc_write_raw_reg(unlock_reg, 32, ~data);
135
136 sh_pfc_write_raw_reg(pfc->regs + reg, width, data);
137}
138
139static void sh_pfc_config_reg_helper(struct sh_pfc *pfc,
140 const struct pinmux_cfg_reg *crp,
141 unsigned int in_pos,
142 void __iomem **mapped_regp, u32 *maskp,
143 unsigned int *posp)
144{
145 unsigned int k;
146
147 *mapped_regp = (void __iomem *)(uintptr_t)crp->reg;
148
149 if (crp->field_width) {
150 *maskp = (1 << crp->field_width) - 1;
151 *posp = crp->reg_width - ((in_pos + 1) * crp->field_width);
152 } else {
153 *maskp = (1 << crp->var_field_width[in_pos]) - 1;
154 *posp = crp->reg_width;
155 for (k = 0; k <= in_pos; k++)
156 *posp -= crp->var_field_width[k];
157 }
158}
159
160static void sh_pfc_write_config_reg(struct sh_pfc *pfc,
161 const struct pinmux_cfg_reg *crp,
162 unsigned int field, u32 value)
163{
164 void __iomem *mapped_reg;
165 void __iomem *unlock_reg =
166 (void __iomem *)(uintptr_t)pfc->info->unlock_reg;
167 unsigned int pos;
168 u32 mask, data;
169
170 sh_pfc_config_reg_helper(pfc, crp, field, &mapped_reg, &mask, &pos);
171
172 dev_dbg(pfc->dev, "write_reg addr = %x, value = 0x%x, field = %u, "
173 "r_width = %u, f_width = %u\n",
174 crp->reg, value, field, crp->reg_width, crp->field_width);
175
176 mask = ~(mask << pos);
177 value = value << pos;
178
179 data = sh_pfc_read_raw_reg(mapped_reg, crp->reg_width);
180 data &= mask;
181 data |= value;
182
183 if (pfc->info->unlock_reg)
184 sh_pfc_write_raw_reg(unlock_reg, 32, ~data);
185
186 sh_pfc_write_raw_reg(mapped_reg, crp->reg_width, data);
187}
188
189static int sh_pfc_get_config_reg(struct sh_pfc *pfc, u16 enum_id,
190 const struct pinmux_cfg_reg **crp,
191 unsigned int *fieldp, u32 *valuep)
192{
193 unsigned int k = 0;
194
195 while (1) {
196 const struct pinmux_cfg_reg *config_reg =
197 pfc->info->cfg_regs + k;
198 unsigned int r_width = config_reg->reg_width;
199 unsigned int f_width = config_reg->field_width;
200 unsigned int curr_width;
201 unsigned int bit_pos;
202 unsigned int pos = 0;
203 unsigned int m = 0;
204
205 if (!r_width)
206 break;
207
208 for (bit_pos = 0; bit_pos < r_width; bit_pos += curr_width) {
209 u32 ncomb;
210 u32 n;
211
212 if (f_width)
213 curr_width = f_width;
214 else
215 curr_width = config_reg->var_field_width[m];
216
217 ncomb = 1 << curr_width;
218 for (n = 0; n < ncomb; n++) {
219 if (config_reg->enum_ids[pos + n] == enum_id) {
220 *crp = config_reg;
221 *fieldp = m;
222 *valuep = n;
223 return 0;
224 }
225 }
226 pos += ncomb;
227 m++;
228 }
229 k++;
230 }
231
232 return -EINVAL;
233}
234
235static int sh_pfc_mark_to_enum(struct sh_pfc *pfc, u16 mark, int pos,
236 u16 *enum_idp)
237{
238 const u16 *data = pfc->info->pinmux_data;
239 unsigned int k;
240
241 if (pos) {
242 *enum_idp = data[pos + 1];
243 return pos + 1;
244 }
245
246 for (k = 0; k < pfc->info->pinmux_data_size; k++) {
247 if (data[k] == mark) {
248 *enum_idp = data[k + 1];
249 return k + 1;
250 }
251 }
252
253 dev_err(pfc->dev, "cannot locate data/mark enum_id for mark %d\n",
254 mark);
255 return -EINVAL;
256}
257
258int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
259{
260 const struct pinmux_range *range;
261 int pos = 0;
262
263 switch (pinmux_type) {
264 case PINMUX_TYPE_GPIO:
265 case PINMUX_TYPE_FUNCTION:
266 range = NULL;
267 break;
268
269 case PINMUX_TYPE_OUTPUT:
270 range = &pfc->info->output;
271 break;
272
273 case PINMUX_TYPE_INPUT:
274 range = &pfc->info->input;
275 break;
276
277 default:
278 return -EINVAL;
279 }
280
281 /* Iterate over all the configuration fields we need to update. */
282 while (1) {
283 const struct pinmux_cfg_reg *cr;
284 unsigned int field;
285 u16 enum_id;
286 u32 value;
287 int in_range;
288 int ret;
289
290 pos = sh_pfc_mark_to_enum(pfc, mark, pos, &enum_id);
291 if (pos < 0)
292 return pos;
293
294 if (!enum_id)
295 break;
296
297 /* Check if the configuration field selects a function. If it
298 * doesn't, skip the field if it's not applicable to the
299 * requested pinmux type.
300 */
301 in_range = sh_pfc_enum_in_range(enum_id, &pfc->info->function);
302 if (!in_range) {
303 if (pinmux_type == PINMUX_TYPE_FUNCTION) {
304 /* Functions are allowed to modify all
305 * fields.
306 */
307 in_range = 1;
308 } else if (pinmux_type != PINMUX_TYPE_GPIO) {
309 /* Input/output types can only modify fields
310 * that correspond to their respective ranges.
311 */
312 in_range = sh_pfc_enum_in_range(enum_id, range);
313
314 /*
315 * special case pass through for fixed
316 * input-only or output-only pins without
317 * function enum register association.
318 */
319 if (in_range && enum_id == range->force)
320 continue;
321 }
322 /* GPIOs are only allowed to modify function fields. */
323 }
324
325 if (!in_range)
326 continue;
327
328 ret = sh_pfc_get_config_reg(pfc, enum_id, &cr, &field, &value);
329 if (ret < 0)
330 return ret;
331
332 sh_pfc_write_config_reg(pfc, cr, field, value);
333 }
334
335 return 0;
336}
337
338const struct sh_pfc_bias_info *
339sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info,
340 unsigned int num, unsigned int pin)
341{
342 unsigned int i;
343
344 for (i = 0; i < num; i++)
345 if (info[i].pin == pin)
346 return &info[i];
347
348 printf("Pin %u is not in bias info list\n", pin);
349
350 return NULL;
351}
352
353static int sh_pfc_init_ranges(struct sh_pfc *pfc)
354{
355 struct sh_pfc_pin_range *range;
356 unsigned int nr_ranges;
357 unsigned int i;
358
359 if (pfc->info->pins[0].pin == (u16)-1) {
360 /* Pin number -1 denotes that the SoC doesn't report pin numbers
361 * in its pin arrays yet. Consider the pin numbers range as
362 * continuous and allocate a single range.
363 */
364 pfc->nr_ranges = 1;
365 pfc->ranges = kzalloc(sizeof(*pfc->ranges), GFP_KERNEL);
366 if (pfc->ranges == NULL)
367 return -ENOMEM;
368
369 pfc->ranges->start = 0;
370 pfc->ranges->end = pfc->info->nr_pins - 1;
371 pfc->nr_gpio_pins = pfc->info->nr_pins;
372
373 return 0;
374 }
375
376 /* Count, allocate and fill the ranges. The PFC SoC data pins array must
377 * be sorted by pin numbers, and pins without a GPIO port must come
378 * last.
379 */
380 for (i = 1, nr_ranges = 1; i < pfc->info->nr_pins; ++i) {
381 if (pfc->info->pins[i-1].pin != pfc->info->pins[i].pin - 1)
382 nr_ranges++;
383 }
384
385 pfc->nr_ranges = nr_ranges;
386 pfc->ranges = kzalloc(sizeof(*pfc->ranges) * nr_ranges, GFP_KERNEL);
387 if (pfc->ranges == NULL)
388 return -ENOMEM;
389
390 range = pfc->ranges;
391 range->start = pfc->info->pins[0].pin;
392
393 for (i = 1; i < pfc->info->nr_pins; ++i) {
394 if (pfc->info->pins[i-1].pin == pfc->info->pins[i].pin - 1)
395 continue;
396
397 range->end = pfc->info->pins[i-1].pin;
398 if (!(pfc->info->pins[i-1].configs & SH_PFC_PIN_CFG_NO_GPIO))
399 pfc->nr_gpio_pins = range->end + 1;
400
401 range++;
402 range->start = pfc->info->pins[i].pin;
403 }
404
405 range->end = pfc->info->pins[i-1].pin;
406 if (!(pfc->info->pins[i-1].configs & SH_PFC_PIN_CFG_NO_GPIO))
407 pfc->nr_gpio_pins = range->end + 1;
408
409 return 0;
410}
411
412static int sh_pfc_pinctrl_get_pins_count(struct udevice *dev)
413{
414 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
415
416 return priv->pfc.info->nr_pins;
417}
418
419static const char *sh_pfc_pinctrl_get_pin_name(struct udevice *dev,
420 unsigned selector)
421{
422 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
423
424 return priv->pfc.info->pins[selector].name;
425}
426
427static int sh_pfc_pinctrl_get_groups_count(struct udevice *dev)
428{
429 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
430
431 return priv->pfc.info->nr_groups;
432}
433
434static const char *sh_pfc_pinctrl_get_group_name(struct udevice *dev,
435 unsigned selector)
436{
437 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
438
439 return priv->pfc.info->groups[selector].name;
440}
441
442static int sh_pfc_pinctrl_get_functions_count(struct udevice *dev)
443{
444 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
445
446 return priv->pfc.info->nr_functions;
447}
448
449static const char *sh_pfc_pinctrl_get_function_name(struct udevice *dev,
450 unsigned selector)
451{
452 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
453
454 return priv->pfc.info->functions[selector].name;
455}
456
Marek Vasut489d79c2017-11-26 18:07:29 +0100457int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector)
458{
459 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
460 struct sh_pfc_pinctrl *pmx = &priv->pmx;
461 struct sh_pfc *pfc = &priv->pfc;
462 struct sh_pfc_pin_config *cfg;
463 const struct sh_pfc_pin *pin = NULL;
464 int i, idx;
465
466 for (i = 1; i < pfc->info->nr_pins; i++) {
467 if (priv->pfc.info->pins[i].pin != pin_selector)
468 continue;
469
470 pin = &priv->pfc.info->pins[i];
471 break;
472 }
473
474 if (!pin)
475 return -EINVAL;
476
477 idx = sh_pfc_get_pin_index(pfc, pin->pin);
478 cfg = &pmx->configs[idx];
479
480 if (cfg->type != PINMUX_TYPE_NONE)
481 return -EBUSY;
482
483 return sh_pfc_config_mux(pfc, pin->enum_id, PINMUX_TYPE_GPIO);
484}
485
Marek Vasut5e6db842017-11-26 17:42:16 +0100486static int sh_pfc_pinctrl_pin_set(struct udevice *dev, unsigned pin_selector,
487 unsigned func_selector)
488{
489 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
490 struct sh_pfc_pinctrl *pmx = &priv->pmx;
491 struct sh_pfc *pfc = &priv->pfc;
492 const struct sh_pfc_pin *pin = &priv->pfc.info->pins[pin_selector];
493 int idx = sh_pfc_get_pin_index(pfc, pin->pin);
494 struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
495
496 if (cfg->type != PINMUX_TYPE_NONE)
497 return -EBUSY;
498
499 return sh_pfc_config_mux(pfc, pin->enum_id, PINMUX_TYPE_FUNCTION);
500}
501
Marek Vasut3066a062017-09-15 21:13:55 +0200502static int sh_pfc_pinctrl_group_set(struct udevice *dev, unsigned group_selector,
503 unsigned func_selector)
504{
505 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
506 struct sh_pfc_pinctrl *pmx = &priv->pmx;
507 struct sh_pfc *pfc = &priv->pfc;
508 const struct sh_pfc_pin_group *grp = &priv->pfc.info->groups[group_selector];
509 unsigned int i;
510 int ret = 0;
511
512 for (i = 0; i < grp->nr_pins; ++i) {
513 int idx = sh_pfc_get_pin_index(pfc, grp->pins[i]);
514 struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
515
516 if (cfg->type != PINMUX_TYPE_NONE) {
517 ret = -EBUSY;
518 goto done;
519 }
520 }
521
522 for (i = 0; i < grp->nr_pins; ++i) {
523 ret = sh_pfc_config_mux(pfc, grp->mux[i], PINMUX_TYPE_FUNCTION);
524 if (ret < 0)
525 break;
526 }
527
528done:
529 return ret;
530}
Marek Vasutc9dd9ae2017-09-28 00:56:24 +0200531#if CONFIG_IS_ENABLED(PINCONF)
532static const struct pinconf_param sh_pfc_pinconf_params[] = {
533 { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
534 { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
535 { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
536 { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
537 { "power-source", PIN_CONFIG_POWER_SOURCE, 3300 },
538};
539
540static void __iomem *
541sh_pfc_pinconf_find_drive_strength_reg(struct sh_pfc *pfc, unsigned int pin,
542 unsigned int *offset, unsigned int *size)
543{
544 const struct pinmux_drive_reg_field *field;
545 const struct pinmux_drive_reg *reg;
546 unsigned int i;
547
548 for (reg = pfc->info->drive_regs; reg->reg; ++reg) {
549 for (i = 0; i < ARRAY_SIZE(reg->fields); ++i) {
550 field = &reg->fields[i];
551
552 if (field->size && field->pin == pin) {
553 *offset = field->offset;
554 *size = field->size;
555
556 return (void __iomem *)(uintptr_t)reg->reg;
557 }
558 }
559 }
560
561 return NULL;
562}
563
564static int sh_pfc_pinconf_set_drive_strength(struct sh_pfc *pfc,
565 unsigned int pin, u16 strength)
566{
567 unsigned int offset;
568 unsigned int size;
569 unsigned int step;
570 void __iomem *reg;
571 void __iomem *unlock_reg =
572 (void __iomem *)(uintptr_t)pfc->info->unlock_reg;
573 u32 val;
574
575 reg = sh_pfc_pinconf_find_drive_strength_reg(pfc, pin, &offset, &size);
576 if (!reg)
577 return -EINVAL;
578
579 step = size == 2 ? 6 : 3;
580
581 if (strength < step || strength > 24)
582 return -EINVAL;
583
584 /* Convert the value from mA based on a full drive strength value of
585 * 24mA. We can make the full value configurable later if needed.
586 */
587 strength = strength / step - 1;
588
589 val = sh_pfc_read_raw_reg(reg, 32);
590 val &= ~GENMASK(offset + size - 1, offset);
591 val |= strength << offset;
592
593 if (unlock_reg)
594 sh_pfc_write_raw_reg(unlock_reg, 32, ~val);
595
596 sh_pfc_write_raw_reg(reg, 32, val);
597
598 return 0;
599}
600
601/* Check whether the requested parameter is supported for a pin. */
602static bool sh_pfc_pinconf_validate(struct sh_pfc *pfc, unsigned int _pin,
603 unsigned int param)
604{
605 int idx = sh_pfc_get_pin_index(pfc, _pin);
606 const struct sh_pfc_pin *pin = &pfc->info->pins[idx];
607
608 switch (param) {
609 case PIN_CONFIG_BIAS_DISABLE:
610 return pin->configs &
611 (SH_PFC_PIN_CFG_PULL_UP | SH_PFC_PIN_CFG_PULL_DOWN);
612
613 case PIN_CONFIG_BIAS_PULL_UP:
614 return pin->configs & SH_PFC_PIN_CFG_PULL_UP;
615
616 case PIN_CONFIG_BIAS_PULL_DOWN:
617 return pin->configs & SH_PFC_PIN_CFG_PULL_DOWN;
618
619 case PIN_CONFIG_DRIVE_STRENGTH:
620 return pin->configs & SH_PFC_PIN_CFG_DRIVE_STRENGTH;
621
622 case PIN_CONFIG_POWER_SOURCE:
623 return pin->configs & SH_PFC_PIN_CFG_IO_VOLTAGE;
624
625 default:
626 return false;
627 }
628}
629
630static int sh_pfc_pinconf_set(struct sh_pfc_pinctrl *pmx, unsigned _pin,
631 unsigned int param, unsigned int arg)
632{
633 struct sh_pfc *pfc = pmx->pfc;
634 void __iomem *pocctrl;
635 void __iomem *unlock_reg =
636 (void __iomem *)(uintptr_t)pfc->info->unlock_reg;
637 u32 addr, val;
638 int bit, ret;
639
640 if (!sh_pfc_pinconf_validate(pfc, _pin, param))
641 return -ENOTSUPP;
642
643 switch (param) {
644 case PIN_CONFIG_BIAS_PULL_UP:
645 case PIN_CONFIG_BIAS_PULL_DOWN:
646 case PIN_CONFIG_BIAS_DISABLE:
647 if (!pfc->info->ops || !pfc->info->ops->set_bias)
648 return -ENOTSUPP;
649
650 pfc->info->ops->set_bias(pfc, _pin, param);
651
652 break;
653
654 case PIN_CONFIG_DRIVE_STRENGTH:
655 ret = sh_pfc_pinconf_set_drive_strength(pfc, _pin, arg);
656 if (ret < 0)
657 return ret;
658
659 break;
660
661 case PIN_CONFIG_POWER_SOURCE:
662 if (!pfc->info->ops || !pfc->info->ops->pin_to_pocctrl)
663 return -ENOTSUPP;
664
665 bit = pfc->info->ops->pin_to_pocctrl(pfc, _pin, &addr);
666 if (bit < 0) {
667 printf("invalid pin %#x", _pin);
668 return bit;
669 }
670
671 if (arg != 1800 && arg != 3300)
672 return -EINVAL;
673
674 pocctrl = (void __iomem *)(uintptr_t)addr;
675
676 val = sh_pfc_read_raw_reg(pocctrl, 32);
677 if (arg == 3300)
678 val |= BIT(bit);
679 else
680 val &= ~BIT(bit);
681
682 if (unlock_reg)
683 sh_pfc_write_raw_reg(unlock_reg, 32, ~val);
684
685 sh_pfc_write_raw_reg(pocctrl, 32, val);
686
687 break;
688
689 default:
690 return -ENOTSUPP;
691 }
692
693 return 0;
694}
695
Marek Vasut5e6db842017-11-26 17:42:16 +0100696static int sh_pfc_pinconf_pin_set(struct udevice *dev,
697 unsigned int pin_selector,
698 unsigned int param, unsigned int arg)
699{
700 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
701 struct sh_pfc_pinctrl *pmx = &priv->pmx;
702 struct sh_pfc *pfc = &priv->pfc;
703 const struct sh_pfc_pin *pin = &pfc->info->pins[pin_selector];
704
705 sh_pfc_pinconf_set(pmx, pin->pin, param, arg);
706
707 return 0;
708}
Marek Vasutc9dd9ae2017-09-28 00:56:24 +0200709
710static int sh_pfc_pinconf_group_set(struct udevice *dev,
711 unsigned int group_selector,
712 unsigned int param, unsigned int arg)
713{
714 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
715 struct sh_pfc_pinctrl *pmx = &priv->pmx;
716 struct sh_pfc *pfc = &priv->pfc;
717 const struct sh_pfc_pin_group *grp = &pfc->info->groups[group_selector];
718 unsigned int i;
719
720 for (i = 0; i < grp->nr_pins; i++)
721 sh_pfc_pinconf_set(pmx, grp->pins[i], param, arg);
722
723 return 0;
724}
725#endif
Marek Vasut3066a062017-09-15 21:13:55 +0200726
727static struct pinctrl_ops sh_pfc_pinctrl_ops = {
728 .get_pins_count = sh_pfc_pinctrl_get_pins_count,
729 .get_pin_name = sh_pfc_pinctrl_get_pin_name,
730 .get_groups_count = sh_pfc_pinctrl_get_groups_count,
731 .get_group_name = sh_pfc_pinctrl_get_group_name,
732 .get_functions_count = sh_pfc_pinctrl_get_functions_count,
733 .get_function_name = sh_pfc_pinctrl_get_function_name,
734
Marek Vasutc9dd9ae2017-09-28 00:56:24 +0200735#if CONFIG_IS_ENABLED(PINCONF)
736 .pinconf_num_params = ARRAY_SIZE(sh_pfc_pinconf_params),
737 .pinconf_params = sh_pfc_pinconf_params,
Marek Vasut5e6db842017-11-26 17:42:16 +0100738 .pinconf_set = sh_pfc_pinconf_pin_set,
Marek Vasutc9dd9ae2017-09-28 00:56:24 +0200739 .pinconf_group_set = sh_pfc_pinconf_group_set,
740#endif
Marek Vasut5e6db842017-11-26 17:42:16 +0100741 .pinmux_set = sh_pfc_pinctrl_pin_set,
Marek Vasut3066a062017-09-15 21:13:55 +0200742 .pinmux_group_set = sh_pfc_pinctrl_group_set,
743 .set_state = pinctrl_generic_set_state,
744};
745
746static int sh_pfc_map_pins(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx)
747{
748 unsigned int i;
749
750 /* Allocate and initialize the pins and configs arrays. */
751 pmx->configs = kzalloc(sizeof(*pmx->configs) * pfc->info->nr_pins,
752 GFP_KERNEL);
753 if (unlikely(!pmx->configs))
754 return -ENOMEM;
755
756 for (i = 0; i < pfc->info->nr_pins; ++i) {
757 struct sh_pfc_pin_config *cfg = &pmx->configs[i];
758 cfg->type = PINMUX_TYPE_NONE;
759 }
760
761 return 0;
762}
763
764
765static int sh_pfc_pinctrl_probe(struct udevice *dev)
766{
767 struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
768 enum sh_pfc_model model = dev_get_driver_data(dev);
769 fdt_addr_t base;
770
771 base = devfdt_get_addr(dev);
772 if (base == FDT_ADDR_T_NONE)
773 return -EINVAL;
774
775 priv->pfc.regs = devm_ioremap(dev, base, SZ_2K);
776 if (!priv->pfc.regs)
777 return -ENOMEM;
778
Marek Vasutc40f2d62018-01-17 22:18:59 +0100779#ifdef CONFIG_PINCTRL_PFC_R8A7790
780 if (model == SH_PFC_R8A7790)
781 priv->pfc.info = &r8a7790_pinmux_info;
782#endif
Marek Vasut06ef9e82018-01-17 17:14:45 +0100783#ifdef CONFIG_PINCTRL_PFC_R8A7791
784 if (model == SH_PFC_R8A7791)
785 priv->pfc.info = &r8a7791_pinmux_info;
786#endif
Marek Vasut1ef39302018-01-17 22:29:50 +0100787#ifdef CONFIG_PINCTRL_PFC_R8A7792
788 if (model == SH_PFC_R8A7792)
789 priv->pfc.info = &r8a7792_pinmux_info;
790#endif
Marek Vasut06ef9e82018-01-17 17:14:45 +0100791#ifdef CONFIG_PINCTRL_PFC_R8A7793
792 if (model == SH_PFC_R8A7793)
793 priv->pfc.info = &r8a7793_pinmux_info;
794#endif
Marek Vasut3066a062017-09-15 21:13:55 +0200795#ifdef CONFIG_PINCTRL_PFC_R8A7795
796 if (model == SH_PFC_R8A7795)
797 priv->pfc.info = &r8a7795_pinmux_info;
798#endif
799#ifdef CONFIG_PINCTRL_PFC_R8A7796
800 if (model == SH_PFC_R8A7796)
801 priv->pfc.info = &r8a7796_pinmux_info;
802#endif
Marek Vasuta0e11e52017-10-09 20:57:29 +0200803#ifdef CONFIG_PINCTRL_PFC_R8A77970
804 if (model == SH_PFC_R8A77970)
805 priv->pfc.info = &r8a77970_pinmux_info;
806#endif
Marek Vasut7d35e642017-10-08 20:57:37 +0200807#ifdef CONFIG_PINCTRL_PFC_R8A77995
808 if (model == SH_PFC_R8A77995)
809 priv->pfc.info = &r8a77995_pinmux_info;
810#endif
Marek Vasut3066a062017-09-15 21:13:55 +0200811
812 priv->pmx.pfc = &priv->pfc;
813 sh_pfc_init_ranges(&priv->pfc);
814 sh_pfc_map_pins(&priv->pfc, &priv->pmx);
815
816 return 0;
817}
818
819static const struct udevice_id sh_pfc_pinctrl_ids[] = {
Marek Vasutc40f2d62018-01-17 22:18:59 +0100820#ifdef CONFIG_PINCTRL_PFC_R8A7790
821 {
822 .compatible = "renesas,pfc-r8a7790",
823 .data = SH_PFC_R8A7790,
824 },
825#endif
Marek Vasut06ef9e82018-01-17 17:14:45 +0100826#ifdef CONFIG_PINCTRL_PFC_R8A7791
827 {
828 .compatible = "renesas,pfc-r8a7791",
829 .data = SH_PFC_R8A7791,
830 },
831#endif
Marek Vasut1ef39302018-01-17 22:29:50 +0100832#ifdef CONFIG_PINCTRL_PFC_R8A7792
833 {
834 .compatible = "renesas,pfc-r8a7792",
835 .data = SH_PFC_R8A7792,
836 },
837#endif
Marek Vasut06ef9e82018-01-17 17:14:45 +0100838#ifdef CONFIG_PINCTRL_PFC_R8A7793
839 {
840 .compatible = "renesas,pfc-r8a7793",
841 .data = SH_PFC_R8A7793,
842 },
843#endif
Marek Vasut3066a062017-09-15 21:13:55 +0200844#ifdef CONFIG_PINCTRL_PFC_R8A7795
845 {
846 .compatible = "renesas,pfc-r8a7795",
847 .data = SH_PFC_R8A7795,
848 },
849#endif
850#ifdef CONFIG_PINCTRL_PFC_R8A7796
851 {
852 .compatible = "renesas,pfc-r8a7796",
853 .data = SH_PFC_R8A7796,
854 },
855#endif
Marek Vasuta0e11e52017-10-09 20:57:29 +0200856#ifdef CONFIG_PINCTRL_PFC_R8A77970
857 {
858 .compatible = "renesas,pfc-r8a77970",
859 .data = SH_PFC_R8A77970,
860 },
861#endif
Marek Vasut7d35e642017-10-08 20:57:37 +0200862#ifdef CONFIG_PINCTRL_PFC_R8A77995
863 {
864 .compatible = "renesas,pfc-r8a77995",
865 .data = SH_PFC_R8A77995,
866 },
867#endif
Marek Vasut3066a062017-09-15 21:13:55 +0200868 { },
869};
870
871U_BOOT_DRIVER(pinctrl_sh_pfc) = {
872 .name = "sh_pfc_pinctrl",
873 .id = UCLASS_PINCTRL,
874 .of_match = sh_pfc_pinctrl_ids,
875 .priv_auto_alloc_size = sizeof(struct sh_pfc_pinctrl_priv),
876 .ops = &sh_pfc_pinctrl_ops,
877 .probe = sh_pfc_pinctrl_probe,
878};