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8#include <linux/err.h>
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/regmap.h>
12#include <linux/slab.h>
13#include <linux/pinctrl/machine.h>
14#include <linux/pinctrl/pinctrl.h>
15#include <linux/pinctrl/pinmux.h>
16#include <linux/pinctrl/pinconf.h>
17#include <linux/pinctrl/pinconf-generic.h>
18
19#include <linux/mfd/madera/core.h>
20#include <linux/mfd/madera/registers.h>
21
22#include "../pinctrl-utils.h"
23
24#include "pinctrl-madera.h"
25
26
27
28
29
30static const struct pinctrl_pin_desc madera_pins[] = {
31 PINCTRL_PIN(0, "gpio1"),
32 PINCTRL_PIN(1, "gpio2"),
33 PINCTRL_PIN(2, "gpio3"),
34 PINCTRL_PIN(3, "gpio4"),
35 PINCTRL_PIN(4, "gpio5"),
36 PINCTRL_PIN(5, "gpio6"),
37 PINCTRL_PIN(6, "gpio7"),
38 PINCTRL_PIN(7, "gpio8"),
39 PINCTRL_PIN(8, "gpio9"),
40 PINCTRL_PIN(9, "gpio10"),
41 PINCTRL_PIN(10, "gpio11"),
42 PINCTRL_PIN(11, "gpio12"),
43 PINCTRL_PIN(12, "gpio13"),
44 PINCTRL_PIN(13, "gpio14"),
45 PINCTRL_PIN(14, "gpio15"),
46 PINCTRL_PIN(15, "gpio16"),
47 PINCTRL_PIN(16, "gpio17"),
48 PINCTRL_PIN(17, "gpio18"),
49 PINCTRL_PIN(18, "gpio19"),
50 PINCTRL_PIN(19, "gpio20"),
51 PINCTRL_PIN(20, "gpio21"),
52 PINCTRL_PIN(21, "gpio22"),
53 PINCTRL_PIN(22, "gpio23"),
54 PINCTRL_PIN(23, "gpio24"),
55 PINCTRL_PIN(24, "gpio25"),
56 PINCTRL_PIN(25, "gpio26"),
57 PINCTRL_PIN(26, "gpio27"),
58 PINCTRL_PIN(27, "gpio28"),
59 PINCTRL_PIN(28, "gpio29"),
60 PINCTRL_PIN(29, "gpio30"),
61 PINCTRL_PIN(30, "gpio31"),
62 PINCTRL_PIN(31, "gpio32"),
63 PINCTRL_PIN(32, "gpio33"),
64 PINCTRL_PIN(33, "gpio34"),
65 PINCTRL_PIN(34, "gpio35"),
66 PINCTRL_PIN(35, "gpio36"),
67 PINCTRL_PIN(36, "gpio37"),
68 PINCTRL_PIN(37, "gpio38"),
69 PINCTRL_PIN(38, "gpio39"),
70 PINCTRL_PIN(39, "gpio40"),
71};
72
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79
80
81
82static const char * const madera_pin_single_group_names[] = {
83 "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7",
84 "gpio8", "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14",
85 "gpio15", "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21",
86 "gpio22", "gpio23", "gpio24", "gpio25", "gpio26", "gpio27", "gpio28",
87 "gpio29", "gpio30", "gpio31", "gpio32", "gpio33", "gpio34", "gpio35",
88 "gpio36", "gpio37", "gpio38", "gpio39", "gpio40",
89};
90
91
92static const unsigned int madera_pin_single_group_pins[] = {
93 0, 1, 2, 3, 4, 5, 6,
94 7, 8, 9, 10, 11, 12, 13,
95 14, 15, 16, 17, 18, 19, 20,
96 21, 22, 23, 24, 25, 26, 27,
97 28, 29, 30, 31, 32, 33, 34,
98 35, 36, 37, 38, 39,
99};
100
101static const char * const madera_aif1_group_names[] = { "aif1" };
102static const char * const madera_aif2_group_names[] = { "aif2" };
103static const char * const madera_aif3_group_names[] = { "aif3" };
104static const char * const madera_aif4_group_names[] = { "aif4" };
105static const char * const madera_mif1_group_names[] = { "mif1" };
106static const char * const madera_mif2_group_names[] = { "mif2" };
107static const char * const madera_mif3_group_names[] = { "mif3" };
108static const char * const madera_dmic3_group_names[] = { "dmic3" };
109static const char * const madera_dmic4_group_names[] = { "dmic4" };
110static const char * const madera_dmic5_group_names[] = { "dmic5" };
111static const char * const madera_dmic6_group_names[] = { "dmic6" };
112static const char * const madera_spk1_group_names[] = { "pdmspk1" };
113static const char * const madera_spk2_group_names[] = { "pdmspk2" };
114
115
116
117
118
119static const struct {
120 const char *name;
121 const char * const *group_names;
122 u32 func;
123} madera_mux_funcs[] = {
124 {
125 .name = "aif1",
126 .group_names = madera_aif1_group_names,
127 .func = 0x000
128 },
129 {
130 .name = "aif2",
131 .group_names = madera_aif2_group_names,
132 .func = 0x000
133 },
134 {
135 .name = "aif3",
136 .group_names = madera_aif3_group_names,
137 .func = 0x000
138 },
139 {
140 .name = "aif4",
141 .group_names = madera_aif4_group_names,
142 .func = 0x000
143 },
144 {
145 .name = "mif1",
146 .group_names = madera_mif1_group_names,
147 .func = 0x000
148 },
149 {
150 .name = "mif2",
151 .group_names = madera_mif2_group_names,
152 .func = 0x000
153 },
154 {
155 .name = "mif3",
156 .group_names = madera_mif3_group_names,
157 .func = 0x000
158 },
159 {
160 .name = "dmic3",
161 .group_names = madera_dmic3_group_names,
162 .func = 0x000
163 },
164 {
165 .name = "dmic4",
166 .group_names = madera_dmic4_group_names,
167 .func = 0x000
168 },
169 {
170 .name = "dmic5",
171 .group_names = madera_dmic5_group_names,
172 .func = 0x000
173 },
174 {
175 .name = "dmic6",
176 .group_names = madera_dmic6_group_names,
177 .func = 0x000
178 },
179 {
180 .name = "pdmspk1",
181 .group_names = madera_spk1_group_names,
182 .func = 0x000
183 },
184 {
185 .name = "pdmspk2",
186 .group_names = madera_spk2_group_names,
187 .func = 0x000
188 },
189 {
190 .name = "io",
191 .group_names = madera_pin_single_group_names,
192 .func = 0x001
193 },
194 {
195 .name = "dsp-gpio",
196 .group_names = madera_pin_single_group_names,
197 .func = 0x002
198 },
199 {
200 .name = "irq1",
201 .group_names = madera_pin_single_group_names,
202 .func = 0x003
203 },
204 {
205 .name = "irq2",
206 .group_names = madera_pin_single_group_names,
207 .func = 0x004
208 },
209 {
210 .name = "fll1-clk",
211 .group_names = madera_pin_single_group_names,
212 .func = 0x010
213 },
214 {
215 .name = "fll2-clk",
216 .group_names = madera_pin_single_group_names,
217 .func = 0x011
218 },
219 {
220 .name = "fll3-clk",
221 .group_names = madera_pin_single_group_names,
222 .func = 0x012
223 },
224 {
225 .name = "fllao-clk",
226 .group_names = madera_pin_single_group_names,
227 .func = 0x013
228 },
229 {
230 .name = "fll1-lock",
231 .group_names = madera_pin_single_group_names,
232 .func = 0x018
233 },
234 {
235 .name = "fll2-lock",
236 .group_names = madera_pin_single_group_names,
237 .func = 0x019
238 },
239 {
240 .name = "fll3-lock",
241 .group_names = madera_pin_single_group_names,
242 .func = 0x01a
243 },
244 {
245 .name = "fllao-lock",
246 .group_names = madera_pin_single_group_names,
247 .func = 0x01b
248 },
249 {
250 .name = "opclk",
251 .group_names = madera_pin_single_group_names,
252 .func = 0x040
253 },
254 {
255 .name = "opclk-async",
256 .group_names = madera_pin_single_group_names,
257 .func = 0x041
258 },
259 {
260 .name = "pwm1",
261 .group_names = madera_pin_single_group_names,
262 .func = 0x048
263 },
264 {
265 .name = "pwm2",
266 .group_names = madera_pin_single_group_names,
267 .func = 0x049
268 },
269 {
270 .name = "spdif",
271 .group_names = madera_pin_single_group_names,
272 .func = 0x04c
273 },
274 {
275 .name = "asrc1-in1-lock",
276 .group_names = madera_pin_single_group_names,
277 .func = 0x088
278 },
279 {
280 .name = "asrc1-in2-lock",
281 .group_names = madera_pin_single_group_names,
282 .func = 0x089
283 },
284 {
285 .name = "asrc2-in1-lock",
286 .group_names = madera_pin_single_group_names,
287 .func = 0x08a
288 },
289 {
290 .name = "asrc2-in2-lock",
291 .group_names = madera_pin_single_group_names,
292 .func = 0x08b
293 },
294 {
295 .name = "spkl-short-circuit",
296 .group_names = madera_pin_single_group_names,
297 .func = 0x0b6
298 },
299 {
300 .name = "spkr-short-circuit",
301 .group_names = madera_pin_single_group_names,
302 .func = 0x0b7
303 },
304 {
305 .name = "spk-shutdown",
306 .group_names = madera_pin_single_group_names,
307 .func = 0x0e0
308 },
309 {
310 .name = "spk-overheat-shutdown",
311 .group_names = madera_pin_single_group_names,
312 .func = 0x0e1
313 },
314 {
315 .name = "spk-overheat-warn",
316 .group_names = madera_pin_single_group_names,
317 .func = 0x0e2
318 },
319 {
320 .name = "timer1-sts",
321 .group_names = madera_pin_single_group_names,
322 .func = 0x140
323 },
324 {
325 .name = "timer2-sts",
326 .group_names = madera_pin_single_group_names,
327 .func = 0x141
328 },
329 {
330 .name = "timer3-sts",
331 .group_names = madera_pin_single_group_names,
332 .func = 0x142
333 },
334 {
335 .name = "timer4-sts",
336 .group_names = madera_pin_single_group_names,
337 .func = 0x143
338 },
339 {
340 .name = "timer5-sts",
341 .group_names = madera_pin_single_group_names,
342 .func = 0x144
343 },
344 {
345 .name = "timer6-sts",
346 .group_names = madera_pin_single_group_names,
347 .func = 0x145
348 },
349 {
350 .name = "timer7-sts",
351 .group_names = madera_pin_single_group_names,
352 .func = 0x146
353 },
354 {
355 .name = "timer8-sts",
356 .group_names = madera_pin_single_group_names,
357 .func = 0x147
358 },
359 {
360 .name = "log1-fifo-ne",
361 .group_names = madera_pin_single_group_names,
362 .func = 0x150
363 },
364 {
365 .name = "log2-fifo-ne",
366 .group_names = madera_pin_single_group_names,
367 .func = 0x151
368 },
369 {
370 .name = "log3-fifo-ne",
371 .group_names = madera_pin_single_group_names,
372 .func = 0x152
373 },
374 {
375 .name = "log4-fifo-ne",
376 .group_names = madera_pin_single_group_names,
377 .func = 0x153
378 },
379 {
380 .name = "log5-fifo-ne",
381 .group_names = madera_pin_single_group_names,
382 .func = 0x154
383 },
384 {
385 .name = "log6-fifo-ne",
386 .group_names = madera_pin_single_group_names,
387 .func = 0x155
388 },
389 {
390 .name = "log7-fifo-ne",
391 .group_names = madera_pin_single_group_names,
392 .func = 0x156
393 },
394 {
395 .name = "log8-fifo-ne",
396 .group_names = madera_pin_single_group_names,
397 .func = 0x157
398 },
399 {
400 .name = "aux-pdm-clk",
401 .group_names = madera_pin_single_group_names,
402 .func = 0x280
403 },
404 {
405 .name = "aux-pdm-dat",
406 .group_names = madera_pin_single_group_names,
407 .func = 0x281
408 },
409};
410
411static u16 madera_pin_make_drv_str(struct madera_pin_private *priv,
412 unsigned int milliamps)
413{
414 switch (milliamps) {
415 case 4:
416 return 0;
417 case 8:
418 return 2 << MADERA_GP1_DRV_STR_SHIFT;
419 default:
420 break;
421 }
422
423 dev_warn(priv->dev, "%u mA not a valid drive strength", milliamps);
424
425 return 0;
426}
427
428static unsigned int madera_pin_unmake_drv_str(struct madera_pin_private *priv,
429 u16 regval)
430{
431 regval = (regval & MADERA_GP1_DRV_STR_MASK) >> MADERA_GP1_DRV_STR_SHIFT;
432
433 switch (regval) {
434 case 0:
435 return 4;
436 case 2:
437 return 8;
438 default:
439 return 0;
440 }
441}
442
443static int madera_get_groups_count(struct pinctrl_dev *pctldev)
444{
445 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
446
447
448 return priv->chip->n_pin_groups + priv->chip->n_pins;
449}
450
451static const char *madera_get_group_name(struct pinctrl_dev *pctldev,
452 unsigned int selector)
453{
454 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
455
456 if (selector < priv->chip->n_pin_groups)
457 return priv->chip->pin_groups[selector].name;
458
459 selector -= priv->chip->n_pin_groups;
460 return madera_pin_single_group_names[selector];
461}
462
463static int madera_get_group_pins(struct pinctrl_dev *pctldev,
464 unsigned int selector,
465 const unsigned int **pins,
466 unsigned int *num_pins)
467{
468 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
469
470 if (selector < priv->chip->n_pin_groups) {
471 *pins = priv->chip->pin_groups[selector].pins;
472 *num_pins = priv->chip->pin_groups[selector].n_pins;
473 } else {
474
475 selector -= priv->chip->n_pin_groups;
476 *pins = &madera_pin_single_group_pins[selector];
477 *num_pins = 1;
478 }
479 return 0;
480}
481
482static void madera_pin_dbg_show_fn(struct madera_pin_private *priv,
483 struct seq_file *s,
484 unsigned int pin, unsigned int fn)
485{
486 const struct madera_pin_chip *chip = priv->chip;
487 int i, g_pin;
488
489 if (fn != 0) {
490 for (i = 0; i < ARRAY_SIZE(madera_mux_funcs); ++i) {
491 if (madera_mux_funcs[i].func == fn) {
492 seq_printf(s, " FN=%s",
493 madera_mux_funcs[i].name);
494 return;
495 }
496 }
497 return;
498 }
499
500
501 for (i = 0; i < chip->n_pin_groups; ++i) {
502 for (g_pin = 0; g_pin < chip->pin_groups[i].n_pins; ++g_pin) {
503 if (chip->pin_groups[i].pins[g_pin] == pin) {
504 seq_printf(s, " FN=%s",
505 chip->pin_groups[i].name);
506 return;
507 }
508 }
509 }
510}
511
512static void __maybe_unused madera_pin_dbg_show(struct pinctrl_dev *pctldev,
513 struct seq_file *s,
514 unsigned int pin)
515{
516 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
517 unsigned int conf[2];
518 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin);
519 unsigned int fn;
520 int ret;
521
522 ret = regmap_read(priv->madera->regmap, reg, &conf[0]);
523 if (ret)
524 return;
525
526 ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);
527 if (ret)
528 return;
529
530 seq_printf(s, "%04x:%04x", conf[0], conf[1]);
531
532 fn = (conf[0] & MADERA_GP1_FN_MASK) >> MADERA_GP1_FN_SHIFT;
533 madera_pin_dbg_show_fn(priv, s, pin, fn);
534
535
536 if (fn == 1) {
537 if (conf[1] & MADERA_GP1_DIR_MASK)
538 seq_puts(s, " IN");
539 else
540 seq_puts(s, " OUT");
541 }
542
543 if (conf[1] & MADERA_GP1_PU_MASK)
544 seq_puts(s, " PU");
545
546 if (conf[1] & MADERA_GP1_PD_MASK)
547 seq_puts(s, " PD");
548
549 if (conf[0] & MADERA_GP1_DB_MASK)
550 seq_puts(s, " DB");
551
552 if (conf[0] & MADERA_GP1_OP_CFG_MASK)
553 seq_puts(s, " OD");
554 else
555 seq_puts(s, " CMOS");
556
557 seq_printf(s, " DRV=%umA", madera_pin_unmake_drv_str(priv, conf[1]));
558
559 if (conf[0] & MADERA_GP1_IP_CFG_MASK)
560 seq_puts(s, " SCHMITT");
561}
562
563static const struct pinctrl_ops madera_pin_group_ops = {
564 .get_groups_count = madera_get_groups_count,
565 .get_group_name = madera_get_group_name,
566 .get_group_pins = madera_get_group_pins,
567#if IS_ENABLED(CONFIG_OF)
568 .dt_node_to_map = pinconf_generic_dt_node_to_map_all,
569 .dt_free_map = pinctrl_utils_free_map,
570#endif
571#if IS_ENABLED(CONFIG_DEBUG_FS)
572 .pin_dbg_show = madera_pin_dbg_show,
573#endif
574};
575
576static int madera_mux_get_funcs_count(struct pinctrl_dev *pctldev)
577{
578 return ARRAY_SIZE(madera_mux_funcs);
579}
580
581static const char *madera_mux_get_func_name(struct pinctrl_dev *pctldev,
582 unsigned int selector)
583{
584 return madera_mux_funcs[selector].name;
585}
586
587static int madera_mux_get_groups(struct pinctrl_dev *pctldev,
588 unsigned int selector,
589 const char * const **groups,
590 unsigned int * const num_groups)
591{
592 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
593
594 *groups = madera_mux_funcs[selector].group_names;
595
596 if (madera_mux_funcs[selector].func == 0) {
597
598 *num_groups = 1;
599 } else {
600
601 *num_groups = priv->chip->n_pins;
602 }
603
604 return 0;
605}
606
607static int madera_mux_set_mux(struct pinctrl_dev *pctldev,
608 unsigned int selector,
609 unsigned int group)
610{
611 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
612 struct madera *madera = priv->madera;
613 const struct madera_pin_groups *pin_group = priv->chip->pin_groups;
614 unsigned int n_chip_groups = priv->chip->n_pin_groups;
615 const char *func_name = madera_mux_funcs[selector].name;
616 unsigned int reg;
617 int i, ret = 0;
618
619 dev_dbg(priv->dev, "%s selecting %u (%s) for group %u (%s)\n",
620 __func__, selector, func_name, group,
621 madera_get_group_name(pctldev, group));
622
623 if (madera_mux_funcs[selector].func == 0) {
624
625 for (i = 0; i < n_chip_groups; ++i) {
626 if (strcmp(func_name, pin_group->name) == 0)
627 break;
628
629 ++pin_group;
630 }
631
632 if (i == n_chip_groups)
633 return -EINVAL;
634
635 for (i = 0; i < pin_group->n_pins; ++i) {
636 reg = MADERA_GPIO1_CTRL_1 + (2 * pin_group->pins[i]);
637
638 dev_dbg(priv->dev, "%s setting 0x%x func bits to 0\n",
639 __func__, reg);
640
641 ret = regmap_update_bits(madera->regmap, reg,
642 MADERA_GP1_FN_MASK, 0);
643 if (ret)
644 break;
645
646 }
647 } else {
648
649
650
651
652
653 group -= n_chip_groups;
654 reg = MADERA_GPIO1_CTRL_1 + (2 * group);
655
656 dev_dbg(priv->dev, "%s setting 0x%x func bits to 0x%x\n",
657 __func__, reg, madera_mux_funcs[selector].func);
658
659 ret = regmap_update_bits(madera->regmap,
660 reg,
661 MADERA_GP1_FN_MASK,
662 madera_mux_funcs[selector].func);
663 }
664
665 if (ret)
666 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
667
668 return ret;
669}
670
671static int madera_gpio_set_direction(struct pinctrl_dev *pctldev,
672 struct pinctrl_gpio_range *range,
673 unsigned int offset,
674 bool input)
675{
676 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
677 struct madera *madera = priv->madera;
678 unsigned int reg = MADERA_GPIO1_CTRL_2 + (2 * offset);
679 unsigned int val;
680 int ret;
681
682 if (input)
683 val = MADERA_GP1_DIR;
684 else
685 val = 0;
686
687 ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_DIR_MASK, val);
688 if (ret)
689 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
690
691 return ret;
692}
693
694static int madera_gpio_request_enable(struct pinctrl_dev *pctldev,
695 struct pinctrl_gpio_range *range,
696 unsigned int offset)
697{
698 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
699 struct madera *madera = priv->madera;
700 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * offset);
701 int ret;
702
703
704 ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);
705 if (ret)
706 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
707
708 return ret;
709}
710
711static void madera_gpio_disable_free(struct pinctrl_dev *pctldev,
712 struct pinctrl_gpio_range *range,
713 unsigned int offset)
714{
715 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
716 struct madera *madera = priv->madera;
717 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * offset);
718 int ret;
719
720
721 madera_gpio_set_direction(pctldev, range, offset, true);
722
723 ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);
724 if (ret)
725 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
726}
727
728static const struct pinmux_ops madera_pin_mux_ops = {
729 .get_functions_count = madera_mux_get_funcs_count,
730 .get_function_name = madera_mux_get_func_name,
731 .get_function_groups = madera_mux_get_groups,
732 .set_mux = madera_mux_set_mux,
733 .gpio_request_enable = madera_gpio_request_enable,
734 .gpio_disable_free = madera_gpio_disable_free,
735 .gpio_set_direction = madera_gpio_set_direction,
736 .strict = true,
737};
738
739static int madera_pin_conf_get(struct pinctrl_dev *pctldev, unsigned int pin,
740 unsigned long *config)
741{
742 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
743 unsigned int param = pinconf_to_config_param(*config);
744 unsigned int result = 0;
745 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin);
746 unsigned int conf[2];
747 int ret;
748
749 ret = regmap_read(priv->madera->regmap, reg, &conf[0]);
750 if (!ret)
751 ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);
752
753 if (ret) {
754 dev_err(priv->dev, "Failed to read GP%d conf (%d)\n",
755 pin + 1, ret);
756 return ret;
757 }
758
759 switch (param) {
760 case PIN_CONFIG_BIAS_BUS_HOLD:
761 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
762 if (conf[1] == (MADERA_GP1_PU | MADERA_GP1_PD))
763 result = 1;
764 break;
765 case PIN_CONFIG_BIAS_DISABLE:
766 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
767 if (!conf[1])
768 result = 1;
769 break;
770 case PIN_CONFIG_BIAS_PULL_DOWN:
771 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
772 if (conf[1] == MADERA_GP1_PD_MASK)
773 result = 1;
774 break;
775 case PIN_CONFIG_BIAS_PULL_UP:
776 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
777 if (conf[1] == MADERA_GP1_PU_MASK)
778 result = 1;
779 break;
780 case PIN_CONFIG_DRIVE_OPEN_DRAIN:
781 if (conf[0] & MADERA_GP1_OP_CFG_MASK)
782 result = 1;
783 break;
784 case PIN_CONFIG_DRIVE_PUSH_PULL:
785 if (!(conf[0] & MADERA_GP1_OP_CFG_MASK))
786 result = 1;
787 break;
788 case PIN_CONFIG_DRIVE_STRENGTH:
789 result = madera_pin_unmake_drv_str(priv, conf[1]);
790 break;
791 case PIN_CONFIG_INPUT_DEBOUNCE:
792 if (conf[0] & MADERA_GP1_DB_MASK)
793 result = 1;
794 break;
795 case PIN_CONFIG_INPUT_ENABLE:
796 if (conf[0] & MADERA_GP1_DIR_MASK)
797 result = 1;
798 break;
799 case PIN_CONFIG_INPUT_SCHMITT:
800 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
801 if (conf[0] & MADERA_GP1_IP_CFG_MASK)
802 result = 1;
803 break;
804 case PIN_CONFIG_OUTPUT:
805 if ((conf[1] & MADERA_GP1_DIR_MASK) &&
806 (conf[0] & MADERA_GP1_LVL_MASK))
807 result = 1;
808 break;
809 default:
810 return -ENOTSUPP;
811 }
812
813 *config = pinconf_to_config_packed(param, result);
814
815 return 0;
816}
817
818static int madera_pin_conf_set(struct pinctrl_dev *pctldev, unsigned int pin,
819 unsigned long *configs, unsigned int num_configs)
820{
821 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
822 u16 conf[2] = {0, 0};
823 u16 mask[2] = {0, 0};
824 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin);
825 unsigned int val;
826 int ret;
827
828 while (num_configs) {
829 dev_dbg(priv->dev, "%s config 0x%lx\n", __func__, *configs);
830
831 switch (pinconf_to_config_param(*configs)) {
832 case PIN_CONFIG_BIAS_BUS_HOLD:
833 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
834 conf[1] |= MADERA_GP1_PU | MADERA_GP1_PD;
835 break;
836 case PIN_CONFIG_BIAS_DISABLE:
837 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
838 conf[1] &= ~(MADERA_GP1_PU | MADERA_GP1_PD);
839 break;
840 case PIN_CONFIG_BIAS_PULL_DOWN:
841 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
842 conf[1] |= MADERA_GP1_PD;
843 conf[1] &= ~MADERA_GP1_PU;
844 break;
845 case PIN_CONFIG_BIAS_PULL_UP:
846 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
847 conf[1] |= MADERA_GP1_PU;
848 conf[1] &= ~MADERA_GP1_PD;
849 break;
850 case PIN_CONFIG_DRIVE_OPEN_DRAIN:
851 mask[0] |= MADERA_GP1_OP_CFG_MASK;
852 conf[0] |= MADERA_GP1_OP_CFG;
853 break;
854 case PIN_CONFIG_DRIVE_PUSH_PULL:
855 mask[0] |= MADERA_GP1_OP_CFG_MASK;
856 conf[0] &= ~MADERA_GP1_OP_CFG;
857 break;
858 case PIN_CONFIG_DRIVE_STRENGTH:
859 val = pinconf_to_config_argument(*configs);
860 mask[1] |= MADERA_GP1_DRV_STR_MASK;
861 conf[1] &= ~MADERA_GP1_DRV_STR_MASK;
862 conf[1] |= madera_pin_make_drv_str(priv, val);
863 break;
864 case PIN_CONFIG_INPUT_DEBOUNCE:
865 mask[0] |= MADERA_GP1_DB_MASK;
866
867
868
869
870
871 val = pinconf_to_config_argument(*configs);
872 if (val)
873 conf[0] |= MADERA_GP1_DB;
874 else
875 conf[0] &= ~MADERA_GP1_DB;
876 break;
877 case PIN_CONFIG_INPUT_ENABLE:
878 val = pinconf_to_config_argument(*configs);
879 mask[1] |= MADERA_GP1_DIR_MASK;
880 if (val)
881 conf[1] |= MADERA_GP1_DIR;
882 else
883 conf[1] &= ~MADERA_GP1_DIR;
884 break;
885 case PIN_CONFIG_INPUT_SCHMITT:
886 val = pinconf_to_config_argument(*configs);
887 mask[0] |= MADERA_GP1_IP_CFG;
888 if (val)
889 conf[0] |= MADERA_GP1_IP_CFG;
890 else
891 conf[0] &= ~MADERA_GP1_IP_CFG;
892
893 mask[1] |= MADERA_GP1_DIR_MASK;
894 conf[1] |= MADERA_GP1_DIR;
895 break;
896 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
897 mask[0] |= MADERA_GP1_IP_CFG;
898 conf[0] |= MADERA_GP1_IP_CFG;
899 mask[1] |= MADERA_GP1_DIR_MASK;
900 conf[1] |= MADERA_GP1_DIR;
901 break;
902 case PIN_CONFIG_OUTPUT:
903 val = pinconf_to_config_argument(*configs);
904 mask[0] |= MADERA_GP1_LVL_MASK;
905 if (val)
906 conf[0] |= MADERA_GP1_LVL;
907 else
908 conf[0] &= ~MADERA_GP1_LVL;
909
910 mask[1] |= MADERA_GP1_DIR_MASK;
911 conf[1] &= ~MADERA_GP1_DIR;
912 break;
913 default:
914 return -ENOTSUPP;
915 }
916
917 ++configs;
918 --num_configs;
919 }
920
921 dev_dbg(priv->dev,
922 "%s gpio%d 0x%x:0x%x 0x%x:0x%x\n",
923 __func__, pin + 1, reg, conf[0], reg + 1, conf[1]);
924
925 ret = regmap_update_bits(priv->madera->regmap, reg, mask[0], conf[0]);
926 if (ret)
927 goto err;
928
929 ++reg;
930 ret = regmap_update_bits(priv->madera->regmap, reg, mask[1], conf[1]);
931 if (ret)
932 goto err;
933
934 return 0;
935
936err:
937 dev_err(priv->dev,
938 "Failed to write GPIO%d conf (%d) reg 0x%x\n",
939 pin + 1, ret, reg);
940
941 return ret;
942}
943
944static int madera_pin_conf_group_set(struct pinctrl_dev *pctldev,
945 unsigned int selector,
946 unsigned long *configs,
947 unsigned int num_configs)
948{
949 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
950 const struct madera_pin_groups *pin_group;
951 unsigned int n_groups = priv->chip->n_pin_groups;
952 int i, ret;
953
954 dev_dbg(priv->dev, "%s setting group %s\n", __func__,
955 madera_get_group_name(pctldev, selector));
956
957 if (selector >= n_groups) {
958
959 return madera_pin_conf_set(pctldev,
960 selector - n_groups,
961 configs,
962 num_configs);
963 } else {
964 pin_group = &priv->chip->pin_groups[selector];
965
966 for (i = 0; i < pin_group->n_pins; ++i) {
967 ret = madera_pin_conf_set(pctldev,
968 pin_group->pins[i],
969 configs,
970 num_configs);
971 if (ret)
972 return ret;
973 }
974 }
975
976 return 0;
977}
978
979static const struct pinconf_ops madera_pin_conf_ops = {
980 .is_generic = true,
981 .pin_config_get = madera_pin_conf_get,
982 .pin_config_set = madera_pin_conf_set,
983 .pin_config_group_set = madera_pin_conf_group_set,
984};
985
986static struct pinctrl_desc madera_pin_desc = {
987 .name = "madera-pinctrl",
988 .pins = madera_pins,
989 .pctlops = &madera_pin_group_ops,
990 .pmxops = &madera_pin_mux_ops,
991 .confops = &madera_pin_conf_ops,
992 .owner = THIS_MODULE,
993};
994
995static int madera_pin_probe(struct platform_device *pdev)
996{
997 struct madera *madera = dev_get_drvdata(pdev->dev.parent);
998 const struct madera_pdata *pdata = &madera->pdata;
999 struct madera_pin_private *priv;
1000 int ret;
1001
1002 BUILD_BUG_ON(ARRAY_SIZE(madera_pin_single_group_names) !=
1003 ARRAY_SIZE(madera_pin_single_group_pins));
1004
1005 dev_dbg(&pdev->dev, "%s\n", __func__);
1006
1007 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1008 if (!priv)
1009 return -ENOMEM;
1010
1011 priv->dev = &pdev->dev;
1012 priv->madera = madera;
1013 pdev->dev.of_node = madera->dev->of_node;
1014
1015 switch (madera->type) {
1016 case CS47L15:
1017 if (IS_ENABLED(CONFIG_PINCTRL_CS47L15))
1018 priv->chip = &cs47l15_pin_chip;
1019 break;
1020 case CS47L35:
1021 if (IS_ENABLED(CONFIG_PINCTRL_CS47L35))
1022 priv->chip = &cs47l35_pin_chip;
1023 break;
1024 case CS47L85:
1025 case WM1840:
1026 if (IS_ENABLED(CONFIG_PINCTRL_CS47L85))
1027 priv->chip = &cs47l85_pin_chip;
1028 break;
1029 case CS47L90:
1030 case CS47L91:
1031 if (IS_ENABLED(CONFIG_PINCTRL_CS47L90))
1032 priv->chip = &cs47l90_pin_chip;
1033 break;
1034 case CS42L92:
1035 case CS47L92:
1036 case CS47L93:
1037 if (IS_ENABLED(CONFIG_PINCTRL_CS47L92))
1038 priv->chip = &cs47l92_pin_chip;
1039 break;
1040 default:
1041 break;
1042 }
1043
1044 if (!priv->chip)
1045 return -ENODEV;
1046
1047 madera_pin_desc.npins = priv->chip->n_pins;
1048
1049 ret = devm_pinctrl_register_and_init(&pdev->dev,
1050 &madera_pin_desc,
1051 priv,
1052 &priv->pctl);
1053 if (ret) {
1054 dev_err(priv->dev, "Failed pinctrl register (%d)\n", ret);
1055 return ret;
1056 }
1057
1058
1059 if (pdata->gpio_configs) {
1060 ret = pinctrl_register_mappings(pdata->gpio_configs,
1061 pdata->n_gpio_configs);
1062 if (ret) {
1063 dev_err(priv->dev,
1064 "Failed to register pdata mappings (%d)\n",
1065 ret);
1066 return ret;
1067 }
1068 }
1069
1070 ret = pinctrl_enable(priv->pctl);
1071 if (ret) {
1072 dev_err(priv->dev, "Failed to enable pinctrl (%d)\n", ret);
1073 return ret;
1074 }
1075
1076 platform_set_drvdata(pdev, priv);
1077
1078 dev_dbg(priv->dev, "pinctrl probed ok\n");
1079
1080 return 0;
1081}
1082
1083static int madera_pin_remove(struct platform_device *pdev)
1084{
1085 struct madera_pin_private *priv = platform_get_drvdata(pdev);
1086
1087 if (priv->madera->pdata.gpio_configs)
1088 pinctrl_unregister_mappings(priv->madera->pdata.gpio_configs);
1089
1090 return 0;
1091}
1092
1093static struct platform_driver madera_pin_driver = {
1094 .probe = madera_pin_probe,
1095 .remove = madera_pin_remove,
1096 .driver = {
1097 .name = "madera-pinctrl",
1098 },
1099};
1100
1101module_platform_driver(madera_pin_driver);
1102
1103MODULE_DESCRIPTION("Madera pinctrl driver");
1104MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
1105MODULE_LICENSE("GPL v2");
1106
