1 // SPDX-License-Identifier: GPL-2.0
3 * Pinctrl for Cirrus Logic Madera codecs
5 * Copyright (C) 2016-2018 Cirrus Logic
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; version 2.
12 #include <linux/err.h>
13 #include <linux/module.h>
14 #include <linux/platform_device.h>
15 #include <linux/regmap.h>
16 #include <linux/slab.h>
17 #include <linux/pinctrl/pinctrl.h>
18 #include <linux/pinctrl/pinmux.h>
19 #include <linux/pinctrl/pinconf.h>
20 #include <linux/pinctrl/pinconf-generic.h>
22 #include <linux/mfd/madera/core.h>
23 #include <linux/mfd/madera/registers.h>
25 #include "../pinctrl-utils.h"
27 #include "pinctrl-madera.h"
30 * Use pin GPIO names for consistency
31 * NOTE: IDs are zero-indexed for coding convenience
33 static const struct pinctrl_pin_desc madera_pins[] = {
34 PINCTRL_PIN(0, "gpio1"),
35 PINCTRL_PIN(1, "gpio2"),
36 PINCTRL_PIN(2, "gpio3"),
37 PINCTRL_PIN(3, "gpio4"),
38 PINCTRL_PIN(4, "gpio5"),
39 PINCTRL_PIN(5, "gpio6"),
40 PINCTRL_PIN(6, "gpio7"),
41 PINCTRL_PIN(7, "gpio8"),
42 PINCTRL_PIN(8, "gpio9"),
43 PINCTRL_PIN(9, "gpio10"),
44 PINCTRL_PIN(10, "gpio11"),
45 PINCTRL_PIN(11, "gpio12"),
46 PINCTRL_PIN(12, "gpio13"),
47 PINCTRL_PIN(13, "gpio14"),
48 PINCTRL_PIN(14, "gpio15"),
49 PINCTRL_PIN(15, "gpio16"),
50 PINCTRL_PIN(16, "gpio17"),
51 PINCTRL_PIN(17, "gpio18"),
52 PINCTRL_PIN(18, "gpio19"),
53 PINCTRL_PIN(19, "gpio20"),
54 PINCTRL_PIN(20, "gpio21"),
55 PINCTRL_PIN(21, "gpio22"),
56 PINCTRL_PIN(22, "gpio23"),
57 PINCTRL_PIN(23, "gpio24"),
58 PINCTRL_PIN(24, "gpio25"),
59 PINCTRL_PIN(25, "gpio26"),
60 PINCTRL_PIN(26, "gpio27"),
61 PINCTRL_PIN(27, "gpio28"),
62 PINCTRL_PIN(28, "gpio29"),
63 PINCTRL_PIN(29, "gpio30"),
64 PINCTRL_PIN(30, "gpio31"),
65 PINCTRL_PIN(31, "gpio32"),
66 PINCTRL_PIN(32, "gpio33"),
67 PINCTRL_PIN(33, "gpio34"),
68 PINCTRL_PIN(34, "gpio35"),
69 PINCTRL_PIN(35, "gpio36"),
70 PINCTRL_PIN(36, "gpio37"),
71 PINCTRL_PIN(37, "gpio38"),
72 PINCTRL_PIN(38, "gpio39"),
73 PINCTRL_PIN(39, "gpio40"),
77 * All single-pin functions can be mapped to any GPIO, however pinmux applies
78 * functions to pin groups and only those groups declared as supporting that
79 * function. To make this work we must put each pin in its own dummy group so
80 * that the functions can be described as applying to all pins.
81 * Since these do not correspond to anything in the actual hardware - they are
82 * merely an adaptation to pinctrl's view of the world - we use the same name
83 * as the pin to avoid confusion when comparing with datasheet instructions
85 static const char * const madera_pin_single_group_names[] = {
86 "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7",
87 "gpio8", "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14",
88 "gpio15", "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21",
89 "gpio22", "gpio23", "gpio24", "gpio25", "gpio26", "gpio27", "gpio28",
90 "gpio29", "gpio30", "gpio31", "gpio32", "gpio33", "gpio34", "gpio35",
91 "gpio36", "gpio37", "gpio38", "gpio39", "gpio40",
94 /* set of pin numbers for single-pin groups, zero-indexed */
95 static const unsigned int madera_pin_single_group_pins[] = {
97 7, 8, 9, 10, 11, 12, 13,
98 14, 15, 16, 17, 18, 19, 20,
99 21, 22, 23, 24, 25, 26, 27,
100 28, 29, 30, 31, 32, 33, 34,
104 static const char * const madera_aif1_group_names[] = { "aif1" };
105 static const char * const madera_aif2_group_names[] = { "aif2" };
106 static const char * const madera_aif3_group_names[] = { "aif3" };
107 static const char * const madera_aif4_group_names[] = { "aif4" };
108 static const char * const madera_mif1_group_names[] = { "mif1" };
109 static const char * const madera_mif2_group_names[] = { "mif2" };
110 static const char * const madera_mif3_group_names[] = { "mif3" };
111 static const char * const madera_dmic3_group_names[] = { "dmic3" };
112 static const char * const madera_dmic4_group_names[] = { "dmic4" };
113 static const char * const madera_dmic5_group_names[] = { "dmic5" };
114 static const char * const madera_dmic6_group_names[] = { "dmic6" };
115 static const char * const madera_spk1_group_names[] = { "pdmspk1" };
116 static const char * const madera_spk2_group_names[] = { "pdmspk2" };
119 * alt-functions always apply to a single pin group, other functions always
122 static const struct {
124 const char * const *group_names;
126 } madera_mux_funcs[] = {
129 .group_names = madera_aif1_group_names,
134 .group_names = madera_aif2_group_names,
139 .group_names = madera_aif3_group_names,
144 .group_names = madera_aif4_group_names,
149 .group_names = madera_mif1_group_names,
154 .group_names = madera_mif2_group_names,
159 .group_names = madera_mif3_group_names,
164 .group_names = madera_dmic3_group_names,
169 .group_names = madera_dmic4_group_names,
174 .group_names = madera_dmic5_group_names,
179 .group_names = madera_dmic6_group_names,
184 .group_names = madera_spk1_group_names,
189 .group_names = madera_spk2_group_names,
194 .group_names = madera_pin_single_group_names,
199 .group_names = madera_pin_single_group_names,
204 .group_names = madera_pin_single_group_names,
209 .group_names = madera_pin_single_group_names,
214 .group_names = madera_pin_single_group_names,
219 .group_names = madera_pin_single_group_names,
224 .group_names = madera_pin_single_group_names,
229 .group_names = madera_pin_single_group_names,
234 .group_names = madera_pin_single_group_names,
239 .group_names = madera_pin_single_group_names,
244 .group_names = madera_pin_single_group_names,
248 .name = "fllao-lock",
249 .group_names = madera_pin_single_group_names,
254 .group_names = madera_pin_single_group_names,
258 .name = "opclk-async",
259 .group_names = madera_pin_single_group_names,
264 .group_names = madera_pin_single_group_names,
269 .group_names = madera_pin_single_group_names,
274 .group_names = madera_pin_single_group_names,
278 .name = "asrc1-in1-lock",
279 .group_names = madera_pin_single_group_names,
283 .name = "asrc1-in2-lock",
284 .group_names = madera_pin_single_group_names,
288 .name = "asrc2-in1-lock",
289 .group_names = madera_pin_single_group_names,
293 .name = "asrc2-in2-lock",
294 .group_names = madera_pin_single_group_names,
298 .name = "spkl-short-circuit",
299 .group_names = madera_pin_single_group_names,
303 .name = "spkr-short-circuit",
304 .group_names = madera_pin_single_group_names,
308 .name = "spk-shutdown",
309 .group_names = madera_pin_single_group_names,
313 .name = "spk-overheat-shutdown",
314 .group_names = madera_pin_single_group_names,
318 .name = "spk-overheat-warn",
319 .group_names = madera_pin_single_group_names,
323 .name = "timer1-sts",
324 .group_names = madera_pin_single_group_names,
328 .name = "timer2-sts",
329 .group_names = madera_pin_single_group_names,
333 .name = "timer3-sts",
334 .group_names = madera_pin_single_group_names,
338 .name = "timer4-sts",
339 .group_names = madera_pin_single_group_names,
343 .name = "timer5-sts",
344 .group_names = madera_pin_single_group_names,
348 .name = "timer6-sts",
349 .group_names = madera_pin_single_group_names,
353 .name = "timer7-sts",
354 .group_names = madera_pin_single_group_names,
358 .name = "timer8-sts",
359 .group_names = madera_pin_single_group_names,
363 .name = "log1-fifo-ne",
364 .group_names = madera_pin_single_group_names,
368 .name = "log2-fifo-ne",
369 .group_names = madera_pin_single_group_names,
373 .name = "log3-fifo-ne",
374 .group_names = madera_pin_single_group_names,
378 .name = "log4-fifo-ne",
379 .group_names = madera_pin_single_group_names,
383 .name = "log5-fifo-ne",
384 .group_names = madera_pin_single_group_names,
388 .name = "log6-fifo-ne",
389 .group_names = madera_pin_single_group_names,
393 .name = "log7-fifo-ne",
394 .group_names = madera_pin_single_group_names,
398 .name = "log8-fifo-ne",
399 .group_names = madera_pin_single_group_names,
404 static u16 madera_pin_make_drv_str(struct madera_pin_private *priv,
405 unsigned int milliamps)
411 return 2 << MADERA_GP1_DRV_STR_SHIFT;
416 dev_warn(priv->dev, "%u mA not a valid drive strength", milliamps);
421 static unsigned int madera_pin_unmake_drv_str(struct madera_pin_private *priv,
424 regval = (regval & MADERA_GP1_DRV_STR_MASK) >> MADERA_GP1_DRV_STR_SHIFT;
436 static int madera_get_groups_count(struct pinctrl_dev *pctldev)
438 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
440 /* Number of alt function groups plus number of single-pin groups */
441 return priv->chip->n_pin_groups + priv->chip->n_pins;
444 static const char *madera_get_group_name(struct pinctrl_dev *pctldev,
445 unsigned int selector)
447 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
449 if (selector < priv->chip->n_pin_groups)
450 return priv->chip->pin_groups[selector].name;
452 selector -= priv->chip->n_pin_groups;
453 return madera_pin_single_group_names[selector];
456 static int madera_get_group_pins(struct pinctrl_dev *pctldev,
457 unsigned int selector,
458 const unsigned int **pins,
459 unsigned int *num_pins)
461 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
463 if (selector < priv->chip->n_pin_groups) {
464 *pins = priv->chip->pin_groups[selector].pins;
465 *num_pins = priv->chip->pin_groups[selector].n_pins;
467 /* return the dummy group for a single pin */
468 selector -= priv->chip->n_pin_groups;
469 *pins = &madera_pin_single_group_pins[selector];
475 static void madera_pin_dbg_show_fn(struct madera_pin_private *priv,
477 unsigned int pin, unsigned int fn)
479 const struct madera_pin_chip *chip = priv->chip;
483 for (i = 0; i < ARRAY_SIZE(madera_mux_funcs); ++i) {
484 if (madera_mux_funcs[i].func == fn) {
485 seq_printf(s, " FN=%s",
486 madera_mux_funcs[i].name);
490 return; /* ignore unknown function values */
494 for (i = 0; i < chip->n_pin_groups; ++i) {
495 for (g_pin = 0; g_pin < chip->pin_groups[i].n_pins; ++g_pin) {
496 if (chip->pin_groups[i].pins[g_pin] == pin) {
497 seq_printf(s, " FN=%s",
498 chip->pin_groups[i].name);
505 static void __maybe_unused madera_pin_dbg_show(struct pinctrl_dev *pctldev,
509 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
510 unsigned int conf[2];
511 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin);
515 ret = regmap_read(priv->madera->regmap, reg, &conf[0]);
519 ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);
523 seq_printf(s, "%04x:%04x", conf[0], conf[1]);
525 fn = (conf[0] & MADERA_GP1_FN_MASK) >> MADERA_GP1_FN_SHIFT;
526 madera_pin_dbg_show_fn(priv, s, pin, fn);
528 /* State of direction bit is only relevant if function==1 */
530 if (conf[1] & MADERA_GP1_DIR_MASK)
536 if (conf[1] & MADERA_GP1_PU_MASK)
539 if (conf[1] & MADERA_GP1_PD_MASK)
542 if (conf[0] & MADERA_GP1_DB_MASK)
545 if (conf[0] & MADERA_GP1_OP_CFG_MASK)
548 seq_puts(s, " CMOS");
550 seq_printf(s, " DRV=%umA", madera_pin_unmake_drv_str(priv, conf[1]));
552 if (conf[0] & MADERA_GP1_IP_CFG_MASK)
553 seq_puts(s, "SCHMITT");
557 static const struct pinctrl_ops madera_pin_group_ops = {
558 .get_groups_count = madera_get_groups_count,
559 .get_group_name = madera_get_group_name,
560 .get_group_pins = madera_get_group_pins,
561 #if IS_ENABLED(CONFIG_OF)
562 .dt_node_to_map = pinconf_generic_dt_node_to_map_all,
563 .dt_free_map = pinctrl_utils_free_map,
565 #if IS_ENABLED(CONFIG_DEBUG_FS)
566 .pin_dbg_show = madera_pin_dbg_show,
570 static int madera_mux_get_funcs_count(struct pinctrl_dev *pctldev)
572 return ARRAY_SIZE(madera_mux_funcs);
575 static const char *madera_mux_get_func_name(struct pinctrl_dev *pctldev,
576 unsigned int selector)
578 return madera_mux_funcs[selector].name;
581 static int madera_mux_get_groups(struct pinctrl_dev *pctldev,
582 unsigned int selector,
583 const char * const **groups,
584 unsigned int * const num_groups)
586 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
588 *groups = madera_mux_funcs[selector].group_names;
590 if (madera_mux_funcs[selector].func == 0) {
591 /* alt func always maps to a single group */
594 /* other funcs map to all available gpio pins */
595 *num_groups = priv->chip->n_pins;
601 static int madera_mux_set_mux(struct pinctrl_dev *pctldev,
602 unsigned int selector,
605 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
606 struct madera *madera = priv->madera;
607 const struct madera_pin_groups *pin_group = priv->chip->pin_groups;
608 unsigned int n_chip_groups = priv->chip->n_pin_groups;
609 const char *func_name = madera_mux_funcs[selector].name;
613 dev_dbg(priv->dev, "%s selecting %u (%s) for group %u (%s)\n",
614 __func__, selector, func_name, group,
615 madera_get_group_name(pctldev, group));
617 if (madera_mux_funcs[selector].func == 0) {
618 /* alt func pin assignments are codec-specific */
619 for (i = 0; i < n_chip_groups; ++i) {
620 if (strcmp(func_name, pin_group->name) == 0)
626 if (i == n_chip_groups)
629 for (i = 0; i < pin_group->n_pins; ++i) {
630 reg = MADERA_GPIO1_CTRL_1 + (2 * pin_group->pins[i]);
632 dev_dbg(priv->dev, "%s setting 0x%x func bits to 0\n",
635 ret = regmap_update_bits(madera->regmap, reg,
636 MADERA_GP1_FN_MASK, 0);
643 * for other funcs the group will be the gpio number and will
644 * be offset by the number of chip-specific functions at the
645 * start of the group list
647 group -= n_chip_groups;
648 reg = MADERA_GPIO1_CTRL_1 + (2 * group);
650 dev_dbg(priv->dev, "%s setting 0x%x func bits to 0x%x\n",
651 __func__, reg, madera_mux_funcs[selector].func);
653 ret = regmap_update_bits(madera->regmap,
656 madera_mux_funcs[selector].func);
660 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
665 static int madera_gpio_set_direction(struct pinctrl_dev *pctldev,
666 struct pinctrl_gpio_range *range,
670 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
671 struct madera *madera = priv->madera;
672 unsigned int reg = MADERA_GPIO1_CTRL_2 + (2 * offset);
677 val = MADERA_GP1_DIR;
681 ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_DIR_MASK, val);
683 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
688 static int madera_gpio_request_enable(struct pinctrl_dev *pctldev,
689 struct pinctrl_gpio_range *range,
692 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
693 struct madera *madera = priv->madera;
694 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * offset);
697 /* put the pin into GPIO mode */
698 ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);
700 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
705 static void madera_gpio_disable_free(struct pinctrl_dev *pctldev,
706 struct pinctrl_gpio_range *range,
709 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
710 struct madera *madera = priv->madera;
711 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * offset);
714 /* disable GPIO by setting to GPIO IN */
715 madera_gpio_set_direction(pctldev, range, offset, true);
717 ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);
719 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);
722 static const struct pinmux_ops madera_pin_mux_ops = {
723 .get_functions_count = madera_mux_get_funcs_count,
724 .get_function_name = madera_mux_get_func_name,
725 .get_function_groups = madera_mux_get_groups,
726 .set_mux = madera_mux_set_mux,
727 .gpio_request_enable = madera_gpio_request_enable,
728 .gpio_disable_free = madera_gpio_disable_free,
729 .gpio_set_direction = madera_gpio_set_direction,
730 .strict = true, /* GPIO and other functions are exclusive */
733 static int madera_pin_conf_get(struct pinctrl_dev *pctldev, unsigned int pin,
734 unsigned long *config)
736 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
737 unsigned int param = pinconf_to_config_param(*config);
738 unsigned int result = 0;
739 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin);
740 unsigned int conf[2];
743 ret = regmap_read(priv->madera->regmap, reg, &conf[0]);
745 ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);
748 dev_err(priv->dev, "Failed to read GP%d conf (%d)\n",
754 case PIN_CONFIG_BIAS_BUS_HOLD:
755 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
756 if (conf[1] == (MADERA_GP1_PU | MADERA_GP1_PD))
759 case PIN_CONFIG_BIAS_DISABLE:
760 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
764 case PIN_CONFIG_BIAS_PULL_DOWN:
765 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
766 if (conf[1] == MADERA_GP1_PD_MASK)
769 case PIN_CONFIG_BIAS_PULL_UP:
770 conf[1] &= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
771 if (conf[1] == MADERA_GP1_PU_MASK)
774 case PIN_CONFIG_DRIVE_OPEN_DRAIN:
775 if (conf[0] & MADERA_GP1_OP_CFG_MASK)
778 case PIN_CONFIG_DRIVE_PUSH_PULL:
779 if (!(conf[0] & MADERA_GP1_OP_CFG_MASK))
782 case PIN_CONFIG_DRIVE_STRENGTH:
783 result = madera_pin_unmake_drv_str(priv, conf[1]);
785 case PIN_CONFIG_INPUT_DEBOUNCE:
786 if (conf[0] & MADERA_GP1_DB_MASK)
789 case PIN_CONFIG_INPUT_ENABLE:
790 if (conf[0] & MADERA_GP1_DIR_MASK)
793 case PIN_CONFIG_INPUT_SCHMITT:
794 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
795 if (conf[0] & MADERA_GP1_IP_CFG_MASK)
798 case PIN_CONFIG_OUTPUT:
799 if ((conf[1] & MADERA_GP1_DIR_MASK) &&
800 (conf[0] & MADERA_GP1_LVL_MASK))
807 *config = pinconf_to_config_packed(param, result);
812 static int madera_pin_conf_set(struct pinctrl_dev *pctldev, unsigned int pin,
813 unsigned long *configs, unsigned int num_configs)
815 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
816 u16 conf[2] = {0, 0};
817 u16 mask[2] = {0, 0};
818 unsigned int reg = MADERA_GPIO1_CTRL_1 + (2 * pin);
822 while (num_configs) {
823 dev_dbg(priv->dev, "%s config 0x%lx\n", __func__, *configs);
825 switch (pinconf_to_config_param(*configs)) {
826 case PIN_CONFIG_BIAS_BUS_HOLD:
827 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
828 conf[1] |= MADERA_GP1_PU | MADERA_GP1_PD;
830 case PIN_CONFIG_BIAS_DISABLE:
831 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
832 conf[1] &= ~(MADERA_GP1_PU | MADERA_GP1_PD);
834 case PIN_CONFIG_BIAS_PULL_DOWN:
835 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
836 conf[1] |= MADERA_GP1_PD;
837 conf[1] &= ~MADERA_GP1_PU;
839 case PIN_CONFIG_BIAS_PULL_UP:
840 mask[1] |= MADERA_GP1_PU_MASK | MADERA_GP1_PD_MASK;
841 conf[1] |= MADERA_GP1_PU;
842 conf[1] &= ~MADERA_GP1_PD;
844 case PIN_CONFIG_DRIVE_OPEN_DRAIN:
845 mask[0] |= MADERA_GP1_OP_CFG_MASK;
846 conf[0] |= MADERA_GP1_OP_CFG;
848 case PIN_CONFIG_DRIVE_PUSH_PULL:
849 mask[0] |= MADERA_GP1_OP_CFG_MASK;
850 conf[0] &= ~MADERA_GP1_OP_CFG;
852 case PIN_CONFIG_DRIVE_STRENGTH:
853 val = pinconf_to_config_argument(*configs);
854 mask[1] |= MADERA_GP1_DRV_STR_MASK;
855 conf[1] &= ~MADERA_GP1_DRV_STR_MASK;
856 conf[1] |= madera_pin_make_drv_str(priv, val);
858 case PIN_CONFIG_INPUT_DEBOUNCE:
859 mask[0] |= MADERA_GP1_DB_MASK;
862 * we can't configure debounce time per-pin so value
865 val = pinconf_to_config_argument(*configs);
867 conf[0] |= MADERA_GP1_DB;
869 conf[0] &= ~MADERA_GP1_DB;
871 case PIN_CONFIG_INPUT_ENABLE:
872 val = pinconf_to_config_argument(*configs);
873 mask[1] |= MADERA_GP1_DIR_MASK;
875 conf[1] |= MADERA_GP1_DIR;
877 conf[1] &= ~MADERA_GP1_DIR;
879 case PIN_CONFIG_INPUT_SCHMITT:
880 val = pinconf_to_config_argument(*configs);
881 mask[0] |= MADERA_GP1_IP_CFG;
883 conf[0] |= MADERA_GP1_IP_CFG;
885 conf[0] &= ~MADERA_GP1_IP_CFG;
887 mask[1] |= MADERA_GP1_DIR_MASK;
888 conf[1] |= MADERA_GP1_DIR;
890 case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
891 mask[0] |= MADERA_GP1_IP_CFG;
892 conf[0] |= MADERA_GP1_IP_CFG;
893 mask[1] |= MADERA_GP1_DIR_MASK;
894 conf[1] |= MADERA_GP1_DIR;
896 case PIN_CONFIG_OUTPUT:
897 val = pinconf_to_config_argument(*configs);
898 mask[0] |= MADERA_GP1_LVL_MASK;
900 conf[0] |= MADERA_GP1_LVL;
902 conf[0] &= ~MADERA_GP1_LVL;
904 mask[1] |= MADERA_GP1_DIR_MASK;
905 conf[1] &= ~MADERA_GP1_DIR;
916 "%s gpio%d 0x%x:0x%x 0x%x:0x%x\n",
917 __func__, pin + 1, reg, conf[0], reg + 1, conf[1]);
919 ret = regmap_update_bits(priv->madera->regmap, reg, mask[0], conf[0]);
924 ret = regmap_update_bits(priv->madera->regmap, reg, mask[1], conf[1]);
932 "Failed to write GPIO%d conf (%d) reg 0x%x\n",
938 static int madera_pin_conf_group_set(struct pinctrl_dev *pctldev,
939 unsigned int selector,
940 unsigned long *configs,
941 unsigned int num_configs)
943 struct madera_pin_private *priv = pinctrl_dev_get_drvdata(pctldev);
944 const struct madera_pin_groups *pin_group;
945 unsigned int n_groups = priv->chip->n_pin_groups;
948 dev_dbg(priv->dev, "%s setting group %s\n", __func__,
949 madera_get_group_name(pctldev, selector));
951 if (selector >= n_groups) {
952 /* group is a single pin, convert to pin number and set */
953 return madera_pin_conf_set(pctldev,
958 pin_group = &priv->chip->pin_groups[selector];
960 for (i = 0; i < pin_group->n_pins; ++i) {
961 ret = madera_pin_conf_set(pctldev,
973 static const struct pinconf_ops madera_pin_conf_ops = {
974 .pin_config_get = madera_pin_conf_get,
975 .pin_config_set = madera_pin_conf_set,
976 .pin_config_group_set = madera_pin_conf_group_set,
980 static struct pinctrl_desc madera_pin_desc = {
981 .name = "madera-pinctrl",
983 .pctlops = &madera_pin_group_ops,
984 .pmxops = &madera_pin_mux_ops,
985 .confops = &madera_pin_conf_ops,
986 .owner = THIS_MODULE,
989 static int madera_pin_probe(struct platform_device *pdev)
991 struct madera *madera = dev_get_drvdata(pdev->dev.parent);
992 const struct madera_pdata *pdata = dev_get_platdata(madera->dev);
993 struct madera_pin_private *priv;
996 BUILD_BUG_ON(ARRAY_SIZE(madera_pin_single_group_names) !=
997 ARRAY_SIZE(madera_pin_single_group_pins));
999 dev_dbg(&pdev->dev, "%s\n", __func__);
1001 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1005 priv->dev = &pdev->dev;
1006 priv->madera = madera;
1007 pdev->dev.of_node = madera->dev->of_node;
1009 switch (madera->type) {
1011 if (IS_ENABLED(CONFIG_PINCTRL_CS47L35))
1012 priv->chip = &cs47l35_pin_chip;
1016 if (IS_ENABLED(CONFIG_PINCTRL_CS47L85))
1017 priv->chip = &cs47l85_pin_chip;
1021 if (IS_ENABLED(CONFIG_PINCTRL_CS47L90))
1022 priv->chip = &cs47l90_pin_chip;
1031 madera_pin_desc.npins = priv->chip->n_pins;
1033 ret = devm_pinctrl_register_and_init(&pdev->dev,
1038 dev_err(priv->dev, "Failed pinctrl register (%d)\n", ret);
1042 /* if the configuration is provided through pdata, apply it */
1043 if (pdata && pdata->gpio_configs) {
1044 ret = pinctrl_register_mappings(pdata->gpio_configs,
1045 pdata->n_gpio_configs);
1048 "Failed to register pdata mappings (%d)\n",
1054 ret = pinctrl_enable(priv->pctl);
1056 dev_err(priv->dev, "Failed to enable pinctrl (%d)\n", ret);
1060 dev_dbg(priv->dev, "pinctrl probed ok\n");
1065 static struct platform_driver madera_pin_driver = {
1066 .probe = madera_pin_probe,
1068 .name = "madera-pinctrl",
1072 module_platform_driver(madera_pin_driver);
1074 MODULE_DESCRIPTION("Madera pinctrl driver");
1075 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
1076 MODULE_LICENSE("GPL v2");