1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2016-2018 Cirrus Logic
17 #include <linux/pinctrl/pinconf-generic.h>
25 #include "../pinctrl-utils.h"
27 #include "pinctrl-madera.h"
31  * NOTE: IDs are zero-indexed for coding convenience
77  * All single-pin functions can be mapped to any GPIO, however pinmux applies
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
94 /* set of pin numbers for single-pin groups, zero-indexed */
119  * alt-functions always apply to a single pin group, other functions always
198 		.name = "dsp-gpio",
213 		.name = "fll1-clk",
218 		.name = "fll2-clk",
223 		.name = "fll3-clk",
228 		.name = "fllao-clk",
233 		.name = "fll1-lock",
238 		.name = "fll2-lock",
243 		.name = "fll3-lock",
248 		.name = "fllao-lock",
258 		.name = "opclk-async",
278 		.name = "asrc1-in1-lock",
283 		.name = "asrc1-in2-lock",
288 		.name = "asrc2-in1-lock",
293 		.name = "asrc2-in2-lock",
298 		.name = "spkl-short-circuit",
303 		.name = "spkr-short-circuit",
308 		.name = "spk-shutdown",
313 		.name = "spk-overheat-shutdown",
318 		.name = "spk-overheat-warn",
323 		.name = "timer1-sts",
328 		.name = "timer2-sts",
333 		.name = "timer3-sts",
338 		.name = "timer4-sts",
343 		.name = "timer5-sts",
348 		.name = "timer6-sts",
353 		.name = "timer7-sts",
358 		.name = "timer8-sts",
363 		.name = "log1-fifo-ne",
368 		.name = "log2-fifo-ne",
373 		.name = "log3-fifo-ne",
378 		.name = "log4-fifo-ne",
383 		.name = "log5-fifo-ne",
388 		.name = "log6-fifo-ne",
393 		.name = "log7-fifo-ne",
398 		.name = "log8-fifo-ne",
403 		.name = "aux-pdm-clk",
408 		.name = "aux-pdm-dat",
426 	dev_warn(priv->dev, "%u mA not a valid drive strength", milliamps);  in madera_pin_make_drv_str()
450 	/* Number of alt function groups plus number of single-pin groups */  in madera_get_groups_count()
451 	return priv->chip->n_pin_groups + priv->chip->n_pins;  in madera_get_groups_count()
459 	if (selector < priv->chip->n_pin_groups)  in madera_get_group_name()
460 		return priv->chip->pin_groups[selector].name;  in madera_get_group_name()
462 	selector -= priv->chip->n_pin_groups;  in madera_get_group_name()
473 	if (selector < priv->chip->n_pin_groups) {  in madera_get_group_pins()
474 		*pins = priv->chip->pin_groups[selector].pins;  in madera_get_group_pins()
475 		*num_pins = priv->chip->pin_groups[selector].n_pins;  in madera_get_group_pins()
478 		selector -= priv->chip->n_pin_groups;  in madera_get_group_pins()
489 	const struct madera_pin_chip *chip = priv->chip;  in madera_pin_dbg_show_fn()
504 	for (i = 0; i < chip->n_pin_groups; ++i) {  in madera_pin_dbg_show_fn()
505 		for (g_pin = 0; g_pin < chip->pin_groups[i].n_pins; ++g_pin) {  in madera_pin_dbg_show_fn()
506 			if (chip->pin_groups[i].pins[g_pin] == pin) {  in madera_pin_dbg_show_fn()
508 					   chip->pin_groups[i].name);  in madera_pin_dbg_show_fn()
525 	ret = regmap_read(priv->madera->regmap, reg, &conf[0]);  in madera_pin_dbg_show()
529 	ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);  in madera_pin_dbg_show()
604 		*num_groups = priv->chip->n_pins;  in madera_mux_get_groups()
615 	struct madera *madera = priv->madera;  in madera_mux_set_mux()
616 	const struct madera_pin_groups *pin_group = priv->chip->pin_groups;  in madera_mux_set_mux()
617 	unsigned int n_chip_groups = priv->chip->n_pin_groups;  in madera_mux_set_mux()
622 	dev_dbg(priv->dev, "%s selecting %u (%s) for group %u (%s)\n",  in madera_mux_set_mux()
627 		/* alt func pin assignments are codec-specific */  in madera_mux_set_mux()
629 			if (strcmp(func_name, pin_group->name) == 0)  in madera_mux_set_mux()
636 			return -EINVAL;  in madera_mux_set_mux()
638 		for (i = 0; i < pin_group->n_pins; ++i) {  in madera_mux_set_mux()
639 			reg = MADERA_GPIO1_CTRL_1 + (2 * pin_group->pins[i]);  in madera_mux_set_mux()
641 			dev_dbg(priv->dev, "%s setting 0x%x func bits to 0\n",  in madera_mux_set_mux()
644 			ret = regmap_update_bits(madera->regmap, reg,  in madera_mux_set_mux()
653 		 * be offset by the number of chip-specific functions at the  in madera_mux_set_mux()
656 		group -= n_chip_groups;  in madera_mux_set_mux()
659 		dev_dbg(priv->dev, "%s setting 0x%x func bits to 0x%x\n",  in madera_mux_set_mux()
662 		ret = regmap_update_bits(madera->regmap,  in madera_mux_set_mux()
669 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_mux_set_mux()
680 	struct madera *madera = priv->madera;  in madera_gpio_set_direction()
690 	ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_DIR_MASK, val);  in madera_gpio_set_direction()
692 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_gpio_set_direction()
702 	struct madera *madera = priv->madera;  in madera_gpio_request_enable()
707 	ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);  in madera_gpio_request_enable()
709 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_gpio_request_enable()
719 	struct madera *madera = priv->madera;  in madera_gpio_disable_free()
726 	ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);  in madera_gpio_disable_free()
728 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_gpio_disable_free()
752 	ret = regmap_read(priv->madera->regmap, reg, &conf[0]);  in madera_pin_conf_get()
754 		ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);  in madera_pin_conf_get()
757 		dev_err(priv->dev, "Failed to read GP%d conf (%d)\n",  in madera_pin_conf_get()
813 		return -ENOTSUPP;  in madera_pin_conf_get()
832 		dev_dbg(priv->dev, "%s config 0x%lx\n", __func__, *configs);  in madera_pin_conf_set()
871 			 * we can't configure debounce time per-pin so value  in madera_pin_conf_set()
917 			return -ENOTSUPP;  in madera_pin_conf_set()
921 		--num_configs;  in madera_pin_conf_set()
924 	dev_dbg(priv->dev,  in madera_pin_conf_set()
928 	ret = regmap_update_bits(priv->madera->regmap, reg, mask[0], conf[0]);  in madera_pin_conf_set()
933 	ret = regmap_update_bits(priv->madera->regmap, reg, mask[1], conf[1]);  in madera_pin_conf_set()
940 	dev_err(priv->dev,  in madera_pin_conf_set()
954 	unsigned int n_groups = priv->chip->n_pin_groups;  in madera_pin_conf_group_set()
957 	dev_dbg(priv->dev, "%s setting group %s\n", __func__,  in madera_pin_conf_group_set()
963 					   selector - n_groups,  in madera_pin_conf_group_set()
967 		pin_group = &priv->chip->pin_groups[selector];  in madera_pin_conf_group_set()
969 		for (i = 0; i < pin_group->n_pins; ++i) {  in madera_pin_conf_group_set()
971 						  pin_group->pins[i],  in madera_pin_conf_group_set()
990 	.name = "madera-pinctrl",
1000 	struct madera *madera = dev_get_drvdata(pdev->dev.parent);  in madera_pin_probe()
1001 	const struct madera_pdata *pdata = &madera->pdata;  in madera_pin_probe()
1008 	dev_dbg(&pdev->dev, "%s\n", __func__);  in madera_pin_probe()
1010 	device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent));  in madera_pin_probe()
1012 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in madera_pin_probe()
1014 		return -ENOMEM;  in madera_pin_probe()
1016 	priv->dev = &pdev->dev;  in madera_pin_probe()
1017 	priv->madera = madera;  in madera_pin_probe()
1019 	switch (madera->type) {  in madera_pin_probe()
1022 			priv->chip = &cs47l15_pin_chip;  in madera_pin_probe()
1026 			priv->chip = &cs47l35_pin_chip;  in madera_pin_probe()
1031 			priv->chip = &cs47l85_pin_chip;  in madera_pin_probe()
1036 			priv->chip = &cs47l90_pin_chip;  in madera_pin_probe()
1042 			priv->chip = &cs47l92_pin_chip;  in madera_pin_probe()
1048 	if (!priv->chip)  in madera_pin_probe()
1049 		return -ENODEV;  in madera_pin_probe()
1051 	madera_pin_desc.npins = priv->chip->n_pins;  in madera_pin_probe()
1053 	ret = devm_pinctrl_register_and_init(&pdev->dev,  in madera_pin_probe()
1056 					     &priv->pctl);  in madera_pin_probe()
1058 		dev_err(priv->dev, "Failed pinctrl register (%d)\n", ret);  in madera_pin_probe()
1063 	if (pdata->gpio_configs) {  in madera_pin_probe()
1064 		ret = pinctrl_register_mappings(pdata->gpio_configs,  in madera_pin_probe()
1065 						pdata->n_gpio_configs);  in madera_pin_probe()
1067 			return dev_err_probe(priv->dev, ret,  in madera_pin_probe()
1071 	ret = pinctrl_enable(priv->pctl);  in madera_pin_probe()
1073 		dev_err(priv->dev, "Failed to enable pinctrl (%d)\n", ret);  in madera_pin_probe()
1079 	dev_dbg(priv->dev, "pinctrl probed ok\n");  in madera_pin_probe()
1088 	if (priv->madera->pdata.gpio_configs)  in madera_pin_remove()
1089 		pinctrl_unregister_mappings(priv->madera->pdata.gpio_configs);  in madera_pin_remove()
1096 		.name = "madera-pinctrl",