1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2016-2018 Cirrus Logic
17 #include <linux/pinctrl/pinconf-generic.h>
22 #include "../pinctrl-utils.h"
24 #include "pinctrl-madera.h"
28  * NOTE: IDs are zero-indexed for coding convenience
74  * All single-pin functions can be mapped to any GPIO, however pinmux applies
78  * Since these do not correspond to anything in the actual hardware - they are
79  * merely an adaptation to pinctrl's view of the world - we use the same name
91 /* set of pin numbers for single-pin groups, zero-indexed */
116  * alt-functions always apply to a single pin group, other functions always
195 		.name = "dsp-gpio",
210 		.name = "fll1-clk",
215 		.name = "fll2-clk",
220 		.name = "fll3-clk",
225 		.name = "fllao-clk",
230 		.name = "fll1-lock",
235 		.name = "fll2-lock",
240 		.name = "fll3-lock",
245 		.name = "fllao-lock",
255 		.name = "opclk-async",
275 		.name = "asrc1-in1-lock",
280 		.name = "asrc1-in2-lock",
285 		.name = "asrc2-in1-lock",
290 		.name = "asrc2-in2-lock",
295 		.name = "spkl-short-circuit",
300 		.name = "spkr-short-circuit",
305 		.name = "spk-shutdown",
310 		.name = "spk-overheat-shutdown",
315 		.name = "spk-overheat-warn",
320 		.name = "timer1-sts",
325 		.name = "timer2-sts",
330 		.name = "timer3-sts",
335 		.name = "timer4-sts",
340 		.name = "timer5-sts",
345 		.name = "timer6-sts",
350 		.name = "timer7-sts",
355 		.name = "timer8-sts",
360 		.name = "log1-fifo-ne",
365 		.name = "log2-fifo-ne",
370 		.name = "log3-fifo-ne",
375 		.name = "log4-fifo-ne",
380 		.name = "log5-fifo-ne",
385 		.name = "log6-fifo-ne",
390 		.name = "log7-fifo-ne",
395 		.name = "log8-fifo-ne",
400 		.name = "aux-pdm-clk",
405 		.name = "aux-pdm-dat",
423 	dev_warn(priv->dev, "%u mA not a valid drive strength", milliamps);  in madera_pin_make_drv_str()
447 	/* Number of alt function groups plus number of single-pin groups */  in madera_get_groups_count()
448 	return priv->chip->n_pin_groups + priv->chip->n_pins;  in madera_get_groups_count()
456 	if (selector < priv->chip->n_pin_groups)  in madera_get_group_name()
457 		return priv->chip->pin_groups[selector].name;  in madera_get_group_name()
459 	selector -= priv->chip->n_pin_groups;  in madera_get_group_name()
470 	if (selector < priv->chip->n_pin_groups) {  in madera_get_group_pins()
471 		*pins = priv->chip->pin_groups[selector].pins;  in madera_get_group_pins()
472 		*num_pins = priv->chip->pin_groups[selector].n_pins;  in madera_get_group_pins()
474 		/* return the dummy group for a single pin */  in madera_get_group_pins()
475 		selector -= priv->chip->n_pin_groups;  in madera_get_group_pins()
486 	const struct madera_pin_chip *chip = priv->chip;  in madera_pin_dbg_show_fn()  local
501 	for (i = 0; i < chip->n_pin_groups; ++i) {  in madera_pin_dbg_show_fn()
502 		for (g_pin = 0; g_pin < chip->pin_groups[i].n_pins; ++g_pin) {  in madera_pin_dbg_show_fn()
503 			if (chip->pin_groups[i].pins[g_pin] == pin) {  in madera_pin_dbg_show_fn()
505 					   chip->pin_groups[i].name);  in madera_pin_dbg_show_fn()
522 	ret = regmap_read(priv->madera->regmap, reg, &conf[0]);  in madera_pin_dbg_show()
526 	ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);  in madera_pin_dbg_show()
597 		/* alt func always maps to a single group */  in madera_mux_get_groups()
601 		*num_groups = priv->chip->n_pins;  in madera_mux_get_groups()
612 	struct madera *madera = priv->madera;  in madera_mux_set_mux()
613 	const struct madera_pin_groups *pin_group = priv->chip->pin_groups;  in madera_mux_set_mux()
614 	unsigned int n_chip_groups = priv->chip->n_pin_groups;  in madera_mux_set_mux()
619 	dev_dbg(priv->dev, "%s selecting %u (%s) for group %u (%s)\n",  in madera_mux_set_mux()
624 		/* alt func pin assignments are codec-specific */  in madera_mux_set_mux()
626 			if (strcmp(func_name, pin_group->name) == 0)  in madera_mux_set_mux()
633 			return -EINVAL;  in madera_mux_set_mux()
635 		for (i = 0; i < pin_group->n_pins; ++i) {  in madera_mux_set_mux()
636 			reg = MADERA_GPIO1_CTRL_1 + (2 * pin_group->pins[i]);  in madera_mux_set_mux()
638 			dev_dbg(priv->dev, "%s setting 0x%x func bits to 0\n",  in madera_mux_set_mux()
641 			ret = regmap_update_bits(madera->regmap, reg,  in madera_mux_set_mux()
650 		 * be offset by the number of chip-specific functions at the  in madera_mux_set_mux()
653 		group -= n_chip_groups;  in madera_mux_set_mux()
656 		dev_dbg(priv->dev, "%s setting 0x%x func bits to 0x%x\n",  in madera_mux_set_mux()
659 		ret = regmap_update_bits(madera->regmap,  in madera_mux_set_mux()
666 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_mux_set_mux()
677 	struct madera *madera = priv->madera;  in madera_gpio_set_direction()
687 	ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_DIR_MASK, val);  in madera_gpio_set_direction()
689 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_gpio_set_direction()
699 	struct madera *madera = priv->madera;  in madera_gpio_request_enable()
704 	ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);  in madera_gpio_request_enable()
706 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_gpio_request_enable()
716 	struct madera *madera = priv->madera;  in madera_gpio_disable_free()
723 	ret = regmap_update_bits(madera->regmap, reg, MADERA_GP1_FN_MASK, 1);  in madera_gpio_disable_free()
725 		dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);  in madera_gpio_disable_free()
749 	ret = regmap_read(priv->madera->regmap, reg, &conf[0]);  in madera_pin_conf_get()
751 		ret = regmap_read(priv->madera->regmap, reg + 1, &conf[1]);  in madera_pin_conf_get()
754 		dev_err(priv->dev, "Failed to read GP%d conf (%d)\n",  in madera_pin_conf_get()
810 		return -ENOTSUPP;  in madera_pin_conf_get()
829 		dev_dbg(priv->dev, "%s config 0x%lx\n", __func__, *configs);  in madera_pin_conf_set()
868 			 * we can't configure debounce time per-pin so value  in madera_pin_conf_set()
914 			return -ENOTSUPP;  in madera_pin_conf_set()
918 		--num_configs;  in madera_pin_conf_set()
921 	dev_dbg(priv->dev,  in madera_pin_conf_set()
925 	ret = regmap_update_bits(priv->madera->regmap, reg, mask[0], conf[0]);  in madera_pin_conf_set()
930 	ret = regmap_update_bits(priv->madera->regmap, reg, mask[1], conf[1]);  in madera_pin_conf_set()
937 	dev_err(priv->dev,  in madera_pin_conf_set()
951 	unsigned int n_groups = priv->chip->n_pin_groups;  in madera_pin_conf_group_set()
954 	dev_dbg(priv->dev, "%s setting group %s\n", __func__,  in madera_pin_conf_group_set()
958 		/* group is a single pin, convert to pin number and set */  in madera_pin_conf_group_set()
960 					   selector - n_groups,  in madera_pin_conf_group_set()
964 		pin_group = &priv->chip->pin_groups[selector];  in madera_pin_conf_group_set()
966 		for (i = 0; i < pin_group->n_pins; ++i) {  in madera_pin_conf_group_set()
968 						  pin_group->pins[i],  in madera_pin_conf_group_set()
987 	.name = "madera-pinctrl",
997 	struct madera *madera = dev_get_drvdata(pdev->dev.parent);  in madera_pin_probe()
998 	const struct madera_pdata *pdata = &madera->pdata;  in madera_pin_probe()
1005 	dev_dbg(&pdev->dev, "%s\n", __func__);  in madera_pin_probe()
1007 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in madera_pin_probe()
1009 		return -ENOMEM;  in madera_pin_probe()
1011 	priv->dev = &pdev->dev;  in madera_pin_probe()
1012 	priv->madera = madera;  in madera_pin_probe()
1013 	pdev->dev.of_node = madera->dev->of_node;  in madera_pin_probe()
1015 	switch (madera->type) {  in madera_pin_probe()
1018 			priv->chip = &cs47l15_pin_chip;  in madera_pin_probe()
1022 			priv->chip = &cs47l35_pin_chip;  in madera_pin_probe()
1027 			priv->chip = &cs47l85_pin_chip;  in madera_pin_probe()
1032 			priv->chip = &cs47l90_pin_chip;  in madera_pin_probe()
1038 			priv->chip = &cs47l92_pin_chip;  in madera_pin_probe()
1044 	if (!priv->chip)  in madera_pin_probe()
1045 		return -ENODEV;  in madera_pin_probe()
1047 	madera_pin_desc.npins = priv->chip->n_pins;  in madera_pin_probe()
1049 	ret = devm_pinctrl_register_and_init(&pdev->dev,  in madera_pin_probe()
1052 					     &priv->pctl);  in madera_pin_probe()
1054 		dev_err(priv->dev, "Failed pinctrl register (%d)\n", ret);  in madera_pin_probe()
1059 	if (pdata->gpio_configs) {  in madera_pin_probe()
1060 		ret = pinctrl_register_mappings(pdata->gpio_configs,  in madera_pin_probe()
1061 						pdata->n_gpio_configs);  in madera_pin_probe()
1063 			dev_err(priv->dev,  in madera_pin_probe()
1070 	ret = pinctrl_enable(priv->pctl);  in madera_pin_probe()
1072 		dev_err(priv->dev, "Failed to enable pinctrl (%d)\n", ret);  in madera_pin_probe()
1078 	dev_dbg(priv->dev, "pinctrl probed ok\n");  in madera_pin_probe()
1087 	if (priv->madera->pdata.gpio_configs)  in madera_pin_remove()
1088 		pinctrl_unregister_mappings(priv->madera->pdata.gpio_configs);  in madera_pin_remove()
1097 		.name = "madera-pinctrl",