1 // SPDX-License-Identifier: GPL-2.0
3  * MediaTek Pinctrl Moore Driver, which implement the generic dt-binding
4  * pinctrl-bindings.txt for MediaTek SoC.
6  * Copyright (C) 2017-2018 MediaTek Inc.
12 #include "pinctrl-moore.h"
25 	{"mediatek,pull-up-adv", MTK_PIN_CONFIG_PU_ADV,		1},
26 	{"mediatek,pull-down-adv", MTK_PIN_CONFIG_PD_ADV,	1},
33 	PCONFDUMP(MTK_PIN_CONFIG_PU_ADV, "pu-adv", NULL, true),
34 	PCONFDUMP(MTK_PIN_CONFIG_PD_ADV, "pd-adv", NULL, true),
48 		return -EINVAL;  in mtk_pinmux_set_mux()
52 		return -EINVAL;  in mtk_pinmux_set_mux()
54 	dev_dbg(pctldev->dev, "enable function %s group %s\n",  in mtk_pinmux_set_mux()
55 		func->name, grp->name);  in mtk_pinmux_set_mux()
57 	for (i = 0; i < grp->num_pins; i++) {  in mtk_pinmux_set_mux()
59 		int *pin_modes = grp->data;  in mtk_pinmux_set_mux()
60 		int pin = grp->pins[i];  in mtk_pinmux_set_mux()
62 		desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];  in mtk_pinmux_set_mux()
78 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];  in mtk_pinmux_gpio_request_enable()
81 				hw->soc->gpio_m);  in mtk_pinmux_gpio_request_enable()
91 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];  in mtk_pinmux_gpio_set_direction()
105 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];  in mtk_pinconf_get()
109 		if (hw->soc->bias_disable_get) {  in mtk_pinconf_get()
110 			err = hw->soc->bias_disable_get(hw, desc, &ret);  in mtk_pinconf_get()
114 			return -ENOTSUPP;  in mtk_pinconf_get()
118 		if (hw->soc->bias_get) {  in mtk_pinconf_get()
119 			err = hw->soc->bias_get(hw, desc, 1, &ret);  in mtk_pinconf_get()
123 			return -ENOTSUPP;  in mtk_pinconf_get()
127 		if (hw->soc->bias_get) {  in mtk_pinconf_get()
128 			err = hw->soc->bias_get(hw, desc, 0, &ret);  in mtk_pinconf_get()
132 			return -ENOTSUPP;  in mtk_pinconf_get()
141 			return -EINVAL;  in mtk_pinconf_get()
150 		/* HW takes input mode as zero; output mode as non-zero */  in mtk_pinconf_get()
153 			return -EINVAL;  in mtk_pinconf_get()
166 			return -EINVAL;  in mtk_pinconf_get()
170 		if (hw->soc->drive_get) {  in mtk_pinconf_get()
171 			err = hw->soc->drive_get(hw, desc, &ret);  in mtk_pinconf_get()
175 			err = -ENOTSUPP;  in mtk_pinconf_get()
192 		if (hw->soc->adv_pull_get) {  in mtk_pinconf_get()
196 			err = hw->soc->adv_pull_get(hw, desc, pullup, &ret);  in mtk_pinconf_get()
200 			return -ENOTSUPP;  in mtk_pinconf_get()
204 		return -ENOTSUPP;  in mtk_pinconf_get()
220 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];  in mtk_pinconf_set()
228 			if (hw->soc->bias_disable_set) {  in mtk_pinconf_set()
229 				err = hw->soc->bias_disable_set(hw, desc);  in mtk_pinconf_set()
233 				return -ENOTSUPP;  in mtk_pinconf_set()
237 			if (hw->soc->bias_set) {  in mtk_pinconf_set()
238 				err = hw->soc->bias_set(hw, desc, 1);  in mtk_pinconf_set()
242 				return -ENOTSUPP;  in mtk_pinconf_set()
246 			if (hw->soc->bias_set) {  in mtk_pinconf_set()
247 				err = hw->soc->bias_set(hw, desc, 0);  in mtk_pinconf_set()
251 				return -ENOTSUPP;  in mtk_pinconf_set()
267 			if (hw->soc->ies_present) {  in mtk_pinconf_set()
311 			if (hw->soc->drive_set) {  in mtk_pinconf_set()
312 				err = hw->soc->drive_set(hw, desc, arg);  in mtk_pinconf_set()
316 				err = -ENOTSUPP;  in mtk_pinconf_set()
330 			if (hw->soc->adv_pull_set) {  in mtk_pinconf_set()
334 				err = hw->soc->adv_pull_set(hw, desc, pullup,  in mtk_pinconf_set()
339 				return -ENOTSUPP;  in mtk_pinconf_set()
343 			err = -ENOTSUPP;  in mtk_pinconf_set()
363 			return -ENOTSUPP;  in mtk_pinconf_group_get()
367 			return -ENOTSUPP;  in mtk_pinconf_group_get()
437 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];  in mtk_gpio_get()
451 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];  in mtk_gpio_set()
458 	return pinctrl_gpio_direction_input(chip->base + gpio);  in mtk_gpio_direction_input()
466 	return pinctrl_gpio_direction_output(chip->base + gpio);  in mtk_gpio_direction_output()
474 	if (!hw->eint)  in mtk_gpio_to_irq()
475 		return -ENOTSUPP;  in mtk_gpio_to_irq()
477 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];  in mtk_gpio_to_irq()
479 	if (desc->eint.eint_n == (u16)EINT_NA)  in mtk_gpio_to_irq()
480 		return -ENOTSUPP;  in mtk_gpio_to_irq()
482 	return mtk_eint_find_irq(hw->eint, desc->eint.eint_n);  in mtk_gpio_to_irq()
492 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];  in mtk_gpio_set_config()
494 	if (!hw->eint ||  in mtk_gpio_set_config()
496 	    desc->eint.eint_n == (u16)EINT_NA)  in mtk_gpio_set_config()
497 		return -ENOTSUPP;  in mtk_gpio_set_config()
501 	return mtk_eint_set_debounce(hw->eint, desc->eint.eint_n, debounce);  in mtk_gpio_set_config()
506 	struct gpio_chip *chip = &hw->chip;  in mtk_build_gpiochip()
509 	chip->label		= PINCTRL_PINCTRL_DEV;  in mtk_build_gpiochip()
510 	chip->parent		= hw->dev;  in mtk_build_gpiochip()
511 	chip->request		= gpiochip_generic_request;  in mtk_build_gpiochip()
512 	chip->free		= gpiochip_generic_free;  in mtk_build_gpiochip()
513 	chip->direction_input	= mtk_gpio_direction_input;  in mtk_build_gpiochip()
514 	chip->direction_output	= mtk_gpio_direction_output;  in mtk_build_gpiochip()
515 	chip->get		= mtk_gpio_get;  in mtk_build_gpiochip()
516 	chip->set		= mtk_gpio_set;  in mtk_build_gpiochip()
517 	chip->to_irq		= mtk_gpio_to_irq,  in mtk_build_gpiochip()
518 	chip->set_config	= mtk_gpio_set_config,  in mtk_build_gpiochip()
519 	chip->base		= -1;  in mtk_build_gpiochip()
520 	chip->ngpio		= hw->soc->npins;  in mtk_build_gpiochip()
521 	chip->of_node		= np;  in mtk_build_gpiochip()
522 	chip->of_gpio_n_cells	= 2;  in mtk_build_gpiochip()
529 	 * "gpio-ranges" property. Otherwise, called directly from a  in mtk_build_gpiochip()
530 	 * DeviceTree-supported pinctrl driver is DEPRECATED.  in mtk_build_gpiochip()
533 	 * bind pinctrl and gpio drivers via the "gpio-ranges" property.  in mtk_build_gpiochip()
535 	if (!of_find_property(np, "gpio-ranges", NULL)) {  in mtk_build_gpiochip()
536 		ret = gpiochip_add_pin_range(chip, dev_name(hw->dev), 0, 0,  in mtk_build_gpiochip()
537 					     chip->ngpio);  in mtk_build_gpiochip()
551 	for (i = 0; i < hw->soc->ngrps; i++) {  in mtk_build_groups()
552 		const struct group_desc *group = hw->soc->grps + i;  in mtk_build_groups()
554 		err = pinctrl_generic_add_group(hw->pctrl, group->name,  in mtk_build_groups()
555 						group->pins, group->num_pins,  in mtk_build_groups()
556 						group->data);  in mtk_build_groups()
558 			dev_err(hw->dev, "Failed to register group %s\n",  in mtk_build_groups()
559 				group->name);  in mtk_build_groups()
571 	for (i = 0; i < hw->soc->nfuncs ; i++) {  in mtk_build_functions()
572 		const struct function_desc *func = hw->soc->funcs + i;  in mtk_build_functions()
574 		err = pinmux_generic_add_function(hw->pctrl, func->name,  in mtk_build_functions()
575 						  func->group_names,  in mtk_build_functions()
576 						  func->num_group_names,  in mtk_build_functions()
577 						  func->data);  in mtk_build_functions()
579 			dev_err(hw->dev, "Failed to register function %s\n",  in mtk_build_functions()
580 				func->name);  in mtk_build_functions()
589 			    const struct mtk_pin_soc *soc)  in mtk_moore_pinctrl_probe()  argument
595 	hw = devm_kzalloc(&pdev->dev, sizeof(*hw), GFP_KERNEL);  in mtk_moore_pinctrl_probe()
597 		return -ENOMEM;  in mtk_moore_pinctrl_probe()
599 	hw->soc = soc;  in mtk_moore_pinctrl_probe()
600 	hw->dev = &pdev->dev;  in mtk_moore_pinctrl_probe()
602 	if (!hw->soc->nbase_names) {  in mtk_moore_pinctrl_probe()
603 		dev_err(&pdev->dev,  in mtk_moore_pinctrl_probe()
604 			"SoC should be assigned at least one register base\n");  in mtk_moore_pinctrl_probe()
605 		return -EINVAL;  in mtk_moore_pinctrl_probe()
608 	hw->base = devm_kmalloc_array(&pdev->dev, hw->soc->nbase_names,  in mtk_moore_pinctrl_probe()
609 				      sizeof(*hw->base), GFP_KERNEL);  in mtk_moore_pinctrl_probe()
610 	if (!hw->base)  in mtk_moore_pinctrl_probe()
611 		return -ENOMEM;  in mtk_moore_pinctrl_probe()
613 	for (i = 0; i < hw->soc->nbase_names; i++) {  in mtk_moore_pinctrl_probe()
614 		hw->base[i] = devm_platform_ioremap_resource_byname(pdev,  in mtk_moore_pinctrl_probe()
615 						hw->soc->base_names[i]);  in mtk_moore_pinctrl_probe()
616 		if (IS_ERR(hw->base[i]))  in mtk_moore_pinctrl_probe()
617 			return PTR_ERR(hw->base[i]);  in mtk_moore_pinctrl_probe()
620 	hw->nbase = hw->soc->nbase_names;  in mtk_moore_pinctrl_probe()
623 	pins = devm_kmalloc_array(&pdev->dev, hw->soc->npins, sizeof(*pins),  in mtk_moore_pinctrl_probe()
626 		return -ENOMEM;  in mtk_moore_pinctrl_probe()
628 	for (i = 0; i < hw->soc->npins; i++) {  in mtk_moore_pinctrl_probe()
629 		pins[i].number = hw->soc->pins[i].number;  in mtk_moore_pinctrl_probe()
630 		pins[i].name = hw->soc->pins[i].name;  in mtk_moore_pinctrl_probe()
633 	/* Setup pins descriptions per SoC types */  in mtk_moore_pinctrl_probe()
635 	mtk_desc.npins = hw->soc->npins;  in mtk_moore_pinctrl_probe()
642 	err = devm_pinctrl_register_and_init(&pdev->dev, &mtk_desc, hw,  in mtk_moore_pinctrl_probe()
643 					     &hw->pctrl);  in mtk_moore_pinctrl_probe()
647 	/* Setup groups descriptions per SoC types */  in mtk_moore_pinctrl_probe()
650 		dev_err(&pdev->dev, "Failed to build groups\n");  in mtk_moore_pinctrl_probe()
654 	/* Setup functions descriptions per SoC types */  in mtk_moore_pinctrl_probe()
657 		dev_err(&pdev->dev, "Failed to build functions\n");  in mtk_moore_pinctrl_probe()
664 	err = pinctrl_enable(hw->pctrl);  in mtk_moore_pinctrl_probe()
670 		dev_warn(&pdev->dev,  in mtk_moore_pinctrl_probe()
674 	err = mtk_build_gpiochip(hw, pdev->dev.of_node);  in mtk_moore_pinctrl_probe()
676 		dev_err(&pdev->dev, "Failed to add gpio_chip\n");  in mtk_moore_pinctrl_probe()