1 // SPDX-License-Identifier: GPL-2.0
13 #include <linux/pinctrl/pinconf-generic.h>
19 #include "../pinctrl-utils.h"
22 #include "pinctrl-k1.h"
25  * +---------+----------+-----------+--------+--------+----------+--------+
27  * | up/down | strength |  trigger  |  rate  | detect |   pull   |  mode  |
28  * +---------+----------+-----------+--------+--------+----------+--------+
128 	return pctrl->regs + spacemit_pin_to_offset(pin);  in spacemit_pin_to_reg()
144 	const struct spacemit_pin *pdata = pctrl->data->data;  in spacemit_get_pin()
147 	for (i = 0; i < pctrl->data->npins; i++) {  in spacemit_get_pin()
158 	return K1_PIN_GET_IO_TYPE(pin->flags);  in spacemit_to_pin_io_type()
173 	const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);  in spacemit_pctrl_dbg_show()  local
174 	enum spacemit_pin_io_type type = spacemit_to_pin_io_type(spin);  in spacemit_pctrl_dbg_show()
214 	return tbl[num - 1].val;  in spacemit_get_ds_value()
269 	struct device *dev = pctrl->dev;  in spacemit_pctrl_check_power()
273 	of_property_read_u32(dn, "power-source", &power);  in spacemit_pctrl_check_power()
288 			return -ENOTSUPP;  in spacemit_pctrl_check_power()
301 	struct device *dev = pctrl->dev;  in spacemit_pctrl_dt_node_to_map()
315 		return -ENOMEM;  in spacemit_pctrl_dt_node_to_map()
319 		return -ENOMEM;  in spacemit_pctrl_dt_node_to_map()
322 	guard(mutex)(&pctrl->mutex);  in spacemit_pctrl_dt_node_to_map()
333 			return -EINVAL;  in spacemit_pctrl_dt_node_to_map()
339 			return -ENOMEM;  in spacemit_pctrl_dt_node_to_map()
345 			return -ENOMEM;  in spacemit_pctrl_dt_node_to_map()
349 			return -ENOMEM;  in spacemit_pctrl_dt_node_to_map()
356 				return -EINVAL;  in spacemit_pctrl_dt_node_to_map()
363 				return dev_err_probe(dev, -ENODEV, "failed to get pin %d\n", pins[i]);  in spacemit_pctrl_dt_node_to_map()
372 		map[nmaps].data.mux.function = np->name;  in spacemit_pctrl_dt_node_to_map()
396 	ret = pinmux_generic_add_function(pctldev, np->name,  in spacemit_pctrl_dt_node_to_map()
400 		return dev_err_probe(dev, ret, "error adding function %s\n", np->name);  in spacemit_pctrl_dt_node_to_map()
429 		return -EINVAL;  in spacemit_pmx_set_mux()
431 	configs = group->data;  in spacemit_pmx_set_mux()
433 	for (i = 0; i < group->grp.npins; i++) {  in spacemit_pmx_set_mux()
434 		const struct spacemit_pin *spin = configs[i].pin;  in spacemit_pmx_set_mux()  local
437 		reg = spacemit_pin_to_reg(pctrl, spin->pin);  in spacemit_pmx_set_mux()
440 		guard(raw_spinlock_irqsave)(&pctrl->lock);  in spacemit_pmx_set_mux()
453 	const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);  in spacemit_request_gpio()  local
457 	guard(raw_spinlock_irqsave)(&pctrl->lock);  in spacemit_request_gpio()
458 	writel_relaxed(spin->gpiofunc, reg);  in spacemit_request_gpio()
480 		return -EINVAL;  in spacemit_pinconf_get()
492 		return -EINVAL;  in spacemit_pinconf_get()
502 static int spacemit_pinconf_generate_config(const struct spacemit_pin *spin,  in spacemit_pinconf_generate_config()  argument
512 	if (!spin)  in spacemit_pinconf_generate_config()
513 		return -EINVAL;  in spacemit_pinconf_generate_config()
556 			return -EINVAL;  in spacemit_pinconf_generate_config()
561 		type = spacemit_to_pin_io_type(spin);  in spacemit_pinconf_generate_config()
573 				return -EINVAL;  in spacemit_pinconf_generate_config()
589 				return -EINVAL;  in spacemit_pinconf_generate_config()
593 			slew_rate = slew_rate > 1 ? (slew_rate - 2) : 0;  in spacemit_pinconf_generate_config()
606 	const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);  in spacemit_pin_set_config()  local
611 		return -EINVAL;  in spacemit_pin_set_config()
613 	reg = spacemit_pin_to_reg(pctrl, spin->pin);  in spacemit_pin_set_config()
615 	guard(raw_spinlock_irqsave)(&pctrl->lock);  in spacemit_pin_set_config()
627 	const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);  in spacemit_pinconf_set()  local
630 	if (spacemit_pinconf_generate_config(spin, configs, num_configs, &value))  in spacemit_pinconf_set()
631 		return -EINVAL;  in spacemit_pinconf_set()
642 	const struct spacemit_pin *spin;  in spacemit_pinconf_group_set()  local
649 		return -EINVAL;  in spacemit_pinconf_group_set()
651 	spin = spacemit_get_pin(pctrl, group->grp.pins[0]);  in spacemit_pinconf_group_set()
652 	if (spacemit_pinconf_generate_config(spin, configs, num_configs, &value))  in spacemit_pinconf_group_set()
653 		return -EINVAL;  in spacemit_pinconf_group_set()
655 	for (i = 0; i < group->grp.npins; i++)  in spacemit_pinconf_group_set()
656 		spacemit_pin_set_config(pctrl, group->grp.pins[i], value);  in spacemit_pinconf_group_set()
677 		seq_puts(seq, ", bias strong pull up");  in spacemit_pinconf_dbg_pull()
679 		seq_puts(seq, ", bias normal pull up");  in spacemit_pinconf_dbg_pull()
686 	const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);  in spacemit_pinconf_dbg_show()  local
687 	enum spacemit_pin_io_type type = spacemit_to_pin_io_type(spin);  in spacemit_pinconf_dbg_show()
721 	struct device *dev = &pdev->dev;  in spacemit_pinctrl_probe()
728 		return -ENODEV;  in spacemit_pinctrl_probe()
730 	if (pctrl_data->npins == 0)  in spacemit_pinctrl_probe()
731 		return dev_err_probe(dev, -EINVAL, "invalid pin data\n");  in spacemit_pinctrl_probe()
735 		return -ENOMEM;  in spacemit_pinctrl_probe()
737 	pctrl->regs = devm_platform_ioremap_resource(pdev, 0);  in spacemit_pinctrl_probe()
738 	if (IS_ERR(pctrl->regs))  in spacemit_pinctrl_probe()
739 		return PTR_ERR(pctrl->regs);  in spacemit_pinctrl_probe()
741 	pctrl->pdesc.name = dev_name(dev);  in spacemit_pinctrl_probe()
742 	pctrl->pdesc.pins = pctrl_data->pins;  in spacemit_pinctrl_probe()
743 	pctrl->pdesc.npins = pctrl_data->npins;  in spacemit_pinctrl_probe()
744 	pctrl->pdesc.pctlops = &spacemit_pctrl_ops;  in spacemit_pinctrl_probe()
745 	pctrl->pdesc.pmxops = &spacemit_pmx_ops;  in spacemit_pinctrl_probe()
746 	pctrl->pdesc.confops = &spacemit_pinconf_ops;  in spacemit_pinctrl_probe()
747 	pctrl->pdesc.owner = THIS_MODULE;  in spacemit_pinctrl_probe()
749 	pctrl->data = pctrl_data;  in spacemit_pinctrl_probe()
750 	pctrl->dev = dev;  in spacemit_pinctrl_probe()
751 	raw_spin_lock_init(&pctrl->lock);  in spacemit_pinctrl_probe()
752 	mutex_init(&pctrl->mutex);  in spacemit_pinctrl_probe()
756 	ret = devm_pinctrl_register_and_init(dev, &pctrl->pdesc,  in spacemit_pinctrl_probe()
757 					     pctrl, &pctrl->pctl_dev);  in spacemit_pinctrl_probe()
762 	return pinctrl_enable(pctrl->pctl_dev);  in spacemit_pinctrl_probe()
1034 	{ .compatible = "spacemit,k1-pinctrl", .data = &k1_pinctrl_data },
1042 		.name			= "k1-pinctrl",