1 // SPDX-License-Identifier: GPL-2.0-only
3  * MAX77620 pin control driver.
16 #include <linux/pinctrl/pinconf-generic.h>
24 #include "pinctrl-utils.h"
50 		.property = "maxim,active-fps-source",
53 		.property = "maxim,active-fps-power-up-slot",
56 		.property = "maxim,active-fps-power-down-slot",
59 		.property = "maxim,suspend-fps-source",
62 		.property = "maxim,suspend-fps-power-up-slot",
65 		.property = "maxim,suspend-fps-power-down-slot",
148 	FUNCTION_GROUP("lpm-control-in", LOW_POWER_MODE_CONTROL_IN),
149 	FUNCTION_GROUP("fps-out", FLEXIBLE_POWER_SEQUENCER_OUT),
150 	FUNCTION_GROUP("32k-out1", 32K_OUT1),
151 	FUNCTION_GROUP("sd0-dvs-in", SD0_DYNAMIC_VOLTAGE_SCALING_IN),
152 	FUNCTION_GROUP("sd1-dvs-in", SD1_DYNAMIC_VOLTAGE_SCALING_IN),
153 	FUNCTION_GROUP("reference-out", REFERENCE_OUT),
179 	return mpci->num_pin_groups;  in max77620_pinctrl_get_groups_count()
187 	return mpci->pin_groups[group].name;  in max77620_pinctrl_get_group_name()
196 	*pins = mpci->pin_groups[group].pins;  in max77620_pinctrl_get_group_pins()
197 	*num_pins = mpci->pin_groups[group].npins;  in max77620_pinctrl_get_group_pins()
214 	return mpci->num_functions;  in max77620_pinctrl_get_funcs_count()
222 	return mpci->functions[function].name;  in max77620_pinctrl_get_func_name()
232 	*groups = mpci->functions[function].groups;  in max77620_pinctrl_get_func_groups()
233 	*num_groups = mpci->functions[function].ngroups;  in max77620_pinctrl_get_func_groups()
242 	u8 val;  in max77620_pinctrl_enable()  local
246 		val = 0;  in max77620_pinctrl_enable()
247 	} else if (function == mpci->pin_groups[group].alt_option) {  in max77620_pinctrl_enable()
248 		val = 1 << group;  in max77620_pinctrl_enable()
250 		dev_err(mpci->dev, "GPIO %u doesn't have function %u\n",  in max77620_pinctrl_enable()
252 		return -EINVAL;  in max77620_pinctrl_enable()
254 	ret = regmap_update_bits(mpci->rmap, MAX77620_REG_AME_GPIO,  in max77620_pinctrl_enable()
255 				 BIT(group), val);  in max77620_pinctrl_enable()
257 		dev_err(mpci->dev, "REG AME GPIO update failed: %d\n", ret);  in max77620_pinctrl_enable()
270 				unsigned int pin, unsigned long *config)  in max77620_pinconf_get()  argument
273 	struct device *dev = mpci->dev;  in max77620_pinconf_get()
275 	unsigned int val;  in max77620_pinconf_get()  local
281 		if (mpci->pin_info[pin].drv_type == MAX77620_PIN_OD_DRV)  in max77620_pinconf_get()
286 		if (mpci->pin_info[pin].drv_type == MAX77620_PIN_PP_DRV)  in max77620_pinconf_get()
291 		ret = regmap_read(mpci->rmap, MAX77620_REG_PUE_GPIO, &val);  in max77620_pinconf_get()
296 		if (val & BIT(pin))  in max77620_pinconf_get()
301 		ret = regmap_read(mpci->rmap, MAX77620_REG_PDE_GPIO, &val);  in max77620_pinconf_get()
306 		if (val & BIT(pin))  in max77620_pinconf_get()
312 		return -ENOTSUPP;  in max77620_pinconf_get()
323 	unsigned int val;  in max77620_get_default_fps()  local
326 	ret = regmap_read(mpci->rmap, addr, &val);  in max77620_get_default_fps()
328 		dev_err(mpci->dev, "Reg PUE_GPIO read failed: %d\n", ret);  in max77620_get_default_fps()
331 	*fps = (val & MAX77620_FPS_SRC_MASK) >> MAX77620_FPS_SRC_SHIFT;  in max77620_get_default_fps()
337 				  int pin, int param)  in max77620_set_fps_param()  argument
339 	struct max77620_fps_config *fps_config = &mpci->fps_config[pin];  in max77620_set_fps_param()
344 	if ((pin < MAX77620_GPIO1) || (pin > MAX77620_GPIO3))  in max77620_set_fps_param()
347 	addr = MAX77620_REG_FPS_GPIO1 + pin - 1;  in max77620_set_fps_param()
353 		param_val = fps_config->active_fps_src;  in max77620_set_fps_param()
355 			param_val = fps_config->suspend_fps_src;  in max77620_set_fps_param()
362 		param_val = fps_config->active_power_up_slots;  in max77620_set_fps_param()
364 			param_val = fps_config->suspend_power_up_slots;  in max77620_set_fps_param()
371 		param_val = fps_config->active_power_down_slots;  in max77620_set_fps_param()
373 			param_val = fps_config->suspend_power_down_slots;  in max77620_set_fps_param()
377 		dev_err(mpci->dev, "Invalid parameter %d for pin %d\n",  in max77620_set_fps_param()
378 			param, pin);  in max77620_set_fps_param()
379 		return -EINVAL;  in max77620_set_fps_param()
385 	ret = regmap_update_bits(mpci->rmap, addr, mask, param_val << shift);  in max77620_set_fps_param()
387 		dev_err(mpci->dev, "Reg 0x%02x update failed %d\n", addr, ret);  in max77620_set_fps_param()
393 				unsigned int pin, unsigned long *configs,  in max77620_pinconf_set()  argument
397 	struct device *dev = mpci->dev;  in max77620_pinconf_set()
401 	unsigned int val;  in max77620_pinconf_set()  local
413 			val = param_val ? 0 : 1;  in max77620_pinconf_set()
414 			ret = regmap_update_bits(mpci->rmap,  in max77620_pinconf_set()
415 						 MAX77620_REG_GPIO0 + pin,  in max77620_pinconf_set()
417 						 val);  in max77620_pinconf_set()
421 			mpci->pin_info[pin].drv_type = val ?  in max77620_pinconf_set()
426 			val = param_val ? 1 : 0;  in max77620_pinconf_set()
427 			ret = regmap_update_bits(mpci->rmap,  in max77620_pinconf_set()
428 						 MAX77620_REG_GPIO0 + pin,  in max77620_pinconf_set()
430 						 val);  in max77620_pinconf_set()
434 			mpci->pin_info[pin].drv_type = val ?  in max77620_pinconf_set()
441 			if ((pin < MAX77620_GPIO1) || (pin > MAX77620_GPIO3))  in max77620_pinconf_set()
442 				return -EINVAL;  in max77620_pinconf_set()
444 			fps_config = &mpci->fps_config[pin];  in max77620_pinconf_set()
448 				addr = MAX77620_REG_FPS_GPIO1 + pin - 1;  in max77620_pinconf_set()
451 						&fps_config->active_fps_src);  in max77620_pinconf_set()
458 				fps_config->active_fps_src = param_val;  in max77620_pinconf_set()
460 				fps_config->active_power_up_slots = param_val;  in max77620_pinconf_set()
462 				fps_config->active_power_down_slots = param_val;  in max77620_pinconf_set()
464 			ret = max77620_set_fps_param(mpci, pin, param);  in max77620_pinconf_set()
472 			if ((pin < MAX77620_GPIO1) || (pin > MAX77620_GPIO3))  in max77620_pinconf_set()
473 				return -EINVAL;  in max77620_pinconf_set()
475 			fps_config = &mpci->fps_config[pin];  in max77620_pinconf_set()
479 				addr = MAX77620_REG_FPS_GPIO1 + pin - 1;  in max77620_pinconf_set()
482 						&fps_config->suspend_fps_src);  in max77620_pinconf_set()
489 				fps_config->suspend_fps_src = param_val;  in max77620_pinconf_set()
491 				fps_config->suspend_power_up_slots = param_val;  in max77620_pinconf_set()
493 				fps_config->suspend_power_down_slots =  in max77620_pinconf_set()
500 							BIT(pin) : 0;  in max77620_pinconf_set()
502 							BIT(pin) : 0;  in max77620_pinconf_set()
504 			ret = regmap_update_bits(mpci->rmap,  in max77620_pinconf_set()
506 						 BIT(pin), pu_val);  in max77620_pinconf_set()
513 			ret = regmap_update_bits(mpci->rmap,  in max77620_pinconf_set()
515 						 BIT(pin), pd_val);  in max77620_pinconf_set()
525 			return -ENOTSUPP;  in max77620_pinconf_set()
533 		MAX77620_REG_GPIO0 + pin, ret);  in max77620_pinconf_set()
550 	struct max77620_chip *max77620 = dev_get_drvdata(pdev->dev.parent);  in max77620_pinctrl_probe()
554 	mpci = devm_kzalloc(&pdev->dev, sizeof(*mpci), GFP_KERNEL);  in max77620_pinctrl_probe()
556 		return -ENOMEM;  in max77620_pinctrl_probe()
558 	mpci->dev = &pdev->dev;  in max77620_pinctrl_probe()
559 	mpci->dev->of_node = pdev->dev.parent->of_node;  in max77620_pinctrl_probe()
560 	mpci->rmap = max77620->rmap;  in max77620_pinctrl_probe()
562 	mpci->pins = max77620_pins_desc;  in max77620_pinctrl_probe()
563 	mpci->num_pins = ARRAY_SIZE(max77620_pins_desc);  in max77620_pinctrl_probe()
564 	mpci->functions = max77620_pin_function;  in max77620_pinctrl_probe()
565 	mpci->num_functions = ARRAY_SIZE(max77620_pin_function);  in max77620_pinctrl_probe()
566 	mpci->pin_groups = max77620_pingroups;  in max77620_pinctrl_probe()
567 	mpci->num_pin_groups = ARRAY_SIZE(max77620_pingroups);  in max77620_pinctrl_probe()
570 	max77620_pinctrl_desc.name = dev_name(&pdev->dev);  in max77620_pinctrl_probe()
578 		mpci->fps_config[i].active_fps_src = -1;  in max77620_pinctrl_probe()
579 		mpci->fps_config[i].active_power_up_slots = -1;  in max77620_pinctrl_probe()
580 		mpci->fps_config[i].active_power_down_slots = -1;  in max77620_pinctrl_probe()
581 		mpci->fps_config[i].suspend_fps_src = -1;  in max77620_pinctrl_probe()
582 		mpci->fps_config[i].suspend_power_up_slots = -1;  in max77620_pinctrl_probe()
583 		mpci->fps_config[i].suspend_power_down_slots = -1;  in max77620_pinctrl_probe()
586 	mpci->pctl = devm_pinctrl_register(&pdev->dev, &max77620_pinctrl_desc,  in max77620_pinctrl_probe()
588 	if (IS_ERR(mpci->pctl)) {  in max77620_pinctrl_probe()
589 		dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");  in max77620_pinctrl_probe()
590 		return PTR_ERR(mpci->pctl);  in max77620_pinctrl_probe()
612 	int pin, p;  in max77620_pinctrl_suspend()  local
614 	for (pin = 0; pin < MAX77620_PIN_NUM; ++pin) {  in max77620_pinctrl_suspend()
615 		if ((pin < MAX77620_GPIO1) || (pin > MAX77620_GPIO3))  in max77620_pinctrl_suspend()
619 				mpci, pin, max77620_suspend_fps_param[p]);  in max77620_pinctrl_suspend()
628 	int pin, p;  in max77620_pinctrl_resume()  local
630 	for (pin = 0; pin < MAX77620_PIN_NUM; ++pin) {  in max77620_pinctrl_resume()
631 		if ((pin < MAX77620_GPIO1) || (pin > MAX77620_GPIO3))  in max77620_pinctrl_resume()
635 				mpci, pin, max77620_active_fps_param[p]);  in max77620_pinctrl_resume()
648 	{ .name = "max77620-pinctrl", },
649 	{ .name = "max20024-pinctrl", },
656 		.name = "max77620-pinctrl",
665 MODULE_DESCRIPTION("MAX77620/MAX20024 pin control driver");
668 MODULE_ALIAS("platform:max77620-pinctrl");