1 // SPDX-License-Identifier: GPL-2.0
16 #include <linux/pinctrl/pinconf-generic.h>
20 #include "pinctrl-intel.h"
57  * struct mrfld_family - Intel pin family description
76 		.npins = (e) - (s) + 1,			\
83 		.npins = (e) - (s) + 1,			\
173 	/* Family 6: GP SSP (22 pins) */
386 	FUNCTION("pwm2", mrfld_pwm2_groups),
409  * struct mrfld_pinctrl - Intel Merrifield pinctrl private structure
440 #define pin_to_bufno(f, p)		((p) - (f)->pin_base)
448 	for (i = 0; i < mp->nfamilies; i++) {  in mrfld_get_family()
449 		family = &mp->families[i];  in mrfld_get_family()
450 		if (pin >= family->pin_base &&  in mrfld_get_family()
451 		    pin < family->pin_base + family->npins)  in mrfld_get_family()
455 	dev_warn(mp->dev, "failed to find family for pin %u\n", pin);  in mrfld_get_family()
467 	return !family->protected;  in mrfld_buf_available()
480 	return family->regs + BUFCFG_OFFSET + bufno * 4;  in mrfld_get_bufcfg()
488 		return -EBUSY;  in mrfld_read_bufcfg()
515 	return mp->ngroups;  in mrfld_get_groups_count()
523 	return mp->groups[group].grp.name;  in mrfld_get_group_name()
531 	*pins = mp->groups[group].grp.pins;  in mrfld_get_group_pins()
532 	*npins = mp->groups[group].grp.npins;  in mrfld_get_group_pins()
569 	return mp->nfunctions;  in mrfld_get_functions_count()
577 	return mp->functions[function].name;  in mrfld_get_function_name()
587 	*groups = mp->functions[function].groups;  in mrfld_get_function_groups()
588 	*ngroups = mp->functions[function].ngroups;  in mrfld_get_function_groups()
597 	const struct intel_pingroup *grp = &mp->groups[group];  in mrfld_pinmux_set_mux()
598 	u32 bits = grp->mode << BUFCFG_PINMODE_SHIFT;  in mrfld_pinmux_set_mux()
607 	for (i = 0; i < grp->grp.npins; i++) {  in mrfld_pinmux_set_mux()
608 		if (!mrfld_buf_available(mp, grp->grp.pins[i]))  in mrfld_pinmux_set_mux()
609 			return -EBUSY;  in mrfld_pinmux_set_mux()
613 	raw_spin_lock_irqsave(&mp->lock, flags);  in mrfld_pinmux_set_mux()
614 	for (i = 0; i < grp->grp.npins; i++)  in mrfld_pinmux_set_mux()
615 		mrfld_update_bufcfg(mp, grp->grp.pins[i], bits, mask);  in mrfld_pinmux_set_mux()
616 	raw_spin_unlock_irqrestore(&mp->lock, flags);  in mrfld_pinmux_set_mux()
631 		return -EBUSY;  in mrfld_gpio_request_enable()
633 	raw_spin_lock_irqsave(&mp->lock, flags);  in mrfld_gpio_request_enable()
635 	raw_spin_unlock_irqrestore(&mp->lock, flags);  in mrfld_gpio_request_enable()
659 		return -ENOTSUPP;  in mrfld_config_get()
666 			return -EINVAL;  in mrfld_config_get()
671 			return -EINVAL;  in mrfld_config_get()
692 			return -EINVAL;  in mrfld_config_get()
713 			return -EINVAL;  in mrfld_config_get()
724 		return -ENOTSUPP;  in mrfld_config_get()
763 			return -EINVAL;  in mrfld_config_set_pin()
787 			return -EINVAL;  in mrfld_config_set_pin()
805 	raw_spin_lock_irqsave(&mp->lock, flags);  in mrfld_config_set_pin()
807 	raw_spin_unlock_irqrestore(&mp->lock, flags);  in mrfld_config_set_pin()
820 		return -ENOTSUPP;  in mrfld_config_set()
835 			return -ENOTSUPP;  in mrfld_config_set()
904 	mp = devm_kzalloc(&pdev->dev, sizeof(*mp), GFP_KERNEL);  in mrfld_pinctrl_probe()
906 		return -ENOMEM;  in mrfld_pinctrl_probe()
908 	mp->dev = &pdev->dev;  in mrfld_pinctrl_probe()
909 	raw_spin_lock_init(&mp->lock);  in mrfld_pinctrl_probe()
920 	families = devm_kmemdup(&pdev->dev, mrfld_families,  in mrfld_pinctrl_probe()
924 		return -ENOMEM;  in mrfld_pinctrl_probe()
930 		family->regs = regs + family->barno * MRFLD_FAMILY_LEN;  in mrfld_pinctrl_probe()
933 	mp->families = families;  in mrfld_pinctrl_probe()
934 	mp->nfamilies = nfamilies;  in mrfld_pinctrl_probe()
935 	mp->functions = mrfld_functions;  in mrfld_pinctrl_probe()
936 	mp->nfunctions = ARRAY_SIZE(mrfld_functions);  in mrfld_pinctrl_probe()
937 	mp->groups = mrfld_groups;  in mrfld_pinctrl_probe()
938 	mp->ngroups = ARRAY_SIZE(mrfld_groups);  in mrfld_pinctrl_probe()
939 	mp->pctldesc = mrfld_pinctrl_desc;  in mrfld_pinctrl_probe()
940 	mp->pctldesc.name = dev_name(&pdev->dev);  in mrfld_pinctrl_probe()
941 	mp->pctldesc.pins = mrfld_pins;  in mrfld_pinctrl_probe()
942 	mp->pctldesc.npins = ARRAY_SIZE(mrfld_pins);  in mrfld_pinctrl_probe()
944 	mp->pctldev = devm_pinctrl_register(&pdev->dev, &mp->pctldesc, mp);  in mrfld_pinctrl_probe()
945 	if (IS_ERR(mp->pctldev)) {  in mrfld_pinctrl_probe()
946 		dev_err(&pdev->dev, "failed to register pinctrl driver\n");  in mrfld_pinctrl_probe()
947 		return PTR_ERR(mp->pctldev);  in mrfld_pinctrl_probe()
963 		.name = "pinctrl-merrifield",
983 MODULE_ALIAS("platform:pinctrl-merrifield");