pinctrl/intel/pinctrl-intel.c

149 						  unsigned int pin)
154 		if (pin >= community->pin_base &&
155 		    pin < community->pin_base + community->npins)
159 	dev_warn(pctrl->dev, "failed to find community for pin %u\n", pin);
166 			     unsigned int pin)
171 		if (pin >= padgrp->base && pin < padgrp->base + padgrp->size)
179 				      unsigned int pin, unsigned int reg)
185 	community = intel_get_community(pctrl, pin);
189 	padno = pin_to_padno(community, pin);
198 static bool intel_pad_owned_by_host(const struct intel_pinctrl *pctrl, unsigned int pin)
205 	community = intel_get_community(pctrl, pin);
211 	padgrp = intel_community_get_padgroup(community, pin);
215 	gpp_offset = padgroup_offset(padgrp, pin);
223 static bool intel_pad_acpi_mode(const struct intel_pinctrl *pctrl, unsigned int pin)
230 	community = intel_get_community(pctrl, pin);
236 	padgrp = intel_community_get_padgroup(community, pin);
240 	gpp_offset = padgroup_offset(padgrp, pin);
265 static int intel_pad_locked(const struct intel_pinctrl *pctrl, unsigned int pin)
273 	community = intel_get_community(pctrl, pin);
279 	padgrp = intel_community_get_padgroup(community, pin);
283 	gpp_offset = padgroup_offset(padgrp, pin);
303 static bool intel_pad_is_unlocked(const struct intel_pinctrl *pctrl, unsigned int pin)
305 	return (intel_pad_locked(pctrl, pin) & PAD_LOCKED) == PAD_UNLOCKED;
308 static bool intel_pad_usable(const struct intel_pinctrl *pctrl, unsigned int pin)
310 	return intel_pad_owned_by_host(pctrl, pin) && intel_pad_is_unlocked(pctrl, pin);
341 			       unsigned int pin)
349 	if (!intel_pad_owned_by_host(pctrl, pin)) {
354 	cfg0 = readl(intel_get_padcfg(pctrl, pin, PADCFG0));
355 	cfg1 = readl(intel_get_padcfg(pctrl, pin, PADCFG1));
366 	padcfg = intel_get_padcfg(pctrl, pin, PADCFG2);
370 	locked = intel_pad_locked(pctrl, pin);
371 	acpi = intel_pad_acpi_mode(pctrl, pin);
443 	/* Now enable the mux setting for each pin in the group */
542 				     unsigned int pin)
547 	padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
551 	if (!intel_pad_owned_by_host(pctrl, pin))
554 	if (!intel_pad_is_unlocked(pctrl, pin))
558 	 * If pin is already configured in GPIO mode, we assume that
560 	 * potential glitches on the pin. Otherwise, for the pin in
573 				    unsigned int pin, bool input)
579 	padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
602 static int intel_config_get_pull(struct intel_pinctrl *pctrl, unsigned int pin,
608 	padcfg1 = intel_get_padcfg(pctrl, pin, PADCFG1);
646 		const struct intel_community *community = intel_get_community(pctrl, pin);
683 static int intel_config_get_high_impedance(struct intel_pinctrl *pctrl, unsigned int pin,
689 	padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
700 static int intel_config_get_debounce(struct intel_pinctrl *pctrl, unsigned int pin,
707 	padcfg2 = intel_get_padcfg(pctrl, pin, PADCFG2);
723 static int intel_config_get(struct pinctrl_dev *pctldev, unsigned int pin,
731 	if (!intel_pad_owned_by_host(pctrl, pin))
738 		ret = intel_config_get_pull(pctrl, pin, param, &arg);
744 		ret = intel_config_get_high_impedance(pctrl, pin, param, &arg);
750 		ret = intel_config_get_debounce(pctrl, pin, param, &arg);
763 static int intel_config_set_pull(struct intel_pinctrl *pctrl, unsigned int pin,
801 		const struct intel_community *community = intel_get_community(pctrl, pin);
835 	padcfg1 = intel_get_padcfg(pctrl, pin, PADCFG1);
847 static void intel_gpio_set_high_impedance(struct intel_pinctrl *pctrl, unsigned int pin)
852 	padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
862 				     unsigned int pin, unsigned int debounce)
876 	padcfg2 = intel_get_padcfg(pctrl, pin, PADCFG2);
880 	padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
904 static int intel_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
910 	if (!intel_pad_usable(pctrl, pin))
918 			ret = intel_config_set_pull(pctrl, pin, configs[i]);
924 			intel_gpio_set_high_impedance(pctrl, pin);
928 			ret = intel_config_set_debounce(pctrl, pin,
956  * intel_gpio_to_pin() - Translate from GPIO offset to pin number
963  * automatically translated to pinctrl pin number. This function can be
964  * used to find out the corresponding pinctrl pin.
966  * Return: a pin number and pointers to the community and pad group, which
967  * the pin belongs to, or negative error code if translation can't be done.
991  * intel_pin_to_gpio() - Translate from pin number to GPIO offset
993  * @pin: pin number
995  * Translate the pin number of pinctrl to GPIO offset
999 static int intel_pin_to_gpio(const struct intel_pinctrl *pctrl, int pin)
1004 	community = intel_get_community(pctrl, pin);
1008 	padgrp = intel_community_get_padgroup(community, pin);
1012 	return pin - padgrp->base + padgrp->gpio_base;
1020 	int pin;
1022 	pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
1023 	if (pin < 0)
1026 	reg = intel_get_padcfg(pctrl, pin, PADCFG0);
1043 	int pin;
1045 	pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
1046 	if (pin < 0)
1049 	reg = intel_get_padcfg(pctrl, pin, PADCFG0);
1070 	int pin;
1072 	pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
1073 	if (pin < 0)
1076 	reg = intel_get_padcfg(pctrl, pin, PADCFG0);
1127 	int pin;
1129 	pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), &community, &padgrp);
1130 	if (pin >= 0) {
1135 		gpp_offset = padgroup_offset(padgrp, pin);
1150 	int pin;
1152 	pin = intel_gpio_to_pin(pctrl, hwirq, &community, &padgrp);
1153 	if (pin >= 0) {
1159 		gpp_offset = padgroup_offset(padgrp, pin);
1200 	unsigned int pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
1204 	reg = intel_get_padcfg(pctrl, pin, PADCFG0);
1209 	 * If the pin is in ACPI mode it is still usable as a GPIO but it
1213 	if (intel_pad_acpi_mode(pctrl, pin)) {
1214 		dev_warn(pctrl->dev, "pin %u cannot be used as IRQ\n", pin);
1258 	unsigned int pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
1265 	dev_dbg(pctrl->dev, "%s wake for pin %u\n", str_enable_disable(on), pin);
1360 			dev_err(pctrl->dev, "failed to add GPIO pin range\n");
1748 static bool intel_pinctrl_should_save(struct intel_pinctrl *pctrl, unsigned int pin)
1750 	const struct pin_desc *pd = pin_desc_get(pctrl->pctldev, pin);
1753 	if (!pd || !intel_pad_usable(pctrl, pin))
1757 	 * Only restore the pin if it is actually in use by the kernel (or
1763 	    gpiochip_line_is_irq(&pctrl->chip, intel_pin_to_gpio(pctrl, pin)))
1771 	 * in the firmwares that don't restore the pin settings correctly
1780 	value = readl(intel_get_padcfg(pctrl, pin, PADCFG0));
1878 static void intel_restore_padcfg(struct intel_pinctrl *pctrl, unsigned int pin,
1886 	padcfg = intel_get_padcfg(pctrl, pin, reg);
1893 	dev_dbg(dev, "restored pin %u padcfg%u %#08x\n", pin, n, readl(padcfg));