1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * GPIO driver for LPC32xx SoC
14 #include <linux/gpio/driver.h>
81  * GPIO names
170 	return __raw_readl(group->reg_base + offset);  in gpreg_read()
175 	__raw_writel(val, group->reg_base + offset);  in gpreg_write()
183 			group->gpio_grp->dir_clr);  in __set_gpio_dir_p012()
186 			group->gpio_grp->dir_set);  in __set_gpio_dir_p012()
195 		gpreg_write(group, u, group->gpio_grp->dir_clr);  in __set_gpio_dir_p3()
197 		gpreg_write(group, u, group->gpio_grp->dir_set);  in __set_gpio_dir_p3()
205 			group->gpio_grp->outp_set);  in __set_gpio_level_p012()
208 			group->gpio_grp->outp_clr);  in __set_gpio_level_p012()
217 		gpreg_write(group, u, group->gpio_grp->outp_set);  in __set_gpio_level_p3()
219 		gpreg_write(group, u, group->gpio_grp->outp_clr);  in __set_gpio_level_p3()
226 		gpreg_write(group, GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_set);  in __set_gpo_level_p3()
228 		gpreg_write(group, GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_clr);  in __set_gpo_level_p3()
234 	return GPIO012_PIN_IN_SEL(gpreg_read(group, group->gpio_grp->inp_state),  in __get_gpio_state_p012()
241 	int state = gpreg_read(group, group->gpio_grp->inp_state);  in __get_gpio_state_p3()
244 	 * P3 GPIO pin input mapping is not contiguous, GPIOP3-0..4 is mapped  in __get_gpio_state_p3()
245 	 * to bits 10..14, while GPIOP3-5 is mapped to bit 24.  in __get_gpio_state_p3()
253 	return GPI3_PIN_IN_SEL(gpreg_read(group, group->gpio_grp->inp_state), pin);  in __get_gpi_state_p3()
259 	return GPO3_PIN_IN_SEL(gpreg_read(group, group->gpio_grp->outp_state), pin);  in __get_gpo_state_p3()
263  * GPIO primitives.
376 	if (pin < chip->ngpio)  in lpc32xx_gpio_request()
379 	return -EINVAL;  in lpc32xx_gpio_request()
384 	return -ENXIO;  in lpc32xx_gpio_to_irq_p01()
389 	return -ENXIO;  in lpc32xx_gpio_to_irq_gpio_p3()
394 	return -ENXIO;  in lpc32xx_gpio_to_irq_gpi_p3()
495 	u32 bank = gpiospec->args[0];  in lpc32xx_of_xlate()
498 		return -EINVAL;  in lpc32xx_of_xlate()
501 		*flags = gpiospec->args[2];  in lpc32xx_of_xlate()
502 	return gpiospec->args[1];  in lpc32xx_of_xlate()
515 		lpc32xx_gpiochip[i].chip.parent = &pdev->dev;  in lpc32xx_gpio_probe()
516 		if (pdev->dev.of_node) {  in lpc32xx_gpio_probe()
521 		devm_gpiochip_add_data(&pdev->dev, &lpc32xx_gpiochip[i].chip,  in lpc32xx_gpio_probe()
529 	{ .compatible = "nxp,lpc3220-gpio", },
536 		.name	= "lpc32xx-gpio",
546 MODULE_DESCRIPTION("GPIO driver for LPC32xx SoC");