1 // SPDX-License-Identifier: GPL-2.0
5  * Based on drivers/pinctrl/mvebu/pinctrl-mvebu.c and
6  *          drivers/gpio/bcm2835_gpio.c
8  * This driver gets instantiated by the GPIO driver, because both devices
14 #include <config.h>
19 #include <dm/device-internal.h>
23 #include <asm/gpio.h>
31 static void bcm2835_gpio_set_func_id(struct udevice *dev, unsigned int gpio,  in bcm2835_gpio_set_func_id()  argument
38 	reg_offset = BCM2835_GPIO_FSEL_BANK(gpio);  in bcm2835_gpio_set_func_id()
39 	field_offset = BCM2835_GPIO_FSEL_SHIFT(gpio);  in bcm2835_gpio_set_func_id()
41 	clrsetbits_le32(&priv->base_reg[reg_offset],  in bcm2835_gpio_set_func_id()
46 static int bcm2835_gpio_get_func_id(struct udevice *dev, unsigned int gpio)  in bcm2835_gpio_get_func_id()  argument
51 	val = readl(&priv->base_reg[BCM2835_GPIO_FSEL_BANK(gpio)]);  in bcm2835_gpio_get_func_id()
53 	return (val >> BCM2835_GPIO_FSEL_SHIFT(gpio) & BCM2835_GPIO_FSEL_MASK);  in bcm2835_gpio_get_func_id()
59  * @config: the state to be configured.
62 int bcm283x_pinctrl_set_state(struct udevice *dev, struct udevice *config)  in bcm283x_pinctrl_set_state()  argument
68 	if (!dev_read_prop(config, "brcm,pins", &len) || !len ||  in bcm283x_pinctrl_set_state()
69 	    len & 0x3 || dev_read_u32_array(config, "brcm,pins", pin_arr,  in bcm283x_pinctrl_set_state()
72 		      config->name, len);  in bcm283x_pinctrl_set_state()
73 		return -EINVAL;  in bcm283x_pinctrl_set_state()
78 	function = dev_read_u32_default(config, "brcm,function", -1);  in bcm283x_pinctrl_set_state()
81 		      config->name, function);  in bcm283x_pinctrl_set_state()
82 		return -EINVAL;  in bcm283x_pinctrl_set_state()
95 		return -EINVAL;  in bcm283x_pinctrl_get_gpio_mux()
101 	{.compatible = "brcm,bcm2835-gpio"},
114 		return -EINVAL;  in bcm283x_pinctl_probe()
117 	priv->base_reg = dev_read_addr_ptr(dev);  in bcm283x_pinctl_probe()
118 	if (priv->base_reg == (void *)FDT_ADDR_T_NONE) {  in bcm283x_pinctl_probe()
120 		return -EINVAL;  in bcm283x_pinctl_probe()
123 	/* Create GPIO device as well */  in bcm283x_pinctl_probe()
129 		 * devices go where they should go, the GPIO controller is  in bcm283x_pinctl_probe()
133 		printf("Failed to bind GPIO driver\n");  in bcm283x_pinctl_probe()