3  * GPIO based MDIO bitbang driver.
24 #include <linux/platform_data/mdio-gpio.h>
25 #include <linux/mdio-bitbang.h>
26 #include <linux/mdio-gpio.h>
32 	struct gpio_desc *mdc, *mdio, *mdo;  member
43 	bitbang->mdio = devm_gpiod_get_index(dev, NULL, MDIO_GPIO_MDIO,  in mdio_gpio_get_data()
45 	if (IS_ERR(bitbang->mdio))  in mdio_gpio_get_data()
46 		return PTR_ERR(bitbang->mdio);  in mdio_gpio_get_data()
69 		gpiod_direction_output(bitbang->mdio, 1);  in mdio_dir()
71 		gpiod_direction_input(bitbang->mdio);  in mdio_dir()
79 	return gpiod_get_value_cansleep(bitbang->mdio);  in mdio_get()
90 		gpiod_set_value_cansleep(bitbang->mdio, what);  in mdio_set()
122 	new_bus->name = "GPIO Bitbanged MDIO";  in mdio_gpio_bus_init()
170 		bus_id = of_alias_get_id(pdev->dev.of_node, "mdio-gpio");  in mdio_gpio_probe()
198 	{ .compatible = "virtual,mdio-gpio", },
207 		.name	= "mdio-gpio",
214 MODULE_ALIAS("platform:mdio-gpio");
217 MODULE_DESCRIPTION("Generic driver for MDIO bus emulation using GPIO");