net: mdio: Move MDIO drivers into a new subdirectory

Move all the MDIO drivers and multiplexers into drivers/net/mdio.  The
mdio core is however left in the phy directory, due to mutual
dependencies between the MDIO core and the PHY core.

Take this opportunity to sort the Kconfig based on the menuconfig
strings, and move the multiplexers to the end with a separating
comment.

v2:
Fix typo in commit message

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 217 deletions

diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
deleted file mode 100644
index 1b00235d7dc5..000000000000
--- a/drivers/net/phy/mdio-gpio.c
+++ /dev/null
@@ -1,217 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GPIO based MDIO bitbang driver.
- * Supports OpenFirmware.
- *
- * Copyright (c) 2008 CSE Semaphore Belgium.
- *  by Laurent Pinchart <laurentp@cse-semaphore.com>
- *
- * Copyright (C) 2008, Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
- *
- * Based on earlier work by
- *
- * Copyright (c) 2003 Intracom S.A.
- *  by Pantelis Antoniou <panto@intracom.gr>
- *
- * 2005 (c) MontaVista Software, Inc.
- * Vitaly Bordug <vbordug@ru.mvista.com>
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/mdio-gpio.h>
-#include <linux/mdio-bitbang.h>
-#include <linux/mdio-gpio.h>
-#include <linux/gpio/consumer.h>
-#include <linux/of_mdio.h>
-
-struct mdio_gpio_info {
-	struct mdiobb_ctrl ctrl;
-	struct gpio_desc *mdc, *mdio, *mdo;
-};
-
-static int mdio_gpio_get_data(struct device *dev,
-			      struct mdio_gpio_info *bitbang)
-{
-	bitbang->mdc = devm_gpiod_get_index(dev, NULL, MDIO_GPIO_MDC,
-					    GPIOD_OUT_LOW);
-	if (IS_ERR(bitbang->mdc))
-		return PTR_ERR(bitbang->mdc);
-
-	bitbang->mdio = devm_gpiod_get_index(dev, NULL, MDIO_GPIO_MDIO,
-					     GPIOD_IN);
-	if (IS_ERR(bitbang->mdio))
-		return PTR_ERR(bitbang->mdio);
-
-	bitbang->mdo = devm_gpiod_get_index_optional(dev, NULL, MDIO_GPIO_MDO,
-						     GPIOD_OUT_LOW);
-	return PTR_ERR_OR_ZERO(bitbang->mdo);
-}
-
-static void mdio_dir(struct mdiobb_ctrl *ctrl, int dir)
-{
-	struct mdio_gpio_info *bitbang =
-		container_of(ctrl, struct mdio_gpio_info, ctrl);
-
-	if (bitbang->mdo) {
-		/* Separate output pin. Always set its value to high
-		 * when changing direction. If direction is input,
-		 * assume the pin serves as pull-up. If direction is
-		 * output, the default value is high.
-		 */
-		gpiod_set_value_cansleep(bitbang->mdo, 1);
-		return;
-	}
-
-	if (dir)
-		gpiod_direction_output(bitbang->mdio, 1);
-	else
-		gpiod_direction_input(bitbang->mdio);
-}
-
-static int mdio_get(struct mdiobb_ctrl *ctrl)
-{
-	struct mdio_gpio_info *bitbang =
-		container_of(ctrl, struct mdio_gpio_info, ctrl);
-
-	return gpiod_get_value_cansleep(bitbang->mdio);
-}
-
-static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
-{
-	struct mdio_gpio_info *bitbang =
-		container_of(ctrl, struct mdio_gpio_info, ctrl);
-
-	if (bitbang->mdo)
-		gpiod_set_value_cansleep(bitbang->mdo, what);
-	else
-		gpiod_set_value_cansleep(bitbang->mdio, what);
-}
-
-static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
-{
-	struct mdio_gpio_info *bitbang =
-		container_of(ctrl, struct mdio_gpio_info, ctrl);
-
-	gpiod_set_value_cansleep(bitbang->mdc, what);
-}
-
-static const struct mdiobb_ops mdio_gpio_ops = {
-	.owner = THIS_MODULE,
-	.set_mdc = mdc_set,
-	.set_mdio_dir = mdio_dir,
-	.set_mdio_data = mdio_set,
-	.get_mdio_data = mdio_get,
-};
-
-static struct mii_bus *mdio_gpio_bus_init(struct device *dev,
-					  struct mdio_gpio_info *bitbang,
-					  int bus_id)
-{
-	struct mdio_gpio_platform_data *pdata = dev_get_platdata(dev);
-	struct mii_bus *new_bus;
-
-	bitbang->ctrl.ops = &mdio_gpio_ops;
-
-	new_bus = alloc_mdio_bitbang(&bitbang->ctrl);
-	if (!new_bus)
-		return NULL;
-
-	new_bus->name = "GPIO Bitbanged MDIO";
-	new_bus->parent = dev;
-
-	if (bus_id != -1)
-		snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id);
-	else
-		strncpy(new_bus->id, "gpio", MII_BUS_ID_SIZE);
-
-	if (pdata) {
-		new_bus->phy_mask = pdata->phy_mask;
-		new_bus->phy_ignore_ta_mask = pdata->phy_ignore_ta_mask;
-	}
-
-	dev_set_drvdata(dev, new_bus);
-
-	return new_bus;
-}
-
-static void mdio_gpio_bus_deinit(struct device *dev)
-{
-	struct mii_bus *bus = dev_get_drvdata(dev);
-
-	free_mdio_bitbang(bus);
-}
-
-static void mdio_gpio_bus_destroy(struct device *dev)
-{
-	struct mii_bus *bus = dev_get_drvdata(dev);
-
-	mdiobus_unregister(bus);
-	mdio_gpio_bus_deinit(dev);
-}
-
-static int mdio_gpio_probe(struct platform_device *pdev)
-{
-	struct mdio_gpio_info *bitbang;
-	struct mii_bus *new_bus;
-	int ret, bus_id;
-
-	bitbang = devm_kzalloc(&pdev->dev, sizeof(*bitbang), GFP_KERNEL);
-	if (!bitbang)
-		return -ENOMEM;
-
-	ret = mdio_gpio_get_data(&pdev->dev, bitbang);
-	if (ret)
-		return ret;
-
-	if (pdev->dev.of_node) {
-		bus_id = of_alias_get_id(pdev->dev.of_node, "mdio-gpio");
-		if (bus_id < 0) {
-			dev_warn(&pdev->dev, "failed to get alias id\n");
-			bus_id = 0;
-		}
-	} else {
-		bus_id = pdev->id;
-	}
-
-	new_bus = mdio_gpio_bus_init(&pdev->dev, bitbang, bus_id);
-	if (!new_bus)
-		return -ENODEV;
-
-	ret = of_mdiobus_register(new_bus, pdev->dev.of_node);
-	if (ret)
-		mdio_gpio_bus_deinit(&pdev->dev);
-
-	return ret;
-}
-
-static int mdio_gpio_remove(struct platform_device *pdev)
-{
-	mdio_gpio_bus_destroy(&pdev->dev);
-
-	return 0;
-}
-
-static const struct of_device_id mdio_gpio_of_match[] = {
-	{ .compatible = "virtual,mdio-gpio", },
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, mdio_gpio_of_match);
-
-static struct platform_driver mdio_gpio_driver = {
-	.probe = mdio_gpio_probe,
-	.remove = mdio_gpio_remove,
-	.driver		= {
-		.name	= "mdio-gpio",
-		.of_match_table = mdio_gpio_of_match,
-	},
-};
-
-module_platform_driver(mdio_gpio_driver);
-
-MODULE_ALIAS("platform:mdio-gpio");
-MODULE_AUTHOR("Laurent Pinchart, Paulius Zaleckas");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("Generic driver for MDIO bus emulation using GPIO");