ipq40xx: backport upstream MDIO driver

IPQ40xx MDIO driver was upstreamed in kernel version 5.8.
So lets backport the upstream version and drop our local one.

This also refreshed the kernel config since the symbol name has changed.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>

1 files changed, 0 insertions, 225 deletions

diff --git a/target/linux/ipq40xx/patches-5.4/700-net-add-qualcomm-mdio.patch b/target/linux/ipq40xx/patches-5.4/700-net-add-qualcomm-mdio.patch
deleted file mode 100644
index 3345d84fb8..0000000000
--- a/target/linux/ipq40xx/patches-5.4/700-net-add-qualcomm-mdio.patch
+++ /dev/null
@@ -1,225 +0,0 @@
---- a/drivers/net/phy/Kconfig
-+++ b/drivers/net/phy/Kconfig
-@@ -577,6 +577,13 @@ config XILINX_GMII2RGMII
- 	  the Reduced Gigabit Media Independent Interface(RGMII) between
- 	  Ethernet physical media devices and the Gigabit Ethernet controller.
- 
-+config MDIO_IPQ40XX
-+	tristate "Qualcomm Atheros ipq40xx MDIO interface"
-+	depends on HAS_IOMEM && OF
-+	---help---
-+	  This driver supports the MDIO interface found in Qualcomm
-+	  Atheros ipq40xx Soc chip.
-+
- endif # PHYLIB
- 
- config MICREL_KS8995MA
---- a/drivers/net/phy/Makefile
-+++ b/drivers/net/phy/Makefile
-@@ -50,6 +50,7 @@ obj-$(CONFIG_MDIO_CAVIUM)	+= mdio-cavium
- obj-$(CONFIG_MDIO_GPIO)		+= mdio-gpio.o
- obj-$(CONFIG_MDIO_HISI_FEMAC)	+= mdio-hisi-femac.o
- obj-$(CONFIG_MDIO_I2C)		+= mdio-i2c.o
-+obj-$(CONFIG_MDIO_IPQ40XX)	+= mdio-ipq40xx.o
- obj-$(CONFIG_MDIO_MOXART)	+= mdio-moxart.o
- obj-$(CONFIG_MDIO_MSCC_MIIM)	+= mdio-mscc-miim.o
- obj-$(CONFIG_MDIO_OCTEON)	+= mdio-octeon.o
---- /dev/null
-+++ b/drivers/net/phy/mdio-ipq40xx.c
-@@ -0,0 +1,196 @@
-+/*
-+ * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
-+ *
-+ * Permission to use, copy, modify, and/or distribute this software for
-+ * any purpose with or without fee is hereby granted, provided that the
-+ * above copyright notice and this permission notice appear in all copies.
-+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
-+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-+ */
-+
-+#include <linux/delay.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/io.h>
-+#include <linux/of_address.h>
-+#include <linux/of_mdio.h>
-+#include <linux/phy.h>
-+#include <linux/platform_device.h>
-+
-+#define MDIO_CTRL_0_REG		0x40
-+#define MDIO_CTRL_1_REG		0x44
-+#define MDIO_CTRL_2_REG		0x48
-+#define MDIO_CTRL_3_REG		0x4c
-+#define MDIO_CTRL_4_REG		0x50
-+#define MDIO_CTRL_4_ACCESS_BUSY		BIT(16)
-+#define MDIO_CTRL_4_ACCESS_START		BIT(8)
-+#define MDIO_CTRL_4_ACCESS_CODE_READ		0
-+#define MDIO_CTRL_4_ACCESS_CODE_WRITE	1
-+#define CTRL_0_REG_DEFAULT_VALUE	0x150FF
-+
-+#define IPQ40XX_MDIO_RETRY	1000
-+#define IPQ40XX_MDIO_DELAY	10
-+
-+struct ipq40xx_mdio_data {
-+	struct mii_bus	*mii_bus;
-+	void __iomem	*membase;
-+	struct device	*dev;
-+};
-+
-+static int ipq40xx_mdio_wait_busy(struct ipq40xx_mdio_data *am)
-+{
-+	int i;
-+
-+	for (i = 0; i < IPQ40XX_MDIO_RETRY; i++) {
-+		unsigned int busy;
-+
-+		busy = readl(am->membase + MDIO_CTRL_4_REG) &
-+			MDIO_CTRL_4_ACCESS_BUSY;
-+		if (!busy)
-+			return 0;
-+
-+		/* BUSY might take to be cleard by 15~20 times of loop */
-+		udelay(IPQ40XX_MDIO_DELAY);
-+	}
-+
-+	dev_err(am->dev, "%s: MDIO operation timed out\n", am->mii_bus->name);
-+
-+	return -ETIMEDOUT;
-+}
-+
-+static int ipq40xx_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-+{
-+	struct ipq40xx_mdio_data *am = bus->priv;
-+	int value = 0;
-+	unsigned int cmd = 0;
-+
-+	lockdep_assert_held(&bus->mdio_lock);
-+
-+	if (ipq40xx_mdio_wait_busy(am))
-+		return -ETIMEDOUT;
-+
-+	/* issue the phy address and reg */
-+	writel((mii_id << 8) | regnum, am->membase + MDIO_CTRL_1_REG);
-+
-+	cmd = MDIO_CTRL_4_ACCESS_START|MDIO_CTRL_4_ACCESS_CODE_READ;
-+
-+	/* issue read command */
-+	writel(cmd, am->membase + MDIO_CTRL_4_REG);
-+
-+	/* Wait read complete */
-+	if (ipq40xx_mdio_wait_busy(am))
-+		return -ETIMEDOUT;
-+
-+	/* Read data */
-+	value = readl(am->membase + MDIO_CTRL_3_REG);
-+
-+	return value;
-+}
-+
-+static int ipq40xx_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
-+			    u16 value)
-+{
-+	struct ipq40xx_mdio_data *am = bus->priv;
-+	unsigned int cmd = 0;
-+
-+	lockdep_assert_held(&bus->mdio_lock);
-+
-+	if (ipq40xx_mdio_wait_busy(am))
-+		return -ETIMEDOUT;
-+
-+	/* issue the phy address and reg */
-+	writel((mii_id << 8) | regnum, am->membase + MDIO_CTRL_1_REG);
-+
-+	/* issue write data */
-+	writel(value, am->membase + MDIO_CTRL_2_REG);
-+
-+	cmd = MDIO_CTRL_4_ACCESS_START|MDIO_CTRL_4_ACCESS_CODE_WRITE;
-+	/* issue write command */
-+	writel(cmd, am->membase + MDIO_CTRL_4_REG);
-+
-+	/* Wait write complete */
-+	if (ipq40xx_mdio_wait_busy(am))
-+		return -ETIMEDOUT;
-+
-+	return 0;
-+}
-+
-+static int ipq40xx_mdio_probe(struct platform_device *pdev)
-+{
-+	struct ipq40xx_mdio_data *am;
-+	struct resource *res;
-+	int i;
-+
-+	am = devm_kzalloc(&pdev->dev, sizeof(*am), GFP_KERNEL);
-+	if (!am)
-+		return -ENOMEM;
-+
-+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	if (!res) {
-+		dev_err(&pdev->dev, "no iomem resource found\n");
-+		return -ENXIO;
-+	}
-+
-+	am->membase = devm_ioremap_resource(&pdev->dev, res);
-+	if (IS_ERR(am->membase)) {
-+		dev_err(&pdev->dev, "unable to ioremap registers\n");
-+		return PTR_ERR(am->membase);
-+	}
-+
-+	am->mii_bus = devm_mdiobus_alloc(&pdev->dev);
-+	if (!am->mii_bus)
-+		return  -ENOMEM;
-+
-+	writel(CTRL_0_REG_DEFAULT_VALUE, am->membase + MDIO_CTRL_0_REG);
-+
-+	am->mii_bus->name = "ipq40xx_mdio";
-+	am->mii_bus->read = ipq40xx_mdio_read;
-+	am->mii_bus->write = ipq40xx_mdio_write;
-+	am->mii_bus->priv = am;
-+	am->mii_bus->parent = &pdev->dev;
-+	snprintf(am->mii_bus->id, MII_BUS_ID_SIZE, "%s", dev_name(&pdev->dev));
-+
-+	am->dev = &pdev->dev;
-+	platform_set_drvdata(pdev, am);
-+
-+	return of_mdiobus_register(am->mii_bus, pdev->dev.of_node);
-+}
-+
-+static int ipq40xx_mdio_remove(struct platform_device *pdev)
-+{
-+	struct ipq40xx_mdio_data *am = platform_get_drvdata(pdev);
-+
-+	mdiobus_unregister(am->mii_bus);
-+
-+	return 0;
-+}
-+
-+static const struct of_device_id ipq40xx_mdio_dt_ids[] = {
-+	{ .compatible = "qcom,ipq4019-mdio" },
-+	{ }
-+};
-+MODULE_DEVICE_TABLE(of, ipq40xx_mdio_dt_ids);
-+
-+static struct platform_driver ipq40xx_mdio_driver = {
-+	.probe = ipq40xx_mdio_probe,
-+	.remove = ipq40xx_mdio_remove,
-+	.driver = {
-+		.name = "ipq40xx-mdio",
-+		.of_match_table = ipq40xx_mdio_dt_ids,
-+	},
-+};
-+
-+module_platform_driver(ipq40xx_mdio_driver);
-+
-+#define DRV_VERSION     "1.0"
-+
-+MODULE_DESCRIPTION("IPQ40XX MDIO interface driver");
-+MODULE_AUTHOR("Qualcomm Atheros");
-+MODULE_VERSION(DRV_VERSION);
-+MODULE_LICENSE("Dual BSD/GPL");