[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/phy/marvell/phy-armada375-usb2.c b/src/kernel/linux/v4.14/drivers/phy/marvell/phy-armada375-usb2.c
new file mode 100644
index 0000000..1a3db28
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/phy/marvell/phy-armada375-usb2.c
@@ -0,0 +1,158 @@
+/*
+ * USB cluster support for Armada 375 platform.
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2 or later. This program is licensed "as is"
+ * without any warranty of any kind, whether express or implied.
+ *
+ * Armada 375 comes with an USB2 host and device controller and an
+ * USB3 controller. The USB cluster control register allows to manage
+ * common features of both USB controllers.
+ */
+
+#include <dt-bindings/phy/phy.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+#define USB2_PHY_CONFIG_DISABLE BIT(0)
+
+struct armada375_cluster_phy {
+ struct phy *phy;
+ void __iomem *reg;
+ bool use_usb3;
+ int phy_provided;
+};
+
+static int armada375_usb_phy_init(struct phy *phy)
+{
+ struct armada375_cluster_phy *cluster_phy;
+ u32 reg;
+
+ cluster_phy = phy_get_drvdata(phy);
+ if (!cluster_phy)
+ return -ENODEV;
+
+ reg = readl(cluster_phy->reg);
+ if (cluster_phy->use_usb3)
+ reg |= USB2_PHY_CONFIG_DISABLE;
+ else
+ reg &= ~USB2_PHY_CONFIG_DISABLE;
+ writel(reg, cluster_phy->reg);
+
+ return 0;
+}
+
+static const struct phy_ops armada375_usb_phy_ops = {
+ .init = armada375_usb_phy_init,
+ .owner = THIS_MODULE,
+};
+
+/*
+ * Only one controller can use this PHY. We shouldn't have the case
+ * when two controllers want to use this PHY. But if this case occurs
+ * then we provide a phy to the first one and return an error for the
+ * next one. This error has also to be an error returned by
+ * devm_phy_optional_get() so different from ENODEV for USB2. In the
+ * USB3 case it still optional and we use ENODEV.
+ */
+static struct phy *armada375_usb_phy_xlate(struct device *dev,
+ struct of_phandle_args *args)
+{
+ struct armada375_cluster_phy *cluster_phy = dev_get_drvdata(dev);
+
+ if (!cluster_phy)
+ return ERR_PTR(-ENODEV);
+
+ /*
+ * Either the phy had never been requested and then the first
+ * usb claiming it can get it, or it had already been
+ * requested in this case, we only allow to use it with the
+ * same configuration.
+ */
+ if (WARN_ON((cluster_phy->phy_provided != PHY_NONE) &&
+ (cluster_phy->phy_provided != args->args[0]))) {
+ dev_err(dev, "This PHY has already been provided!\n");
+ dev_err(dev, "Check your device tree, only one controller can use it\n.");
+ if (args->args[0] == PHY_TYPE_USB2)
+ return ERR_PTR(-EBUSY);
+ else
+ return ERR_PTR(-ENODEV);
+ }
+
+ if (args->args[0] == PHY_TYPE_USB2)
+ cluster_phy->use_usb3 = false;
+ else if (args->args[0] == PHY_TYPE_USB3)
+ cluster_phy->use_usb3 = true;
+ else {
+ dev_err(dev, "Invalid PHY mode\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ /* Store which phy mode is used for next test */
+ cluster_phy->phy_provided = args->args[0];
+
+ return cluster_phy->phy;
+}
+
+static int armada375_usb_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct phy *phy;
+ struct phy_provider *phy_provider;
+ void __iomem *usb_cluster_base;
+ struct resource *res;
+ struct armada375_cluster_phy *cluster_phy;
+
+ cluster_phy = devm_kzalloc(dev, sizeof(*cluster_phy), GFP_KERNEL);
+ if (!cluster_phy)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ usb_cluster_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(usb_cluster_base))
+ return PTR_ERR(usb_cluster_base);
+
+ phy = devm_phy_create(dev, NULL, &armada375_usb_phy_ops);
+ if (IS_ERR(phy)) {
+ dev_err(dev, "failed to create PHY\n");
+ return PTR_ERR(phy);
+ }
+
+ cluster_phy->phy = phy;
+ cluster_phy->reg = usb_cluster_base;
+
+ dev_set_drvdata(dev, cluster_phy);
+ phy_set_drvdata(phy, cluster_phy);
+
+ phy_provider = devm_of_phy_provider_register(&pdev->dev,
+ armada375_usb_phy_xlate);
+ return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static const struct of_device_id of_usb_cluster_table[] = {
+ { .compatible = "marvell,armada-375-usb-cluster", },
+ { /* end of list */ },
+};
+MODULE_DEVICE_TABLE(of, of_usb_cluster_table);
+
+static struct platform_driver armada375_usb_phy_driver = {
+ .probe = armada375_usb_phy_probe,
+ .driver = {
+ .of_match_table = of_usb_cluster_table,
+ .name = "armada-375-usb-cluster",
+ }
+};
+module_platform_driver(armada375_usb_phy_driver);
+
+MODULE_DESCRIPTION("Armada 375 USB cluster driver");
+MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
+MODULE_LICENSE("GPL");