[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/usb/phy/phy-am335x.c b/src/kernel/linux/v4.14/drivers/usb/phy/phy-am335x.c
new file mode 100644
index 0000000..cb1382a
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/usb/phy/phy-am335x.c
@@ -0,0 +1,147 @@
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/usb_phy_generic.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/usb/of.h>
+
+#include "phy-am335x-control.h"
+#include "phy-generic.h"
+
+struct am335x_phy {
+ struct usb_phy_generic usb_phy_gen;
+ struct phy_control *phy_ctrl;
+ int id;
+ enum usb_dr_mode dr_mode;
+};
+
+static int am335x_init(struct usb_phy *phy)
+{
+ struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);
+
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, true);
+ return 0;
+}
+
+static void am335x_shutdown(struct usb_phy *phy)
+{
+ struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);
+
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);
+}
+
+static int am335x_phy_probe(struct platform_device *pdev)
+{
+ struct am335x_phy *am_phy;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ am_phy = devm_kzalloc(dev, sizeof(*am_phy), GFP_KERNEL);
+ if (!am_phy)
+ return -ENOMEM;
+
+ am_phy->phy_ctrl = am335x_get_phy_control(dev);
+ if (!am_phy->phy_ctrl)
+ return -EPROBE_DEFER;
+
+ am_phy->id = of_alias_get_id(pdev->dev.of_node, "phy");
+ if (am_phy->id < 0) {
+ dev_err(&pdev->dev, "Missing PHY id: %d\n", am_phy->id);
+ return am_phy->id;
+ }
+
+ am_phy->dr_mode = of_usb_get_dr_mode_by_phy(pdev->dev.of_node, -1);
+
+ ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen, NULL);
+ if (ret)
+ return ret;
+
+ am_phy->usb_phy_gen.phy.init = am335x_init;
+ am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown;
+
+ platform_set_drvdata(pdev, am_phy);
+ device_init_wakeup(dev, true);
+
+ /*
+ * If we leave PHY wakeup enabled then AM33XX wakes up
+ * immediately from DS0. To avoid this we mark dev->power.can_wakeup
+ * to false. The same is checked in suspend routine to decide
+ * on whether to enable PHY wakeup or not.
+ * PHY wakeup works fine in standby mode, there by allowing us to
+ * handle remote wakeup, wakeup on disconnect and connect.
+ */
+
+ device_set_wakeup_enable(dev, false);
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);
+
+ return usb_add_phy_dev(&am_phy->usb_phy_gen.phy);
+}
+
+static int am335x_phy_remove(struct platform_device *pdev)
+{
+ struct am335x_phy *am_phy = platform_get_drvdata(pdev);
+
+ usb_remove_phy(&am_phy->usb_phy_gen.phy);
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int am335x_phy_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct am335x_phy *am_phy = platform_get_drvdata(pdev);
+
+ /*
+ * Enable phy wakeup only if dev->power.can_wakeup is true.
+ * Make sure to enable wakeup to support remote wakeup in
+ * standby mode ( same is not supported in OFF(DS0) mode).
+ * Enable it by doing
+ * echo enabled > /sys/bus/platform/devices/<usb-phy-id>/power/wakeup
+ */
+
+ if (device_may_wakeup(dev))
+ phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, true);
+
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);
+
+ return 0;
+}
+
+static int am335x_phy_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct am335x_phy *am_phy = platform_get_drvdata(pdev);
+
+ phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, true);
+
+ if (device_may_wakeup(dev))
+ phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, false);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(am335x_pm_ops, am335x_phy_suspend, am335x_phy_resume);
+
+static const struct of_device_id am335x_phy_ids[] = {
+ { .compatible = "ti,am335x-usb-phy" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, am335x_phy_ids);
+
+static struct platform_driver am335x_phy_driver = {
+ .probe = am335x_phy_probe,
+ .remove = am335x_phy_remove,
+ .driver = {
+ .name = "am335x-phy-driver",
+ .pm = &am335x_pm_ops,
+ .of_match_table = am335x_phy_ids,
+ },
+};
+
+module_platform_driver(am335x_phy_driver);
+MODULE_LICENSE("GPL v2");