1 // SPDX-License-Identifier: GPL-2.0
4 #include <linux/dma-mapping.h>
13 #include "phy-am335x-control.h"
14 #include "phy-generic.h"
25 	struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);  in am335x_init()
27 	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, true);  in am335x_init()
33 	struct am335x_phy *am_phy = dev_get_drvdata(phy->dev);  in am335x_shutdown()
35 	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);  in am335x_shutdown()
41 	struct device *dev = &pdev->dev;  in am335x_phy_probe()
46 		return -ENOMEM;  in am335x_phy_probe()
48 	am_phy->phy_ctrl = am335x_get_phy_control(dev);  in am335x_phy_probe()
49 	if (!am_phy->phy_ctrl)  in am335x_phy_probe()
50 		return -EPROBE_DEFER;  in am335x_phy_probe()
52 	am_phy->id = of_alias_get_id(pdev->dev.of_node, "phy");  in am335x_phy_probe()
53 	if (am_phy->id < 0) {  in am335x_phy_probe()
54 		dev_err(&pdev->dev, "Missing PHY id: %d\n", am_phy->id);  in am335x_phy_probe()
55 		return am_phy->id;  in am335x_phy_probe()
58 	am_phy->dr_mode = of_usb_get_dr_mode_by_phy(pdev->dev.of_node, -1);  in am335x_phy_probe()
60 	ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen);  in am335x_phy_probe()
64 	am_phy->usb_phy_gen.phy.init = am335x_init;  in am335x_phy_probe()
65 	am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown;  in am335x_phy_probe()
71 	 * If we leave PHY wakeup enabled then AM33XX wakes up  in am335x_phy_probe()
72 	 * immediately from DS0. To avoid this we mark dev->power.can_wakeup  in am335x_phy_probe()
74 	 * on whether to enable PHY wakeup or not.  in am335x_phy_probe()
75 	 * PHY wakeup works fine in standby mode, there by allowing us to  in am335x_phy_probe()
76 	 * handle remote wakeup, wakeup on disconnect and connect.  in am335x_phy_probe()
80 	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);  in am335x_phy_probe()
82 	return usb_add_phy_dev(&am_phy->usb_phy_gen.phy);  in am335x_phy_probe()
89 	usb_remove_phy(&am_phy->usb_phy_gen.phy);  in am335x_phy_remove()
98 	 * Enable phy wakeup only if dev->power.can_wakeup is true.  in am335x_phy_suspend()
99 	 * Make sure to enable wakeup to support remote wakeup	in  in am335x_phy_suspend()
100 	 * standby mode ( same is not supported in OFF(DS0) mode).  in am335x_phy_suspend()
102 	 * echo enabled > /sys/bus/platform/devices/<usb-phy-id>/power/wakeup  in am335x_phy_suspend()
106 		phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, true);  in am335x_phy_suspend()
108 	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, false);  in am335x_phy_suspend()
117 	phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, am_phy->dr_mode, true);  in am335x_phy_resume()
120 		phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, false);  in am335x_phy_resume()
129 	{ .compatible = "ti,am335x-usb-phy" },
138 		.name   = "am335x-phy-driver",