1 #include <linux/module.h> 2 #include <linux/platform_device.h> 3 #include <linux/dma-mapping.h> 4 #include <linux/usb/otg.h> 5 #include <linux/usb/usb_phy_gen_xceiv.h> 6 #include <linux/slab.h> 7 #include <linux/clk.h> 8 #include <linux/regulator/consumer.h> 9 #include <linux/of.h> 10 #include <linux/of_address.h> 11 12 #include "am35x-phy-control.h" 13 #include "phy-generic.h" 14 15 struct am335x_phy { 16 struct usb_phy_gen_xceiv usb_phy_gen; 17 struct phy_control *phy_ctrl; 18 int id; 19 }; 20 21 static int am335x_init(struct usb_phy *phy) 22 { 23 struct am335x_phy *am_phy = dev_get_drvdata(phy->dev); 24 25 phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true); 26 return 0; 27 } 28 29 static void am335x_shutdown(struct usb_phy *phy) 30 { 31 struct am335x_phy *am_phy = dev_get_drvdata(phy->dev); 32 33 phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false); 34 } 35 36 static int am335x_phy_probe(struct platform_device *pdev) 37 { 38 struct am335x_phy *am_phy; 39 struct device *dev = &pdev->dev; 40 int ret; 41 42 am_phy = devm_kzalloc(dev, sizeof(*am_phy), GFP_KERNEL); 43 if (!am_phy) 44 return -ENOMEM; 45 46 am_phy->phy_ctrl = am335x_get_phy_control(dev); 47 if (!am_phy->phy_ctrl) 48 return -EPROBE_DEFER; 49 am_phy->id = of_alias_get_id(pdev->dev.of_node, "phy"); 50 if (am_phy->id < 0) { 51 dev_err(&pdev->dev, "Missing PHY id: %d\n", am_phy->id); 52 return am_phy->id; 53 } 54 55 ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen, 56 USB_PHY_TYPE_USB2, 0, false, false); 57 if (ret) 58 return ret; 59 60 ret = usb_add_phy_dev(&am_phy->usb_phy_gen.phy); 61 if (ret) 62 return ret; 63 am_phy->usb_phy_gen.phy.init = am335x_init; 64 am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown; 65 66 platform_set_drvdata(pdev, am_phy); 67 68 return 0; 69 70 return ret; 71 } 72 73 static int am335x_phy_remove(struct platform_device *pdev) 74 { 75 struct am335x_phy *am_phy = platform_get_drvdata(pdev); 76 77 usb_remove_phy(&am_phy->usb_phy_gen.phy); 78 return 0; 79 } 80 81 static const struct of_device_id am335x_phy_ids[] = { 82 { .compatible = "ti,am335x-usb-phy" }, 83 { } 84 }; 85 MODULE_DEVICE_TABLE(of, am335x_phy_ids); 86 87 static struct platform_driver am335x_phy_driver = { 88 .probe = am335x_phy_probe, 89 .remove = am335x_phy_remove, 90 .driver = { 91 .name = "am335x-phy-driver", 92 .owner = THIS_MODULE, 93 .of_match_table = of_match_ptr(am335x_phy_ids), 94 }, 95 }; 96 97 module_platform_driver(am335x_phy_driver); 98 MODULE_LICENSE("GPL v2"); 99