| 1 | // SPDX-License-Identifier: GPL-2.0+ |
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| 2 | /* |
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| 3 | * USB of helper code |
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| 4 | */ |
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| 5 | |
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| 6 | #include <linux/kernel.h> |
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| 7 | #include <linux/module.h> |
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| 8 | #include <linux/of.h> |
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| 9 | #include <linux/usb/of.h> |
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| 10 | #include <linux/usb/otg.h> |
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| 11 | |
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| 12 | static const char *const usbphy_modes[] = { |
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| 13 | [USBPHY_INTERFACE_MODE_UNKNOWN] = "" , |
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| 14 | [USBPHY_INTERFACE_MODE_UTMI] = "utmi" , |
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| 15 | [USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide" , |
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| 16 | [USBPHY_INTERFACE_MODE_ULPI] = "ulpi" , |
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| 17 | [USBPHY_INTERFACE_MODE_SERIAL] = "serial" , |
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| 18 | [USBPHY_INTERFACE_MODE_HSIC] = "hsic" , |
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| 19 | }; |
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| 20 | |
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| 21 | /** |
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| 22 | * of_usb_get_phy_mode - Get phy mode for given device_node |
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| 23 | * @np: Pointer to the given device_node |
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| 24 | * |
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| 25 | * The function gets phy interface string from property 'phy_type', |
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| 26 | * and returns the corresponding enum usb_phy_interface |
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| 27 | */ |
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| 28 | enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np) |
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| 29 | { |
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| 30 | const char *phy_type; |
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| 31 | int err, i; |
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| 32 | |
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| 33 | err = of_property_read_string(np, propname: "phy_type" , out_string: &phy_type); |
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| 34 | if (err < 0) |
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| 35 | return USBPHY_INTERFACE_MODE_UNKNOWN; |
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| 36 | |
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| 37 | for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++) |
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| 38 | if (!strcmp(phy_type, usbphy_modes[i])) |
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| 39 | return i; |
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| 40 | |
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| 41 | return USBPHY_INTERFACE_MODE_UNKNOWN; |
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| 42 | } |
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| 43 | EXPORT_SYMBOL_GPL(of_usb_get_phy_mode); |
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| 44 | |
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