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43 lines
1.1 KiB
43 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* USB of helper code |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/usb/of.h> |
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#include <linux/usb/otg.h> |
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static const char *const usbphy_modes[] = { |
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[USBPHY_INTERFACE_MODE_UNKNOWN] = "", |
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[USBPHY_INTERFACE_MODE_UTMI] = "utmi", |
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[USBPHY_INTERFACE_MODE_UTMIW] = "utmi_wide", |
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[USBPHY_INTERFACE_MODE_ULPI] = "ulpi", |
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[USBPHY_INTERFACE_MODE_SERIAL] = "serial", |
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[USBPHY_INTERFACE_MODE_HSIC] = "hsic", |
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}; |
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/** |
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* of_usb_get_phy_mode - Get phy mode for given device_node |
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* @np: Pointer to the given device_node |
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* |
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* The function gets phy interface string from property 'phy_type', |
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* and returns the corresponding enum usb_phy_interface |
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*/ |
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enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np) |
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{ |
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const char *phy_type; |
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int err, i; |
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err = of_property_read_string(np, "phy_type", &phy_type); |
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if (err < 0) |
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return USBPHY_INTERFACE_MODE_UNKNOWN; |
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for (i = 0; i < ARRAY_SIZE(usbphy_modes); i++) |
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if (!strcmp(phy_type, usbphy_modes[i])) |
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return i; |
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return USBPHY_INTERFACE_MODE_UNKNOWN; |
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} |
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EXPORT_SYMBOL_GPL(of_usb_get_phy_mode);
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