49 lines
1001 B
C
49 lines
1001 B
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* STMicroelectronics STUSB Type-C controller driver
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* based on Linux drivers/usb/typec/stusb160x.c
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*
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* Copyright (C) 2020, STMicroelectronics - All Rights Reserved
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*/
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#define LOG_CATEGORY UCLASS_I2C_GENERIC
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#include <common.h>
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#include <dm.h>
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#include <i2c.h>
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/* REGISTER */
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#define STUSB160X_CC_CONNECTION_STATUS 0x0E
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/* STUSB160X_CC_CONNECTION_STATUS bitfields */
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#define STUSB160X_CC_ATTACH BIT(0)
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int stusb160x_cable_connected(void)
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{
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_I2C_GENERIC,
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DM_DRIVER_GET(stusb160x),
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&dev);
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if (ret < 0)
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return ret;
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ret = dm_i2c_reg_read(dev, STUSB160X_CC_CONNECTION_STATUS);
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if (ret < 0)
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return 0;
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return ret & STUSB160X_CC_ATTACH;
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}
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static const struct udevice_id stusb160x_ids[] = {
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{ .compatible = "st,stusb1600" },
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{}
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};
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U_BOOT_DRIVER(stusb160x) = {
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.name = "stusb160x",
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.id = UCLASS_I2C_GENERIC,
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.of_match = stusb160x_ids,
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};
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