linux/drivers/net/phy/mii_timestamper.c

// SPDX-License-Identifier: GPL-2.0
//
// Support for generic time stamping devices on MII buses.
// Copyright (C) 2018 Richard Cochran <[email protected]>
//

#include <linux/mii_timestamper.h>

static LIST_HEAD(mii_timestamping_devices);
static DEFINE_MUTEX(tstamping_devices_lock);

struct mii_timestamping_desc { … };

/**
 * register_mii_tstamp_controller() - registers an MII time stamping device.
 *
 * @device:	The device to be registered.
 * @ctrl:	Pointer to device's control interface.
 *
 * Returns zero on success or non-zero on failure.
 */
int register_mii_tstamp_controller(struct device *device,
				   struct mii_timestamping_ctrl *ctrl)
{ … }
EXPORT_SYMBOL(…);

/**
 * unregister_mii_tstamp_controller() - unregisters an MII time stamping device.
 *
 * @device:	A device previously passed to register_mii_tstamp_controller().
 */
void unregister_mii_tstamp_controller(struct device *device)
{ … }
EXPORT_SYMBOL(…);

/**
 * register_mii_timestamper - Enables a given port of an MII time stamper.
 *
 * @node:	The device tree node of the MII time stamp controller.
 * @port:	The index of the port to be enabled.
 *
 * Returns a valid interface on success or ERR_PTR otherwise.
 */
struct mii_timestamper *register_mii_timestamper(struct device_node *node,
						 unsigned int port)
{ … }
EXPORT_SYMBOL(…);

/**
 * unregister_mii_timestamper - Disables a given MII time stamper.
 *
 * @mii_ts:	An interface obtained via register_mii_timestamper().
 *
 */
void unregister_mii_timestamper(struct mii_timestamper *mii_ts)
{ … }
EXPORT_SYMBOL(…);