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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2018 Mellanox Technologies. All rights reserved. */
/* Copyright (c) 2018 Oleksandr Shamray <oleksandrs@mellanox.com> */
/* Copyright (c) 2019 Intel Corporation */
#ifndef __LINUX_JTAG_H
#define __LINUX_JTAG_H
#include <linux/types.h>
#include <uapi/linux/jtag.h>
#define JTAG_MAX_XFER_DATA_LEN 65535
struct jtag;
/**
* struct jtag_ops - callbacks for JTAG control functions:
*
* @freq_get: get frequency function. Filled by dev driver
* @freq_set: set frequency function. Filled by dev driver
* @status_get: get JTAG TAPC state function. Mandatory, Filled by dev driver
* @status_set: set JTAG TAPC state function. Mandatory, Filled by dev driver
* @xfer: send JTAG xfer function. Mandatory func. Filled by dev driver
* @mode_set: set specific work mode for JTAG. Filled by dev driver
* @bitbang: set low level bitbang operations. Filled by dev driver
* @enable: enables JTAG interface in master mode. Filled by dev driver
* @disable: disables JTAG interface master mode. Filled by dev driver
*/
struct jtag_ops {
int (*freq_get)(struct jtag *jtag, u32 *freq);
int (*freq_set)(struct jtag *jtag, u32 freq);
int (*status_get)(struct jtag *jtag, u32 *state);
int (*status_set)(struct jtag *jtag, struct jtag_tap_state *endst);
int (*xfer)(struct jtag *jtag, struct jtag_xfer *xfer, u8 *xfer_data);
int (*mode_set)(struct jtag *jtag, struct jtag_mode *jtag_mode);
int (*bitbang)(struct jtag *jtag, struct bitbang_packet *bitbang,
struct tck_bitbang *bitbang_data);
int (*enable)(struct jtag *jtag);
int (*disable)(struct jtag *jtag);
};
void *jtag_priv(struct jtag *jtag);
int devm_jtag_register(struct device *dev, struct jtag *jtag);
struct jtag *jtag_alloc(struct device *host, size_t priv_size,
const struct jtag_ops *ops);
void jtag_free(struct jtag *jtag);
#endif /* __LINUX_JTAG_H */
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