pruss.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * PRU-ICSS Subsystem user interfaces
 4 *
 5 * Copyright (C) 2015-2022 Texas Instruments Incorporated - http://www.ti.com
 6 *	Suman Anna <s-anna@ti.com>
 7 */
 8
 9#ifndef __LINUX_PRUSS_H
10#define __LINUX_PRUSS_H
11
12#include <linux/device.h>
13#include <linux/types.h>
14
15#define PRU_RPROC_DRVNAME "pru-rproc"
16
17/**
18 * enum pruss_pru_id - PRU core identifiers
19 * @PRUSS_PRU0: PRU Core 0.
20 * @PRUSS_PRU1: PRU Core 1.
21 * @PRUSS_NUM_PRUS: Total number of PRU Cores available.
22 *
23 */
24
25enum pruss_pru_id {
26	PRUSS_PRU0 = 0,
27	PRUSS_PRU1,
28	PRUSS_NUM_PRUS,
29};
30
31/*
32 * enum pru_ctable_idx - Configurable Constant table index identifiers
33 */
34enum pru_ctable_idx {
35	PRU_C24 = 0,
36	PRU_C25,
37	PRU_C26,
38	PRU_C27,
39	PRU_C28,
40	PRU_C29,
41	PRU_C30,
42	PRU_C31,
43};
44
45struct device_node;
46struct rproc;
47
48#if IS_ENABLED(CONFIG_PRU_REMOTEPROC)
49
50struct rproc *pru_rproc_get(struct device_node *np, int index,
51			    enum pruss_pru_id *pru_id);
52void pru_rproc_put(struct rproc *rproc);
53int pru_rproc_set_ctable(struct rproc *rproc, enum pru_ctable_idx c, u32 addr);
54
55#else
56
57static inline struct rproc *
58pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id)
59{
60	return ERR_PTR(-EOPNOTSUPP);
61}
62
63static inline void pru_rproc_put(struct rproc *rproc) { }
64
65static inline int pru_rproc_set_ctable(struct rproc *rproc,
66				       enum pru_ctable_idx c, u32 addr)
67{
68	return -EOPNOTSUPP;
69}
70
71#endif /* CONFIG_PRU_REMOTEPROC */
72
73static inline bool is_pru_rproc(struct device *dev)
74{
75	const char *drv_name = dev_driver_string(dev);
76
77	if (strncmp(drv_name, PRU_RPROC_DRVNAME, sizeof(PRU_RPROC_DRVNAME)))
78		return false;
79
80	return true;
81}
82
83#endif /* __LINUX_PRUSS_H */