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
25 enum 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 */
34 enum 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
45 struct device_node;
46 struct rproc;
47
48 #if IS_ENABLED(CONFIG_PRU_REMOTEPROC)
49
50 struct rproc *pru_rproc_get(struct device_node *np, int index,
51 enum pruss_pru_id *pru_id);
52 void pru_rproc_put(struct rproc *rproc);
53 int pru_rproc_set_ctable(struct rproc *rproc, enum pru_ctable_idx c, u32 addr);
54
55 #else
56
57 static inline struct rproc *
58 pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id)
59 {
60 return ERR_PTR(-EOPNOTSUPP);
61 }
62
63 static inline void pru_rproc_put(struct rproc *rproc) { }
64
65 static 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
73 static 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 */
84
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