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 | |