include/linux/remoteproc/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
  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 */