drivers/interconnect/imx/imx.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Interconnect framework driver for i.MX SoC
   4  *
   5  * Copyright (c) 2019, BayLibre
   6  * Copyright (c) 2019-2020, NXP
   7  * Author: Alexandre Bailon <[email protected]>
   8  * Author: Leonard Crestez <[email protected]>
   9  */
  10 #ifndef __DRIVERS_INTERCONNECT_IMX_H
  11 #define __DRIVERS_INTERCONNECT_IMX_H
  12
  13 #include <linux/kernel.h>
  14
  15 #define IMX_ICC_MAX_LINKS       4
  16
  17 /*
  18  * struct imx_icc_node_adj - Describe a dynamic adjustable node
  19  */
  20 struct imx_icc_node_adj_desc {
  21         unsigned int bw_mul, bw_div;
  22         const char *phandle_name;
  23         bool main_noc;
  24 };
  25
  26 /*
  27  * struct imx_icc_node - Describe an interconnect node
  28  * @name: name of the node
  29  * @id: an unique id to identify the node
  30  * @links: an array of slaves' node id
  31  * @num_links: number of id defined in links
  32  */
  33 struct imx_icc_node_desc {
  34         const char *name;
  35         u16 id;
  36         u16 links[IMX_ICC_MAX_LINKS];
  37         u16 num_links;
  38         const struct imx_icc_node_adj_desc *adj;
  39 };
  40
  41 #define DEFINE_BUS_INTERCONNECT(_name, _id, _adj, ...)                  \
  42         {                                                               \
  43                 .id = _id,                                              \
  44                 .name = _name,                                          \
  45                 .adj = _adj,                                            \
  46                 .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })),      \
  47                 .links = { __VA_ARGS__ },                               \
  48         }
  49
  50 #define DEFINE_BUS_MASTER(_name, _id, _dest_id)                         \
  51         DEFINE_BUS_INTERCONNECT(_name, _id, NULL, _dest_id)
  52
  53 #define DEFINE_BUS_SLAVE(_name, _id, _adj)                              \
  54         DEFINE_BUS_INTERCONNECT(_name, _id, _adj)
  55
  56 int imx_icc_register(struct platform_device *pdev,
  57                      struct imx_icc_node_desc *nodes,
  58                      int nodes_count);
  59 int imx_icc_unregister(struct platform_device *pdev);
  60
  61 #endif /* __DRIVERS_INTERCONNECT_IMX_H */