LXR linux/drivers/interconnect/qcom/icc-rpm.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) 2020 Linaro Ltd
   4 */
   5
   6#ifndef __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
   7#define __DRIVERS_INTERCONNECT_QCOM_ICC_RPM_H
   8
   9#define RPM_BUS_MASTER_REQ      0x73616d62
  10#define RPM_BUS_SLAVE_REQ       0x766c7362
  11
  12#define QCOM_MAX_LINKS 12
  13
  14#define to_qcom_provider(_provider) \
  15        container_of(_provider, struct qcom_icc_provider, provider)
  16
  17/**
  18 * struct qcom_icc_provider - Qualcomm specific interconnect provider
  19 * @provider: generic interconnect provider
  20 * @bus_clks: the clk_bulk_data table of bus clocks
  21 * @num_clks: the total number of clk_bulk_data entries
  22 */
  23struct qcom_icc_provider {
  24        struct icc_provider provider;
  25        struct clk_bulk_data *bus_clks;
  26        int num_clks;
  27};
  28
  29/**
  30 * struct qcom_icc_node - Qualcomm specific interconnect nodes
  31 * @name: the node name used in debugfs
  32 * @id: a unique node identifier
  33 * @links: an array of nodes where we can go next while traversing
  34 * @num_links: the total number of @links
  35 * @buswidth: width of the interconnect between a node and the bus (bytes)
  36 * @mas_rpm_id: RPM id for devices that are bus masters
  37 * @slv_rpm_id: RPM id for devices that are bus slaves
  38 * @rate: current bus clock rate in Hz
  39 */
  40struct qcom_icc_node {
  41        unsigned char *name;
  42        u16 id;
  43        u16 links[QCOM_MAX_LINKS];
  44        u16 num_links;
  45        u16 buswidth;
  46        int mas_rpm_id;
  47        int slv_rpm_id;
  48        u64 rate;
  49};
  50
  51struct qcom_icc_desc {
  52        struct qcom_icc_node **nodes;
  53        size_t num_nodes;
  54};
  55
  56#define DEFINE_QNODE(_name, _id, _buswidth, _mas_rpm_id, _slv_rpm_id,   \
  57                     ...)                                               \
  58                static struct qcom_icc_node _name = {                   \
  59                .name = #_name,                                         \
  60                .id = _id,                                              \
  61                .buswidth = _buswidth,                                  \
  62                .mas_rpm_id = _mas_rpm_id,                              \
  63                .slv_rpm_id = _slv_rpm_id,                              \
  64                .num_links = ARRAY_SIZE(((int[]){ __VA_ARGS__ })),      \
  65                .links = { __VA_ARGS__ },                               \
  66        }
  67
  68
  69int qnoc_probe(struct platform_device *pdev, size_t cd_size, int cd_num,
  70               const struct clk_bulk_data *cd);
  71int qnoc_remove(struct platform_device *pdev);
  72
  73#endif
  74