LXR linux/include/linux/greybus/bundle.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Greybus bundles
   4 *
   5 * Copyright 2014 Google Inc.
   6 * Copyright 2014 Linaro Ltd.
   7 */
   8
   9#ifndef __BUNDLE_H
  10#define __BUNDLE_H
  11
  12#include <linux/types.h>
  13#include <linux/list.h>
  14#include <linux/pm_runtime.h>
  15#include <linux/device.h>
  16
  17#define BUNDLE_ID_NONE  U8_MAX
  18
  19/* Greybus "public" definitions" */
  20struct gb_bundle {
  21        struct device           dev;
  22        struct gb_interface     *intf;
  23
  24        u8                      id;
  25        u8                      class;
  26        u8                      class_major;
  27        u8                      class_minor;
  28
  29        size_t                  num_cports;
  30        struct greybus_descriptor_cport *cport_desc;
  31
  32        struct list_head        connections;
  33        u8                      *state;
  34
  35        struct list_head        links;  /* interface->bundles */
  36};
  37#define to_gb_bundle(d) container_of(d, struct gb_bundle, dev)
  38
  39/* Greybus "private" definitions" */
  40struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
  41                                   u8 class);
  42int gb_bundle_add(struct gb_bundle *bundle);
  43void gb_bundle_destroy(struct gb_bundle *bundle);
  44
  45/* Bundle Runtime PM wrappers */
  46#ifdef CONFIG_PM
  47static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
  48{
  49        int retval;
  50
  51        retval = pm_runtime_get_sync(&bundle->dev);
  52        if (retval < 0) {
  53                dev_err(&bundle->dev,
  54                        "pm_runtime_get_sync failed: %d\n", retval);
  55                pm_runtime_put_noidle(&bundle->dev);
  56                return retval;
  57        }
  58
  59        return 0;
  60}
  61
  62static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
  63{
  64        int retval;
  65
  66        pm_runtime_mark_last_busy(&bundle->dev);
  67        retval = pm_runtime_put_autosuspend(&bundle->dev);
  68
  69        return retval;
  70}
  71
  72static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle)
  73{
  74        pm_runtime_get_noresume(&bundle->dev);
  75}
  76
  77static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle)
  78{
  79        pm_runtime_put_noidle(&bundle->dev);
  80}
  81
  82#else
  83static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
  84{ return 0; }
  85static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
  86{ return 0; }
  87
  88static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) {}
  89static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) {}
  90#endif
  91
  92#endif /* __BUNDLE_H */
  93