drivers/staging/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  * Released under the GPLv2 only.
   9  */
  10
  11 #ifndef __BUNDLE_H
  12 #define __BUNDLE_H
  13
  14 #include <linux/list.h>
  15
  16 #define BUNDLE_ID_NONE  U8_MAX
  17
  18 /* Greybus "public" definitions" */
  19 struct gb_bundle {
  20         struct device           dev;
  21         struct gb_interface     *intf;
  22
  23         u8                      id;
  24         u8                      class;
  25         u8                      class_major;
  26         u8                      class_minor;
  27
  28         size_t                  num_cports;
  29         struct greybus_descriptor_cport *cport_desc;
  30
  31         struct list_head        connections;
  32         u8                      *state;
  33
  34         struct list_head        links;  /* interface->bundles */
  35 };
  36 #define to_gb_bundle(d) container_of(d, struct gb_bundle, dev)
  37
  38 /* Greybus "private" definitions" */
  39 struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
  40                                    u8 class);
  41 int gb_bundle_add(struct gb_bundle *bundle);
  42 void gb_bundle_destroy(struct gb_bundle *bundle);
  43
  44 /* Bundle Runtime PM wrappers */
  45 #ifdef CONFIG_PM
  46 static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
  47 {
  48         int retval;
  49
  50         retval = pm_runtime_get_sync(&bundle->dev);
  51         if (retval < 0) {
  52                 dev_err(&bundle->dev,
  53                         "pm_runtime_get_sync failed: %d\n", retval);
  54                 pm_runtime_put_noidle(&bundle->dev);
  55                 return retval;
  56         }
  57
  58         return 0;
  59 }
  60
  61 static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
  62 {
  63         int retval;
  64
  65         pm_runtime_mark_last_busy(&bundle->dev);
  66         retval = pm_runtime_put_autosuspend(&bundle->dev);
  67
  68         return retval;
  69 }
  70
  71 static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle)
  72 {
  73         pm_runtime_get_noresume(&bundle->dev);
  74 }
  75
  76 static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle)
  77 {
  78         pm_runtime_put_noidle(&bundle->dev);
  79 }
  80
  81 #else
  82 static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
  83 { return 0; }
  84 static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
  85 { return 0; }
  86
  87 static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) {}
  88 static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) {}
  89 #endif
  90
  91 #endif /* __BUNDLE_H */