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