linux/greybus/bundle.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Greybus bundles
0004  *
0005  * Copyright 2014 Google Inc.
0006  * Copyright 2014 Linaro Ltd.
0007  */
0008
0009 #ifndef __BUNDLE_H
0010 #define __BUNDLE_H
0011
0012 #include <linux/types.h>
0013 #include <linux/list.h>
0014 #include <linux/pm_runtime.h>
0015 #include <linux/device.h>
0016
0017 #define BUNDLE_ID_NONE  U8_MAX
0018
0019 /* Greybus "public" definitions" */
0020 struct gb_bundle {
0021     struct device       dev;
0022     struct gb_interface *intf;
0023
0024     u8          id;
0025     u8          class;
0026     u8          class_major;
0027     u8          class_minor;
0028
0029     size_t          num_cports;
0030     struct greybus_descriptor_cport *cport_desc;
0031
0032     struct list_head    connections;
0033     u8          *state;
0034
0035     struct list_head    links;  /* interface->bundles */
0036 };
0037 #define to_gb_bundle(d) container_of(d, struct gb_bundle, dev)
0038
0039 /* Greybus "private" definitions" */
0040 struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
0041                    u8 class);
0042 int gb_bundle_add(struct gb_bundle *bundle);
0043 void gb_bundle_destroy(struct gb_bundle *bundle);
0044
0045 /* Bundle Runtime PM wrappers */
0046 #ifdef CONFIG_PM
0047 static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
0048 {
0049     int retval;
0050
0051     retval = pm_runtime_get_sync(&bundle->dev);
0052     if (retval < 0) {
0053         dev_err(&bundle->dev,
0054             "pm_runtime_get_sync failed: %d\n", retval);
0055         pm_runtime_put_noidle(&bundle->dev);
0056         return retval;
0057     }
0058
0059     return 0;
0060 }
0061
0062 static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
0063 {
0064     int retval;
0065
0066     pm_runtime_mark_last_busy(&bundle->dev);
0067     retval = pm_runtime_put_autosuspend(&bundle->dev);
0068
0069     return retval;
0070 }
0071
0072 static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle)
0073 {
0074     pm_runtime_get_noresume(&bundle->dev);
0075 }
0076
0077 static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle)
0078 {
0079     pm_runtime_put_noidle(&bundle->dev);
0080 }
0081
0082 #else
0083 static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle)
0084 { return 0; }
0085 static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle)
0086 { return 0; }
0087
0088 static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) {}
0089 static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) {}
0090 #endif
0091
0092 #endif /* __BUNDLE_H */