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path: root/drivers/staging/greybus/gbphy.h
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Diffstat (limited to 'drivers/staging/greybus/gbphy.h')
-rw-r--r--drivers/staging/greybus/gbphy.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/staging/greybus/gbphy.h b/drivers/staging/greybus/gbphy.h
new file mode 100644
index 000000000000..8ee68055ccc4
--- /dev/null
+++ b/drivers/staging/greybus/gbphy.h
@@ -0,0 +1,110 @@
+/*
+ * Greybus Bridged-Phy Bus driver
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * Released under the GPLv2 only.
+ */
+
+#ifndef __GBPHY_H
+#define __GBPHY_H
+
+struct gbphy_device {
+ u32 id;
+ struct greybus_descriptor_cport *cport_desc;
+ struct gb_bundle *bundle;
+ struct list_head list;
+ struct device dev;
+};
+#define to_gbphy_dev(d) container_of(d, struct gbphy_device, dev)
+
+static inline void *gb_gbphy_get_data(struct gbphy_device *gdev)
+{
+ return dev_get_drvdata(&gdev->dev);
+}
+
+static inline void gb_gbphy_set_data(struct gbphy_device *gdev, void *data)
+{
+ dev_set_drvdata(&gdev->dev, data);
+}
+
+struct gbphy_device_id {
+ __u8 protocol_id;
+};
+
+#define GBPHY_PROTOCOL(p) \
+ .protocol_id = (p),
+
+struct gbphy_driver {
+ const char *name;
+ int (*probe)(struct gbphy_device *,
+ const struct gbphy_device_id *id);
+ void (*remove)(struct gbphy_device *);
+ const struct gbphy_device_id *id_table;
+
+ struct device_driver driver;
+};
+#define to_gbphy_driver(d) container_of(d, struct gbphy_driver, driver)
+
+int gb_gbphy_register_driver(struct gbphy_driver *driver,
+ struct module *owner, const char *mod_name);
+void gb_gbphy_deregister_driver(struct gbphy_driver *driver);
+
+#define gb_gbphy_register(driver) \
+ gb_gbphy_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
+#define gb_gbphy_deregister(driver) \
+ gb_gbphy_deregister_driver(driver)
+
+/**
+ * module_gbphy_driver() - Helper macro for registering a gbphy driver
+ * @__gbphy_driver: gbphy_driver structure
+ *
+ * Helper macro for gbphy drivers to set up proper module init / exit
+ * functions. Replaces module_init() and module_exit() and keeps people from
+ * printing pointless things to the kernel log when their driver is loaded.
+ */
+#define module_gbphy_driver(__gbphy_driver) \
+ module_driver(__gbphy_driver, gb_gbphy_register, gb_gbphy_deregister)
+
+#ifdef CONFIG_PM
+static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev)
+{
+ struct device *dev = &gbphy_dev->dev;
+ int ret;
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0) {
+ dev_err(dev, "pm_runtime_get_sync failed: %d\n", ret);
+ pm_runtime_put_noidle(dev);
+ return ret;
+ }
+
+ return 0;
+}
+
+static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev)
+{
+ struct device *dev = &gbphy_dev->dev;
+
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+}
+
+static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev)
+{
+ pm_runtime_get_noresume(&gbphy_dev->dev);
+}
+
+static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev)
+{
+ pm_runtime_put_noidle(&gbphy_dev->dev);
+}
+#else
+static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) { return 0; }
+static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) {}
+static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) {}
+static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev) {}
+#endif
+
+#endif /* __GBPHY_H */
+