Merge tag 'staging-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO driver updates from Greg KH:
 "Here is the big staging/iio driver update for 5.4-rc1.

  Lots of churn here, with a few driver/filesystems moving out of
  staging finally:

     - erofs moved out of staging

     - greybus core code moved out of staging

  Along with that, a new filesytem has been added:

     - extfat

  to provide support for those devices requiring that filesystem (i.e.
  transfer devices to/from windows systems or printers)

  Other than that, there a number of new IIO drivers, and lots and lots
  and lots of staging driver cleanups and minor fixes as people continue
  to dig into those for easy changes.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (453 commits)
  Staging: gasket: Use temporaries to reduce line length.
  Staging: octeon: Avoid several usecases of strcpy
  staging: vhciq_core: replace snprintf with scnprintf
  staging: wilc1000: avoid twice IRQ handler execution for each single interrupt
  staging: wilc1000: remove unused interrupt status handling code
  staging: fbtft: make several arrays static const, makes object smaller
  staging: rtl8188eu: make two arrays static const, makes object smaller
  staging: rtl8723bs: core: Remove Macro "IS_MAC_ADDRESS_BROADCAST"
  dt-bindings: anybus-controller: move to staging/ tree
  staging: emxx_udc: remove local TRUE/FALSE definition
  staging: wilc1000: look for rtc_clk clock
  staging: dt-bindings: wilc1000: add optional rtc_clk property
  staging: nvec: make use of devm_platform_ioremap_resource
  staging: exfat: drop unused function parameter
  Staging: exfat: Avoid use of strcpy
  staging: exfat: use integer constants
  staging: exfat: cleanup spacing for casts
  staging: exfat: cleanup spacing for operators
  staging: rtl8723bs: hal: remove redundant variable n
  staging: pi433: Fix typo in documentation
  ...

1 files changed, 152 insertions, 0 deletions

diff --git a/include/linux/greybus.h b/include/linux/greybus.h
new file mode 100644
index 000000000000..18c0fb958b74
--- /dev/null
+++ b/include/linux/greybus.h
@@ -0,0 +1,152 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Greybus driver and device API
+ *
+ * Copyright 2014-2015 Google Inc.
+ * Copyright 2014-2015 Linaro Ltd.
+ */
+
+#ifndef __LINUX_GREYBUS_H
+#define __LINUX_GREYBUS_H
+
+#ifdef __KERNEL__
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/idr.h>
+
+#include <linux/greybus/greybus_id.h>
+#include <linux/greybus/greybus_manifest.h>
+#include <linux/greybus/greybus_protocols.h>
+#include <linux/greybus/manifest.h>
+#include <linux/greybus/hd.h>
+#include <linux/greybus/svc.h>
+#include <linux/greybus/control.h>
+#include <linux/greybus/module.h>
+#include <linux/greybus/interface.h>
+#include <linux/greybus/bundle.h>
+#include <linux/greybus/connection.h>
+#include <linux/greybus/operation.h>
+
+/* Matches up with the Greybus Protocol specification document */
+#define GREYBUS_VERSION_MAJOR	0x00
+#define GREYBUS_VERSION_MINOR	0x01
+
+#define GREYBUS_ID_MATCH_DEVICE \
+	(GREYBUS_ID_MATCH_VENDOR | GREYBUS_ID_MATCH_PRODUCT)
+
+#define GREYBUS_DEVICE(v, p)					\
+	.match_flags	= GREYBUS_ID_MATCH_DEVICE,		\
+	.vendor		= (v),					\
+	.product	= (p),
+
+#define GREYBUS_DEVICE_CLASS(c)					\
+	.match_flags	= GREYBUS_ID_MATCH_CLASS,		\
+	.class		= (c),
+
+/* Maximum number of CPorts */
+#define CPORT_ID_MAX	4095		/* UniPro max id is 4095 */
+#define CPORT_ID_BAD	U16_MAX
+
+struct greybus_driver {
+	const char *name;
+
+	int (*probe)(struct gb_bundle *bundle,
+		     const struct greybus_bundle_id *id);
+	void (*disconnect)(struct gb_bundle *bundle);
+
+	const struct greybus_bundle_id *id_table;
+
+	struct device_driver driver;
+};
+#define to_greybus_driver(d) container_of(d, struct greybus_driver, driver)
+
+static inline void greybus_set_drvdata(struct gb_bundle *bundle, void *data)
+{
+	dev_set_drvdata(&bundle->dev, data);
+}
+
+static inline void *greybus_get_drvdata(struct gb_bundle *bundle)
+{
+	return dev_get_drvdata(&bundle->dev);
+}
+
+/* Don't call these directly, use the module_greybus_driver() macro instead */
+int greybus_register_driver(struct greybus_driver *driver,
+			    struct module *module, const char *mod_name);
+void greybus_deregister_driver(struct greybus_driver *driver);
+
+/* define to get proper THIS_MODULE and KBUILD_MODNAME values */
+#define greybus_register(driver) \
+	greybus_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
+#define greybus_deregister(driver) \
+	greybus_deregister_driver(driver)
+
+/**
+ * module_greybus_driver() - Helper macro for registering a Greybus driver
+ * @__greybus_driver: greybus_driver structure
+ *
+ * Helper macro for Greybus 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_greybus_driver(__greybus_driver)	\
+	module_driver(__greybus_driver, greybus_register, greybus_deregister)
+
+int greybus_disabled(void);
+
+void gb_debugfs_init(void);
+void gb_debugfs_cleanup(void);
+struct dentry *gb_debugfs_get(void);
+
+extern struct bus_type greybus_bus_type;
+
+extern struct device_type greybus_hd_type;
+extern struct device_type greybus_module_type;
+extern struct device_type greybus_interface_type;
+extern struct device_type greybus_control_type;
+extern struct device_type greybus_bundle_type;
+extern struct device_type greybus_svc_type;
+
+static inline int is_gb_host_device(const struct device *dev)
+{
+	return dev->type == &greybus_hd_type;
+}
+
+static inline int is_gb_module(const struct device *dev)
+{
+	return dev->type == &greybus_module_type;
+}
+
+static inline int is_gb_interface(const struct device *dev)
+{
+	return dev->type == &greybus_interface_type;
+}
+
+static inline int is_gb_control(const struct device *dev)
+{
+	return dev->type == &greybus_control_type;
+}
+
+static inline int is_gb_bundle(const struct device *dev)
+{
+	return dev->type == &greybus_bundle_type;
+}
+
+static inline int is_gb_svc(const struct device *dev)
+{
+	return dev->type == &greybus_svc_type;
+}
+
+static inline bool cport_id_valid(struct gb_host_device *hd, u16 cport_id)
+{
+	return cport_id != CPORT_ID_BAD && cport_id < hd->num_cports;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __LINUX_GREYBUS_H */