1 files changed, 0 insertions, 349 deletions
diff --git a/drivers/staging/greybus/core.c b/drivers/staging/greybus/core.c
deleted file mode 100644
index e546c6431877..000000000000
--- a/drivers/staging/greybus/core.c
+++ /dev/null
@@ -1,349 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Greybus "Core"
- *
- * Copyright 2014-2015 Google Inc.
- * Copyright 2014-2015 Linaro Ltd.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define CREATE_TRACE_POINTS
-#include <linux/greybus.h>
-#include "greybus_trace.h"
-
-#define GB_BUNDLE_AUTOSUSPEND_MS	3000
-
-/* Allow greybus to be disabled at boot if needed */
-static bool nogreybus;
-#ifdef MODULE
-module_param(nogreybus, bool, 0444);
-#else
-core_param(nogreybus, nogreybus, bool, 0444);
-#endif
-int greybus_disabled(void)
-{
-	return nogreybus;
-}
-EXPORT_SYMBOL_GPL(greybus_disabled);
-
-static bool greybus_match_one_id(struct gb_bundle *bundle,
-				 const struct greybus_bundle_id *id)
-{
-	if ((id->match_flags & GREYBUS_ID_MATCH_VENDOR) &&
-	    (id->vendor != bundle->intf->vendor_id))
-		return false;
-
-	if ((id->match_flags & GREYBUS_ID_MATCH_PRODUCT) &&
-	    (id->product != bundle->intf->product_id))
-		return false;
-
-	if ((id->match_flags & GREYBUS_ID_MATCH_CLASS) &&
-	    (id->class != bundle->class))
-		return false;
-
-	return true;
-}
-
-static const struct greybus_bundle_id *
-greybus_match_id(struct gb_bundle *bundle, const struct greybus_bundle_id *id)
-{
-	if (!id)
-		return NULL;
-
-	for (; id->vendor || id->product || id->class || id->driver_info;
-									id++) {
-		if (greybus_match_one_id(bundle, id))
-			return id;
-	}
-
-	return NULL;
-}
-
-static int greybus_match_device(struct device *dev, struct device_driver *drv)
-{
-	struct greybus_driver *driver = to_greybus_driver(drv);
-	struct gb_bundle *bundle;
-	const struct greybus_bundle_id *id;
-
-	if (!is_gb_bundle(dev))
-		return 0;
-
-	bundle = to_gb_bundle(dev);
-
-	id = greybus_match_id(bundle, driver->id_table);
-	if (id)
-		return 1;
-	/* FIXME - Dynamic ids? */
-	return 0;
-}
-
-static int greybus_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
-	struct gb_host_device *hd;
-	struct gb_module *module = NULL;
-	struct gb_interface *intf = NULL;
-	struct gb_control *control = NULL;
-	struct gb_bundle *bundle = NULL;
-	struct gb_svc *svc = NULL;
-
-	if (is_gb_host_device(dev)) {
-		hd = to_gb_host_device(dev);
-	} else if (is_gb_module(dev)) {
-		module = to_gb_module(dev);
-		hd = module->hd;
-	} else if (is_gb_interface(dev)) {
-		intf = to_gb_interface(dev);
-		module = intf->module;
-		hd = intf->hd;
-	} else if (is_gb_control(dev)) {
-		control = to_gb_control(dev);
-		intf = control->intf;
-		module = intf->module;
-		hd = intf->hd;
-	} else if (is_gb_bundle(dev)) {
-		bundle = to_gb_bundle(dev);
-		intf = bundle->intf;
-		module = intf->module;
-		hd = intf->hd;
-	} else if (is_gb_svc(dev)) {
-		svc = to_gb_svc(dev);
-		hd = svc->hd;
-	} else {
-		dev_WARN(dev, "uevent for unknown greybus device \"type\"!\n");
-		return -EINVAL;
-	}
-
-	if (add_uevent_var(env, "BUS=%u", hd->bus_id))
-		return -ENOMEM;
-
-	if (module) {
-		if (add_uevent_var(env, "MODULE=%u", module->module_id))
-			return -ENOMEM;
-	}
-
-	if (intf) {
-		if (add_uevent_var(env, "INTERFACE=%u", intf->interface_id))
-			return -ENOMEM;
-		if (add_uevent_var(env, "GREYBUS_ID=%08x/%08x",
-				   intf->vendor_id, intf->product_id))
-			return -ENOMEM;
-	}
-
-	if (bundle) {
-		// FIXME
-		// add a uevent that can "load" a bundle type
-		// This is what we need to bind a driver to so use the info
-		// in gmod here as well
-
-		if (add_uevent_var(env, "BUNDLE=%u", bundle->id))
-			return -ENOMEM;
-		if (add_uevent_var(env, "BUNDLE_CLASS=%02x", bundle->class))
-			return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static void greybus_shutdown(struct device *dev)
-{
-	if (is_gb_host_device(dev)) {
-		struct gb_host_device *hd;
-
-		hd = to_gb_host_device(dev);
-		gb_hd_shutdown(hd);
-	}
-}
-
-struct bus_type greybus_bus_type = {
-	.name =		"greybus",
-	.match =	greybus_match_device,
-	.uevent =	greybus_uevent,
-	.shutdown =	greybus_shutdown,
-};
-
-static int greybus_probe(struct device *dev)
-{
-	struct greybus_driver *driver = to_greybus_driver(dev->driver);
-	struct gb_bundle *bundle = to_gb_bundle(dev);
-	const struct greybus_bundle_id *id;
-	int retval;
-
-	/* match id */
-	id = greybus_match_id(bundle, driver->id_table);
-	if (!id)
-		return -ENODEV;
-
-	retval = pm_runtime_get_sync(&bundle->intf->dev);
-	if (retval < 0) {
-		pm_runtime_put_noidle(&bundle->intf->dev);
-		return retval;
-	}
-
-	retval = gb_control_bundle_activate(bundle->intf->control, bundle->id);
-	if (retval) {
-		pm_runtime_put(&bundle->intf->dev);
-		return retval;
-	}
-
-	/*
-	 * Unbound bundle devices are always deactivated. During probe, the
-	 * Runtime PM is set to enabled and active and the usage count is
-	 * incremented. If the driver supports runtime PM, it should call
-	 * pm_runtime_put() in its probe routine and pm_runtime_get_sync()
-	 * in remove routine.
-	 */
-	pm_runtime_set_autosuspend_delay(dev, GB_BUNDLE_AUTOSUSPEND_MS);
-	pm_runtime_use_autosuspend(dev);
-	pm_runtime_get_noresume(dev);
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-
-	retval = driver->probe(bundle, id);
-	if (retval) {
-		/*
-		 * Catch buggy drivers that fail to destroy their connections.
-		 */
-		WARN_ON(!list_empty(&bundle->connections));
-
-		gb_control_bundle_deactivate(bundle->intf->control, bundle->id);
-
-		pm_runtime_disable(dev);
-		pm_runtime_set_suspended(dev);
-		pm_runtime_put_noidle(dev);
-		pm_runtime_dont_use_autosuspend(dev);
-		pm_runtime_put(&bundle->intf->dev);
-
-		return retval;
-	}
-
-	pm_runtime_put(&bundle->intf->dev);
-
-	return 0;
-}
-
-static int greybus_remove(struct device *dev)
-{
-	struct greybus_driver *driver = to_greybus_driver(dev->driver);
-	struct gb_bundle *bundle = to_gb_bundle(dev);
-	struct gb_connection *connection;
-	int retval;
-
-	retval = pm_runtime_get_sync(dev);
-	if (retval < 0)
-		dev_err(dev, "failed to resume bundle: %d\n", retval);
-
-	/*
-	 * Disable (non-offloaded) connections early in case the interface is
-	 * already gone to avoid unceccessary operation timeouts during
-	 * driver disconnect. Otherwise, only disable incoming requests.
-	 */
-	list_for_each_entry(connection, &bundle->connections, bundle_links) {
-		if (gb_connection_is_offloaded(connection))
-			continue;
-
-		if (bundle->intf->disconnected)
-			gb_connection_disable_forced(connection);
-		else
-			gb_connection_disable_rx(connection);
-	}
-
-	driver->disconnect(bundle);
-
-	/* Catch buggy drivers that fail to destroy their connections. */
-	WARN_ON(!list_empty(&bundle->connections));
-
-	if (!bundle->intf->disconnected)
-		gb_control_bundle_deactivate(bundle->intf->control, bundle->id);
-
-	pm_runtime_put_noidle(dev);
-	pm_runtime_disable(dev);
-	pm_runtime_set_suspended(dev);
-	pm_runtime_dont_use_autosuspend(dev);
-	pm_runtime_put_noidle(dev);
-
-	return 0;
-}
-
-int greybus_register_driver(struct greybus_driver *driver, struct module *owner,
-			    const char *mod_name)
-{
-	int retval;
-
-	if (greybus_disabled())
-		return -ENODEV;
-
-	driver->driver.bus = &greybus_bus_type;
-	driver->driver.name = driver->name;
-	driver->driver.probe = greybus_probe;
-	driver->driver.remove = greybus_remove;
-	driver->driver.owner = owner;
-	driver->driver.mod_name = mod_name;
-
-	retval = driver_register(&driver->driver);
-	if (retval)
-		return retval;
-
-	pr_info("registered new driver %s\n", driver->name);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(greybus_register_driver);
-
-void greybus_deregister_driver(struct greybus_driver *driver)
-{
-	driver_unregister(&driver->driver);
-}
-EXPORT_SYMBOL_GPL(greybus_deregister_driver);
-
-static int __init gb_init(void)
-{
-	int retval;
-
-	if (greybus_disabled())
-		return -ENODEV;
-
-	BUILD_BUG_ON(CPORT_ID_MAX >= (long)CPORT_ID_BAD);
-
-	gb_debugfs_init();
-
-	retval = bus_register(&greybus_bus_type);
-	if (retval) {
-		pr_err("bus_register failed (%d)\n", retval);
-		goto error_bus;
-	}
-
-	retval = gb_hd_init();
-	if (retval) {
-		pr_err("gb_hd_init failed (%d)\n", retval);
-		goto error_hd;
-	}
-
-	retval = gb_operation_init();
-	if (retval) {
-		pr_err("gb_operation_init failed (%d)\n", retval);
-		goto error_operation;
-	}
-	return 0;	/* Success */
-
-error_operation:
-	gb_hd_exit();
-error_hd:
-	bus_unregister(&greybus_bus_type);
-error_bus:
-	gb_debugfs_cleanup();
-
-	return retval;
-}
-module_init(gb_init);
-
-static void __exit gb_exit(void)
-{
-	gb_operation_exit();
-	gb_hd_exit();
-	bus_unregister(&greybus_bus_type);
-	gb_debugfs_cleanup();
-	tracepoint_synchronize_unregister();
-}
-module_exit(gb_exit);
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");