v4.19.13 snapshot.
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
new file mode 100644
index 0000000..1a9f38f
--- /dev/null
+++ b/include/linux/platform_device.h
@@ -0,0 +1,373 @@
+/*
+ * platform_device.h - generic, centralized driver model
+ *
+ * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
+ *
+ * This file is released under the GPLv2
+ *
+ * See Documentation/driver-model/ for more information.
+ */
+
+#ifndef _PLATFORM_DEVICE_H_
+#define _PLATFORM_DEVICE_H_
+
+#include <linux/device.h>
+
+#define PLATFORM_DEVID_NONE (-1)
+#define PLATFORM_DEVID_AUTO (-2)
+
+struct mfd_cell;
+struct property_entry;
+struct platform_device_id;
+
+struct platform_device {
+ const char *name;
+ int id;
+ bool id_auto;
+ struct device dev;
+ u32 num_resources;
+ struct resource *resource;
+
+ const struct platform_device_id *id_entry;
+ char *driver_override; /* Driver name to force a match */
+
+ /* MFD cell pointer */
+ struct mfd_cell *mfd_cell;
+
+ /* arch specific additions */
+ struct pdev_archdata archdata;
+};
+
+#define platform_get_device_id(pdev) ((pdev)->id_entry)
+
+#define to_platform_device(x) container_of((x), struct platform_device, dev)
+
+extern int platform_device_register(struct platform_device *);
+extern void platform_device_unregister(struct platform_device *);
+
+extern struct bus_type platform_bus_type;
+extern struct device platform_bus;
+
+extern void arch_setup_pdev_archdata(struct platform_device *);
+extern struct resource *platform_get_resource(struct platform_device *,
+ unsigned int, unsigned int);
+extern int platform_get_irq(struct platform_device *, unsigned int);
+extern int platform_irq_count(struct platform_device *);
+extern struct resource *platform_get_resource_byname(struct platform_device *,
+ unsigned int,
+ const char *);
+extern int platform_get_irq_byname(struct platform_device *, const char *);
+extern int platform_add_devices(struct platform_device **, int);
+
+struct platform_device_info {
+ struct device *parent;
+ struct fwnode_handle *fwnode;
+
+ const char *name;
+ int id;
+
+ const struct resource *res;
+ unsigned int num_res;
+
+ const void *data;
+ size_t size_data;
+ u64 dma_mask;
+
+ struct property_entry *properties;
+};
+extern struct platform_device *platform_device_register_full(
+ const struct platform_device_info *pdevinfo);
+
+/**
+ * platform_device_register_resndata - add a platform-level device with
+ * resources and platform-specific data
+ *
+ * @parent: parent device for the device we're adding
+ * @name: base name of the device we're adding
+ * @id: instance id
+ * @res: set of resources that needs to be allocated for the device
+ * @num: number of resources
+ * @data: platform specific data for this platform device
+ * @size: size of platform specific data
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
+ */
+static inline struct platform_device *platform_device_register_resndata(
+ struct device *parent, const char *name, int id,
+ const struct resource *res, unsigned int num,
+ const void *data, size_t size) {
+
+ struct platform_device_info pdevinfo = {
+ .parent = parent,
+ .name = name,
+ .id = id,
+ .res = res,
+ .num_res = num,
+ .data = data,
+ .size_data = size,
+ .dma_mask = 0,
+ };
+
+ return platform_device_register_full(&pdevinfo);
+}
+
+/**
+ * platform_device_register_simple - add a platform-level device and its resources
+ * @name: base name of the device we're adding
+ * @id: instance id
+ * @res: set of resources that needs to be allocated for the device
+ * @num: number of resources
+ *
+ * This function creates a simple platform device that requires minimal
+ * resource and memory management. Canned release function freeing memory
+ * allocated for the device allows drivers using such devices to be
+ * unloaded without waiting for the last reference to the device to be
+ * dropped.
+ *
+ * This interface is primarily intended for use with legacy drivers which
+ * probe hardware directly. Because such drivers create sysfs device nodes
+ * themselves, rather than letting system infrastructure handle such device
+ * enumeration tasks, they don't fully conform to the Linux driver model.
+ * In particular, when such drivers are built as modules, they can't be
+ * "hotplugged".
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
+ */
+static inline struct platform_device *platform_device_register_simple(
+ const char *name, int id,
+ const struct resource *res, unsigned int num)
+{
+ return platform_device_register_resndata(NULL, name, id,
+ res, num, NULL, 0);
+}
+
+/**
+ * platform_device_register_data - add a platform-level device with platform-specific data
+ * @parent: parent device for the device we're adding
+ * @name: base name of the device we're adding
+ * @id: instance id
+ * @data: platform specific data for this platform device
+ * @size: size of platform specific data
+ *
+ * This function creates a simple platform device that requires minimal
+ * resource and memory management. Canned release function freeing memory
+ * allocated for the device allows drivers using such devices to be
+ * unloaded without waiting for the last reference to the device to be
+ * dropped.
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
+ */
+static inline struct platform_device *platform_device_register_data(
+ struct device *parent, const char *name, int id,
+ const void *data, size_t size)
+{
+ return platform_device_register_resndata(parent, name, id,
+ NULL, 0, data, size);
+}
+
+extern struct platform_device *platform_device_alloc(const char *name, int id);
+extern int platform_device_add_resources(struct platform_device *pdev,
+ const struct resource *res,
+ unsigned int num);
+extern int platform_device_add_data(struct platform_device *pdev,
+ const void *data, size_t size);
+extern int platform_device_add_properties(struct platform_device *pdev,
+ const struct property_entry *properties);
+extern int platform_device_add(struct platform_device *pdev);
+extern void platform_device_del(struct platform_device *pdev);
+extern void platform_device_put(struct platform_device *pdev);
+
+struct platform_driver {
+ int (*probe)(struct platform_device *);
+ int (*remove)(struct platform_device *);
+ void (*shutdown)(struct platform_device *);
+ int (*suspend)(struct platform_device *, pm_message_t state);
+ int (*resume)(struct platform_device *);
+ struct device_driver driver;
+ const struct platform_device_id *id_table;
+ bool prevent_deferred_probe;
+};
+
+#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
+ driver))
+
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE
+ */
+#define platform_driver_register(drv) \
+ __platform_driver_register(drv, THIS_MODULE)
+extern int __platform_driver_register(struct platform_driver *,
+ struct module *);
+extern void platform_driver_unregister(struct platform_driver *);
+
+/* non-hotpluggable platform devices may use this so that probe() and
+ * its support may live in __init sections, conserving runtime memory.
+ */
+#define platform_driver_probe(drv, probe) \
+ __platform_driver_probe(drv, probe, THIS_MODULE)
+extern int __platform_driver_probe(struct platform_driver *driver,
+ int (*probe)(struct platform_device *), struct module *module);
+
+static inline void *platform_get_drvdata(const struct platform_device *pdev)
+{
+ return dev_get_drvdata(&pdev->dev);
+}
+
+static inline void platform_set_drvdata(struct platform_device *pdev,
+ void *data)
+{
+ dev_set_drvdata(&pdev->dev, data);
+}
+
+/* module_platform_driver() - Helper macro for drivers that don't do
+ * anything special in module init/exit. This eliminates a lot of
+ * boilerplate. Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit()
+ */
+#define module_platform_driver(__platform_driver) \
+ module_driver(__platform_driver, platform_driver_register, \
+ platform_driver_unregister)
+
+/* builtin_platform_driver() - Helper macro for builtin drivers that
+ * don't do anything special in driver init. This eliminates some
+ * boilerplate. Each driver may only use this macro once, and
+ * calling it replaces device_initcall(). Note this is meant to be
+ * a parallel of module_platform_driver() above, but w/o _exit stuff.
+ */
+#define builtin_platform_driver(__platform_driver) \
+ builtin_driver(__platform_driver, platform_driver_register)
+
+/* module_platform_driver_probe() - Helper macro for drivers that don't do
+ * anything special in module init/exit. This eliminates a lot of
+ * boilerplate. Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit()
+ */
+#define module_platform_driver_probe(__platform_driver, __platform_probe) \
+static int __init __platform_driver##_init(void) \
+{ \
+ return platform_driver_probe(&(__platform_driver), \
+ __platform_probe); \
+} \
+module_init(__platform_driver##_init); \
+static void __exit __platform_driver##_exit(void) \
+{ \
+ platform_driver_unregister(&(__platform_driver)); \
+} \
+module_exit(__platform_driver##_exit);
+
+/* builtin_platform_driver_probe() - Helper macro for drivers that don't do
+ * anything special in device init. This eliminates some boilerplate. Each
+ * driver may only use this macro once, and using it replaces device_initcall.
+ * This is meant to be a parallel of module_platform_driver_probe above, but
+ * without the __exit parts.
+ */
+#define builtin_platform_driver_probe(__platform_driver, __platform_probe) \
+static int __init __platform_driver##_init(void) \
+{ \
+ return platform_driver_probe(&(__platform_driver), \
+ __platform_probe); \
+} \
+device_initcall(__platform_driver##_init); \
+
+#define platform_create_bundle(driver, probe, res, n_res, data, size) \
+ __platform_create_bundle(driver, probe, res, n_res, data, size, THIS_MODULE)
+extern struct platform_device *__platform_create_bundle(
+ struct platform_driver *driver, int (*probe)(struct platform_device *),
+ struct resource *res, unsigned int n_res,
+ const void *data, size_t size, struct module *module);
+
+int __platform_register_drivers(struct platform_driver * const *drivers,
+ unsigned int count, struct module *owner);
+void platform_unregister_drivers(struct platform_driver * const *drivers,
+ unsigned int count);
+
+#define platform_register_drivers(drivers, count) \
+ __platform_register_drivers(drivers, count, THIS_MODULE)
+
+/* early platform driver interface */
+struct early_platform_driver {
+ const char *class_str;
+ struct platform_driver *pdrv;
+ struct list_head list;
+ int requested_id;
+ char *buffer;
+ int bufsize;
+};
+
+#define EARLY_PLATFORM_ID_UNSET -2
+#define EARLY_PLATFORM_ID_ERROR -3
+
+extern int early_platform_driver_register(struct early_platform_driver *epdrv,
+ char *buf);
+extern void early_platform_add_devices(struct platform_device **devs, int num);
+
+static inline int is_early_platform_device(struct platform_device *pdev)
+{
+ return !pdev->dev.driver;
+}
+
+extern void early_platform_driver_register_all(char *class_str);
+extern int early_platform_driver_probe(char *class_str,
+ int nr_probe, int user_only);
+extern void early_platform_cleanup(void);
+
+#define early_platform_init(class_string, platdrv) \
+ early_platform_init_buffer(class_string, platdrv, NULL, 0)
+
+#ifndef MODULE
+#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
+static __initdata struct early_platform_driver early_driver = { \
+ .class_str = class_string, \
+ .buffer = buf, \
+ .bufsize = bufsiz, \
+ .pdrv = platdrv, \
+ .requested_id = EARLY_PLATFORM_ID_UNSET, \
+}; \
+static int __init early_platform_driver_setup_func(char *buffer) \
+{ \
+ return early_platform_driver_register(&early_driver, buffer); \
+} \
+early_param(class_string, early_platform_driver_setup_func)
+#else /* MODULE */
+#define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
+static inline char *early_platform_driver_setup_func(void) \
+{ \
+ return bufsiz ? buf : NULL; \
+}
+#endif /* MODULE */
+
+#ifdef CONFIG_SUSPEND
+extern int platform_pm_suspend(struct device *dev);
+extern int platform_pm_resume(struct device *dev);
+#else
+#define platform_pm_suspend NULL
+#define platform_pm_resume NULL
+#endif
+
+#ifdef CONFIG_HIBERNATE_CALLBACKS
+extern int platform_pm_freeze(struct device *dev);
+extern int platform_pm_thaw(struct device *dev);
+extern int platform_pm_poweroff(struct device *dev);
+extern int platform_pm_restore(struct device *dev);
+#else
+#define platform_pm_freeze NULL
+#define platform_pm_thaw NULL
+#define platform_pm_poweroff NULL
+#define platform_pm_restore NULL
+#endif
+
+extern int platform_dma_configure(struct device *dev);
+
+#ifdef CONFIG_PM_SLEEP
+#define USE_PLATFORM_PM_SLEEP_OPS \
+ .suspend = platform_pm_suspend, \
+ .resume = platform_pm_resume, \
+ .freeze = platform_pm_freeze, \
+ .thaw = platform_pm_thaw, \
+ .poweroff = platform_pm_poweroff, \
+ .restore = platform_pm_restore,
+#else
+#define USE_PLATFORM_PM_SLEEP_OPS
+#endif
+
+#endif /* _PLATFORM_DEVICE_H_ */