v4.19.13 snapshot.
diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
new file mode 100644
index 0000000..24def6a
--- /dev/null
+++ b/include/linux/nvmem-provider.h
@@ -0,0 +1,116 @@
+/*
+ * nvmem framework provider.
+ *
+ * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+ * Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef _LINUX_NVMEM_PROVIDER_H
+#define _LINUX_NVMEM_PROVIDER_H
+
+#include <linux/err.h>
+#include <linux/errno.h>
+
+struct nvmem_device;
+struct nvmem_cell_info;
+typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
+ void *val, size_t bytes);
+typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
+ void *val, size_t bytes);
+
+/**
+ * struct nvmem_config - NVMEM device configuration
+ *
+ * @dev: Parent device.
+ * @name: Optional name.
+ * @id: Optional device ID used in full name. Ignored if name is NULL.
+ * @owner: Pointer to exporter module. Used for refcounting.
+ * @cells: Optional array of pre-defined NVMEM cells.
+ * @ncells: Number of elements in cells.
+ * @read_only: Device is read-only.
+ * @root_only: Device is accessibly to root only.
+ * @reg_read: Callback to read data.
+ * @reg_write: Callback to write data.
+ * @size: Device size.
+ * @word_size: Minimum read/write access granularity.
+ * @stride: Minimum read/write access stride.
+ * @priv: User context passed to read/write callbacks.
+ *
+ * Note: A default "nvmem<id>" name will be assigned to the device if
+ * no name is specified in its configuration. In such case "<id>" is
+ * generated with ida_simple_get() and provided id field is ignored.
+ *
+ * Note: Specifying name and setting id to -1 implies a unique device
+ * whose name is provided as-is (kept unaltered).
+ */
+struct nvmem_config {
+ struct device *dev;
+ const char *name;
+ int id;
+ struct module *owner;
+ const struct nvmem_cell_info *cells;
+ int ncells;
+ bool read_only;
+ bool root_only;
+ nvmem_reg_read_t reg_read;
+ nvmem_reg_write_t reg_write;
+ int size;
+ int word_size;
+ int stride;
+ void *priv;
+ /* To be only used by old driver/misc/eeprom drivers */
+ bool compat;
+ struct device *base_dev;
+};
+
+#if IS_ENABLED(CONFIG_NVMEM)
+
+struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
+int nvmem_unregister(struct nvmem_device *nvmem);
+
+struct nvmem_device *devm_nvmem_register(struct device *dev,
+ const struct nvmem_config *cfg);
+
+int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem);
+
+int nvmem_add_cells(struct nvmem_device *nvmem,
+ const struct nvmem_cell_info *info,
+ int ncells);
+#else
+
+static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline int nvmem_unregister(struct nvmem_device *nvmem)
+{
+ return -ENOSYS;
+}
+
+static inline struct nvmem_device *
+devm_nvmem_register(struct device *dev, const struct nvmem_config *c)
+{
+ return nvmem_register(c);
+}
+
+static inline int
+devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
+{
+ return nvmem_unregister(nvmem);
+
+}
+
+static inline int nvmem_add_cells(struct nvmem_device *nvmem,
+ const struct nvmem_cell_info *info,
+ int ncells)
+{
+ return -ENOSYS;
+}
+
+#endif /* CONFIG_NVMEM */
+#endif /* ifndef _LINUX_NVMEM_PROVIDER_H */