/* SPDX-License-Identifier: GPL-2.0-only *//* * The On Chip Memory (OCMEM) allocator allows various clients to allocate * memory from OCMEM based on performance, latency and power requirements. * This is typically used by the GPU, camera/video, and audio components on * some Snapdragon SoCs. * * Copyright (C) 2019 Brian Masney <masneyb@onstation.org> * Copyright (C) 2015 Red Hat. Author: Rob Clark <robdclark@gmail.com> */ #include <linux/device.h>#include <linux/err.h> #ifndef __OCMEM_H__#define __OCMEM_H__ enum ocmem_client {	/* GMEM clients */	OCMEM_GRAPHICS = 0x0,	/*	 * TODO add more once ocmem_allocate() is clever enough to	 * deal with multiple clients.	 */	OCMEM_CLIENT_MAX,}; struct ocmem; struct ocmem_buf {	unsigned long offset;	unsigned long addr;	unsigned long len;}; #if IS_ENABLED(CONFIG_QCOM_OCMEM) struct ocmem *of_get_ocmem(struct device *dev);struct ocmem_buf *ocmem_allocate(struct ocmem *ocmem, enum ocmem_client client,				 unsigned long size);void ocmem_free(struct ocmem *ocmem, enum ocmem_client client,		struct ocmem_buf *buf); #else /* IS_ENABLED(CONFIG_QCOM_OCMEM) */ static inline struct ocmem *of_get_ocmem(struct device *dev){	return ERR_PTR(-ENODEV);} static inline struct ocmem_buf *ocmem_allocate(struct ocmem *ocmem,					       enum ocmem_client client,					       unsigned long size){	return ERR_PTR(-ENODEV);} static inline void ocmem_free(struct ocmem *ocmem, enum ocmem_client client,			      struct ocmem_buf *buf){} #endif /* IS_ENABLED(CONFIG_QCOM_OCMEM) */ #endif /* __OCMEM_H__ */