shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 10:58:48 +09:00
Code Issues Packages Projects Releases Wiki Activity

dma-buf: rk_heaps: refactor code

Browse Source 
Make APIs and structure only visible in rk_heaps ranges

Change-Id: I396f6dc47210591647f52a2247abc969bb826245
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue
2022-03-15 14:56:50 +08:00
committed by Tao Huang
parent 1b79a4684c
commit d647ce0460
4 changed files with 267 additions and 352 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/dma-buf/rk_heaps/rk-cma-heap.c
View File

@@ -15,7 +15,6 @@
#include <linux/cma.h>
#include <linux/dma-buf.h>
#include <linux/rk-dma-heap.h>
#include <linux/dma-map-ops.h>
#include <linux/err.h>
#include <linux/highmem.h>
@@ -27,6 +26,8 @@
#include <linux/vmalloc.h>
#include <uapi/linux/rk-dma-heap.h>
#include "rk-dma-heap.h"
struct rk_dma_heap_attachment {
struct device *dev;
struct sg_table table;

18
drivers/dma-buf/rk_heaps/rk-dma-heap.c
View File

@@ -25,6 +25,8 @@
#include <linux/rk-dma-heap.h>
#include <uapi/linux/rk-dma-heap.h>
#include "rk-dma-heap.h"
#define DEVNAME "rk_dma_heap"
#define NUM_HEAP_MINORS 128
@@ -89,7 +91,6 @@ struct cma *rk_dma_heap_get_cma(void)
{
return rk_dma_heap_cma;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_get_cma);
static int rk_vmap_pfn_apply(pte_t *pte, unsigned long addr, void *private)
{
@@ -115,7 +116,6 @@ void *rk_vmap_contig_pfn(unsigned long pfn, unsigned int count, pgprot_t prot)
}
return area->addr;
}
EXPORT_SYMBOL_GPL(rk_vmap_contig_pfn);
int rk_dma_heap_set_dev(struct device *heap_dev)
{
@@ -143,7 +143,6 @@ int rk_dma_heap_set_dev(struct device *heap_dev)
return 0;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_set_dev);
struct rk_dma_heap *rk_dma_heap_find(const char *name)
{
@@ -160,13 +159,11 @@ struct rk_dma_heap *rk_dma_heap_find(const char *name)
mutex_unlock(&rk_heap_list_lock);
return NULL;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_find);
void rk_dma_heap_buffer_free(struct dma_buf *dmabuf)
{
dma_buf_put(dmabuf);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_buffer_free);
struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
@@ -188,7 +185,6 @@ struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
return heap->ops->allocate(heap, len, fd_flags, heap_flags, name);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_buffer_alloc);
int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
@@ -212,7 +208,6 @@ int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
return fd;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_bufferfd_alloc);
struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name)
@@ -228,7 +223,6 @@ struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
return heap->ops->alloc_contig_pages(heap, len, name);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_alloc_contig_pages);
void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
struct page *pages, size_t len,
@@ -241,7 +235,6 @@ void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
return heap->ops->free_contig_pages(heap, pages, len, name);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_free_contig_pages);
void rk_dma_heap_total_inc(struct rk_dma_heap *heap, size_t len)
{
@@ -249,7 +242,6 @@ void rk_dma_heap_total_inc(struct rk_dma_heap *heap, size_t len)
heap->total_size += len;
mutex_unlock(&rk_heap_list_lock);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_total_inc);
void rk_dma_heap_total_dec(struct rk_dma_heap *heap, size_t len)
{
@@ -260,7 +252,6 @@ void rk_dma_heap_total_dec(struct rk_dma_heap *heap, size_t len)
heap->total_size -= len;
mutex_unlock(&rk_heap_list_lock);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_total_dec);
static int rk_dma_heap_open(struct inode *inode, struct file *file)
{
@@ -382,7 +373,6 @@ void *rk_dma_heap_get_drvdata(struct rk_dma_heap *heap)
{
return heap->priv;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_get_drvdata);
static void rk_dma_heap_release(struct kref *ref)
{
@@ -409,7 +399,6 @@ void rk_dma_heap_put(struct rk_dma_heap *h)
kref_put(&h->refcount, rk_dma_heap_release);
mutex_unlock(&rk_heap_list_lock);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_put);
/**
* rk_dma_heap_get_dev() - get device struct for the heap
@@ -422,7 +411,6 @@ struct device *rk_dma_heap_get_dev(struct rk_dma_heap *heap)
{
return heap->heap_dev;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_get_dev);
/**
* rk_dma_heap_get_name() - get heap name
@@ -435,7 +423,6 @@ const char *rk_dma_heap_get_name(struct rk_dma_heap *heap)
{
return heap->name;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_get_name);
struct rk_dma_heap *rk_dma_heap_add(const struct rk_dma_heap_export_info *exp_info)
{
@@ -525,7 +512,6 @@ err0:
kfree(heap);
return err_ret;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_add);
static char *rk_dma_heap_devnode(struct device *dev, umode_t *mode)
{

263
drivers/dma-buf/rk_heaps/rk-dma-heap.h Normal file
View File

@@ -0,0 +1,263 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* DMABUF Heaps Allocation Infrastructure
*
* Copyright (C) 2011 Google, Inc.
* Copyright (C) 2019 Linaro Ltd.
* Copyright (C) 2022 Rockchip Electronics Co. Ltd.
* Author: Simon Xue <xxm@rock-chips.com>
*/
#ifndef _RK_DMA_HEAPS_H
#define _RK_DMA_HEAPS_H
#include <linux/cdev.h>
#include <linux/types.h>
#include <linux/dma-buf.h>
#if defined(CONFIG_DMABUF_RK_HEAPS_DEBUG)
#define dma_heap_print(fmt, ...) \
printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#else
#define dma_heap_print(fmt, ...) \
no_printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#endif
#define RK_DMA_HEAP_NAME_LEN 16
struct rk_cma_heap {
struct rk_dma_heap *heap;
struct cma *cma;
};
struct rk_cma_heap_buffer {
struct rk_cma_heap *heap;
struct list_head attachments;
struct mutex lock;
unsigned long len;
struct page *cma_pages;
struct page **pages;
pgoff_t pagecount;
int vmap_cnt;
void *vaddr;
phys_addr_t phys;
bool attached;
};
struct rk_vmap_pfn_data {
unsigned long pfn; /* first pfn of contiguous */
pgprot_t prot;
};
/**
* struct rk_dma_heap_ops - ops to operate on a given heap
* @allocate: allocate dmabuf and return struct dma_buf ptr
* @get_pool_size: if heap maintains memory pools, get pool size in bytes
*
* allocate returns dmabuf on success, ERR_PTR(-errno) on error.
*/
struct rk_dma_heap_ops {
struct dma_buf *(*allocate)(struct rk_dma_heap *heap,
unsigned long len,
unsigned long fd_flags,
unsigned long heap_flags,
const char *name);
struct page *(*alloc_contig_pages)(struct rk_dma_heap *heap,
size_t len, const char *name);
void (*free_contig_pages)(struct rk_dma_heap *heap,
struct page *pages, size_t len,
const char *name);
long (*get_pool_size)(struct rk_dma_heap *heap);
};
/**
* struct rk_dma_heap_export_info - information needed to export a new dmabuf heap
* @name: used for debugging/device-node name
* @ops: ops struct for this heap
* @priv: heap exporter private data
*
* Information needed to export a new dmabuf heap.
*/
struct rk_dma_heap_export_info {
const char *name;
const struct rk_dma_heap_ops *ops;
void *priv;
bool support_cma;
};
/**
* struct rk_dma_heap - represents a dmabuf heap in the system
* @name: used for debugging/device-node name
* @ops: ops struct for this heap
* @heap_devt heap device node
* @list list head connecting to list of heaps
* @heap_cdev heap char device
* @heap_dev heap device struct
*
* Represents a heap of memory from which buffers can be made.
*/
struct rk_dma_heap {
const char *name;
const struct rk_dma_heap_ops *ops;
void *priv;
dev_t heap_devt;
struct list_head list;
struct list_head dmabuf_list; /* dmabuf attach to this node */
struct mutex dmabuf_lock;
struct list_head contig_list; /* contig buffer attach to this node */
struct mutex contig_lock;
struct cdev heap_cdev;
struct kref refcount;
struct device *heap_dev;
bool support_cma;
struct seq_file *s;
unsigned long total_size;
};
struct rk_dma_heap_dmabuf {
struct list_head node;
struct dma_buf *dmabuf;
const char *orig_alloc;
phys_addr_t start;
phys_addr_t end;
};
struct rk_dma_heap_contig_buf {
struct list_head node;
const char *orig_alloc;
phys_addr_t start;
phys_addr_t end;
};
/**
* rk_dma_heap_get_drvdata() - get per-heap driver data
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* The per-heap data for the heap.
*/
void *rk_dma_heap_get_drvdata(struct rk_dma_heap *heap);
/**
* rk_dma_heap_get_dev() - get device struct for the heap
* @heap: DMA-Heap to retrieve device struct from
*
* Returns:
* The device struct for the heap.
*/
struct device *rk_dma_heap_get_dev(struct rk_dma_heap *heap);
/**
* rk_dma_heap_get_name() - get heap name
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* The char* for the heap name.
*/
const char *rk_dma_heap_get_name(struct rk_dma_heap *heap);
/**
* rk_dma_heap_add - adds a heap to dmabuf heaps
* @exp_info: information needed to register this heap
*/
struct rk_dma_heap *rk_dma_heap_add(const struct rk_dma_heap_export_info *exp_info);
/**
* rk_dma_heap_put - drops a reference to a dmabuf heaps, potentially freeing it
* @heap: heap pointer
*/
void rk_dma_heap_put(struct rk_dma_heap *heap);
/**
* rk_dma_heap_set_dev - set heap dev dma param
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* Zero on success, ERR_PTR(-errno) on error
*/
int rk_dma_heap_set_dev(struct device *heap_dev);
/**
* rk_dma_heap_find - Returns the registered dma_heap with the specified name
* @name: Name of the heap to find
*
* NOTE: dma_heaps returned from this function MUST be released
* using rk_dma_heap_put() when the user is done.
*/
struct rk_dma_heap *rk_dma_heap_find(const char *name);
/**
* rk_dma_heap_buffer_alloc - Allocate dma-buf from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*
* This is for internal dma-buf allocations only.
*/
struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/** rk_dma_heap_buffer_free - Free dma_buf allocated by rk_dma_heap_buffer_alloc
* @dma_buf: dma_buf to free
*
* This is really only a simple wrapper to dma_buf_put()
*/
void rk_dma_heap_buffer_free(struct dma_buf *dmabuf);
/**
* rk_dma_heap_bufferfd_alloc - Allocate dma-buf fd from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*/
int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/**
* rk_dma_heap_alloc_contig_pages - Allocate contiguous pages from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @name: the name who allocate
*/
struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name);
/**
* rk_dma_heap_free_contig_pages - Free contiguous pages to a dma_heap
* @heap: dma_heap to free to
* @pages: pages to free to
* @len: size to free
* @name: the name who allocate
*/
void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
struct page *pages, size_t len, const char *name);
/**
* rk_vmap_contig_pfn - Map contiguous pfn to vm area
* @pfn: indicate the first pfn of contig
* @count: count of pfns
* @prot: for mapping
*/
void *rk_vmap_contig_pfn(unsigned long pfn, unsigned int count,
pgprot_t prot);
/**
* rk_dma_heap_total_inc - Increase total buffer size
* @heap: dma_heap to increase
* @len: length to increase
*/
void rk_dma_heap_total_inc(struct rk_dma_heap *heap, size_t len);
/**
* rk_dma_heap_total_dec - Decrease total buffer size
* @heap: dma_heap to decrease
* @len: length to decrease
*/
void rk_dma_heap_total_dec(struct rk_dma_heap *heap, size_t len);
/**
* rk_dma_heap_get_cma - get cma structure
*/
struct cma *rk_dma_heap_get_cma(void);
#endif /* _DMA_HEAPS_H */

335
include/linux/rk-dma-heap.h
View File

@@ -11,347 +11,12 @@
#ifndef _DMA_HEAPS_H
#define _DMA_HEAPS_H
#include <linux/cdev.h>
#include <linux/types.h>
#include <linux/dma-buf.h>
#if defined(CONFIG_DMABUF_RK_HEAPS_DEBUG)
#define dma_heap_print(fmt, ...) \
printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#else
#define dma_heap_print(fmt, ...) \
no_printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#endif
#define RK_DMA_HEAP_NAME_LEN 16
struct rk_cma_heap {
struct rk_dma_heap *heap;
struct cma *cma;
};
struct rk_cma_heap_buffer {
struct rk_cma_heap *heap;
struct list_head attachments;
struct mutex lock;
unsigned long len;
struct page *cma_pages;
struct page **pages;
pgoff_t pagecount;
int vmap_cnt;
void *vaddr;
phys_addr_t phys;
bool attached;
};
struct rk_vmap_pfn_data {
unsigned long pfn; /* first pfn of contiguous */
pgprot_t prot;
};
/**
* struct rk_dma_heap_ops - ops to operate on a given heap
* @allocate: allocate dmabuf and return struct dma_buf ptr
* @get_pool_size: if heap maintains memory pools, get pool size in bytes
*
* allocate returns dmabuf on success, ERR_PTR(-errno) on error.
*/
struct rk_dma_heap_ops {
struct dma_buf *(*allocate)(struct rk_dma_heap *heap,
unsigned long len,
unsigned long fd_flags,
unsigned long heap_flags,
const char *name);
struct page *(*alloc_contig_pages)(struct rk_dma_heap *heap,
size_t len, const char *name);
void (*free_contig_pages)(struct rk_dma_heap *heap,
struct page *pages, size_t len,
const char *name);
long (*get_pool_size)(struct rk_dma_heap *heap);
};
/**
* struct rk_dma_heap_export_info - information needed to export a new dmabuf heap
* @name: used for debugging/device-node name
* @ops: ops struct for this heap
* @priv: heap exporter private data
*
* Information needed to export a new dmabuf heap.
*/
struct rk_dma_heap_export_info {
const char *name;
const struct rk_dma_heap_ops *ops;
void *priv;
bool support_cma;
};
/**
* struct rk_dma_heap - represents a dmabuf heap in the system
* @name: used for debugging/device-node name
* @ops: ops struct for this heap
* @heap_devt heap device node
* @list list head connecting to list of heaps
* @heap_cdev heap char device
* @heap_dev heap device struct
*
* Represents a heap of memory from which buffers can be made.
*/
struct rk_dma_heap {
const char *name;
const struct rk_dma_heap_ops *ops;
void *priv;
dev_t heap_devt;
struct list_head list;
struct list_head dmabuf_list; /* dmabuf attach to this node */
struct mutex dmabuf_lock;
struct list_head contig_list; /* contig buffer attach to this node */
struct mutex contig_lock;
struct cdev heap_cdev;
struct kref refcount;
struct device *heap_dev;
bool support_cma;
struct seq_file *s;
unsigned long total_size;
};
struct rk_dma_heap_dmabuf {
struct list_head node;
struct dma_buf *dmabuf;
const char *orig_alloc;
phys_addr_t start;
phys_addr_t end;
};
struct rk_dma_heap_contig_buf {
struct list_head node;
const char *orig_alloc;
phys_addr_t start;
phys_addr_t end;
};
#if defined(CONFIG_DMABUF_HEAPS_ROCKCHIP)
int rk_dma_heap_cma_setup(void);
/**
* rk_dma_heap_get_drvdata() - get per-heap driver data
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* The per-heap data for the heap.
*/
void *rk_dma_heap_get_drvdata(struct rk_dma_heap *heap);
/**
* rk_dma_heap_get_dev() - get device struct for the heap
* @heap: DMA-Heap to retrieve device struct from
*
* Returns:
* The device struct for the heap.
*/
struct device *rk_dma_heap_get_dev(struct rk_dma_heap *heap);
/**
* rk_dma_heap_get_name() - get heap name
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* The char* for the heap name.
*/
const char *rk_dma_heap_get_name(struct rk_dma_heap *heap);
/**
* rk_dma_heap_add - adds a heap to dmabuf heaps
* @exp_info: information needed to register this heap
*/
struct rk_dma_heap *rk_dma_heap_add(const struct rk_dma_heap_export_info *exp_info);
/**
* rk_dma_heap_put - drops a reference to a dmabuf heaps, potentially freeing it
* @heap: heap pointer
*/
void rk_dma_heap_put(struct rk_dma_heap *heap);
/**
* rk_dma_heap_set_dev - set heap dev dma param
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* Zero on success, ERR_PTR(-errno) on error
*/
int rk_dma_heap_set_dev(struct device *heap_dev);
/**
* rk_dma_heap_find - Returns the registered dma_heap with the specified name
* @name: Name of the heap to find
*
* NOTE: dma_heaps returned from this function MUST be released
* using rk_dma_heap_put() when the user is done.
*/
struct rk_dma_heap *rk_dma_heap_find(const char *name);
/**
* rk_dma_heap_buffer_alloc - Allocate dma-buf from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*
* This is for internal dma-buf allocations only.
*/
struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/** rk_dma_heap_buffer_free - Free dma_buf allocated by rk_dma_heap_buffer_alloc
* @dma_buf: dma_buf to free
*
* This is really only a simple wrapper to dma_buf_put()
*/
void rk_dma_heap_buffer_free(struct dma_buf *dmabuf);
/**
* rk_dma_heap_bufferfd_alloc - Allocate dma-buf fd from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*/
int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/**
* rk_dma_heap_alloc_contig_pages - Allocate contiguous pages from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @name: the name who allocate
*/
struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name);
/**
* rk_dma_heap_free_contig_pages - Free contiguous pages to a dma_heap
* @heap: dma_heap to free to
* @pages: pages to free to
* @len: size to free
* @name: the name who allocate
*/
void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
struct page *pages, size_t len, const char *name);
/**
* rk_vmap_contig_pfn - Map contiguous pfn to vm area
* @pfn: indicate the first pfn of contig
* @count: count of pfns
* @prot: for mapping
*/
void *rk_vmap_contig_pfn(unsigned long pfn, unsigned int count,
pgprot_t prot);
/**
* rk_dma_heap_total_inc - Increase total buffer size
* @heap: dma_heap to increase
* @len: length to increase
*/
void rk_dma_heap_total_inc(struct rk_dma_heap *heap, size_t len);
/**
* rk_dma_heap_total_dec - Decrease total buffer size
* @heap: dma_heap to decrease
* @len: length to decrease
*/
void rk_dma_heap_total_dec(struct rk_dma_heap *heap, size_t len);
/**
* rk_dma_heap_get_cma - get cma structure
*/
struct cma *rk_dma_heap_get_cma(void);
#else
static inline int rk_dma_heap_cma_setup(void)
{
return -ENODEV;
}
static inline void *rk_dma_heap_get_drvdata(struct rk_dma_heap *heap)
{
return NULL;
}
static inline struct device *rk_dma_heap_get_dev(struct rk_dma_heap *heap)
{
return NULL;
}
static inline const char *rk_dma_heap_get_name(struct rk_dma_heap *heap)
{
return NULL;
}
static inline struct rk_dma_heap *rk_dma_heap_add(const struct rk_dma_heap_export_info *exp_info)
{
return NULL;
}
static inline void rk_dma_heap_put(struct rk_dma_heap *heap)
{
}
static inline int rk_dma_heap_set_dev(struct device *heap_dev)
{
return -ENODEV;
}
static inline struct rk_dma_heap *rk_dma_heap_find(const char *name)
{
return NULL;
}
static inline struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name)
{
return NULL;
}
static inline void rk_dma_heap_buffer_free(struct dma_buf *dmabuf)
{
}
static inline int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name)
{
return -ENODEV;
}
static inline struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name)
{
return NULL;
}
static inline void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
struct page *pages, size_t len, const char *name)
{
}
static inline void *rk_vmap_contig_pfn(unsigned long pfn, unsigned int count,
pgprot_t prot)
{
return NULL;
}
void rk_dma_heap_total_inc(struct rk_dma_heap *heap, size_t len)
{
}
void rk_dma_heap_total_dec(struct rk_dma_heap *heap, size_t len)
{
}
static inline struct cma *rk_dma_heap_get_cma(void)
{
return NULL;
}
#endif
#endif /* _DMA_HEAPS_H */