xref: /OK3568_Linux_fs/kernel/include/linux/platform_data/dma-mmp_tdma.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  *  SRAM Memory Management
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  *  Copyright (c) 2011 Marvell Semiconductors Inc.
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #ifndef __DMA_MMP_TDMA_H
9*4882a593Smuzhiyun #define __DMA_MMP_TDMA_H
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun #include <linux/genalloc.h>
12*4882a593Smuzhiyun 
13*4882a593Smuzhiyun /* ARBITRARY:  SRAM allocations are multiples of this 2^N size */
14*4882a593Smuzhiyun #define SRAM_GRANULARITY	512
15*4882a593Smuzhiyun 
16*4882a593Smuzhiyun enum sram_type {
17*4882a593Smuzhiyun 	MMP_SRAM_UNDEFINED = 0,
18*4882a593Smuzhiyun 	MMP_ASRAM,
19*4882a593Smuzhiyun 	MMP_ISRAM,
20*4882a593Smuzhiyun };
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun struct sram_platdata {
23*4882a593Smuzhiyun 	char *pool_name;
24*4882a593Smuzhiyun 	int granularity;
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun #ifdef CONFIG_MMP_SRAM
28*4882a593Smuzhiyun extern struct gen_pool *sram_get_gpool(char *pool_name);
29*4882a593Smuzhiyun #else
sram_get_gpool(char * pool_name)30*4882a593Smuzhiyun static inline struct gen_pool *sram_get_gpool(char *pool_name)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun 	return NULL;
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun #endif
35*4882a593Smuzhiyun 
36*4882a593Smuzhiyun #endif /* __DMA_MMP_TDMA_H */
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