2 * Header for the new SH dmaengine driver
4 * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
13 #include <linux/dmaengine.h>
14 #include <linux/list.h>
15 #include <linux/shdma-base.h>
16 #include <linux/types.h>
20 /* Used by slave DMA clients to request DMA to/from a specific peripheral */
21 struct sh_dmae_slave {
22 struct shdma_slave shdma_slave; /* Set by the platform */
23 struct device *dma_dev; /* Set by the platform */
24 const struct sh_dmae_slave_config *config; /* Set by the driver */
28 * Supplied by platforms to specify, how a DMA channel has to be configured for
29 * a certain peripheral
31 struct sh_dmae_slave_config {
32 unsigned int slave_id;
38 struct sh_dmae_channel {
41 unsigned int dmars_bit;
42 unsigned int chclr_offset;
45 struct sh_dmae_pdata {
46 const struct sh_dmae_slave_config *slave;
48 const struct sh_dmae_channel *channel;
50 unsigned int ts_low_shift;
51 unsigned int ts_low_mask;
52 unsigned int ts_high_shift;
53 unsigned int ts_high_mask;
54 const unsigned int *ts_shift;
57 unsigned int chcr_offset;
60 unsigned int dmaor_is_32bit:1;
61 unsigned int needs_tend_set:1;
62 unsigned int no_dmars:1;
63 unsigned int chclr_present:1;
64 unsigned int slave_only:1;
74 #define TEND 0x18 /* USB-DMAC */
76 /* DMAOR definitions */
77 #define DMAOR_AE 0x00000004
78 #define DMAOR_NMIF 0x00000002
79 #define DMAOR_DME 0x00000001
81 /* Definitions for the SuperH DMAC */
82 #define REQ_L 0x00000000
83 #define REQ_E 0x00080000
84 #define RACK_H 0x00000000
85 #define RACK_L 0x00040000
86 #define ACK_R 0x00000000
87 #define ACK_W 0x00020000
88 #define ACK_H 0x00000000
89 #define ACK_L 0x00010000
90 #define DM_INC 0x00004000
91 #define DM_DEC 0x00008000
92 #define DM_FIX 0x0000c000
93 #define SM_INC 0x00001000
94 #define SM_DEC 0x00002000
95 #define SM_FIX 0x00003000
96 #define RS_IN 0x00000200
97 #define RS_OUT 0x00000300
98 #define TS_BLK 0x00000040
99 #define TM_BUR 0x00000020
100 #define CHCR_DE 0x00000001
101 #define CHCR_TE 0x00000002
102 #define CHCR_IE 0x00000004