Add support for the n516
[openwrt/staging/wigyori.git] / target / linux / xburst / files-2.6.32 / arch / mips / include / asm / mach-jz4740 / dma.h
1 /*
2 * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
3 * JZ7420/JZ4740 DMA definitions
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 * You should have received a copy of the GNU General Public License along
11 * with this program; if not, write to the Free Software Foundation, Inc.,
12 * 675 Mass Ave, Cambridge, MA 02139, USA.
13 *
14 */
15
16 #ifndef __ASM_MACH_JZ4740_DMA_H__
17 #define __ASM_MACH_JZ4740_DMA_H__
18
19 struct jz4740_dma_chan;
20
21 enum jz4740_dma_request_type {
22 JZ4740_DMA_TYPE_AUTO_REQUEST = 8,
23 JZ4740_DMA_TYPE_UART_TRANSMIT = 20,
24 JZ4740_DMA_TYPE_UART_RECEIVE = 21,
25 JZ4740_DMA_TYPE_SPI_TRANSMIT = 22,
26 JZ4740_DMA_TYPE_SPI_RECEIVE = 23,
27 JZ4740_DMA_TYPE_AIC_TRANSMIT = 24,
28 JZ4740_DMA_TYPE_AIC_RECEIVE = 25,
29 JZ4740_DMA_TYPE_MMC_TRANSMIT = 26,
30 JZ4740_DMA_TYPE_MMC_RECEIVE = 27,
31 JZ4740_DMA_TYPE_TCU = 28,
32 JZ4740_DMA_TYPE_SADC = 29,
33 JZ4740_DMA_TYPE_SLCD = 30,
34 };
35
36 enum jz4740_dma_width {
37 JZ4740_DMA_WIDTH_8BIT,
38 JZ4740_DMA_WIDTH_16BIT,
39 JZ4740_DMA_WIDTH_32BIT,
40 };
41
42 enum jz4740_dma_transfer_size {
43 JZ4740_DMA_TRANSFER_SIZE_4BYTE = 0,
44 JZ4740_DMA_TRANSFER_SIZE_1BYTE = 1,
45 JZ4740_DMA_TRANSFER_SIZE_2BYTE = 2,
46 JZ4740_DMA_TRANSFER_SIZE_16BYTE = 3,
47 JZ4740_DMA_TRANSFER_SIZE_32BYTE = 4,
48 };
49
50 enum jz4740_dma_flags {
51 JZ4740_DMA_SRC_AUTOINC = 0x2,
52 JZ4740_DMA_DST_AUTOINC = 0x1,
53 };
54
55 enum jz4740_dma_mode {
56 JZ4740_DMA_MODE_SINGLE = 0,
57 JZ4740_DMA_MODE_BLOCK = 1,
58 };
59
60 struct jz4740_dma_config {
61 enum jz4740_dma_width src_width;
62 enum jz4740_dma_width dst_width;
63 enum jz4740_dma_transfer_size transfer_size;
64 enum jz4740_dma_request_type request_type;
65 enum jz4740_dma_flags flags;
66 enum jz4740_dma_mode mode;
67 };
68
69 typedef void (*jz4740_dma_complete_callback_t)(struct jz4740_dma_chan *, int , void *);
70
71 struct jz4740_dma_chan* jz4740_dma_request(void *dev, const char *name);
72 void jz4740_dma_free(struct jz4740_dma_chan *dma);
73
74 void jz4740_dma_configure(struct jz4740_dma_chan *dma,
75 const struct jz4740_dma_config *config);
76
77
78 void jz4740_dma_enable(struct jz4740_dma_chan *dma);
79 void jz4740_dma_disable(struct jz4740_dma_chan *dma);
80
81 void jz4740_dma_set_src_addr(struct jz4740_dma_chan *dma, dma_addr_t src);
82 void jz4740_dma_set_dst_addr(struct jz4740_dma_chan *dma, dma_addr_t dst);
83 void jz4740_dma_set_transfer_count(struct jz4740_dma_chan *dma, uint32_t count);
84
85 uint32_t jz4740_dma_get_residue(const struct jz4740_dma_chan *dma);
86
87 void jz4740_dma_set_complete_cb(struct jz4740_dma_chan *dma,
88 jz4740_dma_complete_callback_t cb);
89
90 #endif /* __ASM_JZ4740_DMA_H__ */