diff options
Diffstat (limited to 'arch/arm/mach-imx/include/mach/imx-dma.h')
-rw-r--r-- | arch/arm/mach-imx/include/mach/imx-dma.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/arch/arm/mach-imx/include/mach/imx-dma.h b/arch/arm/mach-imx/include/mach/imx-dma.h deleted file mode 100644 index bbe54df7f0de..000000000000 --- a/arch/arm/mach-imx/include/mach/imx-dma.h +++ /dev/null | |||
@@ -1,98 +0,0 @@ | |||
1 | /* | ||
2 | * linux/include/asm-arm/imxads/dma.h | ||
3 | * | ||
4 | * Copyright (C) 1997,1998 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
19 | */ | ||
20 | |||
21 | #include <mach/dma.h> | ||
22 | |||
23 | #ifndef __ASM_ARCH_IMX_DMA_H | ||
24 | #define __ASM_ARCH_IMX_DMA_H | ||
25 | |||
26 | #define IMX_DMA_CHANNELS 11 | ||
27 | |||
28 | /* | ||
29 | * struct imx_dma_channel - i.MX specific DMA extension | ||
30 | * @name: name specified by DMA client | ||
31 | * @irq_handler: client callback for end of transfer | ||
32 | * @err_handler: client callback for error condition | ||
33 | * @data: clients context data for callbacks | ||
34 | * @dma_mode: direction of the transfer %DMA_MODE_READ or %DMA_MODE_WRITE | ||
35 | * @sg: pointer to the actual read/written chunk for scatter-gather emulation | ||
36 | * @sgbc: counter of processed bytes in the actual read/written chunk | ||
37 | * @resbytes: total residual number of bytes to transfer | ||
38 | * (it can be lower or same as sum of SG mapped chunk sizes) | ||
39 | * @sgcount: number of chunks to be read/written | ||
40 | * | ||
41 | * Structure is used for IMX DMA processing. It would be probably good | ||
42 | * @struct dma_struct in the future for external interfacing and use | ||
43 | * @struct imx_dma_channel only as extension to it. | ||
44 | */ | ||
45 | |||
46 | struct imx_dma_channel { | ||
47 | const char *name; | ||
48 | void (*irq_handler) (int, void *); | ||
49 | void (*err_handler) (int, void *, int errcode); | ||
50 | void *data; | ||
51 | unsigned int dma_mode; | ||
52 | struct scatterlist *sg; | ||
53 | unsigned int sgbc; | ||
54 | unsigned int sgcount; | ||
55 | unsigned int resbytes; | ||
56 | int dma_num; | ||
57 | }; | ||
58 | |||
59 | extern struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS]; | ||
60 | |||
61 | #define IMX_DMA_ERR_BURST 1 | ||
62 | #define IMX_DMA_ERR_REQUEST 2 | ||
63 | #define IMX_DMA_ERR_TRANSFER 4 | ||
64 | #define IMX_DMA_ERR_BUFFER 8 | ||
65 | |||
66 | /* The type to distinguish channel numbers parameter from ordinal int type */ | ||
67 | typedef int imx_dmach_t; | ||
68 | |||
69 | #define DMA_MODE_READ 0 | ||
70 | #define DMA_MODE_WRITE 1 | ||
71 | #define DMA_MODE_MASK 1 | ||
72 | |||
73 | int | ||
74 | imx_dma_setup_single(imx_dmach_t dma_ch, dma_addr_t dma_address, | ||
75 | unsigned int dma_length, unsigned int dev_addr, unsigned int dmamode); | ||
76 | |||
77 | int | ||
78 | imx_dma_setup_sg(imx_dmach_t dma_ch, | ||
79 | struct scatterlist *sg, unsigned int sgcount, unsigned int dma_length, | ||
80 | unsigned int dev_addr, unsigned int dmamode); | ||
81 | |||
82 | int | ||
83 | imx_dma_setup_handlers(imx_dmach_t dma_ch, | ||
84 | void (*irq_handler) (int, void *), | ||
85 | void (*err_handler) (int, void *, int), void *data); | ||
86 | |||
87 | void imx_dma_enable(imx_dmach_t dma_ch); | ||
88 | |||
89 | void imx_dma_disable(imx_dmach_t dma_ch); | ||
90 | |||
91 | int imx_dma_request(imx_dmach_t dma_ch, const char *name); | ||
92 | |||
93 | void imx_dma_free(imx_dmach_t dma_ch); | ||
94 | |||
95 | imx_dmach_t imx_dma_request_by_prio(const char *name, imx_dma_prio prio); | ||
96 | |||
97 | |||
98 | #endif /* _ASM_ARCH_IMX_DMA_H */ | ||