diff options
Diffstat (limited to 'arch/arm/mach-imx/include')
-rw-r--r-- | arch/arm/mach-imx/include/mach/dma-mx1-mx2.h | 10 | ||||
-rw-r--r-- | arch/arm/mach-imx/include/mach/dma-v1.h | 107 |
2 files changed, 117 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/dma-mx1-mx2.h b/arch/arm/mach-imx/include/mach/dma-mx1-mx2.h new file mode 100644 index 000000000000..df5f522da6b3 --- /dev/null +++ b/arch/arm/mach-imx/include/mach/dma-mx1-mx2.h | |||
@@ -0,0 +1,10 @@ | |||
1 | #ifndef __MACH_DMA_MX1_MX2_H__ | ||
2 | #define __MACH_DMA_MX1_MX2_H__ | ||
3 | /* | ||
4 | * Don't use this header in new code, it will go away when all users are | ||
5 | * converted to mach/dma-v1.h | ||
6 | */ | ||
7 | |||
8 | #include <mach/dma-v1.h> | ||
9 | |||
10 | #endif /* ifndef __MACH_DMA_MX1_MX2_H__ */ | ||
diff --git a/arch/arm/mach-imx/include/mach/dma-v1.h b/arch/arm/mach-imx/include/mach/dma-v1.h new file mode 100644 index 000000000000..287431cc13e5 --- /dev/null +++ b/arch/arm/mach-imx/include/mach/dma-v1.h | |||
@@ -0,0 +1,107 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-imx/include/mach/dma-v1.h | ||
3 | * | ||
4 | * i.MX DMA registration and IRQ dispatching | ||
5 | * | ||
6 | * Copyright 2006 Pavel Pisa <pisa@cmp.felk.cvut.cz> | ||
7 | * Copyright 2008 Juergen Beisert, <kernel@pengutronix.de> | ||
8 | * Copyright 2008 Sascha Hauer, <s.hauer@pengutronix.de> | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or | ||
11 | * modify it under the terms of the GNU General Public License | ||
12 | * as published by the Free Software Foundation; either version 2 | ||
13 | * of the License, or (at your option) any later version. | ||
14 | * This program is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 | * GNU General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with this program; if not, write to the Free Software | ||
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||
22 | * MA 02110-1301, USA. | ||
23 | */ | ||
24 | |||
25 | #ifndef __MACH_DMA_V1_H__ | ||
26 | #define __MACH_DMA_V1_H__ | ||
27 | |||
28 | #define imx_has_dma_v1() (cpu_is_mx1() || cpu_is_mx21() || cpu_is_mx27()) | ||
29 | |||
30 | #define IMX_DMA_CHANNELS 16 | ||
31 | |||
32 | #define DMA_MODE_READ 0 | ||
33 | #define DMA_MODE_WRITE 1 | ||
34 | #define DMA_MODE_MASK 1 | ||
35 | |||
36 | #define MX1_DMA_REG(offset) MX1_IO_ADDRESS(MX1_DMA_BASE_ADDR + (offset)) | ||
37 | |||
38 | /* DMA Interrupt Mask Register */ | ||
39 | #define MX1_DMA_DIMR MX1_DMA_REG(0x08) | ||
40 | |||
41 | /* Channel Control Register */ | ||
42 | #define MX1_DMA_CCR(x) MX1_DMA_REG(0x8c + ((x) << 6)) | ||
43 | |||
44 | #define IMX_DMA_MEMSIZE_32 (0 << 4) | ||
45 | #define IMX_DMA_MEMSIZE_8 (1 << 4) | ||
46 | #define IMX_DMA_MEMSIZE_16 (2 << 4) | ||
47 | #define IMX_DMA_TYPE_LINEAR (0 << 10) | ||
48 | #define IMX_DMA_TYPE_2D (1 << 10) | ||
49 | #define IMX_DMA_TYPE_FIFO (2 << 10) | ||
50 | |||
51 | #define IMX_DMA_ERR_BURST (1 << 0) | ||
52 | #define IMX_DMA_ERR_REQUEST (1 << 1) | ||
53 | #define IMX_DMA_ERR_TRANSFER (1 << 2) | ||
54 | #define IMX_DMA_ERR_BUFFER (1 << 3) | ||
55 | #define IMX_DMA_ERR_TIMEOUT (1 << 4) | ||
56 | |||
57 | int | ||
58 | imx_dma_config_channel(int channel, unsigned int config_port, | ||
59 | unsigned int config_mem, unsigned int dmareq, int hw_chaining); | ||
60 | |||
61 | void | ||
62 | imx_dma_config_burstlen(int channel, unsigned int burstlen); | ||
63 | |||
64 | int | ||
65 | imx_dma_setup_single(int channel, dma_addr_t dma_address, | ||
66 | unsigned int dma_length, unsigned int dev_addr, | ||
67 | unsigned int dmamode); | ||
68 | |||
69 | |||
70 | /* | ||
71 | * Use this flag as the dma_length argument to imx_dma_setup_sg() | ||
72 | * to create an endless running dma loop. The end of the scatterlist | ||
73 | * must be linked to the beginning for this to work. | ||
74 | */ | ||
75 | #define IMX_DMA_LENGTH_LOOP ((unsigned int)-1) | ||
76 | |||
77 | int | ||
78 | imx_dma_setup_sg(int channel, struct scatterlist *sg, | ||
79 | unsigned int sgcount, unsigned int dma_length, | ||
80 | unsigned int dev_addr, unsigned int dmamode); | ||
81 | |||
82 | int | ||
83 | imx_dma_setup_handlers(int channel, | ||
84 | void (*irq_handler) (int, void *), | ||
85 | void (*err_handler) (int, void *, int), void *data); | ||
86 | |||
87 | int | ||
88 | imx_dma_setup_progression_handler(int channel, | ||
89 | void (*prog_handler) (int, void*, struct scatterlist*)); | ||
90 | |||
91 | void imx_dma_enable(int channel); | ||
92 | |||
93 | void imx_dma_disable(int channel); | ||
94 | |||
95 | int imx_dma_request(int channel, const char *name); | ||
96 | |||
97 | void imx_dma_free(int channel); | ||
98 | |||
99 | enum imx_dma_prio { | ||
100 | DMA_PRIO_HIGH = 0, | ||
101 | DMA_PRIO_MEDIUM = 1, | ||
102 | DMA_PRIO_LOW = 2 | ||
103 | }; | ||
104 | |||
105 | int imx_dma_request_by_prio(const char *name, enum imx_dma_prio prio); | ||
106 | |||
107 | #endif /* __MACH_DMA_V1_H__ */ | ||