summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/mach-bf537/dma.c
blob: d23fc0edf2b956cca2e15f63cb7e832f55c0dee0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
/*
 * File:         arch/blackfin/mach-bf537/dma.c
 * Based on:
 * Author:
 *
 * Created:
 * Description:  This file contains the simple DMA Implementation for Blackfin
 *
 * Modified:
 *               Copyright 2004-2007 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include <linux/module.h>

#include <asm/blackfin.h>
#include <asm/dma.h>

struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
	(struct dma_register *) DMA0_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_NEXT_DESC_PTR,
	(struct dma_register *) DMA3_NEXT_DESC_PTR,
	(struct dma_register *) DMA4_NEXT_DESC_PTR,
	(struct dma_register *) DMA5_NEXT_DESC_PTR,
	(struct dma_register *) DMA6_NEXT_DESC_PTR,
	(struct dma_register *) DMA7_NEXT_DESC_PTR,
	(struct dma_register *) DMA8_NEXT_DESC_PTR,
	(struct dma_register *) DMA9_NEXT_DESC_PTR,
	(struct dma_register *) DMA10_NEXT_DESC_PTR,
	(struct dma_register *) DMA11_NEXT_DESC_PTR,
	(struct dma_register *) MDMA_D0_NEXT_DESC_PTR,
	(struct dma_register *) MDMA_S0_NEXT_DESC_PTR,
	(struct dma_register *) MDMA_D1_NEXT_DESC_PTR,
	(struct dma_register *) MDMA_S1_NEXT_DESC_PTR,
};
EXPORT_SYMBOL(dma_io_base_addr);

int channel2irq(unsigned int channel)
{
	int ret_irq = -1;

	switch (channel) {
	case CH_PPI:
		ret_irq = IRQ_PPI;
		break;

	case CH_EMAC_RX:
		ret_irq = IRQ_MAC_RX;
		break;

	case CH_EMAC_TX:
		ret_irq = IRQ_MAC_TX;
		break;

	case CH_UART1_RX:
		ret_irq = IRQ_UART1_RX;
		break;

	case CH_UART1_TX:
		ret_irq = IRQ_UART1_TX;
		break;

	case CH_SPORT0_RX:
		ret_irq = IRQ_SPORT0_RX;
		break;

	case CH_SPORT0_TX:
		ret_irq = IRQ_SPORT0_TX;
		break;

	case CH_SPORT1_RX:
		ret_irq = IRQ_SPORT1_RX;
		break;

	case CH_SPORT1_TX:
		ret_irq = IRQ_SPORT1_TX;
		break;

	case CH_SPI:
		ret_irq = IRQ_SPI;
		break;

	case CH_UART0_RX:
		ret_irq = IRQ_UART0_RX;
		break;

	case CH_UART0_TX:
		ret_irq = IRQ_UART0_TX;
		break;

	case CH_MEM_STREAM0_SRC:
	case CH_MEM_STREAM0_DEST:
		ret_irq = IRQ_MEM_DMA0;
		break;

	case CH_MEM_STREAM1_SRC:
	case CH_MEM_STREAM1_DEST:
		ret_irq = IRQ_MEM_DMA1;
		break;
	}
	return ret_irq;
}