aboutsummaryrefslogtreecommitdiffstats
path: root/arch/blackfin/mach-bf561/dma.c
blob: 24415eb82698dd4961b1fddb3ac9c738aac141d0 (plain) (blame)
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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 * File:         arch/blackfin/mach-bf561/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_BLACKFIN_DMA_CHANNEL] = {
	(struct dma_register *) DMA1_0_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_1_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_2_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_3_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_4_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_5_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_6_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_7_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_8_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_9_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_10_NEXT_DESC_PTR,
	(struct dma_register *) DMA1_11_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_0_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_1_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_2_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_3_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_4_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_5_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_6_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_7_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_8_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_9_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_10_NEXT_DESC_PTR,
	(struct dma_register *) DMA2_11_NEXT_DESC_PTR,
	(struct dma_register *) MDMA1_D0_NEXT_DESC_PTR,
	(struct dma_register *) MDMA1_S0_NEXT_DESC_PTR,
	(struct dma_register *) MDMA1_D1_NEXT_DESC_PTR,
	(struct dma_register *) MDMA1_S1_NEXT_DESC_PTR,
	(struct dma_register *) MDMA2_D0_NEXT_DESC_PTR,
	(struct dma_register *) MDMA2_S0_NEXT_DESC_PTR,
	(struct dma_register *) MDMA2_D1_NEXT_DESC_PTR,
	(struct dma_register *) MDMA2_S1_NEXT_DESC_PTR,
	(struct dma_register *) IMDMA_D0_NEXT_DESC_PTR,
	(struct dma_register *) IMDMA_S0_NEXT_DESC_PTR,
	(struct dma_register *) IMDMA_D1_NEXT_DESC_PTR,
	(struct dma_register *) IMDMA_S1_NEXT_DESC_PTR,
};
EXPORT_SYMBOL(dma_io_base_addr);

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

	switch (channel) {
	case CH_PPI0:
		ret_irq = IRQ_PPI0;
		break;
	case CH_PPI1:
		ret_irq = IRQ_PPI1;
		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_UART_RX:
		ret_irq = IRQ_UART_RX;
		break;
	case CH_UART_TX:
		ret_irq = IRQ_UART_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;
	case CH_MEM_STREAM2_SRC:
	case CH_MEM_STREAM2_DEST:
		ret_irq = IRQ_MEM_DMA2;
		break;
	case CH_MEM_STREAM3_SRC:
	case CH_MEM_STREAM3_DEST:
		ret_irq = IRQ_MEM_DMA3;
		break;

	case CH_IMEM_STREAM0_SRC:
	case CH_IMEM_STREAM0_DEST:
		ret_irq = IRQ_IMEM_DMA0;
		break;
	case CH_IMEM_STREAM1_SRC:
	case CH_IMEM_STREAM1_DEST:
		ret_irq = IRQ_IMEM_DMA1;
		break;
	}
	return ret_irq;
}