1 /*
2 * File: arch/blackfin/mach-bf548/dma.c
3 * Based on:
4 * Author:
5 *
6 * Created:
7 * Description: This file contains the simple DMA Implementation for Blackfin
8 *
9 * Modified:
10 * Copyright 2004-2008 Analog Devices Inc.
11 *
12 * Bugs: Enter bugs at http://blackfin.uclinux.org/
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see the file COPYING, or write
26 * to the Free Software Foundation, Inc.,
27 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 */
29
30 #include <linux/module.h>
31
32 #include <asm/blackfin.h>
33 #include <asm/dma.h>
34
35 struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
36 (struct dma_register *) DMA0_NEXT_DESC_PTR,
37 (struct dma_register *) DMA1_NEXT_DESC_PTR,
38 (struct dma_register *) DMA2_NEXT_DESC_PTR,
39 (struct dma_register *) DMA3_NEXT_DESC_PTR,
40 (struct dma_register *) DMA4_NEXT_DESC_PTR,
41 (struct dma_register *) DMA5_NEXT_DESC_PTR,
42 (struct dma_register *) DMA6_NEXT_DESC_PTR,
43 (struct dma_register *) DMA7_NEXT_DESC_PTR,
44 (struct dma_register *) DMA8_NEXT_DESC_PTR,
45 (struct dma_register *) DMA9_NEXT_DESC_PTR,
46 (struct dma_register *) DMA10_NEXT_DESC_PTR,
47 (struct dma_register *) DMA11_NEXT_DESC_PTR,
48 (struct dma_register *) DMA12_NEXT_DESC_PTR,
49 (struct dma_register *) DMA13_NEXT_DESC_PTR,
50 (struct dma_register *) DMA14_NEXT_DESC_PTR,
51 (struct dma_register *) DMA15_NEXT_DESC_PTR,
52 (struct dma_register *) DMA16_NEXT_DESC_PTR,
53 (struct dma_register *) DMA17_NEXT_DESC_PTR,
54 (struct dma_register *) DMA18_NEXT_DESC_PTR,
55 (struct dma_register *) DMA19_NEXT_DESC_PTR,
56 (struct dma_register *) DMA20_NEXT_DESC_PTR,
57 (struct dma_register *) DMA21_NEXT_DESC_PTR,
58 (struct dma_register *) DMA22_NEXT_DESC_PTR,
59 (struct dma_register *) DMA23_NEXT_DESC_PTR,
60 (struct dma_register *) MDMA_D0_NEXT_DESC_PTR,
61 (struct dma_register *) MDMA_S0_NEXT_DESC_PTR,
62 (struct dma_register *) MDMA_D1_NEXT_DESC_PTR,
63 (struct dma_register *) MDMA_S1_NEXT_DESC_PTR,
64 (struct dma_register *) MDMA_D2_NEXT_DESC_PTR,
65 (struct dma_register *) MDMA_S2_NEXT_DESC_PTR,
66 (struct dma_register *) MDMA_D3_NEXT_DESC_PTR,
67 (struct dma_register *) MDMA_S3_NEXT_DESC_PTR,
68 };
69 EXPORT_SYMBOL(dma_io_base_addr);
70
channel2irq(unsigned int channel)71 int channel2irq(unsigned int channel)
72 {
73 int ret_irq = -1;
74
75 switch (channel) {
76 case CH_SPORT0_RX:
77 ret_irq = IRQ_SPORT0_RX;
78 break;
79 case CH_SPORT0_TX:
80 ret_irq = IRQ_SPORT0_TX;
81 break;
82 case CH_SPORT1_RX:
83 ret_irq = IRQ_SPORT1_RX;
84 break;
85 case CH_SPORT1_TX:
86 ret_irq = IRQ_SPORT1_TX;
87 case CH_SPI0:
88 ret_irq = IRQ_SPI0;
89 break;
90 case CH_SPI1:
91 ret_irq = IRQ_SPI1;
92 break;
93 case CH_UART0_RX:
94 ret_irq = IRQ_UART_RX;
95 break;
96 case CH_UART0_TX:
97 ret_irq = IRQ_UART_TX;
98 break;
99 case CH_UART1_RX:
100 ret_irq = IRQ_UART_RX;
101 break;
102 case CH_UART1_TX:
103 ret_irq = IRQ_UART_TX;
104 break;
105 case CH_EPPI0:
106 ret_irq = IRQ_EPPI0;
107 break;
108 case CH_EPPI1:
109 ret_irq = IRQ_EPPI1;
110 break;
111 case CH_EPPI2:
112 ret_irq = IRQ_EPPI2;
113 break;
114 case CH_PIXC_IMAGE:
115 ret_irq = IRQ_PIXC_IN0;
116 break;
117 case CH_PIXC_OVERLAY:
118 ret_irq = IRQ_PIXC_IN1;
119 break;
120 case CH_PIXC_OUTPUT:
121 ret_irq = IRQ_PIXC_OUT;
122 break;
123 case CH_SPORT2_RX:
124 ret_irq = IRQ_SPORT2_RX;
125 break;
126 case CH_SPORT2_TX:
127 ret_irq = IRQ_SPORT2_TX;
128 break;
129 case CH_SPORT3_RX:
130 ret_irq = IRQ_SPORT3_RX;
131 break;
132 case CH_SPORT3_TX:
133 ret_irq = IRQ_SPORT3_TX;
134 break;
135 case CH_SDH:
136 ret_irq = IRQ_SDH;
137 break;
138 case CH_SPI2:
139 ret_irq = IRQ_SPI2;
140 break;
141 case CH_MEM_STREAM0_SRC:
142 case CH_MEM_STREAM0_DEST:
143 ret_irq = IRQ_MDMAS0;
144 break;
145 case CH_MEM_STREAM1_SRC:
146 case CH_MEM_STREAM1_DEST:
147 ret_irq = IRQ_MDMAS1;
148 break;
149 case CH_MEM_STREAM2_SRC:
150 case CH_MEM_STREAM2_DEST:
151 ret_irq = IRQ_MDMAS2;
152 break;
153 case CH_MEM_STREAM3_SRC:
154 case CH_MEM_STREAM3_DEST:
155 ret_irq = IRQ_MDMAS3;
156 break;
157 }
158 return ret_irq;
159 }
160