1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2003-2006 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Samsung S3C24XX DMA support
7 */
8
9 #ifndef __ASM_ARCH_DMA_H
10 #define __ASM_ARCH_DMA_H __FILE__
11
12 #include <linux/device.h>
13
14 /* We use `virtual` dma channels to hide the fact we have only a limited
15 * number of DMA channels, and not of all of them (dependent on the device)
16 * can be attached to any DMA source. We therefore let the DMA core handle
17 * the allocation of hardware channels to clients.
18 */
19
20 enum dma_ch {
21 DMACH_XD0 = 0,
22 DMACH_XD1,
23 DMACH_SDI,
24 DMACH_SPI0,
25 DMACH_SPI1,
26 DMACH_UART0,
27 DMACH_UART1,
28 DMACH_UART2,
29 DMACH_TIMER,
30 DMACH_I2S_IN,
31 DMACH_I2S_OUT,
32 DMACH_PCM_IN,
33 DMACH_PCM_OUT,
34 DMACH_MIC_IN,
35 DMACH_USB_EP1,
36 DMACH_USB_EP2,
37 DMACH_USB_EP3,
38 DMACH_USB_EP4,
39 DMACH_UART0_SRC2, /* s3c2412 second uart sources */
40 DMACH_UART1_SRC2,
41 DMACH_UART2_SRC2,
42 DMACH_UART3, /* s3c2443 has extra uart */
43 DMACH_UART3_SRC2,
44 DMACH_SPI0_TX, /* s3c2443/2416/2450 hsspi0 */
45 DMACH_SPI0_RX, /* s3c2443/2416/2450 hsspi0 */
46 DMACH_SPI1_TX, /* s3c2443/2450 hsspi1 */
47 DMACH_SPI1_RX, /* s3c2443/2450 hsspi1 */
48 DMACH_MAX, /* the end entry */
49 };
50
51 #endif /* __ASM_ARCH_DMA_H */