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authorBen Dooks <ben@simtec.co.uk>2009-03-10 19:57:26 -0400
committerBen Dooks <ben-linux@fluff.org>2009-05-18 11:29:21 -0400
commitfa7a7883fe5c647decee57a9c1b86a96408c5b26 (patch)
tree0525cb20ab7800edb2dc404fe4cd6b0364de34f1 /arch/arm/mach-s3c6400
parent97c1b145231730e62dd71921ec653315a1da3aad (diff)
[ARM] S3C64XX: DMA support
Add support for the DMA blocks in the S3C64XX series of CPUS, which are based on the ARM PL080 PrimeCell system. Unfortunately, these DMA controllers diverge from the PL080 design by adding another DMA controller register and configuration for OneNAND. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s3c6400')
-rw-r--r--arch/arm/mach-s3c6400/include/mach/dma.h59
1 files changed, 58 insertions, 1 deletions
diff --git a/arch/arm/mach-s3c6400/include/mach/dma.h b/arch/arm/mach-s3c6400/include/mach/dma.h
index 9771ac2cb07e..1067619f0ba0 100644
--- a/arch/arm/mach-s3c6400/include/mach/dma.h
+++ b/arch/arm/mach-s3c6400/include/mach/dma.h
@@ -11,6 +11,63 @@
11#ifndef __ASM_ARCH_DMA_H 11#ifndef __ASM_ARCH_DMA_H
12#define __ASM_ARCH_DMA_H __FILE__ 12#define __ASM_ARCH_DMA_H __FILE__
13 13
14/* currently nothing here, placeholder */ 14#define S3C_DMA_CHANNELS (16)
15
16/* see mach-s3c2410/dma.h for notes on dma channel numbers */
17
18/* Note, for the S3C64XX architecture we keep the DMACH_
19 * defines in the order they are allocated to [S]DMA0/[S]DMA1
20 * so that is easy to do DHACH_ -> DMA controller conversion
21 */
22enum dma_ch {
23 /* DMA0/SDMA0 */
24 DMACH_UART0 = 0,
25 DMACH_UART0_SRC2,
26 DMACH_UART1,
27 DMACH_UART1_SRC2,
28 DMACH_UART2,
29 DMACH_UART2_SRC2,
30 DMACH_UART3,
31 DMACH_UART3_SRC2,
32 DMACH_PCM0_TX,
33 DMACH_PCM0_RX,
34 DMACH_I2S0_OUT,
35 DMACH_I2S0_IN,
36 DMACH_SPI0_TX,
37 DMACH_SPI0_RX,
38 DMACH_HSI_I2SV40_TX,
39 DMACH_HSI_I2SV40_RX,
40
41 /* DMA1/SDMA1 */
42 DMACH_PCM1_TX = 16,
43 DMACH_PCM1_RX,
44 DMACH_I2S1_OUT,
45 DMACH_I2S1_IN,
46 DMACH_SPI1_TX,
47 DMACH_SPI1_RX,
48 DMACH_AC97_PCMOUT,
49 DMACH_AC97_PCMIN,
50 DMACH_AC97_MICIN,
51 DMACH_PWM,
52 DMACH_IRDA,
53 DMACH_EXTERNAL,
54 DMACH_RES1,
55 DMACH_RES2,
56 DMACH_SECURITY_RX, /* SDMA1 only */
57 DMACH_SECURITY_TX, /* SDMA1 only */
58 DMACH_MAX /* the end */
59};
60
61static __inline__ int s3c_dma_has_circular(void)
62{
63 /* we will be supporting ciruclar buffers as soon as we have DMA
64 * engine support.
65 */
66 return 1;
67}
68
69#define S3C2410_DMAF_CIRCULAR (1 << 0)
70
71#include <plat/dma.h>
15 72
16#endif /* __ASM_ARCH_IRQ_H */ 73#endif /* __ASM_ARCH_IRQ_H */