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
|
/* linux/arch/arm/mach-s3c6400/include/mach/dma.h
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* S3C6400 - DMA support
*/
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H __FILE__
#define S3C_DMA_CHANNELS (16)
/* see mach-s3c2410/dma.h for notes on dma channel numbers */
/* Note, for the S3C64XX architecture we keep the DMACH_
* defines in the order they are allocated to [S]DMA0/[S]DMA1
* so that is easy to do DHACH_ -> DMA controller conversion
*/
enum dma_ch {
/* DMA0/SDMA0 */
DMACH_UART0 = 0,
DMACH_UART0_SRC2,
DMACH_UART1,
DMACH_UART1_SRC2,
DMACH_UART2,
DMACH_UART2_SRC2,
DMACH_UART3,
DMACH_UART3_SRC2,
DMACH_PCM0_TX,
DMACH_PCM0_RX,
DMACH_I2S0_OUT,
DMACH_I2S0_IN,
DMACH_SPI0_TX,
DMACH_SPI0_RX,
DMACH_HSI_I2SV40_TX,
DMACH_HSI_I2SV40_RX,
/* DMA1/SDMA1 */
DMACH_PCM1_TX = 16,
DMACH_PCM1_RX,
DMACH_I2S1_OUT,
DMACH_I2S1_IN,
DMACH_SPI1_TX,
DMACH_SPI1_RX,
DMACH_AC97_PCMOUT,
DMACH_AC97_PCMIN,
DMACH_AC97_MICIN,
DMACH_PWM,
DMACH_IRDA,
DMACH_EXTERNAL,
DMACH_RES1,
DMACH_RES2,
DMACH_SECURITY_RX, /* SDMA1 only */
DMACH_SECURITY_TX, /* SDMA1 only */
DMACH_MAX /* the end */
};
static __inline__ bool s3c_dma_has_circular(void)
{
return true;
}
static inline bool samsung_dma_is_dmadev(void)
{
return false;
}
#define S3C2410_DMAF_CIRCULAR (1 << 0)
#include <plat/dma.h>
#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
struct s3c64xx_dma_buff;
/** s3c64xx_dma_buff - S3C64XX DMA buffer descriptor
* @next: Pointer to next buffer in queue or ring.
* @pw: Client provided identifier
* @lli: Pointer to hardware descriptor this buffer is associated with.
* @lli_dma: Hardare address of the descriptor.
*/
struct s3c64xx_dma_buff {
struct s3c64xx_dma_buff *next;
void *pw;
struct pl080s_lli *lli;
dma_addr_t lli_dma;
};
struct s3c64xx_dmac;
struct s3c2410_dma_chan {
unsigned char number; /* number of this dma channel */
unsigned char in_use; /* channel allocated */
unsigned char bit; /* bit for enable/disable/etc */
unsigned char hw_width;
unsigned char peripheral;
unsigned int flags;
enum s3c2410_dmasrc source;
dma_addr_t dev_addr;
struct s3c2410_dma_client *client;
struct s3c64xx_dmac *dmac; /* pointer to controller */
void __iomem *regs;
/* cdriver callbacks */
s3c2410_dma_cbfn_t callback_fn; /* buffer done callback */
s3c2410_dma_opfn_t op_fn; /* channel op callback */
/* buffer list and information */
struct s3c64xx_dma_buff *curr; /* current dma buffer */
struct s3c64xx_dma_buff *next; /* next buffer to load */
struct s3c64xx_dma_buff *end; /* end of queue */
/* note, when channel is running in circular mode, curr is the
* first buffer enqueued, end is the last and curr is where the
* last buffer-done event is set-at. The buffers are not freed
* and the last buffer hardware descriptor points back to the
* first.
*/
};
#include <plat/dma-core.h>
#endif /* __ASM_ARCH_IRQ_H */
|
