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
135
136
|
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Per Forlin <per.forlin@stericsson.com> for ST-Ericsson
* Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson
* Author: Rabin Vincent <rabinv.vincent@stericsson.com> for ST-Ericsson
*
* License terms: GNU General Public License (GPL), version 2
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <plat/ste_dma40.h>
#include <mach/setup.h>
#include <mach/hardware.h>
#include "ste-dma40-db5500.h"
static struct resource dma40_resources[] = {
[0] = {
.start = U5500_DMA_BASE,
.end = U5500_DMA_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
.name = "base",
},
[1] = {
.start = U5500_DMA_LCPA_BASE,
.end = U5500_DMA_LCPA_BASE + 2 * SZ_1K - 1,
.flags = IORESOURCE_MEM,
.name = "lcpa",
},
[2] = {
.start = IRQ_DB5500_DMA,
.end = IRQ_DB5500_DMA,
.flags = IORESOURCE_IRQ
}
};
/* Default configuration for physical memcpy */
static struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
.mode = STEDMA40_MODE_PHYSICAL,
.dir = STEDMA40_MEM_TO_MEM,
.src_info.data_width = STEDMA40_BYTE_WIDTH,
.src_info.psize = STEDMA40_PSIZE_PHY_1,
.src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
.dst_info.data_width = STEDMA40_BYTE_WIDTH,
.dst_info.psize = STEDMA40_PSIZE_PHY_1,
.dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
};
/* Default configuration for logical memcpy */
static struct stedma40_chan_cfg dma40_memcpy_conf_log = {
.dir = STEDMA40_MEM_TO_MEM,
.src_info.data_width = STEDMA40_BYTE_WIDTH,
.src_info.psize = STEDMA40_PSIZE_LOG_1,
.src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
.dst_info.data_width = STEDMA40_BYTE_WIDTH,
.dst_info.psize = STEDMA40_PSIZE_LOG_1,
.dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
};
/*
* Mapping between soruce event lines and physical device address This was
* created assuming that the event line is tied to a device and therefore the
* address is constant, however this is not true for at least USB, and the
* values are just placeholders for USB. This table is preserved and used for
* now.
*/
static const dma_addr_t dma40_rx_map[DB5500_DMA_NR_DEV] = {
[DB5500_DMA_DEV24_SDMMC0_RX] = -1,
[DB5500_DMA_DEV38_USB_OTG_IEP_8] = -1,
[DB5500_DMA_DEV23_USB_OTG_IEP_7_15] = -1,
[DB5500_DMA_DEV22_USB_OTG_IEP_6_14] = -1,
[DB5500_DMA_DEV21_USB_OTG_IEP_5_13] = -1,
[DB5500_DMA_DEV20_USB_OTG_IEP_4_12] = -1,
[DB5500_DMA_DEV6_USB_OTG_IEP_3_11] = -1,
[DB5500_DMA_DEV5_USB_OTG_IEP_2_10] = -1,
[DB5500_DMA_DEV4_USB_OTG_IEP_1_9] = -1,
};
/* Mapping between destination event lines and physical device address */
static const dma_addr_t dma40_tx_map[DB5500_DMA_NR_DEV] = {
[DB5500_DMA_DEV24_SDMMC0_TX] = -1,
[DB5500_DMA_DEV38_USB_OTG_OEP_8] = -1,
[DB5500_DMA_DEV23_USB_OTG_OEP_7_15] = -1,
[DB5500_DMA_DEV22_USB_OTG_OEP_6_14] = -1,
[DB5500_DMA_DEV21_USB_OTG_OEP_5_13] = -1,
[DB5500_DMA_DEV20_USB_OTG_OEP_4_12] = -1,
[DB5500_DMA_DEV6_USB_OTG_OEP_3_11] = -1,
[DB5500_DMA_DEV5_USB_OTG_OEP_2_10] = -1,
[DB5500_DMA_DEV4_USB_OTG_OEP_1_9] = -1,
};
static int dma40_memcpy_event[] = {
DB5500_DMA_MEMCPY_TX_1,
DB5500_DMA_MEMCPY_TX_2,
DB5500_DMA_MEMCPY_TX_3,
DB5500_DMA_MEMCPY_TX_4,
DB5500_DMA_MEMCPY_TX_5,
};
static struct stedma40_platform_data dma40_plat_data = {
.dev_len = ARRAY_SIZE(dma40_rx_map),
.dev_rx = dma40_rx_map,
.dev_tx = dma40_tx_map,
.memcpy = dma40_memcpy_event,
.memcpy_len = ARRAY_SIZE(dma40_memcpy_event),
.memcpy_conf_phy = &dma40_memcpy_conf_phy,
.memcpy_conf_log = &dma40_memcpy_conf_log,
.disabled_channels = {-1},
};
static struct platform_device dma40_device = {
.dev = {
.platform_data = &dma40_plat_data,
},
.name = "dma40",
.id = 0,
.num_resources = ARRAY_SIZE(dma40_resources),
.resource = dma40_resources
};
void __init db5500_dma_init(void)
{
int ret;
ret = platform_device_register(&dma40_device);
if (ret)
dev_err(&dma40_device.dev, "unable to register device: %d\n", ret);
}
|
