icontrol.c
4.74 KB
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
/*
* linux/arch/arm/mach-pxa/icontrol.c
*
* Support for the iControl and SafeTcam platforms from TMT Services
* using the Embedian MXM-8x10 Computer on Module
*
* Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd.
*
* 2010-01-21 Hennie van der Merve <hvdmerwe@tmtservies.co.za>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/pxa320.h>
#include <mach/mxm8x10.h>
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/can/platform/mcp251x.h>
#include "generic.h"
#define ICONTROL_MCP251x_nCS1 (15)
#define ICONTROL_MCP251x_nCS2 (16)
#define ICONTROL_MCP251x_nCS3 (17)
#define ICONTROL_MCP251x_nCS4 (24)
#define ICONTROL_MCP251x_nIRQ1 (74)
#define ICONTROL_MCP251x_nIRQ2 (75)
#define ICONTROL_MCP251x_nIRQ3 (76)
#define ICONTROL_MCP251x_nIRQ4 (77)
static struct pxa2xx_spi_chip mcp251x_chip_info1 = {
.tx_threshold = 8,
.rx_threshold = 128,
.dma_burst_size = 8,
.timeout = 235,
.gpio_cs = ICONTROL_MCP251x_nCS1
};
static struct pxa2xx_spi_chip mcp251x_chip_info2 = {
.tx_threshold = 8,
.rx_threshold = 128,
.dma_burst_size = 8,
.timeout = 235,
.gpio_cs = ICONTROL_MCP251x_nCS2
};
static struct pxa2xx_spi_chip mcp251x_chip_info3 = {
.tx_threshold = 8,
.rx_threshold = 128,
.dma_burst_size = 8,
.timeout = 235,
.gpio_cs = ICONTROL_MCP251x_nCS3
};
static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
.tx_threshold = 8,
.rx_threshold = 128,
.dma_burst_size = 8,
.timeout = 235,
.gpio_cs = ICONTROL_MCP251x_nCS4
};
static struct mcp251x_platform_data mcp251x_info = {
.oscillator_frequency = 16E6,
};
static struct spi_board_info mcp251x_board_info[] = {
{
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 3,
.chip_select = 0,
.platform_data = &mcp251x_info,
.controller_data = &mcp251x_chip_info1,
.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1)
},
{
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 3,
.chip_select = 1,
.platform_data = &mcp251x_info,
.controller_data = &mcp251x_chip_info2,
.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2)
},
{
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 4,
.chip_select = 0,
.platform_data = &mcp251x_info,
.controller_data = &mcp251x_chip_info3,
.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3)
},
{
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 4,
.chip_select = 1,
.platform_data = &mcp251x_info,
.controller_data = &mcp251x_chip_info4,
.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4)
}
};
static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {
.clock_enable = CKEN_SSP3,
.num_chipselect = 2,
.enable_dma = 1
};
static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {
.clock_enable = CKEN_SSP4,
.num_chipselect = 2,
.enable_dma = 1
};
struct platform_device pxa_spi_ssp3 = {
.name = "pxa2xx-spi",
.id = 3,
.dev = {
.platform_data = &pxa_ssp3_spi_master_info,
}
};
struct platform_device pxa_spi_ssp4 = {
.name = "pxa2xx-spi",
.id = 4,
.dev = {
.platform_data = &pxa_ssp4_spi_master_info,
}
};
static struct platform_device *icontrol_spi_devices[] __initdata = {
&pxa_spi_ssp3,
&pxa_spi_ssp4,
};
static mfp_cfg_t mfp_can_cfg[] __initdata = {
/* CAN CS lines */
GPIO15_GPIO,
GPIO16_GPIO,
GPIO17_GPIO,
GPIO24_GPIO,
/* SPI (SSP3) lines */
GPIO89_SSP3_SCLK,
GPIO91_SSP3_TXD,
GPIO92_SSP3_RXD,
/* SPI (SSP4) lines */
GPIO93_SSP4_SCLK,
GPIO95_SSP4_TXD,
GPIO96_SSP4_RXD,
/* CAN nIRQ lines */
GPIO74_GPIO | MFP_LPM_EDGE_RISE,
GPIO75_GPIO | MFP_LPM_EDGE_RISE,
GPIO76_GPIO | MFP_LPM_EDGE_RISE,
GPIO77_GPIO | MFP_LPM_EDGE_RISE
};
static void __init icontrol_can_init(void)
{
pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
}
static void __init icontrol_init(void)
{
mxm_8x10_barebones_init();
mxm_8x10_usb_host_init();
mxm_8x10_mmc_init();
icontrol_can_init();
}
MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
.atag_offset = 0x100,
.map_io = pxa3xx_map_io,
.nr_irqs = PXA_NR_IRQS,
.init_irq = pxa3xx_init_irq,
.handle_irq = pxa3xx_handle_irq,
.init_time = pxa_timer_init,
.init_machine = icontrol_init,
.restart = pxa_restart,
MACHINE_END