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Edwin Peer1f3b5362010-02-05 18:31:48 +02001/*
2 * linux/arch/arm/mach-pxa/icontrol.c
3 *
4 * Support for the iControl and SafeTcam platforms from TMT Services
5 * using the Embedian MXM-8x10 Computer on Module
6 *
7 * Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd.
8 *
9 * 2010-01-21 Hennie van der Merve <hvdmerwe@tmtservies.co.za>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#include <linux/irq.h>
17#include <linux/platform_device.h>
18#include <linux/gpio.h>
19
20#include <asm/mach-types.h>
21#include <asm/mach/arch.h>
22
23#include <mach/pxa320.h>
24#include <mach/mxm8x10.h>
25
26#include <linux/spi/spi.h>
Sebastian Andrzej Siewior8348c252010-11-22 17:12:15 -080027#include <linux/spi/pxa2xx_spi.h>
Edwin Peer1f3b5362010-02-05 18:31:48 +020028#include <linux/can/platform/mcp251x.h>
29
30#include "generic.h"
31
32#define ICONTROL_MCP251x_nCS1 (15)
33#define ICONTROL_MCP251x_nCS2 (16)
34#define ICONTROL_MCP251x_nCS3 (17)
35#define ICONTROL_MCP251x_nCS4 (24)
36
37#define ICONTROL_MCP251x_nIRQ1 (74)
38#define ICONTROL_MCP251x_nIRQ2 (75)
39#define ICONTROL_MCP251x_nIRQ3 (76)
40#define ICONTROL_MCP251x_nIRQ4 (77)
41
42static struct pxa2xx_spi_chip mcp251x_chip_info1 = {
43 .tx_threshold = 8,
44 .rx_threshold = 128,
45 .dma_burst_size = 8,
46 .timeout = 235,
47 .gpio_cs = ICONTROL_MCP251x_nCS1
48};
49
50static struct pxa2xx_spi_chip mcp251x_chip_info2 = {
51 .tx_threshold = 8,
52 .rx_threshold = 128,
53 .dma_burst_size = 8,
54 .timeout = 235,
55 .gpio_cs = ICONTROL_MCP251x_nCS2
56};
57
58static struct pxa2xx_spi_chip mcp251x_chip_info3 = {
59 .tx_threshold = 8,
60 .rx_threshold = 128,
61 .dma_burst_size = 8,
62 .timeout = 235,
63 .gpio_cs = ICONTROL_MCP251x_nCS3
64};
65
66static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
67 .tx_threshold = 8,
68 .rx_threshold = 128,
69 .dma_burst_size = 8,
70 .timeout = 235,
71 .gpio_cs = ICONTROL_MCP251x_nCS4
72};
73
74static struct mcp251x_platform_data mcp251x_info = {
75 .oscillator_frequency = 16E6,
Edwin Peer1f3b5362010-02-05 18:31:48 +020076};
77
78static struct spi_board_info mcp251x_board_info[] = {
79 {
Marc Zyngiere4466302010-03-29 08:57:56 +000080 .modalias = "mcp2515",
Edwin Peer1f3b5362010-02-05 18:31:48 +020081 .max_speed_hz = 6500000,
82 .bus_num = 3,
83 .chip_select = 0,
84 .platform_data = &mcp251x_info,
85 .controller_data = &mcp251x_chip_info1,
Haojian Zhuang4929f5a2011-10-10 16:03:51 +080086 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1)
Edwin Peer1f3b5362010-02-05 18:31:48 +020087 },
88 {
Marc Zyngiere4466302010-03-29 08:57:56 +000089 .modalias = "mcp2515",
Edwin Peer1f3b5362010-02-05 18:31:48 +020090 .max_speed_hz = 6500000,
91 .bus_num = 3,
92 .chip_select = 1,
93 .platform_data = &mcp251x_info,
94 .controller_data = &mcp251x_chip_info2,
Haojian Zhuang4929f5a2011-10-10 16:03:51 +080095 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2)
Edwin Peer1f3b5362010-02-05 18:31:48 +020096 },
97 {
Marc Zyngiere4466302010-03-29 08:57:56 +000098 .modalias = "mcp2515",
Edwin Peer1f3b5362010-02-05 18:31:48 +020099 .max_speed_hz = 6500000,
100 .bus_num = 4,
101 .chip_select = 0,
102 .platform_data = &mcp251x_info,
103 .controller_data = &mcp251x_chip_info3,
Haojian Zhuang4929f5a2011-10-10 16:03:51 +0800104 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3)
Edwin Peer1f3b5362010-02-05 18:31:48 +0200105 },
106 {
Marc Zyngiere4466302010-03-29 08:57:56 +0000107 .modalias = "mcp2515",
Edwin Peer1f3b5362010-02-05 18:31:48 +0200108 .max_speed_hz = 6500000,
109 .bus_num = 4,
110 .chip_select = 1,
111 .platform_data = &mcp251x_info,
112 .controller_data = &mcp251x_chip_info4,
Haojian Zhuang4929f5a2011-10-10 16:03:51 +0800113 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4)
Edwin Peer1f3b5362010-02-05 18:31:48 +0200114 }
115};
116
117static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {
118 .clock_enable = CKEN_SSP3,
119 .num_chipselect = 2,
120 .enable_dma = 1
121};
122
123static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {
124 .clock_enable = CKEN_SSP4,
125 .num_chipselect = 2,
126 .enable_dma = 1
127};
128
129struct platform_device pxa_spi_ssp3 = {
130 .name = "pxa2xx-spi",
131 .id = 3,
132 .dev = {
133 .platform_data = &pxa_ssp3_spi_master_info,
134 }
135};
136
137struct platform_device pxa_spi_ssp4 = {
138 .name = "pxa2xx-spi",
139 .id = 4,
140 .dev = {
141 .platform_data = &pxa_ssp4_spi_master_info,
142 }
143};
144
145static struct platform_device *icontrol_spi_devices[] __initdata = {
146 &pxa_spi_ssp3,
147 &pxa_spi_ssp4,
148};
149
150static mfp_cfg_t mfp_can_cfg[] __initdata = {
151 /* CAN CS lines */
152 GPIO15_GPIO,
153 GPIO16_GPIO,
154 GPIO17_GPIO,
155 GPIO24_GPIO,
156
157 /* SPI (SSP3) lines */
158 GPIO89_SSP3_SCLK,
159 GPIO91_SSP3_TXD,
160 GPIO92_SSP3_RXD,
161
162 /* SPI (SSP4) lines */
163 GPIO93_SSP4_SCLK,
164 GPIO95_SSP4_TXD,
165 GPIO96_SSP4_RXD,
166
167 /* CAN nIRQ lines */
168 GPIO74_GPIO | MFP_LPM_EDGE_RISE,
169 GPIO75_GPIO | MFP_LPM_EDGE_RISE,
170 GPIO76_GPIO | MFP_LPM_EDGE_RISE,
171 GPIO77_GPIO | MFP_LPM_EDGE_RISE
172};
173
174static void __init icontrol_can_init(void)
175{
176 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
177 platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
178 spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
179}
180
181static void __init icontrol_init(void)
182{
183 mxm_8x10_barebones_init();
184 mxm_8x10_usb_host_init();
185 mxm_8x10_mmc_init();
186
187 icontrol_can_init();
188}
189
190MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
Nicolas Pitre7375aba2011-07-05 22:38:15 -0400191 .atag_offset = 0x100,
Marek Vasut851982c2010-10-11 02:20:19 +0200192 .map_io = pxa3xx_map_io,
Rob Herring4e611092012-01-03 16:53:48 -0600193 .nr_irqs = PXA_NR_IRQS,
Edwin Peer1f3b5362010-02-05 18:31:48 +0200194 .init_irq = pxa3xx_init_irq,
Eric Miao8a97ae22011-05-18 21:30:04 +0800195 .handle_irq = pxa3xx_handle_irq,
Stephen Warren6bb27d72012-11-08 12:40:59 -0700196 .init_time = pxa_timer_init,
Russell King271a74f2011-11-04 14:15:53 +0000197 .init_machine = icontrol_init,
198 .restart = pxa_restart,
Edwin Peer1f3b5362010-02-05 18:31:48 +0200199MACHINE_END