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review.evervolv.com / android_kernel_htc_msm8960 / 5af52b51f76d8f8dce0e5b2a33c20b2231c8046d / . / arch / arm / mach-pxa / icontrol.c
blob: 771137fc1a82c6a7e276b183940511f7eb3a9641 [file] [log] [blame]
Edwin Peer1f3b5362010-02-05 18:31:48 +0200[diff] [blame]1/*
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>
27#include <mach/pxa2xx_spi.h>
28#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,
76 .model = CAN_MCP251X_MCP2515,
77 .board_specific_setup = NULL,
78 .power_enable = NULL,
79 .transceiver_enable = NULL
80};
81
82static struct spi_board_info mcp251x_board_info[] = {
83 {
84 .modalias = "mcp251x",
85 .max_speed_hz = 6500000,
86 .bus_num = 3,
87 .chip_select = 0,
88 .platform_data = &mcp251x_info,
89 .controller_data = &mcp251x_chip_info1,
90 .irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ1)
91 },
92 {
93 .modalias = "mcp251x",
94 .max_speed_hz = 6500000,
95 .bus_num = 3,
96 .chip_select = 1,
97 .platform_data = &mcp251x_info,
98 .controller_data = &mcp251x_chip_info2,
99 .irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ2)
100 },
101 {
102 .modalias = "mcp251x",
103 .max_speed_hz = 6500000,
104 .bus_num = 4,
105 .chip_select = 0,
106 .platform_data = &mcp251x_info,
107 .controller_data = &mcp251x_chip_info3,
108 .irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ3)
109 },
110 {
111 .modalias = "mcp251x",
112 .max_speed_hz = 6500000,
113 .bus_num = 4,
114 .chip_select = 1,
115 .platform_data = &mcp251x_info,
116 .controller_data = &mcp251x_chip_info4,
117 .irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ4)
118 }
119};
120
121static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {
122 .clock_enable = CKEN_SSP3,
123 .num_chipselect = 2,
124 .enable_dma = 1
125};
126
127static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {
128 .clock_enable = CKEN_SSP4,
129 .num_chipselect = 2,
130 .enable_dma = 1
131};
132
133struct platform_device pxa_spi_ssp3 = {
134 .name = "pxa2xx-spi",
135 .id = 3,
136 .dev = {
137 .platform_data = &pxa_ssp3_spi_master_info,
138 }
139};
140
141struct platform_device pxa_spi_ssp4 = {
142 .name = "pxa2xx-spi",
143 .id = 4,
144 .dev = {
145 .platform_data = &pxa_ssp4_spi_master_info,
146 }
147};
148
149static struct platform_device *icontrol_spi_devices[] __initdata = {
150 &pxa_spi_ssp3,
151 &pxa_spi_ssp4,
152};
153
154static mfp_cfg_t mfp_can_cfg[] __initdata = {
155 /* CAN CS lines */
156 GPIO15_GPIO,
157 GPIO16_GPIO,
158 GPIO17_GPIO,
159 GPIO24_GPIO,
160
161 /* SPI (SSP3) lines */
162 GPIO89_SSP3_SCLK,
163 GPIO91_SSP3_TXD,
164 GPIO92_SSP3_RXD,
165
166 /* SPI (SSP4) lines */
167 GPIO93_SSP4_SCLK,
168 GPIO95_SSP4_TXD,
169 GPIO96_SSP4_RXD,
170
171 /* CAN nIRQ lines */
172 GPIO74_GPIO | MFP_LPM_EDGE_RISE,
173 GPIO75_GPIO | MFP_LPM_EDGE_RISE,
174 GPIO76_GPIO | MFP_LPM_EDGE_RISE,
175 GPIO77_GPIO | MFP_LPM_EDGE_RISE
176};
177
178static void __init icontrol_can_init(void)
179{
180 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
181 platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
182 spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
183}
184
185static void __init icontrol_init(void)
186{
187 mxm_8x10_barebones_init();
188 mxm_8x10_usb_host_init();
189 mxm_8x10_mmc_init();
190
191 icontrol_can_init();
192}
193
194MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
195 .phys_io = 0x40000000,
196 .boot_params = 0xa0000100,
197 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
198 .map_io = pxa_map_io,
199 .init_irq = pxa3xx_init_irq,
200 .timer = &pxa_timer,
201 .init_machine = icontrol_init
202MACHINE_END