Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6
[linux-2.6.git] / arch / arm / mach-pxa / icontrol.c
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 <linux/spi/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
42 static 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
50 static 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
58 static 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
66 static 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
74 static struct mcp251x_platform_data mcp251x_info = {
75         .oscillator_frequency = 16E6,
76         .board_specific_setup = NULL,
77         .power_enable         = NULL,
78         .transceiver_enable   = NULL
79 };
80
81 static struct spi_board_info mcp251x_board_info[] = {
82         {
83                 .modalias        = "mcp2515",
84                 .max_speed_hz    = 6500000,
85                 .bus_num         = 3,
86                 .chip_select     = 0,
87                 .platform_data   = &mcp251x_info,
88                 .controller_data = &mcp251x_chip_info1,
89                 .irq             = gpio_to_irq(ICONTROL_MCP251x_nIRQ1)
90         },
91         {
92                 .modalias        = "mcp2515",
93                 .max_speed_hz    = 6500000,
94                 .bus_num         = 3,
95                 .chip_select     = 1,
96                 .platform_data   = &mcp251x_info,
97                 .controller_data = &mcp251x_chip_info2,
98                 .irq             = gpio_to_irq(ICONTROL_MCP251x_nIRQ2)
99         },
100         {
101                 .modalias        = "mcp2515",
102                 .max_speed_hz    = 6500000,
103                 .bus_num         = 4,
104                 .chip_select     = 0,
105                 .platform_data   = &mcp251x_info,
106                 .controller_data = &mcp251x_chip_info3,
107                 .irq             = gpio_to_irq(ICONTROL_MCP251x_nIRQ3)
108         },
109         {
110                 .modalias        = "mcp2515",
111                 .max_speed_hz    = 6500000,
112                 .bus_num         = 4,
113                 .chip_select     = 1,
114                 .platform_data   = &mcp251x_info,
115                 .controller_data = &mcp251x_chip_info4,
116                 .irq             = gpio_to_irq(ICONTROL_MCP251x_nIRQ4)
117         }
118 };
119
120 static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {
121         .clock_enable   = CKEN_SSP3,
122         .num_chipselect = 2,
123         .enable_dma     = 1
124 };
125
126 static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {
127         .clock_enable   = CKEN_SSP4,
128         .num_chipselect = 2,
129         .enable_dma     = 1
130 };
131
132 struct platform_device pxa_spi_ssp3 = {
133         .name          = "pxa2xx-spi",
134         .id            = 3,
135         .dev           = {
136                 .platform_data = &pxa_ssp3_spi_master_info,
137         }
138 };
139
140 struct platform_device pxa_spi_ssp4 = {
141         .name          = "pxa2xx-spi",
142         .id            = 4,
143         .dev           = {
144                 .platform_data = &pxa_ssp4_spi_master_info,
145         }
146 };
147
148 static struct platform_device *icontrol_spi_devices[] __initdata = {
149         &pxa_spi_ssp3,
150         &pxa_spi_ssp4,
151 };
152
153 static mfp_cfg_t mfp_can_cfg[] __initdata = {
154         /* CAN CS lines */
155         GPIO15_GPIO,
156         GPIO16_GPIO,
157         GPIO17_GPIO,
158         GPIO24_GPIO,
159
160         /* SPI (SSP3) lines */
161         GPIO89_SSP3_SCLK,
162         GPIO91_SSP3_TXD,
163         GPIO92_SSP3_RXD,
164
165         /* SPI (SSP4) lines */
166         GPIO93_SSP4_SCLK,
167         GPIO95_SSP4_TXD,
168         GPIO96_SSP4_RXD,
169
170         /* CAN nIRQ lines */
171         GPIO74_GPIO | MFP_LPM_EDGE_RISE,
172         GPIO75_GPIO | MFP_LPM_EDGE_RISE,
173         GPIO76_GPIO | MFP_LPM_EDGE_RISE,
174         GPIO77_GPIO | MFP_LPM_EDGE_RISE
175 };
176
177 static void __init icontrol_can_init(void)
178 {
179         pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
180         platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
181         spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
182 }
183
184 static void __init icontrol_init(void)
185 {
186         mxm_8x10_barebones_init();
187         mxm_8x10_usb_host_init();
188         mxm_8x10_mmc_init();
189
190         icontrol_can_init();
191 }
192
193 MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
194         .boot_params    = 0xa0000100,
195         .map_io         = pxa3xx_map_io,
196         .init_irq       = pxa3xx_init_irq,
197         .timer          = &pxa_timer,
198         .init_machine   = icontrol_init
199 MACHINE_END