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#include <linux/regulator/machine.h>
30
31#include "generic.h"
32
33#define ICONTROL_MCP251x_nCS1	(15)
34#define ICONTROL_MCP251x_nCS2	(16)
35#define ICONTROL_MCP251x_nCS3	(17)
36#define ICONTROL_MCP251x_nCS4	(24)
37
38#define ICONTROL_MCP251x_nIRQ1	(74)
39#define ICONTROL_MCP251x_nIRQ2	(75)
40#define ICONTROL_MCP251x_nIRQ3	(76)
41#define ICONTROL_MCP251x_nIRQ4	(77)
42
43static struct pxa2xx_spi_chip mcp251x_chip_info1 = {
44	.tx_threshold   = 8,
45	.rx_threshold   = 128,
46	.dma_burst_size = 8,
47	.timeout        = 235,
48	.gpio_cs        = ICONTROL_MCP251x_nCS1
49};
50
51static struct pxa2xx_spi_chip mcp251x_chip_info2 = {
52	.tx_threshold   = 8,
53	.rx_threshold   = 128,
54	.dma_burst_size = 8,
55	.timeout        = 235,
56	.gpio_cs        = ICONTROL_MCP251x_nCS2
57};
58
59static struct pxa2xx_spi_chip mcp251x_chip_info3 = {
60	.tx_threshold   = 8,
61	.rx_threshold   = 128,
62	.dma_burst_size = 8,
63	.timeout        = 235,
64	.gpio_cs        = ICONTROL_MCP251x_nCS3
65};
66
67static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
68	.tx_threshold   = 8,
69	.rx_threshold   = 128,
70	.dma_burst_size = 8,
71	.timeout        = 235,
72	.gpio_cs        = ICONTROL_MCP251x_nCS4
73};
74
75static struct mcp251x_platform_data mcp251x_info = {
76	.oscillator_frequency = 16E6,
77};
78
79static struct spi_board_info mcp251x_board_info[] = {
80	{
81		.modalias        = "mcp2515",
82		.max_speed_hz    = 6500000,
83		.bus_num         = 3,
84		.chip_select     = 0,
85		.platform_data   = &mcp251x_info,
86		.controller_data = &mcp251x_chip_info1,
87		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1)
88	},
89	{
90		.modalias        = "mcp2515",
91		.max_speed_hz    = 6500000,
92		.bus_num         = 3,
93		.chip_select     = 1,
94		.platform_data   = &mcp251x_info,
95		.controller_data = &mcp251x_chip_info2,
96		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2)
97	},
98	{
99		.modalias        = "mcp2515",
100		.max_speed_hz    = 6500000,
101		.bus_num         = 4,
102		.chip_select     = 0,
103		.platform_data   = &mcp251x_info,
104		.controller_data = &mcp251x_chip_info3,
105		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3)
106	},
107	{
108		.modalias        = "mcp2515",
109		.max_speed_hz    = 6500000,
110		.bus_num         = 4,
111		.chip_select     = 1,
112		.platform_data   = &mcp251x_info,
113		.controller_data = &mcp251x_chip_info4,
114		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4)
115	}
116};
117
118static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {
119	.clock_enable   = CKEN_SSP3,
120	.num_chipselect = 2,
121	.enable_dma     = 1
122};
123
124static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {
125	.clock_enable   = CKEN_SSP4,
126	.num_chipselect = 2,
127	.enable_dma     = 1
128};
129
130struct platform_device pxa_spi_ssp3 = {
131	.name          = "pxa2xx-spi",
132	.id            = 3,
133	.dev           = {
134		.platform_data = &pxa_ssp3_spi_master_info,
135	}
136};
137
138struct platform_device pxa_spi_ssp4 = {
139	.name          = "pxa2xx-spi",
140	.id            = 4,
141	.dev           = {
142		.platform_data = &pxa_ssp4_spi_master_info,
143	}
144};
145
146static struct platform_device *icontrol_spi_devices[] __initdata = {
147	&pxa_spi_ssp3,
148	&pxa_spi_ssp4,
149};
150
151static mfp_cfg_t mfp_can_cfg[] __initdata = {
152	/* CAN CS lines */
153	GPIO15_GPIO,
154	GPIO16_GPIO,
155	GPIO17_GPIO,
156	GPIO24_GPIO,
157
158	/* SPI (SSP3) lines */
159	GPIO89_SSP3_SCLK,
160	GPIO91_SSP3_TXD,
161	GPIO92_SSP3_RXD,
162
163	/* SPI (SSP4) lines */
164	GPIO93_SSP4_SCLK,
165	GPIO95_SSP4_TXD,
166	GPIO96_SSP4_RXD,
167
168	/* CAN nIRQ lines */
169	GPIO74_GPIO | MFP_LPM_EDGE_RISE,
170	GPIO75_GPIO | MFP_LPM_EDGE_RISE,
171	GPIO76_GPIO | MFP_LPM_EDGE_RISE,
172	GPIO77_GPIO | MFP_LPM_EDGE_RISE
173};
174
175static void __init icontrol_can_init(void)
176{
177	pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
178	platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
179	spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
180}
181
182static void __init icontrol_init(void)
183{
184	mxm_8x10_barebones_init();
185	mxm_8x10_usb_host_init();
186	mxm_8x10_mmc_init();
187
188	icontrol_can_init();
189
190	regulator_has_full_constraints();
191}
192
193MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
194	.atag_offset	= 0x100,
195	.map_io		= pxa3xx_map_io,
196	.nr_irqs	= PXA_NR_IRQS,
197	.init_irq	= pxa3xx_init_irq,
198	.handle_irq	= pxa3xx_handle_irq,
199	.init_time	= pxa_timer_init,
200	.init_machine	= icontrol_init,
201	.restart	= pxa_restart,
202MACHINE_END
203