1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-pxa/icontrol.c
5 * Support for the iControl and SafeTcam platforms from TMT Services
6 * using the Embedian MXM-8x10 Computer on Module
8 * Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd.
10 * 2010-01-21 Hennie van der Merve <hvdmerwe@tmtservies.co.za>
13 #include <linux/irq.h>
14 #include <linux/platform_device.h>
15 #include <linux/property.h>
16 #include <linux/gpio/machine.h>
18 #include <asm/mach-types.h>
19 #include <asm/mach/arch.h>
24 #include <linux/spi/spi.h>
25 #include <linux/spi/pxa2xx_spi.h>
26 #include <linux/regulator/machine.h>
30 #define ICONTROL_MCP251x_nCS1 (15)
31 #define ICONTROL_MCP251x_nCS2 (16)
32 #define ICONTROL_MCP251x_nCS3 (17)
33 #define ICONTROL_MCP251x_nCS4 (24)
35 #define ICONTROL_MCP251x_nIRQ1 (74)
36 #define ICONTROL_MCP251x_nIRQ2 (75)
37 #define ICONTROL_MCP251x_nIRQ3 (76)
38 #define ICONTROL_MCP251x_nIRQ4 (77)
40 static struct pxa2xx_spi_chip mcp251x_chip_info1 = {
47 static struct pxa2xx_spi_chip mcp251x_chip_info2 = {
54 static struct pxa2xx_spi_chip mcp251x_chip_info3 = {
61 static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
68 static const struct property_entry mcp251x_properties[] = {
69 PROPERTY_ENTRY_U32("clock-frequency", 16000000),
73 static const struct software_node mcp251x_node = {
74 .properties = mcp251x_properties,
77 static struct spi_board_info mcp251x_board_info[] = {
79 .modalias = "mcp2515",
80 .max_speed_hz = 6500000,
83 .swnode = &mcp251x_node,
84 .controller_data = &mcp251x_chip_info1,
85 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1)
88 .modalias = "mcp2515",
89 .max_speed_hz = 6500000,
92 .swnode = &mcp251x_node,
93 .controller_data = &mcp251x_chip_info2,
94 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2)
97 .modalias = "mcp2515",
98 .max_speed_hz = 6500000,
101 .swnode = &mcp251x_node,
102 .controller_data = &mcp251x_chip_info3,
103 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3)
106 .modalias = "mcp2515",
107 .max_speed_hz = 6500000,
110 .swnode = &mcp251x_node,
111 .controller_data = &mcp251x_chip_info4,
112 .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4)
116 static struct pxa2xx_spi_controller pxa_ssp3_spi_master_info = {
121 static struct pxa2xx_spi_controller pxa_ssp4_spi_master_info = {
126 struct platform_device pxa_spi_ssp3 = {
127 .name = "pxa2xx-spi",
130 .platform_data = &pxa_ssp3_spi_master_info,
134 struct platform_device pxa_spi_ssp4 = {
135 .name = "pxa2xx-spi",
138 .platform_data = &pxa_ssp4_spi_master_info,
142 static struct gpiod_lookup_table pxa_ssp3_gpio_table = {
143 .dev_id = "pxa2xx-spi.3",
145 GPIO_LOOKUP_IDX("gpio-pxa", ICONTROL_MCP251x_nCS1, "cs", 0, GPIO_ACTIVE_LOW),
146 GPIO_LOOKUP_IDX("gpio-pxa", ICONTROL_MCP251x_nCS2, "cs", 1, GPIO_ACTIVE_LOW),
151 static struct gpiod_lookup_table pxa_ssp4_gpio_table = {
152 .dev_id = "pxa2xx-spi.4",
154 GPIO_LOOKUP_IDX("gpio-pxa", ICONTROL_MCP251x_nCS3, "cs", 0, GPIO_ACTIVE_LOW),
155 GPIO_LOOKUP_IDX("gpio-pxa", ICONTROL_MCP251x_nCS4, "cs", 1, GPIO_ACTIVE_LOW),
160 static struct platform_device *icontrol_spi_devices[] __initdata = {
165 static mfp_cfg_t mfp_can_cfg[] __initdata = {
172 /* SPI (SSP3) lines */
177 /* SPI (SSP4) lines */
183 GPIO74_GPIO | MFP_LPM_EDGE_RISE,
184 GPIO75_GPIO | MFP_LPM_EDGE_RISE,
185 GPIO76_GPIO | MFP_LPM_EDGE_RISE,
186 GPIO77_GPIO | MFP_LPM_EDGE_RISE
189 static void __init icontrol_can_init(void)
191 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
192 gpiod_add_lookup_table(&pxa_ssp3_gpio_table);
193 gpiod_add_lookup_table(&pxa_ssp4_gpio_table);
194 platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
195 spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
198 static void __init icontrol_init(void)
200 mxm_8x10_barebones_init();
201 mxm_8x10_usb_host_init();
206 regulator_has_full_constraints();
209 MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
210 .atag_offset = 0x100,
211 .map_io = pxa3xx_map_io,
212 .nr_irqs = PXA_NR_IRQS,
213 .init_irq = pxa3xx_init_irq,
214 .handle_irq = pxa3xx_handle_irq,
215 .init_time = pxa_timer_init,
216 .init_machine = icontrol_init,
217 .restart = pxa_restart,