Edwin Peer | 1f3b536 | 2010-02-05 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> |
Sebastian Andrzej Siewior | 8348c25 | 2010-11-22 17:12:15 -0800 | [diff] [blame] | 27 | #include <linux/spi/pxa2xx_spi.h> |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 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, |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 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 | { |
Marc Zyngier | e446630 | 2010-03-29 08:57:56 +0000 | [diff] [blame] | 83 | .modalias = "mcp2515", |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 84 | .max_speed_hz = 6500000, |
| 85 | .bus_num = 3, |
| 86 | .chip_select = 0, |
| 87 | .platform_data = &mcp251x_info, |
| 88 | .controller_data = &mcp251x_chip_info1, |
Haojian Zhuang | 4929f5a | 2011-10-10 16:03:51 +0800 | [diff] [blame] | 89 | .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1) |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 90 | }, |
| 91 | { |
Marc Zyngier | e446630 | 2010-03-29 08:57:56 +0000 | [diff] [blame] | 92 | .modalias = "mcp2515", |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 93 | .max_speed_hz = 6500000, |
| 94 | .bus_num = 3, |
| 95 | .chip_select = 1, |
| 96 | .platform_data = &mcp251x_info, |
| 97 | .controller_data = &mcp251x_chip_info2, |
Haojian Zhuang | 4929f5a | 2011-10-10 16:03:51 +0800 | [diff] [blame] | 98 | .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2) |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 99 | }, |
| 100 | { |
Marc Zyngier | e446630 | 2010-03-29 08:57:56 +0000 | [diff] [blame] | 101 | .modalias = "mcp2515", |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 102 | .max_speed_hz = 6500000, |
| 103 | .bus_num = 4, |
| 104 | .chip_select = 0, |
| 105 | .platform_data = &mcp251x_info, |
| 106 | .controller_data = &mcp251x_chip_info3, |
Haojian Zhuang | 4929f5a | 2011-10-10 16:03:51 +0800 | [diff] [blame] | 107 | .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3) |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 108 | }, |
| 109 | { |
Marc Zyngier | e446630 | 2010-03-29 08:57:56 +0000 | [diff] [blame] | 110 | .modalias = "mcp2515", |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 111 | .max_speed_hz = 6500000, |
| 112 | .bus_num = 4, |
| 113 | .chip_select = 1, |
| 114 | .platform_data = &mcp251x_info, |
| 115 | .controller_data = &mcp251x_chip_info4, |
Haojian Zhuang | 4929f5a | 2011-10-10 16:03:51 +0800 | [diff] [blame] | 116 | .irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4) |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 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") |
Nicolas Pitre | 7375aba | 2011-07-05 22:38:15 -0400 | [diff] [blame] | 194 | .atag_offset = 0x100, |
Marek Vasut | 851982c | 2010-10-11 02:20:19 +0200 | [diff] [blame] | 195 | .map_io = pxa3xx_map_io, |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 196 | .init_irq = pxa3xx_init_irq, |
Eric Miao | 8a97ae2 | 2011-05-18 21:30:04 +0800 | [diff] [blame] | 197 | .handle_irq = pxa3xx_handle_irq, |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 198 | .timer = &pxa_timer, |
Russell King | 271a74f | 2011-11-04 14:15:53 +0000 | [diff] [blame] | 199 | .init_machine = icontrol_init, |
| 200 | .restart = pxa_restart, |
Edwin Peer | 1f3b536 | 2010-02-05 18:31:48 +0200 | [diff] [blame] | 201 | MACHINE_END |