202 lines
4.8 KiB
C
202 lines
4.8 KiB
C
/*
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* linux/arch/arm/mach-pxa/icontrol.c
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*
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* Support for the iControl and SafeTcam platforms from TMT Services
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* using the Embedian MXM-8x10 Computer on Module
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*
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* Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd.
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*
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* 2010-01-21 Hennie van der Merve <hvdmerwe@tmtservies.co.za>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/irq.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/pxa320.h>
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#include <mach/mxm8x10.h>
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#include <linux/spi/spi.h>
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#include <mach/pxa2xx_spi.h>
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#include <linux/can/platform/mcp251x.h>
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#include "generic.h"
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#define ICONTROL_MCP251x_nCS1 (15)
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#define ICONTROL_MCP251x_nCS2 (16)
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#define ICONTROL_MCP251x_nCS3 (17)
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#define ICONTROL_MCP251x_nCS4 (24)
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#define ICONTROL_MCP251x_nIRQ1 (74)
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#define ICONTROL_MCP251x_nIRQ2 (75)
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#define ICONTROL_MCP251x_nIRQ3 (76)
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#define ICONTROL_MCP251x_nIRQ4 (77)
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static struct pxa2xx_spi_chip mcp251x_chip_info1 = {
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.tx_threshold = 8,
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.rx_threshold = 128,
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.dma_burst_size = 8,
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.timeout = 235,
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.gpio_cs = ICONTROL_MCP251x_nCS1
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};
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static struct pxa2xx_spi_chip mcp251x_chip_info2 = {
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.tx_threshold = 8,
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.rx_threshold = 128,
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.dma_burst_size = 8,
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.timeout = 235,
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.gpio_cs = ICONTROL_MCP251x_nCS2
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};
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static struct pxa2xx_spi_chip mcp251x_chip_info3 = {
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.tx_threshold = 8,
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.rx_threshold = 128,
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.dma_burst_size = 8,
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.timeout = 235,
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.gpio_cs = ICONTROL_MCP251x_nCS3
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};
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static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
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.tx_threshold = 8,
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.rx_threshold = 128,
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.dma_burst_size = 8,
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.timeout = 235,
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.gpio_cs = ICONTROL_MCP251x_nCS4
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};
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static struct mcp251x_platform_data mcp251x_info = {
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.oscillator_frequency = 16E6,
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.board_specific_setup = NULL,
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.power_enable = NULL,
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.transceiver_enable = NULL
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};
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static struct spi_board_info mcp251x_board_info[] = {
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{
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.modalias = "mcp2515",
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.max_speed_hz = 6500000,
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.bus_num = 3,
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.chip_select = 0,
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.platform_data = &mcp251x_info,
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.controller_data = &mcp251x_chip_info1,
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.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ1)
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},
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{
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.modalias = "mcp2515",
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.max_speed_hz = 6500000,
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.bus_num = 3,
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.chip_select = 1,
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.platform_data = &mcp251x_info,
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.controller_data = &mcp251x_chip_info2,
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.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ2)
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},
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{
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.modalias = "mcp2515",
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.max_speed_hz = 6500000,
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.bus_num = 4,
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.chip_select = 0,
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.platform_data = &mcp251x_info,
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.controller_data = &mcp251x_chip_info3,
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.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ3)
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},
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{
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.modalias = "mcp2515",
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.max_speed_hz = 6500000,
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.bus_num = 4,
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.chip_select = 1,
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.platform_data = &mcp251x_info,
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.controller_data = &mcp251x_chip_info4,
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.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ4)
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}
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};
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static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {
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.clock_enable = CKEN_SSP3,
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.num_chipselect = 2,
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.enable_dma = 1
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};
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static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {
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.clock_enable = CKEN_SSP4,
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.num_chipselect = 2,
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.enable_dma = 1
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};
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struct platform_device pxa_spi_ssp3 = {
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.name = "pxa2xx-spi",
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.id = 3,
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.dev = {
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.platform_data = &pxa_ssp3_spi_master_info,
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}
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};
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struct platform_device pxa_spi_ssp4 = {
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.name = "pxa2xx-spi",
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.id = 4,
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.dev = {
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.platform_data = &pxa_ssp4_spi_master_info,
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}
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};
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static struct platform_device *icontrol_spi_devices[] __initdata = {
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&pxa_spi_ssp3,
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&pxa_spi_ssp4,
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};
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static mfp_cfg_t mfp_can_cfg[] __initdata = {
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/* CAN CS lines */
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GPIO15_GPIO,
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GPIO16_GPIO,
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GPIO17_GPIO,
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GPIO24_GPIO,
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/* SPI (SSP3) lines */
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GPIO89_SSP3_SCLK,
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GPIO91_SSP3_TXD,
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GPIO92_SSP3_RXD,
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/* SPI (SSP4) lines */
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GPIO93_SSP4_SCLK,
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GPIO95_SSP4_TXD,
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GPIO96_SSP4_RXD,
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/* CAN nIRQ lines */
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GPIO74_GPIO | MFP_LPM_EDGE_RISE,
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GPIO75_GPIO | MFP_LPM_EDGE_RISE,
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GPIO76_GPIO | MFP_LPM_EDGE_RISE,
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GPIO77_GPIO | MFP_LPM_EDGE_RISE
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};
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static void __init icontrol_can_init(void)
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{
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pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
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platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
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spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
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}
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static void __init icontrol_init(void)
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{
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mxm_8x10_barebones_init();
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mxm_8x10_usb_host_init();
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mxm_8x10_mmc_init();
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icontrol_can_init();
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}
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MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")
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.phys_io = 0x40000000,
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.boot_params = 0xa0000100,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.map_io = pxa_map_io,
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.init_irq = pxa3xx_init_irq,
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.timer = &pxa_timer,
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.init_machine = icontrol_init
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MACHINE_END
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