/*
   * linux/arch/arm/mach-pxa/icontrol.c
   *
   * Support for the iControl and SafeTcam platforms from TMT Services
   * using the Embedian MXM-8x10 Computer on Module
   *
   * Copyright (C) 2009 TMT Services & Supplies (Pty) Ltd.
   *
   * 2010-01-21 Hennie van der Merve <hvdmerwe@tmtservies.co.za>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/irq.h>
  #include <linux/platform_device.h>
  #include <linux/gpio.h>
  
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  
  #include <mach/pxa320.h>
  #include <mach/mxm8x10.h>
  
  #include <linux/spi/spi.h>

  #include <linux/spi/pxa2xx_spi.h>

  #include <linux/can/platform/mcp251x.h>

  #include <linux/regulator/machine.h>

  
  #include "generic.h"
  
  #define ICONTROL_MCP251x_nCS1	(15)
  #define ICONTROL_MCP251x_nCS2	(16)
  #define ICONTROL_MCP251x_nCS3	(17)
  #define ICONTROL_MCP251x_nCS4	(24)
  
  #define ICONTROL_MCP251x_nIRQ1	(74)
  #define ICONTROL_MCP251x_nIRQ2	(75)
  #define ICONTROL_MCP251x_nIRQ3	(76)
  #define ICONTROL_MCP251x_nIRQ4	(77)
  
  static struct pxa2xx_spi_chip mcp251x_chip_info1 = {
  	.tx_threshold   = 8,
  	.rx_threshold   = 128,
  	.dma_burst_size = 8,
  	.timeout        = 235,
  	.gpio_cs        = ICONTROL_MCP251x_nCS1
  };
  
  static struct pxa2xx_spi_chip mcp251x_chip_info2 = {
  	.tx_threshold   = 8,
  	.rx_threshold   = 128,
  	.dma_burst_size = 8,
  	.timeout        = 235,
  	.gpio_cs        = ICONTROL_MCP251x_nCS2
  };
  
  static struct pxa2xx_spi_chip mcp251x_chip_info3 = {
  	.tx_threshold   = 8,
  	.rx_threshold   = 128,
  	.dma_burst_size = 8,
  	.timeout        = 235,
  	.gpio_cs        = ICONTROL_MCP251x_nCS3
  };
  
  static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
  	.tx_threshold   = 8,
  	.rx_threshold   = 128,
  	.dma_burst_size = 8,
  	.timeout        = 235,
  	.gpio_cs        = ICONTROL_MCP251x_nCS4
  };
  
  static struct mcp251x_platform_data mcp251x_info = {
  	.oscillator_frequency = 16E6,

  };
  
  static struct spi_board_info mcp251x_board_info[] = {
  	{

  		.modalias        = "mcp2515",

  		.max_speed_hz    = 6500000,
  		.bus_num         = 3,
  		.chip_select     = 0,
  		.platform_data   = &mcp251x_info,
  		.controller_data = &mcp251x_chip_info1,

  		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1)

  	},
  	{

  		.modalias        = "mcp2515",

  		.max_speed_hz    = 6500000,
  		.bus_num         = 3,
  		.chip_select     = 1,
  		.platform_data   = &mcp251x_info,
  		.controller_data = &mcp251x_chip_info2,

  		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ2)

  	},
  	{

  		.modalias        = "mcp2515",

  		.max_speed_hz    = 6500000,
  		.bus_num         = 4,
  		.chip_select     = 0,
  		.platform_data   = &mcp251x_info,
  		.controller_data = &mcp251x_chip_info3,

  		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ3)

  	},
  	{

  		.modalias        = "mcp2515",

  		.max_speed_hz    = 6500000,
  		.bus_num         = 4,
  		.chip_select     = 1,
  		.platform_data   = &mcp251x_info,
  		.controller_data = &mcp251x_chip_info4,

  		.irq             = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ4)

  	}
  };
  
  static struct pxa2xx_spi_master pxa_ssp3_spi_master_info = {

  	.num_chipselect = 2,
  	.enable_dma     = 1
  };
  
  static struct pxa2xx_spi_master pxa_ssp4_spi_master_info = {

  	.num_chipselect = 2,
  	.enable_dma     = 1
  };
  
  struct platform_device pxa_spi_ssp3 = {
  	.name          = "pxa2xx-spi",
  	.id            = 3,
  	.dev           = {
  		.platform_data = &pxa_ssp3_spi_master_info,
  	}
  };
  
  struct platform_device pxa_spi_ssp4 = {
  	.name          = "pxa2xx-spi",
  	.id            = 4,
  	.dev           = {
  		.platform_data = &pxa_ssp4_spi_master_info,
  	}
  };
  
  static struct platform_device *icontrol_spi_devices[] __initdata = {
  	&pxa_spi_ssp3,
  	&pxa_spi_ssp4,
  };
  
  static mfp_cfg_t mfp_can_cfg[] __initdata = {
  	/* CAN CS lines */
  	GPIO15_GPIO,
  	GPIO16_GPIO,
  	GPIO17_GPIO,
  	GPIO24_GPIO,
  
  	/* SPI (SSP3) lines */
  	GPIO89_SSP3_SCLK,
  	GPIO91_SSP3_TXD,
  	GPIO92_SSP3_RXD,
  
  	/* SPI (SSP4) lines */
  	GPIO93_SSP4_SCLK,
  	GPIO95_SSP4_TXD,
  	GPIO96_SSP4_RXD,
  
  	/* CAN nIRQ lines */
  	GPIO74_GPIO | MFP_LPM_EDGE_RISE,
  	GPIO75_GPIO | MFP_LPM_EDGE_RISE,
  	GPIO76_GPIO | MFP_LPM_EDGE_RISE,
  	GPIO77_GPIO | MFP_LPM_EDGE_RISE
  };
  
  static void __init icontrol_can_init(void)
  {
  	pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_can_cfg));
  	platform_add_devices(ARRAY_AND_SIZE(icontrol_spi_devices));
  	spi_register_board_info(ARRAY_AND_SIZE(mcp251x_board_info));
  }
  
  static void __init icontrol_init(void)
  {
  	mxm_8x10_barebones_init();
  	mxm_8x10_usb_host_init();
  	mxm_8x10_mmc_init();
  
  	icontrol_can_init();

  
  	regulator_has_full_constraints();

  }
  
  MACHINE_START(ICONTROL, "iControl/SafeTcam boards using Embedian MXM-8x10 CoM")

  	.atag_offset	= 0x100,

  	.map_io		= pxa3xx_map_io,

  	.nr_irqs	= PXA_NR_IRQS,

  	.init_irq	= pxa3xx_init_irq,

  	.handle_irq	= pxa3xx_handle_irq,

  	.init_time	= pxa_timer_init,

  	.init_machine	= icontrol_init,
  	.restart	= pxa_restart,

  MACHINE_END