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kernel/linux-imx6_3.14.28/arch/arm/mach-pxa/xcep.c 4.59 KB
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  /*  linux/arch/arm/mach-pxa/xcep.c
   *
   *  Support for the Iskratel Electronics XCEP platform as used in
   *  the Libera instruments from Instrumentation Technologies.
   *
   *  Author:     Ales Bardorfer <ales@i-tech.si>
   *  Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
   *  Contributions by: Matej Kenda <matej.kenda@i-tech.si>
   *  Created:    June 2006
   *  Copyright:  (C) 2006-2009 Instrumentation Technologies
   *
   *  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/platform_device.h>
  #include <linux/i2c.h>
  #include <linux/i2c/pxa-i2c.h>
  #include <linux/smc91x.h>
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
  #include <linux/mtd/physmap.h>
  
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/irq.h>
  #include <asm/mach/map.h>
  
  #include <mach/hardware.h>
  #include <mach/pxa25x.h>
  #include <mach/smemc.h>
  
  #include "generic.h"
  
  #define XCEP_ETH_PHYS		(PXA_CS3_PHYS + 0x00000300)
  #define XCEP_ETH_PHYS_END	(PXA_CS3_PHYS + 0x000fffff)
  #define XCEP_ETH_ATTR		(PXA_CS3_PHYS + 0x02000000)
  #define XCEP_ETH_ATTR_END	(PXA_CS3_PHYS + 0x020fffff)
  #define XCEP_ETH_IRQ		IRQ_GPIO0
  
  /*  XCEP CPLD base */
  #define XCEP_CPLD_BASE		0xf0000000
  
  
  /* Flash partitions. */
  
  static struct mtd_partition xcep_partitions[] = {
  	{
  		.name =		"Bootloader",
  		.size =		0x00040000,
  		.offset =	0,
  		.mask_flags =	MTD_WRITEABLE
  	}, {
  		.name =		"Bootloader ENV",
  		.size =		0x00040000,
  		.offset =	0x00040000,
  		.mask_flags =	MTD_WRITEABLE
  	}, {
  		.name =		"Kernel",
  		.size =		0x00100000,
  		.offset =	0x00080000,
  	}, {
  		.name =		"Rescue fs",
  		.size =		0x00280000,
  		.offset =	0x00180000,
  	}, {
  		.name =		"Filesystem",
  		.size =		MTDPART_SIZ_FULL,
  		.offset =	0x00400000
  	}
  };
  
  static struct physmap_flash_data xcep_flash_data[] = {
  	{
  		.width		= 4,		/* bankwidth in bytes */
  		.parts		= xcep_partitions,
  		.nr_parts	= ARRAY_SIZE(xcep_partitions)
  	}
  };
  
  static struct resource flash_resource = {
  	.start	= PXA_CS0_PHYS,
  	.end	= PXA_CS0_PHYS + SZ_32M - 1,
  	.flags	= IORESOURCE_MEM,
  };
  
  static struct platform_device flash_device = {
  	.name	= "physmap-flash",
  	.id	= 0,
  	.dev 	= {
  		.platform_data = xcep_flash_data,
  	},
  	.resource = &flash_resource,
  	.num_resources = 1,
  };
  
  
  
  /* SMC LAN91C111 network controller. */
  
  static struct resource smc91x_resources[] = {
  	[0] = {
  		.name	= "smc91x-regs",
  		.start	= XCEP_ETH_PHYS,
  		.end	= XCEP_ETH_PHYS_END,
  		.flags	= IORESOURCE_MEM,
  	},
  	[1] = {
  		.start	= XCEP_ETH_IRQ,
  		.end	= XCEP_ETH_IRQ,
  		.flags	= IORESOURCE_IRQ,
  	},
  	[2] = {
  		.name	= "smc91x-attrib",
  		.start	= XCEP_ETH_ATTR,
  		.end	= XCEP_ETH_ATTR_END,
  		.flags	= IORESOURCE_MEM,
  	},
  };
  
  static struct smc91x_platdata xcep_smc91x_info = {
  	.flags	= SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
  };
  
  static struct platform_device smc91x_device = {
  	.name		= "smc91x",
  	.id		= -1,
  	.num_resources	= ARRAY_SIZE(smc91x_resources),
  	.resource	= smc91x_resources,
  	.dev		= {
  		.platform_data = &xcep_smc91x_info,
  	},
  };
  
  
  static struct platform_device *devices[] __initdata = {
  	&flash_device,
  	&smc91x_device,
  };
  
  
  /* We have to state that there are HWMON devices on the I2C bus on XCEP.
   * Drivers for HWMON verify capabilities of the adapter when loading and
   * refuse to attach if the adapter doesn't support HWMON class of devices. */
  static struct i2c_pxa_platform_data xcep_i2c_platform_data  = {
  	.class = I2C_CLASS_HWMON
  };
  
  
  static mfp_cfg_t xcep_pin_config[] __initdata = {
  	GPIO79_nCS_3,	/* SMC 91C111 chip select. */
  	GPIO80_nCS_4,	/* CPLD chip select. */
  	/* SSP communication to MSP430 */
  	GPIO23_SSP1_SCLK,
  	GPIO24_SSP1_SFRM,
  	GPIO25_SSP1_TXD,
  	GPIO26_SSP1_RXD,
  	GPIO27_SSP1_EXTCLK
  };
  
  static void __init xcep_init(void)
  {
  	pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
  
  	pxa_set_ffuart_info(NULL);
  	pxa_set_btuart_info(NULL);
  	pxa_set_stuart_info(NULL);
  	pxa_set_hwuart_info(NULL);
  
  	/* See Intel XScale Developer's Guide for details */
  	/* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
  	__raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
  	/* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
  	__raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
  
  	platform_add_devices(ARRAY_AND_SIZE(devices));
  	pxa_set_i2c_info(&xcep_i2c_platform_data);
  }
  
  MACHINE_START(XCEP, "Iskratel XCEP")
  	.atag_offset	= 0x100,
  	.init_machine	= xcep_init,
  	.map_io		= pxa25x_map_io,
  	.nr_irqs	= PXA_NR_IRQS,
  	.init_irq	= pxa25x_init_irq,
  	.handle_irq	= pxa25x_handle_irq,
  	.init_time	= pxa_timer_init,
  	.restart	= pxa_restart,
  MACHINE_END