arch/arm/mach-pxa/xcep.c

   1 /*  linux/arch/arm/mach-pxa/xcep.c
   2  *
   3  *  Support for the Iskratel Electronics XCEP platform as used in
   4  *  the Libera instruments from Instrumentation Technologies.
   5  *
   6  *  Author:     Ales Bardorfer <ales@i-tech.si>
   7  *  Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
   8  *  Contributions by: Matej Kenda <matej.kenda@i-tech.si>
   9  *  Created:    June 2006
  10  *  Copyright:  (C) 2006-2009 Instrumentation Technologies
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License version 2 as
  14  *  published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/platform_device.h>
  18 #include <linux/i2c.h>
  19 #include <linux/smc91x.h>
  20 #include <linux/mtd/mtd.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <linux/mtd/physmap.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/irq.h>
  27 #include <asm/mach/map.h>
  28
  29 #include <plat/i2c.h>
  30
  31 #include <mach/hardware.h>
  32 #include <mach/pxa2xx-regs.h>
  33 #include <mach/mfp-pxa25x.h>
  34 #include <mach/smemc.h>
  35
  36 #include "generic.h"
  37
  38 #define XCEP_ETH_PHYS           (PXA_CS3_PHYS + 0x00000300)
  39 #define XCEP_ETH_PHYS_END       (PXA_CS3_PHYS + 0x000fffff)
  40 #define XCEP_ETH_ATTR           (PXA_CS3_PHYS + 0x02000000)
  41 #define XCEP_ETH_ATTR_END       (PXA_CS3_PHYS + 0x020fffff)
  42 #define XCEP_ETH_IRQ            IRQ_GPIO0
  43
  44 /*  XCEP CPLD base */
  45 #define XCEP_CPLD_BASE          0xf0000000
  46
  47
  48 /* Flash partitions. */
  49
  50 static struct mtd_partition xcep_partitions[] = {
  51         {
  52                 .name =         "Bootloader",
  53                 .size =         0x00040000,
  54                 .offset =       0,
  55                 .mask_flags =   MTD_WRITEABLE
  56         }, {
  57                 .name =         "Bootloader ENV",
  58                 .size =         0x00040000,
  59                 .offset =       0x00040000,
  60                 .mask_flags =   MTD_WRITEABLE
  61         }, {
  62                 .name =         "Kernel",
  63                 .size =         0x00100000,
  64                 .offset =       0x00080000,
  65         }, {
  66                 .name =         "Rescue fs",
  67                 .size =         0x00280000,
  68                 .offset =       0x00180000,
  69         }, {
  70                 .name =         "Filesystem",
  71                 .size =         MTDPART_SIZ_FULL,
  72                 .offset =       0x00400000
  73         }
  74 };
  75
  76 static struct physmap_flash_data xcep_flash_data[] = {
  77         {
  78                 .width          = 4,            /* bankwidth in bytes */
  79                 .parts          = xcep_partitions,
  80                 .nr_parts       = ARRAY_SIZE(xcep_partitions)
  81         }
  82 };
  83
  84 static struct resource flash_resource = {
  85         .start  = PXA_CS0_PHYS,
  86         .end    = PXA_CS0_PHYS + SZ_32M - 1,
  87         .flags  = IORESOURCE_MEM,
  88 };
  89
  90 static struct platform_device flash_device = {
  91         .name   = "physmap-flash",
  92         .id     = 0,
  93         .dev    = {
  94                 .platform_data = xcep_flash_data,
  95         },
  96         .resource = &flash_resource,
  97         .num_resources = 1,
  98 };
  99
 100
 101
 102 /* SMC LAN91C111 network controller. */
 103
 104 static struct resource smc91x_resources[] = {
 105         [0] = {
 106                 .name   = "smc91x-regs",
 107                 .start  = XCEP_ETH_PHYS,
 108                 .end    = XCEP_ETH_PHYS_END,
 109                 .flags  = IORESOURCE_MEM,
 110         },
 111         [1] = {
 112                 .start  = XCEP_ETH_IRQ,
 113                 .end    = XCEP_ETH_IRQ,
 114                 .flags  = IORESOURCE_IRQ,
 115         },
 116         [2] = {
 117                 .name   = "smc91x-attrib",
 118                 .start  = XCEP_ETH_ATTR,
 119                 .end    = XCEP_ETH_ATTR_END,
 120                 .flags  = IORESOURCE_MEM,
 121         },
 122 };
 123
 124 static struct smc91x_platdata xcep_smc91x_info = {
 125         .flags  = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
 126 };
 127
 128 static struct platform_device smc91x_device = {
 129         .name           = "smc91x",
 130         .id             = -1,
 131         .num_resources  = ARRAY_SIZE(smc91x_resources),
 132         .resource       = smc91x_resources,
 133         .dev            = {
 134                 .platform_data = &xcep_smc91x_info,
 135         },
 136 };
 137
 138
 139 static struct platform_device *devices[] __initdata = {
 140         &flash_device,
 141         &smc91x_device,
 142 };
 143
 144
 145 /* We have to state that there are HWMON devices on the I2C bus on XCEP.
 146  * Drivers for HWMON verify capabilities of the adapter when loading and
 147  * refuse to attach if the adapter doesn't support HWMON class of devices.
 148  * See also Documentation/i2c/porting-clients. */
 149 static struct i2c_pxa_platform_data xcep_i2c_platform_data  = {
 150         .class = I2C_CLASS_HWMON
 151 };
 152
 153
 154 static mfp_cfg_t xcep_pin_config[] __initdata = {
 155         GPIO79_nCS_3,   /* SMC 91C111 chip select. */
 156         GPIO80_nCS_4,   /* CPLD chip select. */
 157         /* SSP communication to MSP430 */
 158         GPIO23_SSP1_SCLK,
 159         GPIO24_SSP1_SFRM,
 160         GPIO25_SSP1_TXD,
 161         GPIO26_SSP1_RXD,
 162         GPIO27_SSP1_EXTCLK
 163 };
 164
 165 static void __init xcep_init(void)
 166 {
 167         pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
 168
 169         pxa_set_ffuart_info(NULL);
 170         pxa_set_btuart_info(NULL);
 171         pxa_set_stuart_info(NULL);
 172         pxa_set_hwuart_info(NULL);
 173
 174         /* See Intel XScale Developer's Guide for details */
 175         /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
 176         __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
 177         /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
 178         __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
 179
 180         platform_add_devices(ARRAY_AND_SIZE(devices));
 181         pxa_set_i2c_info(&xcep_i2c_platform_data);
 182 }
 183
 184 MACHINE_START(XCEP, "Iskratel XCEP")
 185         .boot_params    = 0xa0000100,
 186         .init_machine   = xcep_init,
 187         .map_io         = pxa25x_map_io,
 188         .init_irq       = pxa25x_init_irq,
 189         .timer          = &pxa_timer,
 190 MACHINE_END
 191