linux/arch/arm/mach-pxa/xcep.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*  linux/arch/arm/mach-pxa/xcep.c
   3 *
   4 *  Support for the Iskratel Electronics XCEP platform as used in
   5 *  the Libera instruments from Instrumentation Technologies.
   6 *
   7 *  Author:     Ales Bardorfer <ales@i-tech.si>
   8 *  Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
   9 *  Contributions by: Matej Kenda <matej.kenda@i-tech.si>
  10 *  Created:    June 2006
  11 *  Copyright:  (C) 2006-2009 Instrumentation Technologies
  12 */
  13
  14#include <linux/platform_device.h>
  15#include <linux/i2c.h>
  16#include <linux/platform_data/i2c-pxa.h>
  17#include <linux/smc91x.h>
  18#include <linux/mtd/mtd.h>
  19#include <linux/mtd/partitions.h>
  20#include <linux/mtd/physmap.h>
  21
  22#include <asm/mach-types.h>
  23#include <asm/mach/arch.h>
  24#include <asm/mach/irq.h>
  25#include <asm/mach/map.h>
  26
  27#include <mach/hardware.h>
  28#include "pxa25x.h"
  29#include <mach/smemc.h>
  30
  31#include "generic.h"
  32#include "devices.h"
  33
  34#define XCEP_ETH_PHYS           (PXA_CS3_PHYS + 0x00000300)
  35#define XCEP_ETH_PHYS_END       (PXA_CS3_PHYS + 0x000fffff)
  36#define XCEP_ETH_ATTR           (PXA_CS3_PHYS + 0x02000000)
  37#define XCEP_ETH_ATTR_END       (PXA_CS3_PHYS + 0x020fffff)
  38#define XCEP_ETH_IRQ            IRQ_GPIO0
  39
  40/*  XCEP CPLD base */
  41#define XCEP_CPLD_BASE          0xf0000000
  42
  43
  44/* Flash partitions. */
  45
  46static struct mtd_partition xcep_partitions[] = {
  47        {
  48                .name =         "Bootloader",
  49                .size =         0x00040000,
  50                .offset =       0,
  51                .mask_flags =   MTD_WRITEABLE
  52        }, {
  53                .name =         "Bootloader ENV",
  54                .size =         0x00040000,
  55                .offset =       0x00040000,
  56                .mask_flags =   MTD_WRITEABLE
  57        }, {
  58                .name =         "Kernel",
  59                .size =         0x00100000,
  60                .offset =       0x00080000,
  61        }, {
  62                .name =         "Rescue fs",
  63                .size =         0x00280000,
  64                .offset =       0x00180000,
  65        }, {
  66                .name =         "Filesystem",
  67                .size =         MTDPART_SIZ_FULL,
  68                .offset =       0x00400000
  69        }
  70};
  71
  72static struct physmap_flash_data xcep_flash_data[] = {
  73        {
  74                .width          = 4,            /* bankwidth in bytes */
  75                .parts          = xcep_partitions,
  76                .nr_parts       = ARRAY_SIZE(xcep_partitions)
  77        }
  78};
  79
  80static struct resource flash_resource = {
  81        .start  = PXA_CS0_PHYS,
  82        .end    = PXA_CS0_PHYS + SZ_32M - 1,
  83        .flags  = IORESOURCE_MEM,
  84};
  85
  86static struct platform_device flash_device = {
  87        .name   = "physmap-flash",
  88        .id     = 0,
  89        .dev    = {
  90                .platform_data = xcep_flash_data,
  91        },
  92        .resource = &flash_resource,
  93        .num_resources = 1,
  94};
  95
  96
  97
  98/* SMC LAN91C111 network controller. */
  99
 100static struct resource smc91x_resources[] = {
 101        [0] = {
 102                .name   = "smc91x-regs",
 103                .start  = XCEP_ETH_PHYS,
 104                .end    = XCEP_ETH_PHYS_END,
 105                .flags  = IORESOURCE_MEM,
 106        },
 107        [1] = {
 108                .start  = XCEP_ETH_IRQ,
 109                .end    = XCEP_ETH_IRQ,
 110                .flags  = IORESOURCE_IRQ,
 111        },
 112        [2] = {
 113                .name   = "smc91x-attrib",
 114                .start  = XCEP_ETH_ATTR,
 115                .end    = XCEP_ETH_ATTR_END,
 116                .flags  = IORESOURCE_MEM,
 117        },
 118};
 119
 120static struct smc91x_platdata xcep_smc91x_info = {
 121        .flags  = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
 122                  SMC91X_NOWAIT | SMC91X_USE_DMA,
 123};
 124
 125static struct platform_device smc91x_device = {
 126        .name           = "smc91x",
 127        .id             = -1,
 128        .num_resources  = ARRAY_SIZE(smc91x_resources),
 129        .resource       = smc91x_resources,
 130        .dev            = {
 131                .platform_data = &xcep_smc91x_info,
 132        },
 133};
 134
 135
 136static struct platform_device *devices[] __initdata = {
 137        &flash_device,
 138        &smc91x_device,
 139};
 140
 141
 142/* We have to state that there are HWMON devices on the I2C bus on XCEP.
 143 * Drivers for HWMON verify capabilities of the adapter when loading and
 144 * refuse to attach if the adapter doesn't support HWMON class of devices. */
 145static struct i2c_pxa_platform_data xcep_i2c_platform_data  = {
 146        .class = I2C_CLASS_HWMON
 147};
 148
 149
 150static mfp_cfg_t xcep_pin_config[] __initdata = {
 151        GPIO79_nCS_3,   /* SMC 91C111 chip select. */
 152        GPIO80_nCS_4,   /* CPLD chip select. */
 153        /* SSP communication to MSP430 */
 154        GPIO23_SSP1_SCLK,
 155        GPIO24_SSP1_SFRM,
 156        GPIO25_SSP1_TXD,
 157        GPIO26_SSP1_RXD,
 158        GPIO27_SSP1_EXTCLK
 159};
 160
 161static void __init xcep_init(void)
 162{
 163        pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
 164
 165        pxa_set_ffuart_info(NULL);
 166        pxa_set_btuart_info(NULL);
 167        pxa_set_stuart_info(NULL);
 168        pxa_set_hwuart_info(NULL);
 169
 170        /* See Intel XScale Developer's Guide for details */
 171        /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
 172        __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
 173        /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
 174        __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
 175
 176        platform_add_devices(ARRAY_AND_SIZE(devices));
 177        pxa_set_i2c_info(&xcep_i2c_platform_data);
 178}
 179
 180MACHINE_START(XCEP, "Iskratel XCEP")
 181        .atag_offset    = 0x100,
 182        .init_machine   = xcep_init,
 183        .map_io         = pxa25x_map_io,
 184        .nr_irqs        = PXA_NR_IRQS,
 185        .init_irq       = pxa25x_init_irq,
 186        .handle_irq     = pxa25x_handle_irq,
 187        .init_time      = pxa_timer_init,
 188        .restart        = pxa_restart,
 189MACHINE_END
 190
 191