arch/arm/mach-orion5x/edmini_v2-setup.c

   1 /*
   2  * arch/arm/mach-orion5x/edmini_v2-setup.c
   3  *
   4  * LaCie Ethernet Disk mini V2 Setup
   5  *
   6  * Copyright (C) 2008 Christopher Moore <moore@free.fr>
   7  * Copyright (C) 2008 Albert Aribaud <albert.aribaud@free.fr>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 /*
  15  * TODO: add Orion USB device port init when kernel.org support is added.
  16  * TODO: add flash write support: see below.
  17  * TODO: add power-off support.
  18  * TODO: add I2C EEPROM support.
  19  */
  20
  21 #include <linux/kernel.h>
  22 #include <linux/init.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/pci.h>
  25 #include <linux/irq.h>
  26 #include <linux/mbus.h>
  27 #include <linux/mtd/physmap.h>
  28 #include <linux/leds.h>
  29 #include <linux/gpio_keys.h>
  30 #include <linux/input.h>
  31 #include <linux/i2c.h>
  32 #include <linux/ata_platform.h>
  33 #include <linux/gpio.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/pci.h>
  37 #include <mach/orion5x.h>
  38 #include "common.h"
  39 #include "mpp.h"
  40
  41 /*****************************************************************************
  42  * EDMINI_V2 Info
  43  ****************************************************************************/
  44
  45 /*
  46  * 512KB NOR flash Device bus boot chip select
  47  */
  48
  49 #define EDMINI_V2_NOR_BOOT_BASE         0xfff80000
  50 #define EDMINI_V2_NOR_BOOT_SIZE         SZ_512K
  51
  52 /*****************************************************************************
  53  * 512KB NOR Flash on BOOT Device
  54  ****************************************************************************/
  55
  56 /*
  57  * Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
  58  * -type device. This could cause risks of accidentally erasing critical
  59  * flash sectors. We thus define a single, write-protected partition covering
  60  * the whole flash.
  61  * TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
  62  * code, break this into at least three partitions: 'u-boot code', 'u-boot
  63  * environment' and 'whatever is left'.
  64  */
  65
  66 static struct mtd_partition edmini_v2_partitions[] = {
  67         {
  68                 .name           = "Full512kb",
  69                 .size           = 0x00080000,
  70                 .offset         = 0x00000000,
  71                 .mask_flags     = MTD_WRITEABLE,
  72         },
  73 };
  74
  75 static struct physmap_flash_data edmini_v2_nor_flash_data = {
  76         .width          = 1,
  77         .parts          = edmini_v2_partitions,
  78         .nr_parts       = ARRAY_SIZE(edmini_v2_partitions),
  79 };
  80
  81 static struct resource edmini_v2_nor_flash_resource = {
  82         .flags                  = IORESOURCE_MEM,
  83         .start                  = EDMINI_V2_NOR_BOOT_BASE,
  84         .end                    = EDMINI_V2_NOR_BOOT_BASE
  85                 + EDMINI_V2_NOR_BOOT_SIZE - 1,
  86 };
  87
  88 static struct platform_device edmini_v2_nor_flash = {
  89         .name                   = "physmap-flash",
  90         .id                     = 0,
  91         .dev            = {
  92                 .platform_data  = &edmini_v2_nor_flash_data,
  93         },
  94         .num_resources          = 1,
  95         .resource               = &edmini_v2_nor_flash_resource,
  96 };
  97
  98 /*****************************************************************************
  99  * RTC 5C372a on I2C bus
 100  ****************************************************************************/
 101
 102 #define EDMINIV2_RTC_GPIO       3
 103
 104 static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
 105         I2C_BOARD_INFO("rs5c372a", 0x32),
 106         .irq = 0,
 107 };
 108
 109 /*****************************************************************************
 110  * General Setup
 111  ****************************************************************************/
 112 static unsigned int edminiv2_mpp_modes[] __initdata = {
 113         MPP0_UNUSED,
 114         MPP1_UNUSED,
 115         MPP2_UNUSED,
 116         MPP3_GPIO,      /* RTC interrupt */
 117         MPP4_UNUSED,
 118         MPP5_UNUSED,
 119         MPP6_UNUSED,
 120         MPP7_UNUSED,
 121         MPP8_UNUSED,
 122         MPP9_UNUSED,
 123         MPP10_UNUSED,
 124         MPP11_UNUSED,
 125         MPP12_SATA_LED, /* SATA 0 presence */
 126         MPP13_SATA_LED, /* SATA 1 presence */
 127         MPP14_SATA_LED, /* SATA 0 active */
 128         MPP15_SATA_LED, /* SATA 1 active */
 129         /* 16: Power LED control (0 = On, 1 = Off) */
 130         MPP16_GPIO,
 131         /* 17: Power LED control select (0 = CPLD, 1 = GPIO16) */
 132         MPP17_GPIO,
 133         /* 18: Power button status (0 = Released, 1 = Pressed) */
 134         MPP18_GPIO,
 135         MPP19_UNUSED,
 136         0,
 137 };
 138
 139 void __init edmini_v2_init(void)
 140 {
 141         orion5x_mpp_conf(edminiv2_mpp_modes);
 142
 143         /*
 144          * Configure peripherals.
 145          */
 146         orion5x_ehci0_init();
 147
 148         mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
 149                                     ORION_MBUS_DEVBUS_BOOT_ATTR,
 150                                     EDMINI_V2_NOR_BOOT_BASE,
 151                                     EDMINI_V2_NOR_BOOT_SIZE);
 152         platform_device_register(&edmini_v2_nor_flash);
 153
 154         pr_notice("edmini_v2: USB device port, flash write and power-off "
 155                   "are not yet supported.\n");
 156
 157         /* Get RTC IRQ and register the chip */
 158         if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
 159                 if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
 160                         edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
 161                 else
 162                         gpio_free(EDMINIV2_RTC_GPIO);
 163         }
 164
 165         if (edmini_v2_i2c_rtc.irq == 0)
 166                 pr_warning("edmini_v2: failed to get RTC IRQ\n");
 167
 168         i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
 169 }