release/src-rt-6.x.4708/linux/linux-2.6.36/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/mtd/physmap.h>
  27 #include <linux/mv643xx_eth.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  * Ethernet
 100  ****************************************************************************/
 101
 102 static struct mv643xx_eth_platform_data edmini_v2_eth_data = {
 103         .phy_addr       = 8,
 104 };
 105
 106 /*****************************************************************************
 107  * RTC 5C372a on I2C bus
 108  ****************************************************************************/
 109
 110 #define EDMINIV2_RTC_GPIO       3
 111
 112 static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
 113         I2C_BOARD_INFO("rs5c372a", 0x32),
 114         .irq = 0,
 115 };
 116
 117 /*****************************************************************************
 118  * Sata
 119  ****************************************************************************/
 120
 121 static struct mv_sata_platform_data edmini_v2_sata_data = {
 122         .n_ports        = 2,
 123 };
 124
 125 /*****************************************************************************
 126  * GPIO LED (simple - doesn't use hardware blinking support)
 127  ****************************************************************************/
 128
 129 #define EDMINI_V2_GPIO_LED_POWER        16
 130
 131 static struct gpio_led edmini_v2_leds[] = {
 132         {
 133                 .name = "power:blue",
 134                 .gpio = EDMINI_V2_GPIO_LED_POWER,
 135                 .active_low = 1,
 136         },
 137 };
 138
 139 static struct gpio_led_platform_data edmini_v2_led_data = {
 140         .num_leds = ARRAY_SIZE(edmini_v2_leds),
 141         .leds = edmini_v2_leds,
 142 };
 143
 144 static struct platform_device edmini_v2_gpio_leds = {
 145         .name           = "leds-gpio",
 146         .id             = -1,
 147         .dev            = {
 148                 .platform_data  = &edmini_v2_led_data,
 149         },
 150 };
 151
 152 /****************************************************************************
 153  * GPIO key
 154  ****************************************************************************/
 155
 156 #define EDMINI_V2_GPIO_KEY_POWER        18
 157
 158 static struct gpio_keys_button edmini_v2_buttons[] = {
 159         {
 160                 .code           = KEY_POWER,
 161                 .gpio           = EDMINI_V2_GPIO_KEY_POWER,
 162                 .desc           = "Power Button",
 163                 .active_low     = 0,
 164         },
 165 };
 166
 167 static struct gpio_keys_platform_data edmini_v2_button_data = {
 168         .buttons        = edmini_v2_buttons,
 169         .nbuttons       = ARRAY_SIZE(edmini_v2_buttons),
 170 };
 171
 172 static struct platform_device edmini_v2_gpio_buttons = {
 173         .name           = "gpio-keys",
 174         .id             = -1,
 175         .dev            = {
 176                 .platform_data  = &edmini_v2_button_data,
 177         },
 178 };
 179
 180 /*****************************************************************************
 181  * General Setup
 182  ****************************************************************************/
 183 static struct orion5x_mpp_mode edminiv2_mpp_modes[] __initdata = {
 184         {  0, MPP_UNUSED },
 185         {  1, MPP_UNUSED },
 186         {  2, MPP_UNUSED },
 187         {  3, MPP_GPIO },       /* RTC interrupt */
 188         {  4, MPP_UNUSED },
 189         {  5, MPP_UNUSED },
 190         {  6, MPP_UNUSED },
 191         {  7, MPP_UNUSED },
 192         {  8, MPP_UNUSED },
 193         {  9, MPP_UNUSED },
 194         { 10, MPP_UNUSED },
 195         { 11, MPP_UNUSED },
 196         { 12, MPP_SATA_LED },   /* SATA 0 presence */
 197         { 13, MPP_SATA_LED },   /* SATA 1 presence */
 198         { 14, MPP_SATA_LED },   /* SATA 0 active */
 199         { 15, MPP_SATA_LED },   /* SATA 1 active */
 200         /* 16: Power LED control (0 = On, 1 = Off) */
 201         { 16, MPP_GPIO },
 202         /* 17: Power LED control select (0 = CPLD, 1 = GPIO16) */
 203         { 17, MPP_GPIO },
 204         /* 18: Power button status (0 = Released, 1 = Pressed) */
 205         { 18, MPP_GPIO },
 206         { 19, MPP_UNUSED },
 207         { -1 }
 208 };
 209
 210 static void __init edmini_v2_init(void)
 211 {
 212         /*
 213          * Setup basic Orion functions. Need to be called early.
 214          */
 215         orion5x_init();
 216
 217         orion5x_mpp_conf(edminiv2_mpp_modes);
 218
 219         /*
 220          * Configure peripherals.
 221          */
 222         orion5x_ehci0_init();
 223         orion5x_eth_init(&edmini_v2_eth_data);
 224         orion5x_i2c_init();
 225         orion5x_sata_init(&edmini_v2_sata_data);
 226         orion5x_uart0_init();
 227
 228         orion5x_setup_dev_boot_win(EDMINI_V2_NOR_BOOT_BASE,
 229                                 EDMINI_V2_NOR_BOOT_SIZE);
 230         platform_device_register(&edmini_v2_nor_flash);
 231         platform_device_register(&edmini_v2_gpio_leds);
 232         platform_device_register(&edmini_v2_gpio_buttons);
 233
 234         pr_notice("edmini_v2: USB device port, flash write and power-off "
 235                   "are not yet supported.\n");
 236
 237         /* Get RTC IRQ and register the chip */
 238         if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
 239                 if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
 240                         edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
 241                 else
 242                         gpio_free(EDMINIV2_RTC_GPIO);
 243         }
 244
 245         if (edmini_v2_i2c_rtc.irq == 0)
 246                 pr_warning("edmini_v2: failed to get RTC IRQ\n");
 247
 248         i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
 249 }
 250
 251 /* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */
 252 MACHINE_START(EDMINI_V2, "LaCie Ethernet Disk mini V2")
 253         /* Maintainer: Christopher Moore <moore@free.fr> */
 254         .phys_io        = ORION5X_REGS_PHYS_BASE,
 255         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 256         .boot_params    = 0x00000100,
 257         .init_machine   = edmini_v2_init,
 258         .map_io         = orion5x_map_io,
 259         .init_irq       = orion5x_init_irq,
 260         .timer          = &orion5x_timer,
 261         .fixup          = tag_fixup_mem32,
 262 MACHINE_END