release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-orion5x/mss2-setup.c

   1 /*
   2  * Maxtor Shared Storage II Board Setup
   3  *
   4  * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/pci.h>
  16 #include <linux/irq.h>
  17 #include <linux/mtd/physmap.h>
  18 #include <linux/mv643xx_eth.h>
  19 #include <linux/leds.h>
  20 #include <linux/gpio_keys.h>
  21 #include <linux/input.h>
  22 #include <linux/i2c.h>
  23 #include <linux/ata_platform.h>
  24 #include <linux/gpio.h>
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/pci.h>
  28 #include <mach/orion5x.h>
  29 #include <mach/bridge-regs.h>
  30 #include "common.h"
  31 #include "mpp.h"
  32
  33 #define MSS2_NOR_BOOT_BASE      0xff800000
  34 #define MSS2_NOR_BOOT_SIZE      SZ_256K
  35
  36 /*****************************************************************************
  37  * Maxtor Shared Storage II Info
  38  ****************************************************************************/
  39
  40 /*
  41  * Maxtor Shared Storage II hardware :
  42  * - Marvell 88F5182-A2 C500
  43  * - Marvell 88E1111 Gigabit Ethernet PHY
  44  * - RTC M41T81 (@0x68) on I2C bus
  45  * - 256KB NOR flash
  46  * - 64MB of RAM
  47  */
  48
  49 /*****************************************************************************
  50  * 256KB NOR Flash on BOOT Device
  51  ****************************************************************************/
  52
  53 static struct physmap_flash_data mss2_nor_flash_data = {
  54         .width          = 1,
  55 };
  56
  57 static struct resource mss2_nor_flash_resource = {
  58         .flags          = IORESOURCE_MEM,
  59         .start          = MSS2_NOR_BOOT_BASE,
  60         .end            = MSS2_NOR_BOOT_BASE + MSS2_NOR_BOOT_SIZE - 1,
  61 };
  62
  63 static struct platform_device mss2_nor_flash = {
  64         .name           = "physmap-flash",
  65         .id             = 0,
  66         .dev            = {
  67                 .platform_data  = &mss2_nor_flash_data,
  68         },
  69         .resource       = &mss2_nor_flash_resource,
  70         .num_resources  = 1,
  71 };
  72
  73 /****************************************************************************
  74  * PCI setup
  75  ****************************************************************************/
  76 static int __init mss2_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  77 {
  78         int irq;
  79
  80         /*
  81          * Check for devices with hard-wired IRQs.
  82          */
  83         irq = orion5x_pci_map_irq(dev, slot, pin);
  84         if (irq != -1)
  85                 return irq;
  86
  87         return -1;
  88 }
  89
  90 static struct hw_pci mss2_pci __initdata = {
  91         .nr_controllers = 2,
  92         .swizzle        = pci_std_swizzle,
  93         .setup          = orion5x_pci_sys_setup,
  94         .scan           = orion5x_pci_sys_scan_bus,
  95         .map_irq        = mss2_pci_map_irq,
  96 };
  97
  98 static int __init mss2_pci_init(void)
  99 {
 100         if (machine_is_mss2())
 101                 pci_common_init(&mss2_pci);
 102
 103         return 0;
 104 }
 105 subsys_initcall(mss2_pci_init);
 106
 107
 108 /*****************************************************************************
 109  * Ethernet
 110  ****************************************************************************/
 111
 112 static struct mv643xx_eth_platform_data mss2_eth_data = {
 113         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
 114 };
 115
 116 /*****************************************************************************
 117  * SATA
 118  ****************************************************************************/
 119
 120 static struct mv_sata_platform_data mss2_sata_data = {
 121         .n_ports        = 2,
 122 };
 123
 124 /*****************************************************************************
 125  * GPIO buttons
 126  ****************************************************************************/
 127
 128 #define MSS2_GPIO_KEY_RESET     12
 129 #define MSS2_GPIO_KEY_POWER     11
 130
 131 static struct gpio_keys_button mss2_buttons[] = {
 132         {
 133                 .code           = KEY_POWER,
 134                 .gpio           = MSS2_GPIO_KEY_POWER,
 135                 .desc           = "Power",
 136                 .active_low     = 1,
 137         }, {
 138                 .code           = KEY_RESTART,
 139                 .gpio           = MSS2_GPIO_KEY_RESET,
 140                 .desc           = "Reset",
 141                 .active_low     = 1,
 142         },
 143 };
 144
 145 static struct gpio_keys_platform_data mss2_button_data = {
 146         .buttons        = mss2_buttons,
 147         .nbuttons       = ARRAY_SIZE(mss2_buttons),
 148 };
 149
 150 static struct platform_device mss2_button_device = {
 151         .name           = "gpio-keys",
 152         .id             = -1,
 153         .dev            = {
 154                 .platform_data  = &mss2_button_data,
 155         },
 156 };
 157
 158 /*****************************************************************************
 159  * RTC m41t81 on I2C bus
 160  ****************************************************************************/
 161
 162 #define MSS2_GPIO_RTC_IRQ       3
 163
 164 static struct i2c_board_info __initdata mss2_i2c_rtc = {
 165         I2C_BOARD_INFO("m41t81", 0x68),
 166 };
 167
 168 /*****************************************************************************
 169  * MSS2 power off method
 170  ****************************************************************************/
 171 /*
 172  * On the Maxtor Shared Storage II, the shutdown process is the following :
 173  * - Userland modifies U-boot env to tell U-boot to go idle at next boot
 174  * - The board reboots
 175  * - U-boot starts and go into an idle mode until the user press "power"
 176  */
 177 static void mss2_power_off(void)
 178 {
 179         u32 reg;
 180
 181         /*
 182          * Enable and issue soft reset
 183          */
 184         reg = readl(RSTOUTn_MASK);
 185         reg |= 1 << 2;
 186         writel(reg, RSTOUTn_MASK);
 187
 188         reg = readl(CPU_SOFT_RESET);
 189         reg |= 1;
 190         writel(reg, CPU_SOFT_RESET);
 191 }
 192
 193 /****************************************************************************
 194  * General Setup
 195  ****************************************************************************/
 196 static struct orion5x_mpp_mode mss2_mpp_modes[] __initdata = {
 197         {  0, MPP_GPIO },               /* Power LED */
 198         {  1, MPP_GPIO },               /* Error LED */
 199         {  2, MPP_UNUSED },
 200         {  3, MPP_GPIO },               /* RTC interrupt */
 201         {  4, MPP_GPIO },               /* HDD ind. (Single/Dual)*/
 202         {  5, MPP_GPIO },               /* HD0 5V control */
 203         {  6, MPP_GPIO },               /* HD0 12V control */
 204         {  7, MPP_GPIO },               /* HD1 5V control */
 205         {  8, MPP_GPIO },               /* HD1 12V control */
 206         {  9, MPP_UNUSED },
 207         { 10, MPP_GPIO },               /* Fan control */
 208         { 11, MPP_GPIO },               /* Power button */
 209         { 12, MPP_GPIO },               /* Reset button */
 210         { 13, MPP_UNUSED },
 211         { 14, MPP_SATA_LED },           /* SATA 0 active */
 212         { 15, MPP_SATA_LED },           /* SATA 1 active */
 213         { 16, MPP_UNUSED },
 214         { 17, MPP_UNUSED },
 215         { 18, MPP_UNUSED },
 216         { 19, MPP_UNUSED },
 217         { -1 },
 218 };
 219
 220 static void __init mss2_init(void)
 221 {
 222         /* Setup basic Orion functions. Need to be called early. */
 223         orion5x_init();
 224
 225         orion5x_mpp_conf(mss2_mpp_modes);
 226
 227         /*
 228          * MPP[20] Unused
 229          * MPP[21] PCI clock
 230          * MPP[22] USB 0 over current
 231          * MPP[23] USB 1 over current
 232          */
 233
 234         /*
 235          * Configure peripherals.
 236          */
 237         orion5x_ehci0_init();
 238         orion5x_ehci1_init();
 239         orion5x_eth_init(&mss2_eth_data);
 240         orion5x_i2c_init();
 241         orion5x_sata_init(&mss2_sata_data);
 242         orion5x_uart0_init();
 243         orion5x_xor_init();
 244
 245         orion5x_setup_dev_boot_win(MSS2_NOR_BOOT_BASE, MSS2_NOR_BOOT_SIZE);
 246         platform_device_register(&mss2_nor_flash);
 247
 248         platform_device_register(&mss2_button_device);
 249
 250         if (gpio_request(MSS2_GPIO_RTC_IRQ, "rtc") == 0) {
 251                 if (gpio_direction_input(MSS2_GPIO_RTC_IRQ) == 0)
 252                         mss2_i2c_rtc.irq = gpio_to_irq(MSS2_GPIO_RTC_IRQ);
 253                 else
 254                         gpio_free(MSS2_GPIO_RTC_IRQ);
 255         }
 256         i2c_register_board_info(0, &mss2_i2c_rtc, 1);
 257
 258         /* register mss2 specific power-off method */
 259         pm_power_off = mss2_power_off;
 260 }
 261
 262 MACHINE_START(MSS2, "Maxtor Shared Storage II")
 263         /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */
 264         .phys_io        = ORION5X_REGS_PHYS_BASE,
 265         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 266         .boot_params    = 0x00000100,
 267         .init_machine   = mss2_init,
 268         .map_io         = orion5x_map_io,
 269         .init_irq       = orion5x_init_irq,
 270         .timer          = &orion5x_timer,
 271         .fixup          = tag_fixup_mem32
 272 MACHINE_END