arch/arm/mach-kirkwood/board-dnskw.c

   1 /*
   2  * Copyright 2012 (C), Jamie Lentin <jm@lentin.co.uk>
   3  *
   4  * arch/arm/mach-kirkwood/board-dnskw.c
   5  *
   6  * D-link DNS-320 & DNS-325 NAS Init for drivers not converted to
   7  * flattened device tree yet.
   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 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/mv643xx_eth.h>
  18 #include <linux/gpio.h>
  19 #include "common.h"
  20 #include "mpp.h"
  21
  22 static struct mv643xx_eth_platform_data dnskw_ge00_data = {
  23         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
  24 };
  25
  26 static unsigned int dnskw_mpp_config[] __initdata = {
  27         MPP13_UART1_TXD,        /* Custom ... */
  28         MPP14_UART1_RXD,        /* ... Controller (DNS-320 only) */
  29         MPP20_SATA1_ACTn,       /* LED: White Right HDD */
  30         MPP21_SATA0_ACTn,       /* LED: White Left HDD */
  31         MPP24_GPIO,
  32         MPP25_GPIO,
  33         MPP26_GPIO,     /* LED: Power */
  34         MPP27_GPIO,     /* LED: Red Right HDD */
  35         MPP28_GPIO,     /* LED: Red Left HDD */
  36         MPP29_GPIO,     /* LED: Red USB (DNS-325 only) */
  37         MPP30_GPIO,
  38         MPP31_GPIO,
  39         MPP32_GPIO,
  40         MPP33_GPO,
  41         MPP34_GPIO,     /* Button: Front power */
  42         MPP35_GPIO,     /* LED: Red USB (DNS-320 only) */
  43         MPP36_GPIO,     /* Power: Turn off board */
  44         MPP37_GPIO,     /* Power: Turn back on after power failure */
  45         MPP38_GPIO,
  46         MPP39_GPIO,     /* Power: SATA0 */
  47         MPP40_GPIO,     /* Power: SATA1 */
  48         MPP41_GPIO,     /* SATA0 present */
  49         MPP42_GPIO,     /* SATA1 present */
  50         MPP43_GPIO,     /* LED: White USB */
  51         MPP44_GPIO,     /* Fan: Tachometer Pin */
  52         MPP45_GPIO,     /* Fan: high speed */
  53         MPP46_GPIO,     /* Fan: low speed */
  54         MPP47_GPIO,     /* Button: Back unmount */
  55         MPP48_GPIO,     /* Button: Back reset */
  56         MPP49_GPIO,     /* Temp Alarm (DNS-325) Pin of U5 (DNS-320) */
  57         0
  58 };
  59
  60 static void dnskw_power_off(void)
  61 {
  62         gpio_set_value(36, 1);
  63 }
  64
  65 /* Register any GPIO for output and set the value */
  66 static void __init dnskw_gpio_register(unsigned gpio, char *name, int def)
  67 {
  68         if (gpio_request(gpio, name) == 0 &&
  69             gpio_direction_output(gpio, 0) == 0) {
  70                 gpio_set_value(gpio, def);
  71                 if (gpio_export(gpio, 0) != 0)
  72                         pr_err("dnskw: Failed to export GPIO %s\n", name);
  73         } else
  74                 pr_err("dnskw: Failed to register %s\n", name);
  75 }
  76
  77 void __init dnskw_init(void)
  78 {
  79         kirkwood_mpp_conf(dnskw_mpp_config);
  80
  81         kirkwood_ehci_init();
  82         kirkwood_ge00_init(&dnskw_ge00_data);
  83
  84         /* Register power-off GPIO. */
  85         if (gpio_request(36, "dnskw:power:off") == 0
  86             && gpio_direction_output(36, 0) == 0)
  87                 pm_power_off = dnskw_power_off;
  88         else
  89                 pr_err("dnskw: failed to configure power-off GPIO\n");
  90
  91         /* Ensure power is supplied to both HDDs */
  92         dnskw_gpio_register(39, "dnskw:power:sata0", 1);
  93         dnskw_gpio_register(40, "dnskw:power:sata1", 1);
  94
  95         /* Set NAS to turn back on after a power failure */
  96         dnskw_gpio_register(37, "dnskw:power:recover", 1);
  97 }