kernel/arch/sh/boards/board-apsh4ad0a.c

   1 /*
   2  * ALPHAPROJECT AP-SH4AD-0A Support.
   3  *
   4  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
   5  * Copyright (C) 2010  Matt Fleming
   6  * Copyright (C) 2010  Paul Mundt
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/io.h>
  15 #include <linux/regulator/fixed.h>
  16 #include <linux/regulator/machine.h>
  17 #include <linux/smsc911x.h>
  18 #include <linux/irq.h>
  19 #include <linux/clk.h>
  20 #include <asm/machvec.h>
  21 #include <asm/sizes.h>
  22
  23 /* Dummy supplies, where voltage doesn't matter */
  24 static struct regulator_consumer_supply dummy_supplies[] = {
  25         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  26         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  27 };
  28
  29 static struct resource smsc911x_resources[] = {
  30         [0] = {
  31                 .name           = "smsc911x-memory",
  32                 .start          = 0xA4000000,
  33                 .end            = 0xA4000000 + SZ_256 - 1,
  34                 .flags          = IORESOURCE_MEM,
  35         },
  36         [1] = {
  37                 .name           = "smsc911x-irq",
  38                 .start          = evt2irq(0x200),
  39                 .end            = evt2irq(0x200),
  40                 .flags          = IORESOURCE_IRQ,
  41         },
  42 };
  43
  44 static struct smsc911x_platform_config smsc911x_config = {
  45         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  46         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  47         .flags          = SMSC911X_USE_16BIT,
  48         .phy_interface  = PHY_INTERFACE_MODE_MII,
  49 };
  50
  51 static struct platform_device smsc911x_device = {
  52         .name           = "smsc911x",
  53         .id             = -1,
  54         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  55         .resource       = smsc911x_resources,
  56         .dev = {
  57                 .platform_data = &smsc911x_config,
  58         },
  59 };
  60
  61 static struct platform_device *apsh4ad0a_devices[] __initdata = {
  62         &smsc911x_device,
  63 };
  64
  65 static int __init apsh4ad0a_devices_setup(void)
  66 {
  67         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
  68
  69         return platform_add_devices(apsh4ad0a_devices,
  70                                     ARRAY_SIZE(apsh4ad0a_devices));
  71 }
  72 device_initcall(apsh4ad0a_devices_setup);
  73
  74 static int apsh4ad0a_mode_pins(void)
  75 {
  76         int value = 0;
  77
  78         /* These are the factory default settings of SW1 and SW2.
  79          * If you change these dip switches then you will need to
  80          * adjust the values below as well.
  81          */
  82         value |=  MODE_PIN0;  /* Clock Mode 3 */
  83         value |=  MODE_PIN1;
  84         value &= ~MODE_PIN2;
  85         value &= ~MODE_PIN3;
  86         value &= ~MODE_PIN4;  /* 16-bit Area0 bus width  */
  87         value |=  MODE_PIN5;
  88         value |=  MODE_PIN6;
  89         value |=  MODE_PIN7;  /* Normal mode */
  90         value |=  MODE_PIN8;  /* Little Endian */
  91         value |=  MODE_PIN9;  /* Crystal resonator */
  92         value &= ~MODE_PIN10; /* 29-bit address mode */
  93         value &= ~MODE_PIN11; /* PCI-E Root port */
  94         value &= ~MODE_PIN12; /* 4 lane + 1 lane */
  95         value |=  MODE_PIN13; /* AUD Enable */
  96         value &= ~MODE_PIN14; /* Normal Operation */
  97
  98         return value;
  99 }
 100
 101 static int apsh4ad0a_clk_init(void)
 102 {
 103         struct clk *clk;
 104         int ret;
 105
 106         clk = clk_get(NULL, "extal");
 107         if (IS_ERR(clk))
 108                 return PTR_ERR(clk);
 109         ret = clk_set_rate(clk, 33333000);
 110         clk_put(clk);
 111
 112         return ret;
 113 }
 114
 115 /* Initialize the board */
 116 static void __init apsh4ad0a_setup(char **cmdline_p)
 117 {
 118         pr_info("Alpha Project AP-SH4AD-0A support:\n");
 119 }
 120
 121 static void __init apsh4ad0a_init_irq(void)
 122 {
 123         plat_irq_setup_pins(IRQ_MODE_IRQ3210);
 124 }
 125
 126 /*
 127  * The Machine Vector
 128  */
 129 static struct sh_machine_vector mv_apsh4ad0a __initmv = {
 130         .mv_name                = "AP-SH4AD-0A",
 131         .mv_setup               = apsh4ad0a_setup,
 132         .mv_mode_pins           = apsh4ad0a_mode_pins,
 133         .mv_clk_init            = apsh4ad0a_clk_init,
 134         .mv_init_irq            = apsh4ad0a_init_irq,
 135 };