LXR linux/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 */
  24static struct regulator_consumer_supply dummy_supplies[] = {
  25        REGULATOR_SUPPLY("vddvario", "smsc911x"),
  26        REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  27};
  28
  29static 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
  44static 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
  51static 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
  61static struct platform_device *apsh4ad0a_devices[] __initdata = {
  62        &smsc911x_device,
  63};
  64
  65static 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}
  72device_initcall(apsh4ad0a_devices_setup);
  73
  74static 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
 101static 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 */
 116static void __init apsh4ad0a_setup(char **cmdline_p)
 117{
 118        pr_info("Alpha Project AP-SH4AD-0A support:\n");
 119}
 120
 121static void __init apsh4ad0a_init_irq(void)
 122{
 123        plat_irq_setup_pins(IRQ_MODE_IRQ3210);
 124}
 125
 126/*
 127 * The Machine Vector
 128 */
 129static 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};
 136