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/smsc911x.h>
  16 #include <linux/irq.h>
  17 #include <linux/clk.h>
  18 #include <asm/machvec.h>
  19 #include <asm/sizes.h>
  20
  21 static struct resource smsc911x_resources[] = {
  22         [0] = {
  23                 .name           = "smsc911x-memory",
  24                 .start          = 0xA4000000,
  25                 .end            = 0xA4000000 + SZ_256 - 1,
  26                 .flags          = IORESOURCE_MEM,
  27         },
  28         [1] = {
  29                 .name           = "smsc911x-irq",
  30                 .start          = evt2irq(0x200),
  31                 .end            = evt2irq(0x200),
  32                 .flags          = IORESOURCE_IRQ,
  33         },
  34 };
  35
  36 static struct smsc911x_platform_config smsc911x_config = {
  37         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  38         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  39         .flags          = SMSC911X_USE_16BIT,
  40         .phy_interface  = PHY_INTERFACE_MODE_MII,
  41 };
  42
  43 static struct platform_device smsc911x_device = {
  44         .name           = "smsc911x",
  45         .id             = -1,
  46         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  47         .resource       = smsc911x_resources,
  48         .dev = {
  49                 .platform_data = &smsc911x_config,
  50         },
  51 };
  52
  53 static struct platform_device *apsh4ad0a_devices[] __initdata = {
  54         &smsc911x_device,
  55 };
  56
  57 static int __init apsh4ad0a_devices_setup(void)
  58 {
  59         return platform_add_devices(apsh4ad0a_devices,
  60                                     ARRAY_SIZE(apsh4ad0a_devices));
  61 }
  62 device_initcall(apsh4ad0a_devices_setup);
  63
  64 static int apsh4ad0a_mode_pins(void)
  65 {
  66         int value = 0;
  67
  68         /* These are the factory default settings of SW1 and SW2.
  69          * If you change these dip switches then you will need to
  70          * adjust the values below as well.
  71          */
  72         value |=  MODE_PIN0;  /* Clock Mode 3 */
  73         value |=  MODE_PIN1;
  74         value &= ~MODE_PIN2;
  75         value &= ~MODE_PIN3;
  76         value &= ~MODE_PIN4;  /* 16-bit Area0 bus width  */
  77         value |=  MODE_PIN5;
  78         value |=  MODE_PIN6;
  79         value |=  MODE_PIN7;  /* Normal mode */
  80         value |=  MODE_PIN8;  /* Little Endian */
  81         value |=  MODE_PIN9;  /* Crystal resonator */
  82         value &= ~MODE_PIN10; /* 29-bit address mode */
  83         value &= ~MODE_PIN11; /* PCI-E Root port */
  84         value &= ~MODE_PIN12; /* 4 lane + 1 lane */
  85         value |=  MODE_PIN13; /* AUD Enable */
  86         value &= ~MODE_PIN14; /* Normal Operation */
  87
  88         return value;
  89 }
  90
  91 static int apsh4ad0a_clk_init(void)
  92 {
  93         struct clk *clk;
  94         int ret;
  95
  96         clk = clk_get(NULL, "extal");
  97         if (!clk || IS_ERR(clk))
  98                 return PTR_ERR(clk);
  99         ret = clk_set_rate(clk, 33333000);
 100         clk_put(clk);
 101
 102         return ret;
 103 }
 104
 105 /* Initialize the board */
 106 static void __init apsh4ad0a_setup(char **cmdline_p)
 107 {
 108         pr_info("Alpha Project AP-SH4AD-0A support:\n");
 109 }
 110
 111 static void __init apsh4ad0a_init_irq(void)
 112 {
 113         plat_irq_setup_pins(IRQ_MODE_IRQ3210);
 114 }
 115
 116 /*
 117  * The Machine Vector
 118  */
 119 static struct sh_machine_vector mv_apsh4ad0a __initmv = {
 120         .mv_name                = "AP-SH4AD-0A",
 121         .mv_setup               = apsh4ad0a_setup,
 122         .mv_mode_pins           = apsh4ad0a_mode_pins,
 123         .mv_clk_init            = apsh4ad0a_clk_init,
 124         .mv_init_irq            = apsh4ad0a_init_irq,
 125 };