arch/sh/boards/board-apsh4ad0a.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * ALPHAPROJECT AP-SH4AD-0A Support.
   4  *
   5  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
   6  * Copyright (C) 2010  Matt Fleming
   7  * Copyright (C) 2010  Paul Mundt
   8  */
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/io.h>
  12 #include <linux/regulator/fixed.h>
  13 #include <linux/regulator/machine.h>
  14 #include <linux/smsc911x.h>
  15 #include <linux/irq.h>
  16 #include <linux/clk.h>
  17 #include <asm/machvec.h>
  18 #include <linux/sizes.h>
  19
  20 /* Dummy supplies, where voltage doesn't matter */
  21 static struct regulator_consumer_supply dummy_supplies[] = {
  22         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  23         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  24 };
  25
  26 static struct resource smsc911x_resources[] = {
  27         [0] = {
  28                 .name           = "smsc911x-memory",
  29                 .start          = 0xA4000000,
  30                 .end            = 0xA4000000 + SZ_256 - 1,
  31                 .flags          = IORESOURCE_MEM,
  32         },
  33         [1] = {
  34                 .name           = "smsc911x-irq",
  35                 .start          = evt2irq(0x200),
  36                 .end            = evt2irq(0x200),
  37                 .flags          = IORESOURCE_IRQ,
  38         },
  39 };
  40
  41 static struct smsc911x_platform_config smsc911x_config = {
  42         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  43         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  44         .flags          = SMSC911X_USE_16BIT,
  45         .phy_interface  = PHY_INTERFACE_MODE_MII,
  46 };
  47
  48 static struct platform_device smsc911x_device = {
  49         .name           = "smsc911x",
  50         .id             = -1,
  51         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  52         .resource       = smsc911x_resources,
  53         .dev = {
  54                 .platform_data = &smsc911x_config,
  55         },
  56 };
  57
  58 static struct platform_device *apsh4ad0a_devices[] __initdata = {
  59         &smsc911x_device,
  60 };
  61
  62 static int __init apsh4ad0a_devices_setup(void)
  63 {
  64         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
  65
  66         return platform_add_devices(apsh4ad0a_devices,
  67                                     ARRAY_SIZE(apsh4ad0a_devices));
  68 }
  69 device_initcall(apsh4ad0a_devices_setup);
  70
  71 static int apsh4ad0a_mode_pins(void)
  72 {
  73         int value = 0;
  74
  75         /* These are the factory default settings of SW1 and SW2.
  76          * If you change these dip switches then you will need to
  77          * adjust the values below as well.
  78          */
  79         value |=  MODE_PIN0;  /* Clock Mode 3 */
  80         value |=  MODE_PIN1;
  81         value &= ~MODE_PIN2;
  82         value &= ~MODE_PIN3;
  83         value &= ~MODE_PIN4;  /* 16-bit Area0 bus width  */
  84         value |=  MODE_PIN5;
  85         value |=  MODE_PIN6;
  86         value |=  MODE_PIN7;  /* Normal mode */
  87         value |=  MODE_PIN8;  /* Little Endian */
  88         value |=  MODE_PIN9;  /* Crystal resonator */
  89         value &= ~MODE_PIN10; /* 29-bit address mode */
  90         value &= ~MODE_PIN11; /* PCI-E Root port */
  91         value &= ~MODE_PIN12; /* 4 lane + 1 lane */
  92         value |=  MODE_PIN13; /* AUD Enable */
  93         value &= ~MODE_PIN14; /* Normal Operation */
  94
  95         return value;
  96 }
  97
  98 static int apsh4ad0a_clk_init(void)
  99 {
 100         struct clk *clk;
 101         int ret;
 102
 103         clk = clk_get(NULL, "extal");
 104         if (IS_ERR(clk))
 105                 return PTR_ERR(clk);
 106         ret = clk_set_rate(clk, 33333000);
 107         clk_put(clk);
 108
 109         return ret;
 110 }
 111
 112 /* Initialize the board */
 113 static void __init apsh4ad0a_setup(char **cmdline_p)
 114 {
 115         pr_info("Alpha Project AP-SH4AD-0A support:\n");
 116 }
 117
 118 static void __init apsh4ad0a_init_irq(void)
 119 {
 120         plat_irq_setup_pins(IRQ_MODE_IRQ3210);
 121 }
 122
 123 /*
 124  * The Machine Vector
 125  */
 126 static struct sh_machine_vector mv_apsh4ad0a __initmv = {
 127         .mv_name                = "AP-SH4AD-0A",
 128         .mv_setup               = apsh4ad0a_setup,
 129         .mv_mode_pins           = apsh4ad0a_mode_pins,
 130         .mv_clk_init            = apsh4ad0a_clk_init,
 131         .mv_init_irq            = apsh4ad0a_init_irq,
 132 };