kernel/arch/sh/boards/board-apsh4a3a.c

   1 /*
   2  * ALPHAPROJECT AP-SH4A-3A Support.
   3  *
   4  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
   5  * Copyright (C) 2008  Yoshihiro Shimoda
   6  * Copyright (C) 2009  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/mtd/physmap.h>
  16 #include <linux/regulator/fixed.h>
  17 #include <linux/regulator/machine.h>
  18 #include <linux/smsc911x.h>
  19 #include <linux/irq.h>
  20 #include <linux/clk.h>
  21 #include <asm/machvec.h>
  22 #include <asm/sizes.h>
  23 #include <asm/clock.h>
  24
  25 static struct mtd_partition nor_flash_partitions[] = {
  26         {
  27                 .name           = "loader",
  28                 .offset         = 0x00000000,
  29                 .size           = 512 * 1024,
  30         },
  31         {
  32                 .name           = "bootenv",
  33                 .offset         = MTDPART_OFS_APPEND,
  34                 .size           = 512 * 1024,
  35         },
  36         {
  37                 .name           = "kernel",
  38                 .offset         = MTDPART_OFS_APPEND,
  39                 .size           = 4 * 1024 * 1024,
  40         },
  41         {
  42                 .name           = "data",
  43                 .offset         = MTDPART_OFS_APPEND,
  44                 .size           = MTDPART_SIZ_FULL,
  45         },
  46 };
  47
  48 static struct physmap_flash_data nor_flash_data = {
  49         .width          = 4,
  50         .parts          = nor_flash_partitions,
  51         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
  52 };
  53
  54 static struct resource nor_flash_resources[] = {
  55         [0]     = {
  56                 .start  = 0x00000000,
  57                 .end    = 0x01000000 - 1,
  58                 .flags  = IORESOURCE_MEM,
  59         }
  60 };
  61
  62 static struct platform_device nor_flash_device = {
  63         .name           = "physmap-flash",
  64         .dev            = {
  65                 .platform_data  = &nor_flash_data,
  66         },
  67         .num_resources  = ARRAY_SIZE(nor_flash_resources),
  68         .resource       = nor_flash_resources,
  69 };
  70
  71 /* Dummy supplies, where voltage doesn't matter */
  72 static struct regulator_consumer_supply dummy_supplies[] = {
  73         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  74         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  75 };
  76
  77 static struct resource smsc911x_resources[] = {
  78         [0] = {
  79                 .name           = "smsc911x-memory",
  80                 .start          = 0xA4000000,
  81                 .end            = 0xA4000000 + SZ_256 - 1,
  82                 .flags          = IORESOURCE_MEM,
  83         },
  84         [1] = {
  85                 .name           = "smsc911x-irq",
  86                 .start          = evt2irq(0x200),
  87                 .end            = evt2irq(0x200),
  88                 .flags          = IORESOURCE_IRQ,
  89         },
  90 };
  91
  92 static struct smsc911x_platform_config smsc911x_config = {
  93         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  94         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  95         .flags          = SMSC911X_USE_16BIT,
  96         .phy_interface  = PHY_INTERFACE_MODE_MII,
  97 };
  98
  99 static struct platform_device smsc911x_device = {
 100         .name           = "smsc911x",
 101         .id             = -1,
 102         .num_resources  = ARRAY_SIZE(smsc911x_resources),
 103         .resource       = smsc911x_resources,
 104         .dev = {
 105                 .platform_data = &smsc911x_config,
 106         },
 107 };
 108
 109 static struct platform_device *apsh4a3a_devices[] __initdata = {
 110         &nor_flash_device,
 111         &smsc911x_device,
 112 };
 113
 114 static int __init apsh4a3a_devices_setup(void)
 115 {
 116         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 117
 118         return platform_add_devices(apsh4a3a_devices,
 119                                     ARRAY_SIZE(apsh4a3a_devices));
 120 }
 121 device_initcall(apsh4a3a_devices_setup);
 122
 123 static int apsh4a3a_clk_init(void)
 124 {
 125         struct clk *clk;
 126         int ret;
 127
 128         clk = clk_get(NULL, "extal");
 129         if (IS_ERR(clk))
 130                 return PTR_ERR(clk);
 131         ret = clk_set_rate(clk, 33333000);
 132         clk_put(clk);
 133
 134         return ret;
 135 }
 136
 137 /* Initialize the board */
 138 static void __init apsh4a3a_setup(char **cmdline_p)
 139 {
 140         printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n");
 141 }
 142
 143 static void __init apsh4a3a_init_irq(void)
 144 {
 145         plat_irq_setup_pins(IRQ_MODE_IRQ7654);
 146 }
 147
 148 /* Return the board specific boot mode pin configuration */
 149 static int apsh4a3a_mode_pins(void)
 150 {
 151         int value = 0;
 152
 153         /* These are the factory default settings of SW1 and SW2.
 154          * If you change these dip switches then you will need to
 155          * adjust the values below as well.
 156          */
 157         value &= ~MODE_PIN0;  /* Clock Mode 16 */
 158         value &= ~MODE_PIN1;
 159         value &= ~MODE_PIN2;
 160         value &= ~MODE_PIN3;
 161         value |=  MODE_PIN4;
 162         value &= ~MODE_PIN5;  /* 16-bit Area0 bus width */
 163         value |=  MODE_PIN6;  /* Area 0 SRAM interface */
 164         value |=  MODE_PIN7;
 165         value |=  MODE_PIN8;  /* Little Endian */
 166         value |=  MODE_PIN9;  /* Master Mode */
 167         value |=  MODE_PIN10; /* Crystal resonator */
 168         value |=  MODE_PIN11; /* Display Unit */
 169         value |=  MODE_PIN12;
 170         value &= ~MODE_PIN13; /* 29-bit address mode */
 171         value |=  MODE_PIN14; /* No PLL step-up */
 172
 173         return value;
 174 }
 175
 176 /*
 177  * The Machine Vector
 178  */
 179 static struct sh_machine_vector mv_apsh4a3a __initmv = {
 180         .mv_name                = "AP-SH4A-3A",
 181         .mv_setup               = apsh4a3a_setup,
 182         .mv_clk_init            = apsh4a3a_clk_init,
 183         .mv_init_irq            = apsh4a3a_init_irq,
 184         .mv_mode_pins           = apsh4a3a_mode_pins,
 185 };