release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sh/boards/board-urquell.c

   1 /*
   2  * Renesas Technology Corp. SH7786 Urquell Support.
   3  *
   4  * Copyright (C) 2008  Kuninori Morimoto <morimoto.kuninori@renesas.com>
   5  * Copyright (C) 2009, 2010  Paul Mundt
   6  *
   7  * Based on board-sh7785lcr.c
   8  * Copyright (C) 2008  Yoshihiro Shimoda
   9  *
  10  * This file is subject to the terms and conditions of the GNU General Public
  11  * License.  See the file "COPYING" in the main directory of this archive
  12  * for more details.
  13  */
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/fb.h>
  17 #include <linux/smc91x.h>
  18 #include <linux/mtd/physmap.h>
  19 #include <linux/delay.h>
  20 #include <linux/gpio.h>
  21 #include <linux/irq.h>
  22 #include <linux/clk.h>
  23 #include <mach/urquell.h>
  24 #include <cpu/sh7786.h>
  25 #include <asm/heartbeat.h>
  26 #include <asm/sizes.h>
  27 #include <asm/smp-ops.h>
  28
  29
  30 /* HeartBeat */
  31 static struct resource heartbeat_resource = {
  32         .start  = BOARDREG(SLEDR),
  33         .end    = BOARDREG(SLEDR),
  34         .flags  = IORESOURCE_MEM | IORESOURCE_MEM_16BIT,
  35 };
  36
  37 static struct platform_device heartbeat_device = {
  38         .name           = "heartbeat",
  39         .id             = -1,
  40         .num_resources  = 1,
  41         .resource       = &heartbeat_resource,
  42 };
  43
  44 /* LAN91C111 */
  45 static struct smc91x_platdata smc91x_info = {
  46         .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
  47 };
  48
  49 static struct resource smc91x_eth_resources[] = {
  50         [0] = {
  51                 .name   = "SMC91C111" ,
  52                 .start  = 0x05800300,
  53                 .end    = 0x0580030f,
  54                 .flags  = IORESOURCE_MEM,
  55         },
  56         [1] = {
  57                 .start  = 11,
  58                 .flags  = IORESOURCE_IRQ,
  59         },
  60 };
  61
  62 static struct platform_device smc91x_eth_device = {
  63         .name           = "smc91x",
  64         .num_resources  = ARRAY_SIZE(smc91x_eth_resources),
  65         .resource       = smc91x_eth_resources,
  66         .dev    = {
  67                 .platform_data  = &smc91x_info,
  68         },
  69 };
  70
  71 /* Nor Flash */
  72 static struct mtd_partition nor_flash_partitions[] = {
  73         {
  74                 .name           = "loader",
  75                 .offset         = 0x00000000,
  76                 .size           = SZ_512K,
  77                 .mask_flags     = MTD_WRITEABLE,        /* Read-only */
  78         },
  79         {
  80                 .name           = "bootenv",
  81                 .offset         = MTDPART_OFS_APPEND,
  82                 .size           = SZ_512K,
  83                 .mask_flags     = MTD_WRITEABLE,        /* Read-only */
  84         },
  85         {
  86                 .name           = "kernel",
  87                 .offset         = MTDPART_OFS_APPEND,
  88                 .size           = SZ_4M,
  89         },
  90         {
  91                 .name           = "data",
  92                 .offset         = MTDPART_OFS_APPEND,
  93                 .size           = MTDPART_SIZ_FULL,
  94         },
  95 };
  96
  97 static struct physmap_flash_data nor_flash_data = {
  98         .width          = 2,
  99         .parts          = nor_flash_partitions,
 100         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
 101 };
 102
 103 static struct resource nor_flash_resources[] = {
 104         [0] = {
 105                 .start  = NOR_FLASH_ADDR,
 106                 .end    = NOR_FLASH_ADDR + NOR_FLASH_SIZE - 1,
 107                 .flags  = IORESOURCE_MEM,
 108         }
 109 };
 110
 111 static struct platform_device nor_flash_device = {
 112         .name           = "physmap-flash",
 113         .dev            = {
 114                 .platform_data  = &nor_flash_data,
 115         },
 116         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 117         .resource       = nor_flash_resources,
 118 };
 119
 120 static struct platform_device *urquell_devices[] __initdata = {
 121         &heartbeat_device,
 122         &smc91x_eth_device,
 123         &nor_flash_device,
 124 };
 125
 126 static int __init urquell_devices_setup(void)
 127 {
 128         /* USB */
 129         gpio_request(GPIO_FN_USB_OVC0,  NULL);
 130         gpio_request(GPIO_FN_USB_PENC0, NULL);
 131
 132         /* enable LAN */
 133         __raw_writew(__raw_readw(UBOARDREG(IRL2MSKR)) & ~0x00000001,
 134                   UBOARDREG(IRL2MSKR));
 135
 136         return platform_add_devices(urquell_devices,
 137                                     ARRAY_SIZE(urquell_devices));
 138 }
 139 device_initcall(urquell_devices_setup);
 140
 141 static void urquell_power_off(void)
 142 {
 143         __raw_writew(0xa5a5, UBOARDREG(SRSTR));
 144 }
 145
 146 static void __init urquell_init_irq(void)
 147 {
 148         plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK);
 149 }
 150
 151 static int urquell_mode_pins(void)
 152 {
 153         return __raw_readw(UBOARDREG(MDSWMR));
 154 }
 155
 156 static int urquell_clk_init(void)
 157 {
 158         struct clk *clk;
 159         int ret;
 160
 161         /*
 162          * Only handle the EXTAL case, anyone interfacing a crystal
 163          * resonator will need to provide their own input clock.
 164          */
 165         if (test_mode_pin(MODE_PIN9))
 166                 return -EINVAL;
 167
 168         clk = clk_get(NULL, "extal");
 169         if (!clk || IS_ERR(clk))
 170                 return PTR_ERR(clk);
 171         ret = clk_set_rate(clk, 33333333);
 172         clk_put(clk);
 173
 174         return ret;
 175 }
 176
 177 /* Initialize the board */
 178 static void __init urquell_setup(char **cmdline_p)
 179 {
 180         printk(KERN_INFO "Renesas Technology Corp. Urquell support.\n");
 181
 182         pm_power_off = urquell_power_off;
 183
 184         register_smp_ops(&shx3_smp_ops);
 185 }
 186
 187 /*
 188  * The Machine Vector
 189  */
 190 static struct sh_machine_vector mv_urquell __initmv = {
 191         .mv_name        = "Urquell",
 192         .mv_setup       = urquell_setup,
 193         .mv_init_irq    = urquell_init_irq,
 194         .mv_mode_pins   = urquell_mode_pins,
 195         .mv_clk_init    = urquell_clk_init,
 196 };