release/src-rt-6.x/linux/linux-2.6/arch/sh/boards/renesas/r7780rp/setup.c

   1 /*
   2  * arch/sh/boards/renesas/r7780rp/setup.c
   3  *
   4  * Renesas Solutions Highlander Support.
   5  *
   6  * Copyright (C) 2002 Atom Create Engineering Co., Ltd.
   7  * Copyright (C) 2005 - 2007 Paul Mundt
   8  *
   9  * This contains support for the R7780RP-1, R7780MP, and R7785RP
  10  * Highlander modules.
  11  *
  12  * This file is subject to the terms and conditions of the GNU General Public
  13  * License.  See the file "COPYING" in the main directory of this archive
  14  * for more details.
  15  */
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/pata_platform.h>
  19 #include <asm/machvec.h>
  20 #include <asm/r7780rp.h>
  21 #include <asm/clock.h>
  22 #include <asm/io.h>
  23
  24 static struct resource cf_ide_resources[] = {
  25         [0] = {
  26                 .start  = PA_AREA5_IO + 0x1000,
  27                 .end    = PA_AREA5_IO + 0x1000 + 0x08 - 1,
  28                 .flags  = IORESOURCE_MEM,
  29         },
  30         [1] = {
  31                 .start  = PA_AREA5_IO + 0x80c,
  32                 .end    = PA_AREA5_IO + 0x80c + 0x16 - 1,
  33                 .flags  = IORESOURCE_MEM,
  34         },
  35         [2] = {
  36 #ifdef CONFIG_SH_R7780RP
  37                 .start  = 4,
  38 #else
  39                 .start  = 1,
  40 #endif
  41                 .flags  = IORESOURCE_IRQ,
  42         },
  43 };
  44
  45 static struct pata_platform_info pata_info = {
  46         .ioport_shift   = 1,
  47 };
  48
  49 static struct platform_device cf_ide_device  = {
  50         .name           = "pata_platform",
  51         .id             = -1,
  52         .num_resources  = ARRAY_SIZE(cf_ide_resources),
  53         .resource       = cf_ide_resources,
  54         .dev    = {
  55                 .platform_data  = &pata_info,
  56         },
  57 };
  58
  59 static unsigned char heartbeat_bit_pos[] = { 2, 1, 0, 3, 6, 5, 4, 7 };
  60
  61 static struct resource heartbeat_resources[] = {
  62         [0] = {
  63                 .start  = PA_OBLED,
  64                 .end    = PA_OBLED + ARRAY_SIZE(heartbeat_bit_pos) - 1,
  65                 .flags  = IORESOURCE_MEM,
  66         },
  67 };
  68
  69 static struct platform_device heartbeat_device = {
  70         .name           = "heartbeat",
  71         .id             = -1,
  72
  73         /* R7785RP has a slightly more sensible FPGA.. */
  74 #ifndef CONFIG_SH_R7785RP
  75         .dev    = {
  76                 .platform_data  = heartbeat_bit_pos,
  77         },
  78 #endif
  79         .num_resources  = ARRAY_SIZE(heartbeat_resources),
  80         .resource       = heartbeat_resources,
  81 };
  82
  83 static struct platform_device *r7780rp_devices[] __initdata = {
  84         &cf_ide_device,
  85         &heartbeat_device,
  86 };
  87
  88 static int __init r7780rp_devices_setup(void)
  89 {
  90         return platform_add_devices(r7780rp_devices,
  91                                     ARRAY_SIZE(r7780rp_devices));
  92 }
  93 device_initcall(r7780rp_devices_setup);
  94
  95 /*
  96  * Platform specific clocks
  97  */
  98 static void ivdr_clk_enable(struct clk *clk)
  99 {
 100         ctrl_outw(ctrl_inw(PA_IVDRCTL) | (1 << IVDR_CK_ON), PA_IVDRCTL);
 101 }
 102
 103 static void ivdr_clk_disable(struct clk *clk)
 104 {
 105         ctrl_outw(ctrl_inw(PA_IVDRCTL) & ~(1 << IVDR_CK_ON), PA_IVDRCTL);
 106 }
 107
 108 static struct clk_ops ivdr_clk_ops = {
 109         .enable         = ivdr_clk_enable,
 110         .disable        = ivdr_clk_disable,
 111 };
 112
 113 static struct clk ivdr_clk = {
 114         .name           = "ivdr_clk",
 115         .ops            = &ivdr_clk_ops,
 116 };
 117
 118 static struct clk *r7780rp_clocks[] = {
 119         &ivdr_clk,
 120 };
 121
 122 static void r7780rp_power_off(void)
 123 {
 124         if (mach_is_r7780mp() || mach_is_r7785rp())
 125                 ctrl_outw(0x0001, PA_POFF);
 126 }
 127
 128 /*
 129  * Initialize the board
 130  */
 131 static void __init highlander_setup(char **cmdline_p)
 132 {
 133         u16 ver = ctrl_inw(PA_VERREG);
 134         int i;
 135
 136         printk(KERN_INFO "Renesas Solutions Highlander %s support.\n",
 137                          mach_is_r7780rp() ? "R7780RP-1" :
 138                          mach_is_r7780mp() ? "R7780MP"   :
 139                                              "R7785RP");
 140
 141         printk(KERN_INFO "Board version: %d (revision %d), "
 142                          "FPGA version: %d (revision %d)\n",
 143                          (ver >> 12) & 0xf, (ver >> 8) & 0xf,
 144                          (ver >>  4) & 0xf, ver & 0xf);
 145
 146         /*
 147          * Enable the important clocks right away..
 148          */
 149         for (i = 0; i < ARRAY_SIZE(r7780rp_clocks); i++) {
 150                 struct clk *clk = r7780rp_clocks[i];
 151
 152                 clk_register(clk);
 153                 clk_enable(clk);
 154         }
 155
 156         ctrl_outw(0x0000, PA_OBLED);    /* Clear LED. */
 157
 158         if (mach_is_r7780rp())
 159                 ctrl_outw(0x0001, PA_SDPOW);    /* SD Power ON */
 160
 161         ctrl_outw(ctrl_inw(PA_IVDRCTL) | 0x01, PA_IVDRCTL);     /* Si13112 */
 162
 163         pm_power_off = r7780rp_power_off;
 164 }
 165
 166 /*
 167  * The Machine Vector
 168  */
 169 struct sh_machine_vector mv_highlander __initmv = {
 170         .mv_name                = "Highlander",
 171         .mv_nr_irqs             = 109,
 172         .mv_setup               = highlander_setup,
 173         .mv_init_irq            = highlander_init_irq,
 174 };
 175 ALIAS_MV(highlander)