arch/arm/mach-nomadik/cpu-8815.c

   1 /*
   2  * Copyright STMicroelectronics, 2007.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include <linux/types.h>
  20 #include <linux/init.h>
  21 #include <linux/device.h>
  22 #include <linux/amba/bus.h>
  23 #include <linux/gpio.h>
  24
  25 #include <mach/hardware.h>
  26 #include <mach/irqs.h>
  27 #include <asm/mach/map.h>
  28 #include <asm/hardware/vic.h>
  29
  30 /* The 8815 has 4 GPIO blocks, let's register them immediately */
  31 static struct nmk_gpio_platform_data cpu8815_gpio[] = {
  32         {
  33                 .name = "GPIO-0-31",
  34                 .first_gpio = 0,
  35                 .first_irq = NOMADIK_GPIO_TO_IRQ(0),
  36                 .parent_irq = IRQ_GPIO0,
  37         }, {
  38                 .name = "GPIO-32-63",
  39                 .first_gpio = 32,
  40                 .first_irq = NOMADIK_GPIO_TO_IRQ(32),
  41                 .parent_irq = IRQ_GPIO1,
  42         }, {
  43                 .name = "GPIO-64-95",
  44                 .first_gpio = 64,
  45                 .first_irq = NOMADIK_GPIO_TO_IRQ(64),
  46                 .parent_irq = IRQ_GPIO2,
  47         }, {
  48                 .name = "GPIO-96-127", /* 124..127 not routed to pin */
  49                 .first_gpio = 96,
  50                 .first_irq = NOMADIK_GPIO_TO_IRQ(96),
  51                 .parent_irq = IRQ_GPIO3,
  52         }
  53 };
  54
  55 #define __MEM_4K_RESOURCE(x) \
  56         .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
  57
  58 static struct amba_device cpu8815_amba_gpio[] = {
  59         {
  60                 .dev = {
  61                         .init_name = "gpio0",
  62                         .platform_data = cpu8815_gpio + 0,
  63                 },
  64                 __MEM_4K_RESOURCE(NOMADIK_GPIO0_BASE),
  65         }, {
  66                 .dev = {
  67                         .init_name = "gpio1",
  68                         .platform_data = cpu8815_gpio + 1,
  69                 },
  70                 __MEM_4K_RESOURCE(NOMADIK_GPIO1_BASE),
  71         }, {
  72                 .dev = {
  73                         .init_name = "gpio2",
  74                         .platform_data = cpu8815_gpio + 2,
  75                 },
  76                 __MEM_4K_RESOURCE(NOMADIK_GPIO2_BASE),
  77         }, {
  78                 .dev = {
  79                         .init_name = "gpio3",
  80                         .platform_data = cpu8815_gpio + 3,
  81                 },
  82                 __MEM_4K_RESOURCE(NOMADIK_GPIO3_BASE),
  83         },
  84 };
  85
  86 static struct amba_device *amba_devs[] __initdata = {
  87         cpu8815_amba_gpio + 0,
  88         cpu8815_amba_gpio + 1,
  89         cpu8815_amba_gpio + 2,
  90         cpu8815_amba_gpio + 3,
  91 };
  92
  93 static int __init cpu8815_init(void)
  94 {
  95         int i;
  96
  97         for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
  98                 amba_device_register(amba_devs[i], &iomem_resource);
  99         return 0;
 100 }
 101 arch_initcall(cpu8815_init);
 102
 103 /* All SoC devices live in the same area (see hardware.h) */
 104 static struct map_desc nomadik_io_desc[] __initdata = {
 105         {
 106                 .virtual =      NOMADIK_IO_VIRTUAL,
 107                 .pfn =          __phys_to_pfn(NOMADIK_IO_PHYSICAL),
 108                 .length =       NOMADIK_IO_SIZE,
 109                 .type =         MT_DEVICE,
 110         }
 111         /* static ram and secured ram may be added later */
 112 };
 113
 114 void __init cpu8815_map_io(void)
 115 {
 116         iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
 117 }
 118
 119 void __init cpu8815_init_irq(void)
 120 {
 121         /* This modified VIC cell has two register blocks, at 0 and 0x20 */
 122         vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START +  0, ~0, 0);
 123         vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
 124 }
 125
 126 /*
 127  * This function is called from the board init ("init_machine").
 128  * Currently nothing is done as we can't register amba devs so early.
 129  */
 130  void __init cpu8815_platform_init(void)
 131 {
 132          return;
 133 }