arch/arm/mach-nomadik/board-nhk8815.c

   1 /*
   2  *  linux/arch/arm/mach-nomadik/board-8815nhk.c
   3  *
   4  *  Copyright (C) STMicroelectronics
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  *  NHK15 board specifc driver definition
  11  */
  12 #include <linux/types.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/amba/bus.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/gpio.h>
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/irq.h>
  22 #include <mach/setup.h>
  23 #include "clock.h"
  24
  25 #define __MEM_4K_RESOURCE(x) \
  26         .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
  27
  28 static struct amba_device uart0_device = {
  29         .dev = { .init_name = "uart0" },
  30         __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
  31         .irq = {IRQ_UART0, NO_IRQ},
  32 };
  33
  34 static struct amba_device uart1_device = {
  35         .dev = { .init_name = "uart1" },
  36         __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
  37         .irq = {IRQ_UART1, NO_IRQ},
  38 };
  39
  40 static struct amba_device *amba_devs[] __initdata = {
  41         &uart0_device,
  42         &uart1_device,
  43 };
  44
  45 /* We have a fixed clock alone, by now */
  46 static struct clk nhk8815_clk_48 = {
  47         .rate = 48*1000*1000,
  48 };
  49
  50 static struct resource nhk8815_eth_resources[] = {
  51         {
  52                 .name = "smc91x-regs",
  53                 .start = 0x34000000 + 0x300,
  54                 .end = 0x34000000 + SZ_64K - 1,
  55                 .flags = IORESOURCE_MEM,
  56         }, {
  57                 .start = NOMADIK_GPIO_TO_IRQ(115),
  58                 .end = NOMADIK_GPIO_TO_IRQ(115),
  59                 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
  60         }
  61 };
  62
  63 static struct platform_device nhk8815_eth_device = {
  64         .name = "smc91x",
  65         .resource = nhk8815_eth_resources,
  66         .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
  67 };
  68
  69 static int __init nhk8815_eth_init(void)
  70 {
  71         int gpio_nr = 115; /* hardwired in the board */
  72         int err;
  73
  74         err = gpio_request(gpio_nr, "eth_irq");
  75         if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
  76         if (!err) err = gpio_direction_input(gpio_nr);
  77         if (err)
  78                 pr_err("Error %i in %s\n", err, __func__);
  79         return err;
  80 }
  81 device_initcall(nhk8815_eth_init);
  82
  83 static struct platform_device *nhk8815_platform_devices[] __initdata = {
  84         &nhk8815_eth_device,
  85         /* will add more devices */
  86 };
  87
  88 static void __init nhk8815_platform_init(void)
  89 {
  90         int i;
  91
  92         cpu8815_platform_init();
  93         platform_add_devices(nhk8815_platform_devices,
  94                              ARRAY_SIZE(nhk8815_platform_devices));
  95
  96         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
  97                 nmdk_clk_create(&nhk8815_clk_48, amba_devs[i]->dev.init_name);
  98                 amba_device_register(amba_devs[i], &iomem_resource);
  99         }
 100 }
 101
 102 MACHINE_START(NOMADIK, "NHK8815")
 103         /* Maintainer: ST MicroElectronics */
 104         .phys_io        = NOMADIK_UART0_BASE,
 105         .io_pg_offst    = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
 106         .boot_params    = 0x100,
 107         .map_io         = cpu8815_map_io,
 108         .init_irq       = cpu8815_init_irq,
 109         .timer          = &nomadik_timer,
 110         .init_machine   = nhk8815_platform_init,
 111 MACHINE_END