arch/arm/mach-ux500/cpu-db8500.c

   1 /*
   2  * Copyright (C) 2008-2009 ST-Ericsson
   3  *
   4  * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
   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  */
  11 #include <linux/types.h>
  12 #include <linux/init.h>
  13 #include <linux/device.h>
  14 #include <linux/amba/bus.h>
  15 #include <linux/irq.h>
  16 #include <linux/gpio.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/io.h>
  19
  20 #include <asm/mach/map.h>
  21 #include <mach/hardware.h>
  22 #include <mach/setup.h>
  23 #include <mach/devices.h>
  24
  25 #include "devices-db8500.h"
  26
  27 static struct platform_device *platform_devs[] __initdata = {
  28         &u8500_dma40_device,
  29 };
  30
  31 /* minimum static i/o mapping required to boot U8500 platforms */
  32 static struct map_desc u8500_uart_io_desc[] __initdata = {
  33         __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K),
  34         __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K),
  35 };
  36
  37 static struct map_desc u8500_io_desc[] __initdata = {
  38         __IO_DEV_DESC(U8500_GIC_CPU_BASE, SZ_4K),
  39         __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
  40         __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K),
  41         __IO_DEV_DESC(U8500_TWD_BASE, SZ_4K),
  42         __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
  43         __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K),
  44         __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K),
  45
  46         __IO_DEV_DESC(U8500_CLKRST1_BASE, SZ_4K),
  47         __IO_DEV_DESC(U8500_CLKRST2_BASE, SZ_4K),
  48         __IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K),
  49         __IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K),
  50         __IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K),
  51
  52         __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K),
  53         __IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K),
  54         __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),
  55         __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),
  56         __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K),
  57 };
  58
  59 static struct map_desc u8500_ed_io_desc[] __initdata = {
  60         __IO_DEV_DESC(U8500_MTU0_BASE_ED, SZ_4K),
  61         __IO_DEV_DESC(U8500_CLKRST7_BASE_ED, SZ_8K),
  62 };
  63
  64 static struct map_desc u8500_v1_io_desc[] __initdata = {
  65         __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
  66         __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE_V1, SZ_4K),
  67 };
  68
  69 static struct map_desc u8500_v2_io_desc[] __initdata = {
  70         __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
  71 };
  72
  73 void __init u8500_map_io(void)
  74 {
  75         /*
  76          * Map the UARTs early so that the DEBUG_LL stuff continues to work.
  77          */
  78         iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc));
  79
  80         ux500_map_io();
  81
  82         iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
  83
  84         if (cpu_is_u8500ed())
  85                 iotable_init(u8500_ed_io_desc, ARRAY_SIZE(u8500_ed_io_desc));
  86         else if (cpu_is_u8500v1())
  87                 iotable_init(u8500_v1_io_desc, ARRAY_SIZE(u8500_v1_io_desc));
  88         else if (cpu_is_u8500v2())
  89                 iotable_init(u8500_v2_io_desc, ARRAY_SIZE(u8500_v2_io_desc));
  90 }
  91
  92 static resource_size_t __initdata db8500_gpio_base[] = {
  93         U8500_GPIOBANK0_BASE,
  94         U8500_GPIOBANK1_BASE,
  95         U8500_GPIOBANK2_BASE,
  96         U8500_GPIOBANK3_BASE,
  97         U8500_GPIOBANK4_BASE,
  98         U8500_GPIOBANK5_BASE,
  99         U8500_GPIOBANK6_BASE,
 100         U8500_GPIOBANK7_BASE,
 101         U8500_GPIOBANK8_BASE,
 102 };
 103
 104 static void __init db8500_add_gpios(void)
 105 {
 106         struct nmk_gpio_platform_data pdata = {
 107                 /* No custom data yet */
 108         };
 109
 110         dbx500_add_gpios(ARRAY_AND_SIZE(db8500_gpio_base),
 111                          IRQ_DB8500_GPIO0, &pdata);
 112 }
 113
 114 /*
 115  * This function is called from the board init
 116  */
 117 void __init u8500_init_devices(void)
 118 {
 119         if (cpu_is_u8500ed())
 120                 dma40_u8500ed_fixup();
 121
 122         db8500_add_rtc();
 123         db8500_add_gpios();
 124
 125         platform_device_register_simple("cpufreq-u8500", -1, NULL, 0);
 126         platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
 127
 128         return ;
 129 }