LXR linux/arch/arm/mach-gemini/devices.c

   1/*
   2 * Common devices definition for Gemini
   3 *
   4 * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
   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#include <linux/kernel.h>
  11#include <linux/init.h>
  12#include <linux/io.h>
  13#include <linux/platform_device.h>
  14#include <linux/serial_8250.h>
  15#include <linux/mtd/physmap.h>
  16
  17#include <mach/irqs.h>
  18#include <mach/hardware.h>
  19#include <mach/global_reg.h>
  20
  21static struct plat_serial8250_port serial_platform_data[] = {
  22        {
  23                .membase        = (void *)IO_ADDRESS(GEMINI_UART_BASE),
  24                .mapbase        = GEMINI_UART_BASE,
  25                .irq            = IRQ_UART,
  26                .uartclk        = UART_CLK,
  27                .regshift       = 2,
  28                .iotype         = UPIO_MEM,
  29                .type           = PORT_16550A,
  30                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE,
  31        },
  32        {},
  33};
  34
  35static struct platform_device serial_device = {
  36        .name   = "serial8250",
  37        .id     = PLAT8250_DEV_PLATFORM,
  38        .dev    = {
  39                .platform_data = serial_platform_data,
  40        },
  41};
  42
  43int platform_register_uart(void)
  44{
  45        return platform_device_register(&serial_device);
  46}
  47
  48static struct resource flash_resource = {
  49        .start  = GEMINI_FLASH_BASE,
  50        .flags  = IORESOURCE_MEM,
  51};
  52
  53static struct physmap_flash_data pflash_platform_data = {};
  54
  55static struct platform_device pflash_device = {
  56        .name   = "physmap-flash",
  57        .id     = 0,
  58        .dev    = {
  59                .platform_data = &pflash_platform_data,
  60        },
  61        .resource = &flash_resource,
  62        .num_resources = 1,
  63};
  64
  65int platform_register_pflash(unsigned int size, struct mtd_partition *parts,
  66                             unsigned int nr_parts)
  67{
  68        unsigned int reg;
  69
  70        reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS);
  71
  72        if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL)
  73                return -ENXIO;
  74
  75        if (reg & FLASH_WIDTH_16BIT)
  76                pflash_platform_data.width = 2;
  77        else
  78                pflash_platform_data.width = 1;
  79
  80        /* enable parallel flash pins and disable others */
  81        reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
  82        reg &= ~PFLASH_PADS_DISABLE;
  83        reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE;
  84        __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
  85
  86        flash_resource.end = flash_resource.start + size - 1;
  87
  88        pflash_platform_data.parts = parts;
  89        pflash_platform_data.nr_parts = nr_parts;
  90
  91        return platform_device_register(&pflash_device);
  92}
  93
  94static struct resource gemini_rtc_resources[] = {
  95        [0] = {
  96                .start  = GEMINI_RTC_BASE,
  97                .end    = GEMINI_RTC_BASE + 0x24,
  98                .flags  = IORESOURCE_MEM,
  99        },
 100        [1] = {
 101                .start  = IRQ_RTC,
 102                .end    = IRQ_RTC,
 103                .flags  = IORESOURCE_IRQ,
 104        },
 105};
 106
 107static struct platform_device gemini_rtc_device = {
 108        .name           = "rtc-gemini",
 109        .id             = 0,
 110        .num_resources  = ARRAY_SIZE(gemini_rtc_resources),
 111        .resource       = gemini_rtc_resources,
 112};
 113
 114int __init platform_register_rtc(void)
 115{
 116        return platform_device_register(&gemini_rtc_device);
 117}
 118
 119