arch/arm/mach-clps711x/board-edb7211.c

   1 /*
   2  *  Copyright (C) 2000, 2001 Blue Mug, Inc.  All Rights Reserved.
   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
  10 #include <linux/init.h>
  11 #include <linux/gpio.h>
  12 #include <linux/delay.h>
  13 #include <linux/memblock.h>
  14 #include <linux/types.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/backlight.h>
  17 #include <linux/platform_device.h>
  18
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/mtd/partitions.h>
  21
  22 #include <asm/setup.h>
  23 #include <asm/mach/map.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach-types.h>
  26
  27 #include <video/platform_lcd.h>
  28
  29 #include <mach/hardware.h>
  30
  31 #include "common.h"
  32
  33 #define VIDEORAM_SIZE           SZ_128K
  34
  35 #define EDB7211_LCD_DC_DC_EN    CLPS711X_GPIO(3, 1)
  36 #define EDB7211_LCDEN           CLPS711X_GPIO(3, 2)
  37 #define EDB7211_LCDBL           CLPS711X_GPIO(3, 3)
  38
  39 #define EDB7211_FLASH0_BASE     (CS0_PHYS_BASE)
  40 #define EDB7211_FLASH1_BASE     (CS1_PHYS_BASE)
  41 #define EDB7211_CS8900_BASE     (CS2_PHYS_BASE + 0x300)
  42 #define EDB7211_CS8900_IRQ      (IRQ_EINT3)
  43
  44 static struct resource edb7211_cs8900_resource[] __initdata = {
  45         DEFINE_RES_MEM(EDB7211_CS8900_BASE, SZ_1K),
  46         DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
  47 };
  48
  49 static struct mtd_partition edb7211_flash_partitions[] __initdata = {
  50         {
  51                 .name   = "Flash",
  52                 .offset = 0,
  53                 .size   = MTDPART_SIZ_FULL,
  54         },
  55 };
  56
  57 static struct physmap_flash_data edb7211_flash_pdata __initdata = {
  58         .width          = 4,
  59         .parts          = edb7211_flash_partitions,
  60         .nr_parts       = ARRAY_SIZE(edb7211_flash_partitions),
  61 };
  62
  63 static struct resource edb7211_flash_resources[] __initdata = {
  64         DEFINE_RES_MEM(EDB7211_FLASH0_BASE, SZ_8M),
  65         DEFINE_RES_MEM(EDB7211_FLASH1_BASE, SZ_8M),
  66 };
  67
  68 static struct platform_device edb7211_flash_pdev __initdata = {
  69         .name           = "physmap-flash",
  70         .id             = 0,
  71         .resource       = edb7211_flash_resources,
  72         .num_resources  = ARRAY_SIZE(edb7211_flash_resources),
  73         .dev    = {
  74                 .platform_data  = &edb7211_flash_pdata,
  75         },
  76 };
  77
  78 static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  79 {
  80         if (power) {
  81                 gpio_set_value(EDB7211_LCDEN, 1);
  82                 udelay(100);
  83                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
  84         } else {
  85                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
  86                 udelay(100);
  87                 gpio_set_value(EDB7211_LCDEN, 0);
  88         }
  89 }
  90
  91 static struct plat_lcd_data edb7211_lcd_power_pdata = {
  92         .set_power      = edb7211_lcd_power_set,
  93 };
  94
  95 static void edb7211_lcd_backlight_set_intensity(int intensity)
  96 {
  97         gpio_set_value(EDB7211_LCDBL, intensity);
  98 }
  99
 100 static struct generic_bl_info edb7211_lcd_backlight_pdata = {
 101         .name                   = "lcd-backlight.0",
 102         .default_intensity      = 0x01,
 103         .max_intensity          = 0x01,
 104         .set_bl_intensity       = edb7211_lcd_backlight_set_intensity,
 105 };
 106
 107 static struct gpio edb7211_gpios[] __initconst = {
 108         { EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW,     "LCD DC-DC" },
 109         { EDB7211_LCDEN,        GPIOF_OUT_INIT_LOW,     "LCD POWER" },
 110         { EDB7211_LCDBL,        GPIOF_OUT_INIT_LOW,     "LCD BACKLIGHT" },
 111 };
 112
 113 static struct map_desc edb7211_io_desc[] __initdata = {
 114         {       /* Memory-mapped extra keyboard row */
 115                 .virtual        = IO_ADDRESS(EP7211_PHYS_EXTKBD),
 116                 .pfn            = __phys_to_pfn(EP7211_PHYS_EXTKBD),
 117                 .length         = SZ_1M,
 118                 .type           = MT_DEVICE,
 119         },
 120 };
 121
 122 void __init edb7211_map_io(void)
 123 {
 124         clps711x_map_io();
 125         iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
 126 }
 127
 128 /* Reserve screen memory region at the start of main system memory. */
 129 static void __init edb7211_reserve(void)
 130 {
 131         memblock_reserve(PHYS_OFFSET, VIDEORAM_SIZE);
 132 }
 133
 134 static void __init
 135 fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
 136 {
 137         /*
 138          * Bank start addresses are not present in the information
 139          * passed in from the boot loader.  We could potentially
 140          * detect them, but instead we hard-code them.
 141          *
 142          * Banks sizes _are_ present in the param block, but we're
 143          * not using that information yet.
 144          */
 145         mi->bank[0].start = 0xc0000000;
 146         mi->bank[0].size = SZ_8M;
 147         mi->bank[1].start = 0xc1000000;
 148         mi->bank[1].size = SZ_8M;
 149         mi->nr_banks = 2;
 150 }
 151
 152 static void __init edb7211_init(void)
 153 {
 154         gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
 155
 156         platform_device_register(&edb7211_flash_pdev);
 157         platform_device_register_data(&platform_bus, "platform-lcd", 0,
 158                                       &edb7211_lcd_power_pdata,
 159                                       sizeof(edb7211_lcd_power_pdata));
 160         platform_device_register_data(&platform_bus, "generic-bl", 0,
 161                                       &edb7211_lcd_backlight_pdata,
 162                                       sizeof(edb7211_lcd_backlight_pdata));
 163         platform_device_register_simple("video-clps711x", 0, NULL, 0);
 164         platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
 165                                         ARRAY_SIZE(edb7211_cs8900_resource));
 166 }
 167
 168 MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
 169         /* Maintainer: Jon McClintock */
 170         .atag_offset    = VIDEORAM_SIZE + 0x100,
 171         .nr_irqs        = CLPS711X_NR_IRQS,
 172         .fixup          = fixup_edb7211,
 173         .reserve        = edb7211_reserve,
 174         .map_io         = edb7211_map_io,
 175         .init_irq       = clps711x_init_irq,
 176         .init_time      = clps711x_timer_init,
 177         .init_machine   = edb7211_init,
 178         .handle_irq     = clps711x_handle_irq,
 179         .restart        = clps711x_restart,
 180 MACHINE_END