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 #include "devices.h"
  33
  34 #define VIDEORAM_SIZE           SZ_128K
  35
  36 #define EDB7211_LCD_DC_DC_EN    CLPS711X_GPIO(3, 1)
  37 #define EDB7211_LCDEN           CLPS711X_GPIO(3, 2)
  38 #define EDB7211_LCDBL           CLPS711X_GPIO(3, 3)
  39
  40 #define EDB7211_FLASH0_BASE     (CS0_PHYS_BASE)
  41 #define EDB7211_FLASH1_BASE     (CS1_PHYS_BASE)
  42
  43 #define EDB7211_CS8900_BASE     (CS2_PHYS_BASE + 0x300)
  44 #define EDB7211_CS8900_IRQ      (IRQ_EINT3)
  45
  46 /* The extra 8 lines of the keyboard matrix */
  47 #define EDB7211_EXTKBD_BASE     (CS3_PHYS_BASE)
  48
  49 static struct resource edb7211_cs8900_resource[] __initdata = {
  50         DEFINE_RES_MEM(EDB7211_CS8900_BASE, SZ_1K),
  51         DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
  52 };
  53
  54 static struct mtd_partition edb7211_flash_partitions[] __initdata = {
  55         {
  56                 .name   = "Flash",
  57                 .offset = 0,
  58                 .size   = MTDPART_SIZ_FULL,
  59         },
  60 };
  61
  62 static struct physmap_flash_data edb7211_flash_pdata __initdata = {
  63         .width          = 4,
  64         .parts          = edb7211_flash_partitions,
  65         .nr_parts       = ARRAY_SIZE(edb7211_flash_partitions),
  66 };
  67
  68 static struct resource edb7211_flash_resources[] __initdata = {
  69         DEFINE_RES_MEM(EDB7211_FLASH0_BASE, SZ_8M),
  70         DEFINE_RES_MEM(EDB7211_FLASH1_BASE, SZ_8M),
  71 };
  72
  73 static struct platform_device edb7211_flash_pdev __initdata = {
  74         .name           = "physmap-flash",
  75         .id             = 0,
  76         .resource       = edb7211_flash_resources,
  77         .num_resources  = ARRAY_SIZE(edb7211_flash_resources),
  78         .dev    = {
  79                 .platform_data  = &edb7211_flash_pdata,
  80         },
  81 };
  82
  83 static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  84 {
  85         if (power) {
  86                 gpio_set_value(EDB7211_LCDEN, 1);
  87                 udelay(100);
  88                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
  89         } else {
  90                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
  91                 udelay(100);
  92                 gpio_set_value(EDB7211_LCDEN, 0);
  93         }
  94 }
  95
  96 static struct plat_lcd_data edb7211_lcd_power_pdata = {
  97         .set_power      = edb7211_lcd_power_set,
  98 };
  99
 100 static void edb7211_lcd_backlight_set_intensity(int intensity)
 101 {
 102         gpio_set_value(EDB7211_LCDBL, intensity);
 103 }
 104
 105 static struct generic_bl_info edb7211_lcd_backlight_pdata = {
 106         .name                   = "lcd-backlight.0",
 107         .default_intensity      = 0x01,
 108         .max_intensity          = 0x01,
 109         .set_bl_intensity       = edb7211_lcd_backlight_set_intensity,
 110 };
 111
 112 static struct gpio edb7211_gpios[] __initconst = {
 113         { EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW,     "LCD DC-DC" },
 114         { EDB7211_LCDEN,        GPIOF_OUT_INIT_LOW,     "LCD POWER" },
 115         { EDB7211_LCDBL,        GPIOF_OUT_INIT_LOW,     "LCD BACKLIGHT" },
 116 };
 117
 118 static struct map_desc edb7211_io_desc[] __initdata = {
 119         {       /* Memory-mapped extra keyboard row */
 120                 .virtual        = IO_ADDRESS(EDB7211_EXTKBD_BASE),
 121                 .pfn            = __phys_to_pfn(EDB7211_EXTKBD_BASE),
 122                 .length         = SZ_1M,
 123                 .type           = MT_DEVICE,
 124         },
 125 };
 126
 127 void __init edb7211_map_io(void)
 128 {
 129         clps711x_map_io();
 130         iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
 131 }
 132
 133 /* Reserve screen memory region at the start of main system memory. */
 134 static void __init edb7211_reserve(void)
 135 {
 136         memblock_reserve(PHYS_OFFSET, VIDEORAM_SIZE);
 137 }
 138
 139 static void __init
 140 fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
 141 {
 142         /*
 143          * Bank start addresses are not present in the information
 144          * passed in from the boot loader.  We could potentially
 145          * detect them, but instead we hard-code them.
 146          *
 147          * Banks sizes _are_ present in the param block, but we're
 148          * not using that information yet.
 149          */
 150         mi->bank[0].start = 0xc0000000;
 151         mi->bank[0].size = SZ_8M;
 152         mi->bank[1].start = 0xc1000000;
 153         mi->bank[1].size = SZ_8M;
 154         mi->nr_banks = 2;
 155 }
 156
 157 static void __init edb7211_init(void)
 158 {
 159         clps711x_devices_init();
 160 }
 161
 162 static void __init edb7211_init_late(void)
 163 {
 164         gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
 165
 166         platform_device_register(&edb7211_flash_pdev);
 167         platform_device_register_data(&platform_bus, "platform-lcd", 0,
 168                                       &edb7211_lcd_power_pdata,
 169                                       sizeof(edb7211_lcd_power_pdata));
 170         platform_device_register_data(&platform_bus, "generic-bl", 0,
 171                                       &edb7211_lcd_backlight_pdata,
 172                                       sizeof(edb7211_lcd_backlight_pdata));
 173         platform_device_register_simple("video-clps711x", 0, NULL, 0);
 174         platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
 175                                         ARRAY_SIZE(edb7211_cs8900_resource));
 176 }
 177
 178 MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
 179         /* Maintainer: Jon McClintock */
 180         .atag_offset    = VIDEORAM_SIZE + 0x100,
 181         .nr_irqs        = CLPS711X_NR_IRQS,
 182         .fixup          = fixup_edb7211,
 183         .reserve        = edb7211_reserve,
 184         .map_io         = edb7211_map_io,
 185         .init_early     = clps711x_init_early,
 186         .init_irq       = clps711x_init_irq,
 187         .init_time      = clps711x_timer_init,
 188         .init_machine   = edb7211_init,
 189         .init_late      = edb7211_init_late,
 190         .handle_irq     = clps711x_handle_irq,
 191         .restart        = clps711x_restart,
 192 MACHINE_END