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/i2c-gpio.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/backlight.h>
  18 #include <linux/platform_device.h>
  19
  20 #include <linux/mtd/physmap.h>
  21 #include <linux/mtd/partitions.h>
  22
  23 #include <asm/setup.h>
  24 #include <asm/mach/map.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach-types.h>
  27
  28 #include <video/platform_lcd.h>
  29
  30 #include <mach/hardware.h>
  31
  32 #include "common.h"
  33 #include "devices.h"
  34
  35 #define VIDEORAM_SIZE           SZ_128K
  36
  37 #define EDB7211_LCD_DC_DC_EN    CLPS711X_GPIO(3, 1)
  38 #define EDB7211_LCDEN           CLPS711X_GPIO(3, 2)
  39 #define EDB7211_LCDBL           CLPS711X_GPIO(3, 3)
  40
  41 #define EDB7211_I2C_SDA         CLPS711X_GPIO(3, 4)
  42 #define EDB7211_I2C_SCL         CLPS711X_GPIO(3, 5)
  43
  44 #define EDB7211_FLASH0_BASE     (CS0_PHYS_BASE)
  45 #define EDB7211_FLASH1_BASE     (CS1_PHYS_BASE)
  46
  47 #define EDB7211_CS8900_BASE     (CS2_PHYS_BASE + 0x300)
  48 #define EDB7211_CS8900_IRQ      (IRQ_EINT3)
  49
  50 /* The extra 8 lines of the keyboard matrix */
  51 #define EDB7211_EXTKBD_BASE     (CS3_PHYS_BASE)
  52
  53 static struct i2c_gpio_platform_data edb7211_i2c_pdata __initdata = {
  54         .sda_pin        = EDB7211_I2C_SDA,
  55         .scl_pin        = EDB7211_I2C_SCL,
  56         .scl_is_output_only = 1,
  57 };
  58
  59 static struct resource edb7211_cs8900_resource[] __initdata = {
  60         DEFINE_RES_MEM(EDB7211_CS8900_BASE, SZ_1K),
  61         DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
  62 };
  63
  64 static struct mtd_partition edb7211_flash_partitions[] __initdata = {
  65         {
  66                 .name   = "Flash",
  67                 .offset = 0,
  68                 .size   = MTDPART_SIZ_FULL,
  69         },
  70 };
  71
  72 static struct physmap_flash_data edb7211_flash_pdata __initdata = {
  73         .width          = 4,
  74         .parts          = edb7211_flash_partitions,
  75         .nr_parts       = ARRAY_SIZE(edb7211_flash_partitions),
  76 };
  77
  78 static struct resource edb7211_flash_resources[] __initdata = {
  79         DEFINE_RES_MEM(EDB7211_FLASH0_BASE, SZ_8M),
  80         DEFINE_RES_MEM(EDB7211_FLASH1_BASE, SZ_8M),
  81 };
  82
  83 static struct platform_device edb7211_flash_pdev __initdata = {
  84         .name           = "physmap-flash",
  85         .id             = 0,
  86         .resource       = edb7211_flash_resources,
  87         .num_resources  = ARRAY_SIZE(edb7211_flash_resources),
  88         .dev    = {
  89                 .platform_data  = &edb7211_flash_pdata,
  90         },
  91 };
  92
  93 static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  94 {
  95         if (power) {
  96                 gpio_set_value(EDB7211_LCDEN, 1);
  97                 udelay(100);
  98                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
  99         } else {
 100                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
 101                 udelay(100);
 102                 gpio_set_value(EDB7211_LCDEN, 0);
 103         }
 104 }
 105
 106 static struct plat_lcd_data edb7211_lcd_power_pdata = {
 107         .set_power      = edb7211_lcd_power_set,
 108 };
 109
 110 static void edb7211_lcd_backlight_set_intensity(int intensity)
 111 {
 112         gpio_set_value(EDB7211_LCDBL, !!intensity);
 113         clps_writel((clps_readl(PMPCON) & 0xf0ff) | (intensity << 8), PMPCON);
 114 }
 115
 116 static struct generic_bl_info edb7211_lcd_backlight_pdata = {
 117         .name                   = "lcd-backlight.0",
 118         .default_intensity      = 0x01,
 119         .max_intensity          = 0x0f,
 120         .set_bl_intensity       = edb7211_lcd_backlight_set_intensity,
 121 };
 122
 123 static struct gpio edb7211_gpios[] __initconst = {
 124         { EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW,     "LCD DC-DC" },
 125         { EDB7211_LCDEN,        GPIOF_OUT_INIT_LOW,     "LCD POWER" },
 126         { EDB7211_LCDBL,        GPIOF_OUT_INIT_LOW,     "LCD BACKLIGHT" },
 127 };
 128
 129 /* Reserve screen memory region at the start of main system memory. */
 130 static void __init edb7211_reserve(void)
 131 {
 132         memblock_reserve(PHYS_OFFSET, VIDEORAM_SIZE);
 133 }
 134
 135 static void __init
 136 fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
 137 {
 138         /*
 139          * Bank start addresses are not present in the information
 140          * passed in from the boot loader.  We could potentially
 141          * detect them, but instead we hard-code them.
 142          *
 143          * Banks sizes _are_ present in the param block, but we're
 144          * not using that information yet.
 145          */
 146         mi->bank[0].start = 0xc0000000;
 147         mi->bank[0].size = SZ_8M;
 148         mi->bank[1].start = 0xc1000000;
 149         mi->bank[1].size = SZ_8M;
 150         mi->nr_banks = 2;
 151 }
 152
 153 static void __init edb7211_init(void)
 154 {
 155         clps711x_devices_init();
 156 }
 157
 158 static void __init edb7211_init_late(void)
 159 {
 160         gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
 161
 162         platform_device_register(&edb7211_flash_pdev);
 163         platform_device_register_data(&platform_bus, "platform-lcd", 0,
 164                                       &edb7211_lcd_power_pdata,
 165                                       sizeof(edb7211_lcd_power_pdata));
 166         platform_device_register_data(&platform_bus, "generic-bl", 0,
 167                                       &edb7211_lcd_backlight_pdata,
 168                                       sizeof(edb7211_lcd_backlight_pdata));
 169         platform_device_register_simple("video-clps711x", 0, NULL, 0);
 170         platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
 171                                         ARRAY_SIZE(edb7211_cs8900_resource));
 172         platform_device_register_data(&platform_bus, "i2c-gpio", 0,
 173                                       &edb7211_i2c_pdata,
 174                                       sizeof(edb7211_i2c_pdata));
 175 }
 176
 177 MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
 178         /* Maintainer: Jon McClintock */
 179         .atag_offset    = VIDEORAM_SIZE + 0x100,
 180         .fixup          = fixup_edb7211,
 181         .reserve        = edb7211_reserve,
 182         .map_io         = clps711x_map_io,
 183         .init_early     = clps711x_init_early,
 184         .init_irq       = clps711x_init_irq,
 185         .init_time      = clps711x_timer_init,
 186         .init_machine   = edb7211_init,
 187         .init_late      = edb7211_init_late,
 188         .restart        = clps711x_restart,
 189 MACHINE_END