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