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/platform_device.h>
  18 #include <linux/pwm.h>
  19 #include <linux/pwm_backlight.h>
  20 #include <linux/memblock.h>
  21
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/mtd/partitions.h>
  24
  25 #include <asm/setup.h>
  26 #include <asm/mach/map.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach-types.h>
  29
  30 #include <video/platform_lcd.h>
  31
  32 #include <mach/hardware.h>
  33
  34 #include "common.h"
  35 #include "devices.h"
  36
  37 #define VIDEORAM_SIZE           SZ_128K
  38
  39 #define EDB7211_LCD_DC_DC_EN    CLPS711X_GPIO(3, 1)
  40 #define EDB7211_LCDEN           CLPS711X_GPIO(3, 2)
  41 #define EDB7211_LCDBL           CLPS711X_GPIO(3, 3)
  42
  43 #define EDB7211_I2C_SDA         CLPS711X_GPIO(3, 4)
  44 #define EDB7211_I2C_SCL         CLPS711X_GPIO(3, 5)
  45
  46 #define EDB7211_FLASH0_BASE     (CS0_PHYS_BASE)
  47 #define EDB7211_FLASH1_BASE     (CS1_PHYS_BASE)
  48
  49 #define EDB7211_CS8900_BASE     (CS2_PHYS_BASE + 0x300)
  50 #define EDB7211_CS8900_IRQ      (IRQ_EINT3)
  51
  52 /* The extra 8 lines of the keyboard matrix */
  53 #define EDB7211_EXTKBD_BASE     (CS3_PHYS_BASE)
  54
  55 static struct i2c_gpio_platform_data edb7211_i2c_pdata __initdata = {
  56         .sda_pin        = EDB7211_I2C_SDA,
  57         .scl_pin        = EDB7211_I2C_SCL,
  58         .scl_is_output_only = 1,
  59 };
  60
  61 static struct resource edb7211_cs8900_resource[] __initdata = {
  62         DEFINE_RES_MEM(EDB7211_CS8900_BASE, SZ_1K),
  63         DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
  64 };
  65
  66 static struct mtd_partition edb7211_flash_partitions[] __initdata = {
  67         {
  68                 .name   = "Flash",
  69                 .offset = 0,
  70                 .size   = MTDPART_SIZ_FULL,
  71         },
  72 };
  73
  74 static struct physmap_flash_data edb7211_flash_pdata __initdata = {
  75         .width          = 4,
  76         .parts          = edb7211_flash_partitions,
  77         .nr_parts       = ARRAY_SIZE(edb7211_flash_partitions),
  78 };
  79
  80 static struct resource edb7211_flash_resources[] __initdata = {
  81         DEFINE_RES_MEM(EDB7211_FLASH0_BASE, SZ_8M),
  82         DEFINE_RES_MEM(EDB7211_FLASH1_BASE, SZ_8M),
  83 };
  84
  85 static struct platform_device edb7211_flash_pdev __initdata = {
  86         .name           = "physmap-flash",
  87         .id             = 0,
  88         .resource       = edb7211_flash_resources,
  89         .num_resources  = ARRAY_SIZE(edb7211_flash_resources),
  90         .dev    = {
  91                 .platform_data  = &edb7211_flash_pdata,
  92         },
  93 };
  94
  95 static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  96 {
  97         if (power) {
  98                 gpio_set_value(EDB7211_LCDEN, 1);
  99                 udelay(100);
 100                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
 101         } else {
 102                 gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
 103                 udelay(100);
 104                 gpio_set_value(EDB7211_LCDEN, 0);
 105         }
 106 }
 107
 108 static struct plat_lcd_data edb7211_lcd_power_pdata = {
 109         .set_power      = edb7211_lcd_power_set,
 110 };
 111
 112 static struct pwm_lookup edb7211_pwm_lookup[] = {
 113         PWM_LOOKUP("clps711x-pwm", 0, "pwm-backlight.0", NULL,
 114                    0, PWM_POLARITY_NORMAL),
 115 };
 116
 117 static struct platform_pwm_backlight_data pwm_bl_pdata = {
 118         .dft_brightness = 0x01,
 119         .max_brightness = 0x0f,
 120         .enable_gpio    = EDB7211_LCDBL,
 121 };
 122
 123 static struct resource clps711x_pwm_res =
 124         DEFINE_RES_MEM(CLPS711X_PHYS_BASE + PMPCON, SZ_4);
 125
 126 static struct gpio edb7211_gpios[] __initconst = {
 127         { EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW,     "LCD DC-DC" },
 128         { EDB7211_LCDEN,        GPIOF_OUT_INIT_LOW,     "LCD POWER" },
 129 };
 130
 131 /* Reserve screen memory region at the start of main system memory. */
 132 static void __init edb7211_reserve(void)
 133 {
 134         memblock_reserve(PHYS_OFFSET, VIDEORAM_SIZE);
 135 }
 136
 137 static void __init
 138 fixup_edb7211(struct tag *tags, char **cmdline)
 139 {
 140         /*
 141          * Bank start addresses are not present in the information
 142          * passed in from the boot loader.  We could potentially
 143          * detect them, but instead we hard-code them.
 144          *
 145          * Banks sizes _are_ present in the param block, but we're
 146          * not using that information yet.
 147          */
 148         memblock_add(0xc0000000, SZ_8M);
 149         memblock_add(0xc1000000, SZ_8M);
 150 }
 151
 152 static void __init edb7211_init_late(void)
 153 {
 154         gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
 155
 156         platform_device_register(&edb7211_flash_pdev);
 157
 158         platform_device_register_data(NULL, "platform-lcd", 0,
 159                                       &edb7211_lcd_power_pdata,
 160                                       sizeof(edb7211_lcd_power_pdata));
 161
 162         platform_device_register_simple("clps711x-pwm", PLATFORM_DEVID_NONE,
 163                                         &clps711x_pwm_res, 1);
 164         pwm_add_table(edb7211_pwm_lookup, ARRAY_SIZE(edb7211_pwm_lookup));
 165
 166         platform_device_register_data(&platform_bus, "pwm-backlight", 0,
 167                                       &pwm_bl_pdata, sizeof(pwm_bl_pdata));
 168
 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(NULL, "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_irq       = clps711x_init_irq,
 184         .init_time      = clps711x_timer_init,
 185         .init_machine   = clps711x_devices_init,
 186         .init_late      = edb7211_init_late,
 187         .restart        = clps711x_restart,
 188 MACHINE_END