edb7211.c
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/*
* Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/memblock.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <asm/setup.h>
#include <asm/mach/map.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <video/platform_lcd.h>
#include <mach/hardware.h>
#include "common.h"
#define VIDEORAM_SIZE SZ_128K
#define EDB7211_LCD_DC_DC_EN CLPS711X_GPIO(3, 1)
#define EDB7211_LCDEN CLPS711X_GPIO(3, 2)
#define EDB7211_LCDBL CLPS711X_GPIO(3, 3)
#define EDB7211_FLASH0_BASE (CS0_PHYS_BASE)
#define EDB7211_FLASH1_BASE (CS1_PHYS_BASE)
#define EDB7211_CS8900_BASE (CS2_PHYS_BASE + 0x300)
#define EDB7211_CS8900_IRQ (IRQ_EINT3)
static struct resource edb7211_cs8900_resource[] __initdata = {
DEFINE_RES_MEM(EDB7211_CS8900_BASE, SZ_1K),
DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
};
static struct mtd_partition edb7211_flash_partitions[] __initdata = {
{
.name = "Flash",
.offset = 0,
.size = MTDPART_SIZ_FULL,
},
};
static struct physmap_flash_data edb7211_flash_pdata __initdata = {
.width = 4,
.parts = edb7211_flash_partitions,
.nr_parts = ARRAY_SIZE(edb7211_flash_partitions),
};
static struct resource edb7211_flash_resources[] __initdata = {
DEFINE_RES_MEM(EDB7211_FLASH0_BASE, SZ_8M),
DEFINE_RES_MEM(EDB7211_FLASH1_BASE, SZ_8M),
};
static struct platform_device edb7211_flash_pdev __initdata = {
.name = "physmap-flash",
.id = 0,
.resource = edb7211_flash_resources,
.num_resources = ARRAY_SIZE(edb7211_flash_resources),
.dev = {
.platform_data = &edb7211_flash_pdata,
},
};
static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
{
if (power) {
gpio_set_value(EDB7211_LCDEN, 1);
udelay(100);
gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
} else {
gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
udelay(100);
gpio_set_value(EDB7211_LCDEN, 0);
}
}
static struct plat_lcd_data edb7211_lcd_power_pdata = {
.set_power = edb7211_lcd_power_set,
};
static void edb7211_lcd_backlight_set_intensity(int intensity)
{
gpio_set_value(EDB7211_LCDBL, intensity);
}
static struct generic_bl_info edb7211_lcd_backlight_pdata = {
.name = "lcd-backlight.0",
.default_intensity = 0x01,
.max_intensity = 0x01,
.set_bl_intensity = edb7211_lcd_backlight_set_intensity,
};
static struct gpio edb7211_gpios[] __initconst = {
{ EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW, "LCD DC-DC" },
{ EDB7211_LCDEN, GPIOF_OUT_INIT_LOW, "LCD POWER" },
{ EDB7211_LCDBL, GPIOF_OUT_INIT_LOW, "LCD BACKLIGHT" },
};
static struct map_desc edb7211_io_desc[] __initdata = {
{ /* Memory-mapped extra keyboard row */
.virtual = IO_ADDRESS(EP7211_PHYS_EXTKBD),
.pfn = __phys_to_pfn(EP7211_PHYS_EXTKBD),
.length = SZ_1M,
.type = MT_DEVICE,
},
};
void __init edb7211_map_io(void)
{
clps711x_map_io();
iotable_init(edb7211_io_desc, ARRAY_SIZE(edb7211_io_desc));
}
/* Reserve screen memory region at the start of main system memory. */
static void __init edb7211_reserve(void)
{
memblock_reserve(PHYS_OFFSET, VIDEORAM_SIZE);
}
static void __init
fixup_edb7211(struct tag *tags, char **cmdline, struct meminfo *mi)
{
/*
* Bank start addresses are not present in the information
* passed in from the boot loader. We could potentially
* detect them, but instead we hard-code them.
*
* Banks sizes _are_ present in the param block, but we're
* not using that information yet.
*/
mi->bank[0].start = 0xc0000000;
mi->bank[0].size = SZ_8M;
mi->bank[1].start = 0xc1000000;
mi->bank[1].size = SZ_8M;
mi->nr_banks = 2;
}
static void __init edb7211_init(void)
{
gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
platform_device_register(&edb7211_flash_pdev);
platform_device_register_data(&platform_bus, "platform-lcd", 0,
&edb7211_lcd_power_pdata,
sizeof(edb7211_lcd_power_pdata));
platform_device_register_data(&platform_bus, "generic-bl", 0,
&edb7211_lcd_backlight_pdata,
sizeof(edb7211_lcd_backlight_pdata));
platform_device_register_simple("video-clps711x", 0, NULL, 0);
platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
ARRAY_SIZE(edb7211_cs8900_resource));
}
MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
/* Maintainer: Jon McClintock */
.atag_offset = VIDEORAM_SIZE + 0x100,
.nr_irqs = CLPS711X_NR_IRQS,
.fixup = fixup_edb7211,
.reserve = edb7211_reserve,
.map_io = edb7211_map_io,
.init_irq = clps711x_init_irq,
.timer = &clps711x_timer,
.init_machine = edb7211_init,
.handle_irq = clps711x_handle_irq,
.restart = clps711x_restart,
MACHINE_END