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/*
* linux/arch/arm/mach-clps711x/p720t.c
*
* Copyright (C) 2000-2001 Deep Blue Solutions Ltd
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include <mach/hardware.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <asm/sizes.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/syspld.h>
#include "common.h"
/*
* Map the P720T system PLD. It occupies two address spaces:
* 0x10000000 and 0x10400000. We map both regions as one.
*/
static struct map_desc p720t_io_desc[] __initdata = {
{
.virtual = SYSPLD_VIRT_BASE,
.pfn = __phys_to_pfn(SYSPLD_PHYS_BASE),
.length = SZ_8M,
.type = MT_DEVICE,
},
};
static void __init
fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
{
/*
* Our bootloader doesn't setup any tags (yet).
*/
if (tag->hdr.tag != ATAG_CORE) {
tag->hdr.tag = ATAG_CORE;
tag->hdr.size = tag_size(tag_core);
tag->u.core.flags = 0;
tag->u.core.pagesize = PAGE_SIZE;
tag->u.core.rootdev = 0x0100;
tag = tag_next(tag);
tag->hdr.tag = ATAG_MEM;
tag->hdr.size = tag_size(tag_mem32);
tag->u.mem.size = 4096;
tag->u.mem.start = PHYS_OFFSET;
tag = tag_next(tag);
tag->hdr.tag = ATAG_NONE;
tag->hdr.size = 0;
}
}
static void __init p720t_map_io(void)
{
clps711x_map_io();
iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
}
static void __init p720t_init_early(void)
{
/*
* Power down as much as possible in case we don't
* have the drivers loaded.
*/
PLD_LCDEN = 0;
PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
PLD_KBD = 0;
PLD_IO = 0;
PLD_IRDA = 0;
PLD_CODEC = 0;
PLD_TCH = 0;
PLD_SPI = 0;
if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
PLD_COM2 = 0;
PLD_COM1 = 0;
}
}
/*
* LED controled by CPLD
*/
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
static void p720t_led_set(struct led_classdev *cdev,
enum led_brightness b)
{
u8 reg = clps_readb(PDDR);
if (b != LED_OFF)
reg |= 0x1;
else
reg &= ~0x1;
clps_writeb(reg, PDDR);
}
static enum led_brightness p720t_led_get(struct led_classdev *cdev)
{
u8 reg = clps_readb(PDDR);
return (reg & 0x1) ? LED_FULL : LED_OFF;
}
static int __init p720t_leds_init(void)
{
struct led_classdev *cdev;
int ret;
if (!machine_is_p720t())
return -ENODEV;
cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
if (!cdev)
return -ENOMEM;
cdev->name = "p720t:0";
cdev->brightness_set = p720t_led_set;
cdev->brightness_get = p720t_led_get;
cdev->default_trigger = "heartbeat";
ret = led_classdev_register(NULL, cdev);
if (ret < 0) {
kfree(cdev);
return ret;
}
return 0;
}
/*
* Since we may have triggers on any subsystem, defer registration
* until after subsystem_init.
*/
fs_initcall(p720t_leds_init);
#endif
MACHINE_START(P720T, "ARM-Prospector720T")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
.fixup = fixup_p720t,
.init_early = p720t_init_early,
.map_io = p720t_map_io,
.init_irq = clps711x_init_irq,
.timer = &clps711x_timer,
.restart = clps711x_restart,
MACHINE_END
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