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[MIPS] Cobalt: Add Cobalt Raq LED platform register and power off trigger 

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Yoichi Yuasa 2007-10-01 19:45:05 +09:00 committed by Ralf Baechle
parent f4fae8267c
commit e86169fffe
3 changed files with 71 additions and 9 deletions
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2
arch/mips/cobalt/Makefile
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@ -2,7 +2,7 @@
# Makefile for the Cobalt micro systems family specific parts of the kernel
#
obj-y := buttons.o irq.o reset.o rtc.o serial.o setup.o
obj-y := buttons.o irq.o led.o reset.o rtc.o serial.o setup.o
obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_EARLY_PRINTK) += console.o

56
arch/mips/cobalt/led.c 100644
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@ -0,0 +1,56 @@
/*
* Registration of Cobalt LED platform device.
*
* Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
static struct resource cobalt_led_resource __initdata = {
.start = 0x1c000000,
.end = 0x1c000000,
.flags = IORESOURCE_MEM,
};
static __init int cobalt_led_add(void)
{
struct platform_device *pdev;
int retval;
pdev = platform_device_alloc("cobalt-raq-leds", -1);
if (!pdev)
return -ENOMEM;
retval = platform_device_add_resources(pdev, &cobalt_led_resource, 1);
if (retval)
goto err_free_device;
retval = platform_device_add(pdev);
if (retval)
goto err_free_device;
return 0;
err_free_device:
platform_device_put(pdev);
return retval;
}
device_initcall(cobalt_led_add);

22
arch/mips/cobalt/reset.c
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@ -8,31 +8,37 @@
* Copyright (C) 1995, 1996, 1997 by Ralf Baechle
* Copyright (C) 2001 by Liam Davies (ldavies@agile.tv)
*/
#include <linux/init.h>
#include <linux/jiffies.h>
#include <asm/io.h>
#include <asm/reboot.h>
#include <linux/leds.h>
#include <cobalt.h>
DEFINE_LED_TRIGGER(power_off_led_trigger);
static int __init ledtrig_power_off_init(void)
{
led_trigger_register_simple("power-off", &power_off_led_trigger);
return 0;
}
device_initcall(ledtrig_power_off_init);
void cobalt_machine_halt(void)
{
int state, last, diff;
unsigned long mark;
/*
* turn off bar on Qube, flash power off LED on RaQ (0.5Hz)
* turn on power off LED on RaQ
*
* restart if ENTER and SELECT are pressed
*/
last = COBALT_KEY_PORT;
led_trigger_event(power_off_led_trigger, LED_FULL);
for (state = 0;;) {
state ^= COBALT_LED_POWER_OFF;
COBALT_LED_PORT = state;
diff = COBALT_KEY_PORT ^ last;
last ^= diff;