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ARM: mach-footbridge: retire custom LED code

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Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
This commit is contained in:
Bryan Wu 2012-03-14 02:05:24 +08:00
parent 3dd6b990d1
commit cf6856d693
5 changed files with 179 additions and 294 deletions
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4
arch/arm/mach-footbridge/Makefile
View File

@ -14,15 +14,11 @@ pci-$(CONFIG_ARCH_EBSA285_HOST) += ebsa285-pci.o
pci-$(CONFIG_ARCH_NETWINDER) += netwinder-pci.o
pci-$(CONFIG_ARCH_PERSONAL_SERVER) += personal-pci.o
leds-$(CONFIG_ARCH_EBSA285) += ebsa285-leds.o
leds-$(CONFIG_ARCH_NETWINDER) += netwinder-leds.o
obj-$(CONFIG_ARCH_CATS) += cats-hw.o isa-timer.o
obj-$(CONFIG_ARCH_EBSA285) += ebsa285.o dc21285-timer.o
obj-$(CONFIG_ARCH_NETWINDER) += netwinder-hw.o isa-timer.o
obj-$(CONFIG_ARCH_PERSONAL_SERVER) += personal.o dc21285-timer.o
obj-$(CONFIG_PCI) +=$(pci-y)
obj-$(CONFIG_LEDS) +=$(leds-y)
obj-$(CONFIG_ISA) += isa.o isa-rtc.o

138
arch/arm/mach-footbridge/ebsa285-leds.c
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@ -1,138 +0,0 @@
/*
* linux/arch/arm/mach-footbridge/ebsa285-leds.c
*
* Copyright (C) 1998-1999 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* EBSA-285 control routines.
*
* The EBSA-285 uses the leds as follows:
* - Green - toggles state every 50 timer interrupts
* - Amber - On if system is not idle
* - Red - currently unused
*
* Changelog:
* 02-05-1999 RMK Various cleanups
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <mach/hardware.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#define LED_STATE_ENABLED 1
#define LED_STATE_CLAIMED 2
static char led_state;
static char hw_led_state;
static DEFINE_SPINLOCK(leds_lock);
static void ebsa285_leds_event(led_event_t evt)
{
unsigned long flags;
spin_lock_irqsave(&leds_lock, flags);
switch (evt) {
case led_start:
hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN;
#ifndef CONFIG_LEDS_CPU
hw_led_state |= XBUS_LED_AMBER;
#endif
led_state |= LED_STATE_ENABLED;
break;
case led_stop:
led_state &= ~LED_STATE_ENABLED;
break;
case led_claim:
led_state |= LED_STATE_CLAIMED;
hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER;
break;
case led_release:
led_state &= ~LED_STATE_CLAIMED;
hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER;
break;
#ifdef CONFIG_LEDS_TIMER
case led_timer:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state ^= XBUS_LED_GREEN;
break;
#endif
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state |= XBUS_LED_AMBER;
break;
case led_idle_end:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state &= ~XBUS_LED_AMBER;
break;
#endif
case led_halted:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state &= ~XBUS_LED_RED;
break;
case led_green_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~XBUS_LED_GREEN;
break;
case led_green_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= XBUS_LED_GREEN;
break;
case led_amber_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~XBUS_LED_AMBER;
break;
case led_amber_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= XBUS_LED_AMBER;
break;
case led_red_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~XBUS_LED_RED;
break;
case led_red_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= XBUS_LED_RED;
break;
default:
break;
}
if (led_state & LED_STATE_ENABLED)
*XBUS_LEDS = hw_led_state;
spin_unlock_irqrestore(&leds_lock, flags);
}
static int __init leds_init(void)
{
if (machine_is_ebsa285())
leds_event = ebsa285_leds_event;
leds_event(led_start);
return 0;
}
__initcall(leds_init);

81
arch/arm/mach-footbridge/ebsa285.c
View File

@ -5,6 +5,8 @@
*/
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include <asm/hardware/dec21285.h>
#include <asm/mach-types.h>
@ -13,6 +15,85 @@
#include "common.h"
/* LEDs */
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct ebsa285_led {
struct led_classdev cdev;
u8 mask;
};
/*
* The triggers lines up below will only be used if the
* LED triggers are compiled in.
*/
static const struct {
const char *name;
const char *trigger;
} ebsa285_leds[] = {
{ "ebsa285:amber", "heartbeat", },
{ "ebsa285:green", "cpu0", },
{ "ebsa285:red",},
};
static void ebsa285_led_set(struct led_classdev *cdev,
enum led_brightness b)
{
struct ebsa285_led *led = container_of(cdev,
struct ebsa285_led, cdev);
if (b != LED_OFF)
*XBUS_LEDS |= led->mask;
else
*XBUS_LEDS &= ~led->mask;
}
static enum led_brightness ebsa285_led_get(struct led_classdev *cdev)
{
struct ebsa285_led *led = container_of(cdev,
struct ebsa285_led, cdev);
return (*XBUS_LEDS & led->mask) ? LED_FULL : LED_OFF;
}
static int __init ebsa285_leds_init(void)
{
int i;
if (machine_is_ebsa285())
return -ENODEV;
/* 3 LEDS All ON */
*XBUS_LEDS |= XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED;
for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) {
struct ebsa285_led *led;
led = kzalloc(sizeof(*led), GFP_KERNEL);
if (!led)
break;
led->cdev.name = ebsa285_leds[i].name;
led->cdev.brightness_set = ebsa285_led_set;
led->cdev.brightness_get = ebsa285_led_get;
led->cdev.default_trigger = ebsa285_leds[i].trigger;
led->mask = BIT(i);
if (led_classdev_register(NULL, &led->cdev) < 0) {
kfree(led);
break;
}
}
return 0;
}
/*
* Since we may have triggers on any subsystem, defer registration
* until after subsystem_init.
*/
fs_initcall(ebsa285_leds_init);
#endif
MACHINE_START(EBSA285, "EBSA285")
/* Maintainer: Russell King */
.atag_offset = 0x100,

112
arch/arm/mach-footbridge/netwinder-hw.c
View File

@ -12,9 +12,10 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include <asm/hardware/dec21285.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/system_misc.h>
@ -27,13 +28,6 @@
#define GP1_IO_BASE 0x338
#define GP2_IO_BASE 0x33a
#ifdef CONFIG_LEDS
#define DEFAULT_LEDS 0
#else
#define DEFAULT_LEDS GPIO_GREEN_LED
#endif
/*
* Winbond WB83977F accessibility stuff
*/
@ -611,15 +605,9 @@ static void __init rwa010_init(void)
static int __init nw_hw_init(void)
{
if (machine_is_netwinder()) {
unsigned long flags;
wb977_init();
cpld_init();
rwa010_init();
raw_spin_lock_irqsave(&nw_gpio_lock, flags);
nw_gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS);
raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
}
return 0;
}
@ -672,6 +660,102 @@ static void netwinder_restart(char mode, const char *cmd)
}
}
/* LEDs */
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct netwinder_led {
struct led_classdev cdev;
u8 mask;
};
/*
* The triggers lines up below will only be used if the
* LED triggers are compiled in.
*/
static const struct {
const char *name;
const char *trigger;
} netwinder_leds[] = {
{ "netwinder:green", "heartbeat", },
{ "netwinder:red", "cpu0", },
};
/*
* The LED control in Netwinder is reversed:
* - setting bit means turn off LED
* - clearing bit means turn on LED
*/
static void netwinder_led_set(struct led_classdev *cdev,
enum led_brightness b)
{
struct netwinder_led *led = container_of(cdev,
struct netwinder_led, cdev);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&nw_gpio_lock, flags);
reg = nw_gpio_read();
if (b != LED_OFF)
reg &= ~led->mask;
else
reg |= led->mask;
nw_gpio_modify_op(led->mask, reg);
spin_unlock_irqrestore(&nw_gpio_lock, flags);
}
static enum led_brightness netwinder_led_get(struct led_classdev *cdev)
{
struct netwinder_led *led = container_of(cdev,
struct netwinder_led, cdev);
unsigned long flags;
u32 reg;
spin_lock_irqsave(&nw_gpio_lock, flags);
reg = nw_gpio_read();
spin_unlock_irqrestore(&nw_gpio_lock, flags);
return (reg & led->mask) ? LED_OFF : LED_FULL;
}
static int __init netwinder_leds_init(void)
{
int i;
if (!machine_is_netwinder())
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(netwinder_leds); i++) {
struct netwinder_led *led;
led = kzalloc(sizeof(*led), GFP_KERNEL);
if (!led)
break;
led->cdev.name = netwinder_leds[i].name;
led->cdev.brightness_set = netwinder_led_set;
led->cdev.brightness_get = netwinder_led_get;
led->cdev.default_trigger = netwinder_leds[i].trigger;
if (i == 0)
led->mask = GPIO_GREEN_LED;
else
led->mask = GPIO_RED_LED;
if (led_classdev_register(NULL, &led->cdev) < 0) {
kfree(led);
break;
}
}
return 0;
}
/*
* Since we may have triggers on any subsystem, defer registration
* until after subsystem_init.
*/
fs_initcall(netwinder_leds_init);
#endif
MACHINE_START(NETWINDER, "Rebel-NetWinder")
/* Maintainer: Russell King/Rebel.com */
.atag_offset = 0x100,

138
arch/arm/mach-footbridge/netwinder-leds.c
View File

@ -1,138 +0,0 @@
/*
* linux/arch/arm/mach-footbridge/netwinder-leds.c
*
* Copyright (C) 1998-1999 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* NetWinder LED control routines.
*
* The Netwinder uses the leds as follows:
* - Green - toggles state every 50 timer interrupts
* - Red - On if the system is not idle
*
* Changelog:
* 02-05-1999 RMK Various cleanups
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <mach/hardware.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#define LED_STATE_ENABLED 1
#define LED_STATE_CLAIMED 2
static char led_state;
static char hw_led_state;
static DEFINE_RAW_SPINLOCK(leds_lock);
static void netwinder_leds_event(led_event_t evt)
{
unsigned long flags;
raw_spin_lock_irqsave(&leds_lock, flags);
switch (evt) {
case led_start:
led_state |= LED_STATE_ENABLED;
hw_led_state = GPIO_GREEN_LED;
break;
case led_stop:
led_state &= ~LED_STATE_ENABLED;
break;
case led_claim:
led_state |= LED_STATE_CLAIMED;
hw_led_state = 0;
break;
case led_release:
led_state &= ~LED_STATE_CLAIMED;
hw_led_state = 0;
break;
#ifdef CONFIG_LEDS_TIMER
case led_timer:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state ^= GPIO_GREEN_LED;
break;
#endif
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state &= ~GPIO_RED_LED;
break;
case led_idle_end:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state |= GPIO_RED_LED;
break;
#endif
case led_halted:
if (!(led_state & LED_STATE_CLAIMED))
hw_led_state |= GPIO_RED_LED;
break;
case led_green_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= GPIO_GREEN_LED;
break;
case led_green_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~GPIO_GREEN_LED;
break;
case led_amber_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= GPIO_GREEN_LED | GPIO_RED_LED;
break;
case led_amber_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~(GPIO_GREEN_LED | GPIO_RED_LED);
break;
case led_red_on:
if (led_state & LED_STATE_CLAIMED)
hw_led_state |= GPIO_RED_LED;
break;
case led_red_off:
if (led_state & LED_STATE_CLAIMED)
hw_led_state &= ~GPIO_RED_LED;
break;
default:
break;
}
raw_spin_unlock_irqrestore(&leds_lock, flags);
if (led_state & LED_STATE_ENABLED) {
raw_spin_lock_irqsave(&nw_gpio_lock, flags);
nw_gpio_modify_op(GPIO_RED_LED | GPIO_GREEN_LED, hw_led_state);
raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
}
}
static int __init leds_init(void)
{
if (machine_is_netwinder())
leds_event = netwinder_leds_event;
leds_event(led_start);
return 0;
}
__initcall(leds_init);