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linux/drivers/leds/leds-fsg.c
Axel Lin 892a8843fb leds: convert led platform drivers to module_platform_driver
Factor out some boilerplate code for platform driver registration into
module_platform_driver.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Haojian Zhuang <hzhuang1@marvell.com>		[led-88pm860x.c]
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-10 16:30:48 -08:00

232 lines
5.1 KiB
C

/*
* LED Driver for the Freecom FSG-3
*
* Copyright (c) 2008 Rod Whitby <rod@whitby.id.au>
*
* Author: Rod Whitby <rod@whitby.id.au>
*
* Based on leds-spitz.c
* Copyright 2005-2006 Openedhand Ltd.
* Author: Richard Purdie <rpurdie@openedhand.com>
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <mach/hardware.h>
#include <asm/io.h>
#define FSG_LED_WLAN_BIT 0
#define FSG_LED_WAN_BIT 1
#define FSG_LED_SATA_BIT 2
#define FSG_LED_USB_BIT 4
#define FSG_LED_RING_BIT 5
#define FSG_LED_SYNC_BIT 7
static short __iomem *latch_address;
static unsigned short latch_value;
static void fsg_led_wlan_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value) {
latch_value &= ~(1 << FSG_LED_WLAN_BIT);
*latch_address = latch_value;
} else {
latch_value |= (1 << FSG_LED_WLAN_BIT);
*latch_address = latch_value;
}
}
static void fsg_led_wan_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value) {
latch_value &= ~(1 << FSG_LED_WAN_BIT);
*latch_address = latch_value;
} else {
latch_value |= (1 << FSG_LED_WAN_BIT);
*latch_address = latch_value;
}
}
static void fsg_led_sata_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value) {
latch_value &= ~(1 << FSG_LED_SATA_BIT);
*latch_address = latch_value;
} else {
latch_value |= (1 << FSG_LED_SATA_BIT);
*latch_address = latch_value;
}
}
static void fsg_led_usb_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value) {
latch_value &= ~(1 << FSG_LED_USB_BIT);
*latch_address = latch_value;
} else {
latch_value |= (1 << FSG_LED_USB_BIT);
*latch_address = latch_value;
}
}
static void fsg_led_sync_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value) {
latch_value &= ~(1 << FSG_LED_SYNC_BIT);
*latch_address = latch_value;
} else {
latch_value |= (1 << FSG_LED_SYNC_BIT);
*latch_address = latch_value;
}
}
static void fsg_led_ring_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value) {
latch_value &= ~(1 << FSG_LED_RING_BIT);
*latch_address = latch_value;
} else {
latch_value |= (1 << FSG_LED_RING_BIT);
*latch_address = latch_value;
}
}
static struct led_classdev fsg_wlan_led = {
.name = "fsg:blue:wlan",
.brightness_set = fsg_led_wlan_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static struct led_classdev fsg_wan_led = {
.name = "fsg:blue:wan",
.brightness_set = fsg_led_wan_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static struct led_classdev fsg_sata_led = {
.name = "fsg:blue:sata",
.brightness_set = fsg_led_sata_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static struct led_classdev fsg_usb_led = {
.name = "fsg:blue:usb",
.brightness_set = fsg_led_usb_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static struct led_classdev fsg_sync_led = {
.name = "fsg:blue:sync",
.brightness_set = fsg_led_sync_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static struct led_classdev fsg_ring_led = {
.name = "fsg:blue:ring",
.brightness_set = fsg_led_ring_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static int fsg_led_probe(struct platform_device *pdev)
{
int ret;
/* Map the LED chip select address space */
latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);
if (!latch_address) {
ret = -ENOMEM;
goto failremap;
}
latch_value = 0xffff;
*latch_address = latch_value;
ret = led_classdev_register(&pdev->dev, &fsg_wlan_led);
if (ret < 0)
goto failwlan;
ret = led_classdev_register(&pdev->dev, &fsg_wan_led);
if (ret < 0)
goto failwan;
ret = led_classdev_register(&pdev->dev, &fsg_sata_led);
if (ret < 0)
goto failsata;
ret = led_classdev_register(&pdev->dev, &fsg_usb_led);
if (ret < 0)
goto failusb;
ret = led_classdev_register(&pdev->dev, &fsg_sync_led);
if (ret < 0)
goto failsync;
ret = led_classdev_register(&pdev->dev, &fsg_ring_led);
if (ret < 0)
goto failring;
return ret;
failring:
led_classdev_unregister(&fsg_sync_led);
failsync:
led_classdev_unregister(&fsg_usb_led);
failusb:
led_classdev_unregister(&fsg_sata_led);
failsata:
led_classdev_unregister(&fsg_wan_led);
failwan:
led_classdev_unregister(&fsg_wlan_led);
failwlan:
iounmap(latch_address);
failremap:
return ret;
}
static int fsg_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&fsg_wlan_led);
led_classdev_unregister(&fsg_wan_led);
led_classdev_unregister(&fsg_sata_led);
led_classdev_unregister(&fsg_usb_led);
led_classdev_unregister(&fsg_sync_led);
led_classdev_unregister(&fsg_ring_led);
iounmap(latch_address);
return 0;
}
static struct platform_driver fsg_led_driver = {
.probe = fsg_led_probe,
.remove = fsg_led_remove,
.driver = {
.name = "fsg-led",
},
};
module_platform_driver(fsg_led_driver);
MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
MODULE_LICENSE("GPL");