[mirror_ubuntu-bionic-kernel.git] / drivers / leds / leds-fsg.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");
Commit	Line	Data
3b2e46f8 RW	1	/*
	2	* LED Driver for the Freecom FSG-3
	3	*
	4	* Copyright (c) 2008 Rod Whitby <rod@whitby.id.au>
	5	*
	6	* Author: Rod Whitby <rod@whitby.id.au>
	7	*
	8	* Based on leds-spitz.c
	9	* Copyright 2005-2006 Openedhand Ltd.
	10	* Author: Richard Purdie <rpurdie@openedhand.com>
	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License version 2 as
	14	* published by the Free Software Foundation.
	15	*
	16	*/
	17
	18	#include <linux/kernel.h>
	19	#include <linux/init.h>
	20	#include <linux/platform_device.h>
	21	#include <linux/leds.h>
54f4dedb	22	#include <linux/module.h>
a09e64fb	23	#include <mach/hardware.h>
3b2e46f8 RW	24	#include <asm/io.h>
3b2e46f8 RW	25
914e7bc2 KH	26	#define FSG_LED_WLAN_BIT 0
	27	#define FSG_LED_WAN_BIT 1
	28	#define FSG_LED_SATA_BIT 2
	29	#define FSG_LED_USB_BIT 4
	30	#define FSG_LED_RING_BIT 5
	31	#define FSG_LED_SYNC_BIT 7
	32
3b2e46f8 RW	33	static short __iomem *latch_address;
	34	static unsigned short latch_value;
	35
	36
	37	static void fsg_led_wlan_set(struct led_classdev *led_cdev,
	38	enum led_brightness value)
	39	{
	40	if (value) {
	41	latch_value &= ~(1 << FSG_LED_WLAN_BIT);
	42	*latch_address = latch_value;
	43	} else {
	44	latch_value \|= (1 << FSG_LED_WLAN_BIT);
	45	*latch_address = latch_value;
	46	}
	47	}
	48
	49	static void fsg_led_wan_set(struct led_classdev *led_cdev,
	50	enum led_brightness value)
	51	{
	52	if (value) {
	53	latch_value &= ~(1 << FSG_LED_WAN_BIT);
	54	*latch_address = latch_value;
	55	} else {
	56	latch_value \|= (1 << FSG_LED_WAN_BIT);
	57	*latch_address = latch_value;
	58	}
	59	}
	60
	61	static void fsg_led_sata_set(struct led_classdev *led_cdev,
	62	enum led_brightness value)
	63	{
	64	if (value) {
	65	latch_value &= ~(1 << FSG_LED_SATA_BIT);
	66	*latch_address = latch_value;
	67	} else {
	68	latch_value \|= (1 << FSG_LED_SATA_BIT);
	69	*latch_address = latch_value;
	70	}
	71	}
	72
	73	static void fsg_led_usb_set(struct led_classdev *led_cdev,
	74	enum led_brightness value)
	75	{
	76	if (value) {
	77	latch_value &= ~(1 << FSG_LED_USB_BIT);
	78	*latch_address = latch_value;
	79	} else {
	80	latch_value \|= (1 << FSG_LED_USB_BIT);
	81	*latch_address = latch_value;
	82	}
	83	}
	84
	85	static void fsg_led_sync_set(struct led_classdev *led_cdev,
	86	enum led_brightness value)
	87	{
	88	if (value) {
	89	latch_value &= ~(1 << FSG_LED_SYNC_BIT);
	90	*latch_address = latch_value;
	91	} else {
	92	latch_value \|= (1 << FSG_LED_SYNC_BIT);
	93	*latch_address = latch_value;
	94	}
	95	}
	96
97	static void fsg_led_ring_set(struct led_classdev *led_cdev,
98	enum led_brightness value)
99	{
100	if (value) {
101	latch_value &= ~(1 << FSG_LED_RING_BIT);
102	*latch_address = latch_value;
103	} else {
104	latch_value \|= (1 << FSG_LED_RING_BIT);
105	*latch_address = latch_value;
106	}
107	}
108
109
3b2e46f8 RW	110	static struct led_classdev fsg_wlan_led = {
	111	.name = "fsg:blue:wlan",
	112	.brightness_set = fsg_led_wlan_set,
859cb7f2	113	.flags = LED_CORE_SUSPENDRESUME,
3b2e46f8 RW	114	};
	115
	116	static struct led_classdev fsg_wan_led = {
	117	.name = "fsg:blue:wan",
	118	.brightness_set = fsg_led_wan_set,
859cb7f2	119	.flags = LED_CORE_SUSPENDRESUME,
3b2e46f8 RW	120	};
	121
	122	static struct led_classdev fsg_sata_led = {
	123	.name = "fsg:blue:sata",
	124	.brightness_set = fsg_led_sata_set,
859cb7f2	125	.flags = LED_CORE_SUSPENDRESUME,
3b2e46f8 RW	126	};
	127
	128	static struct led_classdev fsg_usb_led = {
	129	.name = "fsg:blue:usb",
	130	.brightness_set = fsg_led_usb_set,
859cb7f2	131	.flags = LED_CORE_SUSPENDRESUME,
3b2e46f8 RW	132	};
	133
	134	static struct led_classdev fsg_sync_led = {
	135	.name = "fsg:blue:sync",
	136	.brightness_set = fsg_led_sync_set,
859cb7f2	137	.flags = LED_CORE_SUSPENDRESUME,
3b2e46f8 RW	138	};
	139
	140	static struct led_classdev fsg_ring_led = {
	141	.name = "fsg:blue:ring",
	142	.brightness_set = fsg_led_ring_set,
859cb7f2	143	.flags = LED_CORE_SUSPENDRESUME,
3b2e46f8 RW	144	};
	145
	146
3b2e46f8 RW	147	static int fsg_led_probe(struct platform_device *pdev)
	148	{
	149	int ret;
	150
07f696c7 SW	151	/* Map the LED chip select address space */
	152	latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);
	153	if (!latch_address) {
	154	ret = -ENOMEM;
	155	goto failremap;
	156	}
	157
	158	latch_value = 0xffff;
	159	*latch_address = latch_value;
	160
3b2e46f8 RW	161	ret = led_classdev_register(&pdev->dev, &fsg_wlan_led);
	162	if (ret < 0)
	163	goto failwlan;
	164
	165	ret = led_classdev_register(&pdev->dev, &fsg_wan_led);
	166	if (ret < 0)
	167	goto failwan;
	168
	169	ret = led_classdev_register(&pdev->dev, &fsg_sata_led);
	170	if (ret < 0)
	171	goto failsata;
	172
	173	ret = led_classdev_register(&pdev->dev, &fsg_usb_led);
	174	if (ret < 0)
	175	goto failusb;
	176
	177	ret = led_classdev_register(&pdev->dev, &fsg_sync_led);
	178	if (ret < 0)
	179	goto failsync;
	180
	181	ret = led_classdev_register(&pdev->dev, &fsg_ring_led);
	182	if (ret < 0)
	183	goto failring;
	184
3b2e46f8 RW	185	return ret;
3b2e46f8 RW	186
3b2e46f8 RW	187	failring:
	188	led_classdev_unregister(&fsg_sync_led);
	189	failsync:
	190	led_classdev_unregister(&fsg_usb_led);
	191	failusb:
	192	led_classdev_unregister(&fsg_sata_led);
	193	failsata:
	194	led_classdev_unregister(&fsg_wan_led);
	195	failwan:
	196	led_classdev_unregister(&fsg_wlan_led);
	197	failwlan:
07f696c7 SW	198	iounmap(latch_address);
07f696c7 SW	199	failremap:
3b2e46f8 RW	200
	201	return ret;
	202	}
	203
	204	static int fsg_led_remove(struct platform_device *pdev)
	205	{
3b2e46f8 RW	206	led_classdev_unregister(&fsg_wlan_led);
	207	led_classdev_unregister(&fsg_wan_led);
	208	led_classdev_unregister(&fsg_sata_led);
	209	led_classdev_unregister(&fsg_usb_led);
	210	led_classdev_unregister(&fsg_sync_led);
	211	led_classdev_unregister(&fsg_ring_led);
	212
07f696c7 SW	213	iounmap(latch_address);
07f696c7 SW	214
3b2e46f8 RW	215	return 0;
	216	}
	217
	218
	219	static struct platform_driver fsg_led_driver = {
	220	.probe = fsg_led_probe,
	221	.remove = fsg_led_remove,
3b2e46f8 RW	222	.driver = {
	223	.name = "fsg-led",
	224	},
	225	};
	226
892a8843	227	module_platform_driver(fsg_led_driver);
3b2e46f8 RW	228
	229	MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
	230	MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
	231	MODULE_LICENSE("GPL");