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Message-ID: <20080719122339.GA28813@atlantis.8hz.com>
Date: Sat, 19 Jul 2008 12:23:39 +0000
From: Sean Young <sean@...s.org>
To: Richard Purdie <rpurdie@...ys.net>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] Led driver for technologic systems 5500
Here is a patch for the led on the Technologic Systems 5500 board. Detection
is a bit flimsy; Is there anything that can be done about that?
Signed-off-by: Sean Young <sean@...s.org>
---
diff -urpN linux-2.6.26/drivers/leds/Kconfig /home/sean/tiger/linux-2.6.26/drivers/leds/Kconfig
--- linux-2.6.26/drivers/leds/Kconfig 2008-07-13 22:51:29.000000000 +0100
+++ /home/sean/tiger/linux-2.6.26/drivers/leds/Kconfig 2008-07-17 15:14:55.000000000 +0100
@@ -147,6 +147,16 @@ config LEDS_CLEVO_MAIL
To compile this driver as a module, choose M here: the
module will be called leds-clevo-mail.
+config LEDS_TS5500
+ tristate "LED Support for the TS-5500"
+ depends on LEDS_CLASS && X86
+ help
+ This driver makes the led on the Technology Systems 5500
+ (and possibly other models) accessible for userspace.
+
+ Note that this led is hardwired to be xor'ed with Compact Flash
+ activity.
+
comment "LED Triggers"
config LEDS_TRIGGERS
diff -urpN linux-2.6.26/drivers/leds/leds-ts5500.c /home/sean/tiger/linux-2.6.26/drivers/leds/leds-ts5500.c
--- linux-2.6.26/drivers/leds/leds-ts5500.c 1970-01-01 01:00:00.000000000 +0100
+++ /home/sean/tiger/linux-2.6.26/drivers/leds/leds-ts5500.c 2008-07-19 13:08:19.000000000 +0100
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2008 Sean Young <sean@...s.org>
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+
+static struct platform_device *ts5500_platform_device;
+
+static void ts5500_led_set(struct led_classdev *led_dev, enum led_brightness value)
+{
+ outb(value ? 1 : 0, 0x77);
+}
+
+static struct led_classdev ts5500_led = {
+ .name = "ts5500:green",
+ .brightness_set = ts5500_led_set,
+};
+
+static int __devinit ts5500leds_probe(struct platform_device *pdev)
+{
+ return led_classdev_register(&pdev->dev, &ts5500_led);
+}
+
+static int __devexit ts5500leds_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&ts5500_led);
+ return 0;
+}
+
+static struct platform_driver ts5500leds_driver = {
+ .driver = {
+ .name = "ts5500-leds",
+ .owner = THIS_MODULE,
+ },
+ .probe = ts5500leds_probe,
+ .remove = __devexit_p(ts5500leds_remove),
+};
+
+
+static int __init ts5500leds_init(void)
+{
+ int rc;
+ uint8_t product_code;
+
+ if (!request_region(0x74, 1, "ts5500-leds"))
+ return -ENODEV;
+
+ product_code = inb(0x74);
+
+ release_region(0x74, 1);
+
+ if (product_code != 0x60)
+ return -ENODEV;
+
+ if (!request_region(0x77, 1, "ts5500-leds"))
+ return -ENODEV;
+
+ rc = platform_driver_register(&ts5500leds_driver);
+ if (rc)
+ goto free_port;
+
+ ts5500_platform_device = platform_device_alloc("ts5500-leds", -1);
+ if (!ts5500_platform_device)
+ goto driver_unreg;
+
+ rc = platform_device_add(ts5500_platform_device);
+ if (rc)
+ goto free_device;
+
+ return 0;
+
+free_port:
+ release_region(0x77, 1);
+free_device:
+ platform_device_put(ts5500_platform_device);
+driver_unreg:
+ platform_driver_unregister(&ts5500leds_driver);
+
+ return rc;
+}
+
+static void __exit ts5500leds_exit(void)
+{
+ platform_device_unregister(ts5500_platform_device);
+ platform_driver_unregister(&ts5500leds_driver);
+ release_region(0x77, 1);
+}
+
+module_init(ts5500leds_init);
+module_exit(ts5500leds_exit);
+
+MODULE_AUTHOR("Sean Young <sean@...s.org>");
+MODULE_DESCRIPTION("LED driver for the Technology Systems 5500");
+MODULE_LICENSE("GPL");
diff -urpN linux-2.6.26/drivers/leds/Makefile /home/sean/tiger/linux-2.6.26/drivers/leds/Makefile
--- linux-2.6.26/drivers/leds/Makefile 2008-07-13 22:51:29.000000000 +0100
+++ /home/sean/tiger/linux-2.6.26/drivers/leds/Makefile 2008-07-17 15:14:55.000000000 +0100
@@ -21,6 +21,7 @@ obj-$(CONFIG_LEDS_CM_X270)
obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
+obj-$(CONFIG_LEDS_TS5500) += leds-ts5500.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
--
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