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Message-Id: <200709140418.l8E4IQPw024439@po-mbox302.po.2iij.net>
Date: Fri, 14 Sep 2007 13:16:48 +0900
From: Yoichi Yuasa <yoichi_yuasa@...peaks.co.jp>
To: Richard Purdie <rpurdie@...ys.net>
Cc: yoichi_yuasa@...peaks.co.jp,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH][2/3] led: add Cobalt Raq series LEDs support
Add Cobalt Raq series LEDs support.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@...peaks.co.jp>
diff -pruN -X mips/Documentation/dontdiff mips-orig/drivers/leds/Kconfig mips/drivers/leds/Kconfig
--- mips-orig/drivers/leds/Kconfig 2007-09-14 13:05:27.969928000 +0900
+++ mips/drivers/leds/Kconfig 2007-09-14 13:05:39.450645500 +0900
@@ -93,6 +93,13 @@ config LEDS_COBALT_QUBE
help
This option enables support for the front LED on Cobalt Qube series
+config LEDS_COBALT_RAQ
+ bool "LED Support for the Cobalt Raq series"
+ depends on LEDS_CLASS && MIPS_COBALT
+ select LEDS_TRIGGERS
+ help
+ This option enables support for the Cobalt Raq series LEDs.
+
config LEDS_GPIO
tristate "LED Support for GPIO connected LEDs"
depends on LEDS_CLASS && GENERIC_GPIO
diff -pruN -X mips/Documentation/dontdiff mips-orig/drivers/leds/Makefile mips/drivers/leds/Makefile
--- mips-orig/drivers/leds/Makefile 2007-09-14 13:05:27.981928750 +0900
+++ mips/drivers/leds/Makefile 2007-09-14 13:05:39.450645500 +0900
@@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_NET48XX) += leds-net4
obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
+obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
# LED Triggers
diff -pruN -X mips/Documentation/dontdiff mips-orig/drivers/leds/leds-cobalt-raq.c mips/drivers/leds/leds-cobalt-raq.c
--- mips-orig/drivers/leds/leds-cobalt-raq.c 1970-01-01 09:00:00.000000000 +0900
+++ mips/drivers/leds/leds-cobalt-raq.c 2007-09-14 13:06:03.900173500 +0900
@@ -0,0 +1,135 @@
+/*
+ * LEDs driver for the Cobalt Raq series.
+ *
+ * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@...peaks.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/init.h>
+#include <linux/ioport.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+
+#define LED_WEB 0x04
+#define LED_POWER_OFF 0x08
+
+static void __iomem *led_port;
+static u8 led_value;
+static DEFINE_SPINLOCK(led_value_lock);
+
+static void raq_web_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ spin_lock_irq(&led_value_lock);
+
+ if (brightness)
+ led_value |= LED_WEB;
+ else
+ led_value &= ~LED_WEB;
+ writeb(led_value, led_port);
+
+ spin_unlock_irq(&led_value_lock);
+}
+
+static struct led_classdev raq_web_led = {
+ .name = "raq-web",
+ .brightness_set = raq_web_led_set,
+};
+
+static void raq_power_off_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ spin_lock_irq(&led_value_lock);
+
+ if (brightness)
+ led_value |= LED_POWER_OFF;
+ else
+ led_value &= ~LED_POWER_OFF;
+ writeb(led_value, led_port);
+
+ spin_unlock_irq(&led_value_lock);
+}
+
+static struct led_classdev raq_power_off_led = {
+ .name = "raq-power-off",
+ .brightness_set = raq_power_off_led_set,
+ .default_trigger = "power-off",
+};
+
+static int __devinit cobalt_raq_led_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ int retval;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EBUSY;
+
+ led_port = ioremap(res->start, res->end - res->start + 1);
+ if (!led_port)
+ return -ENOMEM;
+
+ retval = led_classdev_register(&pdev->dev, &raq_power_off_led);
+ if (retval)
+ goto err_iounmap;
+
+ retval = led_classdev_register(&pdev->dev, &raq_web_led);
+ if (retval)
+ goto err_unregister;
+
+ return 0;
+
+err_unregister:
+ led_classdev_unregister(&raq_power_off_led);
+
+err_iounmap:
+ iounmap(led_port);
+ led_port = NULL;
+
+ return retval;
+}
+
+static int __devexit cobalt_raq_led_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&raq_power_off_led);
+ led_classdev_unregister(&raq_web_led);
+
+ if (led_port) {
+ iounmap(led_port);
+ led_port = NULL;
+ }
+
+ return 0;
+}
+
+static struct platform_driver cobalt_raq_led_driver = {
+ .probe = cobalt_raq_led_probe,
+ .remove = __devexit_p(cobalt_raq_led_remove),
+ .driver = {
+ .name = "Cobalt Raq LEDs",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init cobalt_raq_led_init(void)
+{
+ return platform_driver_register(&cobalt_raq_led_driver);
+}
+
+module_init(cobalt_raq_led_init);
-
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