mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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0fc3447849
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11204 3c298f89-4303-0410-b956-a3cf2f4a3e73
316 lines
7.9 KiB
Diff
316 lines
7.9 KiB
Diff
From a66e34fefb3f8142d7f16808563eb610225f6e77 Mon Sep 17 00:00:00 2001
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From: Rod Whitby <rod@whitby.id.au>
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Date: Tue, 29 Jan 2008 23:17:42 +1030
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Subject: [PATCH] leds: Add new driver for the LEDs on the Freecom FSG-3
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The LEDs on the Freecom FSG-3 are connected to an external
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memory-mapped latch on the ixp4xx expansion bus, and therefore cannot
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be supported by any of the existing LEDs drivers.
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Signed-off-by: Rod Whitby <rod@whitby.id.au>
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--
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PATCH FOLLOWS
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KernelVersion: v2.6.25-rc6-117-g457fb60
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---
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drivers/leds/Kconfig | 6 +
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drivers/leds/Makefile | 1 +
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drivers/leds/leds-fsg.c | 261 +++++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 268 insertions(+), 0 deletions(-)
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create mode 100644 drivers/leds/leds-fsg.c
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Index: linux-2.6.25.4/drivers/leds/Kconfig
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===================================================================
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--- linux-2.6.25.4.orig/drivers/leds/Kconfig
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+++ linux-2.6.25.4/drivers/leds/Kconfig
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@@ -46,6 +46,12 @@ config LEDS_SPITZ
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This option enables support for the LEDs on Sharp Zaurus
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SL-Cxx00 series (C1000, C3000, C3100).
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+config LEDS_FSG
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+ tristate "LED Support for the Freecom FSG-3"
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+ depends on LEDS_CLASS && MACH_FSG
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+ help
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+ This option enables support for the LEDs on the Freecom FSG-3.
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+
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config LEDS_TOSA
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tristate "LED Support for the Sharp SL-6000 series"
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depends on LEDS_CLASS && PXA_SHARPSL
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Index: linux-2.6.25.4/drivers/leds/Makefile
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===================================================================
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--- linux-2.6.25.4.orig/drivers/leds/Makefile
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+++ linux-2.6.25.4/drivers/leds/Makefile
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@@ -22,6 +22,7 @@ obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
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obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o
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obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
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obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
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+obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
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# LED Triggers
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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Index: linux-2.6.25.4/drivers/leds/leds-fsg.c
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===================================================================
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--- /dev/null
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+++ linux-2.6.25.4/drivers/leds/leds-fsg.c
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@@ -0,0 +1,261 @@
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+/*
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+ * LED Driver for the Freecom FSG-3
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+ *
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+ * Copyright (c) 2008 Rod Whitby <rod@whitby.id.au>
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+ *
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+ * Author: Rod Whitby <rod@whitby.id.au>
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+ *
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+ * Based on leds-spitz.c
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+ * Copyright 2005-2006 Openedhand Ltd.
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+ * Author: Richard Purdie <rpurdie@openedhand.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/init.h>
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+#include <linux/platform_device.h>
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+#include <linux/leds.h>
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+#include <asm/arch/hardware.h>
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+#include <asm/io.h>
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+
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+static short __iomem *latch_address;
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+static unsigned short latch_value;
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+
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+
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+static void fsg_led_wlan_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ if (value) {
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+ latch_value &= ~(1 << FSG_LED_WLAN_BIT);
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+ *latch_address = latch_value;
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+ } else {
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+ latch_value |= (1 << FSG_LED_WLAN_BIT);
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+ *latch_address = latch_value;
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+ }
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+}
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+
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+static void fsg_led_wan_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ if (value) {
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+ latch_value &= ~(1 << FSG_LED_WAN_BIT);
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+ *latch_address = latch_value;
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+ } else {
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+ latch_value |= (1 << FSG_LED_WAN_BIT);
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+ *latch_address = latch_value;
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+ }
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+}
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+
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+static void fsg_led_sata_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ if (value) {
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+ latch_value &= ~(1 << FSG_LED_SATA_BIT);
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+ *latch_address = latch_value;
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+ } else {
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+ latch_value |= (1 << FSG_LED_SATA_BIT);
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+ *latch_address = latch_value;
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+ }
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+}
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+
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+static void fsg_led_usb_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ if (value) {
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+ latch_value &= ~(1 << FSG_LED_USB_BIT);
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+ *latch_address = latch_value;
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+ } else {
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+ latch_value |= (1 << FSG_LED_USB_BIT);
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+ *latch_address = latch_value;
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+ }
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+}
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+
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+static void fsg_led_sync_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ if (value) {
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+ latch_value &= ~(1 << FSG_LED_SYNC_BIT);
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+ *latch_address = latch_value;
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+ } else {
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+ latch_value |= (1 << FSG_LED_SYNC_BIT);
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+ *latch_address = latch_value;
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+ }
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+}
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+
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+static void fsg_led_ring_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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+ if (value) {
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+ latch_value &= ~(1 << FSG_LED_RING_BIT);
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+ *latch_address = latch_value;
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+ } else {
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+ latch_value |= (1 << FSG_LED_RING_BIT);
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+ *latch_address = latch_value;
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+ }
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+}
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+
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+
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+
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+static struct led_classdev fsg_wlan_led = {
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+ .name = "fsg:blue:wlan",
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+ .brightness_set = fsg_led_wlan_set,
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+};
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+
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+static struct led_classdev fsg_wan_led = {
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+ .name = "fsg:blue:wan",
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+ .brightness_set = fsg_led_wan_set,
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+};
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+
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+static struct led_classdev fsg_sata_led = {
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+ .name = "fsg:blue:sata",
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+ .brightness_set = fsg_led_sata_set,
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+};
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+
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+static struct led_classdev fsg_usb_led = {
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+ .name = "fsg:blue:usb",
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+ .brightness_set = fsg_led_usb_set,
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+};
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+
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+static struct led_classdev fsg_sync_led = {
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+ .name = "fsg:blue:sync",
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+ .brightness_set = fsg_led_sync_set,
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+};
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+
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+static struct led_classdev fsg_ring_led = {
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+ .name = "fsg:blue:ring",
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+ .brightness_set = fsg_led_ring_set,
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+};
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+
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+
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+
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+#ifdef CONFIG_PM
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+static int fsg_led_suspend(struct platform_device *dev, pm_message_t state)
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+{
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+ led_classdev_suspend(&fsg_wlan_led);
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+ led_classdev_suspend(&fsg_wan_led);
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+ led_classdev_suspend(&fsg_sata_led);
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+ led_classdev_suspend(&fsg_usb_led);
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+ led_classdev_suspend(&fsg_sync_led);
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+ led_classdev_suspend(&fsg_ring_led);
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+ return 0;
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+}
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+
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+static int fsg_led_resume(struct platform_device *dev)
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+{
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+ led_classdev_resume(&fsg_wlan_led);
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+ led_classdev_resume(&fsg_wan_led);
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+ led_classdev_resume(&fsg_sata_led);
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+ led_classdev_resume(&fsg_usb_led);
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+ led_classdev_resume(&fsg_sync_led);
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+ led_classdev_resume(&fsg_ring_led);
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+ return 0;
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+}
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+#endif
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+
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+
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+static int fsg_led_probe(struct platform_device *pdev)
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+{
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+ int ret;
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+
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+ ret = led_classdev_register(&pdev->dev, &fsg_wlan_led);
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+ if (ret < 0)
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+ goto failwlan;
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+
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+ ret = led_classdev_register(&pdev->dev, &fsg_wan_led);
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+ if (ret < 0)
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+ goto failwan;
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+
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+ ret = led_classdev_register(&pdev->dev, &fsg_sata_led);
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+ if (ret < 0)
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+ goto failsata;
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+
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+ ret = led_classdev_register(&pdev->dev, &fsg_usb_led);
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+ if (ret < 0)
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+ goto failusb;
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+
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+ ret = led_classdev_register(&pdev->dev, &fsg_sync_led);
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+ if (ret < 0)
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+ goto failsync;
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+
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+ ret = led_classdev_register(&pdev->dev, &fsg_ring_led);
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+ if (ret < 0)
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+ goto failring;
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+
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+ /* Map the LED chip select address space */
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+ latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);
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+ if (!latch_address) {
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+ ret = -ENOMEM;
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+ goto failremap;
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+ }
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+
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+ latch_value = 0xffff;
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+ *latch_address = latch_value;
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+
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+ return ret;
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+
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+ failremap:
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+ led_classdev_unregister(&fsg_ring_led);
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+ failring:
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+ led_classdev_unregister(&fsg_sync_led);
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+ failsync:
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+ led_classdev_unregister(&fsg_usb_led);
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+ failusb:
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+ led_classdev_unregister(&fsg_sata_led);
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+ failsata:
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+ led_classdev_unregister(&fsg_wan_led);
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+ failwan:
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+ led_classdev_unregister(&fsg_wlan_led);
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+ failwlan:
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+
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+ return ret;
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+}
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+
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+static int fsg_led_remove(struct platform_device *pdev)
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+{
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+ iounmap(latch_address);
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+
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+ led_classdev_unregister(&fsg_wlan_led);
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+ led_classdev_unregister(&fsg_wan_led);
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+ led_classdev_unregister(&fsg_sata_led);
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+ led_classdev_unregister(&fsg_usb_led);
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+ led_classdev_unregister(&fsg_sync_led);
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+ led_classdev_unregister(&fsg_ring_led);
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+
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+ return 0;
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+}
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+
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+
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+static struct platform_driver fsg_led_driver = {
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+ .probe = fsg_led_probe,
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+ .remove = fsg_led_remove,
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+#ifdef CONFIG_PM
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+ .suspend = fsg_led_suspend,
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+ .resume = fsg_led_resume,
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+#endif
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+ .driver = {
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+ .name = "fsg-led",
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+ },
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+};
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+
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+
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+static int __init fsg_led_init(void)
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+{
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+ return platform_driver_register(&fsg_led_driver);
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+}
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+
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+static void __exit fsg_led_exit(void)
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+{
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+ platform_driver_unregister(&fsg_led_driver);
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+}
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+
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+
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+module_init(fsg_led_init);
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+module_exit(fsg_led_exit);
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+
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+MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
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+MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
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+MODULE_LICENSE("GPL");
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