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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/leds/leds-fsg.c
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/leds/leds-fsg.c')
-rw-r--r--drivers/leds/leds-fsg.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/drivers/leds/leds-fsg.c b/drivers/leds/leds-fsg.c
new file mode 100644
index 000000000..257a813c7
--- /dev/null
+++ b/drivers/leds/leds-fsg.c
@@ -0,0 +1,197 @@
+/*
+ * 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/platform_device.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <mach/hardware.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 *) devm_ioremap(&pdev->dev,
+ IXP4XX_EXP_BUS_BASE(2), 512);
+ if (!latch_address)
+ return -ENOMEM;
+
+ latch_value = 0xffff;
+ *latch_address = latch_value;
+
+ ret = devm_led_classdev_register(&pdev->dev, &fsg_wlan_led);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_led_classdev_register(&pdev->dev, &fsg_wan_led);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_led_classdev_register(&pdev->dev, &fsg_sata_led);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_led_classdev_register(&pdev->dev, &fsg_usb_led);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_led_classdev_register(&pdev->dev, &fsg_sync_led);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_led_classdev_register(&pdev->dev, &fsg_ring_led);
+ if (ret < 0)
+ return ret;
+
+ return ret;
+}
+
+static struct platform_driver fsg_led_driver = {
+ .probe = fsg_led_probe,
+ .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");