summaryrefslogtreecommitdiffstats
path: root/drivers/leds/leds-net48xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/leds/leds-net48xx.c')
-rw-r--r--drivers/leds/leds-net48xx.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/leds/leds-net48xx.c b/drivers/leds/leds-net48xx.c
new file mode 100644
index 0000000000..a93468c137
--- /dev/null
+++ b/drivers/leds/leds-net48xx.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * LEDs driver for Soekris net48xx
+ *
+ * Copyright (C) 2006 Chris Boot <bootc@bootc.net>
+ *
+ * Based on leds-ams-delta.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/nsc_gpio.h>
+#include <linux/scx200_gpio.h>
+#include <linux/module.h>
+
+#define DRVNAME "net48xx-led"
+#define NET48XX_ERROR_LED_GPIO 20
+
+static struct platform_device *pdev;
+
+static void net48xx_error_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ scx200_gpio_ops.gpio_set(NET48XX_ERROR_LED_GPIO, value ? 1 : 0);
+}
+
+static struct led_classdev net48xx_error_led = {
+ .name = "net48xx::error",
+ .brightness_set = net48xx_error_led_set,
+ .flags = LED_CORE_SUSPENDRESUME,
+};
+
+static int net48xx_led_probe(struct platform_device *pdev)
+{
+ return devm_led_classdev_register(&pdev->dev, &net48xx_error_led);
+}
+
+static struct platform_driver net48xx_led_driver = {
+ .probe = net48xx_led_probe,
+ .driver = {
+ .name = DRVNAME,
+ },
+};
+
+static int __init net48xx_led_init(void)
+{
+ int ret;
+
+ /* small hack, but scx200_gpio doesn't set .dev if the probe fails */
+ if (!scx200_gpio_ops.dev) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ ret = platform_driver_register(&net48xx_led_driver);
+ if (ret < 0)
+ goto out;
+
+ pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
+ if (IS_ERR(pdev)) {
+ ret = PTR_ERR(pdev);
+ platform_driver_unregister(&net48xx_led_driver);
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void __exit net48xx_led_exit(void)
+{
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&net48xx_led_driver);
+}
+
+module_init(net48xx_led_init);
+module_exit(net48xx_led_exit);
+
+MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
+MODULE_DESCRIPTION("Soekris net48xx LED driver");
+MODULE_LICENSE("GPL");
+