Exemplary driver showing usage of the Flash Manager API
for registering/unregistering asynchronous multiplexers
Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Bryan Wu <cooloney@xxxxxxxxx>
Cc: Richard Purdie <rpurdie@xxxxxxxxx>
---
Documentation/leds/leds-async-mux.c | 65 +++++++++++++++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 Documentation/leds/leds-async-mux.c
diff --git a/Documentation/leds/leds-async-mux.c b/Documentation/leds/leds-async-mux.c
new file mode 100644
index 0000000..ee35d2f
--- /dev/null
+++ b/Documentation/leds/leds-async-mux.c
@@ -0,0 +1,65 @@
+/*
+ * Exemplary driver showing usage of the Flash Manager API
+ * for registering/unregistering asynchronous multiplexers.
+ *
+ * Copyright (C) 2014, Samsung Electronics Co., Ltd.
+ * Author: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
+ *
+ * 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/platform_device.h>
+#include <linux/module.h>
+#include <linux/led-class-flash.h>
+#include <linux/led-flash-manager.h>
+#include <linux/leds.h>
+#include <linux/of.h>
+
+static int led_async_mux_select_line(u32 line_id, void *mux)
+{
+ pr_info("led_async_mux_select_line line_id: %d\n", line_id);
+ return 0;
+}
+
+struct led_flash_mux_ops mux_ops = {
+ .select_line = led_async_mux_select_line,
+};
+
+static int led_async_mux_probe(struct platform_device *pdev)
+{
+ struct led_flash_mux mux;
+
+ mux.ops = &mux_ops;
+ mux.owner = THIS_MODULE;
+ mux.node = pdev->dev->of_node;
+
+ return led_flash_manager_bind_async_mux(&mux);
+}
+
+static int led_async_mux_remove(struct platform_device *pdev)
+{
+ return led_flash_manager_unbind_async_mux(pdev->dev->of_node);
+}
+
+static struct of_device_id led_async_mux_dt_match[] = {
+ {.compatible = "led-async-mux"},
+ {},
+};
+
+static struct platform_driver led_async_mux_driver = {
+ .probe = led_async_mux_probe,
+ .remove = led_async_mux_remove,
+ .driver = {
+ .name = "led-async-mux",
+ .owner = THIS_MODULE,
+ .of_match_table = led_async_mux_dt_match,
+ },
+};
+
+module_platform_driver(led_async_mux_driver);
+
+MODULE_AUTHOR("Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("LED async mux");
+MODULE_LICENSE("GPL");
--
1.7.9.5
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