ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/input/misc/e3x0-button.c b/marvell/linux/drivers/input/misc/e3x0-button.c
new file mode 100644
index 0000000..e2fde6e
--- /dev/null
+++ b/marvell/linux/drivers/input/misc/e3x0-button.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014, National Instruments Corp. All rights reserved.
+ *
+ * Driver for NI Ettus Research USRP E3x0 Button Driver
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+static irqreturn_t e3x0_button_release_handler(int irq, void *data)
+{
+ struct input_dev *idev = data;
+
+ input_report_key(idev, KEY_POWER, 0);
+ input_sync(idev);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t e3x0_button_press_handler(int irq, void *data)
+{
+ struct input_dev *idev = data;
+
+ input_report_key(idev, KEY_POWER, 1);
+ pm_wakeup_event(idev->dev.parent, 0);
+ input_sync(idev);
+
+ return IRQ_HANDLED;
+}
+
+static int __maybe_unused e3x0_button_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(platform_get_irq_byname(pdev, "press"));
+
+ return 0;
+}
+
+static int __maybe_unused e3x0_button_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(platform_get_irq_byname(pdev, "press"));
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(e3x0_button_pm_ops,
+ e3x0_button_suspend, e3x0_button_resume);
+
+static int e3x0_button_probe(struct platform_device *pdev)
+{
+ struct input_dev *input;
+ int irq_press, irq_release;
+ int error;
+
+ irq_press = platform_get_irq_byname(pdev, "press");
+ if (irq_press < 0)
+ return irq_press;
+
+ irq_release = platform_get_irq_byname(pdev, "release");
+ if (irq_release < 0)
+ return irq_release;
+
+ input = devm_input_allocate_device(&pdev->dev);
+ if (!input)
+ return -ENOMEM;
+
+ input->name = "NI Ettus Research USRP E3x0 Button Driver";
+ input->phys = "e3x0_button/input0";
+ input->dev.parent = &pdev->dev;
+
+ input_set_capability(input, EV_KEY, KEY_POWER);
+
+ error = devm_request_irq(&pdev->dev, irq_press,
+ e3x0_button_press_handler, 0,
+ "e3x0-button", input);
+ if (error) {
+ dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n",
+ irq_press, error);
+ return error;
+ }
+
+ error = devm_request_irq(&pdev->dev, irq_release,
+ e3x0_button_release_handler, 0,
+ "e3x0-button", input);
+ if (error) {
+ dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n",
+ irq_release, error);
+ return error;
+ }
+
+ error = input_register_device(input);
+ if (error) {
+ dev_err(&pdev->dev, "Can't register input device: %d\n", error);
+ return error;
+ }
+
+ device_init_wakeup(&pdev->dev, 1);
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id e3x0_button_match[] = {
+ { .compatible = "ettus,e3x0-button", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, e3x0_button_match);
+#endif
+
+static struct platform_driver e3x0_button_driver = {
+ .driver = {
+ .name = "e3x0-button",
+ .of_match_table = of_match_ptr(e3x0_button_match),
+ .pm = &e3x0_button_pm_ops,
+ },
+ .probe = e3x0_button_probe,
+};
+
+module_platform_driver(e3x0_button_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>");
+MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver");
+MODULE_ALIAS("platform:e3x0-button");