v4.19.13 snapshot.
diff --git a/drivers/media/rc/gpio-ir-recv.c b/drivers/media/rc/gpio-ir-recv.c
new file mode 100644
index 0000000..3d99b51
--- /dev/null
+++ b/drivers/media/rc/gpio-ir-recv.c
@@ -0,0 +1,158 @@
+/* Copyright (c) 2012, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <media/rc-core.h>
+
+#define GPIO_IR_DEVICE_NAME "gpio_ir_recv"
+
+struct gpio_rc_dev {
+ struct rc_dev *rcdev;
+ struct gpio_desc *gpiod;
+ int irq;
+};
+
+static irqreturn_t gpio_ir_recv_irq(int irq, void *dev_id)
+{
+ int val;
+ struct gpio_rc_dev *gpio_dev = dev_id;
+
+ val = gpiod_get_value(gpio_dev->gpiod);
+ if (val >= 0)
+ ir_raw_event_store_edge(gpio_dev->rcdev, val == 1);
+
+ return IRQ_HANDLED;
+}
+
+static int gpio_ir_recv_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct gpio_rc_dev *gpio_dev;
+ struct rc_dev *rcdev;
+ int rc;
+
+ if (!np)
+ return -ENODEV;
+
+ gpio_dev = devm_kzalloc(dev, sizeof(*gpio_dev), GFP_KERNEL);
+ if (!gpio_dev)
+ return -ENOMEM;
+
+ gpio_dev->gpiod = devm_gpiod_get(dev, NULL, GPIOD_IN);
+ if (IS_ERR(gpio_dev->gpiod)) {
+ rc = PTR_ERR(gpio_dev->gpiod);
+ /* Just try again if this happens */
+ if (rc != -EPROBE_DEFER)
+ dev_err(dev, "error getting gpio (%d)\n", rc);
+ return rc;
+ }
+ gpio_dev->irq = gpiod_to_irq(gpio_dev->gpiod);
+ if (gpio_dev->irq < 0)
+ return gpio_dev->irq;
+
+ rcdev = devm_rc_allocate_device(dev, RC_DRIVER_IR_RAW);
+ if (!rcdev)
+ return -ENOMEM;
+
+ rcdev->priv = gpio_dev;
+ rcdev->device_name = GPIO_IR_DEVICE_NAME;
+ rcdev->input_phys = GPIO_IR_DEVICE_NAME "/input0";
+ rcdev->input_id.bustype = BUS_HOST;
+ rcdev->input_id.vendor = 0x0001;
+ rcdev->input_id.product = 0x0001;
+ rcdev->input_id.version = 0x0100;
+ rcdev->dev.parent = dev;
+ rcdev->driver_name = KBUILD_MODNAME;
+ rcdev->min_timeout = 1;
+ rcdev->timeout = IR_DEFAULT_TIMEOUT;
+ rcdev->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
+ rcdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
+ rcdev->map_name = of_get_property(np, "linux,rc-map-name", NULL);
+ if (!rcdev->map_name)
+ rcdev->map_name = RC_MAP_EMPTY;
+
+ gpio_dev->rcdev = rcdev;
+
+ rc = devm_rc_register_device(dev, rcdev);
+ if (rc < 0) {
+ dev_err(dev, "failed to register rc device (%d)\n", rc);
+ return rc;
+ }
+
+ platform_set_drvdata(pdev, gpio_dev);
+
+ return devm_request_irq(dev, gpio_dev->irq, gpio_ir_recv_irq,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "gpio-ir-recv-irq", gpio_dev);
+}
+
+#ifdef CONFIG_PM
+static int gpio_ir_recv_suspend(struct device *dev)
+{
+ struct gpio_rc_dev *gpio_dev = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(gpio_dev->irq);
+ else
+ disable_irq(gpio_dev->irq);
+
+ return 0;
+}
+
+static int gpio_ir_recv_resume(struct device *dev)
+{
+ struct gpio_rc_dev *gpio_dev = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(gpio_dev->irq);
+ else
+ enable_irq(gpio_dev->irq);
+
+ return 0;
+}
+
+static const struct dev_pm_ops gpio_ir_recv_pm_ops = {
+ .suspend = gpio_ir_recv_suspend,
+ .resume = gpio_ir_recv_resume,
+};
+#endif
+
+static const struct of_device_id gpio_ir_recv_of_match[] = {
+ { .compatible = "gpio-ir-receiver", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, gpio_ir_recv_of_match);
+
+static struct platform_driver gpio_ir_recv_driver = {
+ .probe = gpio_ir_recv_probe,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .of_match_table = of_match_ptr(gpio_ir_recv_of_match),
+#ifdef CONFIG_PM
+ .pm = &gpio_ir_recv_pm_ops,
+#endif
+ },
+};
+module_platform_driver(gpio_ir_recv_driver);
+
+MODULE_DESCRIPTION("GPIO IR Receiver driver");
+MODULE_LICENSE("GPL v2");