[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/input/joystick/pxrc.c b/src/kernel/linux/v4.19/drivers/input/joystick/pxrc.c
new file mode 100644
index 0000000..ea2bf59
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/input/joystick/pxrc.c
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for Phoenix RC Flight Controller Adapter
+ *
+ * Copyright (C) 2018 Marcus Folkesson <marcus.folkesson@gmail.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/input.h>
+#include <linux/mutex.h>
+#include <linux/input.h>
+
+#define PXRC_VENDOR_ID 0x1781
+#define PXRC_PRODUCT_ID 0x0898
+
+struct pxrc {
+ struct input_dev *input;
+ struct usb_interface *intf;
+ struct urb *urb;
+ struct mutex pm_mutex;
+ bool is_open;
+ char phys[64];
+};
+
+static void pxrc_usb_irq(struct urb *urb)
+{
+ struct pxrc *pxrc = urb->context;
+ u8 *data = urb->transfer_buffer;
+ int error;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ETIME:
+ /* this urb is timing out */
+ dev_dbg(&pxrc->intf->dev,
+ "%s - urb timed out - was the device unplugged?\n",
+ __func__);
+ return;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ case -EPIPE:
+ /* this urb is terminated, clean up */
+ dev_dbg(&pxrc->intf->dev, "%s - urb shutting down with status: %d\n",
+ __func__, urb->status);
+ return;
+ default:
+ dev_dbg(&pxrc->intf->dev, "%s - nonzero urb status received: %d\n",
+ __func__, urb->status);
+ goto exit;
+ }
+
+ if (urb->actual_length == 8) {
+ input_report_abs(pxrc->input, ABS_X, data[0]);
+ input_report_abs(pxrc->input, ABS_Y, data[2]);
+ input_report_abs(pxrc->input, ABS_RX, data[3]);
+ input_report_abs(pxrc->input, ABS_RY, data[4]);
+ input_report_abs(pxrc->input, ABS_RUDDER, data[5]);
+ input_report_abs(pxrc->input, ABS_THROTTLE, data[6]);
+ input_report_abs(pxrc->input, ABS_MISC, data[7]);
+
+ input_report_key(pxrc->input, BTN_A, data[1]);
+ }
+
+exit:
+ /* Resubmit to fetch new fresh URBs */
+ error = usb_submit_urb(urb, GFP_ATOMIC);
+ if (error && error != -EPERM)
+ dev_err(&pxrc->intf->dev,
+ "%s - usb_submit_urb failed with result: %d",
+ __func__, error);
+}
+
+static int pxrc_open(struct input_dev *input)
+{
+ struct pxrc *pxrc = input_get_drvdata(input);
+ int retval;
+
+ mutex_lock(&pxrc->pm_mutex);
+ retval = usb_submit_urb(pxrc->urb, GFP_KERNEL);
+ if (retval) {
+ dev_err(&pxrc->intf->dev,
+ "%s - usb_submit_urb failed, error: %d\n",
+ __func__, retval);
+ retval = -EIO;
+ goto out;
+ }
+
+ pxrc->is_open = true;
+
+out:
+ mutex_unlock(&pxrc->pm_mutex);
+ return retval;
+}
+
+static void pxrc_close(struct input_dev *input)
+{
+ struct pxrc *pxrc = input_get_drvdata(input);
+
+ mutex_lock(&pxrc->pm_mutex);
+ usb_kill_urb(pxrc->urb);
+ pxrc->is_open = false;
+ mutex_unlock(&pxrc->pm_mutex);
+}
+
+static void pxrc_free_urb(void *_pxrc)
+{
+ struct pxrc *pxrc = _pxrc;
+
+ usb_free_urb(pxrc->urb);
+}
+
+static int pxrc_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct pxrc *pxrc;
+ struct usb_endpoint_descriptor *epirq;
+ size_t xfer_size;
+ void *xfer_buf;
+ int error;
+
+ /*
+ * Locate the endpoint information. This device only has an
+ * interrupt endpoint.
+ */
+ error = usb_find_common_endpoints(intf->cur_altsetting,
+ NULL, NULL, &epirq, NULL);
+ if (error) {
+ dev_err(&intf->dev, "Could not find endpoint\n");
+ return error;
+ }
+
+ pxrc = devm_kzalloc(&intf->dev, sizeof(*pxrc), GFP_KERNEL);
+ if (!pxrc)
+ return -ENOMEM;
+
+ mutex_init(&pxrc->pm_mutex);
+ pxrc->intf = intf;
+
+ usb_set_intfdata(pxrc->intf, pxrc);
+
+ xfer_size = usb_endpoint_maxp(epirq);
+ xfer_buf = devm_kmalloc(&intf->dev, xfer_size, GFP_KERNEL);
+ if (!xfer_buf)
+ return -ENOMEM;
+
+ pxrc->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!pxrc->urb)
+ return -ENOMEM;
+
+ error = devm_add_action_or_reset(&intf->dev, pxrc_free_urb, pxrc);
+ if (error)
+ return error;
+
+ usb_fill_int_urb(pxrc->urb, udev,
+ usb_rcvintpipe(udev, epirq->bEndpointAddress),
+ xfer_buf, xfer_size, pxrc_usb_irq, pxrc, 1);
+
+ pxrc->input = devm_input_allocate_device(&intf->dev);
+ if (!pxrc->input) {
+ dev_err(&intf->dev, "couldn't allocate input device\n");
+ return -ENOMEM;
+ }
+
+ pxrc->input->name = "PXRC Flight Controller Adapter";
+
+ usb_make_path(udev, pxrc->phys, sizeof(pxrc->phys));
+ strlcat(pxrc->phys, "/input0", sizeof(pxrc->phys));
+ pxrc->input->phys = pxrc->phys;
+
+ usb_to_input_id(udev, &pxrc->input->id);
+
+ pxrc->input->open = pxrc_open;
+ pxrc->input->close = pxrc_close;
+
+ input_set_capability(pxrc->input, EV_KEY, BTN_A);
+ input_set_abs_params(pxrc->input, ABS_X, 0, 255, 0, 0);
+ input_set_abs_params(pxrc->input, ABS_Y, 0, 255, 0, 0);
+ input_set_abs_params(pxrc->input, ABS_RX, 0, 255, 0, 0);
+ input_set_abs_params(pxrc->input, ABS_RY, 0, 255, 0, 0);
+ input_set_abs_params(pxrc->input, ABS_RUDDER, 0, 255, 0, 0);
+ input_set_abs_params(pxrc->input, ABS_THROTTLE, 0, 255, 0, 0);
+ input_set_abs_params(pxrc->input, ABS_MISC, 0, 255, 0, 0);
+
+ input_set_drvdata(pxrc->input, pxrc);
+
+ error = input_register_device(pxrc->input);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static void pxrc_disconnect(struct usb_interface *intf)
+{
+ /* All driver resources are devm-managed. */
+}
+
+static int pxrc_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct pxrc *pxrc = usb_get_intfdata(intf);
+
+ mutex_lock(&pxrc->pm_mutex);
+ if (pxrc->is_open)
+ usb_kill_urb(pxrc->urb);
+ mutex_unlock(&pxrc->pm_mutex);
+
+ return 0;
+}
+
+static int pxrc_resume(struct usb_interface *intf)
+{
+ struct pxrc *pxrc = usb_get_intfdata(intf);
+ int retval = 0;
+
+ mutex_lock(&pxrc->pm_mutex);
+ if (pxrc->is_open && usb_submit_urb(pxrc->urb, GFP_KERNEL) < 0)
+ retval = -EIO;
+
+ mutex_unlock(&pxrc->pm_mutex);
+ return retval;
+}
+
+static int pxrc_pre_reset(struct usb_interface *intf)
+{
+ struct pxrc *pxrc = usb_get_intfdata(intf);
+
+ mutex_lock(&pxrc->pm_mutex);
+ usb_kill_urb(pxrc->urb);
+ return 0;
+}
+
+static int pxrc_post_reset(struct usb_interface *intf)
+{
+ struct pxrc *pxrc = usb_get_intfdata(intf);
+ int retval = 0;
+
+ if (pxrc->is_open && usb_submit_urb(pxrc->urb, GFP_KERNEL) < 0)
+ retval = -EIO;
+
+ mutex_unlock(&pxrc->pm_mutex);
+
+ return retval;
+}
+
+static int pxrc_reset_resume(struct usb_interface *intf)
+{
+ return pxrc_resume(intf);
+}
+
+static const struct usb_device_id pxrc_table[] = {
+ { USB_DEVICE(PXRC_VENDOR_ID, PXRC_PRODUCT_ID) },
+ { }
+};
+MODULE_DEVICE_TABLE(usb, pxrc_table);
+
+static struct usb_driver pxrc_driver = {
+ .name = "pxrc",
+ .probe = pxrc_probe,
+ .disconnect = pxrc_disconnect,
+ .id_table = pxrc_table,
+ .suspend = pxrc_suspend,
+ .resume = pxrc_resume,
+ .pre_reset = pxrc_pre_reset,
+ .post_reset = pxrc_post_reset,
+ .reset_resume = pxrc_reset_resume,
+};
+
+module_usb_driver(pxrc_driver);
+
+MODULE_AUTHOR("Marcus Folkesson <marcus.folkesson@gmail.com>");
+MODULE_DESCRIPTION("PhoenixRC Flight Controller Adapter");
+MODULE_LICENSE("GPL v2");