[PATCH] HID: Add driver for PhoenixRC Flight Controller
From: Marcus Folkesson
Date: Wed Sep 14 2022 - 14:38:18 EST
The PhoenixRC is a controller with 8 channels for use in flight
simulators.
Signed-off-by: Marcus Folkesson <marcus.folkesson@xxxxxxxxx>
---
MAINTAINERS | 6 +++
drivers/hid/Kconfig | 9 ++++
drivers/hid/Makefile | 1 +
drivers/hid/hid-ids.h | 1 +
drivers/hid/hid-pxrc.c | 112 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 129 insertions(+)
create mode 100644 drivers/hid/hid-pxrc.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 64379c699903..2f70b7d2b4b9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8907,6 +8907,12 @@ L: linux-input@xxxxxxxxxxxxxxx
S: Supported
F: drivers/hid/hid-playstation.c
+HID PHOENIX RC FLIGHT CONTROLLER
+M: Marcus Folkesson <marcus.folkesson@xxxxxxxxx>
+L: linux-input@xxxxxxxxxxxxxxx
+S: Maintained
+F: drivers/hid/hid-pxrc.c
+
HID SENSOR HUB DRIVERS
M: Jiri Kosina <jikos@xxxxxxxxxx>
M: Jonathan Cameron <jic23@xxxxxxxxxx>
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 70da5931082f..8ca58141d5be 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -950,6 +950,15 @@ config PLAYSTATION_FF
Say Y here if you would like to enable force feedback support for
PlayStation game controllers.
+config HID_PXRC
+ tristate "PhoenixRC HID Flight Controller"
+ depends on HID
+ help
+ Support for PhoenixRC HID Flight Controller, a 8-axis flight controller.
+
+ To compile this driver as a module, choose M here: the
+ module will be called hid-pxrc.
+
config HID_RAZER
tristate "Razer non-fully HID-compliant devices"
depends on HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index cac2cbe26d11..b3748b97d5b5 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -101,6 +101,7 @@ hid-picolcd-$(CONFIG_DEBUG_FS) += hid-picolcd_debugfs.o
obj-$(CONFIG_HID_PLANTRONICS) += hid-plantronics.o
obj-$(CONFIG_HID_PLAYSTATION) += hid-playstation.o
obj-$(CONFIG_HID_PRIMAX) += hid-primax.o
+obj-$(CONFIG_HID_PXRC) += hid-pxrc.o
obj-$(CONFIG_HID_RAZER) += hid-razer.o
obj-$(CONFIG_HID_REDRAGON) += hid-redragon.o
obj-$(CONFIG_HID_RETRODE) += hid-retrode.o
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index d9eb676abe96..30ac56cb238b 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -1381,6 +1381,7 @@
#define USB_VENDOR_ID_MULTIPLE_1781 0x1781
#define USB_DEVICE_ID_RAPHNET_4NES4SNES_OLD 0x0a9d
+#define USB_DEVICE_ID_PHOENIXRC 0x0898
#define USB_VENDOR_ID_DRACAL_RAPHNET 0x289b
#define USB_DEVICE_ID_RAPHNET_2NES2SNES 0x0002
diff --git a/drivers/hid/hid-pxrc.c b/drivers/hid/hid-pxrc.c
new file mode 100644
index 000000000000..b0e517f9cde7
--- /dev/null
+++ b/drivers/hid/hid-pxrc.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HID driver for PhoenixRC 8-axis flight controller
+ *
+ * Copyright (C) 2022 Marcus Folkesson <marcus.folkesson@xxxxxxxxx>
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+struct pxrc_priv {
+ u8 slider;
+ u8 dial;
+ bool alternate;
+};
+
+static __u8 pxrc_rdesc_fixed[] = {
+ 0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
+ 0x09, 0x04, // Usage (Joystick)
+ 0xA1, 0x01, // Collection (Application)
+ 0x09, 0x01, // Usage (Pointer)
+ 0xA1, 0x00, // Collection (Physical)
+ 0x09, 0x30, // Usage (X)
+ 0x09, 0x36, // Usage (Slider)
+ 0x09, 0x31, // Usage (Y)
+ 0x09, 0x32, // Usage (Z)
+ 0x09, 0x33, // Usage (Rx)
+ 0x09, 0x34, // Usage (Ry)
+ 0x09, 0x35, // Usage (Rz)
+ 0x09, 0x37, // Usage (Dial)
+ 0x15, 0x00, // Logical Minimum (0)
+ 0x26, 0xFF, 0x00, // Logical Maximum (255)
+ 0x35, 0x00, // Physical Minimum (0)
+ 0x46, 0xFF, 0x00, // Physical Maximum (255)
+ 0x75, 0x08, // Report Size (8)
+ 0x95, 0x08, // Report Count (8)
+ 0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
+ 0xC0, // End Collection
+ 0xC0, // End Collection
+};
+
+static __u8 *pxrc_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ hid_info(hdev, "fixing up PXRC report descriptor\n");
+ *rsize = sizeof(pxrc_rdesc_fixed);
+ return pxrc_rdesc_fixed;
+}
+
+static int pxrc_raw_event(struct hid_device *hdev, struct hid_report *report,
+ u8 *data, int size)
+{
+ struct pxrc_priv *priv = hid_get_drvdata(hdev);
+
+ if (priv->alternate)
+ priv->slider = data[7];
+ else
+ priv->dial = data[7];
+
+ data[1] = priv->slider;
+ data[7] = priv->dial;
+
+ priv->alternate = !priv->alternate;
+ return 0;
+}
+
+static int pxrc_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret;
+ struct pxrc_priv *priv;
+
+ priv = devm_kzalloc(&hdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+ hid_set_drvdata(hdev, priv);
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "parse failed\n");
+ return ret;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (ret) {
+ hid_err(hdev, "hw start failed\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct hid_device_id pxrc_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_MULTIPLE_1781, USB_DEVICE_ID_PHOENIXRC) },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(hid, pxrc_devices);
+
+static struct hid_driver pxrc_driver = {
+ .name = "hid-pxrc",
+ .id_table = pxrc_devices,
+ .report_fixup = pxrc_report_fixup,
+ .probe = pxrc_probe,
+ .raw_event = pxrc_raw_event,
+};
+module_hid_driver(pxrc_driver);
+
+MODULE_AUTHOR("Marcus Folkesson <marcus.folkesson@xxxxxxxxx>");
+MODULE_DESCRIPTION("HID driver for PXRC 8-axis flight controller");
+MODULE_LICENSE("GPL");
--
2.37.1