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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/hid/hid-gembird.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/hid/hid-gembird.c')
-rw-r--r--drivers/hid/hid-gembird.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/hid/hid-gembird.c b/drivers/hid/hid-gembird.c
new file mode 100644
index 000000000..20a8de766
--- /dev/null
+++ b/drivers/hid/hid-gembird.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HID driver for Gembird Joypad, "PC Game Controller"
+ *
+ * Copyright (c) 2015 Red Hat, Inc
+ * Copyright (c) 2015 Benjamin Tissoires
+ */
+
+/*
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#define GEMBIRD_START_FAULTY_RDESC 8
+
+static const __u8 gembird_jpd_faulty_rdesc[] = {
+ 0x75, 0x08, /* Report Size (8) */
+ 0x95, 0x05, /* Report Count (5) */
+ 0x15, 0x00, /* Logical Minimum (0) */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255) */
+ 0x35, 0x00, /* Physical Minimum (0) */
+ 0x46, 0xff, 0x00, /* Physical Maximum (255) */
+ 0x09, 0x30, /* Usage (X) */
+ 0x09, 0x31, /* Usage (Y) */
+ 0x09, 0x32, /* Usage (Z) */
+ 0x09, 0x32, /* Usage (Z) */
+ 0x09, 0x35, /* Usage (Rz) */
+ 0x81, 0x02, /* Input (Data,Var,Abs) */
+};
+
+/*
+ * we fix the report descriptor by:
+ * - marking the first Z axis as constant (so it is ignored by HID)
+ * - assign the original second Z to Rx
+ * - assign the original Rz to Ry
+ */
+static const __u8 gembird_jpd_fixed_rdesc[] = {
+ 0x75, 0x08, /* Report Size (8) */
+ 0x95, 0x02, /* Report Count (2) */
+ 0x15, 0x00, /* Logical Minimum (0) */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255) */
+ 0x35, 0x00, /* Physical Minimum (0) */
+ 0x46, 0xff, 0x00, /* Physical Maximum (255) */
+ 0x09, 0x30, /* Usage (X) */
+ 0x09, 0x31, /* Usage (Y) */
+ 0x81, 0x02, /* Input (Data,Var,Abs) */
+ 0x95, 0x01, /* Report Count (1) */
+ 0x09, 0x32, /* Usage (Z) */
+ 0x81, 0x01, /* Input (Cnst,Arr,Abs) */
+ 0x95, 0x02, /* Report Count (2) */
+ 0x09, 0x33, /* Usage (Rx) */
+ 0x09, 0x34, /* Usage (Ry) */
+ 0x81, 0x02, /* Input (Data,Var,Abs) */
+};
+
+static const __u8 *gembird_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ __u8 *new_rdesc;
+ /* delta_size is > 0 */
+ size_t delta_size = sizeof(gembird_jpd_fixed_rdesc) -
+ sizeof(gembird_jpd_faulty_rdesc);
+ size_t new_size = *rsize + delta_size;
+
+ if (*rsize >= 31 && !memcmp(&rdesc[GEMBIRD_START_FAULTY_RDESC],
+ gembird_jpd_faulty_rdesc,
+ sizeof(gembird_jpd_faulty_rdesc))) {
+ new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
+ if (new_rdesc == NULL)
+ return rdesc;
+
+ dev_info(&hdev->dev,
+ "fixing Gembird JPD-DualForce 2 report descriptor.\n");
+
+ /* start by copying the end of the rdesc */
+ memcpy(new_rdesc + delta_size, rdesc, *rsize);
+
+ /* add the correct beginning */
+ memcpy(new_rdesc, rdesc, GEMBIRD_START_FAULTY_RDESC);
+
+ /* replace the faulty part with the fixed one */
+ memcpy(new_rdesc + GEMBIRD_START_FAULTY_RDESC,
+ gembird_jpd_fixed_rdesc,
+ sizeof(gembird_jpd_fixed_rdesc));
+
+ *rsize = new_size;
+ rdesc = new_rdesc;
+ }
+
+ return rdesc;
+}
+
+static const struct hid_device_id gembird_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD,
+ USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, gembird_devices);
+
+static struct hid_driver gembird_driver = {
+ .name = "gembird",
+ .id_table = gembird_devices,
+ .report_fixup = gembird_report_fixup,
+};
+module_hid_driver(gembird_driver);
+
+MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
+MODULE_DESCRIPTION("HID Gembird joypad driver");
+MODULE_LICENSE("GPL");