HID: Add driver fixing Glorious PC Gaming Race mouse report descriptor

The Glorious Model O mice (and also at least the Model O-, which is
driver-wise the same mouse) have a bug in the descriptor of HID
Report with ID 2. This report is used for Consumer Control buttons,
which can be mapped using the provided Windows only software.

Here is an excerpt from the original descriptor:

  INPUT(2)[INPUT]
    Field(0)
      Flags( Constant Variable Absolute )
    Field(1)
      Flags( Constant Variable Absolute )
    Field(2)
      Flags( Constant Variable Absolute )

The issue is the Constant flag specified on all 3 fields, which
causes the hid driver to ignore changes in these fields and
essentialy causes the buttons to not work at all. The submitted driver
patches the descriptor to end up with the following:

  INPUT(2)[INPUT]
    Field(0)
      Flags( Variable Relative )
    Field(1)
      Flags( Variable Relative )
    Field(2)
      Flags( Variable Relative )

The Constant bit is reset and the Relative bit has been set in
order to prevent repeat events when holding down the button.

Additionally, the device name is changed from the hardware-reported
"SINOWEALTH Wired Gaming Mouse" to "Glorious Model O" or "Glorious
Model D".

Signed-off-by: Samuel Čavoj <sammko@sammserver.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 494a39e7493990b577404964f747c4d3c1849251..945533b36010938bf60d2b55cb44c5906c402b16 100644 (file)
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -362,6 +362,13 @@ config HID_GFRM
        ---help---
        Support for Google Fiber TV Box remote controls
 
+config HID_GLORIOUS
+       tristate "Glorious PC Gaming Race mice"
+       depends on HID
+       help
+         Support for Glorious PC Gaming Race mice such as
+         the Glorious Model O, O- and D.
+
 config HID_HOLTEK
        tristate "Holtek HID devices"
        depends on USB_HID

diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index bfefa365b1ced1a95beefa1c1b75efcfbf895b05..be0f38dcf942d1f19cd8880574e5bd934cddc011 100644 (file)
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_HID_ELO)         += hid-elo.o
 obj-$(CONFIG_HID_EZKEY)                += hid-ezkey.o
 obj-$(CONFIG_HID_GEMBIRD)      += hid-gembird.o
 obj-$(CONFIG_HID_GFRM)         += hid-gfrm.o
+obj-$(CONFIG_HID_GLORIOUS)  += hid-glorious.o
 obj-$(CONFIG_HID_GOOGLE_HAMMER)        += hid-google-hammer.o
 obj-$(CONFIG_HID_GT683R)       += hid-gt683r.o
 obj-$(CONFIG_HID_GYRATION)     += hid-gyration.o

diff --git a/drivers/hid/hid-glorious.c b/drivers/hid/hid-glorious.c
new file mode 100644 (file)
index 0000000..558eb08
--- /dev/null
+++ b/drivers/hid/hid-glorious.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  USB HID driver for Glorious PC Gaming Race
+ *  Glorious Model O, O- and D mice.
+ *
+ *  Copyright (c) 2020 Samuel Čavoj <sammko@sammserver.com>
+ */
+
+/*
+ */
+
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+MODULE_AUTHOR("Samuel Čavoj <sammko@sammserver.com>");
+MODULE_DESCRIPTION("HID driver for Glorious PC Gaming Race mice");
+
+/*
+ * Glorious Model O and O- specify the const flag in the consumer input
+ * report descriptor, which leads to inputs being ignored. Fix this
+ * by patching the descriptor.
+ */
+static __u8 *glorious_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+               unsigned int *rsize)
+{
+       if (*rsize == 213 &&
+               rdesc[84] == 129 && rdesc[112] == 129 && rdesc[140] == 129 &&
+               rdesc[85] == 3   && rdesc[113] == 3   && rdesc[141] == 3) {
+               hid_info(hdev, "patching Glorious Model O consumer control report descriptor\n");
+               rdesc[85] = rdesc[113] = rdesc[141] = \
+                       HID_MAIN_ITEM_VARIABLE | HID_MAIN_ITEM_RELATIVE;
+       }
+       return rdesc;
+}
+
+static void glorious_update_name(struct hid_device *hdev)
+{
+       const char *model = "Device";
+
+       switch (hdev->product) {
+       case USB_DEVICE_ID_GLORIOUS_MODEL_O:
+               model = "Model O"; break;
+       case USB_DEVICE_ID_GLORIOUS_MODEL_D:
+               model = "Model D"; break;
+       }
+
+       snprintf(hdev->name, sizeof(hdev->name), "%s %s", "Glorious", model);
+}
+
+static int glorious_probe(struct hid_device *hdev,
+               const struct hid_device_id *id)
+{
+       int ret;
+
+       hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
+
+       ret = hid_parse(hdev);
+       if (ret)
+               return ret;
+
+       glorious_update_name(hdev);
+
+       return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+}
+
+static const struct hid_device_id glorious_devices[] = {
+       { HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS,
+               USB_DEVICE_ID_GLORIOUS_MODEL_O) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS,
+               USB_DEVICE_ID_GLORIOUS_MODEL_D) },
+       { }
+};
+MODULE_DEVICE_TABLE(hid, glorious_devices);
+
+static struct hid_driver glorious_driver = {
+       .name = "glorious",
+       .id_table = glorious_devices,
+       .probe = glorious_probe,
+       .report_fixup = glorious_report_fixup
+};
+
+module_hid_driver(glorious_driver);
+
+MODULE_LICENSE("GPL");

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 9f2213426556544a3db34081d9871b5633147c4a..54474205b12c6a9ab3ee9facd2e715aa6f7cda28 100644 (file)
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -464,6 +464,10 @@
 #define USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A 0x010a
 #define USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100 0xe100
 
+#define USB_VENDOR_ID_GLORIOUS  0x258a
+#define USB_DEVICE_ID_GLORIOUS_MODEL_D 0x0033
+#define USB_DEVICE_ID_GLORIOUS_MODEL_O 0x0036
+
 #define I2C_VENDOR_ID_GOODIX           0x27c6
 #define I2C_DEVICE_ID_GOODIX_01F0      0x01f0