13b2e1ba48
This driver does 2 things: - Apply the MULTI_INPUT quirk to create separate joypad device nodes for each one of the 4 connectors. - Rename the input devices so that their names are different, and allow users to recognise which device corresponds to which physical port, including the SNES (Mario Paint) Mouse. Signed-off-by: Bastien Nocera <hadess@hadess.net> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
/*
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* HID driver for Retrode 2 controller adapter and plug-in extensions
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*
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* Copyright (c) 2017 Bastien Nocera <hadess@hadess.net>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/input.h>
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#include <linux/slab.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include "hid-ids.h"
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#define CONTROLLER_NAME_BASE "Retrode"
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static int retrode_input_configured(struct hid_device *hdev,
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struct hid_input *hi)
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{
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struct hid_field *field = hi->report->field[0];
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const char *suffix;
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int number = 0;
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char *name;
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switch (field->report->id) {
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case 0:
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suffix = "SNES Mouse";
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break;
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case 1:
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case 2:
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suffix = "SNES / N64";
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number = field->report->id;
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break;
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case 3:
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case 4:
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suffix = "Mega Drive";
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number = field->report->id - 2;
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break;
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default:
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hid_err(hdev, "Got unhandled report id %d\n", field->report->id);
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suffix = "Unknown";
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}
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if (number)
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name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
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"%s %s #%d", CONTROLLER_NAME_BASE,
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suffix, number);
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else
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name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
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"%s %s", CONTROLLER_NAME_BASE, suffix);
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if (!name)
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return -ENOMEM;
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hi->input->name = name;
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return 0;
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}
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static int retrode_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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int ret;
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/* Has no effect on the mouse device */
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hdev->quirks |= HID_QUIRK_MULTI_INPUT;
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ret = hid_parse(hdev);
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if (ret)
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return ret;
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (ret)
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return ret;
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return 0;
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}
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static const struct hid_device_id retrode_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, retrode_devices);
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static struct hid_driver retrode_driver = {
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.name = "hid-retrode",
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.id_table = retrode_devices,
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.input_configured = retrode_input_configured,
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.probe = retrode_probe,
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};
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module_hid_driver(retrode_driver);
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MODULE_LICENSE("GPL");
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