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Commit 13b2e1ba authored by Bastien Nocera's avatar Bastien Nocera Committed by Jiri Kosina
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HID: Add driver for Retrode2 joypad adapter 



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: default avatarBastien Nocera <hadess@hadess.net>
Reviewed-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent db1b5ccd

drivers/hid/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -741,6 +741,14 @@ config HID_PRIMAX 
	Support for Primax devices that are not fully compliant with the

	HID standard.



config HID_RETRODE

	tristate "Retrode"

	depends on USB_HID

	---help---

	Support for



	  * Retrode 2 cartridge and controller adapter



config HID_ROCCAT

	tristate "Roccat device support"

	depends on USB_HID

drivers/hid/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ hid-picolcd-$(CONFIG_DEBUG_FS) += hid-picolcd_debugfs.o 


obj-$(CONFIG_HID_PLANTRONICS)	+= hid-plantronics.o

obj-$(CONFIG_HID_PRIMAX)	+= hid-primax.o

obj-$(CONFIG_HID_RETRODE)	+= hid-retrode.o

obj-$(CONFIG_HID_ROCCAT)	+= hid-roccat.o hid-roccat-common.o \

	hid-roccat-arvo.o hid-roccat-isku.o hid-roccat-kone.o \

	hid-roccat-koneplus.o hid-roccat-konepure.o hid-roccat-kovaplus.o \

drivers/hid/hid-core.c

+3 −0
Original line number Diff line number Diff line
@@ -2151,6 +2151,9 @@ static const struct hid_device_id hid_have_special_driver[] = { 
#if IS_ENABLED(CONFIG_HID_PRODIKEYS)

	{ HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },

#endif

#if IS_ENABLED(CONFIG_HID_RETRODE)

	{ HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) },

#endif

#if IS_ENABLED(CONFIG_HID_RMI)

	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_COVER) },

	{ HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14) },

drivers/hid/hid-ids.h

+3 −0
Original line number Diff line number Diff line
@@ -386,6 +386,9 @@ 
#define USB_VENDOR_ID_FUTABA            0x0547

#define USB_DEVICE_ID_LED_DISPLAY       0x7000



#define USB_VENDOR_ID_FUTURE_TECHNOLOGY	0x0403

#define USB_DEVICE_ID_RETRODE2		0x97c1



#define USB_VENDOR_ID_ESSENTIAL_REALITY	0x0d7f

#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100

drivers/hid/hid-retrode.c

0 → 100644
+100 −0
Original line number Diff line number Diff line 
/*

 *  HID driver for Retrode 2 controller adapter and plug-in extensions

 *

 *  Copyright (c) 2017 Bastien Nocera <hadess@hadess.net>

 */



/*

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 */



#include <linux/input.h>

#include <linux/slab.h>

#include <linux/hid.h>

#include <linux/module.h>

#include "hid-ids.h"



#define CONTROLLER_NAME_BASE "Retrode"



static int retrode_input_configured(struct hid_device *hdev,

					struct hid_input *hi)

{

	struct hid_field *field = hi->report->field[0];

	const char *suffix;

	int number = 0;

	char *name;



	switch (field->report->id) {

	case 0:

		suffix = "SNES Mouse";

		break;

	case 1:

	case 2:

		suffix = "SNES / N64";

		number = field->report->id;

		break;

	case 3:

	case 4:

		suffix = "Mega Drive";

		number = field->report->id - 2;

		break;

	default:

		hid_err(hdev, "Got unhandled report id %d\n", field->report->id);

		suffix = "Unknown";

	}



	if (number)

		name = devm_kasprintf(&hdev->dev, GFP_KERNEL,

				"%s %s #%d", CONTROLLER_NAME_BASE,

				suffix, number);

	else

		name = devm_kasprintf(&hdev->dev, GFP_KERNEL,

				"%s %s", CONTROLLER_NAME_BASE, suffix);



	if (!name)

		return -ENOMEM;



	hi->input->name = name;



	return 0;

}



static int retrode_probe(struct hid_device *hdev,

			const struct hid_device_id *id)

{



	int ret;



	/* Has no effect on the mouse device */

	hdev->quirks |= HID_QUIRK_MULTI_INPUT;



	ret = hid_parse(hdev);

	if (ret)

		return ret;



	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);

	if (ret)

		return ret;



	return 0;

}



static const struct hid_device_id retrode_devices[] = {

	{ HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) },

	{ }

};

MODULE_DEVICE_TABLE(hid, retrode_devices);



static struct hid_driver retrode_driver = {

	.name             = "hid-retrode",

	.id_table         = retrode_devices,

	.input_configured = retrode_input_configured,

	.probe            = retrode_probe,

};



module_hid_driver(retrode_driver);



MODULE_LICENSE("GPL");