openinput: add barebones driver

This is the minimal code required to have a working driver, now we just
need a .device file.

Note the hardcoding of `profile->is_active = true` in
openinput_read_profile, this works because we just have one profile.

Signed-off-by: Filipe Laíns <lains@riseup.net>

meson.build

@@ -174,6 +174,7 @@ src_libratbag = [
 	'src/driver-roccat.c',
 	'src/driver-roccat-kone-pure.c',
 	'src/driver-gskill.c',
+	'src/driver-openinput.c',
 	'src/driver-steelseries.c',
 	'src/driver-sinowealth.c',
 	'src/driver-sinowealth-nubwo.c',

src/driver-openinput.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright © 2021 Filipe Laíns
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#include "libratbag-private.h"
+
+static unsigned int report_rates[] = { 125, 250, 500, 750, 1000 };
+
+struct openinput_drv_data {
+	unsigned int num_profiles;
+	unsigned int num_resolutions;
+	unsigned int num_buttons;
+	unsigned int num_leds;
+};
+
+static void
+openinput_read_profile(struct ratbag_profile *profile)
+{
+	ratbag_profile_set_report_rate_list(profile, report_rates, sizeof(*report_rates));
+	profile->is_active = true;
+}
+
+static int
+openinput_probe(struct ratbag_device *device)
+{
+	struct openinput_drv_data *drv_data;
+	struct ratbag_profile *profile;
+
+	drv_data = zalloc(sizeof(*drv_data));
+
+	drv_data->num_profiles = 1;
+
+	ratbag_set_drv_data(device, drv_data);
+	ratbag_device_init_profiles(device,
+				    drv_data->num_profiles,
+				    drv_data->num_resolutions,
+				    drv_data->num_buttons,
+				    drv_data->num_leds);
+
+	ratbag_device_for_each_profile(device, profile)
+		openinput_read_profile(profile);
+
+	return 0;
+}
+
+static void
+openinput_remove(struct ratbag_device *device)
+{
+	ratbag_close_hidraw(device);
+	free(ratbag_get_drv_data(device));
+}
+
+struct ratbag_driver openinput_driver = {
+	.name = "openinput",
+	.id = "openinput",
+	.probe = openinput_probe,
+	.remove = openinput_remove,
+};

src/libratbag-data.c

@@ -54,6 +54,7 @@ enum driver {
 	STEELSERIES,
 	SINOWEALTH,
 	SINOWEALTH_NUBWO,
+	OPENINPUT,
 };
 
 struct data_hidpp20 {
@@ -272,6 +273,7 @@ static const struct driver_map {
 	{ STEELSERIES, "steelseries", init_data_steelseries },
 	{ SINOWEALTH, "sinowealth", NULL },
 	{ SINOWEALTH_NUBWO, "sinowealth_nubwo", NULL},
+	{ OPENINPUT, "openinput", NULL },
 };
 
 const char *

src/libratbag-private.h

@@ -597,6 +597,7 @@ extern struct ratbag_driver gskill_driver;
 extern struct ratbag_driver steelseries_driver;
 extern struct ratbag_driver sinowealth_driver;
 extern struct ratbag_driver sinowealth_nubwo_driver;
+extern struct ratbag_driver openinput_driver;
 
 struct ratbag_device*
 ratbag_device_new(struct ratbag *ratbag, struct udev_device *udev_device,

src/libratbag.c

@@ -604,6 +604,7 @@ ratbag_create_context(const struct ratbag_interface *interface,
 	ratbag_register_driver(ratbag, &steelseries_driver);
 	ratbag_register_driver(ratbag, &sinowealth_driver);
 	ratbag_register_driver(ratbag, &sinowealth_nubwo_driver);
+	ratbag_register_driver(ratbag, &openinput_driver);
 
 	return ratbag;
 }