Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 156 insertions, 0 deletions

diff --git a/drivers/hid/hid-lgff.c b/drivers/hid/hid-lgff.c
new file mode 100644
index 000000000..aed4ddc39
--- /dev/null
+++ b/drivers/hid/hid-lgff.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Force feedback support for hid-compliant for some of the devices from
+ * Logitech, namely:
+ * - WingMan Cordless RumblePad
+ * - WingMan Force 3D
+ *
+ *  Copyright (c) 2002-2004 Johann Deneux
+ *  Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
+ */
+
+/*
+ *
+ * Should you need to contact me, the author, you can do so by
+ * e-mail - mail your message to <johann.deneux@it.uu.se>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/input.h>
+#include <linux/hid.h>
+
+#include "hid-lg.h"
+
+struct dev_type {
+	u16 idVendor;
+	u16 idProduct;
+	const signed short *ff;
+};
+
+static const signed short ff_rumble[] = {
+	FF_RUMBLE,
+	-1
+};
+
+static const signed short ff_joystick[] = {
+	FF_CONSTANT,
+	-1
+};
+
+static const signed short ff_joystick_ac[] = {
+	FF_CONSTANT,
+	FF_AUTOCENTER,
+	-1
+};
+
+static const struct dev_type devices[] = {
+	{ 0x046d, 0xc211, ff_rumble },
+	{ 0x046d, 0xc219, ff_rumble },
+	{ 0x046d, 0xc283, ff_joystick },
+	{ 0x046d, 0xc286, ff_joystick_ac },
+	{ 0x046d, 0xc287, ff_joystick_ac },
+	{ 0x046d, 0xc293, ff_joystick },
+	{ 0x046d, 0xc295, ff_joystick },
+};
+
+static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
+{
+	struct hid_device *hid = input_get_drvdata(dev);
+	struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
+	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
+	int x, y;
+	unsigned int left, right;
+
+#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
+
+	switch (effect->type) {
+	case FF_CONSTANT:
+		x = effect->u.ramp.start_level + 0x7f;	/* 0x7f is center */
+		y = effect->u.ramp.end_level + 0x7f;
+		CLAMP(x);
+		CLAMP(y);
+		report->field[0]->value[0] = 0x51;
+		report->field[0]->value[1] = 0x08;
+		report->field[0]->value[2] = x;
+		report->field[0]->value[3] = y;
+		dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
+		hid_hw_request(hid, report, HID_REQ_SET_REPORT);
+		break;
+
+	case FF_RUMBLE:
+		right = effect->u.rumble.strong_magnitude;
+		left = effect->u.rumble.weak_magnitude;
+		right = right * 0xff / 0xffff;
+		left = left * 0xff / 0xffff;
+		CLAMP(left);
+		CLAMP(right);
+		report->field[0]->value[0] = 0x42;
+		report->field[0]->value[1] = 0x00;
+		report->field[0]->value[2] = left;
+		report->field[0]->value[3] = right;
+		dbg_hid("(left, right)=(%04x, %04x)\n", left, right);
+		hid_hw_request(hid, report, HID_REQ_SET_REPORT);
+		break;
+	}
+	return 0;
+}
+
+static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
+{
+	struct hid_device *hid = input_get_drvdata(dev);
+	struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
+	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
+	__s32 *value = report->field[0]->value;
+	magnitude = (magnitude >> 12) & 0xf;
+	*value++ = 0xfe;
+	*value++ = 0x0d;
+	*value++ = magnitude;   /* clockwise strength */
+	*value++ = magnitude;   /* counter-clockwise strength */
+	*value++ = 0x80;
+	*value++ = 0x00;
+	*value = 0x00;
+	hid_hw_request(hid, report, HID_REQ_SET_REPORT);
+}
+
+int lgff_init(struct hid_device* hid)
+{
+	struct hid_input *hidinput;
+	struct input_dev *dev;
+	const signed short *ff_bits = ff_joystick;
+	int error;
+	int i;
+
+	if (list_empty(&hid->inputs)) {
+		hid_err(hid, "no inputs found\n");
+		return -ENODEV;
+	}
+	hidinput = list_entry(hid->inputs.next, struct hid_input, list);
+	dev = hidinput->input;
+
+	/* Check that the report looks ok */
+	if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7))
+		return -ENODEV;
+
+	for (i = 0; i < ARRAY_SIZE(devices); i++) {
+		if (dev->id.vendor == devices[i].idVendor &&
+		    dev->id.product == devices[i].idProduct) {
+			ff_bits = devices[i].ff;
+			break;
+		}
+	}
+
+	for (i = 0; ff_bits[i] >= 0; i++)
+		set_bit(ff_bits[i], dev->ffbit);
+
+	error = input_ff_create_memless(dev, NULL, hid_lgff_play);
+	if (error)
+		return error;
+
+	if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
+		dev->ff->set_autocenter = hid_lgff_set_autocenter;
+
+	pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
+
+	return 0;
+}