bpf/progs/XPPen__ArtistPro16Gen2.bpf.c

1 // SPDX-License-Identifier: GPL-2.0-only
23  * - the device reports Eraser instead of using Secondary Barrel Switch
24  * - when the eraser button is pressed and the stylus is touching the tablet,
40 …        //   Usage (Eraser)                    16  /* created over a padding bit at offset 29-33 */
60 	0x55, 0x0d,                    //   Unit Exponent (-3)                61
74 	0x15, 0x81,                    //   Logical Minimum (-127)            93
80 	0x15, 0x81,                    //   Logical Minimum (-127)            105
100 	if (hctx->hid->product == PID_ARTIST_PRO14_GEN2) {  in SEC()
105 	} else if (hctx->hid->product == PID_ARTIST_PRO19_GEN2) {  in SEC()
126 	/* xor bits 0,3 and 4: convert Tip Switch + Invert into Eraser only */  in xppen_16_fix_eraser()
146 	0, 3, 5, 8, 11, 13, 16, 19, 21, 24, 27, 29, 32, 35, 37, 40, 42, 45, 47, 50, 53,
149 	129, 130, 132, 133, 134, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146,
152 	148, 148, 147, 146, 145, 144, 143, 142, 141, 140, 139, 138, 137, 136, 134, 133,
157 	88, 92, 96, 100, 104, 108, 112, 115, 119, 123, 127, 130, 134, 137, 141, 145, 148,
201 	129, 132, 135, 137, 140, 142, 145, 147, 150, 152, 154, 157, 159, 161, 163, 165, 167,
218 	__u8 angle = tilt > 0 ? tilt : -tilt;  in compensate_coordinates_by_tilt()
226 		coords = (coords > compensation) ? coords - compensation : 0;  in compensate_coordinates_by_tilt()
229 		__u16 max = logical_maximum - compensation;  in compensate_coordinates_by_tilt()
261 	 * bytes 0   - report id  in xppen_16_fix_angle_offset()
262 	 *       1   - buttons  in xppen_16_fix_angle_offset()
263 	 *       2-3 - X coords (logical)  in xppen_16_fix_angle_offset()
264 	 *       4-5 - Y coords  in xppen_16_fix_angle_offset()
265 	 *       6-7 - pressure (ignore)  in xppen_16_fix_angle_offset()
266 	 *       8   - tilt X  in xppen_16_fix_angle_offset()
267 	 *       9   - tilt Y  in xppen_16_fix_angle_offset()
273 	switch (hctx->hid->product) {  in xppen_16_fix_angle_offset()
311 	 * The device exports 3 interfaces.  in probe()
313 	ctx->retval = ctx->rdesc_size != 113;  in probe()
314 	if (ctx->retval)  in probe()
315 		ctx->retval = -EINVAL;  in probe()
318 	if (ctx->rdesc[17] != 0x45) /* Eraser */  in probe()
319 		ctx->retval = -EINVAL;  in probe()