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2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87 
 kernel/drivers/media/usb/uvc/uvc_driver.c
....@@ -1,14 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *      uvc_driver.c  --  USB Video Class driver
34  *
45  *      Copyright (C) 2005-2010
56  *          Laurent Pinchart (laurent.pinchart@ideasonboard.com)
6
- *
7
- *      This program is free software; you can redistribute it and/or modify
8
- *      it under the terms of the GNU General Public License as published by
9
- *      the Free Software Foundation; either version 2 of the License, or
10
- *      (at your option) any later version.
11
- *
127  */
138 
149 #include <linux/atomic.h>
....@@ -220,6 +215,16 @@
220215 		.guid		= UVC_GUID_FORMAT_INZI,
221216 		.fcc		= V4L2_PIX_FMT_INZI,
222217 	},
218
+	{
219
+		.name		= "4-bit Depth Confidence (Packed)",
220
+		.guid		= UVC_GUID_FORMAT_CNF4,
221
+		.fcc		= V4L2_PIX_FMT_CNF4,
222
+	},
223
+	{
224
+		.name		= "HEVC",
225
+		.guid		= UVC_GUID_FORMAT_HEVC,
226
+		.fcc		= V4L2_PIX_FMT_HEVC,
227
+	},
223228 };
224229 
225230 /* ------------------------------------------------------------------------
....@@ -254,10 +259,10 @@
254259 	return NULL;
255260 }
256261 
257
-static u32 uvc_colorspace(const u8 primaries)
262
+static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
258263 {
259
-	static const u8 colorprimaries[] = {
260
-		0,
264
+	static const enum v4l2_colorspace colorprimaries[] = {
265
+		V4L2_COLORSPACE_DEFAULT,  /* Unspecified */
261266 		V4L2_COLORSPACE_SRGB,
262267 		V4L2_COLORSPACE_470_SYSTEM_M,
263268 		V4L2_COLORSPACE_470_SYSTEM_BG,
....@@ -268,7 +273,61 @@
268273 	if (primaries < ARRAY_SIZE(colorprimaries))
269274 		return colorprimaries[primaries];
270275 
271
-	return 0;
276
+	return V4L2_COLORSPACE_DEFAULT;  /* Reserved */
277
+}
278
+
279
+static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
280
+{
281
+	/*
282
+	 * V4L2 does not currently have definitions for all possible values of
283
+	 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
284
+	 * values, the mapping below should be updated.
285
+	 *
286
+	 * Substitutions are taken from the mapping given for
287
+	 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
288
+	 */
289
+	static const enum v4l2_xfer_func xfer_funcs[] = {
290
+		V4L2_XFER_FUNC_DEFAULT,    /* Unspecified */
291
+		V4L2_XFER_FUNC_709,
292
+		V4L2_XFER_FUNC_709,        /* Substitution for BT.470-2 M */
293
+		V4L2_XFER_FUNC_709,        /* Substitution for BT.470-2 B, G */
294
+		V4L2_XFER_FUNC_709,        /* Substitution for SMPTE 170M */
295
+		V4L2_XFER_FUNC_SMPTE240M,
296
+		V4L2_XFER_FUNC_NONE,
297
+		V4L2_XFER_FUNC_SRGB,
298
+	};
299
+
300
+	if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
301
+		return xfer_funcs[transfer_characteristics];
302
+
303
+	return V4L2_XFER_FUNC_DEFAULT;  /* Reserved */
304
+}
305
+
306
+static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
307
+{
308
+	/*
309
+	 * V4L2 does not currently have definitions for all possible values of
310
+	 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
311
+	 * values, the mapping below should be updated.
312
+	 *
313
+	 * Substitutions are taken from the mapping given for
314
+	 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
315
+	 *
316
+	 * FCC is assumed to be close enough to 601.
317
+	 */
318
+	static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
319
+		V4L2_YCBCR_ENC_DEFAULT,  /* Unspecified */
320
+		V4L2_YCBCR_ENC_709,
321
+		V4L2_YCBCR_ENC_601,      /* Substitution for FCC */
322
+		V4L2_YCBCR_ENC_601,      /* Substitution for BT.470-2 B, G */
323
+		V4L2_YCBCR_ENC_601,
324
+		V4L2_YCBCR_ENC_SMPTE240M,
325
+	};
326
+
327
+	if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
328
+		return ycbcr_encs[matrix_coefficients];
329
+
330
+	return V4L2_YCBCR_ENC_DEFAULT;  /* Reserved */
272331 }
273332 
274333 /* Simplify a fraction using a simple continued fraction decomposition. The
....@@ -290,7 +349,7 @@
290349 		return;
291350 
292351 	/* Convert the fraction to a simple continued fraction. See
293
-	 * http://mathforum.org/dr.math/faq/faq.fractions.html
352
+	 * https://mathforum.org/dr.math/faq/faq.fractions.html
294353 	 * Stop if the current term is bigger than or equal to the given
295354 	 * threshold.
296355 	 */
....@@ -477,7 +536,7 @@
477536 		fmtdesc = uvc_format_by_guid(&buffer[5]);
478537 
479538 		if (fmtdesc != NULL) {
480
-			strlcpy(format->name, fmtdesc->name,
539
+			strscpy(format->name, fmtdesc->name,
481540 				sizeof(format->name));
482541 			format->fcc = fmtdesc->fcc;
483542 		} else {
....@@ -495,11 +554,27 @@
495554 		 */
496555 		if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
497556 			if (format->fcc == V4L2_PIX_FMT_YUYV) {
498
-				strlcpy(format->name, "Greyscale 8-bit (Y8  )",
557
+				strscpy(format->name, "Greyscale 8-bit (Y8  )",
499558 					sizeof(format->name));
500559 				format->fcc = V4L2_PIX_FMT_GREY;
501560 				format->bpp = 8;
502561 				width_multiplier = 2;
562
+			}
563
+		}
564
+
565
+		/* Some devices report bpp that doesn't match the format. */
566
+		if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
567
+			const struct v4l2_format_info *info =
568
+				v4l2_format_info(format->fcc);
569
+
570
+			if (info) {
571
+				unsigned int div = info->hdiv * info->vdiv;
572
+
573
+				n = info->bpp[0] * div;
574
+				for (i = 1; i < info->comp_planes; i++)
575
+					n += info->bpp[i];
576
+
577
+				format->bpp = DIV_ROUND_UP(8 * n, div);
503578 			}
504579 		}
505580 
....@@ -521,7 +596,7 @@
521596 			return -EINVAL;
522597 		}
523598 
524
-		strlcpy(format->name, "MJPEG", sizeof(format->name));
599
+		strscpy(format->name, "MJPEG", sizeof(format->name));
525600 		format->fcc = V4L2_PIX_FMT_MJPEG;
526601 		format->flags = UVC_FMT_FLAG_COMPRESSED;
527602 		format->bpp = 0;
....@@ -539,13 +614,13 @@
539614 
540615 		switch (buffer[8] & 0x7f) {
541616 		case 0:
542
-			strlcpy(format->name, "SD-DV", sizeof(format->name));
617
+			strscpy(format->name, "SD-DV", sizeof(format->name));
543618 			break;
544619 		case 1:
545
-			strlcpy(format->name, "SDL-DV", sizeof(format->name));
620
+			strscpy(format->name, "SDL-DV", sizeof(format->name));
546621 			break;
547622 		case 2:
548
-			strlcpy(format->name, "HD-DV", sizeof(format->name));
623
+			strscpy(format->name, "HD-DV", sizeof(format->name));
549624 			break;
550625 		default:
551626 			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
....@@ -694,6 +769,8 @@
694769 		}
695770 
696771 		format->colorspace = uvc_colorspace(buffer[3]);
772
+		format->xfer_func = uvc_xfer_func(buffer[4]);
773
+		format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
697774 
698775 		buflen -= buffer[0];
699776 		buffer += buffer[0];
....@@ -1517,6 +1594,31 @@
15171594 				return -EINVAL;
15181595 			}
15191596 
1597
+			/*
1598
+			 * Some devices reference an output terminal as the
1599
+			 * source of extension units. This is incorrect, as
1600
+			 * output terminals only have an input pin, and thus
1601
+			 * can't be connected to any entity in the forward
1602
+			 * direction. The resulting topology would cause issues
1603
+			 * when registering the media controller graph. To
1604
+			 * avoid this problem, connect the extension unit to
1605
+			 * the source of the output terminal instead.
1606
+			 */
1607
+			if (UVC_ENTITY_IS_OTERM(entity)) {
1608
+				struct uvc_entity *source;
1609
+
1610
+				source = uvc_entity_by_id(chain->dev,
1611
+							  entity->baSourceID[0]);
1612
+				if (!source) {
1613
+					uvc_trace(UVC_TRACE_DESCR,
1614
+						"Can't connect extension unit %u in chain\n",
1615
+						forward->id);
1616
+					break;
1617
+				}
1618
+
1619
+				forward->baSourceID[0] = source->id;
1620
+			}
1621
+
15201622 			list_add_tail(&forward->chain, &chain->entities);
15211623 			if (uvc_trace_param & UVC_TRACE_PROBE) {
15221624 				if (!found)
....@@ -1535,6 +1637,13 @@
15351637 				uvc_trace(UVC_TRACE_DESCR, "Unsupported input "
15361638 					"terminal %u.\n", forward->id);
15371639 				return -EINVAL;
1640
+			}
1641
+
1642
+			if (UVC_ENTITY_IS_OTERM(entity)) {
1643
+				uvc_trace(UVC_TRACE_DESCR,
1644
+					"Unsupported connection between output terminals %u and %u\n",
1645
+					entity->id, forward->id);
1646
+				break;
15381647 			}
15391648 
15401649 			list_add_tail(&forward->chain, &chain->entities);
....@@ -1999,7 +2108,7 @@
19992108 		break;
20002109 	}
20012110 
2002
-	strlcpy(vdev->name, dev->name, sizeof(vdev->name));
2111
+	strscpy(vdev->name, dev->name, sizeof(vdev->name));
20032112 
20042113 	/*
20052114 	 * Set the driver data before calling video_register_device, otherwise
....@@ -2007,7 +2116,7 @@
20072116 	 */
20082117 	video_set_drvdata(vdev, stream);
20092118 
2010
-	ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
2119
+	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
20112120 	if (ret < 0) {
20122121 		uvc_printk(KERN_ERR, "Failed to register %s device (%d).\n",
20132122 			   v4l2_type_names[type], ret);
....@@ -2094,10 +2203,9 @@
20942203 
20952204 #ifdef CONFIG_MEDIA_CONTROLLER
20962205 		ret = uvc_mc_register_entities(chain);
2097
-		if (ret < 0) {
2098
-			uvc_printk(KERN_INFO, "Failed to register entites "
2099
-				"(%d).\n", ret);
2100
-		}
2206
+		if (ret < 0)
2207
+			uvc_printk(KERN_INFO,
2208
+				   "Failed to register entities (%d).\n", ret);
21012209 #endif
21022210 	}
21032211 
....@@ -2148,7 +2256,7 @@
21482256 		    ? dev->info->quirks : uvc_quirks_param;
21492257 
21502258 	if (udev->product != NULL)
2151
-		strlcpy(dev->name, udev->product, sizeof(dev->name));
2259
+		strscpy(dev->name, udev->product, sizeof(dev->name));
21522260 	else
21532261 		snprintf(dev->name, sizeof(dev->name),
21542262 			 "UVC Camera (%04x:%04x)",
....@@ -2412,7 +2520,9 @@
24122520 	.quirks = UVC_QUIRK_FORCE_Y8,
24132521 };
24142522 
2415
-#define UVC_QUIRK_INFO(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2523
+#define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2524
+#define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2525
+	{.meta_format = m}
24162526 
24172527 /*
24182528  * The Logitech cameras listed below have their interface class set to
....@@ -2521,7 +2631,7 @@
25212631 	  .bInterfaceClass	= USB_CLASS_VIDEO,
25222632 	  .bInterfaceSubClass	= 1,
25232633 	  .bInterfaceProtocol	= 0,
2524
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
2634
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
25252635 	/* Chicony CNF7129 (Asus EEE 100HE) */
25262636 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
25272637 				| USB_DEVICE_ID_MATCH_INT_INFO,
....@@ -2530,7 +2640,7 @@
25302640 	  .bInterfaceClass	= USB_CLASS_VIDEO,
25312641 	  .bInterfaceSubClass	= 1,
25322642 	  .bInterfaceProtocol	= 0,
2533
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2643
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
25342644 	/* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
25352645 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
25362646 				| USB_DEVICE_ID_MATCH_INT_INFO,
....@@ -2593,7 +2703,7 @@
25932703 	  .bInterfaceClass	= USB_CLASS_VIDEO,
25942704 	  .bInterfaceSubClass	= 1,
25952705 	  .bInterfaceProtocol	= 0,
2596
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_PROBE_MINMAX
2706
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
25972707 					| UVC_QUIRK_BUILTIN_ISIGHT) },
25982708 	/* Apple Built-In iSight via iBridge */
25992709 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
....@@ -2675,7 +2785,7 @@
26752785 	  .bInterfaceClass	= USB_CLASS_VIDEO,
26762786 	  .bInterfaceSubClass	= 1,
26772787 	  .bInterfaceProtocol	= 0,
2678
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_PROBE_MINMAX
2788
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
26792789 					| UVC_QUIRK_PROBE_DEF) },
26802790 	/* IMC Networks (Medion Akoya) */
26812791 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
....@@ -2775,7 +2885,7 @@
27752885 	  .bInterfaceClass	= USB_CLASS_VIDEO,
27762886 	  .bInterfaceSubClass	= 1,
27772887 	  .bInterfaceProtocol	= 0,
2778
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_PROBE_MINMAX
2888
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
27792889 					| UVC_QUIRK_PROBE_EXTRAFIELDS) },
27802890 	/* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
27812891 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
....@@ -2793,7 +2903,7 @@
27932903 	  .bInterfaceClass	= USB_CLASS_VIDEO,
27942904 	  .bInterfaceSubClass	= 1,
27952905 	  .bInterfaceProtocol	= 0,
2796
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2906
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
27972907 	/* Manta MM-353 Plako */
27982908 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
27992909 				| USB_DEVICE_ID_MATCH_INT_INFO,
....@@ -2839,7 +2949,7 @@
28392949 	  .bInterfaceClass	= USB_CLASS_VIDEO,
28402950 	  .bInterfaceSubClass	= 1,
28412951 	  .bInterfaceProtocol	= 0,
2842
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_STATUS_INTERVAL) },
2952
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
28432953 	/* MSI StarCam 370i */
28442954 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
28452955 				| USB_DEVICE_ID_MATCH_INT_INFO,
....@@ -2866,7 +2976,7 @@
28662976 	  .bInterfaceClass	= USB_CLASS_VIDEO,
28672977 	  .bInterfaceSubClass	= 1,
28682978 	  .bInterfaceProtocol	= 0,
2869
-	  .driver_info		= UVC_QUIRK_INFO(UVC_QUIRK_PROBE_MINMAX
2979
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
28702980 					| UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
28712981 	/* Oculus VR Positional Tracker DK2 */
28722982 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
....@@ -2886,6 +2996,24 @@
28862996 	  .bInterfaceSubClass	= 1,
28872997 	  .bInterfaceProtocol	= 0,
28882998 	  .driver_info		= (kernel_ulong_t)&uvc_quirk_force_y8 },
2999
+	/* GEO Semiconductor GC6500 */
3000
+	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
3001
+				| USB_DEVICE_ID_MATCH_INT_INFO,
3002
+	  .idVendor		= 0x29fe,
3003
+	  .idProduct		= 0x4d53,
3004
+	  .bInterfaceClass	= USB_CLASS_VIDEO,
3005
+	  .bInterfaceSubClass	= 1,
3006
+	  .bInterfaceProtocol	= 0,
3007
+	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3008
+	/* Intel RealSense D4M */
3009
+	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
3010
+				| USB_DEVICE_ID_MATCH_INT_INFO,
3011
+	  .idVendor		= 0x8086,
3012
+	  .idProduct		= 0x0b03,
3013
+	  .bInterfaceClass	= USB_CLASS_VIDEO,
3014
+	  .bInterfaceSubClass	= 1,
3015
+	  .bInterfaceProtocol	= 0,
3016
+	  .driver_info		= UVC_INFO_META(V4L2_META_FMT_D4XX) },
28893017 	/* Generic USB Video Class */
28903018 	{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
28913019 	{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },