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2024-10-09 05e59e5fb0064c97a1c10921ecd549f2d4a58565 
 kernel/sound/usb/format.c
....@@ -1,18 +1,5 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
2
- *   This program is free software; you can redistribute it and/or modify
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- *   it under the terms of the GNU General Public License as published by
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- *   the Free Software Foundation; either version 2 of the License, or
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- *   (at your option) any later version.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
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- *
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- *   You should have received a copy of the GNU General Public License
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- *   along with this program; if not, write to the Free Software
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- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
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- *
163  */
174 
185 #include <linux/init.h>
....@@ -53,8 +40,12 @@
5340 	case UAC_VERSION_1:
5441 	default: {
5542 		struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
56
-		if (format >= 64)
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-			return 0; /* invalid format */
43
+		if (format >= 64) {
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+			usb_audio_info(chip,
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+				       "%u:%d: invalid format type 0x%llx is detected, processed as PCM\n",
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+				       fp->iface, fp->altsetting, format);
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+			format = UAC_FORMAT_TYPE_I_PCM;
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+		}
5849 		sample_width = fmt->bBitResolution;
5950 		sample_bytes = fmt->bSubframeSize;
6051 		format = 1ULL << format;
....@@ -88,6 +79,8 @@
8879 		break;
8980 	}
9081 	}
82
+
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+	fp->fmt_bits = sample_width;
9184 
9285 	if ((pcm_formats == 0) &&
9386 	    (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) {
....@@ -164,6 +157,19 @@
164157 	return pcm_formats;
165158 }
166159 
160
+static int set_fixed_rate(struct audioformat *fp, int rate, int rate_bits)
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+{
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+	kfree(fp->rate_table);
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+	fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL);
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+	if (!fp->rate_table)
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+		return -ENOMEM;
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+	fp->nr_rates = 1;
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+	fp->rate_min = rate;
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+	fp->rate_max = rate;
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+	fp->rates = rate_bits;
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+	fp->rate_table[0] = rate;
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+	return 0;
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+}
167173 
168174 /*
169175  * parse the format descriptor and stores the possible sample rates
....@@ -238,7 +244,45 @@
238244 		fp->rate_min = combine_triple(&fmt[offset + 1]);
239245 		fp->rate_max = combine_triple(&fmt[offset + 4]);
240246 	}
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+
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+	/* Jabra Evolve 65 headset */
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+	if (chip->usb_id == USB_ID(0x0b0e, 0x030b)) {
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+		/* only 48kHz for playback while keeping 16kHz for capture */
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+		if (fp->nr_rates != 1)
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+			return set_fixed_rate(fp, 48000, SNDRV_PCM_RATE_48000);
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+	}
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+
241255 	return 0;
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+}
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+
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+
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+/*
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+ * Presonus Studio 1810c supports a limited set of sampling
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+ * rates per altsetting but reports the full set each time.
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+ * If we don't filter out the unsupported rates and attempt
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+ * to configure the card, it will hang refusing to do any
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+ * further audio I/O until a hard reset is performed.
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+ *
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+ * The list of supported rates per altsetting (set of available
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+ * I/O channels) is described in the owner's manual, section 2.2.
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+ */
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+static bool s1810c_valid_sample_rate(struct audioformat *fp,
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+				     unsigned int rate)
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+{
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+	switch (fp->altsetting) {
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+	case 1:
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+		/* All ADAT ports available */
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+		return rate <= 48000;
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+	case 2:
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+		/* Half of ADAT ports available */
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+		return (rate == 88200 || rate == 96000);
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+	case 3:
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+		/* Analog I/O only (no S/PDIF nor ADAT) */
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+		return rate >= 176400;
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+	default:
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+		return false;
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+	}
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+	return false;
242286 }
243287 
244288 /*
....@@ -323,6 +367,12 @@
323367 		}
324368 
325369 		for (rate = min; rate <= max; rate += res) {
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+
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+			/* Filter out invalid rates on Presonus Studio 1810c */
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+			if (chip->usb_id == USB_ID(0x194f, 0x010c) &&
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+			    !s1810c_valid_sample_rate(fp, rate))
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+				goto skip_rate;
375
+
326376 			/* Filter out invalid rates on Focusrite devices */
327377 			if (USB_ID_VENDOR(chip->usb_id) == 0x1235 &&
328378 			    !focusrite_valid_sample_rate(chip, fp, rate))
....@@ -352,6 +402,31 @@
352402 	return nr_rates;
353403 }
354404 
405
+/* Line6 Helix series and the Rode Rodecaster Pro don't support the
406
+ * UAC2_CS_RANGE usb function call. Return a static table of known
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+ * clock rates.
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+ */
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+static int line6_parse_audio_format_rates_quirk(struct snd_usb_audio *chip,
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+						struct audioformat *fp)
411
+{
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+	switch (chip->usb_id) {
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+	case USB_ID(0x0e41, 0x4241): /* Line6 Helix */
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+	case USB_ID(0x0e41, 0x4242): /* Line6 Helix Rack */
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+	case USB_ID(0x0e41, 0x4244): /* Line6 Helix LT */
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+	case USB_ID(0x0e41, 0x4246): /* Line6 HX-Stomp */
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+	case USB_ID(0x0e41, 0x4253): /* Line6 HX-Stomp XL */
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+	case USB_ID(0x0e41, 0x4247): /* Line6 Pod Go */
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+	case USB_ID(0x0e41, 0x4248): /* Line6 Helix >= fw 2.82 */
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+	case USB_ID(0x0e41, 0x4249): /* Line6 Helix Rack >= fw 2.82 */
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+	case USB_ID(0x0e41, 0x424a): /* Line6 Helix LT >= fw 2.82 */
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+	case USB_ID(0x0e41, 0x424b): /* Line6 Pod Go */
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+	case USB_ID(0x19f7, 0x0011): /* Rode Rodecaster Pro */
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+		return set_fixed_rate(fp, 48000, SNDRV_PCM_RATE_48000);
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+	}
426
+
427
+	return -ENODEV;
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+}
429
+
355430 /*
356431  * parse the format descriptor and stores the possible sample rates
357432  * on the audioformat table (audio class v2 and v3).
....@@ -361,7 +436,7 @@
361436 {
362437 	struct usb_device *dev = chip->dev;
363438 	unsigned char tmp[2], *data;
364
-	int nr_triplets, data_size, ret = 0;
439
+	int nr_triplets, data_size, ret = 0, ret_l6;
365440 	int clock = snd_usb_clock_find_source(chip, fp, false);
366441 
367442 	if (clock < 0) {
....@@ -379,9 +454,22 @@
379454 			      tmp, sizeof(tmp));
380455 
381456 	if (ret < 0) {
382
-		dev_err(&dev->dev,
383
-			"%s(): unable to retrieve number of sample rates (clock %d)\n",
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+		/* line6 helix devices don't support UAC2_CS_CONTROL_SAM_FREQ call */
458
+		ret_l6 = line6_parse_audio_format_rates_quirk(chip, fp);
459
+		if (ret_l6 == -ENODEV) {
460
+			/* no line6 device found continue showing the error */
461
+			dev_err(&dev->dev,
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+				"%s(): unable to retrieve number of sample rates (clock %d)\n",
384463 				__func__, clock);
464
+			goto err;
465
+		}
466
+		if (ret_l6 == 0) {
467
+			dev_info(&dev->dev,
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+				"%s(): unable to retrieve number of sample rates: set it to a predefined value (clock %d).\n",
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+				__func__, clock);
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+			return 0;
471
+		}
472
+		ret = ret_l6;
385473 		goto err;
386474 	}
387475