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Tue, 10 Nov 2020 00:43:58 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 10 Nov 2020 00:43:10 -0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 10 Nov 2020 16:43:08 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 10 Nov 2020 16:43:09 +0800 From: Macpaul Lin To: Jaroslav Kysela , Takashi Iwai , "Matthias Brugger" , Alexander Tsoy , Nicola Lunghi , Christopher Swenson , Nick Kossifidis , Subject: [PATCH v2] ALSA: usb-audio: disable 96khz support for HUAWEI USB-C HEADSET Date: Tue, 10 Nov 2020 16:42:54 +0800 Message-ID: <1604997774-13593-1-git-send-email-macpaul.lin@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1604995443-30453-1-git-send-email-macpaul.lin@mediatek.com> References: <1604995443-30453-1-git-send-email-macpaul.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201110_034405_669370_33102D3F X-CRM114-Status: GOOD ( 13.40 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-usb@vger.kernel.org, Mediatek WSD Upstream , Eddie Hung , linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux-mediatek@lists.infradead.org, Macpaul Lin , Chunfeng Yun , Macpaul Lin , linux-arm-kernel@lists.infradead.org, Ainge Hsu Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The HUAWEI USB-C headset (VID:0x12d1, PID:0x3a07) reported it supports 96khz. However there will be some random issue under 96khz. Not sure if there is any alternate setting could be applied. Hence 48khz is suggested to be applied at this moment. Signed-off-by: Macpaul Lin Signed-off-by: Eddie Hung Cc: stable@vger.kernel.org --- Changes for v2: - Fix build error. - Add Cc: stable@vger.kernel.org sound/usb/format.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/usb/format.c b/sound/usb/format.c index 1b28d01..7a4837b 100644 --- a/sound/usb/format.c +++ b/sound/usb/format.c @@ -202,6 +202,7 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof fp->rate_min = fp->rate_max = 0; for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { unsigned int rate = combine_triple(&fmt[idx]); + struct usb_device *udev = chip->dev; if (!rate) continue; /* C-Media CM6501 mislabels its 96 kHz altsetting */ @@ -217,6 +218,11 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof (chip->usb_id == USB_ID(0x041e, 0x4064) || chip->usb_id == USB_ID(0x041e, 0x4068))) rate = 8000; + /* Huawei headset can't support 96kHz fully */ + if (rate == 96000 && + chip->usb_id == USB_ID(0x12d1, 0x3a07) && + le16_to_cpu(udev->descriptor.bcdDevice) == 0x49) + continue; fp->rate_table[fp->nr_rates] = rate; if (!fp->rate_min || rate < fp->rate_min) -- 1.7.9.5 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek