1. 22 Jul, 2024 3 commits
  2. 19 Jul, 2024 2 commits
    • Arnd Bergmann's avatar
      ALSA: hda: tas2781: mark const variables as __maybe_unused · a2d6d8ae
      Arnd Bergmann authored
      An earlier patch changed the DECLARE_TLV_DB_SCALE declaration, but
      now there are additional static const variables that cause
      the same build warnings:
      
      In file included from sound/pci/hda/tas2781_hda_i2c.c:23:
      include/sound/tas2781-tlv.h:23:28: error: 'tas2563_dvc_table' defined but not used [-Werror=unused-const-variable=]
         23 | static const unsigned char tas2563_dvc_table[][4] = {
            |                            ^~~~~~~~~~~~~~~~~
      In file included from include/sound/tlv.h:10,
                       from sound/pci/hda/tas2781_hda_i2c.c:22:
      include/sound/tas2781-tlv.h:20:35: error: 'tas2563_dvc_tlv' defined but not used [-Werror=unused-const-variable=]
         20 | static const DECLARE_TLV_DB_SCALE(tas2563_dvc_tlv, -12150, 50, 1);
            |                                   ^~~~~~~~~~~~~~~
      
      Mark them all as unused as well.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Link: https://patch.msgid.link/20240719095640.3741247-1-arnd@kernel.orgSigned-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      a2d6d8ae
    • wangdicheng's avatar
      ALSA: usb-audio: Fix microphone sound on HD webcam. · 74dba240
      wangdicheng authored
      I own an external usb Webcam, HD webcam, which had low mic volume and
      inconsistent sound quality. Video works as expected.
      
      (snip)
      [   95.473820][ 1] [   T73] usb 5-2.2: new high-speed USB device number 7 using xhci_hcd
      [   95.773974][ 1] [   T73] usb 5-2.2: New USB device found, idVendor=1bcf, idProduct=2281, bcdDevice= 0.05
      [   95.783445][ 1] [   T73] usb 5-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
      [   95.791872][ 1] [   T73] usb 5-2.2: Product: HD webcam
      [   95.797001][ 1] [   T73] usb 5-2.2: Manufacturer: Sunplus IT Co
      [   95.802996][ 1] [   T73] usb 5-2.2: SerialNumber: 20200513
      [   96.092610][ 2] [ T3680] usb 5-2.2: Warning! Unlikely big volume range (=4096), cval->res is probably wrong.
      [   96.102436][ 2] [ T3680] usb 5-2.2: [5] FU [Mic Capture Volume] ch = 1, val = 0/4096/1
      
      Set up quirk cval->res to 16 for 256 levels,
      Set GET_SAMPLE_RATE quirk flag to stop trying to get the sample rate.
      Confirmed that happened anyway later due to the backoff mechanism,
      After 3 failures.
      
      All audio stream on device interfaces share the same values,
      apart from wMaxPacketSize and tSamFreq :
      
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        3
            bAlternateSetting       4
            bNumEndpoints           1
            bInterfaceClass         1 Audio
      
      Interface Descriptor:
        bLength                 9
        bDescriptorType         4
        bInterfaceNumber        3
        bAlternateSetting       4
        bNumEndpoints           1
        bInterfaceClass         1 Audio
        bInterfaceSubClass      2 Streaming
        bInterfaceProtocol      0
        iInterface              0
        AudioStreaming Interface Descriptor:
          bLength                 7
          bDescriptorType        36
          bDescriptorSubtype      1 (AS_GENERAL)
          bTerminalLink           3
          bDelay                  1 frames
          wFormatTag         0x0001 PCM
        AudioStreaming Interface Descriptor:
          bLength                11
          bDescriptorType        36
          bDescriptorSubtype      2 (FORMAT_TYPE)
          bFormatType             1 (FORMAT_TYPE_I)
          bNrChannels             1
          bSubframeSize           2
          bBitResolution         16
          bSamFreqType            1 Discrete
          tSamFreq[ 0]        48000
        Endpoint Descriptor:
          bLength                 9
          bDescriptorType         5
          bEndpointAddress     0x86  EP 6 IN
          bmAttributes            5
            Transfer Type            Isochronous
            Synch Type               Asynchronous
            Usage Type               Data
          wMaxPacketSize     0x0064  1x 100 bytes
          bInterval               4
          bRefresh                0
          bSynchAddress           0
          AudioStreaming Endpoint Descriptor:
            bLength                 7
            bDescriptorType        37
            bDescriptorSubtype      1 (EP_GENERAL)
            bmAttributes         0x01
              Sampling Frequency
            bLockDelayUnits         0 Undefined
            wLockDelay         0x0000
      (snip)
      
      Testing patch provides consistent good sound recording quality and volume range.
      
      (snip)
      [   95.473820][ 1] [   T73] usb 5-2.2: new high-speed USB device number 7 using xhci_hcd
      [   95.773974][ 1] [   T73] usb 5-2.2: New USB device found, idVendor=1bcf, idProduct=2281, bcdDevice= 0.05
      [   95.783445][ 1] [   T73] usb 5-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
      [   95.791872][ 1] [   T73] usb 5-2.2: Product: HD webcam
      [   95.797001][ 1] [   T73] usb 5-2.2: Manufacturer: Sunplus IT Co
      [   95.802996][ 1] [   T73] usb 5-2.2: SerialNumber: 20200513
      [   96.110630][ 3] [ T3680] usbcore: registered new interface driver snd-usb-audio
      [   96.114329][ 7] [ T3677] usb 5-2.2: Found UVC 1.00 device HD webcam (1bcf:2281)
      [   96.167555][ 7] [ T3677] usbcore: registered new interface driver uvcvideo
      Signed-off-by: default avatarwangdicheng <wangdicheng@kylinos.cn>
      Cc: <stable@vger.kernel.org>
      Link: https://patch.msgid.link/20240719020906.8078-1-wangdich9700@163.comSigned-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      74dba240
  3. 18 Jul, 2024 3 commits
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  5. 15 Jul, 2024 4 commits
  6. 14 Jul, 2024 1 commit
  7. 12 Jul, 2024 5 commits
  8. 11 Jul, 2024 2 commits
  9. 10 Jul, 2024 11 commits
  10. 09 Jul, 2024 6 commits