Re: snd_hdsp missing on raspberrypi pi 5

David Kessler <david@xxxxxxxxx> · Mon, 20 May 2024 12:48:36 +0200



    Ok everything works well after adding the right firmware to
      /lib/firmware/hdsploader! I'am very happy and thank's to the folks
      pointing me in the right direction!
    Cheers!

    
    Le 20.05.24 à 10:39, David Kessler a
      écrit :

    
      Adding dtoverlay=pcie-32bit-dma too /boot/firmware/config.txt
        is helping a lot! The card is recognized in alsa! But yet no
        controls but says it wants to update firmware! I can feel I am
        close!
      Le 20.05.24 à 10:11, David Kessler a
        écrit :

      
        As of
        https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/sound/pci/rme9652/hdsp.c?h=v6.8.10
        on line 3768 in
        static int snd_hdsp_initialize_memory(struct hdsp *hdsp)
{
	struct snd_dma_buffer *capture_dma, *playback_dma;

	capture_dma = snd_hammerfall_get_buffer(hdsp->pci, HDSP_DMA_AREA_BYTES);
	playback_dma = snd_hammerfall_get_buffer(hdsp->pci, HDSP_DMA_AREA_BYTES);
	if (!capture_dma || !playback_dma) {
		dev_err(hdsp->card->dev,
			"%s: no buffers available\n", hdsp->card_name);
		return -ENOMEM;
	}
        Who is responsible for this? We must have a talk! (:

        
        Le 20.05.24 à 09:07, David Kessler
          a écrit :

        
        From
          what I can tell comparing to a working system is that I have
          all needed kernel modules loaded. the oss are indeed no longer
          needed. Thank's for pointing me out. 

          
          Here a paste bin with the info I could gather. 

          
          https://pastebin.com/dAfDDnkM
          

          The missing interrupt I wonder about and still the no
          available buffer error which returns -12 but also the memory
          address is stated beeing [virtual] on the PI. Is there
          something wrong with the bus not beeing PCI standard
          compliant? 

          
          What my intuition tells me is that the PI is handling the DMA
          of the PCI bus in a different way than other architecture. I
          am not sure what to do as to troubleshoot further /: Read
          code? 

          
          Thank's 

          
          Le 19.05.24 à 23:51, Robert M. Riches Jr. a écrit : 

          
          Are you sure those are current?  "oss"
            usually refers to the 

            open-source-sound that predated ALSA around 25 years ago. 

            
            The modinfo description from kernel 5.10.0 for snd-pcm-oss 

            seems to indicate it's for OSS emulation: "PCM OSS emulation
            

            for ALSA."  For kernel 5.10.0-29-amd64 from Devuan Chimaera,
            

            snd-seq-oss is not even listed. 

            
            HTH 

            
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