At Thu, 19 Aug 2010 20:17:42 +0200, David Henningsson wrote: > > This patch is helpful for tracking down bugs without having all > information about the chip. I don't want to change coef index in reading a proc file in general. If any, you should implement a codec-specific hook. thanks, Takashi > > -- > David Henningsson, Canonical Ltd. > http://launchpad.net/~diwic > [2 0001-Show-processing-coefficients-in-codec-proc-file.patch <text/x-patch (7bit)>] > >From 568a3c0e45396cf6cfd8e8dac13f76f756c7e3f3 Mon Sep 17 00:00:00 2001 > From: David Henningsson <david.henningsson@xxxxxxxxxxxxx> > Date: Thu, 19 Aug 2010 18:40:44 +0200 > Subject: [PATCH 1/2] Show processing coefficients in codec proc file > > Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx> > --- > sound/pci/hda/hda_proc.c | 16 ++++++++++++++-- > 1 files changed, 14 insertions(+), 2 deletions(-) > > diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c > index f025200..88e40f0 100644 > --- a/sound/pci/hda/hda_proc.c > +++ b/sound/pci/hda/hda_proc.c > @@ -467,11 +467,23 @@ static void print_unsol_cap(struct snd_info_buffer *buffer, > static void print_proc_caps(struct snd_info_buffer *buffer, > struct hda_codec *codec, hda_nid_t nid) > { > + int i, val; > unsigned int proc_caps = snd_hda_param_read(codec, nid, > AC_PAR_PROC_CAP); > + unsigned int ncoeff = (proc_caps & AC_PCAP_NUM_COEF) >> > + AC_PCAP_NUM_COEF_SHIFT; > + > snd_iprintf(buffer, " Processing caps: benign=%d, ncoeff=%d\n", > - proc_caps & AC_PCAP_BENIGN, > - (proc_caps & AC_PCAP_NUM_COEF) >> AC_PCAP_NUM_COEF_SHIFT); > + proc_caps & AC_PCAP_BENIGN, ncoeff); > + for (i = 0; i < ncoeff; i++) { > + snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_COEF_INDEX, > + i); > + val = snd_hda_codec_read(codec, nid, 0, > + AC_VERB_GET_PROC_COEF, 0); > + snd_iprintf(buffer, " Processing coef %d: 0x%x\n", i, > + val); > + } > + > } > > static void print_conn_list(struct snd_info_buffer *buffer, > -- > 1.7.0.4 > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
