target/linux/bcm27xx/patches-4.19/950-0373-staging-bcm2835-audio-Remove-redundant-spdif-stream-.patch

   1 From a1a77a925422be3f0c48002c2aa6c6d898a37f95 Mon Sep 17 00:00:00 2001
   2 From: Takashi Iwai <tiwai@suse.de>
   3 Date: Tue, 4 Sep 2018 17:58:31 +0200
   4 Subject: [PATCH] staging: bcm2835-audio: Remove redundant spdif stream
   5  ctls
   6
   7 commit ab91e26229eaca2832df51e13c1285aea3be33ab upstream.
   8
   9 The "IEC958 Playback Stream" control does basically the very same
  10 thing as "IEC958 Playback Default" redundantly.  The former should
  11 have been stream-specific and restored after closing the stream, but
  12 we don't do in that way.
  13
  14 Since it's nothing but confusion, remove this fake.
  15
  16 Signed-off-by: Takashi Iwai <tiwai@suse.de>
  17 Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19 ---
  20  .../vc04_services/bcm2835-audio/bcm2835-ctl.c | 51 -------------------
  21  1 file changed, 51 deletions(-)
  22
  23 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
  24 +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
  25 @@ -233,48 +233,6 @@ static int snd_bcm2835_spdif_mask_get(st
  26         return 0;
  27  }
  28
  29 -static int snd_bcm2835_spdif_stream_info(struct snd_kcontrol *kcontrol,
  30 -       struct snd_ctl_elem_info *uinfo)
  31 -{
  32 -       uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
  33 -       uinfo->count = 1;
  34 -       return 0;
  35 -}
  36 -
  37 -static int snd_bcm2835_spdif_stream_get(struct snd_kcontrol *kcontrol,
  38 -       struct snd_ctl_elem_value *ucontrol)
  39 -{
  40 -       struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
  41 -       int i;
  42 -
  43 -       mutex_lock(&chip->audio_mutex);
  44 -
  45 -       for (i = 0; i < 4; i++)
  46 -               ucontrol->value.iec958.status[i] =
  47 -               (chip->spdif_status >> (i * 8)) & 0xff;
  48 -
  49 -       mutex_unlock(&chip->audio_mutex);
  50 -       return 0;
  51 -}
  52 -
  53 -static int snd_bcm2835_spdif_stream_put(struct snd_kcontrol *kcontrol,
  54 -       struct snd_ctl_elem_value *ucontrol)
  55 -{
  56 -       struct bcm2835_chip *chip = snd_kcontrol_chip(kcontrol);
  57 -       unsigned int val = 0;
  58 -       int i, change;
  59 -
  60 -       mutex_lock(&chip->audio_mutex);
  61 -
  62 -       for (i = 0; i < 4; i++)
  63 -               val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8);
  64 -       change = val != chip->spdif_status;
  65 -       chip->spdif_status = val;
  66 -
  67 -       mutex_unlock(&chip->audio_mutex);
  68 -       return change;
  69 -}
  70 -
  71  static struct snd_kcontrol_new snd_bcm2835_spdif[] = {
  72         {
  73                 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
  74 @@ -290,15 +248,6 @@ static struct snd_kcontrol_new snd_bcm28
  75                 .info = snd_bcm2835_spdif_mask_info,
  76                 .get = snd_bcm2835_spdif_mask_get,
  77         },
  78 -       {
  79 -               .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
  80 -               SNDRV_CTL_ELEM_ACCESS_INACTIVE,
  81 -               .iface = SNDRV_CTL_ELEM_IFACE_PCM,
  82 -               .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM),
  83 -               .info = snd_bcm2835_spdif_stream_info,
  84 -               .get = snd_bcm2835_spdif_stream_get,
  85 -               .put = snd_bcm2835_spdif_stream_put,
  86 -       },
  87  };
  88
  89  int snd_bcm2835_new_ctl(struct bcm2835_chip *chip)