[alsa-devel] ASoC: dapm: Allow regulators to bypass as well as disable when idle

[Dan Carpenter]

Hi Mark,

I had a question about patch c05b84d14b23: "ASoC: dapm: Allow regulators
to bypass as well as disable when idle" from Sep 7, 2012.

  1022          if (SND_SOC_DAPM_EVENT_ON(event)) {
  1023                  if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  1024                          ret = regulator_allow_bypass(w->regulator, true);
  1025                          if (ret != 0)
  1026                                  dev_warn(w->dapm->dev,
  1027                                           "Failed to bypass %s: %d\n",
  1028                                           w->name, ret);
  1029                  }
  1030  
  1031                  return regulator_enable(w->regulator);
  1032          } else {
  1033                  if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Right now ->invert is a single bit bitfield.  We mostly test
"if (w->invert) {...".  Are we planning to add some more bits in there?

  1034                          ret = regulator_allow_bypass(w->regulator, false);
  1035                          if (ret != 0)
  1036                                  dev_warn(w->dapm->dev,
  1037                                           "Failed to unbypass %s: %d\n",
  1038                                           w->name, ret);
  1039                  }

regards,
dan carpenter