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| author | Kai Vehmanen <kai.vehmanen@linux.intel.com> | 2019-12-10 03:48:51 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-12-10 16:13:38 +0300 |
| commit | 4f6250b82cb8f950a1b1bea62843a88bbb208187 (patch) | |
| tree | 8a6fb4ed731e5f59e1e7dc0d0aaf2ed1a4c395b7 /sound/soc/sof/intel/hda-ctrl.c | |
| parent | b7c5986489b5c55ebebc430037dd4691a6bbc99c (diff) | |
| download | linux-4f6250b82cb8f950a1b1bea62843a88bbb208187.tar.xz | |
ASoC: SOF: Intel: add codec_mask module parameter
Add a module parameter 'codec_mask' to filter out unwanted
HDA codecs from driver probe. E.g. on most systems,
codec_mask=4 will limit to HDMI audio and exclude any
external HDA codecs.
Similar to 'probe_mask' module parameter of snd-hda-intel.
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191210004854.16845-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/intel/hda-ctrl.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-ctrl.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-ctrl.c b/sound/soc/sof/intel/hda-ctrl.c index df1909e1d950..871b71a15a63 100644 --- a/sound/soc/sof/intel/hda-ctrl.c +++ b/sound/soc/sof/intel/hda-ctrl.c @@ -15,11 +15,18 @@ * Hardware interface for generic Intel audio DSP HDA IP */ +#include <linux/module.h> #include <sound/hdaudio_ext.h> #include <sound/hda_register.h> #include "../ops.h" #include "hda.h" +#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) +static int hda_codec_mask = -1; +module_param_named(codec_mask, hda_codec_mask, int, 0444); +MODULE_PARM_DESC(codec_mask, "SOF HDA codec mask for probing"); +#endif + /* * HDA Operations. */ @@ -206,6 +213,12 @@ int hda_dsp_ctrl_init_chip(struct snd_sof_dev *sdev, bool full_reset) bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS); dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask); } + + if (hda_codec_mask != -1) { + bus->codec_mask &= hda_codec_mask; + dev_dbg(bus->dev, "filtered codec_mask = 0x%lx\n", + bus->codec_mask); + } #endif /* clear stream status */ |