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ASoC: SOF: Intel: add codec_mask module parameter

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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>
This commit is contained in:
Kai Vehmanen 2019-11-25 11:20:09 +02:00 committed by Pierre Bossart
parent c642382958
commit 0bdbe73a44
1 changed files with 10 additions and 0 deletions
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10
sound/soc/sof/intel/hda-ctrl.c
View File

@ -20,6 +20,10 @@
#include "../ops.h"
#include "hda.h"
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");
/*
* HDA Operations.
*/
@ -206,6 +210,12 @@ 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 */