Commit 4f6250b8 authored by Kai Vehmanen's avatar Kai Vehmanen Committed by Mark Brown

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: default avatarKai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191210004854.16845-6-pierre-louis.bossart@linux.intel.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent b7c59864
......@@ -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 */
......
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