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

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.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b7c59864

sound/soc/sof/intel/hda-ctrl.c

+13 −0
Original line number Diff line number Diff line
@@ -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 */