From: Kai Vehmanen kai.vehmanen@linux.intel.com
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 --- sound/soc/sof/intel/hda-ctrl.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
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 */