From 4f6250b82cb8f950a1b1bea62843a88bbb208187 Mon Sep 17 00:00:00 2001 From: Kai Vehmanen Date: Mon, 9 Dec 2019 18:48:51 -0600 Subject: [PATCH] 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 Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20191210004854.16845-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown --- 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 df1909e..871b71a 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 #include #include #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 */ -- 2.7.4