We have existing platforms where the wrong machine is selected. We need to make sure the number of devices reported on a link matches what we expect for a link descriptor. This helps avoid using the TGL-RVP configuration for an HP platform or vice-versa, depending on the order in which they are inserted in the table.
Co-developed-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Reviewed-by: Bard Liao bard.liao@intel.com Reviewed-by: Guennadi Liakhovetski guennadi.liakhovetski@intel.com --- sound/soc/sof/intel/hda.c | 59 +++++++++++++++++++++++++++++---------- 1 file changed, 45 insertions(+), 14 deletions(-)
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 57853ef89cd1..2279e30c9245 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -1021,32 +1021,63 @@ static bool link_slaves_found(struct snd_sof_dev *sdev, struct sdw_intel_slave_id *ids = sdw->ids; int num_slaves = sdw->num_slaves; unsigned int part_id, link_id, unique_id, mfg_id; - int i, j; + int i, j, k;
for (i = 0; i < link->num_adr; i++) { u64 adr = link->adr_d[i].adr; + int reported_part_count = 0;
mfg_id = SDW_MFG_ID(adr); part_id = SDW_PART_ID(adr); link_id = SDW_DISCO_LINK_ID(adr); + + for (j = 0; j < num_slaves; j++) { + /* find out how many identical parts were reported on that link */ + if (ids[j].link_id == link_id && + ids[j].id.part_id == part_id && + ids[j].id.mfg_id == mfg_id) + reported_part_count++; + } + for (j = 0; j < num_slaves; j++) { + int expected_part_count = 0; + if (ids[j].link_id != link_id || ids[j].id.part_id != part_id || ids[j].id.mfg_id != mfg_id) continue; - /* - * we have to check unique id - * if there is more than one - * Slave on the link - */ - unique_id = SDW_UNIQUE_ID(adr); - if (link->num_adr == 1 || - ids[j].id.unique_id == SDW_IGNORED_UNIQUE_ID || - ids[j].id.unique_id == unique_id) { - dev_dbg(bus->dev, - "found %x at link %d\n", - part_id, link_id); - break; + + /* find out how many identical parts are expected */ + for (k = 0; k < link->num_adr; k++) { + u64 adr2 = link->adr_d[i].adr; + unsigned int part_id2, link_id2, mfg_id2; + + mfg_id2 = SDW_MFG_ID(adr2); + part_id2 = SDW_PART_ID(adr2); + link_id2 = SDW_DISCO_LINK_ID(adr2); + + if (link_id2 == link_id && + part_id2 == part_id && + mfg_id2 == mfg_id) + expected_part_count++; + } + + if (reported_part_count == expected_part_count) { + /* + * we have to check unique id + * if there is more than one + * Slave on the link + */ + unique_id = SDW_UNIQUE_ID(adr); + if (reported_part_count == 1 || + ids[j].id.unique_id == unique_id) { + dev_dbg(bus->dev, "found %x at link %d\n", + part_id, link_id); + break; + } + } else { + dev_dbg(bus->dev, "part %x reported %d expected %d on link %d, skipping\n", + part_id, reported_part_count, expected_part_count, link_id); } } if (j == num_slaves) {