Commit 7181b1d4 authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul

soundwire: cadence_master: handle multiple status reports per Slave

When a Slave reports multiple status in the sticky bits, find the
latest configuration from the mirror of the PING frame status and
update the status directly.
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200110215731.30747-6-pierre-louis.bossart@linux.intel.comSigned-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent ae478d6e
......@@ -676,13 +676,36 @@ static int cdns_update_slave_status(struct sdw_cdns *cdns,
/* first check if Slave reported multiple status */
if (set_status > 1) {
u32 val;
dev_warn_ratelimited(cdns->dev,
"Slave reported multiple Status: %d\n",
mask);
/*
* TODO: we need to reread the status here by
* issuing a PING cmd
*/
"Slave %d reported multiple Status: %d\n",
i, mask);
/* check latest status extracted from PING commands */
val = cdns_readl(cdns, CDNS_MCP_SLAVE_STAT);
val >>= (i * 2);
switch (val & 0x3) {
case 0:
status[i] = SDW_SLAVE_UNATTACHED;
break;
case 1:
status[i] = SDW_SLAVE_ATTACHED;
break;
case 2:
status[i] = SDW_SLAVE_ALERT;
break;
case 3:
default:
status[i] = SDW_SLAVE_RESERVED;
break;
}
dev_warn_ratelimited(cdns->dev,
"Slave %d status updated to %d\n",
i, status[i]);
}
}
......
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