diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2020-01-11 00:57:30 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-01-14 09:23:12 +0300 |
| commit | 7181b1d41d0d9d759d3f3c444e3ccffbf7964c92 (patch) | |
| tree | e4de08d1ea8f5d29419ee3a941bed030f33c7e0b /drivers/soundwire/cadence_master.c | |
| parent | ae478d6e19376d3d87a695af5b5a15914abede71 (diff) | |
| download | linux-7181b1d41d0d9d759d3f3c444e3ccffbf7964c92.tar.xz | |
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: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200110215731.30747-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire/cadence_master.c')
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 19b4862e8cce..b0de7d752bdb 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -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]); + } } |