diff options
| author | Rander Wang <[email protected]> | 2020-01-10 15:57:27 -0600 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2020-01-14 11:53:12 +0530 |
| commit | 5ebb0945419e5845137102c20b99714ea574a3d8 (patch) | |
| tree | 13ec210aa9128ec8b841b78c205bc6cb3082581c | |
| parent | a2cff9ee4b0200b675ad2dbe00081ff118b6b8a9 (diff) | |
soundwire: cadence_master: clear interrupt status before enabling interrupt
make sure all interrupts status are cleared before enabling interrupt
so that there is no unexpected interrupt triggered.
Signed-off-by: Rander Wang <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index a0ec21b64d42..847b8f5f0a32 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -856,6 +856,16 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) mask = interrupt_mask; update_masks: + /* clear slave interrupt status before enabling interrupt */ + if (state) { + u32 slave_state; + + slave_state = cdns_readl(cdns, CDNS_MCP_SLAVE_INTSTAT0); + cdns_writel(cdns, CDNS_MCP_SLAVE_INTSTAT0, slave_state); + slave_state = cdns_readl(cdns, CDNS_MCP_SLAVE_INTSTAT1); + cdns_writel(cdns, CDNS_MCP_SLAVE_INTSTAT1, slave_state); + } + cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0); cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask); |