summaryrefslogtreecommitdiff
path: root/drivers/soundwire/bus.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/soundwire/bus.c')
-rw-r--r--drivers/soundwire/bus.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index a9e0aa72654d..5d5b0bd59ae3 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -492,7 +492,7 @@ int sdw_read_no_pm(struct sdw_slave *slave, u32 addr)
}
EXPORT_SYMBOL(sdw_read_no_pm);
-static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
+int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
{
int tmp;
@@ -503,6 +503,21 @@ static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
tmp = (tmp & ~mask) | val;
return sdw_write_no_pm(slave, addr, tmp);
}
+EXPORT_SYMBOL(sdw_update_no_pm);
+
+/* Read-Modify-Write Slave register */
+int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
+{
+ int tmp;
+
+ tmp = sdw_read(slave, addr);
+ if (tmp < 0)
+ return tmp;
+
+ tmp = (tmp & ~mask) | val;
+ return sdw_write(slave, addr, tmp);
+}
+EXPORT_SYMBOL(sdw_update);
/**
* sdw_nread() - Read "n" contiguous SDW Slave registers