There has been 2 instances of this helper in codec drivers,
it does not make sense to keep duplicating this part of code.
Lets add a helper sdw_get_current_bank() for codec drivers to use it.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
---
drivers/soundwire/bus.c | 12 ++++++++++++
include/linux/soundwire/sdw.h | 8 ++++++++
2 files changed, 20 insertions(+)
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 4fd5cac799c5..55c1db816534 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -1360,6 +1360,18 @@ int sdw_slave_get_scale_index(struct sdw_slave *slave, u8 *base)
}
EXPORT_SYMBOL(sdw_slave_get_scale_index);
+int sdw_slave_get_current_bank(struct sdw_slave *slave)
+{
+ int tmp;
+
+ tmp = sdw_read(slave, SDW_SCP_CTRL);
+ if (tmp < 0)
+ return tmp;
+
+ return FIELD_GET(SDW_SCP_STAT_CURR_BANK, tmp);
+}
+EXPORT_SYMBOL_GPL(sdw_slave_get_current_bank);
+
static int sdw_slave_set_frequency(struct sdw_slave *slave)
{
int scale_index;
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 096213956d31..e6a3476bcef1 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -1089,6 +1089,8 @@ int sdw_stream_remove_slave(struct sdw_slave *slave,
struct device *of_sdw_find_device_by_node(struct device_node *np);
+int sdw_slave_get_current_bank(struct sdw_slave *sdev);
+
int sdw_slave_get_scale_index(struct sdw_slave *slave, u8 *base);
/* messaging and data APIs */
@@ -1128,6 +1130,12 @@ static inline struct device *of_sdw_find_device_by_node(struct device_node *np)
return NULL;
}
+static inline int sdw_slave_get_current_bank(struct sdw_slave *sdev)
+{
+ WARN_ONCE(1, "SoundWire API is disabled");
+ return -EINVAL;
+}
+
/* messaging and data APIs */
static inline int sdw_read(struct sdw_slave *slave, u32 addr)
{
--
2.50.0