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soundwire: bus: add sdw_slave_get_current_bank helper

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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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20250909121954.225833-5-srinivas.kandagatla@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Kandagatla
2025-09-09 13:19:45 +01:00
committed by Mark Brown
parent 76cffc3eb1
commit 2e07017b28
2 changed files with 20 additions and 0 deletions
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12
drivers/soundwire/bus.c
View File

@@ -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;

8
include/linux/soundwire/sdw.h
View File

@@ -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)
{