diff options
| -rw-r--r-- | drivers/soundwire/bus.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index 3c67266f9483..f1ffb8e0839d 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -386,6 +386,13 @@ int sdw_fill_msg(struct sdw_msg *msg, struct sdw_slave *slave, * Read/Write IO functions. */ +/** + * sdw_nread_no_pm() - Read "n" contiguous SDW Slave registers with no PM + * @slave: SDW Slave + * @addr: Register address + * @count: length + * @val: Buffer for values to be read + */ int sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val) { struct sdw_msg msg; @@ -403,6 +410,13 @@ int sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val) } EXPORT_SYMBOL(sdw_nread_no_pm); +/** + * sdw_nwrite_no_pm() - Write "n" contiguous SDW Slave registers with no PM + * @slave: SDW Slave + * @addr: Register address + * @count: length + * @val: Buffer for values to be written + */ int sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val) { struct sdw_msg msg; @@ -420,6 +434,12 @@ int sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, const u8 * } EXPORT_SYMBOL(sdw_nwrite_no_pm); +/** + * sdw_write_no_pm() - Write a SDW Slave register with no PM + * @slave: SDW Slave + * @addr: Register address + * @value: Register value + */ int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value) { return sdw_nwrite_no_pm(slave, addr, 1, &value); @@ -492,6 +512,11 @@ int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 val } EXPORT_SYMBOL(sdw_bwrite_no_pm_unlocked); +/** + * sdw_read_no_pm() - Read a SDW Slave register with no PM + * @slave: SDW Slave + * @addr: Register address + */ int sdw_read_no_pm(struct sdw_slave *slave, u32 addr) { u8 buf; @@ -538,6 +563,9 @@ EXPORT_SYMBOL(sdw_update); * @addr: Register address * @count: length * @val: Buffer for values to be read + * + * This version of the function will take a PM reference to the slave + * device. */ int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val) { @@ -562,6 +590,9 @@ EXPORT_SYMBOL(sdw_nread); * @addr: Register address * @count: length * @val: Buffer for values to be written + * + * This version of the function will take a PM reference to the slave + * device. */ int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val) { @@ -584,6 +615,9 @@ EXPORT_SYMBOL(sdw_nwrite); * sdw_read() - Read a SDW Slave register * @slave: SDW Slave * @addr: Register address + * + * This version of the function will take a PM reference to the slave + * device. */ int sdw_read(struct sdw_slave *slave, u32 addr) { @@ -603,6 +637,9 @@ EXPORT_SYMBOL(sdw_read); * @slave: SDW Slave * @addr: Register address * @value: Register value + * + * This version of the function will take a PM reference to the slave + * device. */ int sdw_write(struct sdw_slave *slave, u32 addr, u8 value) { |