diff options
| author | Charles Keepax <ckeepax@opensource.cirrus.com> | 2026-05-12 11:30:05 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-05-12 19:46:59 +0900 |
| commit | 3492e8b494c18028044d4a2e03db5c7331fbd789 (patch) | |
| tree | d4a8bc6d00776ec82ca0360dab7a46689f4a8545 /include/linux | |
| parent | 5d6919055dec134de3c40167a490f33c74c12581 (diff) | |
soundwire: Add a helper function to wait for device initialisation
Add a new helper function to wait for the device to enumerate
and be initialised by the SoundWire core. Most of the SoundWire
drivers have very similar boiler plate code in their runtime
resume, and that boiler plate tends to access various internals
of the SoundWire structs which is a mild layering violation.
Adding a new core helper function greatly eases both of these
issues.
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260512103022.1154645-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/soundwire/sdw.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 6147eb1fb210..a46cbaec5949 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -1093,6 +1093,8 @@ int sdw_slave_get_current_bank(struct sdw_slave *sdev); int sdw_slave_get_scale_index(struct sdw_slave *slave, u8 *base); +int sdw_slave_wait_for_init(struct sdw_slave *slave, int timeout_ms); + /* messaging and data APIs */ int sdw_read(struct sdw_slave *slave, u32 addr); int sdw_write(struct sdw_slave *slave, u32 addr, u8 value); @@ -1136,6 +1138,12 @@ static inline int sdw_slave_get_current_bank(struct sdw_slave *sdev) return -EINVAL; } +static inline int sdw_slave_wait_for_init(struct sdw_slave *slave, int timeout_ms) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + /* messaging and data APIs */ static inline int sdw_read(struct sdw_slave *slave, u32 addr) { |