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| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2023-11-23 10:53:32 +0000 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-11-24 12:26:26 +0530 |
| commit | a7ae05ef356162c2a7ff108a7ff154d7d0dcd6aa (patch) | |
| tree | 5d59022064046f94ab7272c4cef8dfafaa5be899 /drivers/soundwire | |
| parent | 8a8a9ac8a4972ee69d3dd3d1ae43963ae39cee18 (diff) | |
| download | lwn-a7ae05ef356162c2a7ff108a7ff154d7d0dcd6aa.tar.gz lwn-a7ae05ef356162c2a7ff108a7ff154d7d0dcd6aa.zip | |
soundwire: qcom: set controller id to hw master id
Qualcomm Soundwire Controllers IP version after 1.3 have a dedicated
master id register which will provide a unique id value for each
controller instance. Use this value instead of artificially generated
value from idr. Versions 1.3 and below only have one instance of
soundwire controller which does no have this register, so let them use
value from idr.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231123105332.102167-1-srinivas.kandagatla@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/qcom.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index 7f8549aab42f..d869e2276815 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -1620,9 +1620,13 @@ static int qcom_swrm_probe(struct platform_device *pdev) } } - /* FIXME: is there a DT-defined value to use ? */ ctrl->bus.controller_id = -1; + if (ctrl->version > SWRM_VERSION_1_3_0) { + ctrl->reg_read(ctrl, SWRM_COMP_MASTER_ID, &val); + ctrl->bus.controller_id = val; + } + ret = sdw_bus_master_add(&ctrl->bus, dev, dev->fwnode); if (ret) { dev_err(dev, "Failed to register Soundwire controller (%d)\n", |