This patchset adds support to basic version of Qualcomm NGD SLIMBus controller driver found SoCs from B family.
This controller is light-weight SLIMBus controller driver responsible for communicating with slave HW directly over the bus using messaging interface, and communicating with master component residing on ADSP for bandwidth and data-channel management.
Tested this patchset on DB820c with WCD9335 codec. I have pushed my working branch to [1] incase someone want to try.
This patch has dependency on https://lkml.org/lkml/2018/5/17/251
Changes sinc v1 (https://lwn.net/Articles/754679): - Fixed DT binding making NGD slave of the slim controller. - Fixed few typos spotted by Vinod. - Removed unnessary dmaengine_slave_config suggested by Vinod - Removed few unnessary initializations. - fixed commit log to remove reference to B family suggested by Trilok
Thanks, srini
[1] https://git.linaro.org/people/srinivas.kandagatla/linux.git/log/?h=slimbus-n...
Srinivas Kandagatla (2): slimbus: ngd: dt-bindings: Add slim ngd dt bindings slimbus: ngd: Add qcom SLIMBus NGD driver
.../bindings/slimbus/slim-ngd-qcom-ctrl.txt | 84 ++ drivers/slimbus/Kconfig | 11 + drivers/slimbus/Makefile | 3 + drivers/slimbus/qcom-ngd-ctrl.c | 1342 ++++++++++++++++++++ drivers/slimbus/slimbus.h | 8 + 5 files changed, 1448 insertions(+) create mode 100644 Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt create mode 100644 drivers/slimbus/qcom-ngd-ctrl.c