On Thu, Dec 12, 2019 at 06:51:07PM +0000, Elliot Berman wrote: > This series improves support for 32-bit Qualcomm targets on qcom_scm driver and cleans > up the driver for 64-bit implementations. > > Currently, the qcom_scm driver supports only 64-bit Qualcomm targets and very > old 32-bit Qualcomm targets. Newer 32-bit targets use ARM's SMC Calling > Convention to communicate with secure world. Older 32-bit targets use a > "buffer-based" legacy approach for communicating with secure world (as > implemented in qcom_scm-32.c). All arm64 Qualcomm targets use ARM SMCCC. > Currently, SMCCC-based communication is enabled only on ARM64 config and > buffer-based communication only on ARM config. This patch-series combines SMCCC > and legacy conventions and selects the correct convention by querying the secure > world [1]. > > We decided to take the opportunity as well to clean up the driver rather than > try to patch together qcom_scm-32 and qcom_scm-64. > > Patches 1-3 and 15 improve macro names, reorder macros/functions, and prune unused > macros/functions. No functional changes were introduced. > Patches 4-8 clears up the SCM abstraction in qcom_scm-64. > Patches 9-14 clears up the SCM abstraction in qcom_scm-32. > Patches 16-17 enable dynamically using the different calling conventions. I tested this whole series on arm32 (msm8974) and everything looks good from my vantage point. Feel free to add my: Tested-by: Brian Masney <masneyb@xxxxxxxxxxxxx> # arm32 Brian
