Linux kernel development work - see feature branches https://git.zx2c4.com/linux-dev/atom/drivers/firmware/arm_scmi?h=linus%2Fmaster 2022-05-03T13:23:02Z 2022-05-03T13:23:02Z Cristian Marussi cristian.marussi@arm.com 2022-05-03T12:10:47Z urn:sha1:c7f8852d4216f7dc061f0bc02dda5af396048861 A few dereferences could happen before the iterator pointer argument was checked for NULL, causing the following smatch warnings: drivers/firmware/arm_scmi/driver.c:1214 scmi_iterator_run() warn: variable dereferenced before check 'i' (see line 1210) Fix by moving the checks early and dropping some unneeded local references. No functional change. Link: https://lore.kernel.org/r/20220503121047.3590340-1-cristian.marussi@arm.com Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:53Z Etienne Carriere etienne.carriere@linaro.org 2022-04-25T08:51:27Z urn:sha1:5e114ad984c220fcc5c08b6bf3b458ce95f46f43 Add support for TEE shared memory in optee scmi transport. When using tee shared memory, scmi optee transport manages SCMI messages using msg protocol(from msg.c) in shared memory, whereas smt(from shmem.c) protocol is used with static IOMEM based shared buffers. Link: https://lore.kernel.org/r/20220425085127.2009-1-etienne.carriere@linaro.org Reviewed-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:53Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:49Z urn:sha1:4c74701b1eb7636eb0cdd66b488b42920105122a Add SCMI v3.1 voltage protocol support for asynchronous VOLTAGE_LEVEL_SET command. Note that, if a voltage domain is advertised to support the asynchronous version of VOLTAGE_LEVEL_SET, the command will be issued asynchronously unless explicitly requested to use the synchronous version by setting the mode to SCMI_VOLTAGE_LEVEL_SET_SYNC when calling voltage_ops->level_set. The SCMI regulator driver level_set invocation has been left unchanged so that it will transparently use the asynchronous version if available. Link: https://lore.kernel.org/r/20220330150551.2573938-21-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:53Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:48Z urn:sha1:7aa75496ea1f38dfd99b93c66f8d9bc525d11efc Add SCMI v3.1 clock pre and post notifications. Link: https://lore.kernel.org/r/20220330150551.2573938-20-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:53Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:51Z urn:sha1:71bea05797b55d43c3cee8e2ee279ab510e0563c Starting with SCMI v3.1, the PERFORMANCE_LIMITS_SET command allows a user to request only one between max and min ranges to be changed, while leaving the other untouched if set to zero in the request. Anyway SCMI v3.1 states also explicitly that you cannot leave both of those unchanged (zeroed) when issuing such command, so add a proper check for this condition. Link: https://lore.kernel.org/r/20220330150551.2573938-23-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> [sudeep.holla: Dropped check for v3.0 and above to make the check unconditional, updated the subject accordingly] Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:53Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:50Z urn:sha1:3630cd8130ce0b2a607db09a1995e5bf99053ae1 Add SCMI v3.1 internal support for parsing message attributes reporting the capability of a performance domain to report power-cost in microwatts. Link: https://lore.kernel.org/r/20220330150551.2573938-22-cristian.marussi@arm.com Cc: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:53Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:47Z urn:sha1:79d2ea9244180bf76537c23406d838db955a57b5 Make SCMI perf protocol use the common iterator protocol helpers for issuing the multi-part commands. Link: https://lore.kernel.org/r/20220330150551.2573938-19-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:52Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:46Z urn:sha1:d8d7e91316746d130a9c5d09dc21d59eff5e3e43 Make SCMI voltage protocol use the common iterator protocol helpers for issuing the multi-part commands. Link: https://lore.kernel.org/r/20220330150551.2573938-18-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:52Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:45Z urn:sha1:7bc7caafe6b1e5b882255a42bc1bf112fa87b69b Make SCMI clock protocol use the common iterator protocol helpers for issuing the multi-part commands. Link: https://lore.kernel.org/r/20220330150551.2573938-17-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> 2022-04-28T17:22:52Z Cristian Marussi cristian.marussi@arm.com 2022-03-30T15:05:44Z urn:sha1:802b0bed011e598876c0975da2c41dadf01a3d03 Add support for SCMI v3.1 SENSOR_AXIS_NAME_GET multi-part command using the common iterator protocol helpers. Link: https://lore.kernel.org/r/20220330150551.2573938-16-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>