Re: [PATCH v4] rtc: optee: add RTC driver for OP-TEE RTC PTA

On Tue, Mar 8, 2022 at 2:36 PM Clément Léger clement.leger@bootlin.com wrote:

This drivers allows to communicate with a RTC PTA handled by OP-TEE [1]. This PTA allows to query RTC information, set/get time and set/get offset depending on the supported features.

[1] https://github.com/OP-TEE/optee_os/pull/5179

Signed-off-by: Clément Léger clement.leger@bootlin.com

Changes in v4:

• Remove error prints except the ones in probe

Changes in v3 (was resent as a second v2 due to a mistake);

• Fix error messages to include ret value and fix wrong IOCTL names
• Use 100 columns char limit

Changes in v2:

• Rebased over tee-shm-for-v5.18
• Switch to tee_shm_alloc_kernel_buf()
• Use export_uuid() to copy uuid
• Fix warnings reported by checkpatch
• Free SHM in error exit path

MAINTAINERS | 6 + drivers/rtc/Kconfig | 10 ++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-optee.c | 362 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 379 insertions(+) create mode 100644 drivers/rtc/rtc-optee.c

Reviewed-by: Jens Wiklander jens.wiklander@linaro.org