kernel/linux.git/drivers/rtc/rtc-optee.c, branch v6.18.21

rtc: optee: make optee_rtc_pm_ops static

2025-10-05T20:44:16+00:00

Fix sparse warningg: drivers/rtc/rtc-optee.c:714:1: sparse: sparse: symbol 'optee_rtc_pm_ops' was not declared. Should it be static? Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202509230549.L26lw7UZ-lkp@intel.com/ Link: https://lore.kernel.org/r/20251005201925.3757345-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni

rtc: optee: Fix error code in optee_rtc_read_alarm()

2025-10-05T18:52:40+00:00

Return "optee_alarm" instead of "alarm". The "alarm" pointer is a valid pointer and not an error pointer. Fixes: 6266aea864fa ("rtc: optee: add alarm related rtc ops to optee rtc driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/9e3718fe1128964907619ad325c0c5f5c1354ace.1758182509.git.dan.carpenter@linaro.org Signed-off-by: Alexandre Belloni

rtc: optee: fix error code in probe()

2025-10-05T18:52:40+00:00

Return an error code if kthread_create() fails. Currently the code returns success. Fixes: 6266aea864fa ("rtc: optee: add alarm related rtc ops to optee rtc driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/21f1a18008f1bbc8f70d0bd5c05b72fbf5fc9c7d.1758182509.git.dan.carpenter@linaro.org Signed-off-by: Alexandre Belloni

rtc: optee: add alarm related rtc ops to optee rtc driver

2025-09-16T15:38:21+00:00

Add read_alarm and set_alarm ops from the rtc framework. The support of an alarm is handled by a kernel thread waiting in OP-TEE for an asynchronous notification that comes in the interrupt handler of the alarm interruption on OP-TEE secure world. Once the notification arrives, the kernel thread previously suspended is rescheduled (this is handled by the OP-TEE kernel driver) and comes back with the alarm information to the kernel. A second session is therefore needed to enable/disable/cancel a waiting alarm event as the kernel thread stopped in OP-TEE takes a form of mutex on the session and so no one can use this session in parallel. Signed-off-by: Clément Le Goffic Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-3-e0fdf8aae545@foss.st.com Signed-off-by: Alexandre Belloni

rtc: optee: remove unnecessary memory operations

2025-09-16T15:38:21+00:00

Remove memcpy by using directly the shared memory. Remove memset be initialize variable to 0 on stack. Signed-off-by: Clément Le Goffic Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-2-e0fdf8aae545@foss.st.com Signed-off-by: Alexandre Belloni

rtc: optee: fix memory leak on driver removal

2025-09-16T15:38:21+00:00

Fix a memory leak in case of driver removal. Free the shared memory used for arguments exchanges between kernel and OP-TEE RTC PTA. Fixes: 81c2f059ab90 ("rtc: optee: add RTC driver for OP-TEE RTC PTA") Signed-off-by: Clément Le Goffic Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-1-e0fdf8aae545@foss.st.com Signed-off-by: Alexandre Belloni

rtc: optee: add RTC driver for OP-TEE RTC PTA

2022-03-25T10:42:50+00:00

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 Reviewed-by: Jens Wiklander Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20220308133505.471601-1-clement.leger@bootlin.com