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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 <lkp@intel.com>
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 <alexandre.belloni@bootlin.com>
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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 <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/9e3718fe1128964907619ad325c0c5f5c1354ace.1758182509.git.dan.carpenter@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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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 <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/21f1a18008f1bbc8f70d0bd5c05b72fbf5fc9c7d.1758182509.git.dan.carpenter@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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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 <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-3-e0fdf8aae545@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Remove memcpy by using directly the shared memory.
Remove memset be initialize variable to 0 on stack.
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-2-e0fdf8aae545@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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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 <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-1-e0fdf8aae545@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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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>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220308133505.471601-1-clement.leger@bootlin.com
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Alexandre Belloni
Dan Carpenter
Clément Le Goffic
Clément Léger