kernel/drivers/crypto/ccree/cc_pm.h, branch linux-rolling-stable

crypto: ccree - make cc_pm_{suspend,resume}() static

2020-02-22T01:25:44Z

cc_pm_suspend() and cc_pm_resume() are not used outside drivers/crypto/ccree/cc_pm.c. Signed-off-by: Geert Uytterhoeven Signed-off-by: Herbert Xu

crypto: ccree - remove cc_pm_is_dev_suspended() wrapper

2020-02-22T01:25:44Z

If CONFIG_PM=y, cc_pm_is_dev_suspended() is just a wrapper around pm_runtime_suspended(). If CONFIG_PM=n, cc_pm_is_dev_suspended() a dummy that behaves exactly the same as the dummy for pm_runtime_suspended(). Hence remove cc_pm_is_dev_suspended(), and call pm_runtime_suspended() directly. Signed-off-by: Geert Uytterhoeven Signed-off-by: Herbert Xu

crypto: ccree - simplify Runtime PM handling

2020-02-22T01:25:44Z

Currently, a large part of the probe function runs before Runtime PM is enabled. As the driver manages the device's clock manually, this may work fine on some systems, but may break on platforms with a more complex power hierarchy. Fix this by moving the initialization of Runtime PM before the first register access (in cc_wait_for_reset_completion()), and putting the device to sleep only after the last access (in cc_set_ree_fips_status()). This allows to remove the pm_on flag, which was used to track manually if Runtime PM had been enabled or not. Remove the cc_pm_{init,go,fini}() wrappers, as they are called only once, and obscure operation. Signed-off-by: Geert Uytterhoeven Signed-off-by: Herbert Xu

crypto: ccree - erase unneeded inline funcs

2020-01-22T08:21:11Z

These inline versions of PM function for the case of CONFIG_PM is not set are never used. Erase them. Signed-off-by: Gilad Ben-Yossef Signed-off-by: Herbert Xu

crypto: ccree - make cc_pm_put_suspend() void

2020-01-22T08:21:10Z

cc_pm_put_suspend() return value was never checked and is not useful. Turn it into a void functions. Signed-off-by: Gilad Ben-Yossef Signed-off-by: Herbert Xu

crypto: ccree - prevent isr handling in case driver is suspended

2019-06-27T06:28:00Z

ccree irq may be shared with other devices, in order to prevent ccree isr handling while device maybe suspended we added a check to verify that the device is not suspended. Signed-off-by: Ofir Drang Signed-off-by: Herbert Xu

crypto: ccree - copyright header update

2019-04-25T07:38:14Z

This sacrificial copyright header update is offered to the legal department as atonement for any changes made in this driver files in the course of the current year which have not been duly recorded as such. Signed-off-by: Gilad Ben-Yossef Signed-off-by: Herbert Xu

crypto: ccree - add missing inline qualifier

2019-02-22T04:40:56Z

Commit 1358c13a48c4 ("crypto: ccree - fix resume race condition on init") was missing a "inline" qualifier for stub function used when CONFIG_PM is not set causing a build warning. Fixes: 1358c13a48c4 ("crypto: ccree - fix resume race condition on init") Cc: stable@kernel.org # v4.20 Signed-off-by: Gilad Ben-Yossef Acked-by: Geert Uytterhoeven Signed-off-by: Herbert Xu

crypto: ccree - fix resume race condition on init

2019-02-08T07:28:02Z

We were enabling autosuspend, which is using data set by the hash module, prior to the hash module being inited, casuing a crash on resume as part of the startup sequence if the race was lost. This was never a real problem because the PM infra was using low res timers so we were always winning the race, until commit 8234f6734c5d ("PM-runtime: Switch autosuspend over to using hrtimers") changed that :-) Fix this by seperating the PM setup and enablement and doing the latter only at the end of the init sequence. Signed-off-by: Gilad Ben-Yossef Cc: Vincent Guittot Cc: stable@kernel.org # v4.20 Signed-off-by: Herbert Xu

crypto: ccree - introduce CryptoCell driver

2018-02-15T15:26:40Z

Introduce basic low level Arm TrustZone CryptoCell HW support. This first patch doesn't actually register any Crypto API transformations, these will follow up in the next patch. This first revision supports the CC 712 REE component. Signed-off-by: Gilad Ben-Yossef Signed-off-by: Herbert Xu