kernel/linux.git/drivers/crypto/ccree/cc_pm.c, branch linux-5.3.y

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

2019-06-27T06:28:00+00:00

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 - check that cryptocell reset completed

2019-06-27T06:28:00+00:00

In case of driver probe and pm resume we need to check that the cryptocell hardware reset cycle is completed. during the reset cycle that Cryptocell provide read only access to the APB interface which allows to verify through the CC registers that the reset is completed. Until reset completion we assume that any write/crypto operation is blocked. Signed-off-by: Ofir Drang Signed-off-by: Herbert Xu

crypto: ccree - handle tee fips error during power management resume

2019-04-25T07:38:16+00:00

in order to support cryptocell tee fips error that may occurs while cryptocell ree is suspended, an cc_tee_handle_fips_error call added to the cc_pm_resume function. Signed-off-by: Ofir Drang Signed-off-by: Gilad Ben-Yossef Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Herbert Xu

crypto: ccree - HOST_POWER_DOWN_EN should be the last CC access during suspend

2019-04-25T07:38:16+00:00

During power management suspend the driver need to prepare the device for the power down operation and as a last indication write to the HOST_POWER_DOWN_EN register which signals to the hardware that The ccree is ready for power down. Signed-off-by: Ofir Drang Signed-off-by: Gilad Ben-Yossef Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Herbert Xu

crypto: ccree - pm resume first enable the source clk

2019-04-25T07:38:16+00:00

On power management resume function first enable the device clk source to allow access to the device registers. Signed-off-by: Ofir Drang Signed-off-by: Gilad Ben-Yossef Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Herbert Xu

crypto: ccree - copyright header update

2019-04-25T07:38:14+00:00

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 - fix resume race condition on init

2019-02-08T07:28:02+00:00

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 - add ahash support

2018-02-15T15:26:41+00:00

Add CryptoCell async. hash and HMAC support. Signed-off-by: Gilad Ben-Yossef Signed-off-by: Herbert Xu

crypto: ccree - introduce CryptoCell driver

2018-02-15T15:26:40+00:00

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