kernel.git/drivers/misc/mei, branch linux-4.0.y

mei: txe: reduce suspend/resume time

2015-07-21T17:10:12Z

commit fe292283c23329218e384bffc6cb4bfa3fd92277 upstream. HW has to be in known state before the initialisation sequence is started. The polling step for settling aliveness was set to 200ms while in practise this can be done in up to 30msecs. Signed-off-by: Tomas Winkler Signed-off-by: Barak Yoresh Signed-off-by: Greg Kroah-Hartman

mei: me: wait for power gating exit confirmation

2015-07-21T17:10:12Z

commit 3dc196eae1db548f05e53e5875ff87b8ff79f249 upstream. Fix the hbm power gating state machine so it will wait till it receives confirmation interrupt for the PG_ISOLATION_EXIT message. In process of the suspend flow the devices first have to exit from the power gating state (runtime pm resume). If we do not handle the confirmation interrupt after sending PG_ISOLATION_EXIT message, we may receive it already after the suspend flow has changed the device state and interrupt will be interpreted as a spurious event, consequently link reset will be invoked which will prevent the device from completing the suspend flow kernel: [6603] mei_reset:136: mei_me 0000:00:16.0: powering down: end of reset kernel: [476] mei_me_irq_thread_handler:643: mei_me 0000:00:16.0: function called after ISR to handle the interrupt processing. kernel: mei_me 0000:00:16.0: FW not ready: resetting Cc: Gabriele Mazzotta Link: https://bugzilla.kernel.org/show_bug.cgi?id=86241 Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=770397 Tested-by: Gabriele Mazzotta Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: make device disabled on stop unconditionally

2015-03-02T03:34:50Z

Set the internal device state to to disabled after hardware reset in stop flow. This will cover cases when driver was not brought to disabled state because of an error and in stop flow we wish not to retry the reset. Cc: #3.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: me: release hw from reset only during the reset flow

2015-02-03T23:48:51Z

We might enter the interrupt handler with hw_ready already set, but prior we actually started the reset flow. To soleve this we move the reset release from the interrupt handler to the HW start wait function which is part of the reset sequence. Cc: #3.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: mask interrupt set bit on clean reset bit

2015-02-03T23:48:51Z

We should mask interrupt set bit when writing back hcsr value in reset bit clean-up. This is refinement for mei: clean reset bit before reset commit b13a65ef190e488e2761d65bdd2e1fe8a3a125f5 Cc: #3.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: add reference counting for me clients

2015-01-25T17:17:56Z

To support dynamic addition and removal of me clients we add reference counter. Update kdoc with locking requirements. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

Merge 3.19-rc5 into char-misc-next

2015-01-18T22:56:57Z

We want the 3.19-rc5 fixes in here for our testing. Signed-off-by: Greg Kroah-Hartman

mei: use uuid, me_addr tuple addressing also for flow control credits

2015-01-12T13:04:10Z

Add uuid, me_addr addressing also for flow control credits. The only exception in cases for single buffer clients for which the host address in flow credits response is always 0 To in order to deal with add/remove race between fw and driver clients addressing we need to use [uuid, me_addr] tuple to address the clients Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: use ssize_t as the return type for send and receive

2015-01-12T13:04:10Z

Mei bus receive and send function may return either number of transmitted bytes or errno. It is better to use ssize_t type for that purpose that mixing size_t with int. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: clean reset bit before reset

2015-01-09T22:53:13Z

H_RST bit in H_CSR register may be found lit before reset is started, for example if preceding reset flow hasn't completed. In that case asserting H_RST will be ignored, therefore we need to clean H_RST bit to start a successful reset sequence. Cc: #3.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman