From: Tomas Winkler <tomas.winkler@intel.com> To: tpmdd-devel@lists.sourceforge.net, Jason Gunthorpe <jgunthorpe@obsidianresearch.com>, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Cc: linux-kernel@vger.kernel.org, Tomas Winkler <tomas.winkler@intel.com> Subject: [PATCH v3 0/4] tpm/tpm_crb: implement power management. Date: Mon, 12 Sep 2016 16:04:17 +0300 [thread overview] Message-ID: <1473685461-6540-1-git-send-email-tomas.winkler@intel.com> (raw) Te overall platform ability to enter a low power state is also conditioned on the ability of a tpm device to go to idle state. This series should provide this feature. Unfortunately, there is a HW bug on Intel PTT devices on Skylake, Kabylake, and Broxton devices, where certain registers lost retention during TPM idle state. Hence this implementation takes this into consideration and implement the feature based only on access to registers that retain their state. This still conforms to the spec and should be correct also on non Intle devices. V2: Utilize runtime_pm for driving tpm crb idle states. V3. fix lower case corruption in the first patch Tomas Winkler (4): tpm/tpm_crb: implement tpm crb idle state tmp/tpm_crb: fix Intel PTT hw bug during idle state tpm/tpm_crb: open code the crb_init into acpi_add tmp/tpm_crb: implment runtime pm for tpm_crb drivers/char/tpm/tpm-interface.c | 5 ++ drivers/char/tpm/tpm_crb.c | 166 +++++++++++++++++++++++++++++++++------ 2 files changed, 147 insertions(+), 24 deletions(-) -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Tomas Winkler <tomas.winkler-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> To: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>, Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: [PATCH v3 0/4] tpm/tpm_crb: implement power management. Date: Mon, 12 Sep 2016 16:04:17 +0300 [thread overview] Message-ID: <1473685461-6540-1-git-send-email-tomas.winkler@intel.com> (raw) Te overall platform ability to enter a low power state is also conditioned on the ability of a tpm device to go to idle state. This series should provide this feature. Unfortunately, there is a HW bug on Intel PTT devices on Skylake, Kabylake, and Broxton devices, where certain registers lost retention during TPM idle state. Hence this implementation takes this into consideration and implement the feature based only on access to registers that retain their state. This still conforms to the spec and should be correct also on non Intle devices. V2: Utilize runtime_pm for driving tpm crb idle states. V3. fix lower case corruption in the first patch Tomas Winkler (4): tpm/tpm_crb: implement tpm crb idle state tmp/tpm_crb: fix Intel PTT hw bug during idle state tpm/tpm_crb: open code the crb_init into acpi_add tmp/tpm_crb: implment runtime pm for tpm_crb drivers/char/tpm/tpm-interface.c | 5 ++ drivers/char/tpm/tpm_crb.c | 166 +++++++++++++++++++++++++++++++++------ 2 files changed, 147 insertions(+), 24 deletions(-) -- 2.7.4 ------------------------------------------------------------------------------
next reply other threads:[~2016-09-12 13:06 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-09-12 13:04 Tomas Winkler [this message] 2016-09-12 13:04 ` [PATCH v3 0/4] tpm/tpm_crb: implement power management Tomas Winkler 2016-09-12 13:04 ` [PATCH v3 1/4] tpm/tpm_crb: implement tpm crb idle state Tomas Winkler 2016-09-12 13:04 ` Tomas Winkler 2016-09-15 6:22 ` Jarkko Sakkinen 2016-09-15 6:22 ` Jarkko Sakkinen 2016-09-15 6:28 ` Winkler, Tomas 2016-09-15 6:28 ` Winkler, Tomas 2016-09-15 8:20 ` Jarkko Sakkinen 2016-09-15 8:20 ` Jarkko Sakkinen 2016-09-15 8:23 ` Winkler, Tomas 2016-09-15 8:23 ` Winkler, Tomas 2016-09-15 10:53 ` Jarkko Sakkinen 2016-09-15 10:53 ` Jarkko Sakkinen 2016-09-15 13:09 ` Winkler, Tomas 2016-09-15 13:09 ` Winkler, Tomas 2016-09-12 13:04 ` [PATCH v3 2/4] tmp/tpm_crb: fix Intel PTT hw bug during " Tomas Winkler 2016-09-12 13:04 ` Tomas Winkler 2016-09-15 6:23 ` Jarkko Sakkinen 2016-09-27 9:31 ` Jarkko Sakkinen 2016-09-27 9:31 ` Jarkko Sakkinen 2016-09-27 9:54 ` Winkler, Tomas 2016-09-27 9:54 ` Winkler, Tomas 2016-09-12 13:04 ` [PATCH v3 3/4] tpm/tpm_crb: open code the crb_init into acpi_add Tomas Winkler 2016-09-12 13:04 ` Tomas Winkler 2016-09-15 6:24 ` Jarkko Sakkinen 2016-09-12 13:04 ` [PATCH v4 4/4] tmp/tpm_crb: implement runtime pm for tpm_crb Tomas Winkler 2016-09-12 13:04 ` Tomas Winkler 2016-09-14 6:28 ` [PATCH v3 0/4] tpm/tpm_crb: implement power management Winkler, Tomas 2016-09-14 6:28 ` Winkler, Tomas 2016-09-14 16:06 ` Jarkko Sakkinen 2016-09-14 16:06 ` Jarkko Sakkinen 2016-09-14 16:06 ` Jarkko Sakkinen 2016-09-14 16:06 ` Jarkko Sakkinen 2016-09-14 18:25 ` Jarkko Sakkinen 2016-09-14 18:25 ` Jarkko Sakkinen
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