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path: root/drivers/misc/tegra-throughput.c
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2012-09-11video: tegra: host: add idle time estimate in 3dfsIlan Aelion
When a throughput hint is available, still keep track of the idle time percentage and use both in gpu scaling. Also modifying fallback scaling code to use same idle estimate used when a throughput hint is available. Dropping different time frames for scaling up and down. Bug 1034948 Bug 965517 Change-Id: Ib3945642768e36a6c0c50f4195c89e3bb67f8442 Signed-off-by: Ilan Aelion <iaelion@nvidia.com> Reviewed-on: http://git-master/r/129410 (cherry picked from commit 1e9974097286a78f34367683a3921c9b5bf77d4d) Reviewed-on: http://git-master/r/131155 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2012-08-16video: tegra: dc: disuse notifierIlan Aelion
Due to issues with rcu notifiers on secureos, modifying dc flip notifications to use a simple callback instead. Bug 1028850 Change-Id: Iebf2a6d64d7316e3df2b88444201f9f9a29698c5 Signed-off-by: Ilan Aelion <iaelion@nvidia.com> Reviewed-on: http://git-master/r/123103 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Jon Mayo <jmayo@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: Nitin Kumbhar <nkumbhar@nvidia.com>
2012-08-14misc: throughput: move client calls to work queueIlan Aelion
Perform throughput notifications to clients on work queue rather than synchronously to dc flip notifications. Bug 1028850 Change-Id: Ib9446a4ab87a476230a90a1f23c260bcf98e01dc Signed-off-by: Ilan Aelion <iaelion@nvidia.com> (cherry picked from commit f48bec5168232d7a50ecfb193146a4be214af3d7) Reviewed-on: http://git-master/r/#change,122160 Reviewed-on: http://git-master/r/123102 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User
2012-08-09misc: tegra-throughput: warn on short framesIlan Aelion
issue a warning on flip events less than 1 microsecond apart. Bug 1027664 Bug 1028850 Signed-off-by: Ilan Aelion <iaelion@nvidia.com> Reviewed-on: http://git-master/r/121810 (cherry picked from commit 6c0e907b437765fb9f7093599911b71a836d49a6) Change-Id: Ie15256e35475d345b2ebe6ddb637ccc181fcb61e Reviewed-on: http://git-master/r/122326 Reviewed-by: Donghan Ryu <dryu@nvidia.com> Tested-by: Donghan Ryu <dryu@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit
2012-08-08misc: tegra-throughput: prevent race on initIlan Aelion
prevent a race condition on initialization which could result in multiple notifier registrations. Bug 1027664 Change-Id: I2e7dcad159f631a7e244d43019169fdaf195bc34 (cherry picked from commit 06ad60cd85a221eec673654c73d55fba34455a3a) Reviewed-on: http://git-master/r/121143 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Tested-by: Ilan Aelion <iaelion@nvidia.com> Reviewed-by: Michael I Gold <gold@nvidia.com>
2012-08-08misc: tegra-throughput: prevent division by 0Ilan Aelion
Prevent division by 0 on subsequent flip notifications at an interval shorter than 1 micro-second. Bug 1027664 Change-Id: I6e2f886721216fc2479adc1a24504b707c7ebe45 Signed-off-by: Ilan Aelion <iaelion@nvidia.com> (cherry picked from commit 92807179cbbd60be67e09ff40bdaab313e3a55fe) Reviewed-on: http://git-master/r/121142 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Donghan Ryu <dryu@nvidia.com> Reviewed-by: Mayuresh Kulkarni <mkulkarni@nvidia.com> Reviewed-by: Jon Mayo <jmayo@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Michael I Gold <gold@nvidia.com>
2012-07-30video: tegra: host: adding throughput hint in 3dfsIlan Aelion
adding support for using a throughput hint given by the tegra-gfx misc device in the 3d scaling code. If throughput hint usage is enabled and the latest throughput hint is recent enough (less than 1 second old), the throughput hint is used to control 3d frequency scaling. Otherwise the existing idle time percentage estimate is used. Bug 991589 Change-Id: I68893e5ce7ef922b95ce5f5b3664eb8e1fdd4027 Signed-off-by: Ilan Aelion <iaelion@nvidia.com> Reviewed-on: http://git-master/r/116866 Reviewed-by: Lokesh Pathak <lpathak@nvidia.com> Tested-by: Lokesh Pathak <lpathak@nvidia.com>
2012-07-30misc: tegra-throughput: adding throughput dev nodeIlan Aelion
Creates a miscdev at /dev/tegra-throughput which gl will use to set a target frame rate. In addition it receives notifications from dc on flip events. On each notification the percentage ratio of the actual frame time to the target frame time is calculated. In subsequent changes this ratio will be reported to other modules as a throughput hint. Bug 991589 Change-Id: Ieaa2b2755b63d2d071de31e3ef819d4c3b51a956 Signed-off-by: Ilan Aelion <iaelion@nvidia.com> Reviewed-on: http://git-master/r/116865 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Jon Mayo <jmayo@nvidia.com>
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