HWMOD

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Welcome to the HWMOD & Device Driver Adaptations wiki.

Contents

[edit] Introduction

This webpage describes the HWMOD & Device Driver Adaptations software development effort for OMAP3 and OMAP4 platforms. The purpose is to provide information on the current status and features planned in the road map.


[edit] Steps involved in HWMOD


[edit] Plan for Device Driver Adaptation Using HWMOD

The following table gives the schedule for device driver adaptations to HWMOD and tracks the progress.

Device Driver Adaptation to HWMOD - Schedule and Progress

HWMod Activities/ Drivers Applicability Status (Not Started/ Implementation Stage/ Verification Stage/ Submitted/ Review Stage/ Accepted/ Merged) Submission Target Owner
HWMod Database for OMAP3OMAP3Implementation StageNAAll
HWMod Database for OMAP4 ES1.0OMAP4Submitted 7th MayBenoit
HWMod Database for OMAP4 ES2.0OMAP4Implementation StagePost ES2.0 verification (July)Benoit
DMA OMAP3/4Review StageInitial Submission DoneManjunath/ Santosh
GPIO OMAP3/4Review StageInitial Submission DoneCharu
GP-TimersOMAP3/4Verification StageEnd of MayThara
WatchdogOMAP3/4Verification StageEnd of MayCharu
UARTOMAP3/4Submitted for OMAP3End of MayGovindraj
I2COMAP3/4Review StageInitial Submission DoneRajendra
MMC/ SD/ eMMCOMAP3/4Verification StageEnd of MayKishore/ Venkat
SDIOOMAP3/4Implementation StageEnd of MayKishore/ Sukumar
Keypad OMAP3/4Review StageInitial Submission DoneAbraham
McSPIOMAP3/4Verification StageEnd of JuneCharu
McBSPOMAP3/4Not StartedEnd of JuneCharu
EMIFOMAP3/4Not StartedEnd of JulySantosh
MUSBOMAP3/4Implementation StageEnd of JuneHema/ Anand Gadiyar
EHCI OMAP3/4Not StartedEnd of JulyKeshava/ Maulik
OHCI OMAP3/4Not StartedEnd of JulyKeshava/ Maulik
SmartReflexOMAP3/4Submitted for OMAP3End of MayThara
GPMC (should take care of NOR, NAND, OneNAND)OMAP3Not StartedEnd of JulyKishore/ Sukumar
SDRCOMAP3Not StartedEnd of JulyTarun/ Charu
DSSOMAP3/4Implementation StageEnd of July subject to overall code cleanup & successful verificationSenthil/ Mukund
Audio (McPDM, ABE)OMAP3/4Implementation StageEnd of June subject to ongoing audio upstreaming progress & successful verificationJorge (OMAP4) & David (OMAP3)/ Liam
Syslink (Ducati, IVA-HD, Tesla)OMAP3/4Implementation StageEnd of July subject to overall code cleanup, ongoing syslink upstreaming & successful verificationPaul Hunt (OMAP4) & Ohad (OMAP3/ Hari K & Ohad
GFXOMAP3/4Implementation StageEnd of June subject to overall code cleanup, ongoing GFX upstreaming & successful verificationHemant (OMAP4)/ Preshit (OMAP3)/
Networking & Navigation (Connectivity) NeedsOMAP3/4TBDTBDShahed Molla & Benzy Gabay


[edit] HWMOD Framework Enhancements

[edit] Reset Management Support in HWMOD

[edit] More Granular HWMOD Structures

[edit] Multi-level omap_device_idle

Placeholder for patches from Vibhore to support device latency contraint

[edit] Access to HWMOD Internal Data

[edit] Miscellaneous Issues

[edit] Additional HWMOD Enhancements Identified


[edit] HWMOD Dashboard

[edit] HWMOD Framework Changes

Task Owner Target Date State Status Comments & Actions
Pushing OMAP4 ES1.0 HWMOD database to Tony’s tree Benoit 07-May Completed NA None
Modeling multiple resets inputs for few IPs (IVAHD, Tesla, Ducati) in HWMOD database Benoit 14-May Completed None
Developing APIs for sequencing multiple resets Rajendra 14-May Completed None
Integrating with Rajendra's solution and providing the final solution to Ducati team Rajendra 20-May Completed 29 Jun Solution accepted. Awaiting feedback from Ducati Team On track (provided solution; testing by Ducati team in progress). None
Submitting updated OMAP4 ES2.0 HWMOD database to internal tree Benoit(OMAP4) 15-July Completed None
Fixing any HWMOD database related issues pertaining to driver PM adaptations Benoit 31-Jul Ongoing Long term support activity None
Extending h/w Mod database to model components with hierarchies like DSS (DSI, HDMI, RFBI) etc. Benoit, Senthil & Partha New: 21-Jul Old: 15-July In progress 21-Jul: Partha and Senthil debugged, reviewed and fixed issues; final patches are expected on 21-Jul 14-Jul: Reviewed OMAP3 database. 07-Jul: Debugging in progress; expected to be completed by 09-Jul 30 Jun OMAP3 patches under development by Senthil

02 Jun OMAP4 patches provided by Benoit

None

[edit] Platform & Power Drivers

Task Owner First Submission Target Date State Status Comments & Actions
GPIO Charu 31-May Accepted 07-Dec: Basic hwmod is accepted in l-o and it will be part of 2.6.38 merge window. The cleanup and runtime pm changes are planned in the next series.
11-Aug: Submitted V5. Working on review comments.
04-Aug: Submitted to L24.9. Submission of V5 to list planned by 04-Aug.
27-Jul: On track for L24.9, plan to submit to Kevin by 31-Jul.
21-Jul: Fixing PM runtime comments, rebasing for 2.6.35 & testing on omap4_next-wip in progress; target 26-Jul
30-Jun: Cleanup series planned for Aug
23-Jun: No new comments; but need to plan GPIO cleanup as a separate series
16-Jun: Waiting for acceptance
07-Dec: Cleanup and runtime pm changes as planned in the next series.
Watchdog Charu & Shubro 31-May Accepted 07-Dec: Already in mainline
18-Aug: Submitted V2 11-Aug: Submission of V2 delayed to 11-Aug to address final comments. 04-Aug: Submitted to L24.9. Submission of V2 to list planned by 04-Aug. 27-Jul: On track for L24.9, plan to submit to Kevin by 31-Jul. 21-Jul: Rebasing for 2.6.35 & testing on omap4_next-wip in progress; target 26-Jul 14-Jul: Tested V2 on internal omap4-next branch; testing on pm-wip/hwmods-omap4 branch is in progress. Patch submission will be done after that. 30-Jun: Testing of V2 under progress; target 02-Jul 23-Jun: Patch set ready; Testing on OMAP4 to be carried out by Shubro. 16-Jun: Fixed comments received; will be posted on 18-Jun
None
GP Timers Thara & Tarun 31-May Submitted V7 (20-Dec-2010) 30-Dec: Review and rework is under progress
18-Aug: Posted V211-Aug: Submission of V2 planned by 13-Aug. 04-Aug: Submitted to L24.9. Some debugging in progress. Submission to list planned by 13-Aug. 27-Jul: On track for L24.9, plan to submit to Kevin by 14-Aug. 21-Jul: Fixing PM runtime comments, rebasing for 2.6.35 & testing on omap4_next-wip in progress; target 26-Jul 14-Jul: Tarun working on the review comments. Plannning to post V2 by 23rd Jul 30-Jun:Nothing to update 23-Jun: Review comments received; Work will be done by Tarun by 10-Jul 16-Jun: Waiting for comments
None
UART Govindraj 31-May Accepted 14-Dec: HWMOD got accepted as part of 2.6.37 merge window. Runtime PM is planned for 2.6.39 merge window. 11-Aug: V3 Submission addressing usage of mutex-free version _omap_hwmod_enable() in Idle path based on irqdisabled check planned by 20-Aug. 04-Aug: Submitted to L24.9. Submission to list planned by 06-Aug. 27-Jul: HWMOD on track for L24.9, plan to submit to Kevin by 31-Jul. PM Runtime to be planned after this 14-Jul Started working on PM runtime. 07-JulWaiting for acceptance of current patch-set which supports hwmod without using RunTime PM framework. 30-Jun Submitted V2 as per the plan 23-Jun: Additional review comment regarding a corner case being fixed; will be posted 02-Jul 16-Jun: Waiting for acceptance UART(OMAP Serial) driver is not merged in kernel.org yet. As a first step, functional driver with hwmod are posted. Runtime PM feature will be introduced as a second step once the driver is upstream. However, PM Runtime changes will be available internally in 15-Aug 2010 timeframe.
I2C Rajendra 31-May Accepted 20-Dec: Will be merged in 2.6.38. 11-Aug: Submitted V2. 04-Aug: Submitted to L24.9. Submission to list planned by 04-Aug. 27-Jul: On track for L24.9, plan to submit to Kevin by 31-Jul. 21-Jul: Rebasing for 2.6.35 & testing on omap4_next-wip in progress; target 26-Jul 14-Jul: Pending testing on OMAP4 on pm-wip/hwmods-omap4 branch. 30-Jun: Nothing to update 23-Jun: Patches are ready with run time PM & tested internally; need to have I2C support for OMAP4 on Kevin's HWMOD branch 16-Jun:Slipped due to workshop & wakeup travel; new date TBD None
MMC & SDIO Kishore & Sukumar 31-May Submitted V1 14-Dec: Will be taken up in the next merge window. 18-Aug: V2 on track for 20-Aug posting; recent discussions in LO indicate that more cleanup may be needed in present upstream MMC driver 11-Aug: V2 Submission planned by 20-Aug. 04-Aug: Submitted to L24.9. Submission to list planned by 13-Aug. 27-Jul: Testing in progress, WA on hw issue in progress 21-Jul: Debugging continues; risk of 1 week delay 14-Jul: Stress testing with Runtime PM revealed race conditions in MMC driver impacting functionality. Debugging in progress. 07-Jul: V2 to be submitted by 16-Jul with some comments from PM workshop fixed. V3 will have further enhancements (w.r.t Suspend Resume). SDIO testing will be done internally in parallel. 30-Jun: Work in progress 23-Jun: Additional work needed per PM workshop camp; essential will be done by 09-Jul 16-Jun:Work in progress None
Keypad Abraham New: 16-Jul Old: 31-May Under Development 04-Jan 2011: Planned for 2.6.39 merge window 18-Aug: V1 planned by 20-Aug, deleyed due to release testing. 11-Aug: V1 Submission planned by 16-Aug. 04-Aug: Submitted to L24.9. Submission to list planned by 13-Aug. 27-Jul: On track for L24.9, plan to submit to Kevin by 31-Jul. 21-Jul: Fixing comments; rebasing for 2.6.35 & testing on omap4_next-wip in progress; target 26-Jul 07-Jul: Delayed due to wakeup 30-Jun: Runtime PM support addition is in progress; May get delayed to 16-Jul due to ongoing ES2.0 wakeup 23-Jun: Wakeup delayed completion of PM runtime APIs, new target 02-Jul 16-Jun: Target 23-Jun 30-Jun: Submitted Keypad HWMOD changes series V1 without runtime PM which is pending.
McBSP Charu & Kishon New: 30-Aug Old: 31-Jul, 30-Jun Under Development 04-Jan 2011: Planned for 2.6.39 merge window 14-Dec: Planned for 2.6.39 merge window. 18-Aug: HWMOD changes are completed; Runtime PM chanegs are almost done 11-Aug: V1 submission by 30-Aug. 04-Aug: Analysis in progress. Requires significant cleanup & new HWMOD definition for sidetone. Yet to asses target date.27-Jul: Yet to start 21-Jul: Working to mobilize more resources and finish it earlier 30-Jun: Owner changed to Kishon from Charu. Kishon to ramp up and start implementation16-Jun: Target 23-Jun Needs replan
McSPI Charu & Govindraj New: 31-Jul Old: 30-Jun Submitted V2 04-Jan 2011: Planned for 2.6.39 merge window 14-Dec: McSPI submitted to LO.18-Aug: Submitted V1, has dependency on McSPI Slave mode patches which are also posted and are under review 11-Aug: V1 planned by 20-Aug. 04-Aug: Submitted to L24.9. Submission to list planned by 13-Aug. 27-Jul: On track for L24.9, plan to submit to Kevin by 15-Aug. 21-Jul: On track; target 26-Jul 14-Jul: Undergoing internal review 07-Jul: Submission planned before 14 Jul 30-Jun: Owner changed to Govindraj from Charu. Internal review done. After incorporating comments, 1st set of submission to LO expected by 02-Jul 16-Jun: Target 23-Jun None
USB:MUSB Hema New: 31-Jul Old: 30-Jun Submitted V2 04-Jan 2011: Planned for 2.6.39 merge window 14-Dec: Planned for 2.6.39 merge window. 18-Aug: Fixing of review comments on V1 is in progress; will be reposted by 18-Aug 11-Aug: Review rework in progress. 04-Aug: Submitted to L24.9. Submission to list planned by 10-Aug. 27-Jul: On track for L24.9, plan to submit to Kevin by 15-Aug. 21-Jul: review and rework in progress; rebasing ongoing; target 30-Jul 14-Jul: HWMOD + PM Runtime implementation completed. OMAP3 CORE OFF validation using Runtime PM in progress based on Kevin's PM branch(omap3_pm_defconfig). OMAP4 testing going on in parallel. Plan to send out patches for review by 23-Jul. 07-Jul: Hwmod framework API changes to take care of corner cases aligned internally. These changes will be circulated internally for review along with Run-Time PM changes on 07-Jul. 30-Jun: Risk Potentail enhancement of hwmod functions needed to cover errata scenarios. Also some h/w issues are being worked upon. Initial submission with PM runtime is targeted 09-Jul. Necessary hwmod framework change patches will also be suggested along with these changes. 16-Jun:HwMod changes reviewed internally, PM-Runtime changes in progress. None
Smart Reflex Thara 30-Jun Submitted V5 04-Jan Queued for merging in 2.6.38 10-Dec: Review is under progress
18-Aug: 11-Aug: V2 planned by 13-Aug. 07-Jul: V1 with hwmod changes submitted. PM Runtime needs to be implemented. Pending comments from key people, who are currently on vacation.
None
USB:EHCI Keshava New: 15-Sep Old: 31-Jul Under Development 14-Dec: Planned for 2.6.39 merge window. 18-Aug: work started; targeting 15-Sep posting 04-Aug: Slipped. Yet to start.27-Jul: 1st milestone at Risk 07-Jul Initialization of the driver platform data using hwmod database will be taken up as the first step, should be available for submission by 31-Jul. Enabling the Run-Time PM will be taken up once the functional driver is upstreamed. However, RunTime PM feature will be available internally for review earlier. Risk hw issues may impact upstreaming functional driver. Needs replan
USB:OHCI Keshava New: 15-Sep Old: 31-Jul Under Development 14-Dec: Planned for 2.6.39 merge window. 18-Aug: work started; targeting 15-Sep posting 04-Aug: Slipped. Yet to start. 27-Jul: 1st milestone at Risk 07-Jul Initialization of the driver platform data using hwmod database will be taken up as the first step, should be available for submission by 31-Jul. Enabling the Run-Time PM will be taken up once the functional driver is upstreamed. However, RunTime PM feature will be available internally for review earlier. Risk hw issues may impact upstreaming functional driver. Needs replan
DMA Manju 31-Jul Accepted 10-Dec: DMA hwmod patches are queued in l-o for merging. Will be merged in 2.6.38. Cleanup, adopting runtime pm changes will be planned in the next series.
18-Aug: Plan to post V2 by 24-Aug 11-Aug: Review rework in progress. 04-Aug: Submitted to L24.9. Submission to list done. 27-Jul: On track for L24.9, plan to submit to Kevin by 15-Aug. 21-Jul: Review and rebasing in progress; on track 14-Jul: Posted RFC patches after testing on OMAP3 using pm-wip/hwmods-omap4 branch. OMAP4 testing inprogress on omap4-next.07-Jul Changes will be available for review internally on 09-Jul.
None
GPMC Sukumar & Santosh 31-Aug Not Started None
SDRC Tarun & Santosh 31-Aug Not Started None
EMIF Tarun & Santosh 31-Jul Completed 11-Aug: HWMOD is implemented, but the driver functionality is work in progress.04-Aug: Submitted to L24.9. Submission to list due 13-Aug21-Jul: Completed the implementation and review None

[edit] Multimedia Drivers

Task Owner Target Date State Status Comments & Actions
Audio Jorge (OMAP4) & David (OMAP3) 09-Jul Under Development 11-Aug: Component test in progress. 04-Aug: Code changes are ready. Debugging in progress on L24.9 kernel. 21-Jul: Would need revalidation as Audio driver is undergoing significant changes. Final validation to go beyond 31-Jul 14-Jul: Review comments incorporated including Runtime PM changes. Audio team can go ahead with posting these patches. 07-Jul: 09-Jul Risk. Review comments covering Suspend/Resume Runtime Suspend/Runtime Resume are being implemented. 30-Jun: Risk More Internal review comments provided. Revised date for submission: 09-Jul23-Jun:Internal review comments provided. 16-Jun: Nothing to update None
DSS Senthil 31-Jul Prototype 18-Aug: RFC patches planned for 20-Aug. Delayed as DSS/DSS HWMOD on 2.6.35 broken. 11-Aug: DSS HWMOD chanages submitted on L24.9. Debugging/Validation in progress. Internal review done. Plan to submit RFC patches for community review by 16-Aug. 04-Aug: OMAP3 HWMOD RFC patches under internal review; target 06-Aug for external posting. OMAP3 HWMOD patches successfully migrated & validated on OMAP4 - going in L24.9. PM Runtime API support is under development 27-Jul: OMAP3 RFC patch-set under internal review. Changes migrated to OMAP4 and floated for internal review. 21-Jul: RFC patches working on OMAP3 expected today COB for internal review. Review & aligning on the final design to go in parallel to testing these patches on OMAP4. 14-Jul: DSS rearchitecture being prototyped on OMAP3. Planning to send first set of RFC patches by 19-Jul to the stake-holders for design review. Final design decision may get delayed due to key stake-holders being on vacation. Mayuresh is porting the work done on OMAP3 to OMAP4 in parallel.30-Jun: Risk Had design brainstroming with maintainers. Senthil to circulate early patchset to explain design. Risk:Time needed to solve to solve technical problems associated to one-driver multiple-device apporach. 23-Jun:Senthil created database for OMAP316-Jun: Reviwed in camp. To organize more brainstorming meetings with maintainers. Need to have multiple platform drivers for DSS subcomponents. Need to have DSS database for OMAP3 as well None
SGX Hemant (OMAP4)/ Preshit (OMAP3) 31-Jul Under Development 04-Aug: PM Runtime debugging in progress. 27-Jul: Debug in progress 21-Jul: HWMOD Clock/Enable-Disable debugging in progress 14-Jul: Nothing to update this week. Needs prioritization, if there is any conflict. Review meeting planned. 30-Jun: Risk. Reviewed hwmod implementation. PM-runtime pending implementation 23-Jun: 16-Jun: Performance Impact of Runtime PM framework a concern

[edit] Bridge/Link Drivers

Task Owner Target Date State Status Comments & Actions
SysLink Paul Hunt & Hari K (OMAP4) & Ohad (OMAP3/ Hari K & Ohad 31-Jul Under Development 11-Aug: Validation on latest hwmod changes from Benoit in progress. 04-Aug: All Ducati & ISS issues resolved. HWMOD database changes & Diucati changes are ready; undergoing validation. Planned for L24.9 21-Jul: IVAHD validation in progress. ISS changes needed for HWMOD, dependency on Benoit. 14-Jul Runtime PM changes in progress for Ducati. Exploring the possibility of completing the final review for Ducati-Syslink by 23-Jul. HWMOD for IVAHD & ISS in progress. 07-Jul: SysLink tests on Ducati are fine with HWMOD patches shared offline covering RST functionality. 30-Jun: 23-Jun: 16-Jun: 19-May On track (provided solution; testing by Ducati team in progress) Requirement for HWMOD enhancements to support reset of non cores Ducati, IVAHD outside of A9

[edit] Networking & Navigation Drivers

Task Owner Target Date State Status Comments & Actions
Networking & Navigation Shahed Molla & Benzy Gabay/Sukumar, Govindraj 31-Aug Not Started 27-Jul: Dependent on SDIO & UART driver. Pending code review. 14-Jul Pending code review to rule out any direct access of OMAP SYSCONFIG registers, clokcs etc from networking/navigation drivers. Dependency on UART & MMC readiness in platform and power; inactivity timers need to be propagated from OMAP3 to OMAP4 connectivity code. The networking components should not need any change as such. All changes should be confined to the drivers (SDIO, UART) called by these components
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