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path: root/arch/arm/mach-tegra/dma.c
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2012-04-20ARM: tegra: dma: Use no DMA interrupts if no callbacksChaitanya Bandi
If there are no callbacks associated with the request, dma interrupt is not enabled. Bug 969125 Change-Id: Ifbf2a8d6c474187927ee38af03cb96e53e199b83 Signed-off-by: Chaitanya Bandi <bandik@nvidia.com> Reviewed-on: http://git-master/r/96724 Reviewed-by: Automatic_Commit_Validation_User Tested-by: Sumit Bhattacharya <sumitb@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
2012-04-18ARM: tegra: dma: Add API to get channel idChaitanya Bandi
Added tegra_dma_get_channel_id API to determine the id of a given channel. Bug 969125 Change-Id: Ibad67d65c87dc267a4e6942557c02acbd0f6e938 Signed-off-by: Chaitanya Bandi <bandik@nvidia.com> Reviewed-on: http://git-master/r/96714 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Sumit Bhattacharya <sumitb@nvidia.com>
2012-04-03ARM: tegra: dma: Update actual bytes_transferred in dma cancelLaxman Dewangan
When canceling dma, updating actual bytes transferred by dma, making all requests status to aborted and deleting from channel request queue. Change-Id: I860780814340d54465de5b2ae11a6895319f428c Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/90815 Reviewed-by: Automatic_Commit_Validation_User
2012-04-03ARM: tegra: dma: enum for initial status of dma reqLaxman Dewangan
Adding new req status TEGRA_DMA_REQ_PENDING. This will be initial status of the request when enqueued. Change-Id: I67ee71dd0c64b6398305b86fbf186488f062e876 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/93801 Reviewed-by: Automatic_Commit_Validation_User
2012-03-09ARM: tegra: dma: Return ERROR_STOPPED if dma stopped.Laxman Dewangan
The dma will be stop in continuous mode with following reason: - There is no next request and dma restarted the same buffer as it was last transfer. - The buffer size was not enough and so latency to serve dma interrupt is more than buffer transfer time and hence buffer completed before interrupt served. In the above cases, dma actually transfer more than requested size. Returning correct transferred data in byte transferred and return request status as ERROR. Change-Id: I7046e0935b7261475a0f6ed49e40a6f1b86d72ec Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/86002 Reviewed-by: Stephen Warren <swarren@nvidia.com>
2012-03-06ARM: tegra: dma: Check request size before enqueuing requestsLaxman Dewangan
The request size should be multiple of 4 bytes in ONE_SHOT and CONTINUOUS_SINGLE mode and multiple of 8 bytes in case of CONTINUOUS_DOUBLE mode. Change-Id: Iedb7a75eedda58f4f9b5c6d072ef2edb7ee657d4 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/87994 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
2012-03-06ARM: tegra: dma: Coding style and general cleanupsLaxman Dewangan
Some cleanups: - Copyright year change - Properly aligned macro. - Defined function as static if used only in file. - Move the macro from header to file if it is only used in driver. - Returning proper status on callbacks. - Adding some more comments in code. - Rewritten some piece of code for better readability. Change-Id: I778752668a67b849859fd7e0c11f2b7a3f3b1edc Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/87993 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
2012-03-06ARM: tegra: dma: Fix multiple time request deletionLaxman Dewangan
When doing the cleanups in isr, the request was deleted two times after full buffer completion on double buffering of dma mode. Removing extra request deletion. Change-Id: I6ef30b67d5d73bbc1d7a479d75b8e6ccba6a6f0a Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/87992 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
2012-03-06ARM: tegra: dma: Implement clock gating on suspend/resumeLaxman Dewangan
Disabling clock of apb dma in suspend and enabling back on resume. Change-Id: I6320072ea25565bcab4833c9b10dcb6a9d526ac6 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/87991 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
2012-03-06ARM: tegra: dma: Use correct clock device for resetting dma.Laxman Dewangan
The clock name is "tegra_dma" for getting proper clock structure and using this for resetting dma. Change-Id: I44819ccc25d42f15b14a42d6616c776fa1ad95ec Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/87990 Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
2012-03-02ARM: tegra: dma: Initialize isr handler when it is allocatedLaxman Dewangan
Initialize the interrupt handler of dma channel when it is allocated. De-initialize when the allocated channel get free. Change-Id: Ic813cb28492cc26907d0fcfdf573600a586d1c63 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/87231
2012-03-02ARM: tegra: dma: cleanups in isr handlersLaxman Dewangan
Use the helper function for starting head request from queue/configuring the next request from transfer in place of doing it in multiple places. This removes the duplicating of code in multiple places. Change-Id: I273f6666a1cd2debcdab56593aa9bf0e9c50318d Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/86914 Reviewed-by: Stephen Warren <swarren@nvidia.com>
2012-03-02ARM: tegra: dma: Call callback from main isrLaxman Dewangan
In order to avoid the passing of the spin lock irq flags to different isr handler, calling the callbacks from main isr itself. Callback function should be call without spin lock. Change-Id: I9e9980cef5d1de4dd4e31b8ef5fdff223b77bb22 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/86873 Reviewed-by: Stephen Warren <swarren@nvidia.com>
2012-03-01ARM: tegra: dma: define global dma address only onceLaxman Dewangan
Define the global address as static global in file and uses this in different functions. This way, it will avoid the same definition at multiple functions. Change-Id: I71d7ec075c70356c52ae9ce36339b4b9cc082f70 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/86872 Reviewed-by: Stephen Warren <swarren@nvidia.com>
2012-02-28ARM: tegra: dma: Pause dma before configuring dma for next transferLaxman Dewangan
The apb dma supports next transfer configuration before current on-going transfer completes in continuous mode. The new configuration require multiple register programming and need to be done before last burst completed. Just after last transfer completes, the new configure data is reloaded. To make this configuration atomic, pausing the dma during configuration so that last burst should not be happen and dma engine should not re-load new configuration when it was on a way. bug 937142 Change-Id: I15b62394df10c97ca21c0d7905fedc7e7c2872b7 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/84292 Tested-by: Pradeep Goudagunta <pgoudagunta@nvidia.com> Tested-by: Bandi Krishna Chaitanya <bandik@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com>
2012-02-23ARM: tegra: dma: Calculate transferred count based on req sizeLaxman Dewangan
In order to get the correct the transferred count done by dma, use the requested size from client request instead of transfer count programmed on dma. Change-Id: I6d78b0435820ecb1db4b2de2569a2f9d728b2d05 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/77795 Reviewed-by: Simone Willett <swillett@nvidia.com> Tested-by: Simone Willett <swillett@nvidia.com>
2012-02-23ARM: tegra: dma: Clear dma interrupt status with lock heldLaxman Dewangan
The dma interrupt status should be cleared with spin lock held to provide the proper synchronization between get_channel_status() and dma isr. The interrupt status flag is used to get the transferred data done by dma and hence the status check and transfer count update should be atomic. Change-Id: I9c60f818e95eb32b362abea1afe19c92a23e6827 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/79191 Reviewed-by: Simone Willett <swillett@nvidia.com> Tested-by: Simone Willett <swillett@nvidia.com>
2012-02-14ARM: tegra: dma: code cleanups and run checkpatchLaxman Dewangan
Fixed the checkpatch error and doing code cleanups. Change-Id: Ice966d80e4b7175b72ce218197f6ff5ebd7d8c67 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/79404 Reviewed-by: Automatic_Commit_Validation_User
2012-02-03ARM: tegra: dma: Remove duplicate function tegra_dma_dequeue()Laxman Dewangan
The functon tegra_dma_dequeue() duplicates the functionality of tegra_dma_dequeue_req().And this function does not use proper locking before accessing the channel data. Removing this function. Change-Id: Ib6baaa984b038908c49adb3a0f3df3433f0a9066 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/77805 Reviewed-by: Rohan Somvanshi <rsomvanshi@nvidia.com> Tested-by: Rohan Somvanshi <rsomvanshi@nvidia.com>
2012-02-03arm: tegra: dma: read transfer count without stopping dma.Laxman Dewangan
Dma user must call the function tegra_dma_get_transfer_count() for knowing transferred count without stopping dma. Change-Id: I5e0060fd8163b285496442268548a90bdd0e294c Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/77800 Reviewed-by: Rohan Somvanshi <rsomvanshi@nvidia.com> Tested-by: Rohan Somvanshi <rsomvanshi@nvidia.com>
2012-01-20DTV: dma: fixed dma burst size issue DTV xmitAdam Jiang
Since dtv interface was designed based on SPI bus, it shares the same dma configuration with SPI bus. However, it is not proper because DTV interface has to transmit data in 4 words long constantly. The patch added an option in tegra_dma_req to set burst size to be fixed 4 words. fixed Bug 910227 Change-Id: I1436f0c8d108dd39edc57ae4c9cb750d9574b62c Reviewed-on: http://git-master/r/75509 Reviewed-by: David Schalig <dschalig@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Adam Jiang <chaoj@nvidia.com> Signed-off-by: Varun Wadekar <vwadekar@nvidia.com> Reviewed-on: http://git-master/r/76461 Reviewed-by: Automatic_Commit_Validation_User
2012-01-19tegra: dma: add missing error return valueDavid Schalig
- add missing error code - remove duplicate define Bug 919369 Bug 919338 Change-Id: I03012050f3b6c4b7bda69657fdd5cb533dcd937e Signed-off-by: David Schalig <dschalig@nvidia.com> Reviewed-on: http://git-master/r/74521 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Scott Peterson <speterson@nvidia.com> Reviewed-on: http://git-master/r/75544 Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> Tested-by: Varun Wadekar <vwadekar@nvidia.com>
2011-11-30arm:tegra: Add EXPORT_SYMBOL and ioctls for test frameworkRahul Mittal
Added EXPORT_SYMBOL to functions to be used by loadable kernel module for audio test framework. Also added ioctl declarations for the same. Change-Id: Id8a023c1d76fd031c042c7c663bb0e1df2d33b5c Reviewed-on: http://git-master/r/52333 Tested-by: Rahul Mittal <rmittal@nvidia.com> Reviewed-by: Vijay Mali <vmali@nvidia.com> Reviewed-by: Scott Peterson <speterson@nvidia.com> Rebase-Id: Rfdc9fd3b9a42b2ee601c273480f9986ab897f046
2011-11-30ARM: tegra: power: Use CONFIG_PM_SLEEP instead of CONFIG_PMScott Williams
For Linux 2.6.39, CONFIG_PM_SLEEP is the proper kernel configuration parameter to use on Tegra for power management, and not CONFIG_PM. CONFIG_PM does not have the required dependency on CONFIG_SUSPEND necessary to pull in the CPU suspend/resume functionality used by Tegra. Also fixes compilation errors when CONFIG_PM and by implication CONFIG_PM_SLEEP are not configured. Change-Id: I8bb380ae7c6b22759bfbc223febc28f585111aad Reviewed-on: http://git-master/r/40458 Tested-by: Daniel Willemsen <dwillemsen@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com> Rebase-Id: R61d656cd67439aa9f466c381845d7a4685fc8648
2011-11-30arm: tegra: Clean up SOC conditionalsScott Williams
Change SOC conditionals to make them more forward-looking. Original-Change-Id: Ib60db4e690c2f396afdec962616d735548b5a8a9 Reviewed-on: http://git-master/r/32706 Reviewed-by: Niket Sirsi <nsirsi@nvidia.com> Tested-by: Niket Sirsi <nsirsi@nvidia.com> Rebase-Id: R77c675a1995116098b58f1f775bc7c3cc8722998
2011-11-30arm: tegra: dma: Adding debug fsLaxman Dewangan
Adding the debug fs interface to watch the dma registers from user space. Original-Change-Id: I42204b0fdd2aa201006c4cc96d2448aa24b98fc5 Reviewed-on: http://git-master/r/29624 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Rebase-Id: R824c47307c3fa8ae01e29def4fca3924a6815c5b
2011-11-30arm: tegra: dma: Adding client name with dma allocation.Laxman Dewangan
By changing the dma allocation API to take the client name, it is easy to track who is allocated the DMA channels when we run out of the DMA channels. Original-Change-Id: I016011cfd74089fed0da1bc0f121800017ce124a Reviewed-on: http://git-master/r/28031 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Original-Change-Id: I048bcb87f95ee6d8ad2fdce993a1758dc5071666 Rebase-Id: R08ce682381dad3170a335f47333f0a6afb8d4579
2011-11-30dma: tegra: Resetting apb dma during kernel initLaxman Dewangan
Resetting the apb dma controller and enabling the clock of the apb dma controller during kernel initialization. Making necessarily entry for the apb dma clock in clock table. Original-Change-Id: Ifaed5a70ed06b162a5015a2eae8bb444b43178c4 Reviewed-on: http://git-master/r/27873 Reviewed-by: Niket Sirsi <nsirsi@nvidia.com> Tested-by: Niket Sirsi <nsirsi@nvidia.com> Original-Change-Id: If66c96a5e9cd015086f4d407ed9fc9bd99b6b29f Rebase-Id: R7a8cd4e1f6e3df6bed0f3dbc105bb2c349f9a6cc
2011-11-30Update copyrightsScott Williams
Original-Change-Id: I2ffeaf6f8dfeb279b40ca6f69f6c9157401a746a Rebase-Id: Rd8ebde470ad475b826857413018a2da8e1fdea25
2011-11-30arm: tegra: dma: setting burst for i2s client based on req sizeLaxman Dewangan
Setting burst size of dma based on the transfer size for the client i2s for tegra3 architecture. Setting burst to 4 word for tegra2 architecture. bug 796817 Original-Change-Id: I6c9e4ab775fb23d51207084b231745fc7a4f60d8 Reviewed-on: http://git-master/r/21102 Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com> Tested-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Original-Change-Id: Ib5c639bb33d2a05060ff62bc75a2e43f655310f9 Rebase-Id: R9c6e81845fbaf3f25f395500e307474d0885bce2
2011-11-30arm: tegra: Enable Tegra3 APB DMA channels 16-31Scott Williams
Original-Change-Id: Ia098e22789f4817e14ac34de01f8d990b4b4d29b Reviewed-on: http://git-master/r/15975 Tested-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: If9677ac2190d8d2266ee40d011f5841e97838522 Rebase-Id: R2a64c748b9d73d8c833ef09aa3c7d19b7eee532b
2011-11-30Merge remote branch 'git-master/android-tegra-2.6.36' into merge-androidJin Qian
Conflicts: arch/arm/configs/tegra_defconfig arch/arm/mach-tegra/Kconfig arch/arm/mach-tegra/Makefile arch/arm/mach-tegra/board-ventana-power.c arch/arm/mach-tegra/board-ventana-sensors.c arch/arm/mach-tegra/board-ventana.c arch/arm/mach-tegra/clock.c arch/arm/mach-tegra/common.c arch/arm/mach-tegra/cpu-tegra.c arch/arm/mach-tegra/fuse.c arch/arm/mach-tegra/headsmp.S arch/arm/mach-tegra/tegra2_dvfs.c arch/arm/tools/mach-types drivers/rtc/rtc-tegra.c drivers/usb/gadget/fsl_udc_core.c drivers/video/tegra/host/dev.c drivers/video/tegra/host/nvhost_channel.c drivers/video/tegra/host/nvhost_intr.c Original-Change-Id: I1e9b6d0e761cf1e95cf90b78b5932b53fcb9bb5e (cherry picked from commit 2f331e046f7c4cfc6ab54fca3193035b3bf3a14f) Reviewed-on: http://git-master/r/14572 Reviewed-by: Scott Williams <scwilliams@nvidia.com> Tested-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I29db8796b2e27a8d218c332de36f880a7cf4bcb2 Rebase-Id: R54dfb0d8e2534ea0c13c1157933d30a4198acbbf
2011-11-30[ARM/tegra] Add Tegra3 supportScott Williams
Bug 764354 Original-Change-Id: I8a390eb4dae87dceacb97461f23d13554868b046 Reviewed-on: http://git-master/r/12228 Reviewed-by: Scott Williams <scwilliams@nvidia.com> Tested-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I8e6b8303898796419fb5a759cd16edff9aeac081 Rebase-Id: R2866240384c6c24f46bd7ef54bc3dc9140d9e96b
2011-11-30arm: tegra: dma: Api for getting transfer countLaxman Dewangan
Adding api for getting the amount of data trsnaferred by dma. Original-Change-Id: I348b8a2f0f855165fb1bf74f0d9013faa97056e7 Reviewed-on: http://git-master/r/20377 Tested-by: Sumit Bhattacharya <sumitb@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: Raf91b00545ff2e61f14c7136972d807c6afb96ea
2011-11-30[tegra:dma] set dma burst size for spi/slinkminwuklee
for spi/slink, depending on transfer size, burst size can be set to 1, 4, or 8. bug 747979 Original-Change-Id: Ieae0285d374e7d0eb6c2c2e633f8cafbb2b51b3a Reviewed-on: http://git-master/r/12076 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Tested-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: Rf90c38d753a6408ade4312adcd02c574eb3b1a57
2011-11-30[tegra:dma] set dma burst size for spi/slinkminwuklee
for spi/slink, set dma burst size based on transfer size. bug 747979 Original-Change-Id: I8c3c0a0410648a25190847590b9ac0304fb1105f Reviewed-on: http://git-master/r/11752 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Tested-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: R2549b6684bdb45c0c277f64f0a60de937f406b4e
2011-11-30Revert "ARM: tegra: dma: Do not call complete callback on canceled requests"Dan Willemsen
This reverts commit 5dba29d1f761502e75320770fc4c6cf9c8e00998. Rebase-Id: Rb6889e4755716f5baa5c7f272ae7d8c8b6d97ba5
2011-11-30ARM: tegra: pm: save/restore ahb bus registersBenoit Goby
Submitted on behalf of Jay Cheng <jacheng@nvidia.com> Modified to use syscore_ops Change-Id: Ic8a3a9559634eb3f1f0e4b40a2d8502d20d606d6 Signed-off-by: Benoit Goby <benoit@android.com>
2011-11-30ARM: tegra: dma: Do not call complete callback on canceled requestsColin Cross
Calling the complete callback when a request is cancelled leads to locking problems in the callback, which could be called from an IRQ with no locks held, or from whatever context called tegra_dma_dequeue_req. Instead, expect the caller to handle the now-cancelled request as needed. Also removes tegra_dma_dequeue, since all users can be trivially converted to tegra_dma_dequeue_req. Change-Id: If699239c09c78d1cd3afa0eaad46535b1d401a24 Signed-off-by: Colin Cross <ccross@android.com>
2011-11-30[ARM] tegra: dma: Remove spam logChris Fries
"Interrupt during enqueue" happens periodically when the DMA is almost starving. This happens under certain not- uncommon scenarios. Signed-off-by: Iliyan Malchev <malchev@google.com>
2011-11-30[ARM] tegra: dma: Single buffered continuous DMAChris Fries
- Added "single buffer continuous DMA" mode in addition to the "double buffer continuous DMA" mode that is already implemented - Changed the queuing of next buffer to be more flexible for continuous DMA. It can now get in-flight right after a transfer starts, or whenever the client enqueues a buffer. Signed-off-by: Iliyan Malchev <malchev@google.com>
2011-11-30[ARM] tegra: dma: switch to nonthreaded interruptsIliyan Malchev
Signed-off-by: Iliyan Malchev <malchev@google.com>
2011-11-30[ARM] tegra: dma: expose TEGRA_DMA_MAX_TRANSFER_SIZE, fix typoIliyan Malchev
NV_DMA_MAX_TRASFER_SIZE --> TEGRA_DMA_MAX_TRANSFER_SIZE Signed-off-by: Iliyan Malchev <malchev@google.com>
2011-11-30[ARM/tegra] dma: add transfer count query. Checking interrupt pending status.Jay Cheng
Stopping Dma after last req transfer. add an API to return the completed transfer count of a pending, active or finished DMA request originally fixed by Gary King <gking@nvidia.com> It is observed that the dma interrupt has the lower priority then its client interupt priority. When client's isr calls dma get transfer, the dma status has not been upated as dma isr have not been served yet. So before reading the status, explicitly checking the interrupt status and handling accordingly. The another issue which is observed is that if dma has transferred the data of amount = requested -4 and if it moves to invalid requestor before stopping then status got reset and tarnsfered bytes becomes 0. This seems the apb dma hw behavior. Following is the suggestion to overcome this issue: - Disable global enable bit. - Read status. - Stop dma. - Enable global status bit. Added this workaround and it worked fine. originally fixed by Laxman Dewangan <ldewangan@nvidia.com> In continous mode, dma should stop after last transfer completed and if there is no more req pending. If there is pending req then it should check whether it has updated in hw for next transfer or not and if it has not started then stop dma and start new req immediatley. originally fixed by Laxman Dewangan <ldewangan@nvidia.com> Change-Id: I49c97c96eacdf4060de6b21cec0e71d940d33f00
2011-11-30[ARM] tegra: dma: fix a typoIliyan Malchev
Signed-off-by: Iliyan Malchev <malchev@google.com>
2011-11-30ARM: tegra: dma: Convert suspend/resume to syscoreColin Cross
Signed-off-by: Colin Cross <ccross@android.com> Change-Id: Ibc0b36149bb10baa357a8bb3f24925ce3d6f3d9d
2011-11-30ARM: tegra: remove unused mach/suspend.hColin Cross
mach/suspend.h is not used yet, and its functions will be replaced with syscore ops. Delete it. Change-Id: I7b32d3514e7f4427c7d5faa97c1954a7a2cc286c Signed-off-by: Colin Cross <ccross@android.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-02-23ARM: Tegra: DMA: Fail safe if initialization failsStephen Warren
tegra_dma_init currently simply bails out early if any initialization fails. This skips various data-structure initialization. In turn, this means that tegra_dma_allocate_channel can still hand out channels. In this case, when tegra_dma_free_channel is called, which calls tegra_dma_cancel, the walking on ch->list will OOPS since the list's next/prev pointers may still be NULL. To solve this, add an explicit "initialized" flag, only set this once _init has fully completed successfully, and have _allocate_channel refuse to hand out channels if this is not set. While at it, simplify _init: * Remove redundant memsets * Use bitmap_fill to mark all channels as in-use up-front, and remove some now-redundant bitmap initialization loops. * Only mark a channel as free once all channel-related initialization has completed. Finally, the successful exit path from _init always has ret==0, so just hard-code that return. The error path still returns ret. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Colin Cross <ccross@android.com>
2011-02-23ARM: Tegra: Make tegra_dma_init a postcore_initcallStephen Warren
The following commit makes the Tegra APB DMA engine fail to initialize correctly: 0cf6230af909a86f81907455eca2a5c9b8f68fe6 ARM: tegra: Move tegra_common_init to tegra_init_early The reason is that tegra_init_early_ calls tegra_dma_init which calls request_threaded_irq, which fails since the IRQ hasn't yet been marked valid; that only happens in tegra_init_irq, which gets called after tegra_init_early. This used to work OK, since tegra_init_early was tegra_common_init, which got called after tegra_init_irq, basically from the beginning of tegra_harmony_init. Solve this by converting tegra_dma_init to a postcore_initcall. This makes it execute late enough that IRQs are marked valid, and avoids having to add it back to every machine's init function. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Colin Cross <ccross@android.com>
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-10 21:35:48 +0000