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* | msm: mdss: setup dsi control index before using itVinu Deokaran2016-03-23
| | | | | | | | | | | | | | | | | | The ndx variable of dsi control structure needs to be configured correctly in the early stage of probe. Otherwise, subsequent function could dereference to a wrong value. Change-Id: Icdcdf6713271af25c5135702d8479f5213909560 Signed-off-by: Vinu Deokaran <vinud@codeaurora.org>
* | msm: mdss: set proper primary panel flag for dual DSI caseSandeep Panda2016-03-23
| | | | | | | | | | | | | | | | | | | | | | In case of dual DSI configuration if any of the DSI controller is using bridge chip(HDMI) then consider that as secondary display or else consider DSI1 controller as secondary always. This change takes care of this assumption. Change-Id: Ia24c45de2af41144e76b102232b7481ca5c5acf2 Signed-off-by: Sandeep Panda <spanda@codeaurora.org> Signed-off-by: Vinu Deokaran <vinud@codeaurora.org>
* | msm: mdss: add support to register secondary fb on DSI devicePadmanabhan Komanduru2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | In the current implementation, DSI0/DSI1 device is always mapped to frame buffer-0. For dual DSI configuration, we need to register both the DSI devices to different frame buffers. Add driver and dtsi support to register DSI device on primary/secondary frame buffer at runtime based on the DSI configuration. Change-Id: Iac872723711c5d0264088c4f3b53d1385fd9ffe0 Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org> Signed-off-by: Vinu Deokaran <vinud@codeaurora.org> Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
* | msm: mdss: make timing db property DSI controller specificSandeep Panda2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | If timing db(Double Buffered) property is enabled, then MDP FLUSH bit needs to be set in order to push the data to video interface. Currently this property is used as a shared property for both DSI interfaces. But in case of chipsets where there is no FLUSH bit defined for the secondary DSI interface, this will cause issue. So moving the property to each controller specific instead of shared. Change-Id: I25913867da41ca2fb2848ab96f5be5d9228a8f63 Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
* | msm: mdss: move handoff pipes to used listDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | MDSS client may want to reuse the pipe during boot up which are currently in use. The pipe allocation fails when these pipes are in handoff state and atomic API tries to reallocate them. Moving them to used list allows client to reuse them at early stage without waiting for first valid kickoff. Change-Id: Ia6f1282ea192e3a0e948488ba833c2580bebb9bf Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: hdmi: add support for triggering hot plugAjay Singh Parmar2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Add sysfs node to trigger cable disconnect/connect hot plug interrupts. Power off 5v regulator which provides 5v to sink which in turn pulls hpd line low resulting in disconnect hot plug interrupt. Similarly, power on 5v regulator to get connect hot plug interrupt. This is needed to simulate cable connect and disconnect for some special requirements like resolution switch from the user applications. Change-Id: I882358ddb40acf07a5e7be692aac590880e012c2 Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
* | msm: mdss: update panel PHY timings during resolution switchSandeep Panda2016-03-23
| | | | | | | | | | | | | | | | | | During dynamic resolution switch update the DSI PHY timings for panel based on the new porch values. Also calculate the new frame rate as per new porch values. Change-Id: I683bf1255c77a2575567847cef5edcfb5529b69d Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
* | msm: mdss: check for change in panel timing parametersSandeep Panda2016-03-23
| | | | | | | | | | | | | | | | | | Add support to check for change in panel video timing parameters when DSI controller is used for a pluggable interface. Change-Id: Ia7ff6b3adf778283c1fc893f2c2eb4335ae4dd68 Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
* | msm: mdss: fix vbif debug bus dump in logDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | Invalid memory access during vbif debug bus dump in log leads to crash. This adds null check before accessing debug bus memory. Change-Id: I54b74ce1004c4246398f18cd1a262e29a0a20d20 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: set the correct buffer state after operationDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | Rotator modules uses the buffer but does not set the correct state. Configure the buffer state, alloc time, free time, data planes to provide valid information during debugging. Change-Id: I7e0942699abfbd3a4be9c531a6174cdc917b22a4 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: fix screen mess during adb shell stop/startRay Zhang2016-03-23
| | | | | | | | | | | | | | | | | | Reset backlight before blank to prevent backlight from enabling ahead of unblank. For some special cases like adb shell stop/start. Change-Id: I417b47f95ef804a156779cf696e6e610cff9f059 Signed-off-by: Ray Zhang <rayz@codeaurora.org>
* | msm: mdss: Fix potential NULL pointer dereference in misr setJayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | | | | | If control setup is not done and if userspace calls misr set via metadata ioctl, then there can be a potential NULL pointer deference as mixer might be NULL. Add a check to validate if mixer is not NULL. Change-Id: I92f5778788cfcce6fa01a038b4321222a8804f28 Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | mdss: mdp: Create virtual wb mixers for rotation if not availableJayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | | | Create virtual wb mixers to support rotation, if no matching mixers are available in the model. The number of virtual mixers is equal to the number of DMA pipes available for rotation. Change-Id: I3f4df3175595168d55373eb91e5cd05ef5f65919 Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | msm: mdss: generate panic if HW recovery fails during underrunDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | HW recovery is triggered when underrun happens. If pipe XIN halt status is checked during the recovery time frame, it would fail as the hw is in the recovery process. Check for the ctl reset status before every frame update and if it is set, add the same polling mechanism used while sw reset is triggered to ensure hw reset is complete before checking the pipe status. And add panic if hw fails to recover within the max polling time. Change-Id: Ia672195b519e76bc4560d4555222c26fde094a64 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org> Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
* | msm: mdss: enable hpd by default if it's not pluggableVinu Deokaran2016-03-23
| | | | | | | | | | | | | | | | If HDMI is configured as non-pluggable, enable the HPD by default in order to bring up full HDMI functionalities. Change-Id: Ibbe3b55c5eb93b055455ab461cea11b73a1b514d Signed-off-by: Vinu Deokaran <vinud@codeaurora.org>
* | msm: mdss: dsi: return true when esd status is not enabledDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | Panel status check returns the current state based on esd status check method. If esd method is not configured then it returns panel dead which is misleading. This change returns panel status alive if esd method is not enabled or esd check callback is not registered for certain method. Change-Id: I5df21df16618cd62b5d1495982ff889ed53ce31b Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: Add QPIC display supportNaseer Ahmed2016-03-23
| | | | | | | | | | | | | | | | | | Enabled QPIC display support by stubbing out MDP specific functions. Fixed compile errors by removing obsolete include files. Change-Id: Ibd0159bd530dcef69848a93ad2dd302d58dbc447 Signed-off-by: Naseer Ahmed <naseer@codeaurora.org>
* | msm: mdss: add ftraces to panel on and offVeera Sundaram Sankaran2016-03-23
| | | | | | | | | | | | | | | | | | | | Add ftraces to dsi panel on and panel off to get better profiling data during suspend and resume cases. This delay would be varying depending upon the panel and so the data would be helpful in isolating panel related delays. Change-Id: I16ca90ee7968a57b4f56462b0a00a31a145524b5 Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
* | msm: mdss: update secure display validation checksDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | Non-secure pipe should not be staged on MDSS when secure display session is in progress. Client has to unstage all pipes to disable the secure session before pushing non-secure layers on MDP. This change updates the validation checks to avoid such conditions. Change-Id: I626c6c3a5ef313b1af8369884a9b10d8586f7251 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: ensure ctl flush in case of fence timeoutJayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | | | | | | | In the current composition cycle, if the staging params are not changed, then currently MDP flush register is not configured. But due to any unforeseen reason if MDP fence timeout happens then to handle it gracefully we stage border fill. In this regard as the mixer config has now changed, then ctl flush has to be set. Change-Id: I24b9cb28426f8829ac3bb36bfa32859b588d06fd Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | msm: mdss: Correct max threshold bandwidth selection logicJayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | | | Max threshold Bandwidth selection logic should be independent of number of entries in max bandwidth limit DT property. Correct the logic to make it independent. Change-Id: I6510ad7095560b25bbada7c63c44ae88a6d955f1 Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | msm: mdss: Generalize per pipe bw limit implementationJayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | | | Currently per pipe bandwidth limit implementation takes care of only HFLip and VFLip case. Make it generic such that it takes care of Camera usecase as well. Change-Id: I6642bdb0611aa973a7563df019bf2dcdd5e4e584 Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | msm: mdss: protect clk enable member with mdp lockVeera Sundaram Sankaran2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | During irq_disable, mdp_lock is held and intr status is checked and cleared if any. If a new irq is triggered from another CPU at the same point, it would ideally be waiting on mdp_lock held by the other CPU. And when the mdp_lock is released after clearing the irq, mdp_isr is executed and at this point, clks might have been disabled. To avoid it, protect the clk_ena variable with mdp_lock and also check for the clk_ena status and skip irq handling when it is disabled. Change-Id: Ic71d2b6f877ca3510a0d0fa593a8a0c17e93d8f3 Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
* | msm: mdss: handle proper configuration of DSI PHY GLBL controlSandeep Panda2016-03-23
| | | | | | | | | | | | | | | | | | In case of independent dual DSI configuration, the GLBL_TEST_CTRL register for both the DSI PHY should be set to 1. This change adds proper check to handle this case. Change-Id: I6c16c1a359541ea0d3c5430a331f47b55e4bd8cc Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
* | msm: mdss: update the correct panel info for dfps clock methodIngrid Gallardo2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | Current code does not reflect the correct panel information when user space request the panel info and fps data after the fps update when using the clock method. This change fixes the code, so further calls to get the screen info have the correct panel data, as it is done for vfp method already. Change-Id: I2cae33cad02f43a9b887c8bdc55aca876e47a99a Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
* | msm: adv7533: Set Switch GPIO based on flagsSiddharth Zaveri2016-03-23
| | | | | | | | | | | | | | | | Set the GPIO based on the flag parsed from DTSI. To enable the switch gpio set the flag and to disable set inverse of the flag. Change-Id: Iddbe654f2cc6c7e2c5815798099f88d2154d76d5 Signed-off-by: Siddharth Zaveri <szaveri@codeaurora.org>
* | msm: mdss: avoid missing ECG due to thread preemptionUjwal Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On smart panels, Early Clock Gating (ECG), is initiated when current frame transfer is finished and no new frame update is queued. To track these two different states, driver maintains the state machine for HW transfer and SW's new frame update. Currently SW state machine is cleared only after HW transfer has started. Now in normal scenarios SW state should be cleared before HW is finished and if there is no new frame update queued then ECG will be initiated. However due to CPU scheduling, thread that needs to clear SW state got preempted. In the meantime HW finished the transfer and updated its state machine in the interrupt context. Since at this moment SW state wasn't cleared, ECG was not initiated. Avoid this situation by clearing SW state before HW transfer is started. CRs-fixed: 941832 Change-Id: I44828c6077eb8729162127b521f4fd4add2e3bcb Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>
* | msm: mdss: add support for dynamic refresh in clock update methodJeevan Shriram2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | It is possible to change the refresh rate of the panel by changing the byte clock and pixel clock to the required panel supported frequency. This change adds support to program dynamic refresh registers and trigger the dynamic refresh interrupt. Once the current frame is done, hardware ensures that the change in clock frequency is taken effect within the vertical blanking period. Change-Id: I3a1e0eb478c34111e94f977088c20e9a50c4ef25 Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org> Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
* | msm: mdss: avoid vsync_handler update in lp2 power stateDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | vsync_handler added in lp2 (doze_suspend) power state enables the vsync on hardware. That can lead to unclocked register access because device can go in pm_suspend in this power state. This change blocks the vsync_handler processing in lp2 power state. Change-Id: I4386baa6bc2f8303928edade79108b4983f66f42 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: update bandwidth limit changesJayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | Expose the bandwidth limits and status of bandwidth limit request to the userspace through sysfs entries. Change-Id: I697138546689e8d9943c3e5ff47ae6a924b8ddfb Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | msm: mdss: flush retire work before ctl_stop operationDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The vsync_retire worker registers for vsync_handler and removes it when client requests power_off. It may possible that vsync_handler is removed from list through two different contexts. One from worker thread and other from ctl_stop_sub call. Such race condition can lead to list corruption. Ideally, ov_off should wait for retire worker flush before calling ctl_stop to avoid such race condition. Change-Id: I7d68d67d1fe1df07e568a5f40db745ce155d7d14 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: save mdp/rot buffer smmu domain and permissionDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | Save mdp/rotator buffers' smmu domain and DMA direction information for debugging purpose. Change-Id: Ica05a90e7a139e8d2259f669530aea75d86c93e9 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: hdmi: s3d mode supportKen Zhang2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Add sysfs node s3d_mode for stereo 3d support, configure vendor info frame when 3d mode is set and current video mode can support it. Output edid_3d_modes in sysfs node in correct format. Set 1 to s3d_mode will enable side by side, 2 for top bottom, 3 for framepacking, 0 for 2d. Change-Id: I634da4ffbd4e7994113d805c3c8facef3c9a5a25 Signed-off-by: Ken Zhang <kenz@codeaurora.org> Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
* | msm: mdss: Disable idle pc during unblankRay Zhang2016-03-23
| | | | | | | | | | | | | | | | | | Disable idle pc during unblank, because LPM could introduce big delay from waiting for DSI DMA. Change-Id: Id11bf3f3015fa1ea4b22d1e1c2abd380cd8b65a2 Signed-off-by: Ray Zhang <rayz@codeaurora.org> Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
* | defconfig: 8996: Enable OPTIMIZE_FOR_SIZE for perf defconfigTrilok Soni2016-03-23
| | | | | | | | | | | | | | Enable OPTMIZE_FOR_SIZE for msm-perf_defconfig and also fix the forbidden warning found during the compilation. Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
* | msm: mdss: hdmi: fix handling of panel suspend eventTatenda Chipeperekwa2016-03-23
| | | | | | | | | | | | | | | | | | Unset the HPD state on receiving a suspend event, and ignore any HPD interrupts that are signalled while panel is in a suspended state. Change-Id: I21955079522e0688cd4cee17dae32f5e6d8496ab Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
* | msm: mdss: update the DSI h/w revision based checks for msm8937Padmanabhan Komanduru2016-03-23
| | | | | | | | | | | | | | | | | | | | The step version is different between msm8996 and msm8937 even though the major/minor versions are the same. Update the DSI PHY and clamp register programming for msm8937 by checking for the step version to avoid incorrect DSI register programming. Change-Id: Ia9582b2779f40429586e8709bb73c9a5c79bd6c5 Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
* | msm: mdss: use DMA_BIDIRECTIONAL for 8937Kalyan Thota2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simultaneous buffer maps with read and write permissions are possible due to the asynchronous nature of MDSS driver. Client stages the same buffer on MDP & ROTATOR. It calls the map API for both at the same time. Due to concurrency, the source buffer is mapped by MDP before and is ref-counted. ROTATOR API called later never updates the permission which is required for dst buffer. This leads to permission fault. Requesting the map with DMA_BIDIRECTIONAL flag to fix the issue. Change-Id: Ieb819820b19d163fee541dd571c5a58dc78be7d3 Signed-off-by: Kalyan Thota <kalyant@codeaurora.org> [cip@codeaurora.org: Resolved merge conflict] Signed-off-by: Clarence Ip <cip@codeaurora.org>
* | msm: mdss: fix 32 bit compilation issuesVishnuvardhan Prodduturi2016-03-23
| | | | | | | | | | | | | | | | | | | | | | Fix compilation issues with unsigned division. Also build errors are seen for 32bit compilation as local variable of mdp_overlay in function mdss_mdp_overlay_get_fb_pipe has huge size which crossing the 1024 limit. Use heap instead of stack in this case to fix the issue. Change-Id: I67e8498421d2e116e77076637716708cfc289c96 Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>
* | msm: mdss: unify smmu probes for 8996 and 8937Kalyan Thota2016-03-23
| | | | | | | | | | | | | | | | unify smmu probes for qsmmu and arm smmu since most of the functionality is common. Change-Id: I2a3ef5c95bf0008d9e1869decb25d7e3043a0786 Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>
* | msm: mdss: modularize DSC code to support 4K DSC split-panelUjwal Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Display Steam Compression (DSC) use-cases requires parameter calculations that affect MDP and DSI separately. Current implementation is not modular and calculates all the parameters in one big subroutine. Due to this, an issue has occurred where parameters that affect DSI relies on picture width where as DSI parameters should be calculated only based on uncompressed width to a particular DSI controller. Also current MDP driver tries to service DSC setup for all different topologies in a single subroutine and has become very error prone. Modularize MDP DSC setup so that it is easy to maintain and also add support for partial update for 4K DSC split-panel. Change-Id: I7057e6a5a22a72a9a216e5bc9f7f946675bfbbb8 Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>
* | msm: mdss: trigger frame timeout when recovery is in progressDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | MDSS software should trigger frame timeout when command mode interface recovery is in progress. After this new place for event, there is a small window where wait4pingpong and recovery path both can trigger this event. Use atomic_add_unless api instead of read and dec so that it would add protection and avoids timeline update multiple times for same frame update. Change-Id: I412c6341ac4d547acde914409481e9b57b2b88f2 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: Update MDSS caps for msm8937Krishna Chaitanya Devarakonda2016-03-23
| | | | | | | | | | | | | | | | Adding initialization of appropriate flags related to QoS and UBWC settings in MDSS capabilities for msm8937. Change-Id: I16aaf0dd39ce6150183f9b71d4573fdbad62a1da Signed-off-by: Krishna Chaitanya Devarakonda <kdevarak@codeaurora.org>
* | msm: mdss: delay release of splash buffer during first commitPadmanabhan Komanduru2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | During kernel boot up, the splash memory is unmapped and released at the beginning of first display commit during overlay start. By this time, MDP will not start fetching the new buffers that are queued as part of first commit. This can cause IOMMU page faults on the splash memory since the buffer is unmapped but IOMMU is attached as part of overlay kickoff. Hence, perform splash cleanup after waiting for a vsync during kickoff cycle. Change-Id: I0b6656f1cc2be9d96fd29e92b99b5aaed94eeb54 Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
* | msm: mdss: Update OT settings for Rotator and WFD on 8937Jayant Shekhar2016-03-23
| | | | | | | | | | | | | | | | Modify the Rotator and WFD OT setting as per recomendations from systems team. Change-Id: Ic523230ff0343bbac6c001080cce88acda4b3c7e Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>
* | msm: mdss: read pluggable flag from device treeVinu Deokaran2016-03-23
| | | | | | | | | | | | | | | | | | | | Add support to configure pluggable feature through device tree, but not hardcode inside driver. Change-Id: I1aaf8a65c1910e22bdaf678d0d02d7fe791937bf Signed-off-by: Vinu Deokaran <vinud@codeaurora.org> [cip@codeaurora.org: Resolved merge conflict] Signed-off-by: Clarence Ip <cip@codeaurora.org>
* | msm: mdss: Update phy timing structure with timing parametersJeevan Shriram2016-03-23
| | | | | | | | | | | | | | | | | | | | | | For PHY v2, the phy timing structure is different than PHY v1. This change updates the phy timing structure with the latest calculated PHY timing parameters for the given panel and refresh rate. Change-Id: Ibed32af5578a6dea5eb0f77d3bd0f102db6161dd Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org> Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
* | msm: mdss: register for recovery handler in doze modeDhaval Patel2016-03-23
| | | | | | | | | | | | | | | | | | | | The doze_suspend and stop state resets the recovery handler. It is required to register it again in doze mode because there can be frame update in this power state. Change-Id: I1bef7cdd63f21698aca18d326074ac3a0e4e5de4 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
* | msm: mdss: hdmi: use busy wait instead of completionAjay Singh Parmar2016-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Use busy wait while waiting for DDC read and write to complete. Using completion APIs to wait can result in thread to schedule and waking up the thread back can cause a delay of 30 - 40 ms or more. HDCP 2.2 authentication protocol uses some strict timeouts and can be as low as 20 ms. Avoid any possible scheduling and use busy wait to complete the DDC transactions within allowed time. Change-Id: I1c12d594a6e1e671fbaa4d197e375070deedc78d Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
* | msm: mdss: add support for pluggable interfaceAjay Singh Parmar2016-03-23
| | | | | | | | | | | | | | | | | | | | Add pluggable information into panel info to let other modules know that this interface supports HPD (Hot Plug Detect) and can be dynamically connected or disconnected. Change-Id: I8322b60c337cd2f46a4a500ad1a6083875f6206b Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org> Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-28 07:03:16 +0000