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2023-03-25drm: rcar-du: lvds: Fix LVDS PLL disable on D3/E3Laurent Pinchart
On R-Car D3 and E3, the LVDS encoder provides the dot (pixel) clock to the DU, regardless of whether the LVDS output is used or not. When using the DPAD (RGB) output, the DU driver thus enables and disables the LVDS PLL manually, while when using the LVDS output, it lets the LVDS bridge driver handle the PLL configuration internally as part of the atomic enable and disable operations. This causes an issue when using the LVDS output. As bridges are disabled before CRTCs, the current implementation violates the enable/disable sequences documented in the hardware datasheet, which requires the dot clock to be enabled before the CRTC is started and disabled after it gets stopped. Fix the problem by enabling/disabling the LVDS PLL manually from the DU regardless of which output is used, and skipping the PLL handling in the LVDS bridge atomic enable and disable operations. This is however not enough. Disabling the LVDS encoder while leaving the PLL on still results in a vertical blanking wait timeout when disabling the DU. Investigation showed that the culprit is the LVEN bit. For an unclear reason, clearing the bit when disabling the LVDS encoder blocks vertical blanking interrupts. We thus have to delay disabling the whole LVDS encoder, not just disabling the PLL, until the DU is disabled. We could split the LVDS disable sequence by clearing the LVRES bit in the LVDS bridge atomic disable handler, and delaying the rest of the operations, in order to disable the LVDS output at bridge atomic disable time, before stopping the CRTC. This would make the code more complex, without a clear benefit, so keep the implementation simple(r). Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
2023-03-25drm: rcar-du: lvds: Move LVDS enable code to separate code sectionLaurent Pinchart
To prepare for a rework of the LVDS disable code, which will need to be called from rcar_lvds_pclk_disable(), move the LVDS enable code, currently stored in the __rcar_lvds_atomic_enable() function, to a separate code section separate from bridge operations. It will be then extended with the LVDS disable code. As part of this rework the __rcar_lvds_atomic_enable() function is renamed to rcar_lvds_enable() to more clearly indicate its purpose. No functional change intended. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
2023-03-25drm: rcar-du: lvds: Call function directly instead of through pointerLaurent Pinchart
When disabling the companion bridge in rcar_lvds_atomic_disable(), there's no need to go through the bridge's operations to call .atomic_disable(). Call rcar_lvds_atomic_disable() on the companion directly. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
2023-03-24Merge tag 'drm-intel-next-2023-03-23' of ↵Daniel Vetter
git://anongit.freedesktop.org/drm/drm-intel into drm-next Core Changes: - drm: Add SDP Error Detection Configuration Register (Arun) Driver Changes: - Meteor Lake enabling and fixes (RK, Jose, Madhumitha) - Lock the fbdev obj before vma pin (Tejas) - DSC fixes (Stanislav) - Fixes and clean-up on opregion code (Imre) - More wm/vblank stuff (Ville) - More general display code organization (Jani) - DP Fixes (Stanislav, Ville) - Introduce flags to ignore long HPD and link training issues \ for handling spurious issues on CI (Vinod) - Plane cleanups and extra registers (Ville) - Update audio keepalive clock values (Clint) - Rename find_section to bdb_find_section (Maarten) - DP SDP CRC16 for 128b132b link layer (Arun) - Fix various issues with noarm register writes (Ville) - Fix a few TypeC / MST issues (Imre) - Create GSC submission targeting HDCP and PXP usages on MTL+ (Suraj) - Enable HDCP2.x via GSC CS (Suraj) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ZBy56qc9C00tCLOY@intel.com
2023-03-24Merge tag 'drm-misc-next-2023-03-23' of ↵Daniel Vetter
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v6.4-rc1: Core Changes: - Add unit test for xrgb8888 to mono. - Assorted small fixes to format helper selftests. - Assorted documentation updates. - Drop drm_dev_set_unique. - Always use shadow buffer in generic fbdev emulation helpers, and improve error handling. Driver Changes: - Assorted small fixes to malidp, hdlcd, gma500, lima, bridge, rockchip. - Move fbdev in gma500 to use drm_client. - Convert bridge platform callbacks to void return. - Drop leftover from vgem to shmem helper conversion. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/5a4c438e-7047-c044-fc77-5a3597000264@linux.intel.com
2023-03-23drm/i915/mtl: Add HDCP GSC interfaceSuraj Kandpal
MTL uses GSC command streamer i.e gsc cs to send HDCP/PXP commands to GSC f/w. It requires to keep hdcp display driver agnostic to content protection f/w (ME/GSC fw) in the form of i915_hdcp_fw_ops generic ops. Adding HDCP GSC CS interface by leveraging the i915_hdcp_fw_ops generic ops instead of I915_HDCP_COMPONENT as integral part of i915. Adding checks to see if GSC is loaded and proxy is setup --v6 -dont change the license date in same patch series [Jani] -fix the license year {Jani] --v8 -remove stale comment [Ankit] -get headers in alphabetical order [Ankit] -fix hdcp2_supported check [Ankit] --v9 -remove return statement from hdcp_gsc_fini [Ankit] Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Uma Shankar <uma.shankar@intel.com> Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-7-suraj.kandpal@intel.com
2023-03-23drm/i915/mtl: Add function to send command to GSC CSSuraj Kandpal
Add function that takes care of sending command to gsc cs. We start of with allocation of memory for our command intel_hdcp_gsc_message that contains gsc cs memory header as directed in specs followed by the actual payload hdcp message that we want to send. Spec states that we need to poll pending bit of response header around 20 times each try being 50ms apart hence adding that to current gsc_msg_send function Also we use the same function to take care of both sending and receiving hence no separate function to get the response. --v4 -Create common function to fill in gsc_mtl_header [Alan] -define host session bitmask [Alan] --v5 -use i915 directly instead of gt->i915 [Alan] -No need to make fields NULL as we are already using kzalloc [Alan] --v8 -change mechanism to reuse the same memory for one hdcp session[Alan] -fix header ordering -add comments to explain flags and host session mask [Alan] --v9 -remove gem obj from hdcp message as we can use i915_vma_unpin_and_release [Alan] -move hdcp message allocation and deallocation from hdcp2_enable and hdcp2_disable to init and teardown of HDCP [Alan] --v10 -remove unnecessary i915_vma_unpin [Alan] --v11 -fix comment style [Uma] Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Alan Pervin Teres <alan.previn.teres.alexis@intel.com> Cc: Uma Shankar <uma.shankar@intel.com> Cc: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-6-suraj.kandpal@intel.com
2023-03-23drm/i915/hdcp: Refactor HDCP API structuresSuraj Kandpal
It requires to move intel specific HDCP API structures to i915_hdcp_interface.h from driver/misc/mei/hdcp/mei_hdcp.h so that any content protection fw interfaces can use these structures. Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Uma Shankar <uma.shankar@intel.com> Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-5-suraj.kandpal@intel.com
2023-03-23drm/i915/hdcp: HDCP2.x Refactoring to agnostic hdcpSuraj Kandpal
There are more than 1 type of content protection security firmware. Make the name generic %s/_mei_/_ --v3 -Changing names to drop cp_fw to make naming more agnostic[Jani] --v4 -remove header reference in intel_display_core.h [Uma] -fix commit message and prefix drm [Uma] Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Uma Shankar <uma.shankar@intel.com> Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-4-suraj.kandpal@intel.com
2023-03-23drm/i915/hdcp: Use generic names for HDCP helpers and structsAnshuman Gupta
pre MTL we interact with mei interface to talk to firmware and enable CP but going forward we will talk to gsc cs because of which we are making all names for HDCP helpers and structures generic as either mei or gsc cs maybe used. Change the include/drm/i915_mei_hdcp_interface.h to include/drm/i915_hdcp_interface.h Change the i915_hdcp_interface.h header naming convention to suit generic f/w type. %s/MEI_/HDCP_ %s/mei_dev/hdcp_dev Change structure name Accordingly. %s/i915_hdcp_comp_master/i915_hdcp_master %s/i915_hdcp_component_ops/i915_hdcp_ops --v6 -make each patch build individually [Jani] --v8 -change ME FW to ME/GSC FW [Ankit] -fix formatting issue [Ankit] --v9 -fix commit message and header [Uma] --v10 -rename comp variable [Uma] Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Uma Shankar <uma.shankar@intel.com> Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-3-suraj.kandpal@intel.com
2023-03-23drm/i915/gsc: Create GSC request submission mechanismSuraj Kandpal
HDCP and PXP will require a common function to allow it to submit commands to the gsc cs. Also adding the gsc mtl header that needs to be added on to the existing payloads of HDCP and PXP. --v4 -Seprate gsc load and heci cmd submission into different functions in different files for better scalability [Alan] -Rename gsc address field [Alan] --v5 -remove extra line is intel_gsc_fw.h [Uma] Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Alan Previn <alan.previn.teres.alexis@intel.com> Signed-off-by: Suraj Kandpal<suraj.kandpal@intel.com> Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-2-suraj.kandpal@intel.com
2023-03-23drm/rockchip: vop2: Add error check to devm_regmap_init_mmioAlfredo Cruz
devm_regmap_init_mmio() may return an invalid pointer in case of an error. This patch adds the corresponding IS_ERR check to vop2->map. Signed-off-by: Alfredo Cruz <alfredo.carlon@gmail.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230322224411.15612-1-alfredo.carlon@gmail.com
2023-03-23drm/rockchip: dw_hdmi: cleanup drm encoder during unbindToby Chen
This fixes a use-after-free crash during rmmod. The DRM encoder is embedded inside the larger rockchip_hdmi, which is allocated with the component. The component memory gets freed before the main drm device is destroyed. Fix it by running encoder cleanup before tearing down its container. Signed-off-by: Toby Chen <tobyc@nvidia.com> [moved encoder cleanup above clk_disable, similar to bind-error-path] Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230317005126.496-1-tobyc@nvidia.com
2023-03-22drm/rockchip: vop2: fix uninitialized variable possible_crtcsTom Rix
clang reportes this error drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2322:8: error: variable 'possible_crtcs' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] if (vp) { ^~ drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2336:36: note: uninitialized use occurs here ret = vop2_plane_init(vop2, win, possible_crtcs); ^~~~~~~~~~~~~~ drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2322:4: note: remove the 'if' if its condition is always true if (vp) { ^~~~~~~~ The else-statement changes the win->type to OVERLAY without setting the possible_crtcs variable. Rework the block, initialize possible_crtcs to 0 to remove the else-statement. Split the else-if-statement out to its own if-statement so the OVERLAY check will catch when the win-type has been changed. Fixes: 368419a2d429 ("drm/rockchip: vop2: initialize possible_crtcs properly") Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Michael Riesch <michael.riesch@wolfvision.net> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230316132302.531724-1-trix@redhat.com
2023-03-22drm/i915/tc: Check the PLL type used by an enabled TC portImre Deak
The current way to determine during HW state sanitization if a PHY is connected in the expected way doesn't work in all cases. The check for this considers only the PHY ready/owned state and the initial TC mode which was determined earlier by the TC port HW readout - using the sink's HPD and the same PHY ready/owned states. For instance for an enabled DP-alt/TBT port without the PHY ready/owned flags set the initial mode will be TBT, and this will be regarded as a valid PHY state. However it's possible that the port is actually enabled in DP-alt mode, but for some reason the PHY ownership was not acquired. Make sure the driver can detect invalid PHY states as in the above example by checking the PHY ready/owned state wrt. the PLL type used. This should be the TBT PLL if the PHY is not owned and the MG (non-TBT) PLL if the PHY is owned. v2: Rebased on change passing crtc_state in the previous patch. Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230321220101.983366-3-imre.deak@intel.com
2023-03-22drm/i915/tc: Factor out a function querying active links on a TC portImre Deak
For clarity factor out the function to determine if there are active links on a TC port. This prepares for the next patch also checking the port's PLL type. While at it pass crtc_state to intel_tc_port_sanitize_mode(), and check hw.active in that, instead of the deprecated crtc->active flag. v2: Check crtc_state->hw.active instead of crtc->active. (Ville) Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230321220101.983366-2-imre.deak@intel.com
2023-03-22drm/i915: Add encoder hook to get the PLL type used by TC portsImre Deak
Add an encoder hook, which can be called on enabled TC ports to determine if the port uses a TBT or a non-TBT PLL. An upcoming patch will use this to sanity check active TC port's PHY state wrt. the PLL type used by the port. Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-13-imre.deak@intel.com
2023-03-22drm/i915/tc: Assume a TC port is legacy if VBT says the port has HDMIImre Deak
Since an HDMI output can only be enabled in legacy mode on TC ports, assume that VBT is wrong and the port is legacy if VBT says the port is non-legacy and has HDMI. If VBT says to enable DP as well leave the non-legacy flag enabled, relying on the flag getting fixed up based on the HPD status during sink detection. v2: Fix the legacy port flag only if DP is not enabled. Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230321220101.983366-1-imre.deak@intel.com
2023-03-22drm/i915/tc: Make the TC mode readout consistent in all PHY statesImre Deak
For consistency detect the initial TC mode in the PHY owned state the same way this is done in the not owned state (w/o changing the behavior). While at it, add more details to the PHY state debug print. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-11-imre.deak@intel.com
2023-03-22drm/i915/tc: Fix initial TC mode on disabled legacy portsImre Deak
Atm, a TC port's initial mode will be read out as TBT mode in any case the PHY ownership is not held. This isn't correct for legacy ports which should be used only in legacy mode. Fix the above initial mode to be disconnected mode for a legacy port and TBT mode for DP-alt/TBT ports. Determine the port type by checking first the HPD state and then the legacy VBT flag (so the HPD state can correct a bogus VBT flag). If a sink is connected on a disabled port the PHY will get also connected (switching it to legacy mode on a legacy port). Also connect the PHY on a legacy port if it's enabled but BIOS incorrectly left it in the disconnected state for some reason. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-10-imre.deak@intel.com
2023-03-22drm/i915/tc: Fix TC mode for a legacy port if the PHY is not readyImre Deak
A legacy TC port can't be switched to TBT mode, even if the PHY initialization wasn't ready yet for some reason, so prevent this. This shouldn't normally happen as the driver waits for the IOM/TCSS PHY initialization during driver loading and system resume. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-9-imre.deak@intel.com
2023-03-22drm/i915/tc: Fix target TC mode for a disconnected legacy portImre Deak
Atm, the target TC mode - which the PHY should be switched to at any point it's used - is TBT in case there is no sink connected. However legacy ports are only used in the legacy mode regardless of the sink connected state. Fix the mode returned by intel_tc_port_get_target_mode() accordingly. Despite of the above issue, the PHY got disconnected as expected in response to a sink disconnect event, causing only a redundant PHY disconnect->reconnect sequence whenever the port was used. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-8-imre.deak@intel.com
2023-03-22drm/i915/tc: Factor out helpers converting HPD mask to TC modeImre Deak
Factor out helpers used later in the patchset to convert an HPD status mask to TC mode or target TC mode. No functional changes. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-7-imre.deak@intel.com
2023-03-22drm/i915/tc: Wait for IOM/FW PHY initialization of legacy TC portsImre Deak
During boot-up/system resume, the TC PHY on legacy ports will be initialized by the IOM/TCSS firmware regardless of a sink being connected or not (as opposed to DP-alt/TBT ports, which the FW only inits once a sink is connected). Wait for the above initialization to complete during HW readout, so that connecting the PHY later will already see the expected PHY ready state. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-6-imre.deak@intel.com
2023-03-22drm/i915/tc: Fix system resume MST mode restore for DP-alt sinksImre Deak
At least restoring the MST topology during system resume needs to use AUX before the display HW readout->sanitization sequence is complete, but on TC ports the PHY may be in the wrong mode for this, resulting in the AUX transfers to fail. The initial TC port mode is kept fixed as BIOS left it for the above HW readout sequence (to prevent changing the mode on an enabled port). If the port is disabled this initial mode is TBT - as in any case the PHY ownership is not held - even if a DP-alt sink is connected. Thus, the AUX transfers during this time will use TBT mode instead of the expected DP-alt mode and so time out. Fix the above by connecting the PHY during port initialization if the port is disabled, which will switch to the expected mode (DP-alt in the above case). As the encoder/pipe HW state isn't read-out yet at this point, check if the port is enabled based on the DDI_BUF enabled flag. Save the read-out initial mode, so intel_tc_port_sanitize_mode() can check this wrt. the read-out encoder HW state. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-5-imre.deak@intel.com
2023-03-22drm/i915/tc: Fix the ICL PHY ownership check in TC-cold stateImre Deak
The commit renaming icl_tc_phy_is_in_safe_mode() to icl_tc_phy_take_ownership() didn't flip the function's return value accordingly, fix this up. This didn't cause an actual problem besides state check errors, since the function is only used during HW readout. Cc: José Roberto de Souza <jose.souza@intel.com> Fixes: f53979d68a77 ("drm/i915/display/tc: Rename safe_mode functions ownership") Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-4-imre.deak@intel.com
2023-03-22drm/i915/tc: Fix TC port link ref init for DP MST during HW readoutImre Deak
An enabled TC MST port holds one TC port link reference, regardless of the number of enabled streams on it, but the TC port HW readout takes one reference for each active MST stream. Fix the HW readout, taking only one reference for MST ports. This didn't cause an actual problem, since the encoder HW readout doesn't yet support reading out the MST HW state. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Mika Kahola <mika.kahola@intel.com> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-3-imre.deak@intel.com
2023-03-22drm/i915/tc: Abort DP AUX transfer on a disconnected TC portImre Deak
On TC ports the 4ms AUX timeout combined with the 5 * 32 retry attempts during DPCD accesses adds a 640ms delay to each access if the sink is disconnected. This in turn slows down a modeset during which the sink is disconnected (for instance a disabling modeset). Prevent the above delay by aborting AUX transfers on a TC port with a disconnected sink. The DP 1.4a link CTS (4.2.1.5 Source Device Inactive HPD / Inactive AUX Test") also requires not to initiate AUX transfers on disconnected DP ports in general, however this patch doesn't change the behavior on non-TC ports, leaving that for a follow-up. Reported-and-tested-by: Chris Chiu <chris.chiu@canonical.com> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8279 Reviewed-by: Mika Kahola <mika.kahola@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-2-imre.deak@intel.com
2023-03-22drm/fbdev-generic: Rename symbolsThomas Zimmermann
Rename symbols to match the style of other fbdev-emulation source code. No functional changes. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Zack Rusin <zackr@vmware.com> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-9-tzimmermann@suse.de
2023-03-22drm/fb-helper: Consolidate CONFIG_DRM_FBDEV_LEAK_PHYS_SMEMThomas Zimmermann
Consolidate all handling of CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM by making the module parameter optional in drm_fb_helper.c. Without the config option, modules can set smem_start in struct fb_info for internal usage, but not export if to userspace. The address can only be exported by enabling the option and setting the module parameter. Also update the comment. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Zack Rusin <zackr@vmware.com> Tested-by: Sui Jingfeng<suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-8-tzimmermann@suse.de
2023-03-22drm/fbdev-generic: Clean up after failed probingThomas Zimmermann
Clean up fbdev and client state if the probe function fails. It used to leak allocated resources. Also reorder the individual steps to simplify cleanup. v2: * move screen_size update into separate patches Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Zack Rusin <zackr@vmware.com> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-7-tzimmermann@suse.de
2023-03-22drm/fbdev-generic: Set screen size to size of GEM bufferThomas Zimmermann
The size of the screen memory should be equivalent to the size of the screen's GEM buffer. Don't recalculate the value. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-6-tzimmermann@suse.de
2023-03-22drm/fb-helper: Support smem_len in deferred I/OThomas Zimmermann
The size of the framebuffer can either be stored in screen_info or smem_len. Take both into account in the deferred I/O code. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-5-tzimmermann@suse.de
2023-03-22drm/fb-helper: Export drm_fb_helper_release_info()Thomas Zimmermann
Export the fb_info release code as drm_fb_helper_release_info(). Will help with cleaning up failed fbdev probing. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Zack Rusin <zackr@vmware.com> Tested-by: Sui Jingfeng<suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-4-tzimmermann@suse.de
2023-03-22drm/fbdev-generic: Remove unused prefer_shadow_fbdev flagThomas Zimmermann
Remove the flag prefer_shadow_fbdev from struct drm_mode_config. Drivers set this flag to enable shadow buffering in the generic fbdev emulation. Such shadow buffering is now mandatory, so the flag is unused. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Zack Rusin <zackr@vmware.com> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-3-tzimmermann@suse.de
2023-03-22drm/fbdev-generic: Always use shadow bufferingThomas Zimmermann
Remove all codepaths that implement fbdev output directly on GEM buffers. Always allocate a shadow buffer in system memory and set up deferred I/O for mmap. The fbdev code that operated directly on GEM buffers was used by drivers based on GEM DMA helpers. Those drivers have been migrated to use fbdev-dma, a dedicated fbdev emulation for DMA memory. All remaining users of fbdev-generic require shadow buffering. Memory management of the remaining callers uses TTM, GEM SHMEM helpers or a variant of GEM DMA helpers that is incompatible with fbdev-dma. Therefore remove the unused codepaths from fbdev-generic and simplify the code. Using a shadow buffer with deferred I/O is probably the best case for most remaining callers. Some of the TTM-based drivers might benefit from a dedicated fbdev emulation that operates directly on the driver's video memory. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Zack Rusin <zackr@vmware.com> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Link: https://patchwork.freedesktop.org/patch/msgid/20230320150751.20399-2-tzimmermann@suse.de
2023-03-22drm: bridge: simple-bridge: Use dev_err_probe()Ye Xingchen
Replace the open-code with dev_err_probe() to simplify the code. Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/202303221622511915615@zte.com.cn
2023-03-22drm/bridge: display-connector: Use dev_err_probe()Ye Xingchen
Replace the open-code with dev_err_probe() to simplify the code. Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/202303221621336645576@zte.com.cn
2023-03-22drm: remove drm_dev_set_uniqueChristian König
Not used by any drivers any more, the only use case in drm_dev_init() can be inlined now. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230316082035.567520-2-christian.koenig@amd.com
2023-03-22Merge tag 'drm-habanalabs-next-2023-03-20' of ↵Dave Airlie
https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into drm-next This tag contains habanalabs driver and accel changes for v6.4: - uAPI changes: - Add opcodes to the CS ioctl to allow user to stall/resume specific engines inside Gaudi2. This is to allow the user to perform power testing/measurements when training different topologies. - Expose in the INFO ioctl the amount of device memory that the driver and f/w reserve for themselves. - Expose in the INFO ioctl a bit-mask of the available rotator engines in Gaudi2. This is to align with other engines that are already exposed. - Expose in the INFO ioctl the register's address of the f/w that should be used to trigger interrupts from within the user's code running in the compute engines. - Add a critical-event bit in the eventfd bitmask so the user will know the event that was received was critical, and a reset will now occur - Expose in the INFO ioctl two new opcodes to fetch information on h/w and f/w events. The events recorded are the events that were reported in the eventfd. - New features and improvements: - Add a dedicated interrupt ID in MSI-X in the device to the notification of an unexpected user-related event in Gaudi2. Handle it in the driver by reporting this event. - Allow the user to fetch the device memory current usage even when the device is undergoing compute-reset (a reset type that only clears the compute engines). - Enable graceful reset mechanism for compute-reset. This will give the user a few seconds before the device is reset. For example, the user can, during that time, perform certain device operations (dump data for debug) or close the device in an orderly fashion. - Align the decoder with the rest of the engines in regard to notification to the user about interrupts and in regard to performing graceful reset when needed (instead of immediate reset). - Add support for assert interrupt from the TPC engine. - Get the reset type that is necessary to perform per event from the auto-generated irq_map array. - Print the specific reason why a device is still in use when notifying to the user about it (after the user closed the device's FD). - Move to threaded IRQ when handling interrupts of workload completions. - Firmware related fixes: - Fix RAZWI event handler to match newest f/w version. - Read error cause register in dma core events because the f/w doesn't do that. - Increase maximum time to wait for completion of Gaudi2 reset due to f/w bug. - Align to the latest firmware specs. - Enforce the release order of the compute device and dma-buf. i.e increment the device file refcount for any dma-buf that was exported for that device. This will make sure the compute device release function won't be called until the user closes all the FDs of the relevant dma-bufs. Without this change, closing the device's FD before/without closing the dma-buf's FD would always lead to hard-reset of the device. - Fix a link in the drm documentation to correctly point to the accel section. - Compilation warnings cleanups - Misc bug fixes and code cleanups Signed-off-by: Dave Airlie <airlied@redhat.com> # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCgAdFiEE7TEboABC71LctBLFZR1NuKta54AFAmQYfcAACgkQZR1NuKta # 54DB4Af/SuiHZkVXwr+yHPv9El726rz9ZQD7mQtzNmehWGonwAvz15yqocNMUSbF # JbqE/vrZjvbXrP1Uv5UrlRVdnFHSPV18VnHU4BMS/WOm19SsR6vZ0QOXOoa6/AUb # w+kF3D//DbFI4/mTGfpH5/pzwu51ti8aVktosPFlHIa8iI8CB4/4IV+ivQ8UW4oK # HyDRkIvHdRmER7vGOfhwhsr4zdqSlJBYrv3C3Z1dkSYBPW/5ICbiM1UlKycwdYKI # cajQBSdUQwUCWnI+i8RmSy3kjNO6OE4XRUvTv89F2bQeyK/1rJLG2m2xZR/Ml/o5 # 7Cgvbn0hWZyeqe7OObYiBlSOBSehCA== # =wclm # -----END PGP SIGNATURE----- # gpg: Signature made Tue 21 Mar 2023 01:37:36 AEST # gpg: using RSA key ED311BA00042EF52DCB412C5651D4DB8AB5AE780 # gpg: Can't check signature: No public key From: Oded Gabbay <ogabbay@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230320154026.GA766126@ogabbay-vm-u20.habana-labs.com
2023-03-22Merge tag 'drm-intel-gt-next-2023-03-16' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-intel into drm-next Driver Changes: - Fix issue #6333: "list_add corruption" and full system lockup from performance monitoring (Janusz) - Give the punit time to settle before fatally failing (Aravind, Chris) - Don't use stolen memory or BAR for ring buffers on LLC platforms (John) - Add missing ecodes and correct timeline seqno on GuC error captures (John) - Make sure DSM size has correct 1MiB granularity on Gen12+ (Nirmoy, Lucas) - Fix potential SSEU max_subslices array-index-out-of-bounds access on Gen11 (Andrea) - Whitelist COMMON_SLICE_CHICKEN3 for UMD access on Gen12+ (Matt R.) - Apply Wa_1408615072/Wa_1407596294 correctly on Gen11 (Matt R) - Apply LNCF/LBCF workarounds correctly on XeHP SDV/PVC/DG2 (Matt R) - Implement Wa_1606376872 for Xe_LP (Gustavo) - Consider GSI offset when doing MCR lookups on Meteorlake+ (Matt R.) - Add engine TLB invalidation for Meteorlake (Matt R.) - Fix GSC Driver-FLR completion on Meteorlake (Alan) - Fix GSC races on driver load/unload on Meteorlake+ (Daniele) - Disable MC6 for MTL A step (Badal) - Consolidate TLB invalidation flow (Tvrtko) - Improve debug GuC/HuC debug messages (Michal Wa., John) - Move fd_install after last use of fence (Rob) - Initialize the obj flags for shmem objects (Aravind) - Fix missing debug object activation (Nirmoy) - Probe lmem before the stolen portion (Matt A) - Improve clean up of GuC busyness stats worker (John) - Fix missing return code checks in GuC submission init (John) - Annotate two more workaround/tuning registers as MCR on PVC (Matt R) - Fix GEN8_MISCCPCTL definition and remove unused INF_UNIT_LEVEL_CLKGATE (Lucas) - Use sysfs_emit() and sysfs_emit_at() (Nirmoy) - Make kobj_type structures constant (Thomas W.) - make kobj attributes const on gt/ (Jani) - Remove the unused virtualized start hack on buddy allocator (Matt A) - Remove redundant check for DG1 (Lucas) - Move DG2 tuning to the right function (Lucas) - Rename dev_priv to i915 for private data naming consistency in gt/ (Andi) - Remove unnecessary whitelisting of CS_CTX_TIMESTAMP on Xe_HP platforms (Matt R.) - - Escape wildcard in method names in kerneldoc (Bagas) - Selftest improvements (Chris, Jonathan, Tvrtko, Anshuman, Tejas) - Fix sparse warnings (Jani) [airlied: fix unused variable in intel_workarounds] Signed-off-by: Dave Airlie <airlied@redhat.com> From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ZBMSb42yjjzczRhj@jlahtine-mobl.ger.corp.intel.com
2023-03-21drm/lima: Use drm_sched_job_add_syncobj_dependency()Maíra Canal
As lima_gem_add_deps() performs the same steps as drm_sched_job_add_syncobj_dependency(), replace the open-coded implementation in Lima in order to simply use the DRM function. Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Qiang Yu <yuq825@gmail.com> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20230224214133.411966-1-mcanal@igalia.com
2023-03-22Merge tag 'drm-misc-next-2023-03-16' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v6.4-rc1: Cross-subsystem Changes: - Add drm_bridge.h to drm_bridge maintainers. Core Changes: - Assorted fixes to TTM, tests, format-helper, accel. - Assorted Makefile fixes to drivers and accel. - Implement fbdev emulation for GEM DMA drivers, and convert a lot of drivers to use it. - Use tgid instead of pid for tracking clients. Driver Changes: - Assorted fixes in rockchip, vmwgfx, nouveau, cirrus. - Add imx25 driver. - Add Elida KD50T048A, Sony TD4353, Novatek NT36523, STARRY 2081101QFH032011-53G panels. - Add 4K mode support to rockchip. - Convert cirrus to use regular atomic helpers, and more cirrus improvements. - Add damage clipping to cirrus, virtio. [airlied: add drm_bridge.h include to imx] Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/f7b765c7-d49d-edb5-2a6a-4f7a7be16a59@linux.intel.com
2023-03-21drm/i915: Disable DC states for all commitsVille Syrjälä
Keeping DC states enabled is incompatible with the _noarm()/_arm() split we use for writing pipe/plane registers. When DC5 and PSR are enabled, all pipe/plane registers effectively become self-arming on account of DC5 exit arming the update, and PSR exit latching it. What probably saves us most of the time is that (with PIPE_MISC[21]=0) all pipe register writes themselves trigger PSR exit, and then we don't re-enter PSR until the idle frame count has elapsed. So it may be that the PSR exit happens already before we've updated the state too much. Also the PSR1 panel (at least on this KBL) seems to discard the first frame we trasmit, presumably still scanning out from its internal framebuffer at that point. So only the second frame we transmit is actually visible. But I suppose that could also be panel specific behaviour. I haven't checked out how other PSR panels behave, nor did I bother to check what the eDP spec has to say about this. And since this really is all about DC states, let's switch from the MODESET domain to the DC_OFF domain. Functionally they are 100% identical. We should probably remove the MODESET domain... And for good measure let's toss in an assert to the place where we do the _noarm() register writes to make sure DC states are in fact off. v2: Just use intel_display_power_is_enabled() (Imre) Cc: <stable@vger.kernel.org> #v5.17+ Cc: Manasi Navare <navaremanasi@google.com> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Jouni Högander <jouni.hogander@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Fixes: d13dde449580 ("drm/i915: Split pipe+output CSC programming to noarm+arm pair") Fixes: f8a005eb8972 ("drm/i915: Optimize icl+ universal plane programming") Fixes: 890b6ec4a522 ("drm/i915: Split skl+ plane update into noarm+arm pair") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230320183532.17727-1-ville.syrjala@linux.intel.com
2023-03-21drm/i915: Workaround ICL CSC_MODE sticky armingVille Syrjälä
Unlike SKL/GLK the ICL CSC unit suffers from a new issue where CSC_MODE arming is sticky. That is, once armed it remains armed causing the CSC coeff/offset registers to become effectively self-arming. CSC coeff/offset registers writes no longer disarm the CSC, but fortunately register read still do. So we can use that to disarm the CSC unit once the registers for the current frame have been latched. This avoid s the self-arming behaviour from persisting into the next frame's .color_commit_noarm() call. Cc: <stable@vger.kernel.org> #v5.19+ Cc: Manasi Navare <navaremanasi@google.com> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Imre Deak <imre.deak@intel.com> Cc: Jouni Högander <jouni.hogander@intel.com> Fixes: d13dde449580 ("drm/i915: Split pipe+output CSC programming to noarm+arm pair") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-5-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak <imre.deak@intel.com>
2023-03-21drm/i915: Add a .color_post_update() hookVille Syrjälä
We're going to need stuff after the color management register latching has happened. Add a corresponding hook. Cc: <stable@vger.kernel.org> #v5.19+ Cc: Manasi Navare <navaremanasi@google.com> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Imre Deak <imre.deak@intel.com> Cc: Jouni Högander <jouni.hogander@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-4-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak <imre.deak@intel.com>
2023-03-21drm/i915: Move CSC load back into .color_commit_arm() when PSR is enabled on ↵Ville Syrjälä
skl/glk SKL/GLK CSC unit suffers from a nasty issue where a CSC coeff/offset register read or write between DC5 exit and PSR exit will undo the CSC arming performed by DMC, and then during PSR exit the hardware will latch zeroes into the active CSC registers. This causes any plane going through the CSC to output all black. We can sidestep the issue by making sure the PSR exit has already actually happened before we touch the CSC coeff/offset registers. Easiest way to guarantee that is to just move the CSC programming back into the .color_commir_arm() as we force a PSR exit (and crucially wait for it to actually happen) prior to touching the arming registers. When PSR (and thus also DC states) are disabled we don't have anything to worry about, so we can keep using the more optional _noarm() hook for writing the CSC registers. Cc: <stable@vger.kernel.org> #v5.19+ Cc: Manasi Navare <navaremanasi@google.com> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Imre Deak <imre.deak@intel.com> Cc: Jouni Högander <jouni.hogander@intel.com> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8283 Fixes: d13dde449580 ("drm/i915: Split pipe+output CSC programming to noarm+arm pair") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-3-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak <imre.deak@intel.com>
2023-03-21drm/i915: Split icl_color_commit_noarm() from skl_color_commit_noarm()Ville Syrjälä
We're going to want different behavior for skl/glk vs. icl in .color_commit_noarm(), so split the hook into two. Arguably we already had slightly different behaviour since csc_enable/gamma_enable are never set on icl+, so the old code was perhaps a bit confusing as well. Cc: <stable@vger.kernel.org> #v5.19+ Cc: Manasi Navare <navaremanasi@google.com> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Imre Deak <imre.deak@intel.com> Cc: Jouni Högander <jouni.hogander@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-2-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak <imre.deak@intel.com>
2023-03-21i915/display/dp: SDP CRC16 for 128b132b link layerArun R Murthy
Enable SDP error detection configuration, this will set CRC16 in 128b/132b link layer. For Display version 13 a hardware bit31 in register VIDEO_DIP_CTL is added to enable/disable SDP CRC applicable for DP2.0 only, but the default value of this bit will enable CRC16 in 128b/132b hence skipping this write. Corrective actions on SDP corruption is yet to be defined. v2: Moved the CRC enable to link training init(Jani N) v3: Moved crc enable to ddi pre enable <Jani N> v4: Separate function for SDP CRC16 (Jani N) Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230302081532.765821-3-arun.r.murthy@intel.com
2023-03-21drm: Add SDP Error Detection Configuration RegisterArun R Murthy
DP2.0 E11 defines a new register to facilitate SDP error detection by a 128B/132B capable DPRX device. v2: Update the macro name to reflect the DP spec(Harry) Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230302081532.765821-2-arun.r.murthy@intel.com
generated by cgit (git 2.34.1) at 2025-04-16 16:11:07 +0000