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path: root/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
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2024-01-16drm/amdgpu: check PS, WS indexAlexander Richards1-2/+2
Theoretically, it would be possible for a buggy or malicious VBIOS to overwrite past the bounds of the passed parameters (or its own workspace); add bounds checking to prevent this from happening. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3093 Signed-off-by: Alexander Richards <electrodeyt@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-04-25drm: Rename dp/ to display/Thomas Zimmermann1-1/+2
Rename dp/ to display/ to account for additional display-related helpers, such as HDMI. Update all related include statements. No functional changes. Various drivers, such as i915 and amdgpu, use similar naming scheme by putting code for video-output standards into a local display/ directory. The new directory's name is aligned with this convention. v2: * update commit message (Javier) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-3-tzimmermann@suse.de
2022-01-17drm/dp: Move public DisplayPort headers into dp/Thomas Zimmermann1-1/+1
Move all public DisplayPort headers into dp/ and update users. No functional changes. v3: * rebased onto latest drm-tip Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220114114535.29157-5-tzimmermann@suse.de
2021-04-28drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay()Lyude Paul1-1/+1
So that we can start using drm_dbg_*() for drm_dp_link_train_channel_eq_delay() and drm_dp_lttpr_link_train_channel_eq_delay(). Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210423184309.207645-7-lyude@redhat.com Reviewed-by: Dave Airlie <airlied@redhat.com>
2021-04-28drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay()Lyude Paul1-1/+1
So that we can start using drm_dbg_*() in drm_dp_link_train_clock_recovery_delay(). Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210423184309.207645-6-lyude@redhat.com Reviewed-by: Dave Airlie <airlied@redhat.com>
2021-04-28drm/dp: Add backpointer to drm_device in drm_dp_auxLyude Paul1-0/+2
This is something that we've wanted for a while now: the ability to actually look up the respective drm_device for a given drm_dp_aux struct. This will also allow us to transition over to using the drm_dbg_*() helpers for debug message printing, as we'll finally have a drm_device to reference for doing so. Note that there is one limitation with this - because some DP AUX adapters exist as platform devices which are initialized independently of their respective DRM devices, one cannot rely on drm_dp_aux->drm_dev to always be non-NULL until drm_dp_aux_register() has been called. We make sure to point this out in the documentation for struct drm_dp_aux. v3: * Add WARN_ON_ONCE() to drm_dp_aux_register() if drm_dev isn't filled out Signed-off-by: Lyude Paul <lyude@redhat.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210423184309.207645-4-lyude@redhat.com Reviewed-by: Dave Airlie <airlied@redhat.com>
2020-09-08Merge tag 'amd-drm-next-5.10-2020-09-03' of ↵Dave Airlie1-3/+3
git://people.freedesktop.org/~agd5f/linux into drm-next amd-drm-next-5.10-2020-09-03: amdgpu: - RAS fixes - Sienna Cichlid updates - Navy Flounder updates - DCE6 (SI) support in DC - Enable plane rotation - Rework pre-OS vram reservation handling during driver init - Add standard interface to dump GPU metrics table from SMU - Rework tiling and tmz state handling in atomic commits - Pstate fixes - Add voltage and power hwmon interfaces for renoir - SW CTF fixes - S/G display fix for Raven - Print client strings for vmfaults for vega and newer - Manual fan control fixes - Display updates - Reorg power management directory structure - Misc bug fixes - Misc code cleanups amdkfd: - Topology fixes - Add SMI events for thermal throttling and GPU resets radeon: - switch from pci_* to dma_* for dma allocations - PLL fix Scheduler: - Clean up priority levels UAPI: - amdgpu INFO IOCTL query update for TMZ state https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6049 - amdkfd SMI event interface updates https://github.com/RadeonOpenCompute/rocm_smi_lib/tree/therm_thrott From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200903222921.4152-1-alexander.deucher@amd.com
2020-08-24drm/amdgpu: drm_device to amdgpu_device by inline-f (v2)Luben Tuikov1-3/+3
Get the amdgpu_device from the DRM device by use of an inline function, drm_to_adev(). The inline function resolves a pointer to struct drm_device to a pointer to struct amdgpu_device. v2: Use a typed visible static inline function instead of an invisible macro. Signed-off-by: Luben Tuikov <luben.tuikov@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-08-11drm/amdgpu: utilize subconnector property for DP through atombiosOleg Vasilev1-1/+17
Since DP-specific information is stored in driver's structures, every driver needs to implement subconnector property by itself. v2: rebase v3: renamed a function call Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: David (ChunMing) Zhou <David1.Zhou@amd.com> Cc: amd-gfx@lists.freedesktop.org Signed-off-by: Jeevan B <jeevan.b@intel.com> Signed-off-by: Oleg Vasilev <oleg.vasilev@intel.com> Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1587732655-17544-4-git-send-email-jeevan.b@intel.com
2020-02-26drm/amdgpu/display: split dp connector registration (v4)Alex Deucher1-8/+2
Split into init and register functions to avoid a segfault in some configs when the load/unload callbacks are removed. v2: - add back accidently dropped has_aux setting - set dev in late_register v3: - fix dp cec ordering v4: - squash in kdev reference fix Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Tested-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-13drm/amdgpu: remove set but not used variable 'dig'yu kuai1-2/+0
Fixes gcc '-Wunused-but-set-variable' warning: drivers/gpu/drm/amd/amdgpu/atombios_dp.c: In function ‘amdgpu_atombios_dp_link_train’: drivers/gpu/drm/amd/amdgpu/atombios_dp.c:716:34: warning: variable ‘dig’ set but not used [-Wunused-but-set-variable] Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)") Signed-off-by: yu kuai <yukuai3@huawei.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-13drm/amdgpu: remove set but not used variable 'dig_connector'yu kuai1-3/+0
Fixes gcc '-Wunused-but-set-variable' warning: drivers/gpu/drm/amd/amdgpu/atombios_dp.c: In function ‘amdgpu_atombios_dp_get_panel_mode’: drivers/gpu/drm/amd/amdgpu/atombios_dp.c:364:36: warning: variable ‘dig_connector’ set but not used [-Wunused-but-set-variable] It is never used, so can be removed. Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)") Signed-off-by: yu kuai <yukuai3@huawei.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11drm/amd: drop use of drmP.h in remaining filesSam Ravnborg1-1/+1
With this commit drm/amd/ has no longer any uses of the deprecated drmP.h header file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20190609220757.10862-11-sam@ravnborg.org
2016-08-08drm/amdgpu: Don't retry 7 times in amdgpu_atombios_dp_get_dpcd()Lyude1-11/+10
When this code was written, we didn't retry DP aux transactions on any error, which required retrying important transactions like this in individual drivers. Since that's no longer the case, retrying here is not necessary. As well, we retry any aux transaction on any error 32 times. 7 * 32 = 224, which means this loop causes us to retry grabbing the dpcd 224 times. This is definitely far more then we actually need to do. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Lyude <cpaul@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08drm/amdgpu: Don't print error on aux transaction timeoutsLyude1-1/+0
Since it's normal for DRM to retry our aux transaction helpers multiple times in a row, up to 32 times for each attempted transaction, we're making a lot of noise that is no longer necessary now that DRM will just print the return code we give it. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Lyude <cpaul@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-05-12drm/amdgpu: fix DP mode validationAlex Deucher1-2/+2
Switch the order of the loops to walk the rates on the top so we exhaust all DP 1.1 rate/lane combinations before trying DP 1.2 rate/lane combos. This avoids selecting rates that are supported by the monitor, but not the connector leading to valid modes getting rejected. bug: https://bugs.freedesktop.org/show_bug.cgi?id=95206 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-03-08drm/amdgpu/dp: add back special handling for NUTMEGAlex Deucher1-4/+16
When I fixed the dp rate selection in: 3b73b168cffd9c392584d3f665021fa2190f8612 drm/amdgpu: fix dp link rate selection (v2) I accidently dropped the special handling for NUTMEG DP bridge chips. They require a fixed link rate. Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Ken Wang <Qingqing.Wang@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2015-12-22drm/amdgpu: fix dp link rate selection (v2)Alex Deucher1-60/+36
Need to properly handle the max link rate in the dpcd. This prevents some cases where 5.4 Ghz is selected when it shouldn't be. v2: simplify logic, add array bounds check Reviewed-by: Tom St Denis <tom.stdenis@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-09-02drm/amdgpu/atom: Send out the full AUX addressAlex Deucher1-1/+2
AUX addresses are 20 bits long. Send out the entire address instead of just the low 16 bits. Port of: drm/radeon/atom: Send out the full AUX address to amdgpu Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2015-06-04drm/amdgpu: retry dcpd fetchAlex Deucher1-9/+11
Retry the dpcd fetch several times. Some eDP panels fail several times before the fetch is successful. bug: https://bugs.freedesktop.org/show_bug.cgi?id=73530 Ported from radeon. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-06-04drm/amdgpu: simplify DPCD debug outputAlex Deucher1-5/+4
Use %*ph rather than walking the array. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-06-04drm/amdgpu: make some DP parameters constAlex Deucher1-7/+7
Ported from similar radeon patch. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-06-04drm/amdgpu: add core driver (v4)Alex Deucher1-0/+774
This adds the non-asic specific core driver code. v2: remove extra kconfig option v3: implement minor fixes from Fengguang Wu v4: fix cast in amdgpu_ucode.c Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Jammy Zhou <Jammy.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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