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2024-01-15drm/amdgpu: check PS, WS indexAlexander Richards
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>
2023-12-13drm/amd: include drm/drm_edid.h only where neededJani Nikula
Including drm_edid.h from amdgpu_mode.h causes the rebuild of literally hundreds of files when drm_edid.h is modified, while there are only a handful of files that actually need to include drm_edid.h. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-10-05drm/amdgpu: Drop unnecessary return statementsSrinivasan Shanmugam
There is no reason to call return at the end of function that returns void. Fixes the below: WARNING: void function return statements are not generally useful Thus remove such a statement in the affected functions. Cc: Christian König <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-01-18drm/amdgpu: Remove unnecessary include statements for drm_crtc_helper.hThomas Zimmermann
Several source files include drm_crtc_helper.h without needing it or only to get its transitive include statements; leading to unnecessary compile-time dependencies. Directly include required headers and drop drm_crtc_helper.h where possible. v2: * keep includes sorted in amdgpu_device.c (Sam) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230116131235.18917-4-tzimmermann@suse.de
2022-11-04drm/amdgpu: Replace one-element array with flexible-array memberPaulo Miguel Almeida
One-element arrays are deprecated, and we are replacing them with flexible array members instead. So, replace one-element array with flexible-array member in struct _ATOM_FAKE_EDID_PATCH_RECORD and refactor the rest of the code accordingly. Important to mention is that doing a build before/after this patch results in no binary output differences. This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy() and help us make progress towards globally enabling -fstrict-flex-arrays=3 [1]. Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/238 Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101836 [1] Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-03drm/amdgpu: Register ACPI video backlight when skipping amdgpu backlight ↵Hans de Goede
registration Typically the acpi_video driver will initialize before amdgpu, which used to cause /sys/class/backlight/acpi_video0 to get registered and then amdgpu would register its own amdgpu_bl# device later. After which the drivers/acpi/video_detect.c code unregistered the acpi_video0 device to avoid there being 2 backlight devices. This means that userspace used to briefly see 2 devices and the disappearing of acpi_video0 after a brief time confuses the systemd backlight level save/restore code, see e.g.: https://bbs.archlinux.org/viewtopic.php?id=269920 To fix this the ACPI video code has been modified to make backlight class device registration a separate step, relying on the drm/kms driver to ask for the acpi_video backlight registration after it is done setting up its native backlight device. Add a call to the new acpi_video_register_backlight() when amdgpu skips registering its own backlight device because of either the firmware_flags or the acpi_video_get_backlight_type() return value. This ensures that if the acpi_video backlight device should be used, it will be available before the amdgpu drm_device gets registered with userspace. Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2022-08-25drm/amdgpu: Don't register backlight when another backlight should be used (v3)Hans de Goede
Before this commit when we want userspace to use the acpi_video backlight device we register both the GPU's native backlight device and acpi_video's firmware acpi_video# backlight device. This relies on userspace preferring firmware type backlight devices over native ones. Registering 2 backlight devices for a single display really is undesirable, don't register the GPU's native backlight device when another backlight device should be used. Changes in v2: - To avoid linker errors when amdgpu is builtin and video_detect.c is in a module, select ACPI_VIDEO and its deps if ACPI is enabled. When ACPI is disabled, ACPI_VIDEO is also always disabled, ensuring the stubs from acpi/video.h will be used. Changes in v3: - Use drm_info(drm_dev, "...") to log messages - ACPI_VIDEO can now be enabled on non X86 too, adjust the Kconfig changes to match this. Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2022-06-21drm/amdgpu: Drop CONFIG_BACKLIGHT_CLASS_DEVICE ifdefsHans de Goede
The DRM_AMDGPU Kconfig code contains: select BACKLIGHT_CLASS_DEVICE So the condition these ifdefs test for is always true, drop them. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-04-06drm/amdgpu: Remove leftover igp_lane_infoGrigory Vasilyev
Variable igp_lane_info always is 0. 0 & any value = 0 and false. In this way, all сonditional statements will false. The code was leftover from when the code was ported from radeon where igp_lane_info was derived from the vbios on supported platforms. [update commit message - Alex] Signed-off-by: Grigory Vasilyev <h0tc0d3@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-07drm/amdgpu: replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmiClaudio Suarez
Once EDID is parsed, the monitor HDMI support information is available through drm_display_info.is_hdmi. The amdgpu driver still calls drm_detect_hdmi_monitor() to retrieve the same information, which is less efficient. Change to drm_display_info.is_hdmi This is a TODO task in Documentation/gpu/todo.rst Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Claudio Suarez <cssk@net-c.es> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-11-16drm/amd/amdgpu/atombios_encoders: Remove set but unused variable ↵Lee Jones
'backlight_level' Also removing the call to amdgpu_atombios_encoder_get_backlight_level_from_reg() since, according to Alex Deucher, "We call it again below indirectly". Fixes the following W=1 kernel build warning(s): drivers/gpu/drm/amd/amdgpu/atombios_encoders.c: In function ‘amdgpu_atombios_encoder_init_backlight’: drivers/gpu/drm/amd/amdgpu/atombios_encoders.c:174:5: warning: variable ‘backlight_level’ set but not used [-Wunused-but-set-variable] Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Luben Tuikov <luben.tuikov@amd.com> Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-10-26drm/amdgpu: Discard unnecessary breaksZhang Qilong
The 'break' is unnecessary because of previous 'return', discard it. Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-08-24drm/amdgpu: Get DRM dev from adev by inline-fLuben Tuikov
Add a static inline adev_to_drm() to obtain the DRM device pointer from an amdgpu_device pointer. 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>
2020-08-24drm/amdgpu: drm_device to amdgpu_device by inline-f (v2)Luben Tuikov
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>
2019-06-10drm/amd: drop use of drmP.h in remaining filesSam Ravnborg
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
2018-08-27drm/amdgpu: move display definitions into amdgpu_display headerHuang Rui
Demangle amdgpu.h. Signed-off-by: Huang Rui <ray.huang@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14drm/amdgpu: save/restore backlight level in legacy dce codeAlex Deucher
Save/restore the backlight level scratch register in S3/S4 so the backlight level comes back at the previously requested level. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=199047 Fixes: 4ec6ecf48c64d (drm/amdgpu: drop scratch regs save and restore from S3/S4 handling) Acked-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-01-27drm/amdgpu: Remove checking for atombiosNils Wallménius
This is a left over from radeon, amdgpu doesn't support any non-atombios parts and amdgpu_device_init would bail if the check for atombios failed anyway. Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Signed-off-by: Nils Wallménius <nils.wallmenius@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-07-14drm/amdgpu: support backlight control for UNIPHY3Alex Deucher
Same interface as other UNIPHY blocks Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-05-09Merge tag 'v4.6-rc7' into drm-nextDave Airlie
Merge this back as we've built up a fair few conflicts, and I have some newer trees to pull in.
2016-05-04drm/amdgpu/atom: add support for new UNIPHYTransmitterContol cmd tableAlex Deucher
New uniphy transmitter setup table for elm/baf. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
2016-05-04drm/amdgpu/atom: add support for new DIGxEncoderControl cmd tableAlex Deucher
New digital encoder setup table for elm/baf. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
2016-05-03drm/amdgpu: make sure vertical front porch is at least 1Alex Deucher
hw doesn't like a 0 value. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2015-09-29drm/amdgpu: Restore LCD backlight level on resumeAlex Deucher
Instead of only enabling the backlight (which seems to set it to max brightness), just re-set the current backlight level, which also takes care of enabling the backlight if necessary. Port of radeon commit: drm/radeon: Restore LCD backlight level on resume (>= R5xx) Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2015-08-17drm/amdgpu: merge amdgpu_family.h into amd_shared.h (v2)Jammy Zhou
Make the definitions common for all driver components v2: fix kfd Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-06-03drm/amdgpu: add core driver (v4)Alex Deucher
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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