Split out a function to log EDID block status. The printouts get changed
slightly.
Unfortunately, not all users will have struct drm_device available, so
we convert to pr_* debug logging instead of drm device based logging.
v2: Complain more loudly about unknown status codes (Ville)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/98d12db95e55e2e18548822078ec3b16ae006732.1649685475.git.jani.nikula@intel.com
Initialize on-stack modes with drm_mode_init() to guarantee
no stack garbage in the list head, or that we aren't copying
over another mode's list head.
Based on the following cocci script, with manual fixups:
@decl@
identifier M;
expression E;
@@
- struct drm_display_mode M = E;
+ struct drm_display_mode M;
@@
identifier decl.M;
expression decl.E;
statement S, S1;
@@
struct drm_display_mode M;
... when != S
+ drm_mode_init(&M, &E);
+
S1
@@
expression decl.E;
@@
- &*E
+ E
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220218100403.7028-22-ville.syrjala@linux.intel.com
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
There's no need to handle complicated scenarios or debug log when
filtering blocks that have already been identified as invalid. Simplify
by adding an edid_block_valid() helper that operates on const data and
prints nothing.
(Finally, here's the justification for the previously added separate
edid_block_status_valid() function!)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/aa25131c3454c7dbc1e8fdb46549f3787bdf6354.1648752228.git.jani.nikula@intel.com
Add edid_block_check() that only checks the EDID block validity, without
any actions. Turns out it's simple and crystal clear.
Rewrite drm_edid_block_valid() around it, keeping all the functionality
fairly closely the same, warts and all. Turns out it's incredibly
complicated for a function you'd expect to be simple, with all the
fixing and printing and special casing. (Maybe we'll want to simplify it
in the future.)
To slightly simplify, drop the warning for EDID minor revisions > 4.
v2:
- Fix edid_fixup clamp (Ville)
- s/base/is_base_block/ (Ville)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b7d108b69acccb7dccbdecc0ca06c2b3ca2e33ca.1648752228.git.jani.nikula@intel.com
Have two clear functions, one to compute the checksum over the EDID, and
another to get the checksum from the EDID. Throw away the diff function.
Ditch the drm_ prefix for static functions, and accept const void * to
help transition to struct edid * usage.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/36641401c8eb0e403c0e33365ff4ad9a28f9fd4a.1648752228.git.jani.nikula@intel.com
The invalid EDID block filtering uses the number of valid EDID
extensions instead of all EDID extensions for looping the extensions in
the copy. This is fine, by coincidence, if all the invalid blocks are at
the end of the EDID. However, it's completely broken if there are
invalid extensions in the middle; the invalid blocks are included and
valid blocks are excluded.
Fix it by modifying the base block after, not before, the copy.
Fixes: 14544d0937 ("drm/edid: Only print the bad edid when aborting")
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220330170426.349248-1-jani.nikula@intel.com
We'll want to keep the EDID immutable while parsing. Stop modifying the
EDID because of the quirks.
In theory, this does have userspace implications, but the userspace is
supposed to use the modes exposed via KMS API, not by parsing the EDID
directly.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/45d5cf067eaad49b321ac82836090d9de524374e.1648477901.git.jani.nikula@intel.com
Only an EDID CEA extension has byte #3, while the CTA DisplayID Data
Block does not. Don't interpret bogus data for color formats.
For most displays it's probably an unlikely scenario you'd have a CTA
DisplayID Data Block without a CEA extension, but they do exist.
Fixes: e28ad544f4 ("drm/edid: parse CEA blocks embedded in DisplayID")
Cc: <stable@vger.kernel.org>
Cc: Shawn C Lee <shawn.c.lee@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220323100438.1757295-1-jani.nikula@intel.com
Tag code stored in bit7:5 for CTA block byte[3] is not the same as
CEA extension block definition. Only check CEA block has
basic audio support.
v3: update commit message.
Cc: stable@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Shawn C Lee <shawn.c.lee@intel.com>
Cc: intel-gfx <intel-gfx@lists.freedesktop.org>
Signed-off-by: Cooper Chiou <cooper.chiou@intel.com>
Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
Fixes: e28ad544f4 ("drm/edid: parse CEA blocks embedded in DisplayID")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220324061218.32739-1-shawn.c.lee@intel.com
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Backmerge tag 'v5.17-rc6' into drm-next
This backmerges v5.17-rc6 so I can merge some amdgpu and some tegra changes on top.
Signed-off-by: Dave Airlie <airlied@redhat.com>
In order to fill the drm_display_info structure each time an EDID is
read, the code currently will call drm_add_display_info with the parsed
EDID.
drm_add_display_info will then call drm_reset_display_info to reset all
the fields to 0, and then set them to the proper value depending on the
EDID.
In the color_formats case, we will thus report that we don't support any
color format, and then fill it back with RGB444 plus the additional
formats described in the EDID Feature Support byte.
However, since that byte only contains format-related bits since the 1.4
specification, this doesn't happen if the EDID is following an earlier
specification. In turn, it means that for one of these EDID, we end up
with color_formats set to 0.
The EDID 1.3 specification never really specifies what it means by RGB
exactly, but since both HDMI and DVI will use RGB444, it's fairly safe
to assume it's supposed to be RGB444.
Let's move the addition of RGB444 to color_formats earlier in
drm_add_display_info() so that it's always set for a digital display.
Fixes: da05a5a71a ("drm: parse color format support for digital displays")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reported-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220203115416.1137308-1-maxime@cerno.tech
Even though we have the other drm_display_info fields reset, the DC
modes are missing.
This shouldn't be an issue since it's explicitly reset every time a new
EDID is parsed.
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220125093251.594772-1-maxime@cerno.tech
Per VESA DisplayID Standard v2.0: Type VII Timing – Detailed Timing Data
Definitions were already provided as type I, but not used
Signed-off-by: Yaroslav Bolyukin <iam@lach.pw>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220123191955.57994-1-iam@lach.pw
The current code assumes that the RGB444 and YUV444 formats are the
same, but the HDMI 2.0 specification states that:
The three DC_XXbit bits above only indicate support for RGB 4:4:4 at
that pixel size. Support for YCBCR 4:4:4 in Deep Color modes is
indicated with the DC_Y444 bit. If DC_Y444 is set, then YCBCR 4:4:4
is supported for all modes indicated by the DC_XXbit flags.
So if we have YUV444 support and any DC_XXbit flag set but the DC_Y444
flag isn't, we'll assume that we support that deep colour mode for
YUV444 which breaks the specification.
In order to fix this, let's split the edid_hdmi_dc_modes field in struct
drm_display_info into two fields, one for RGB444 and one for YUV444.
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes: d0c94692e0 ("drm/edid: Parse and handle HDMI deep color modes.")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220120151625.594595-4-maxime@cerno.tech
The current code, when parsing the EDID Deep Color depths, that the
YUV422 cannot be used, referring to the HDMI 1.3 Specification.
This specification, in its section 6.2.4, indeed states:
For each supported Deep Color mode, RGB 4:4:4 shall be supported and
optionally YCBCR 4:4:4 may be supported.
YCBCR 4:2:2 is not permitted for any Deep Color mode.
This indeed can be interpreted like the code does, but the HDMI 1.4
specification further clarifies that statement in its section 6.2.4:
For each supported Deep Color mode, RGB 4:4:4 shall be supported and
optionally YCBCR 4:4:4 may be supported.
YCBCR 4:2:2 is also 36-bit mode but does not require the further use
of the Deep Color modes described in section 6.5.2 and 6.5.3.
This means that, even though YUV422 can be used with 12 bit per color,
it shouldn't be treated as a deep color mode.
This is also broken with YUV444 if it's supported by the display, but
DRM_EDID_HDMI_DC_Y444 isn't set. In such a case, the code will clear
color_formats of the YUV444 support set previously in
drm_parse_cea_ext(), but will not set it back.
Since the formats supported are already setup properly in
drm_parse_cea_ext(), let's just remove the code modifying the formats in
drm_parse_hdmi_deep_color_info()
Fixes: d0c94692e0 ("drm/edid: Parse and handle HDMI deep color modes.")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220120151625.594595-3-maxime@cerno.tech
The drm_hdmi_avi_infoframe_colorspace() function actually sets the
colorimetry and extended_colorimetry fields in the hdmi_avi_infoframe
structure with DRM_MODE_COLORIMETRY_* values.
To make things worse, the hdmi_avi_infoframe structure also has a
colorspace field used to signal whether an RGB or YUV output is being
used.
Let's remove the inconsistency and allow for the colorspace usage by
renaming the function.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220120151625.594595-2-maxime@cerno.tech
Improve non-desktop quirk logging if the EDID indicates non-desktop. If
both are set, note about redundant quirk. If there's no quirk but the
EDID indicates non-desktop, don't log non-desktop is set to 0.
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Philipp Zabel <philipp.zabel@gmail.com>
Tested-by: Philipp Zabel <philipp.zabel@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211228101051.317989-1-jani.nikula@intel.com
Now that there is support for the Microsoft VSDB for HMDs, remove the
non-desktop quirk for two devices that are verified to contain it in
their EDID: HPN-3515 and LEN-B800.
Presumably most of the other Windows Mixed Reality headsets contain it
as well, but there are ACR-7FCE and SEC-5194 devices without it.
Tested with LEN-B800.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.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/20220123101653.147333-2-philipp.zabel@gmail.com
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BackMerge tag 'v5.15-rc7' into drm-next
The msm next tree is based on rc3, so let's just backmerge rc7 before pulling it in.
Signed-off-by: Dave Airlie <airlied@redhat.com>
In commit e11f5bd822 ("drm: Add support for DP 1.4 Compliance edid
corruption test") the function connector_bad_edid() started assuming
that the memory for the EDID passed to it was big enough to hold
`edid[0x7e] + 1` blocks of data (1 extra for the base block). It
completely ignored the fact that the function was passed `num_blocks`
which indicated how much memory had been allocated for the EDID.
Let's fix this by adding a bounds check.
This is important for handling the case where there's an error in the
first block of the EDID. In that case we will call
connector_bad_edid() without having re-allocated memory based on
`edid[0x7e]`.
Fixes: e11f5bd822 ("drm: Add support for DP 1.4 Compliance edid corruption test")
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211005192905.v2.1.Ib059f9c23c2611cb5a9d760e7d0a700c1295928d@changeid
Signed-off-by: Dave Airlie <airlied@redhat.com>
- fbdev/efifb: Release PCI device's runtime PM ref during FB destr\
oy (Imre)
i915 Core Driver Changes:
- Only access SFC_DONE in media when not fused off for graphics 12 and newer.
- Double Memory latency values from pcode for DG2 (Matt Roper)
- ADL-S PCI ID update (Tejas)
- New DG1 PCI ID (Jose)
- Fix regression with uncore refactoring (Dave)
i915 Display Changes:
- ADL-P display (XE_LPD) fixes and updates (Ankit, Jani, Matt Roper, Anusham, Jose, Imre, Vandita)
- DG2 display fixes (Ankit, Jani)
- Expand PCH_CNP tweaked display workaround to all newer displays (Anshuman)
- General display simplifications and clean-ups (Jani, Swati, Jose, Ville)
- PSR Clean-ups, dropping support for BDW/HSD and enable PSR2 selective fetch by default (Jose, Gwan-gyeong)
- Nuke ORIGIN_GTT (Jose)
- Return proper DPRX link training result (Lee)
- FBC related refactor and fixes (Ville)
- Yet another attempt to solve the fast+narrow vs slow+wide eDP link training (Kai-Heng)
- DP 2.0 preparation work (Jani)
- Silence __iomem sparse warn (Ville)
- Clean up DPLL stuff (Ville)
- Fix various dp/edp max rates (Matt Atwood, Animesh, Jani)
- Remove VBT ddi_port_info caching (Jani)
- DSI driver improvements (Lee)
- HDCP fixes (Juston)
- Associate ACPI connector nodes with connector entries (Heikki)
- Add support for out-of-bound hotplug events (Hans)
- VESA vendor block and drm/i915 MSO use of it (Jani)
- Fixes for bigjoiner (Ville)
- Update memory bandwidth parameters (RK)
- DMC related fixes (Chris, Jose)
- HDR related fixes and improvements (Tejas)
- g4x/vlv/chv CxSR/wm fixes/cleanups (Ville)
- Use BIOS provided value for RKL Audio's HDA link (Kai-Heng)
- Fix the dsc check while selecting min_cdclk (Vandita)
- Split and constify vtable (Dave)
- Add ww context to intel_dpt_pin (Maarten)
- Fix bdb version check (Lukasz)
- DP per-lane drive settings prep work and other DP fixes (Ville)
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Merge tag 'drm-intel-next-2021-10-04' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
Cross-subsystem Changes:
- fbdev/efifb: Release PCI device's runtime PM ref during FB destr\
oy (Imre)
i915 Core Driver Changes:
- Only access SFC_DONE in media when not fused off for graphics 12 and newer.
- Double Memory latency values from pcode for DG2 (Matt Roper)
- ADL-S PCI ID update (Tejas)
- New DG1 PCI ID (Jose)
- Fix regression with uncore refactoring (Dave)
i915 Display Changes:
- ADL-P display (XE_LPD) fixes and updates (Ankit, Jani, Matt Roper, Anusham, Jose, Imre, Vandita)
- DG2 display fixes (Ankit, Jani)
- Expand PCH_CNP tweaked display workaround to all newer displays (Anshuman)
- General display simplifications and clean-ups (Jani, Swati, Jose, Ville)
- PSR Clean-ups, dropping support for BDW/HSD and enable PSR2 selective fetch by default (Jose, Gwan-gyeong)
- Nuke ORIGIN_GTT (Jose)
- Return proper DPRX link training result (Lee)
- FBC related refactor and fixes (Ville)
- Yet another attempt to solve the fast+narrow vs slow+wide eDP link training (Kai-Heng)
- DP 2.0 preparation work (Jani)
- Silence __iomem sparse warn (Ville)
- Clean up DPLL stuff (Ville)
- Fix various dp/edp max rates (Matt Atwood, Animesh, Jani)
- Remove VBT ddi_port_info caching (Jani)
- DSI driver improvements (Lee)
- HDCP fixes (Juston)
- Associate ACPI connector nodes with connector entries (Heikki)
- Add support for out-of-bound hotplug events (Hans)
- VESA vendor block and drm/i915 MSO use of it (Jani)
- Fixes for bigjoiner (Ville)
- Update memory bandwidth parameters (RK)
- DMC related fixes (Chris, Jose)
- HDR related fixes and improvements (Tejas)
- g4x/vlv/chv CxSR/wm fixes/cleanups (Ville)
- Use BIOS provided value for RKL Audio's HDA link (Kai-Heng)
- Fix the dsc check while selecting min_cdclk (Vandita)
- Split and constify vtable (Dave)
- Add ww context to intel_dpt_pin (Maarten)
- Fix bdb version check (Lukasz)
- DP per-lane drive settings prep work and other DP fixes (Ville)
Signed-off-by: Dave Airlie <airlied@redhat.com>
# gpg: Signature made Tue 05 Oct 2021 04:58:16 AEST
# gpg: using RSA key 6D207068EEDD65091C2CE2A3FA625F640EEB13CA
# gpg: Good signature from "Rodrigo Vivi <rodrigo.vivi@intel.com>" [unknown]
# gpg: aka "Rodrigo Vivi <rodrigo.vivi@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6D20 7068 EEDD 6509 1C2C E2A3 FA62 5F64 0EEB 13CA
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YVtPk6llsxBFiw7W@intel.com
In the commit bac9c29482 ("drm/edid: Break out reading block 0 of
the EDID") I broke out reading the base block of the EDID to its own
function. Unfortunately, when I did that I messed up the handling when
drm_edid_is_zero() indicated that we had an EDID that was all 0x00 or
when we went through 4 loops and didn't get a valid EDID. Specifically
I needed to pass the broken EDID to connector_bad_edid() but now I was
passing an error-pointer.
Let's re-jigger things so we can pass the bad EDID in properly.
Fixes: bac9c29482 ("drm/edid: Break out reading block 0 of the EDID")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patchwork.freedesktop.org/patch/msgid/20211004092100.1.Ic90a5ebd44c75db963112be167a03cc96f9fb249@changeid
