Allocate and register drm_panel to allow the panel_follower framework to
detect the eDP panel and pass drm_connector::kdev device to drm_panel
allocation for matching.
Call drm_panel_prepare/unprepare in ddi_enable for eDP to allow the
followers to get notified of the panel power state changes.
Note: This is for eDP with DDI platforms only.
v2: remove backlight setup from panel_register (Jani)
v3: Updated the commit message (Jani)
Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://lore.kernel.org/r/20250624-edp_panel-v3-1-e8197b6d9fde@intel.com
The drm panel funcs should be static, fix it.
Fixes: 3fdd5bfbd6 ("drm/i915/panel: register drm_panel and call prepare/unprepare for ICL+ DSI")
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20250612124617.626958-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
If the panel is enabled at probe, and we take over the hardware state,
the drm_panel prepared state will be out of sync. We'll need to notify
drm_panel framework about the state at probe, so it can in turn notify
the panel followers.
Cc: Lee Shawn C <shawn.c.lee@intel.com>
Tested-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/a33e4fe5e9970aed9c4aef8c426c00a189149c32.1749199013.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Allocate and register a drm_panel so that drm_panel_followers can find
the panel. Pass the drm_connector::kdev device to drm_panel allocation
for matching. That's only available after drm_sysfs_connector_add(), so
we need to postpone the drm_panel allocation until .late_register()
hook.
The drm_panel framework is moving towards devm_drm_panel_alloc(). It
requires a wrapper struct, and struct intel_panel would be the natural
candidate. However, we can't postpone its allocation until
.late_register(), so we have to use __devm_drm_panel_alloc() directly
for now.
Call the drm_panel_prepare() and drm_panel_unprepare() functions for
ICL+ DSI, so that followers get notified of the panel power state
changes. This can later be expanded to VLV+ DSI and eDP.
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Lee Shawn C <shawn.c.lee@intel.com>
Tested-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/13d15c1414e65ffb21944d66e2820befdab54e98.1749199013.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Add panel register/unregister functions, and handle backlight
register/unregister from there. This is in preparation for adding more
panel specific register/unregister functionality.
Cc: Lee Shawn C <shawn.c.lee@intel.com>
Tested-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@gmail.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/b737d4bc8b91df630cd4db4648f3a3571989cfd8.1749199013.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
With the primary goal of removing #include "i915_vma.h" from
intel_display_types.h, move intel_plane_ggtt_offset() to a proper
function in intel_atomic_plane.c. This reveals tons of implicit
dependencies all over the place that we pulled in via i915_vma.h. Fix
the fallout.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/70ac6d19518f355abf37ac8c4b0f1d18878be28c.1740412806.git.jani.nikula@intel.com
Now that we don't include i915_drv.h via any headers from display, we
can reliably remove unnecessary i915_drv.h includes and be sure they're
not indirectly included. Add other includes where needed.
v2: Fix 32-bit build
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241217132147.2008057-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Going forward, struct intel_display will be the main display driver
structure. Convert the main display entry points to struct
intel_display.
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241204102150.2223455-1-jani.nikula@intel.com
The panel fitter lives inside the pipe and so would affect all cloned
outputs. However the relevant properties (scaling mode, TV margins)
are per-connector so we could end up with a situation where each cloned
output wants a different pfit configuration. Let's just reject pfit
usage with cloning entirely.
Currently not an issue as we don't yet expose the TV margin
properties, but if/when we add those to HDMI we could end up
in this situation. For eDP/DP we don't support cloning anyyway.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016143134.26903-6-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Transcoder hdisplay/vdisplay have documented minimum limits
when using the panel fitter. Enforce those limits for all
pre-SKL platforms. SKL+ handles everything in the unified
scaler code instead.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016143134.26903-5-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Gen2/3 pfit doesn't support downscaling at all, so reject it.
On i965+ downscaling is supported by the hardware (max scale
factor < 2.0), but as downscaling increases the effective
pixel rate we can't safely allow it unless
intel_crtc_compute_pixel_rate() gets fixed. Probably the
best solution would be to calculate (at least an
apporiximate) pfit destination window and use
ilk_pipe_pixel_rate() for all platforms. For now reject
downscaling on all gmch platforms.
The intel ddx has a similar check for this in userspace,
modesetting ddx does not. And presumably wayland compositors
also do not make such assumptions in userspace.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016143134.26903-4-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
The ILK-BDW panel fitter imposes extra limits on the maximum
pipe source size we can use. Check for that.
Only HSW/BDW are really affected by this since on older platforms
the max hdisplay/vdisplay matches the max PIPESRC. But we'll
put in the limits for all the platforms just to keep things
clear.
Note that pch_panel_fitting() is also used on SKL+, but we'll
skip the checks for those as it's all supposed to be handled
in the unified scaler code.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016143134.26903-2-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
As described in the previous two patches an unexpected connector
detection can happen during the init/shutdown sequences. Prevent these
by returning the connector's current status from the detection handlers.
Link: https://patchwork.freedesktop.org/patch/msgid/20240104083008.2715733-10-imre.deak@intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Move is_in_vrr_range() into intel_vrr.c in anticipation of
more users, and rename it accordingly.
Cc: Manasi Navare <navaremanasi@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901130440.2085-8-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <navaremanasi@chromium.org>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
If the panel supports VRR it must be capable of accepting
timings with arbitrary vblank length, within the valid VRR
range. Use that fact to allow the user to request any refresh
rate they like. We simply pick the next highest fixed mode
from our list, and adjust the vblank to get the desired refresh
rate in the end.
Of course currently everything to do with the vrefresh is
using 1Hz precision, so might not be exact. But we can improve
that in the future by just upping our vrefresh precision.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404175431.23064-1-ville.syrjala@linux.intel.com
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
It's a bit confusing to have two cached EDIDs in struct intel_connector
with slightly different purposes. Make the distinction a bit clearer by
moving the EDID cached for eDP and LVDS panels at connector init time to
struct intel_panel, and name it fixed_edid. That's what it is, a fixed
EDID for the panels.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/328350ef918638928a8286cdbab3107c8258332d.1674643465.git.jani.nikula@intel.com
Currently on bxt/glk we just grab the power sequencer index from
the VBT data even though it may not have been parsed yet. That
could lead us to using the incorrect power sequencer during the
initial panel probe.
To avoid that let's try to read out the current state of the
power sequencer from the hardware. Unfortunately the power
sequencer no longer has anything in its registers to associate
it with the port, so the best we can do is just iterate through
the power sequencers and pick the first one. This should be
sufficient for single panel cases.
For the dual panel cases we probably need to go back to
parsing the VBT before the panel probe (and hope that
panel_type=0xff is never a thing in those cases). To that
end the code always prefers the VBT panel sequencer, if
available.
v2: Restructure a bit for upcoming icp+ dual PPS support
Cc: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221125173156.31689-5-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Lots of ADL machines out there with bogus VBTs that declare
two eDP child devices. In order for those to work we need to
figure out which power sequencer to use before we try the EDID
read. So let's do the panel VBT init early if we can, falling
back to the post-EDID init otherwise.
The post-EDID init panel_type=0xff approach of assuming the
power sequencer should already be enabled doesn't really work
with multiple eDP panels, and currently we just end up using
the same power sequencer for both eDP ports, which at least
confuses the wakeref tracking, and potentially also causes us
to toggle the VDD for the panel when we should not.
Cc: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221125173156.31689-3-ville.syrjala@linux.intel.com
Introduce a place where we can initialize connector->panel
after it's been allocated. We already have a intel_panel_init()
so had to get creative with the name and came up with
intel_panel_init_alloc().
Cc: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221125173156.31689-2-ville.syrjala@linux.intel.com
Turns out many of the files that need i915_reg.h get it implicitly via
{display/intel_de.h, gt/intel_context.h} -> i915_trace.h -> i915_irq.h
-> i915_reg.h. Since i915_trace.h doesn't actually need i915_irq.h,
makes sense to drop it, but that requires adding quite a few new
includes all over the place.
Prefer including i915_reg.h where needed instead of adding another
implicit include, because eventually we'll want to split up i915_reg.h
and only include the specific registers at each place.
Also some places actually needed i915_irq.h too.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6e78a2e0ac1bffaf5af3b5ccc21dff05e6518cef.1668008071.git.jani.nikula@intel.com
Since commit a5810f551d ("drm/i915: Allow more varied alternate
fixed modes for panels") intel_panel_add_edid_alt_fixed_modes()
no longer considers vrr vs. drrs separately. So no reason to
pass them as separate parameters either.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220927180615.25476-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Add a function to get the fixed_mode with the highest clock.
The plan is to use this for the link bw calculation on seamless
DRRS panels so that we alwasy end up with the same link params
regardless of the requested refresh rate. This will allow fastset
to do seamless refresh rate changes based on userspace request
instead of having to go for a full modeset.
TODO: the function name isn't great
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-15-ville.syrjala@linux.intel.com
On some systems the panel reports alternate modes with
different blanking periods. If the EDID reports them and VBT
doesn't tell us otherwise then I can't really see why they
should be rejected. So allow their use for the purposes of
static DRRS.
For seamless DRRS we still require a much more exact match
of course. But that logic only kicks in when selecting the
downclock mode (or in the future when determining whether
we can do a seamless refresh rate change due to a user
modeset).
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6374
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220830212436.2021-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
It seem that when dealing with VRR capable eDP panels we need
to accept fixed modes with variable vblank length (which is what
VRR varies dynamically). Typically the preferred mode seems to be
a non-VRR more (lowish dotclock/refresh rate + short vblank).
We also have examples where it looks like even the hblank length
is a bit different between the preferred mode vs. VRR mode(s).
So let's just accept anything that has matching hdisp+vdisp+flags.
v2: Document that is_alt_drrs_mode() is a subset of is_alt_vrr_mode() (Jani)
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/125
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220531191844.11313-4-ville.syrjala@linux.intel.com
Move the panel specific VBT parsing to happen during the
output probing stage. Needs to be done because the VBT
parsing will need to look at the EDID to determine
the correct panel_type on some machines.
We split the parsed VBT data (i915->vbt) along the same
boundary. For the moment we just hoist all the panel
specific stuff into connector->panel.vbt since that seems
like the most convenient place for eg. the backlight code.
Note that we simply drop the drrs type check from
intel_drrs_frontbuffer_update() since that operates on the whole
device rather than a specific connector/encoder. But the check
was just a micro optimization so removing it doesn't actually
mattter for correctness.
TODO: Lot's of cleanup to be done in the future. Eg. most of
the DSI stuff could probably be eliminated entirely and just
parsed on demand during DSI init.
v2: Note the intel_drrs_frontbuffer_update() change
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220510104242.6099-13-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
We shouldn't restrict ourselves to just downclock modes with
lower refresh rate than the preferred mode. Laptops these
days can offer higher refresh rate modes as well.
Remove the arbitrary limit and allow all modes that, apart
from the clock, match the preferred mode.
v2: s/add_edid_downclock_modes/add_edid_alt_fixed_modes/ (Jani)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331112822.11462-9-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Instead of duplicating the fixed/downclock modes we can just grab
the originals straight from the probed_modes list and keep them.
The next .get_modes() is going to repopulate the probed_modes list
anyway so whatever we leave there is just going to sit around until
that time wasting memory. In fact let's clear out the probed modes
list entirely to make sure we get 100% consistent behaviour starting
already from the very first real .get_modes().
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331112822.11462-7-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
The intel_panel_add_edid_fixed_mode() vs.
intel_panel_add_edid_downclock_mode() split is not really
helpful. Let's just roll those into a single function so
that the connector init code doesn't have to care too much
about this. All we need to know is whether DRRS should be
allowed or not.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331112822.11462-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
intel_drrs_init() is a mostly pointless wrapper around
intel_panel_add_edid_downclock_mode(), get rid of it.
The only really useful thing left in there is the debug
print regarding the DRRS type supported by the connector.
Let's just move that into intel_panel_init().
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331112822.11462-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
All the non-EDID fixed mode functions basically do the exact
same thing. Let's refactor the common bits into a shared
function.
There are minor differences on how the mode types are populated,
whether the display info physical size is updated, and the debug
print. The differences are purely accidental, so unifying them is
actually a good thing.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331112822.11462-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
