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Author SHA1 Message Date
Ville Syrjälä
ee9125720c drm/i915: Consult the registered encoders for the ICL combo PHY w/a 
Display WA #1178 calls us to tweak some magic bits when doing AUX
to an external combo PHY port. Instead of looking to see if the VBT
has declared such a port (which could in theory even alias with a
declared eDP port on the same PHY) just check the real situation
based on the registered encoders.

The only slight chicken vs. egg situation here is during output
probing. But typically we'd register the eDP ports first and so
once we get to probe anything external on the combo PHY we have
already determined if it's eDP or not.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-7-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-14 14:05:35 +02:00
Ville Syrjälä
9151c85cbb drm/i915: Replace intel_bios_is_port_hpd_inverted() with intel_bios_encoder_hpd_invert() 
intel_bios_is_port_hpd_inverted() is only used on bxt/glk on
which we always have encoder->devdata available. So consult
that instead of digging around in vbt.ports[].

And rename the function to match the common pattern.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-14 14:05:06 +02:00
Ville Syrjälä
5f42196d39 drm/i915: Replace intel_bios_is_lane_reversal_needed() with intel_bios_encoder_lane_reversal() 
The sole user of intel_bios_is_lane_reversal_needed() has
the devdata already located, so pass it in directly instead
of digging it again from vbt.ports[].

And rename the function to follow the common pattern for
these things.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-14 14:04:42 +02:00
Ville Syrjälä
db5d650ff0 drm/i915: Replace intel_bios_is_lspcon_present() with intel_bios_encoder_is_lspcon() 
We always have encoder->devdata available on the platforms
that can have LSPCON. So let's start looking there instead
of digging it out from vbt.ports[].

And let's rename the function to fit the common pattern
for these things.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-14 14:03:57 +02:00
Ville Syrjälä
d24b34758d drm/i915: Move variables to loop context 
Lot of the loops over VBT child devices have variables
declared outside the loop but only used inside the loop.
Move the variables to a tighter scope.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-14 14:03:33 +02:00
Ville Syrjälä
dfefe7bc53 drm/i915: Pass the whole encoder to hotplug_enables() 
bxt_hotplug_enables() needs to dig out not only the
hpd_pin but also the VBT child device info, so let's just
pass in the whole encoder to avoid having to look things
up multiple times.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208015508.24824-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-14 14:03:05 +02:00
Suraj Kandpal
f1dc979b60 drm/i915/dp: Increase slice_height for DP 
According VDSC spec 1.2a Section 3.8 Options for Slice
implies that 108 lines is an optimal slice height, but any
size can be used as long as vertical active
integer multiple and maximum vertical slice count requirements are met.

Bspec: 49259

--v3
-remove previous fallback code and return slice_height as 2 [Jani]

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230214052017.3312044-1-suraj.kandpal@intel.com
 2023-02-14 11:05:38 +02:00
Ville Syrjälä
2cfd1b3841 drm/i915: Prefix hex numbers with 0x 
It's hard to figure out whether the number is hex
or decimal if doesn't have the 0x to indicate hex.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130181701.29977-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-10 21:42:08 +02:00
Ville Syrjälä
3cd7cb2a7b drm/i915: Include stepping information in device info dump 
Dump the stepping information alongside all the other device
info. Might avoid some guesswork when reading logs.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130181701.29977-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-10 21:41:34 +02:00
Nirmoy Das
e5e43d3363 drm/i915/display: Pass drm_i915_private as param to i915 funcs 
For i915 functions pass struct drm_i915_private directly instead of
struct drm_device.

v2: Use to_i915(dev) directly without alias(Andrzej).

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Suggested-by: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230125095603.17845-1-nirmoy.das@intel.com
 2023-02-10 16:16:21 +01:00
Ville Syrjälä
7ee6f99dbc drm/i915: Replace wm.max_levels with wm.num_levels and use it everywhere 
Replaces wm.max_level with wm.num_levels, since that generally
results in nicer looking code (for-loops can be in standard
form etc.).

Also get rid of the two different wrappers we have for this
(ilk_wm_max_level() and intel_wm_num_levels()). They don't
really do anything for us other than potentially slow things
down if the compiler actually emits the function calls every
time (num_planes*num_wm_levels*higher_level_wm_function_calls
could be a big number). The watermark code already shows up
far too prominently in cpu profiles. Though I must admit that
I didn't look at the generated code this time.

v2: Fix the ilk_wm_merge() off-by-one (Jani)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.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/20230209222504.31478-1-ville.syrjala@linux.intel.com
 2023-02-10 12:26:43 +02:00
Ville Syrjälä
064b3eee8e drm/i915: Populate wm.max_level for everyone 
Switch ilk+ and skl+ platforms to also setting up
wm.max_level and remove a bunch of if ladders as a result.

There will be a tiny change in the debugfs on CHV machines
that have DVFS disabled in the BIOS. Presviously debugfs
would show the latency for the DVFS level as well, but
that will no longer be the case. Which is arguably better
as that number is absolutely meaningless when DVFS can't
be enabled anyway.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.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/20230209003251.32021-1-ville.syrjala@linux.intel.com
 2023-02-10 12:26:25 +02:00
Radhakrishna Sripada
2b9ed318ad drm/i915/mtl: Initialize empty clockgating hooks for MTL 
Clock gating hooks to be initialized for MTL are yet to be implemented.
Use a nop till we identify relevant WA's here.

Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111235531.3353815-3-radhakrishna.sripada@intel.com
 2023-02-09 11:19:53 -08:00
Matt Roper
3a38be31ec drm/i915/dg2: Drop one PCI ID 
The bspec was recently updated to remove PCI ID 0x5698; this ID is
actually reserved for future use and should not be treated as DG2-G11.

Bspec: 44477
Fixes: 8618b8489b ("drm/i915: DG2 and ATS-M device ID updates")
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208200905.680865-1-matthew.d.roper@intel.com
 2023-02-08 15:22:27 -08:00
Ashutosh Dixit
05d5562e40 Revert "drm/i915/hwmon: Enable PL1 power limit" 
This reverts commit 0349c41b05.

0349c41b05 ("drm/i915/hwmon: Enable PL1 power limit") is incorrect and
caused a major regression on ATSM. The change enabled the PL1 power limit
but FW sets the default value of the PL1 limit to 0 which implies HW now
works at minimum power and therefore the lowest effective frequency. This
means all workloads now run slower resulting in even GuC FW load operations
timing out, rendering ATSM unusable.

A different solution to the original issue of the PL1 limit being disabled
on ATSM is needed but till that is developed, revert 0349c41b05.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8062
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230208190312.1611335-1-ashutosh.dixit@intel.com
 2023-02-08 15:06:38 -05:00
Jani Nikula
a0dcb06d29 drm/i915/bios: set default backlight controller index 
With backlight controller set to -1 in intel_panel_init_alloc() to
distinguish uninitialized values, and controller later being set only if
it's present in VBT, we can end up with -1 for the controller:

    [drm:intel_bios_init_panel [i915]] VBT backlight PWM modulation
    frequency 200 Hz, active high, min brightness 0, level 255,
    controller 4294967295

There's no harm if it happens on platforms that ignore controller due to
only one backlight controller being present, like on VLV above, but play
it safe.

Fixes: bf38bba3e7 ("drm/i915: Try to use the correct power sequencer intiially on bxt/glk")
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/20230207111626.1839645-1-jani.nikula@intel.com
 2023-02-08 13:16:59 +02:00
Jani Nikula
70994becf2 drm/i915/uncore: cast iomem to avoid sparse warning 
drmm_add_action_or_reset() is unaware of __iomem and the pointer needs
to be a plain void *. Cast __iomem away and back while the pointer goes
through drmm.

drivers/gpu/drm/i915/intel_uncore.c:2463:17: warning: incorrect type in argument 1 (different address spaces)
drivers/gpu/drm/i915/intel_uncore.c:2463:17:    expected void volatile [noderef] __iomem *addr
drivers/gpu/drm/i915/intel_uncore.c:2463:17:    got void *regs
drivers/gpu/drm/i915/intel_uncore.c:2494:16: warning: incorrect type in argument 3 (different address spaces)
drivers/gpu/drm/i915/intel_uncore.c:2494:16:    expected void *data
drivers/gpu/drm/i915/intel_uncore.c:2494:16:    got void [noderef] __iomem *regs

Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230207124026.2105442-2-jani.nikula@intel.com
 2023-02-08 12:45:46 +02:00
Jani Nikula
ac7215c423 drm/i915/dmc: drop "ucode" from function names 
The ucode part in the init, fini, suspend and resume function names is
just unnecessary. Drop it.

Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230207110619.1821992-1-jani.nikula@intel.com
 2023-02-08 12:31:15 +02:00
Ville Syrjälä
b337715463 drm/i915: Pick the backlight controller based on VBT on ICP+ 
Use the second backlight controller on ICP+ if the VBT asks
us to do so.

On pre-MTP we also check the chicken bit to make sure the
pins have been correctly muxed by the firmware.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8016
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230207064337.18697-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-08 03:07:56 +02:00
Ville Syrjälä
ba00eb6a4b drm/i915: Populate encoder->devdata for DSI on icl+ 
We now have some eDP+DSI dual panel systems floating around
where the DSI panel is the secondary LFP and thus needs to
consult "panel type 2" in VBT in order to locate all the
other panel type dependant stuff correctly.

To that end we need to pass in the devdata to
intel_bios_init_panel_late(), otherwise it'll just assume
we want the primary panel type. So let's try to just populate
the vbt.ports[] stuff and encoder->devdata for icl+ DSI
panels as well.

We can't do this on older platforms as there we risk a DSI
port aliasing with a HDMI/DP port, which is a totally legal
thing as the DSI ports live in their own little parallel
universe.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8016
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230207064337.18697-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-08 03:07:27 +02:00
Ville Syrjälä
118b5c136c drm/i915: Fix VBT DSI DVO port handling 
Turns out modern (icl+) VBTs still declare their DSI ports
as MIPI-A and MIPI-C despite the PHYs now being A and B.
Remap appropriately to allow the panels declared as MIPI-C
to work.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8016
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230207064337.18697-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-08 03:07:14 +02:00
Matt Atwood
389b9d91dd drm/i915: Fix memory leaks in scatterlist 
This patch fixes memory leaks on error escapes in i915_scatterlist.c

Fixes: c3bfba9a22 ("drm/i915: Check for integer truncation on scatterlist creation")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230201232801.123684-1-matthew.s.atwood@intel.com
 2023-02-06 08:51:57 -08:00
Jonathan Gray
54762e920e drm/i915: Add another EHL pci id 
described as "32 Execution Unit (EU) Super SKU" in:
Intel Atom x6000E Series, and Intel Pentium and Celeron N and
J Series Processors for IoT Applications
Datasheet, Volume 1
Document Number: 636112-1.6

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230206043727.46069-1-jsg@jsg.id.au
 2023-02-06 05:58:37 -08:00
Ashutosh Dixit
0349c41b05 drm/i915/hwmon: Enable PL1 power limit 
Previous documentation suggested that PL1 power limit is always
enabled. However we now find this not to be the case on some
platforms (such as ATSM). Therefore enable PL1 power limit during hwmon
initialization.

Bspec: 51864

v2: Add Bspec reference (Gwan-gyeong)
v3: Add Fixes tag

Fixes: 99f55efb79 ("drm/i915/hwmon: Power PL1 limit and TDP setting")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230203155309.1042297-1-ashutosh.dixit@intel.com
 2023-02-06 08:05:50 -05:00
Ville Syrjälä
36e491f8f6 drm/i915/dsb: Introduce intel_dsb_finish() 
Introduce a function to emits whatever commands we need
at the end of the DSB command buffer. For the moment we
only do the tail cacheline alignment there, but eventually
we might want to eg. emit an interrupt.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118163040.29808-5-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
 2023-02-03 14:04:01 +02:00
Ville Syrjälä
4b284831c6 drm/i915/dsb: Split intel_dsb_wait() from intel_dsb_commit() 
Starting the DSB execution vs. waiting for it stop are two
totally different things. Split intel_dsb_wait() from
intel_dsb_commit() so that we can eventually allow the DSB
to execute asynchronously.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118163040.29808-4-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
 2023-02-03 13:57:30 +02:00
Ville Syrjälä
7206b51766 drm/i915/dsb: Pimp debug/error prints 
Print the crtc/DSB id information to make it clear which DSB engine
we're talking about.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118163040.29808-3-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
 2023-02-03 13:56:43 +02:00
Jouni Högander
1af546c2ce drm/i915/fbdev: Implement fb_dirty for intel custom fb helper 
After disconnecting damage worker from update logic it's left to fbdev
emulation implementation to have fb_dirty function. Currently intel
fbdev doesn't have it. This is causing problems to features (PSR, FBC,
DRRS) relying on dirty callback.

Implement simple fb_dirty callback to deliver notifications about updates
in fb console.

v4: Add proper Fixes tag and modify commit message
v3: Check damage clip
v2: Improved commit message and added Fixes tag

Fixes: f231af498c ("drm/fb-helper: Disconnect damage worker from update logic")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230123074437.475103-1-jouni.hogander@intel.com
 2023-02-03 13:17:27 +02:00
Jani Nikula
247c7a4cda drm/i915/dmc: check incoming dmc id validity 
Add validity checks for the dmc ids computed from pipe parameters in
intel_dmc_enable_pipe() and intel_dmc_disable_pipe(). It's slightly
difficult for humans and static analyzers alike to ensure the resulting
dmc ids are within bounds. Just check them and reject invalid ones.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6a349c3a2b2def5fc31a48c9844ebd72ee55a22b.1675339447.git.jani.nikula@intel.com
 2023-02-02 21:34:21 +02:00
Jani Nikula
da97065e46 drm/i915/dmc: add is_valid_dmc_id() and use it 
Add a name to the dmc id validity check.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/311213ce328575a95d793a219d4dac7d947086cc.1675339447.git.jani.nikula@intel.com
 2023-02-02 21:34:18 +02:00
Jani Nikula
3965b8812e drm/i915/dmc: remove unnecessary dmc_id validity check 
The dmc_id comes from for_each_dmc_id() in parse_dmc_fw() ->
parse_dmc_fw_header() -> dmc_mmio_addr_sanity_check(). It's valid by
definition.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b4e1c862687f79861a5fa4bfa6797ecda2136fab.1675339447.git.jani.nikula@intel.com
 2023-02-02 21:34:14 +02:00
Jani Nikula
23cc452e9b drm/i915/dmc: add for_each_dmc_id() and use it 
The loop is duplicated many times, with slightly different ways. Unify.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8dcaa716093e6fbe75bb69ee7ac715a3f007a523.1675339447.git.jani.nikula@intel.com
 2023-02-02 21:34:12 +02:00
Jani Nikula
e4ef6503bd drm/i915/dmc: add proper name to dmc id enum and use it 
Clarify DMC ID usage by adding enum intel_dmc_id name to the enum, and
use dmc_id as the variable name for it throughout.

Convert a switch-case to if-ladder to avoid warnings about not handling
DMC_FW_MAX enumeration constant in the switch-case.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6912ccb411bb957c68c108b774745dbc7e0cbdc2.1675339447.git.jani.nikula@intel.com
 2023-02-02 21:33:59 +02:00
Ville Syrjälä
14f25bd0bb drm/i915: Expose SAGV state via debugfs 
Since SAGV is controlled via unidirectional pcode commands
we have no way to query the current state. So instead let's
expose the last programmed state via debugfs. This way we
can at least know whether SAGV should be enabled or not
(which can be important to know when dealing with underruns/etc.).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230131002127.29305-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-01 22:07:27 +02:00
Ville Syrjälä
9541fd164b drm/i915: Keep sagv status updated on icl+ 
On icl+ SAGV is controlled by masking of the QGV points.
Reduce the QGV point mask to the same kind of enabled vs.
disable information that we had on previous platforms.
Will be useful in answering the question whether SAGV is
actually enabled or not.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230131002127.29305-3-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
 2023-02-01 22:07:03 +02:00
Ville Syrjälä
43e6fad17a drm/i915: Introduce HAS_SAGV() 
Introuce a HAS_SAGV() macro to answer the question whether
the platform in general supports SAGV. intel_has_sagv() will
keep on giving us the more specific answer whether the current
device supports SAGV or not.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230131002127.29305-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-02-01 22:06:07 +02:00
Ville Syrjälä
c580c2d27a drm/i915: Don't do the WM0->WM1 copy w/a if WM1 is already enabled 
Due to a workaround we have to make sure the WM1 watermarks block/lines
values are sensible even when WM1 is disabled. To that end we copy those
values from WM0.

However since we now keep each wm level enabled on a per-plane basis
it doesn't seem necessary to do that copy when we already have an
enabled WM1 on the current plane. That is, we might be in a situation
where another plane can only do WM0 (and thus needs the copy) but
the current plane's WM1 is still perfectly valid (ie. fits into the
current DDB allocation).

Skipping the copy could avoid reprogramming the plane's registers
needlessly in some cases.

Fixes: a301cb0fca ("drm/i915: Keep plane watermarks enabled more aggressively")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230131002127.29305-1-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
 2023-02-01 22:05:48 +02:00
Ville Syrjälä
7fd7eacff0 drm/i915/lvds: s/pipe_config/crtc_state/ 
Call the crtc state 'crtc_state' rather than 'pipe_config',
as is the modern style.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-9-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
19d7dc6638 drm/i915/lvds: s/intel_encoder/encoder/ etc. 
Get rid of some of the annoying aliasing drm_ vs.
intel_ encoder/connector variables. Just prefer the
intel_ types.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-8-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
7f66476c93 drm/i915/lvds: s/dev_priv/i915/ 
Do the customary s/dev_priv/i915/ rename and aliasing
'dev' pointer removal. Though various register definitions
still depend on the magic 'dev_priv' variable so not
a 100% conversion.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-7-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
77d3b61302 drm/i915/lvds: Fix whitespace 
Replace some stray spaces with tabs.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
16bede135f drm/i915/lvds: Extract intel_lvds_regs.h 
Extract the integrated LVDS port register definitions
into their own header file.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
9dd56e979c drm/i915/lvds: Use REG_BIT() & co. 
Use REG_BIT() & co. for the LVDS port register.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
2324cdfffb drm/i915/lvds: Use intel_de_rmw() 
Replace the hand rolled rmw stuff with intel_de_rmw().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:06 +02:00
Ville Syrjälä
c76f67275f drm/i915/lvds: Split long lines 
Split some overly long lines.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130180540.8972-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
 2023-01-31 11:24:05 +02:00
Stanislav Lisovskiy
33d0c67dcb drm/i915: Implement workaround for CDCLK PLL disable/enable 
It was reported that we might get a hung and loss of register access in
some cases when CDCLK PLL is disabled and then enabled, while squashing
is enabled.
As a workaround it was proposed by HW team that SW should disable squashing
when CDCLK PLL is being reenabled.

v2: - Added WA number comment(Rodrigo Vivi)

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130135836.12738-1-stanislav.lisovskiy@intel.com
 2023-01-31 10:55:02 +02:00
Ankit Nautiyal
9c608cf39b drm/i915/hdmi: Go for scrambling only if platform supports TMDS clock > 340MHz 
There are cases, where devices have an HDMI1.4 retimer, and TMDS clock rate
is capped to 340MHz via VBT. In such cases scrambling might be supported
by the platform and an HDMI2.0 sink for lower TMDS rates, but not
supported by the retimer, causing blankouts.

So avoid enabling scrambling, if the TMDS clock is capped to <= 340MHz.

v2: Added comment, documenting the rationale to check for TMDS clock,
before going for scrambling. (Arun)

v3: Fixed the function name to check if source supports scrambling. (Jani)

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221222040851.3029514-1-ankit.k.nautiyal@intel.com
 2023-01-31 12:06:25 +05:30
Matt Roper
3c4b33d0e6 drm/i915/dg1: Drop final use of IS_DG1_GRAPHICS_STEP 
All production DG1 hardware has graphics stepping B0; there is no such
thing as C0.  As such, we can simplify

        IS_DG1_GRAPHICS_STEP(uncore->i915, STEP_A0, STEP_C0)

to just match DG1 in general.

Bspec: 44463
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230127224313.4042331-4-matthew.d.roper@intel.com
 2023-01-30 10:08:19 -08:00
Matt Roper
69ea87e159 drm/i915/dg1: Drop support for pre-production steppings 
Several post-DG1 platforms have been brought up now, so we're well past
the point where we usually drop the workarounds that are only applicable
to internal/pre-production hardware.

Production DG1 hardware always has a B0 stepping for both display and
GT.

Bspec: 44463
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230127224313.4042331-3-matthew.d.roper@intel.com
 2023-01-30 10:08:18 -08:00
Matt Roper
d1702963ab drm/i915/tgl: Drop support for pre-production steppings 
Several post-TGL platforms have been brought up now, so we're well past
the point where we usually drop the workarounds that are only applicable
to internal/pre-production hardware.

Production TGL hardware always has display stepping C0 or later and GT
stepping B0 or later (this is true for both the original TGL and the U/Y
subplatform).

Bspec 44455
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230127224313.4042331-2-matthew.d.roper@intel.com
 2023-01-30 10:08:16 -08:00