drm/i915/audio: Consider fractional vdsc bpp while computing tu_data

MTL+ supports fractional compressed bits_per_pixel, with precision of
1/16. This compressed bpp is stored in U6.4 format.
Accommodate the precision during calculation of transfer unit data
for hblank_early calculation.

v2:
-Fix tu_data calculation while dealing with U6.4 format. (Stan)

v3:
-Use BPP_X16_FMT to print vdsc bpp.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Link: https://patchwork.freedesktop.org/patch/msgid/20231110101020.4067342-5-ankit.k.nautiyal@intel.com

drm/i915/display: Store compressed bpp in U6.4 format

DSC parameter bits_per_pixel is stored in U6.4 format.
The 4 bits represent the fractional part of the bpp.
Currently we use compressed_bpp member of dsc structure to store
only the integral part of the bits_per_pixel.
To store the full bits_per_pixel along with the fractional part,
compressed_bpp is changed to store bpp in U6.4 formats. Intergral
part is retrieved by simply right shifting the member compressed_bpp by 4.

v2:
-Use to_bpp_int, to_bpp_frac_dec, to_bpp_x16 helpers while dealing
with compressed bpp. (Suraj)
-Fix comment styling. (Suraj)

v3:
-Add separate file for 6.4 fixed point helper(Jani, Nikula)
-Add comment for magic values(Suraj)

v4:
-Fix checkpatch warnings caused by renaming(Suraj)

v5:
-Rebase.
-Use existing helpers for conversion of bpp_int to bpp_x16
and vice versa.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Link: https://patchwork.freedesktop.org/patch/msgid/20231110101020.4067342-3-ankit.k.nautiyal@intel.com

drm/edid: include drm_eld.h only where required

Reduce the dependencies on drm_eld.h. Some files might be able to drop
the dependency on drm_edid.h too with the direct inclusion of drm_eld.h.

Cc: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/9f5963ce900d747f3279312c0cd1da599fd83f94.1698747331.git.jani.nikula@intel.com

drm/i915/display: remove redundant parameter from sdp split update

The needed functionality can be performed using crtc_state here.

Signed-off-by: Vinod Govindapillai <vinod.govindapillai@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/20230818111950.128992-2-vinod.govindapillai@intel.com

drm/i915: Flag purely internal commits to not clear crtc_state->inherited

If we have to force the hardware to go through a full modeset
due to eg. cdclk reprogramming, we need to preserve
crtc_state->inherited for all crtcs that have not otherwise
gone through the whole compute_config() stuff after connectors
have been detected.

Otherwise eg. cdclk induced modeset glk_force_audio_cdclk()
will clear the inherited flag, and thus the first real commit
coming from userspace later on will not be forced through
the full .compute_config() path and so eg. audio state may
not get properly recomputed.

But instead of adding all kinds of ad-hoc crtc_state->inherited
preservation hacks all over, let's change things so that we
only clear it for the crtcs directly included in userspace/client
initiated commits.

Should be far less fragile since now we just need to remember
to flag the internal commits, and not worry about where new
crtcs might get pulled in.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5260
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230328122357.1697-1-ville.syrjala@linux.intel.com
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>

drm/i915/audio: update audio keepalive clock values

BSPEC has updated the cdclk audio keepalives AUD_TS_CDCLK_M value to 60
for all supported platforms and refclks.

BSPEC: 54034
BSPEC: 55409
BSPEC: 65243
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316234654.3797572-1-clinton.a.taylor@intel.com

drm/i915/audio: Track audio state per-transcoder

The audio logic lives in the transcoder rather than the pipe,
so start tracking it like that.

This is only really important for bigjoiner cases where tracking
by pipe doesn't work at all since intel_audio_codec_{enable,disable}()
won't even be called for the slave pipe. This means the state
checker won't find the ELD for the slave pipe and gets upset.
The PD->has_audio readout does currently work since that gets
read out from the same transcoder for both pipes.

For other cases this doesn't actually matter since it's only
the normal pipe transcoders that are audio capable, whereas
the more special transcoders (EDP/DSI) are not.

v2: Fix kernel docs

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230222151454.24888-1-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8222

drm/i915/audio: Clean up the PCH type checks

Use explicit PCH type checks to make it more clear
which platforms use which codepaths.

Also reorder the branches in ibx_audio_regs_init()
a bit to be more in chronological order.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-14-ville.syrjala@linux.intel.com

drm/i915/audio: s/ilk/ibx/

Rename the ilk stuff to ibx, as the audio logic lives
in the PCH. The only exception are VLV/CHV but their audio
hardware was stolen from ibx so the name still fits.

Also most of the register defines also use the IBX namespace.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-13-ville.syrjala@linux.intel.com

drm/i915/audio: Hardware ELD readout

Read out the ELD from the hardware buffer, or from our stashed
copy for the audio component, so that we can hook up the state
checker to validate it.

v2: Deal with the platforms using acomp

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-7-ville.syrjala@linux.intel.com

drm/i915/audio: Don't enable audio with bogus ELD

Currently we just print a debug message if the ELD is bogus.
Maybe we should just not enable audio at all in that case?

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-6-ville.syrjala@linux.intel.com

drm/i915/audio: Precompute the ELD

Stash the ELD into the crtc_state and precompute it. This gets
rid of the ugly ELD mutation during intel_audio_codec_enable(),
and opens the door for the state checker.

v2: Make another copy for the acomp hooks (Chaitanya)
Split out the bogus ELD handling change (Jani)

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-5-ville.syrjala@linux.intel.com

drm/i915/audio: Introduce a struct for the acomp audio state

Currently we're spreading the stashed state for use of the
audio component hooks all over the place. Start collecting
it up into a single spot.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-4-ville.syrjala@linux.intel.com

drm/i915/audio: Don't program the hardware ELD buffer on hsw+

Since we use the audio component to transfer the ELD to the audio
driver on hsw+ platforms there is no point in even programming
the hardware ELD buffer. Stop doing so.

The one slight caveat here is that this is not strictly legal
according to the HDA spec. PD=1;ELD=0 is only documented as
an intermediate state during modeset. But if there is no hardware
that depends on that then I guess we're fine. Or we could
perhaps set ELD=1 without actually programming the buffer?

Note that the bspec sequence of PD=0;ELD=0 -> PD=1;ELD=0 ->
PD=1;ELD=1 is also not strictly correct according to the HDA
spec, as the only documented transition from PD=0;ELD=0 is
straight to PD=1;ELD=1.

Additionally on hsw/bdw the hardware buffer is tied in with the
dedicated display HDA controller's power state, so currently
we mostly fail at proramming the buffer anyway. When the HDA
side is not sufficiently powered up the ELD address bits get
stuck and the ELD data register accesses go nowhere.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
References: https://lore.kernel.org/intel-gfx/20221012104936.30911-1-ville.syrjala@linux.intel.com/
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-3-ville.syrjala@linux.intel.com

drm/i915/audio: Don't program the hardware ELD buffer on ilk+

Since we use the audio component to transfer the ELD to the audio
driver on ilk+ platforms there is no point in even programming
the hardware ELD buffer. Stop doing so.

The one slight caveat here is that this is not strictly legal
according to the HDA spec. PD=1;ELD=0 is only documented as
an intermediate state during modeset. But if there is no hardware
that depends on that then I guess we're fine. Or we could
perhaps set ELD=1 without actually programming the buffer?

Note that the bspec sequence of PD=0;ELD=0 -> PD=1;ELD=0 ->
PD=1;ELD=1 is also not strictly correct according to the HDA
spec, as the only documented transition from PD=0;ELD=0 is
straight to PD=1;ELD=1. But that is not even possible on
these platforms as the bits live in different registers.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-2-ville.syrjala@linux.intel.com

drm/i915: Enable SDP split for DP2.0

Enable the SDP split configuration for DP2.0.

v2: Move the register handling out of compute config function (JaniN)

v3: Patch styling and register access based on platform support (JaniN)

v4: Rebased

v5: Use unconditional clear bit in intel_de_rmw (Jani Nikula)

Bspec: 67768
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@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/20221121150718.1117628-1-vinod.govindapillai@intel.com

drm/i915/audio: Realign some function arguments

Fix up some function argument alignment fails.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221108151839.31567-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/audio: Unify get_saved_enc()

Make the two branches of get_saved_enc() look alike. Currently
they look different even though they do exactly the same thing
apart from == vs. != for the MST comparison.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221108151839.31567-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/audio: Do the vblank waits

The spec tells us to do a bunch of vblank waits in the audio
enable/disable sequences. Make it so.

The FIXMEs are nonsense since we do the audio disable very
early and enable very late, so vblank interrupts are in fact
enabled when we do this.

TODO not sure we actually want these since we don't even rely
on the hw ELD buffer, and these might be there just to give
the audio side a bit of time to respond to the unsol events.
OTOH they might be really needed for some other reason.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-15-ville.syrjala@linux.intel.com

drm/i915/audio: Split "ELD valid" vs. audio PD on hsw+

On the older platforms the audio presence detect bit is in
the port register, so it gets written outside audio codec hooks
and is this separate from the ELD valid toggling. Split the
operations into two steps on hsw+ to be more consistent with
both the other platforms and the spec. Also according to the
spec we might need some vblank waits between the two which
definitely needs them done separately.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-14-ville.syrjala@linux.intel.com

drm/i915/audio: Use intel_de_rmw() for most audio registers

The audio code does a lot of RMW accesses. Utilize
intel_de_rmw() to make that a bit less tedious.

There are still some hand rolled RMW left, but those have
a lot of code in between the read and write to calculate
the new value, so would need some refactoring first.

v2: Add parens around the ?: to satisfy the robot

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-13-ville.syrjala@linux.intel.com

drm/i915/audio: Use u32* for ELD

Make the eld pointer u32* so we don't have to do super
ugly casting in the code itself.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-12-ville.syrjala@linux.intel.com

drm/i915/audio: Make sure we write the whole ELD buffer

Currently we only write as many dwords into the hardware
ELD buffers as drm_eld_size() tells us. That could mean the
remainder of the hardware buffer is left with whatever
stale garbage it had before, which doesn't seem entirely
great. Let's zero out the remainder of the buffer in case
the provided ELD doesn't fill it fully.

We can also sanity check out idea of the hardware ELD buffer's
size by making sure the address wrapped back to zero once
we wrote the entire buffer.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-11-ville.syrjala@linux.intel.com

drm/i915/audio: Read ELD buffer size from hardware

We currently read the ELD buffer size from hardware on g4x,
but on ilk+ we just hardcode it to 84 bytes. Let's unify
this and just do the hardware readout on all platforms,
in case the size changes in the future or something.

TODO: should perhaps do the readout during driver init and
stash the results somewhere so that we could check that the
connector's ELD actually fits and not even try to enable audio
in that case...

v2: Document the size is in dwords (Jani)

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-10-ville.syrjala@linux.intel.com

drm/i915/audio: Nuke intel_eld_uptodate()

No idea why we do this ELD comparions on g4x before loading
the new ELD. Seems entirely pointless so just get rid of it.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-9-ville.syrjala@linux.intel.com

drm/i915/audio: Protect singleton register with a lock

On the "ilk" platforms AUD_CNTL_ST2 is a singleton. Protect
it with the audio mutex in case we ever want to do parallel
RMW access to it.

Currently that should not happen since we only do audio
enable/disable from full modesets, and those are fully
serialized. But we probably want to think about toggling
audio on/off from fastsets too.

The hsw codepaths already have the same locking.
g4x should not need it since it can only do audio to a
single port at a time, which means it's actually broken
in more ways than this atm.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-8-ville.syrjala@linux.intel.com

drm/i915/audio: Unify register bit naming

Rename a few g4x bits to match the ibx+ bits.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-7-ville.syrjala@linux.intel.com

drm/i915/audio: Use REG_BIT() & co.

Switch the audio registers to REG_BIT() & co.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-6-ville.syrjala@linux.intel.com

drm/i915/audio: Extract struct ilk_audio_regs

The "ilk" audio codec codepaths have some duplicated code
to figure out the correct registers to use on each platform.
Extrat that into a single place.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-5-ville.syrjala@linux.intel.com

drm/i915/audio: Remove CL/BLC audio stuff

We don't use the audio code on crestline (CL) since it doesn't
support native HDMI output, and SDVO has it's own way of doing
audio.

And Bearlake-C (BLC) doesn't even exist in the real world, so
no point it trying to deal with it.

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-4-ville.syrjala@linux.intel.com

drm/i915/audio: Nuke leftover ROUNDING_FACTOR

Remove some leftovers I missed in commit
2dd43144e824 ("drm/i915: Streamline the artihmetic")

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-3-ville.syrjala@linux.intel.com

drm/i915/audio: s/dev_priv/i915/

Rename the 'dev_priv' variables to 'i915' in the audio code
to match modern style conventions.

v2: Drop some needless braces in intel_audio_hooks_init()

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026170150.2654-2-ville.syrjala@linux.intel.com

drm/i915: move and group cdclk under display.cdclk

Move display cdclk related members under drm_i915_private display
sub-struct.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7df23655be5dc70fb1a2b43ce41e1682e40395d8.1661779055.git.jani.nikula@intel.com

drm/i915: move and split audio under display.audio and display.funcs

Move display audio related members under drm_i915_private display
sub-struct.

Split audio funcs to display.funcs to follow the same pattern as all the
other display functions.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/51c0b966963a8b47efe3a431e0ce106bdd5269c5.1661346845.git.jani.nikula@intel.com

drm/i915/regs: split out intel audio register definitions

Split out audio registers to a header of its own to reduce the size of
i915_reg.h.

TODO: Remove direct audio register access from intel_ddi.c. However,
unification of audio get config is cumbersome due to the audio enable
bit being in the DP or HDMI registers on older platforms.

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/20220602094542.1386151-1-jani.nikula@intel.com

drm/i915/audio: fix audio code enable/disable pipe logging

Need to use pipe_name(pipe) instead of pipe directly.

Fixes: 1f31e35f2e88 ("drm/i915/audio: unify audio codec enable/disable debug logging")
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/20220512161638.272601-1-jani.nikula@intel.com

drm/i915/audio: fix audio code enable/disable pipe logging

Need to use pipe_name(pipe) instead of pipe directly.

Fixes: 1f31e35f2e88 ("drm/i915/audio: unify audio codec enable/disable debug logging")
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/20220512161638.272601-1-jani.nikula@intel.com
(cherry picked from commit 945ae909aa76f55ac8c9e95feb3683512d39134a)

drm/i915/audio: move has_audio checks to within codec enable/disable

Reduce duplication.

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/20220330094109.4164326-2-jani.nikula@intel.com

drm/i915/audio: unify audio codec enable/disable debug logging

The audio codec enable/disable debug logging is spread around in callers
and the platform specific hooks. Put them all together in one place on
both the enable and disable paths.

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/20220330094109.4164326-1-jani.nikula@intel.com

drm/i915: s/intel_get_first_crtc/intel_first_crtc/

Since we got rid of the "_get_" from intel_get_crtc_for_pipe()
let's do the same for intel_get_first_crtc() for consistency.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211203112029.1057-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/trace: split out display trace to a separate file

Add display/intel_display_trace.[ch] for defining display
tracepoints. The main goal is to reduce cross-includes between gem and
display. It would be possible split up tracing even further, but that
would lead to more boilerplate.

We end up having to include intel_crtc.h in a few places because it was
pulled in implicitly via intel_de.h -> i915_trace.h -> intel_crtc.h, and
that's no longer the case.

There should be no changes to tracepoints.

v3:
- Rebase

v2:
- Define TRACE_INCLUDE_PATH relative to define_trace.h (Chris)
- Remove useless comments (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>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7862ad764fbd0748d903c76bc632d3d277874e5b.1638961423.git.jani.nikula@intel.com

drm/i915/audio: rename intel_init_audio_hooks to intel_audio_hooks_init

Follow the filename based prefix naming.

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/20211104161858.21786-6-jani.nikula@intel.com

drm/i915/audio: move intel_audio_funcs internal to intel_audio.c

It's all internal to intel_audio.c.

Cc: Dave Airlie <airlied@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211104161858.21786-4-jani.nikula@intel.com

drm/i915/audio: name the audio sub-struct in drm_i915_private

Add name to the audio sub-struct in drm_i915_private, and remove the
tautologies and other inconsistencies in the member names.

v2: Call the mutex member mutex, not lock. (Ville)

Cc: Dave Airlie <airlied@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211104161858.21786-2-jani.nikula@intel.com

drm/i915/display: program audio CDCLK-TS for keepalives

XE_LPD display adds support for display audio codec keepalive feature.
This feature works also when display codec is in D3 state and the audio
link is off (BCLK off). To enable this functionality, display driver
must update the AUD_TS_CDCLK_M/N registers whenever CDCLK is changed.
Actual timestamps are generated only when the audio codec driver
specifically enables the KeepAlive (KAE) feature.

This patch adds new hooks to intel_set_cdclk() in order to inform
display audio driver when CDCLK change is started and when it is
complete.

Bspec: 53679
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211021105915.4128635-1-kai.vehmanen@linux.intel.com

Revert "drm/i915: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()"

This reverts commit 746826bcf8fdf682668ff1c415d6b91dbf5858be.

This patchset breaks on intel platforms and was previously NACK'd by
Ville.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Fernando Ramos <greenfoo@u92.eu>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211002154542.15800-5-sean@poorly.run

drm/i915: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()

As requested in Documentation/gpu/todo.rst, replace driver calls to
drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
DRM_MODESET_LOCK_ALL_END()

Signed-off-by: Fernando Ramos <greenfoo@u92.eu>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924064324.229457-13-greenfoo@u92.eu

drm/i915: constify the audio function vtable

Move the functions into read-only tables.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5a481307a5daab40a506c3b9a64b0b37e01a1a41.1632869550.git.jani.nikula@intel.com

drm/i915: split audio functions from display vtable

These are only used internally in the audio code

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/d12257cc7685a9b52618f7da444ba1fc8848b4db.1632869550.git.jani.nikula@intel.com

drm/i915/audio: Use BIOS provided value for RKL HDA link

Commit 989634fb49ad ("drm/i915/audio: set HDA link parameters in
driver") makes HDMI audio on Lenovo P350 disappear.

So in addition to TGL, extend the logic to RKL to use BIOS provided
value to fix the regression.

Fixes: 989634fb49ad ("drm/i915/audio: set HDA link parameters in driver")
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210906041300.508458-1-kai.heng.feng@canonical.com

drm/i915/audio: Use BIOS provided value for RKL HDA link

Commit 989634fb49ad ("drm/i915/audio: set HDA link parameters in
driver") makes HDMI audio on Lenovo P350 disappear.

So in addition to TGL, extend the logic to RKL to use BIOS provided
value to fix the regression.

Fixes: 989634fb49ad ("drm/i915/audio: set HDA link parameters in driver")
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210906041300.508458-1-kai.heng.feng@canonical.com
(cherry picked from commit c6b40ee330fe09b332715bb7ec1467e4fcbe2e65)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/dg1: Adjust the AUDIO power domain

DG1 and XE_PLD platforms has Audio MMIO/VERBS lies in PG0 power
well. Adjusting the power domain accordingly to
POWER_DOMAIN_AUDIO_MMIO for audio detection and
POWER_DOMAIN_AUDIO_PLAYBACK for audio playback.

While doing this it requires to use POWER_DOMAIN_AUDIO_MMIO
power domain instead of POWER_DOMAIN_AUDIO in crtc power domain mask
and POWER_DOMAIN_AUDIO_PLAYBACK with intel_display_power_{get, put}
to enable/disable display audio codec power.

It will save the power in use cases when DP/HDMI connectors
configured with PIPE_A without any audio playback.

v1: Changes since RFC
- changed power domain names. [Imre]
- Removed TC{3,6}, AUX_USBC{3,6} and TBT from DG1
power well and PW_3 power domains. [Imre]
- Fixed the order of powe wells , power domains and its
registration. [Imre]

v2:
- Not allowe DC states when AUDIO_MMIO domain enabled. [Imre]

v3:
- Squashes the commits of series to avoid build failure.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
[Fix typo in commit message and in AUDIO_PLAYBACK domain name]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210729121858.16897-2-anshuman.gupta@intel.com

drm/i915: Don't include intel_de.h from intel_display_types.h

Hoist the intel_de.h include from intel_display_types.h one
level up. I need this in order to untangle the include order
so that I can add tracepoints into intel_de.h.

This little cocci script did most of the work for me:
@find@
@@
(
intel_de_read(...)
|
intel_de_read_fw(...)
|
intel_de_write(...)
|
intel_de_write_fw(...)
)

@has_include@
@@
(
#include "intel_de.h"
|
#include "display/intel_de.h"
)

@depends on find && !has_include@
@@
+ #include "intel_de.h"
#include "intel_display_types.h"

@depends on find && !has_include@
@@
+ #include "display/intel_de.h"
#include "display/intel_display_types.h"

Cc: Cooper Chiou <cooper.chiou@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@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/20210430143945.6776-1-ville.syrjala@linux.intel.com

drm/i915/audio: fix indentation, remove extra braces

Cleanup the code. No functional changes.

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/6c2f6afa4c8866f8c1714b4f8dba9ea2d1509e4a.1620115983.git.jani.nikula@intel.com

drm/i915/audio: simplify, don't mask out in all branches

Lift the masking outside of the if branches. No functional changes.

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/a87fd5e66b52c4d52a568888e1b8037841786fd2.1620115982.git.jani.nikula@intel.com

drm/i915/display: rename display version macros

While converting the rest of the driver to use GRAPHICS_VER() and
MEDIA_VER(), following what was done for display, some discussions went
back on what we did for display:

1) Why is the == comparison special that deserves a separate
macro instead of just getting the version and comparing directly
like is done for >, >=, <=?

2) IS_DISPLAY_RANGE() is weird in that it omits the "_VER" for
brevity. If we remove the current users of IS_DISPLAY_VER(), we
could actually repurpose it for a range check

With (1) there could be an advantage if we used gen_mask since multiple
conditionals be combined by the compiler in a single and instruction and
check the result. However a) INTEL_GEN() doesn't use the mask since it
would make the code bigger everywhere else and b) in the cases it made
sense, it also made sense to convert to the _RANGE() variant.

So here we repurpose IS_DISPLAY_VER() to work with a [ from, to ] range
like was the IS_DISPLAY_RANGE() and convert the current IS_DISPLAY_VER()
users to use == and != operators. Aside from the definition changes,
this was done by the following semantic patch:

@@ expression dev_priv, E1; @@
- !IS_DISPLAY_VER(dev_priv, E1)
+ DISPLAY_VER(dev_priv) != E1

@@ expression dev_priv, E1; @@
- IS_DISPLAY_VER(dev_priv, E1)
+ DISPLAY_VER(dev_priv) == E1

@@ expression dev_priv, from, until; @@
- IS_DISPLAY_RANGE(dev_priv, from, until)
+ IS_DISPLAY_VER(dev_priv, from, until)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
[Jani: Minor conflict resolve while applying.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210413051002.92589-4-lucas.demarchi@intel.com

drm/i915/display: use DISPLAY_VER() on remaining users

Commit 989634fb49ad ("drm/i915/audio: set HDA link parameters in driver")
added INTEL_GEN() in the display code, where it should actually be using
DISPLAY_VER(). Switch to the new macro.

Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210413051002.92589-2-lucas.demarchi@intel.com

drm/i915/audio: set HDA link parameters in driver

Update logic to program AUD_FREQ_CNTRL register based on new guidance.
Earlier this register was configured by BIOS and driver discovered the
value at init. This is no longer recommended and instead driver should
set the values based on the hardware revision.

Add the recommended values for all supported hardware. This change applies
for all GEN12+ hardware. For TGL, some special case handling is needed
to not break existing systems.

Extend the debug print to also include values of the register as written
by BIOS. This can help debug rare cases where BIOS has configured the link
settings to incorrect values.

Bspec: 49279
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210324123725.4170214-1-kai.vehmanen@linux.intel.com

drm/i915/display: Simplify GLK display version tests

GLK has always been a bit of a special case since it reports INTEL_GEN()
as 9, but has version 10 display IP. Now we can properly represent the
display version as 10 and simplify the display generation tests
throughout the display code.

Aside from manually adding the version to the glk_info structure, the
rest of this patch is generated with a Coccinelle semantic patch. Note
that we also need to switch any code that matches gen10 today but *not*
GLK to be CNL-specific:

@@ expression dev_priv; @@
- DISPLAY_VER(dev_priv) > 9
+ DISPLAY_VER(dev_priv) >= 10

@@ expression dev_priv, E; @@
(
- DISPLAY_VER(dev_priv) >= 10 && E
+ (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)) && E
|
- DISPLAY_VER(dev_priv) >= 10
+ DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)
|
- IS_DISPLAY_RANGE(dev_priv, 10, E)
+ IS_DISPLAY_RANGE(dev_priv, 11, E) || IS_CANNONLAKE(dev_priv)
)

@@ expression dev_priv, E, E2; @@
(
- (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+ IS_DISPLAY_VER(dev_priv, 10)
|
- E || IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)
+ E || IS_DISPLAY_VER(dev_priv, 10)
|
- (IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv))
+ IS_DISPLAY_VER(dev_priv, 10)
|
- IS_GEMINILAKE(dev_priv) || E || IS_CANNONLAKE(dev_priv)
+ E || IS_DISPLAY_VER(dev_priv, 10)
|
- E || IS_GEMINILAKE(dev_priv) || E2 || IS_CANNONLAKE(dev_priv)
+ E || E2 || IS_DISPLAY_VER(dev_priv, 10)
|
- (IS_DISPLAY_VER(dev_priv, 10) || IS_GEMINILAKE(dev_priv))
+ IS_DISPLAY_VER(dev_priv, 10)
|
- (IS_GEMINILAKE(dev_priv) || IS_DISPLAY_VER(dev_priv, 10))
+ IS_DISPLAY_VER(dev_priv, 10)
)

@@ expression dev_priv; @@
- (IS_DISPLAY_VER(dev_priv, 9) && !IS_GEMINILAKE(dev_priv))
+ IS_DISPLAY_VER(dev_priv, 9)

@@ expression dev_priv; @@
(
- !(DISPLAY_VER(dev_priv) >= 11 || IS_DISPLAY_VER(dev_priv, 10))
+ DISPLAY_VER(dev_priv) < 10
|
- (DISPLAY_VER(dev_priv) >= 11 || IS_DISPLAY_VER(dev_priv, 10))
+ DISPLAY_VER(dev_priv) >= 10
)

@@ expression dev_priv, E; @@
- E || DISPLAY_VER(dev_priv) >= 11 || IS_DISPLAY_VER(dev_priv, 10)
+ E || DISPLAY_VER(dev_priv) >= 10

@@ expression dev_priv, E; @@
- (IS_DISPLAY_RANGE(dev_priv, 11, E) || IS_DISPLAY_VER(dev_priv, 10))
+ IS_DISPLAY_RANGE(dev_priv, 10, E)

@@ expression dev_priv; @@
(
- DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv) || IS_GEN9_LP(dev_priv)
+ DISPLAY_VER(dev_priv) >= 10 || IS_GEN9_LP(dev_priv)
|
- IS_GEN9_LP(dev_priv) || DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)
+ IS_GEN9_LP(dev_priv) || DISPLAY_VER(dev_priv) >= 10
)

@@ expression dev_priv, E; @@
- !(DISPLAY_VER(dev_priv) >= E)
+ DISPLAY_VER(dev_priv) < E

v2:
- Convert gen10 conditions that don't include GLK into CNL conditions.
(Ville)

v3:
- Rework coccinelle rules so that "ver>=10" turns into "ver>=11||is_cnl." (Ville)

v3.1:
- Manually re-add the ".display.version = 10" to glk_info after
regenerating patch via Coccinelle.

v4:
- Also apply cocci rules to intel_pm.c and i915_irq.c! (CI)

Cc: Ville Syrjälä <ville.syrjala@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210322233840.4056851-1-matthew.d.roper@intel.com

drm/i915/display: Eliminate most usage of INTEL_GEN()

Use Coccinelle to convert most of the usage of INTEL_GEN() and IS_GEN()
in the display code to use DISPLAY_VER() comparisons instead. The
following semantic patch was used:

@@ expression dev_priv, E; @@
- INTEL_GEN(dev_priv) == E
+ IS_DISPLAY_VER(dev_priv, E)

@@ expression dev_priv; @@
- INTEL_GEN(dev_priv)
+ DISPLAY_VER(dev_priv)

@@ expression dev_priv; expression E; @@
- IS_GEN(dev_priv, E)
+ IS_DISPLAY_VER(dev_priv, E)

@@
expression dev_priv;
expression from, until;
@@
- IS_GEN_RANGE(dev_priv, from, until)
+ IS_DISPLAY_RANGE(dev_priv, from, until)

There are still some display-related uses of INTEL_GEN() in intel_pm.c
(watermark code) and i915_irq.c. Those will be updated separately.

v2:
- Use new IS_DISPLAY_RANGE and IS_DISPLAY_VER helpers. (Jani)

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210320044245.3920043-4-matthew.d.roper@intel.com

drm/i915: Nuke force_min_cdclk_changed

Since we now have proper old and new cdclk state we no longer
need to keep this flag to indicate that the force min cdclk has
changed. Instead just check if the old vs. new value are different.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200714152626.380-4-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

drm/i915: Streamline the artihmetic

All these ROUNDING_FACTORs and whatnot are making this thing hard to
read. Get rid of them. And let's massage some of the fractions to
give us less questionable intermediate results and perhaps less
divisions.

Also looks like a good helping of 64bit math stuff is needed to
avoid some of overflows present in the current code. There
might still be a few overflows, namely when calculating
link_clks_available/samples_room (would require a huge hblank
though), and potentially when calculating hblank_rise (not sure
how large link_clks_active can get).

It looks like we're still not calculating exactly what the spec says
since we truncate tu_data and tu_line early. But I'm too lazy to
figure out if we could avoid that.

v2: Fix typo in commit msg (Uma)
Remove ROUNDING_FACTOR define (Uma)
s/5*link_clk+5*cdclk/5*(link_clk+cdclk)/ (Chris)

Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200429185457.26235-3-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>

drm/i915: Rename variables to be consistent with bspec

Since the code seems insistent on using the variable names from the
bspec formulat, let's be consistent and use those names for all
the things. For some reason 'link_clk' and 'lanes' were left out
in the code until now.

Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200429185457.26235-2-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>

drm/i915: Nuke mode.vrefresh usage

mode.vrefresh is rounded to the nearest integer. You don't want to use
it anywhere that requires precision. Also I want to nuke it.
vtotal*vrefresh == 1000*clock/htotal, so let's use the latter.

Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200429185457.26235-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>

drm/i915/audio: fix compressed_bpp check

The early check for compressed_bpp being zero is too early, as it is hit
also when DSC is not enabled. Move the checks down to where the values
are actually needed. This is a paranoid check for a situation that
should not happen, so we don't really care about handling it gracefully
apart from not oopsing.

Fixes: 48b8b04c791d ("drm/i915/display: Enable DP Display Audio WA")
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1750
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200420131632.23283-1-jani.nikula@intel.com

drm/i915/audio: error log non-zero audio power refcount after unbind

We have some module unload/reload tests hitting an issue with i915
unbinding the component interface before the audio driver has properly
put the power. Log an error about it for ease of debugging. (Normally
this leads to a wakeref debug splat on the power well.)

Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200417065132.23048-1-jani.nikula@intel.com

drm/i915/display: Enable DP Display Audio WA

For certain DP VDSC bpp settings, hblank asserts before hblank_early,
leading to a bad audio state. Driver need to program "hblank early
enable" and "samples per line" parameters in AUDIO_CONFIG_BE
register.

This is Display Audio WA #1406928334 for 4k+VDSC usecase
applicable on DP encoders. Implemented the same.

v2: Fixed build failures on 32bit machine.

v3: Dropped u64, added helpers for sample room calculation,
other general comments as per Jani Nikula's feedback.
Also fixed connector type check (spotted by Anshuman)

v4: Addressed Jani Nikula and Kai's review comments.

v5: Addressed Anshuman's review comment and used crtc_* variable
to get timings.

v6: Dropped a redundant initialization.

Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200416105419.9664-1-uma.shankar@intel.com

drm/i915: do AUD_FREQ_CNTRL state save on all gen9+ platforms

Replace the TGL/ICL specific platform checks with a more generic check
using INTEL_GEN(). Fixes bug with broken audio after S3 resume on JSL
platforms.

An initial version of state save and restore of AUD_FREQ_CNTRL register
was added for subset of platforms in commit 87c1694533c9
("drm/i915: save AUD_FREQ_CNTRL state at audio domain suspend"). The state
save has proven to work well and it is needed in newer platforms, so needs
to be extended. Although the logic is not in practise needed on GEN9/10
systems, follow the hardware specification and apply state and restore on
all gen9+ platforms.

Bspec: 49281
Link: https://github.com/thesofproject/linux/issues/1719
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200330144421.11632-1-kai.vehmanen@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>

drm/i915/audio: use struct drm_device based logging

Convert all the DRM_* logging macros to the struct drm_device based
macros to provide device specific logging.

No functional changes.

Generated using the following semantic patch, originally written by
Wambui Karuga <wambui.karugax@gmail.com>, with manual fixups on top:

@@
identifier fn, T;
@@

fn(...,struct drm_i915_private *T,...) {
<+...
(
-DRM_INFO(
+drm_info(&T->drm,
...)
|
-DRM_NOTE(
+drm_notice(&T->drm,
...)
|
-DRM_ERROR(
+drm_err(&T->drm,
...)
|
-DRM_WARN(
+drm_warn(&T->drm,
...)
|
-DRM_DEBUG_DRIVER(
+drm_dbg(&T->drm,
...)
|
-DRM_DEBUG_KMS(
+drm_dbg_kms(&T->drm,
...)
|
-DRM_DEBUG_ATOMIC(
+drm_dbg_atomic(&T->drm,
...)
)
...+>
}

@@
identifier fn, T;
@@

fn(...) {
...
struct drm_i915_private *T = ...;
<+...
(
-DRM_INFO(
+drm_info(&T->drm,
...)
|
-DRM_NOTE(
+drm_notice(&T->drm,
...)
|
-DRM_ERROR(
+drm_err(&T->drm,
...)
|
-DRM_WARN(
+drm_warn(&T->drm,
...)
|
-DRM_DEBUG_DRIVER(
+drm_dbg(&T->drm,
...)
|
-DRM_DEBUG_KMS(
+drm_dbg_kms(&T->drm,
...)
|
-DRM_DEBUG_ATOMIC(
+drm_dbg_atomic(&T->drm,
...)
)
...+>
}

Cc: Wambui Karuga <wambui.karugax@gmail.com>
Reviewed-by: Wambui Karuga <wambui.karugax@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200402114819.17232-1-jani.nikula@intel.com

drm/i915: use forced codec wake on all gen9+ platforms

Commit 632f3ab95fe2 ("drm/i915/audio: add codec wakeup override
enabled/disable callback"), added logic to toggle Codec Wake on gen9.
This is used by audio driver when it resets the HDA controller.

It seems explicit toggling of the wakeline can help to fix problems
with probe failing on some gen12 platforms. And based on specs, there
is no reason why this programming sequence should not be applied to all
gen9+ platforms. No side-effects are seen on gen10/11. So apply
the wake-logic to all gen9+ platforms.

Link: https://github.com/thesofproject/linux/issues/1847
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200324153212.6303-1-kai.vehmanen@linux.intel.com

drm/i915: Add missing HDMI audio pixel clocks for gen12

Gen12 hardware supports HDMI audio pixel clocks of 296.7/297Mhz
and 593.4/594Mhz. Add the missing rates and add logic to ignore
them if running on older hardware.

Bspec: 49333
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200310162338.9387-1-kai.vehmanen@linux.intel.com

drm/i915: Get first crtc instead of PIPE_A crtc

intel_plane_fb_max_stride should return the max stride of
primary plane for first available pipe in intel device info
pipe_mask.
Similarly glk_force_audio_cdclk() should also use the first
available CRTC instead of pipe 'A' crtc to force the cdclk
changes.

changes since RFC:
- Introduced a helper to get first intel_crtc intel_get_first_crtc. [Ville]
v1:
- Used intel_get_first_crtc() instead of PIPE_A crtc in
glk_force_audio_cdclk(). [Ville]

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200224124004.26712-6-anshuman.gupta@intel.com

drm/i915/audio: Skip the cdclk modeset if no pipes attached

If the display is not driving any pipes, we cannot change the bclk and
doing so risks chasing NULL pointers:

<6> [278.907105] snd_hda_intel 0000:00:0e.0: DSP detected with PCI class/subclass/prog-if info 0x040100
<6> [278.909936] snd_hda_intel 0000:00:0e.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
<7> [278.910078] i915 0000:00:02.0: [drm:intel_power_well_enable [i915]] enabling power well 2
<1> [278.910228] BUG: kernel NULL pointer dereference, address: 0000000000000080
<1> [278.910243] #PF: supervisor read access in kernel mode
<1> [278.910251] #PF: error_code(0x0000) - not-present page
<6> [278.910260] PGD 0 P4D 0
<4> [278.910267] Oops: 0000 [#1] PREEMPT SMP PTI
<4> [278.910276] CPU: 0 PID: 5 Comm: kworker/0:0 Tainted: G U 5.5.0-CI-CI_DRM_7853+ #1
<4> [278.910289] Hardware name: Intel Corp. Geminilake/GLK RVP2 LP4SD (07), BIOS GELKRVPA.X64.0062.B30.1708222146 08/22/2017
<4> [278.910312] Workqueue: events azx_probe_work [snd_hda_intel]
<4> [278.910327] RIP: 0010:__ww_mutex_lock.constprop.15+0x5e/0x1090
<4> [278.910338] Code: 75 88 be a7 03 00 00 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 4c 89 c3 e8 5e b3 6d ff 44 8b 3d 2f 24 37 02 45 85 ff 75 0a <4d> 3b 6d 58 0f 85 3f 07 00 00 48 85 db 74 22 49 8b 95 80 00 00 00
<4> [278.910362] RSP: 0018:ffffc9000008bc10 EFLAGS: 00010246
<4> [278.910371] RAX: 0000000000000246 RBX: ffffc9000008bd30 RCX: 0000000000000001
<4> [278.910382] RDX: 0000000000000000 RSI: ffffffff82647c60 RDI: ffff88817b27d848
<4> [278.910393] RBP: ffffc9000008bcc0 R08: 0000000000000000 R09: 0000000000000001
<4> [278.910404] R10: ffffc9000008bce0 R11: 0000000000000000 R12: ffffffff8168f0fc
<4> [278.910414] R13: 0000000000000028 R14: ffffc9000008bd60 R15: 0000000000000000
<4> [278.910425] FS: 0000000000000000(0000) GS:ffff88817bc00000(0000) knlGS:0000000000000000
<4> [278.910437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [278.910446] CR2: 0000000000000080 CR3: 00000001650da000 CR4: 0000000000340ef0
<4> [278.910456] Call Trace:
<4> [278.910468] ? mark_held_locks+0x49/0x70
<4> [278.910479] ? ww_mutex_lock+0x39/0x70
<4> [278.910487] ww_mutex_lock+0x39/0x70
<4> [278.910497] drm_modeset_lock+0x6c/0x120
<4> [278.910575] glk_force_audio_cdclk+0x7d/0x140 [i915]
<4> [278.910656] i915_audio_component_get_power+0xf2/0x110 [i915]
<4> [278.910673] snd_hdac_display_power+0x7d/0x120 [snd_hda_core]
<4> [278.910686] azx_probe_work+0x88/0x7e0 [snd_hda_intel]

v2: Reorder glk_force_audio_cdclk() parameters to fit in with the norm.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/1095
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200203133408.187493-1-chris@chris-wilson.co.uk

drm/i915/display/audio: Make WARN* drm specific where drm_priv ptr is available

drm specific WARN* calls include device information in the
backtrace, so we know what device the warnings originate from.

Covert all the calls of WARN* with device specific drm_WARN*
variants in functions where drm_i915_private struct pointer is readily
available.

The conversion was done automatically with below coccinelle semantic
patch. checkpatch errors/warnings are fixed manually.

@rule1@
identifier func, T;
@@
func(...) {
...
struct drm_i915_private *T = ...;
<+...
(
-WARN(
+drm_WARN(&T->drm,
...)
|
-WARN_ON(
+drm_WARN_ON(&T->drm,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(&T->drm,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(&T->drm,
...)
)
...+>
}

@rule2@
identifier func, T;
@@
func(struct drm_i915_private *T,...) {
<+...
(
-WARN(
+drm_WARN(&T->drm,
...)
|
-WARN_ON(
+drm_WARN_ON(&T->drm,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(&T->drm,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(&T->drm,
...)
)
...+>
}

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200128181603.27767-3-pankaj.laxminarayan.bharadiya@intel.com

drm/i915: Convert cdclk to global state

Let's convert cdclk_state to be a proper global state. That allows
us to use the regular atomic old vs. new state accessor, hopefully
making the code less confusing.

We do have to deal with a few more error cases in case the cdclk
state duplication fails. But so be it.

v2: Fix new plane min_cdclk vs. old crtc min_cdclk check

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200121140353.25997-1-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

drm/i915: Introduce better global state handling

Our current global state handling is pretty ad-hoc. Let's try to
make it better by imitating the standard drm core private object
approach.

The reason why we don't want to directly use the private objects
is locking; Each private object has its own lock so if we
introduce any global private objects we get serialized by that
single lock across all pipes. The global state apporoach instead
uses a read/write lock type of approach where each individual
crtc lock counts as a read lock, and grabbing all the crtc locks
allows one write access.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200120174728.21095-15-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

drm/i915: Extract intel_cdclk_state

Use the same structure to store the cdclk state in both
intel_atomic_state and dev_priv. First step towards proper
old vs. new cdclk states.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200120174728.21095-10-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>

drm/i915/audio: use intel_de_*() functions for register access

The implicit "dev_priv" local variable use has been a long-standing pain
point in the register access macros I915_READ(), I915_WRITE(),
POSTING_READ(), I915_READ_FW(), and I915_WRITE_FW().

Replace them with the corresponding new display engine register
accessors intel_de_read(), intel_de_write(), intel_de_posting_read(),
intel_de_read_fw(), and intel_de_write_fw().

No functional changes.

Generated using the following semantic patch:

@@
expression REG, OFFSET;
@@
- I915_READ(REG)
+ intel_de_read(dev_priv, REG)

@@
expression REG, OFFSET;
@@
- POSTING_READ(REG)
+ intel_de_posting_read(dev_priv, REG)

@@
expression REG, OFFSET;
@@
- I915_WRITE(REG, OFFSET)
+ intel_de_write(dev_priv, REG, OFFSET)

@@
expression REG;
@@
- I915_READ_FW(REG)
+ intel_de_read_fw(dev_priv, REG)

@@
expression REG, OFFSET;
@@
- I915_WRITE_FW(REG, OFFSET)
+ intel_de_write_fw(dev_priv, REG, OFFSET)

Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ca53d8a5ecd1045325447b728376c8aa2891905f.1579871655.git.jani.nikula@intel.com

drm/i915/audio: convert to struct drm_device logging macros.

Converts the printk based logging macros in i915/display/intel_audio.c
to the struct drm_device based logging macros.
This transformation was achieved using the following coccinelle script
that matches the existence of the struct drm_i915_private device:

@rule1@
identifier fn, T;
@@

fn(struct drm_i915_private *T,...) {
<+...
(
-DRM_INFO(
+drm_info(&T->drm,
...)
|
-DRM_ERROR(
+drm_err(&T->drm,
...)
|
-DRM_WARN(
+drm_warn(&T->drm,
...)
|
-DRM_DEBUG(
+drm_dbg(&T->drm,
...)
|
-DRM_DEBUG_DRIVER(
+drm_dbg(&T->drm,
...)
|
-DRM_DEBUG_KMS(
+drm_dbg_kms(&T->drm,
...)
)
...+>
}

@rule2@
identifier fn, T;
@@

fn(...) {
...
struct drm_i915_private *T = ...;
<+...
(
-DRM_INFO(
+drm_info(&T->drm,
...)
|
-DRM_ERROR(
+drm_err(&T->drm,
...)
|
-DRM_WARN(
+drm_warn(&T->drm,
...)
|
-DRM_DEBUG(
+drm_dbg(&T->drm,
...)
|
-DRM_DEBUG_KMS(
+drm_dbg_kms(&T->drm,
...)
|
-DRM_DEBUG_DRIVER(
+drm_dbg(&T->drm,
...)
)
...+>
}

Checkpatch warnings were manually fixed.

Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200121134559.17355-4-wambui.karugax@gmail.com

drm/i915: Use the passed in encoder

Just use the passed in encoder instead of digging it out via
the legacy drm_connector->encoder pointer (which we'll want to
stop using).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204180549.1267-5-ville.syrjala@linux.intel.com
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>

drm/i915: Limit audio CDCLK>=2*BCLK constraint back to GLK only

Revert changes done in commit f6ec9483091f ("drm/i915: extend audio
CDCLK>=2*BCLK constraint to more platforms"). Audio drivers
communicate with i915 over HDA bus multiple times during system
boot-up and each of these transactions result in matching
get_power/put_power calls to i915, and depending on the platform,
a modeset change causing visible flicker.

GLK is the only platform with minimum CDCLK significantly lower
than BCLK, and thus for GLK setting a higher CDCLK is mandatory.

For other platforms, minimum CDCLK is close but below 2*BCLK
(e.g. on ICL, CDCLK=176.4kHz with BCLK=96kHz). Spec-wise the constraint
should be set, but in practise no communication errors have been
reported and the downside if set is the flicker observed at boot-time.

Revert to old behaviour until better mechanism to manage
probe-time clocks is available.

The full CDCLK>=2*BCLK constraint is still enforced at pipe
enable time in intel_crtc_compute_min_cdclk().

Bugzilla: https://gitlab.freedesktop.org/drm/intel/issues/913
Fixes: f6ec9483091f ("drm/i915: extend audio CDCLK>=2*BCLK constraint to more platforms")
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191231140007.31728-1-kai.vehmanen@linux.intel.com
(cherry picked from commit 1ee48a61aa57dbdbc3cd2808d8b28df40d938e44)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915: Limit audio CDCLK>=2*BCLK constraint back to GLK only

Revert changes done in commit f6ec9483091f ("drm/i915: extend audio
CDCLK>=2*BCLK constraint to more platforms"). Audio drivers
communicate with i915 over HDA bus multiple times during system
boot-up and each of these transactions result in matching
get_power/put_power calls to i915, and depending on the platform,
a modeset change causing visible flicker.

GLK is the only platform with minimum CDCLK significantly lower
than BCLK, and thus for GLK setting a higher CDCLK is mandatory.

For other platforms, minimum CDCLK is close but below 2*BCLK
(e.g. on ICL, CDCLK=176.4kHz with BCLK=96kHz). Spec-wise the constraint
should be set, but in practise no communication errors have been
reported and the downside if set is the flicker observed at boot-time.

Revert to old behaviour until better mechanism to manage
probe-time clocks is available.

The full CDCLK>=2*BCLK constraint is still enforced at pipe
enable time in intel_crtc_compute_min_cdclk().

Bugzilla: https://gitlab.freedesktop.org/drm/intel/issues/913
Fixes: f6ec9483091f ("drm/i915: extend audio CDCLK>=2*BCLK constraint to more platforms")
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191231140007.31728-1-kai.vehmanen@linux.intel.com

drm/i915: Perform automated conversions for crtc uapi/hw split, base -> uapi.

Split up crtc_state->base to uapi. This is done using the following patch,
ran after the previous commit that splits out any hw references:

@@
struct intel_crtc_state *T;
@@
-T->base
+T->uapi

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031112610.27608-5-maarten.lankhorst@linux.intel.com

drm/i915: Perform automated conversions for crtc uapi/hw split, base -> hw.

Split up crtc_state->base to hw where appropriate. This is done using the following patch:

@@
struct intel_crtc_state *T;
identifier x =~ "^(active|enable|degamma_lut|gamma_lut|ctm|mode|adjusted_mode)$";
@@
-T->base.x
+T->hw.x

@@
struct drm_crtc_state *T;
identifier x =~ "^(active|enable|degamma_lut|gamma_lut|ctm|mode|adjusted_mode)$";
@@
-to_intel_crtc_state(T)->base.x
+to_intel_crtc_state(T)->hw.x

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031112610.27608-4-maarten.lankhorst@linux.intel.com

drm/i915: Rework global state locking

So far we've sort of protected the global state under dev_priv with
the connection_mutex. I wan to change that so that we can change the
cdclk even for pure plane updates. To that end let's formalize the
protection of the global state to follow what I started with the cdclk
code already (though not entirely properly) such that any crtc mutex
will suffice as a read lock, and all crtcs mutexes act as the write
lock.

We'll also pimp intel_atomic_state_clear() to clear the entire global
state, so that we don't accidentally leak stale information between
the locking retries.

As a slight optimization we'll only lock the crtc mutexes to protect
the global state, however if and when we actually have to poke the
hw (eg. if the actual cdclk changes) we must serialize commits
across all crtcs so that a parallel nonblocking commit can't get
ahead of the cdclk reprogamming. We do that by adding all crtcs to
the state.

TODO: the old global state examined during commit may still
be a problem since it always looks at the _latest_ swapped state
in dev_priv. Need to add proper old/new state for that too I think.

v2: Remeber to serialize the commits if necessary

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191015193035.25982-3-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

drm/i915: extend audio CDCLK>=2*BCLK constraint to more platforms

The CDCLK>=2*BCLK constraint applies to all generations since gen10.
Extend the constraint logic in audio get/put_power().

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003085531.30990-2-kai.vehmanen@linux.intel.com

drm/i915: Fix audio power up sequence for gen10+ display

On platfroms with gen10+ display, driver must set the enable bit of
AUDIO_PIN_BUF_CTL register before transactions with the HDA controller
can proceed. Add setting this bit to the audio power up sequence.

Failing to do this resulted in errors during display audio codec probe,
and failures during resume from suspend.

Note: We may also need to disable the bit afterwards, but there are
still unresolved issues with that.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111214
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003085531.30990-1-kai.vehmanen@linux.intel.com

drm/i915: save AUD_FREQ_CNTRL state at audio domain suspend

When audio power domain is suspended, the display driver must
save state of AUD_FREQ_CNTRL on Tiger Lake and Ice Lake
systems. The initial value of the register is set by BIOS and
is read by driver during the audio component init sequence.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920083918.27057-1-kai.vehmanen@linux.intel.com

drm/i915: Prefer encoder->name over port_name()

enum port is a mess now because it no longer matches the spec
at all. Let's start to dig ourselves out of this hole by
reducing our reliance on port_name(). This should at least make
a bunch of debug messages a bit more sensible while we think how
to fill the the hole properly.

Based on the following cocci script with a lot of manual cleanup
(all the format strings etc.):
@@
expression E;
@@
(
- port_name(E->port)
+ E->base.base.id, E->base.name
|
- port_name(E.port)
+ E.base.base.id, E.base.name
)

@@
enum port P;
expression E;
@@
P = E->port
<...
- port_name(P)
+ E->base.base.id, E->base.name
...>

@@
enum port P;
expression E;
@@
P = E.port
<...
- port_name(P)
+ E.base.base.id, E.base.name
...>

@@
expression E;
@@
{
- enum port P = E;
... when != P
}

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190830182719.32608-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

drm/i915: rename intel_drv.h to display/intel_display_types.h

Everything about the file is about display, and mostly about types
related to display. Move under display/ as intel_display_types.h to
reflect the facts.

There's still plenty to clean up, but start off with moving the file
where it logically belongs and naming according to contents.

v2: fix the include guard name in the renamed file

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190806113933.11799-1-jani.nikula@intel.com

drm/i915: Add N & CTS values for 10/12 bit deep color

Adding N & CTS values for 10/12 bit deep color from Appendix C
table in HDMI 2.0 spec. The correct values for N is not chosen
automatically by hardware for deep color modes.

v2: Remove unnecessary initialization of size

Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
Cc: Clint Taylor <Clinton.A.Taylor@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190627220708.31700-2-aditya.swarup@intel.com

drm/i915: Use port clock to set correct N value

Use port_clock to check the clock values in n/cts lookup table instead
of crtc_clock. As port_clock is already adjusted based on color mode set
(8 bit or deep color), this will help in checking clock values for deep
color modes from n/cts lookup table.

Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
Cc: Clint Taylor <Clinton.A.Taylor@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190627220708.31700-1-aditya.swarup@intel.com

drm/i915: move modesetting core code under display/

Now that we have a new subdirectory for display code, continue by moving
modesetting core code.

display/intel_frontbuffer.h sticks out like a sore thumb, otherwise this
is, again, a surprisingly clean operation.

v2:
- don't move intel_sideband.[ch] (Ville)
- use tabs for Makefile file lists and sort them

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613084416.6794-3-jani.nikula@intel.com