drm/i915: WARN if a port should use VBT provided vswing tables

We don't parse the VBT vswing/preemphassis tables at all currently.
Let's WARN if a port wants to use them so we get a heads up that
whether we really need to implement this stuff or not. My
current stash contains no VBTs with this bit set.

v2: Move to print_ddi_port() (Jani)

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916204132.10469-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/display: remove ipc_enabled from struct drm_i915_private

The ipc_enabled member was supposed to be moved under the display wm
sub-struct, but due to a rebase fail only the new one was added and the
old one was left behind. Finish the job.

Fixes: 70296670f672 ("drm/i915/display: move IPC under display wm sub-struct")
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/20220916113850.3712354-1-jani.nikula@intel.com

drm/i915/hotplug: refactor hotplug init slightly

Rename intel_hpd_init_work() to the more generic intel_hpd_init_early(),
and move the hotplug storm initialization there. This lets us move the
HPD_STORM_DEFAULT_THRESHOLD macro to intel_hotplug.c too.

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/20220916130634.3781122-2-jani.nikula@intel.com

drm/i915/hotplug: move hotplug storm debugfs to intel_hotplug.c

The debugfs should be where the implementation details are.

v2: Rebase

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/20220916130634.3781122-1-jani.nikula@intel.com

drm/i915: Fix return type of mode_valid function hook

All of the functions used for intel_dvo_dev_ops.mode_valid have a return
type of enum drm_mode_status, but the mode_valid field in the struct
definition has a return type of int.

The mismatched return type breaks forward edge kCFI since the underlying
function definitions do not match the function hook definition.

The return type of the mode_valid field should be changed from int to
enum drm_mode_status.

Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220913205531.155046-1-nhuck@google.com

drm/i915/mtl: Update CHICKEN_TRANS* register addresses

In Display version 14, Transcoder Chicken Registers have updated address.
This patch performs checks to use the right register when required.

v2: Omit display version check in i915_reg.h(Jani)
v3:
 - Remove extra whitespace introduced
 - Fix reg definitions for MTL_CHICKEN_TRANS(MattR)

Bspec: 34387, 50054
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Madhumitha Tolakanahalli Pradeep <madhumitha.tolakanahalli.pradeep@intel.com>
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/20220913183341.908028-6-radhakrishna.sripada@intel.com

drm/i915/mtl: Update MBUS_DBOX credits

Display version 14 platforms have different credits values
compared to ADL-P. Update the credits based on pipe usage.

v2: Simplify DBOX BW Credit definition(MattR)
v3:
 - Simplify only pipe per dbuf bank check(MattR)
 - Skip modeset check to handle the case when a new pipe within
   dbuf bank gets added/removed.(MattR)

Bspec: 49213

Cc: Jose Roberto de Souza <jose.souza@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Original Author: Caz Yokoyama
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
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/20220913183341.908028-5-radhakrishna.sripada@intel.com

drm/i915/dsc: convert dsc debugfs entry from output_bpp to input_bpc

Convert dsc debugfs entry from output_bpp to input_bpc. The rationale
is to validate different input bpc across various platforms.

v2: -improved commit message (Jani N)
    -styling fixes (Jani N)

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902190658.9459-2-swati2.sharma@intel.com

drm/i915/ipc: use intel_uncore_rmw() to enable/disable

Don't duplicate the rmw function.

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/113a17cd18401b0e4c83396575b67aa6efb07346.1662983005.git.jani.nikula@intel.com

drm/i915/display: move IPC under display wm sub-struct

Move display IPC related member under drm_i915_private display
sub-struct.

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/04ccaaceee9293e5a6c75761ba9d36792c36f095.1662983005.git.jani.nikula@intel.com

drm/i915/ipc: register debugfs only if IPC available

It looks like trying to enable IPC via debugfs on platforms that don't
have IPC resulted in dmesg info message about IPC being enabled, which
is clearly not possible and would not happen.

Seems sensible to register IPC debugfs only on platforms that have IPC.

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/b18edb4f96c9d2ec728ef04e6f99d161fe5641d1.1662983005.git.jani.nikula@intel.com

drm/i915/ipc: move IPC debugfs to skl_watermark.c

Follow the new direction for debugfs files, moving the details where the
implementation is. It seems quite natural skl_watermark.c is the place
that controls IPC details, even for debugfs, not
intel_display_debugfs.c.

Rename the functions and convert dev_priv->i915 while at it.

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/9d59b18f5dc06e86a48c1ce0f40d625f51e3e85a.1662983005.git.jani.nikula@intel.com

drm/i915/ipc: refactor and rename IPC functions

Rename the IPC functions to have skl_watermark_ipc_ prefix, rename
enable to update to reflect what the function actually does, and add
enabled function to abstract direct ->ipc_enabled access for state
query.

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/536237d5bc919e8c97a96796f235f5bb264ceff2.1662983005.git.jani.nikula@intel.com

drm/i915/display: Use drm helper instead of own loop for damage clips

Use existing drm_atomic_helper_damage_merged from generic drm code
instead of implementing own loop to iterate over damage_clips.

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/20220823112920.352563-4-jouni.hogander@intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>

drm/i915/display: Use original src in psr2 sel fetch area calculation

drm_plane_state->src is modified when offset is calculated:

before calculation:
src.x1 = 8192, src.y1 = 8192

after calculation (pitch = 65536, cpp = 4, alignment = 262144)
src.x1 = 8192, src.y1 = 0, offset = 0x20000000

Damage clips are relative to original coodrdinates provided by
user-space. To compare these against src coordinates we need to use
original coordinates as provided by user-space. These can be obtained
by using drm_plane_state_src.

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/20220823112920.352563-3-jouni.hogander@intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>

drm/i915/psr: Disable PSR2 when SDP is sent on prior line

Selective update doesn't work if SU start address is 0 and start/end
SDP is configured to be sent prior to SU start/end lines. PSR2 has to be
disabled in this case for Alder Lake.

HSDES: 22012279113

Cc: Mika Kahola <mika.kahola@intel.com>
Cc: José Roberto de Souza <jose.souza@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/20220905102355.176622-3-jouni.hogander@intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>

drm/i915/psr: Equation changed for sending start/stop on prior line

Equation for sending start/end SDP prior to the SU region start/end
has changed. Update used formula.

Bspec: 49274

Cc: Mika Kahola <mika.kahola@intel.com>
Cc: José Roberto de Souza <jose.souza@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/20220905102355.176622-2-jouni.hogander@intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>

drm/i915: Fix TV encoder clock computation

The TV encoder has its own special clocking strategy,
which means we can't just use intel_crtc_dotclock() to
figure out what the resulting dotclock will be given
the actual DPLL port_clock. Additionally the DPLL can't
always generate exactly the frequency we initially asked
for. This results in us computing a bogus dotclock/etc.,
and it won't match the readout which is handled by the
encoder itself properly. Naturally the state checker
becomes unhappy with the mismatch.

To do this sanely we'll need to move the DPLL computation
into encoder->compute_config() so that all the derived
state gets correctly computed based on the actual DPLL
output frequency. Start doing that just for the TV encoder
initally as intel_crtc_dotclock() should be able to handle
other encoder types well enough. Though eventually this
should be done for all encoder types rather than
doing it from intel_crtc_compute_config().

With this we actually do some of the DPLL state computation
twice, but we can skip the second actual .find_dpll() search
by flagging .clock_set=true after we've done it once. We also
still need to avoid clobbering the correct
adjusted_mode.crtc_clock set up by encoder->compute_config()
when called a second time from intel_crtc_compute_config().

Fixes: 665a7b04092c ("drm/i915: Feed the DPLL output freq back into crtc_state")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220909205932.32537-1-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/bios: Add the "Disable compression for the Display Port/HDMI external display" bit

The child device block has gained a new bit for disabling
compression for external displays. Seems stupid, but there it is.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907093534.29004-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/bios: Fix VBT ACPI DPMS bit polarity

We have the ACPI vs. not ACPI DPMS bit polarity the
wrong way around. Fix it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907093534.29004-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/dp: use drm_dp_phy_name() for logging

Drop the local intel_dp_phy_name() function, and replace with
drm_dp_phy_name(). This lets us drop a number of local buffers.

v2: Rebase

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220912132313.2774603-1-jani.nikula@intel.com

drm/i915/mtl: Obtain SAGV values from MMIO instead of GT pcode mailbox

From Meteorlake, Latency Level, SAGV bloack time are read from
LATENCY_SAGV register instead of the GT driver pcode mailbox. DDR type
and QGV information are also to be read from Mem SS registers.

v2:
 - Simplify MTL_MEM_SS_INFO_QGV_POINT macro(MattR)
 - Nit: Rearrange the bit def's from higher to lower(MattR)
 - Restore platform definition for ADL-P(MattR)
 - Move back intel_qgv_point def to intel_bw.c(Jani)
v3:
 - Rebase

Bspec: 64636, 64608

Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Original Author: Caz Yokoyama
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902060342.151824-9-radhakrishna.sripada@intel.com

drm/i915/mtl: Add DP AUX support on TypeC ports

On MTL TypeC ports the AUX_CH_CTL and AUX_CH_DATA addresses have
changed wrt. previous platforms, adjust the code accordingly.

Signed-off-by: Imre Deak <imre.deak@intel.com>
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/20220902060342.151824-8-radhakrishna.sripada@intel.com

drm/i915/mtl: Add display power wells

Add support for display power wells on MTL. The differences from XE_LPD:
- The AUX HW block is moved to the PICA block, where the registers are on
  an always-on power well and the functionality needs to be powered on/off
  via the AUX_CH_CTL register: [1], [2]
- The DDI IO power on/off programming sequence is moved to the PHY PLL
  enable/disable sequence. [3], [4], [5]

Bspec: [1] 49233, [2] 65247, [3] 64568, [4] 65451, [5] 65450

v2:
 - Update the comment in aux power well enable
 - Reuse the noop sync fn for aux sync.
 - Use REG_BIT for new register bit definitions

Signed-off-by: Imre Deak <imre.deak@intel.com>
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/20220902060342.151824-7-radhakrishna.sripada@intel.com

drm/i915/mtl: Add gmbus and gpio support

Add tables to map the GMBUS pin pairs to GPIO registers and port to DDC.
From spec we have registers GPIO_CTL[1-5] mapped to native display phys and
GPIO_CTL[9-12] are mapped to TC ports.

v2:
 - Drop unused GPIO pins(MattR)

BSpec: 49306

Cc: Matt Roper <matthew.d.roper@intel.com>
Original Author: Brian J Lovin
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902060342.151824-6-radhakrishna.sripada@intel.com

drm/i915: Move display and media IP version to runtime info

Future platforms can read the IP version from a register and the
IP version numbers need not be hard coded in device info. Move the
ip version for media and display to runtime info.

On platforms where hard coding of IP version is required, update
the IP version in __runtime under device_info.

v2:
 - Avoid name collision for ip versions(Jani)
v4.1:
 - Fix build error in mock_gem_device.c
v4.2:
 - Use ip instead of version for ip_vesion member.(MattR)

Suggested-by: Jani Nikula <jani.nikula@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
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/20220902221054.173524-1-radhakrishna.sripada@intel.com

Merge drm/drm-next into drm-intel-next

Backmerge to sync the DP MST atomic changes to drm-intel-next.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drm/vkms: fix 32bit compilation error by replacing macros

Replace vkms_formats macro for fixed-point operations with functions
from drm/drm_fixed.h to do the same job and fix 32-bit compilation
errors.

v2:
- don't cast results to s32 (Igor)
- add missing drm_fixp2int conversion (Igor)

Fixes: a19c2ac9858 ("drm: vkms: Add support to the RGB565 format")
Tested-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> (v1)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220910190303.682897-1-mwen@igalia.com

Merge tag 'drm-misc-next-2022-09-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v6.1-rc1:

[airlied - fix sun4i_tv build]

UAPI Changes:
- Hide unregistered connectors from GETCONNECTOR ioctl.
- drm/virtio no longer advertises LINEAR modifier, as it doesn't work.
-

Cross-subsystem Changes:
- Fix GPF in udmabuf failure path.

Core Changes:
- Rework TTM placement to use intersect/compatible functions.
- Drop legacy DP-MST support.
- More DP-MST related fixes, and move all state into atomic.
- Make DRM_MIPI_DBI select DRM_KMS_HELPER.
- Add audio_infoframe packing for DP.
- Add logging when some atomic check functions fail.
- Assorted documentation updates and fixes.

Driver Changes:
- Assorted cleanups and fixes in msm, lcdif, nouveau, virtio,
  panel/ilitek, bridge/icn6211, tve200, gma500, bridge/*, panfrost, via,
  bochs, qxl, sun4i.
- Add add AUO B133UAN02.1, IVO M133NW4J-R3, Innolux N120ACA-EA1 eDP panels.
- Improve DP-MST modeset state handling in amdgpu, nouveau, i915.
- Drop DP-MST from radeon driver, it was broken and only user of legacy
  DP-MST.
- Handle unplugging better in vc4.
- Simplify drm cmdparser tests.
- Add DP support to ti-sn65dsi86.
- Add MT8195 DP support to mediatek.
- Support RGB565, XRGB64, and ARGB64 formats in vkms.
- Convert sun4i tv support to atomic.
- Refactor vc4/vec TV Modesetting, and fix timings.
- Use atomic helpers instead of simple display helpers in ssd130x.

Maintainer changes:
- Add Douglas Anderson as reviewer for panel-edp.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a489485b-3ebc-c734-0f80-aed963d89efe@linux.intel.com

drm/i915: Use REG_FIELD_GET() to extract skl+ wm latencies

Replace the hand rolled stuff with REG_FIELD_GET() for reading
out the skl+ watermark latencies.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908191646.20239-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915: Extract skl_watermark.c

Pull all the skl+ watermark code (and the dbuf/sagv/ipc code
since it's all sort of intertwined and I'm too lazy to think
of a finer grained split right now) into its own file from the
catch-all intel_pm.c.

Also sneak in the s/dev_priv/i915/ rename while at it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908191646.20239-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915: Split intel_read_wm_latency() into per-platform versions

No reaon to have this humongous if ladder in intel_read_wm_latency().
Just split it into nicer per-platforms functions.

Also do the s/dev_priv/i915/ while touching all of this code.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908191646.20239-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/i915/dsb: hide struct intel_dsb better

struct intel_dsb can be an opaque type, hidden in intel_dsb.c. Make it
so. Reduce related includes while at it.

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/20220908165702.973854-1-jani.nikula@intel.com

drm/dp_mst: Avoid deleting payloads for connectors staying enabled

When an MST connector stays enabled during a commit the connector's MST
state needs to be added to the atomic state, but the corresponding MST
payload allocation shouldn't be set for deletion; fix such modesets by
ensuring the above even if the connector was already enabled before the
modeset.

The issue led to the following:
[  761.992923] i915 0000:00:02.0: drm_WARN_ON(payload->delete)
[  761.992949] WARNING: CPU: 6 PID: 1401 at drivers/gpu/drm/display/drm_dp_mst_topology.c:4221 drm_dp_atomic_find_time_slots+0x236/0x280 [drm_display_helper]
[  761.992955] Modules linked in: snd_hda_intel i915 drm_buddy drm_display_helper drm_kms_helper ttm drm snd_hda_codec_hdmi snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm prime_numbers i2c_algo_bit syscopyarea sysfillrect sysimgblt fb_sys_fops x86_pkg_temp_thermal cdc_ether coretemp crct10dif_pclmul usbnet crc32_pclmul mii ghash_clmulni_intel e1000e mei_me ptp i2c_i801 pps_core mei i2c_smbus intel_lpss_pci fuse [last unloaded: drm]
[  761.992986] CPU: 6 PID: 1401 Comm: testdisplay Tainted: G     U             6.0.0-rc4-imre+ #565
[  761.992989] Hardware name: Intel Corporation Alder Lake Client Platform/AlderLake-P DDR5 RVP, BIOS ADLPFWI1.R00.3135.A00.2203251419 03/25/2022
[  761.992990] RIP: 0010:drm_dp_atomic_find_time_slots+0x236/0x280 [drm_display_helper]
[  761.992994] Code: 4c 8b 67 50 4d 85 e4 75 03 4c 8b 27 e8 03 28 4e e1 48 c7 c1 8b 26 2c a0 4c 89 e2 48 c7 c7 a8 26 2c a0 48 89 c6 e8 31 d5 88 e1 <0f> 0b 49 8b 85 d0 00 00 00 4c 89 fa 48 c7 c6 a0 41 2c a0 48 8b 78
[  761.992995] RSP: 0018:ffffc9000177ba60 EFLAGS: 00010286
[  761.992998] RAX: 0000000000000000 RBX: ffff88810d2f1540 RCX: 0000000000000000
[  761.992999] RDX: 0000000000000001 RSI: ffffffff82368a25 RDI: 00000000ffffffff
[  761.993000] RBP: ffff888142299d80 R08: ffff8884adbfdfe8 R09: 00000000ffefffff
[  761.993001] R10: ffff8884a6bfe000 R11: ffff8884ac443c30 R12: ffff888102972f90
[  761.993002] R13: ffff8881163e2cf0 R14: 00000000000003ac R15: ffff88810c501000
[  761.993003] FS:  00007f81e4c459c0(0000) GS:ffff888496500000(0000) knlGS:0000000000000000
[  761.993004] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  761.993005] CR2: 0000555dac962a98 CR3: 0000000123a34006 CR4: 0000000000770ee0
[  761.993006] PKRU: 55555554
[  761.993007] Call Trace:
[  761.993009]  <TASK>
[  761.993012]  intel_dp_mst_compute_config+0x19a/0x350 [i915]
[  761.993090]  intel_atomic_check+0xf37/0x3180 [i915]
[  761.993168]  drm_atomic_check_only+0x5d3/0xa60 [drm]
[  761.993182]  drm_atomic_commit+0x56/0xc0 [drm]
[  761.993192]  ? drm_plane_get_damage_clips.cold+0x1c/0x1c [drm]
[  761.993204]  drm_atomic_helper_set_config+0x78/0xc0 [drm_kms_helper]
[  761.993214]  drm_mode_setcrtc+0x1ed/0x750 [drm]
[  761.993232]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[  761.993241]  drm_ioctl_kernel+0xb5/0x150 [drm]
[  761.993252]  drm_ioctl+0x203/0x3d0 [drm]
[  761.993261]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[  761.993276]  __x64_sys_ioctl+0x8a/0xb0
[  761.993281]  do_syscall_64+0x38/0x90
[  761.993285]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  761.993287] RIP: 0033:0x7f81e551aaff
[  761.993288] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 77 1f 48 8b 44 24 18 64 48 2b 04 25 28 00
[  761.993290] RSP: 002b:00007fff4304af10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  761.993292] RAX: ffffffffffffffda RBX: 00007fff4304afa0 RCX: 00007f81e551aaff
[  761.993293] RDX: 00007fff4304afa0 RSI: 00000000c06864a2 RDI: 0000000000000004
[  761.993294] RBP: 00000000c06864a2 R08: 0000000000000000 R09: 0000555dac8a9c68
[  761.993294] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000008c4
[  761.993295] R13: 0000000000000004 R14: 0000555dac8a9c68 R15: 00007fff4304b098
[  761.993301]  </TASK>

Fixes: 083351e96386 ("drm/display/dp_mst: Fix modeset tracking in drm_dp_atomic_release_vcpi_slots()")
Testcase: igt@testdisplay
Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907142542.1681994-1-imre.deak@intel.com

drm/panel-edp: Add Innolux N120ACA-EA1 panel entry

This panel has the same delay timing as N116BCA-EA1 from the same
company, which is also the same as delay_200_500_e80_d50.

Add an entry for it.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908085454.1024167-2-wenst@chromium.org

drm/sun4i: tv: Merge mode_set into atomic_enable

Our mode_set implementation can be merged into our atomic_enable
implementation to simplify things, so let's do this.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-36-459522d653a7@cerno.tech

drm/i915: Round TMDS clock to nearest

Use round-to-nearest behavour when calculating the TMDS clock.
Matches what we do for most other clock related things.

Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-18-ville.syrjala@linux.intel.com

drm/i915: Use a fixed N value always

Windows/BIOS always uses fixed N values. Let's match that
behaviour.

Allows us to also get rid of that constant_n quirk stuff.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-17-ville.syrjala@linux.intel.com

drm/i915: Allow M/N change during fastset on bdw+

On BDW+ M/N are double buffered and so we can easily reprogram them
during a fastset. So for eDP panels that support seamless DRRS we
can just change these without a full modeset.

For earlier platforms we'd need to play tricks with M1/N1 vs.
M2/N2 during the fastset to make sure we do the switch atomically.
Not sure the added complexity is worth the hassle, so leave it
alone for now.

The slight downside is that we have to keep the link running at
a link rate capable of supporting the highest refresh rate we
want to use. For the moment we just pick the highest mode the
panel reports and calculate the link based on that. This might
need further refinement (eg. if we run into bandwidth
restrictions)...

v2: Only use the high link rate if the platform really supports
    the seamless M/N change uring fastset (ie. bdw+)
v3: Rebase due to HAS_DOUBLE_BUFFERED_M_N()

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-16-ville.syrjala@linux.intel.com

drm/i915: Add intel_panel_highest_mode()

Add a function to get the fixed_mode with the highest clock.
The plan is to use this for the link bw calculation on seamless
DRRS panels so that we alwasy end up with the same link params
regardless of the requested refresh rate. This will allow fastset
to do seamless refresh rate changes based on userspace request
instead of having to go for a full modeset.

TODO: the function name isn't great

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-15-ville.syrjala@linux.intel.com

drm/i915: Skip intel_modeset_pipe_config_late() if the pipe is not enabled

No sense in calling intel_modeset_pipe_config_late() for a disabled
pipe.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-14-ville.syrjala@linux.intel.com

drm/i915: Nuke fastet state copy hacks

Now that we no longer do the fuzzy clock and M/N checks we can
get rid of the fastset state copy hacks.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-13-ville.syrjala@linux.intel.com

drm/i915: Set active dpll early for icl+

To make the fastboot checks at least somewhat sensible let's mark
the expected DPLL as the active one right after we finished the
state computation. Otherwise intel_pipe_config_compare() will
always be comparing things against NULL/0.

TODO: This is still not really right. If the previous commit
had to fall back to the other PLL then the comparisong will
now fail. I guess intel_pipe_config_compare() should rather
be comparing port_dplls[] instead. But to do that we really
should just unify every platform to use the port_dplls[]
approach whether they have any need for PLL fallbacks or not.

Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-12-ville.syrjala@linux.intel.com

drm/i915: Make all clock checks non-fuzzy

Now that we backfeed the actual DPLL frequency into the
compute crtc state all our clocks should come out exact.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-11-ville.syrjala@linux.intel.com

drm/i915: Make M/N checks non-fuzzy

Now that we no longer fuzz M/N during fastset these should
match exctly.

In order to get a match with what the BIOS does we need to round
M/N down. And we do the opposite rounding when doing the readback.
That gets us pretty much the same thing back.

There can still be slight rounding differences between FDI M/N
vs. the DPLL output so we allow for tiny deviation in
intel_pipe_config_sanity_check().

v2: Tweak rounding/sanity check stuff a bit

Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-10-ville.syrjala@linux.intel.com

drm/i915: Compute clocks earlier

Do the DPLL computation before fastset checks. This should
allow us to get rid of all that horrible fuzzy clock handling
for fastsets. Who knows how many bugs there are caused by our
state not actually matching what the hardware will generate.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-9-ville.syrjala@linux.intel.com

drm/i915: Feed the DPLL output freq back into crtc_state

Fill port_clock and hw.adjusted_mode.crtc_clock with the actual
frequency we're going to be getting from the hardware. This will
let us accurately compute all derived state that depends on those.

v2: Reintroduce iCLKIP WARN
v3: Try to deal with VLV/BXT DSI PLL as well

Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-8-ville.syrjala@linux.intel.com

drm/i915: Reassign DPLLs only for crtcs going throug .compute_config()

Only reassign the pipe's DPLL if it's going through a full
.compute_config() cycle. If OTOH it's just getting modeset
eg. in order to change cdclk there doesn't seem much point in
picking a new DPLL for it.

This should also prevent .get_dplls() from seeing a funky port_clock
for DP even in cases where the readout produces a non-standard
clock and we (for some reason) have decided to not fully recompute
the state to remedy the situation.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-7-ville.syrjala@linux.intel.com

drm/i915: Do .crtc_compute_clock() earlier

Currently we calculate a lot of things (pixel rate, watermarks,
cdclk) trusting that the DPLL can generate the exact frequency
we ask it. In practice that is not true and there can be
certain amount of rounding involved.

To allow us to eventually get accurate numbers for all our
DPLL clock derived state we need to move the DPLL calculation
to hapen much earlier. To that end we hoist it up to the just
after the fastset checks. For now we just do the easy code
motion, and the actual back feeding of the final DPLL clock
into the state will come later.

A slight change here is that now .crtc_compute_clock()
can get called while the shared_dpll is still assigned.
But since .crtc_compute_clock() no longer assignes new
shared_dplls this is perfectly fine.

TODO: I'd actually like to do this before the fastset check
so that if the DPLL state should change we actually do the
modeset. Which I think is what the video aficionados want,
but it might not be what the fans of fastboot want. Not yet
sure how to reconcile those conflicting requirements...

v2: s/return/goto/ in error handling

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-6-ville.syrjala@linux.intel.com

drm/ssd130x: Replace simple display helpers with the atomic helpers

The simple display pipeline is a set of helpers that can be used by DRM
drivers to avoid dealing with all the needed components and just define
a few functions to operate a simple display device with one full-screen
scanout buffer feeding a single output.

But it is arguable that this provides the correct level of abstraction
for simple drivers, and recently some have been ported from using these
simple display helpers to use the regular atomic helpers instead.

The rationale for this is that the simple display pipeline helpers don't
hide that much of the DRM complexity, while adding an indirection layer
that conflates the concepts of CRTCs and planes. This makes the helpers
less flexible and harder to be reused among different graphics drivers.

Also, for simple drivers, using the full atomic helpers doesn't require
a lot of additional code. So adding a simple display pipeline layer may
not be worth it.

For these reasons, let's follow that trend and make ssd130x a plain DRM
driver that creates its own primary plane, CRTC, enconder and connector.

Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905222759.2597186-1-javierm@redhat.com

drm/i915/vdsc: Set VDSC PIC_HEIGHT before using for DP DSC

Currently, pic_height of vdsc_cfg structure is being used to calculate
slice_height, before it is set for DP.

So taking out the lines to set pic_height from the helper
intel_dp_dsc_compute_params() to individual encoders, and setting
pic_height, before it is used to calculate slice_height for DP.

Fixes: 5a6d866f8e1b ("drm/i915: Get slice height before computing rc params")
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902103219.1168781-1-ankit.k.nautiyal@intel.com

drm/i915/dsi: Extract {vlv,bxt}_get_pclk()

Extract the state->freq computation for VLV/BXT DSI PLL
into small helpers. We want to use these during the state
computation as well.

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-5-ville.syrjala@linux.intel.com

drm/i915: Extract HAS_DOUBLE_BUFFERED_M_N()

We have a couple of places that want to make distinction between
double buffered M/N registers vs. the split M1/N1+M2/N2 registers.
Add a helper for that.

v2: Turn into a HAS_ macro (Jani)

Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-4-ville.syrjala@linux.intel.com

drm/i915: Shuffle some PLL code around

Shuffle some PLL functions around a bit to avoid ugle
forward declarations later on. No functional changes.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-3-ville.syrjala@linux.intel.com

drm/i915: Relocate intel_crtc_dotclock()

intel_crtc_dotclock() is a bit misplaced. In lieu of a better
place let's just move it next to its friends in intel_display.c.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-2-ville.syrjala@linux.intel.com

drm/gma500: fix repeated words in comments

Delete the redundant word 'for'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907113927.35305-1-yuanjilin@cdjrlc.com

drm/qxl: fix the suspend/resume issue on qxl device

Details:
Currently, when trying to suspend and resume with qxl device，
there are some error messages after resuming,
eventually caused to black screen and can't be recovered.

The first error message:
[   64.668577][    C3] [drm] driver is in bug mode

This error is due to guest qxl driver
will call qxl_reinit_memslots(qdev) during system resume,
but didn't call qxl_io_reset(qdev) before this,
Then will cause the QXL_IO_MEMSLOT_ADD operation to fail on QEMU,
qxl->guest_bug flag will be set，As a result,
the QXL device can't communicate with guest qxl driver through the IO port.

after fix the first error,can success to resume and login to desktop,
but shortly after that will observe the second error message :
[  353.095343][  T863] qxl 0000:00:02.0: object_init failed for (262144, 0x00000001)
[  353.096660][  T863] [drm:qxl_gem_object_create [qxl]] *ERROR* Failed to allocate GEM object (260852, 1, 4096, -12)
[  353.097277][  T863] [drm:qxl_alloc_ioctl [qxl]] *ERROR* qxl_alloc_ioctl: failed to create gem ret=-12
[  368.197538][  T863] qxl 0000:00:02.0: object_init failed for (3149824, 0x00000001)
[  368.197541][  T863] [drm:qxl_alloc_bo_reserved [qxl]] *ERROR* failed to allocate VRAM BO

The problem is caused by calling qxl_ring_init_hdr(qdev->release_ring)
in qxl_drm_resume() function.
When do QXL_IO_RESET,QEMU will call init_qxl_ram(),
so params like prod,cons,notify_on_cons and notify_on_prod
will be set to default value.
Ring push/pop actions for release_ring can be performed normally.
But call qxl_ring_init_hdr(qdev->release_ring)
will eventually set notify_on_prod to number of QXL_RELEASE_RING_SIZE,
affect the value of notify in qxl_push_free_res() function always be false,
QEMU will no longer send events of QXL_INTERRUPT_DISPLAY to the
guest qxl driver，so qxl_ring_pop() will never been called anymore，
and can't do dma_fence_signal(),result to ttm_bo_wait_ctx(bo, ctx)
always return EBUSY,fail to call qxl_bo_create().

Test scenario:
1) start virtual machine with qemu command "-device qxl-vga"
2) click suspend botton to enter suspend mode
3) resume and observe the error message in kernel logs,screen will be black

Let's fix this by reset io and remove the qxl_ring_init_hdr calling.

Signed-off-by: Zongmin Zhou<zhouzongmin@kylinos.cn>
Suggested-by: Ming Xie<xieming@kylinos.cn>
Link: http://patchwork.freedesktop.org/patch/msgid/20220907094423.93581-1-min_halo@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm/bochs: fix blanking

VGA_IS1_RC is the color mode register (VGA_IS1_RM the one for monochrome
mode, note C vs. M at the end).  So when using VGA_IS1_RC make sure the
vga device is actually in color mode and set the corresponding bit in the
misc register.

Reproducible when booting VMs in UEFI mode with some edk2 versions (edk2
fix is on the way too).  Doesn't happen in BIOS mode because in that
case the vgabios already flips the bit.

Fixes: 250e743915d4 ("drm/bochs: Add screen blanking support")
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20220906142957.2763577-1-kraxel@redhat.com

drm/virtio: set fb_modifiers_not_supported

Without this, the drm core advertises LINEAR modifier which is
incorrect.

Also userspace virgl does not support modifiers.  For example, it causes
chrome on ozone/drm to fail with "Failed to create scanout buffer".

Fixes: 2af104290da5 ("drm: introduce fb_modifiers_not_supported flag in mode_config")
Suggested-by: Shao-Chuan Lee <shaochuan@chromium.org>
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220831190601.1295129-1-olvaffe@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

drm/sun4i: tv: Add missing reset assertion

The reset line is deasserted at bind, and asserted if we ever encounter an
error there. However, it's never asserted in unbind which will lead to a
resource unbalance.

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-40-459522d653a7@cerno.tech

drm/sun4i: tv: Rename error label

The other error labels in sun4i_tv_bind() are named after the task they
perform (err_disable_clk to call clk_disable_unprepare for example).

However, the err_cleanup_connector is named after the calling site
(drm_connector_init failing) and will actually cleanup the encoder. Let's
rename it to err_cleanup_encoder to be consistent.

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-39-459522d653a7@cerno.tech

drm/sun4i: tv: Remove useless destroy function

Our destroy implementation is just calling the generic helper, so let's
just remove our function and directly use the helper.

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-38-459522d653a7@cerno.tech

drm/sun4i: tv: Remove useless function

The drm_connector_to_sun4i_tv() function isn't used anywhere in the driver,
so let's remove it.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-37-459522d653a7@cerno.tech

drm/sun4i: tv: Convert to atomic hooks

The sun4i TV driver still uses legacy enable and disable hook
implementation. Let's convert to the atomic variants.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-35-459522d653a7@cerno.tech

drm/sun4i: tv: Remove unused mode_valid

The mode_valid implementation is pretty much a nop, let's remove it.

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-34-459522d653a7@cerno.tech

drm/vc4: vec: Fix timings for VEC modes

This commit fixes vertical timings of the VEC (composite output) modes
to accurately represent the 525-line ("NTSC") and 625-line ("PAL") ITU-R
standards.

Previous timings were actually defined as 502 and 601 lines, resulting
in non-standard 62.69 Hz and 52 Hz signals being generated,
respectively.

Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-28-459522d653a7@cerno.tech

drm/vc4: vec: Remove redundant atomic_mode_set

Let's remove the superfluous tv_mode field, which was redundant with the
mode field in struct drm_tv_connector_state.

Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-27-459522d653a7@cerno.tech

drm/vc4: vec: Refactor VEC TV mode setting

Change the mode_set function pointer logic to declarative config0,
config1 and custom_freq fields, to make TV mode setting logic more
concise and uniform.

Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
[Maxime: Fixed != 0 check, added tv_mode variable]
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-26-459522d653a7@cerno.tech

drm/vc4: vec: Convert to atomic helpers

The VC4 VEC driver still uses legacy enable and disable hook
implementation. Let's convert to the atomic variants.

Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-25-459522d653a7@cerno.tech

drm/vc4: vec: Remove empty mode_fixup

The mode_fixup hooks are deprecated, and the behaviour we implement is the
default one anyway. Let's remove it.

Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-24-459522d653a7@cerno.tech

drm/ttm: Remove unnecessary '0' values from ret

The variable ret is assigned in the judgment branch statement, he does
not need to initialize the assignment.

Signed-off-by: Li zeming <zeming@nfschina.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907032934.4490-1-zeming@nfschina.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

drm/via: Add new condition to via_dma_cleanup()

Pointer dev_priv->mmio, which was checked for NULL at via_do_init_map(),
is passed to via_do_cleanup_map() and is dereferenced there without check.

The patch adds the condition in via_dma_cleanup() which prevents potential NULL
pointer dereference.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 22f579c621e2 ("drm: Add via unichrome support")
Signed-off-by: Alisa Khabibrakhmanova <khabibrakhmanova@ispras.ru>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220729090643.240778-1-khabibrakhmanova@ispras.ru

drm/panel-edp: Fix typo in kerneldoc comment (appers=>appears)

Ever since I got the spell-check working in my editor this one has
been bugging me. Fix it.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220720162314.1.Ieef5bc3848df40b71605b70bb571d6429e8978de@changeid

drm/scheduler: quieten kernel-doc warnings

Fix kernel-doc warnings in gpu_scheduler.h and sched_main.c.

Quashes these warnings:

include/drm/gpu_scheduler.h:332: warning: missing initial short description on line:
 * struct drm_sched_backend_ops
include/drm/gpu_scheduler.h:412: warning: missing initial short description on line:
 * struct drm_gpu_scheduler
include/drm/gpu_scheduler.h:461: warning: Function parameter or member 'dev' not described in 'drm_gpu_scheduler'

drivers/gpu/drm/scheduler/sched_main.c:201: warning: missing initial short description on line:
 * drm_sched_dependency_optimized
drivers/gpu/drm/scheduler/sched_main.c:995: warning: Function parameter or member 'dev' not described in 'drm_sched_init'

Fixes: 2d33948e4e00 ("drm/scheduler: add documentation")
Fixes: 8ab62eda177b ("drm/sched: Add device pointer to drm_gpu_scheduler")
Fixes: 542cff7893a3 ("drm/sched: Avoid lockdep spalt on killing a processes")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Jiawei Gu <Jiawei.Gu@amd.com>
Cc: dri-devel@lists.freedesktop.org
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220404213040.12912-1-rdunlap@infradead.org

Revert "drm: Add missing DP DSC extended capability definitions."

This reverts commit 797e2c3f2762c356aadcdb53dd6bb8b8d966f7b5.

Part of a series where patches were modified while applying to resolve
conflicts, leading to further conflicts between drm-misc-next and
drm-intel-next, resulting in build failures in drm-tip. To be applied
again on a baseline with drm-misc-next and drm-intel-next in sync.

Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Revert "drm/i915: Fix intel_dp_mst_compute_link_config"

This reverts commit c6266862de1665b8c8006f58612db2dea66a29f6.

Part of a series where patches were modified while applying to resolve
conflicts, leading to further conflicts between drm-misc-next and
drm-intel-next, resulting in build failures in drm-tip. To be applied
again on a baseline with drm-misc-next and drm-intel-next in sync.

Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Revert "drm/i915: Extract drm_dp_atomic_find_vcpi_slots cycle to separate function"

This reverts commit 7ae5ab441402b8165de4658ba9398d8378f7dd1e.

Part of a series where patches were modified while applying to resolve
conflicts, leading to further conflicts between drm-misc-next and
drm-intel-next, resulting in build failures in drm-tip. To be applied
again on a baseline with drm-misc-next and drm-intel-next in sync.

Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Revert "drm/i915: Add DSC support to MST path"

This reverts commit e1a84ba850128b3984973786829e610ae4ee0e2e.

Part of a series where patches were modified while applying to resolve
conflicts, leading to further conflicts between drm-misc-next and
drm-intel-next, resulting in build failures in drm-tip. To be applied
again on a baseline with drm-misc-next and drm-intel-next in sync.

Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drm/i915: split out i915_gem.c declarations to i915_gem.h

Declutter i915_drv.h by splitting out the declarations for
i915_gem.[ch].

Add a fixme comment about the rest of the stuff in i915_gem.h that
doesn't really belong there.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/82a353c5c4b52df2354f9413b547c7619a45d92d.1662390010.git.jani.nikula@intel.com

drm/i915: un-inline i915_gem_drain_freed_objects()

I can't idenfity a single hot path that would require
i915_gem_drain_freed_objects() to be inline. Un-inline it.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6c289c55afee0d9a3067122db63277b8d60cf74f.1662390010.git.jani.nikula@intel.com

drm/i915: un-inline i915_gem_drain_workqueue()

i915_gem_drain_workqueue() is not used on any hot paths. Un-unline it.

Replace the do-while with a for loop while at it.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2c89e7e0a3528caf7ba9ffa29b2bb9f13f2357d1.1662390010.git.jani.nikula@intel.com

drm/i915: remove unused i915_gem_set_global_seqno() declaration

The function was removed four years ago in commit 6faf5916e6be
("drm/i915: Remove HW semaphores for gen7 inter-engine
synchronisation"). Finish the job.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0f88380416c1bd457af58bb31aeb297749a6fb9e.1662390010.git.jani.nikula@intel.com

drm/i915: remove unused macro I915_GTT_OFFSET_NONE

Apparently the last user of the macro was removed in commit 9c4ce97d8025
("drm/i915/display: Be explicit in handling the preallocated vma").

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b28b183457cf8871b1b070cbbbc3473bd5288210.1662390010.git.jani.nikula@intel.com

drm/bridge: anx7625: Set HPD irq detect window to 2ms

Some panels trigger HPD irq due to noise, the HPD debounce
may be 1.8ms, exceeding the default irq detect window, ~1.4ms.
This patch set HPD irq detection window to 2ms to
tolerate the HPD noise.

Signed-off-by: Xin Ji <xji@analogixsemi.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220903130833.541463-1-xji@analogixsemi.com

Merge tag 'drm-misc-next-2022-08-20-1' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v6.1:

UAPI Changes:

Cross-subsystem Changes:
- DMA-buf: documentation updates.
- Assorted small fixes to vga16fb
- Fix fbdev drivers to use the aperture helpers.
- Make removal of conflicting drivers work correctly without fbdev enabled.

Core Changes:
- bridge, scheduler, dp-mst: Assorted small fixes.
- Add more format helpers to fourcc, and use it to replace the cpp usage.
- Add DRM_FORMAT_Cxx, DRM_FORMAT_Rxx (single channel), and DRM_FORMAT_Dxx
  ("darkness", inverted single channel)
- Add packed AYUV8888 and XYUV8888 formats.
- Assorted documentation updates.
- Rename ttm_bo_init to ttm_bo_init_validate.
- Allow TTM bo's to exist without backing store.
- Convert drm selftests to kunit.
- Add managed init functions for (panel) bridge, crtc, encoder and connector.
- Fix endianness handling in various format conversion helpers.
- Make tests pass on big-endian platforms, and add test for rgb888 -> rgb565
- Move DRM_PLANE_HELPER_NO_SCALING to atomic helpers and rename, so
  drm_plane_helper is no longer needed in most drivers.
- Use idr_init_base instead of idr_init.
- Rename FB and GEM CMA helpers to DMA helpers.
- Rework XRGB8888 related conversion helpers, and add drm_fb_blit() that
  takes a iosys_map. Make drm_fb_memcpy take an iosys_map too.
- Move edid luminance calculation to core, and use it in i915.

Driver Changes:
- bridge/{adv7511,ti-sn65dsi86,parade-ps8640}, panel/{simple,nt35510,tc358767},
  nouveau, sun4i, mipi-dsi, mgag200, bochs, arm, komeda, vmwgfx, pl111:
  Assorted small fixes and doc updates.
- vc4: Rework hdmi power up, and depend on PM.
- panel/simple: Add Samsung LTL101AL01.
- ingenic: Add JZ4760(B) support, avoid a modeset when sharpness property
  is unchanged, and use the new PM ops.
- Revert some amdgpu commits that cause garbaged graphics when starting
  X, and reapply them with the real problem fixed.
- Completely rework vc4 init to use managed helpers.
- Rename via_drv to via_dri1, and move all stuff there only used by the
  dri1 implementation in preperation for atomic modeset.
- Use regmap bulk write in ssd130x.
- Power sequence and clock updates to it6505.
- Split panel-sitrox-st7701  init sequence and rework mode programming code.
- virtio: Improve error and edge conditions handling, and convert to use managed
  helpers.
- Add Samsung LTL101AL01, B120XAN01.0, R140NWF5 RH, DMT028VGHMCMI-1A T, panels.
- Add generic fbdev support to komeda.
- Split mgag200 modeset handling to make it more model-specific.
- Convert simpledrm to use atomic helpers.
- Improve udl suspend/disconnect handling.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f0c71766-61e8-19b7-763a-5fbcdefc633d@linux.intel.com

drm/i915: Add DSC support to MST path

Whenever we are not able to get enough timeslots
for required PBN, let's try to allocate those
using DSC, just same way as we do for SST.

v2: Removed intel_dp_mst_dsc_compute_config and refactored
    intel_dp_dsc_compute_config to support timeslots as a
    parameter(Ville Syrjälä)

v3: - Rebased
    - Added a debug to see that we at least try reserving
      VCPI slots using DSC, because currently its not visible
      from the logs, thus making debugging more tricky.
    - Moved timeslots to numerator, where it should be.

v4: - Call drm_dp_mst_atomic_check already during link
      config computation, because we need to know already
      by this moment if uncompressed amount of VCPI slots
      needed can fit, otherwise we need to use DSC.
      (thanks to Vinod Govindapillai for pointing this out)

v5: - Put pipe_config->bigjoiner_pipes back to original
      condition in intel_dp_dsc_compute_config
      (don't remember when I lost it)

v6: - Removed unnecessary drm_dp_mst_atomic_check as it is
      now always called in a newly introduced
      intel_dp_mst_find_vcpi_slots_for_bpp function
      (Vinod Govindapillai)

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905085744.29637-5-stanislav.lisovskiy@intel.com

drm/i915: Extract drm_dp_atomic_find_vcpi_slots cycle to separate function

We would be using almost same code to loop through bpps while calling
drm_dp_atomic_find_vcpi_slots - lets remove this duplication by
introducing a new function intel_dp_mst_find_vcpi_slots_for_bpp

v2: Fix pbn_div calculation - shouldn't matter if its DSC or not.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905085744.29637-4-stanislav.lisovskiy@intel.com

drm/i915: Fix intel_dp_mst_compute_link_config

We currently always exit that bpp loop because
drm_dp_atomic_find_vcpi_slots doesn't care if we actually
can fit those or not.
I think that wasn't the initial intention here, especially when
we keep trying with lower bpps, we are supposed to keep trying
until we actually find some _working_ configuration, which isn't the
case here.
So added that drm_dp_mst_check here, so that we can make sure
that try all the bpps before we fail.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905085744.29637-3-stanislav.lisovskiy@intel.com

drm: Add missing DP DSC extended capability definitions.

Adding DP DSC register definitions, we might need for further
DSC implementation, supporting MST and DP branch pass-through mode.

v2: - Fixed checkpatch comment warning
v3: - Removed function which is not yet used(Jani Nikula)

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905085744.29637-2-stanislav.lisovskiy@intel.com

drm: vkms: Add support to the RGB565 format

This commit also adds new helper macros to deal with fixed-point
arithmetic.

It was done to improve the precision of the conversion to ARGB16161616
since the "conversion ratio" is not an integer.

V3: Adapt the handlers to the new format introduced in patch 7 V3.
V5: Minor improvements
V6: Minor improvements (Pekka Paalanen)

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-10-igormtorrente@gmail.com

drm: vkms: Adds XRGB_16161616 and ARGB_1616161616 formats

This will be useful to write tests that depends on these formats.

ARGB and XRGB follows the a similar implementation of the former formats.
Just adjusting for 16 bits per channel.

V3: Adapt the handlers to the new format introduced in patch 7 V3.
V5: Minor improvements
    Added le16_to_cpu/cpu_to_le16 to the 16 bits color read/writes.

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-9-igormtorrente@gmail.com

drm: vkms: Supports to the case where primary plane doesn't match the CRTC

We will remove the current assumption that the primary plane has the
same size and position as CRTC and that the primary plane is the
bottom-most in zpos order, or is even enabled. At least as far
as the blending machinery is concerned.

For that we will add CRTC dimension information to `vkms_crtc_state`
and add a opaque black backgound color.

Because now we need to fill the background, we had a loss in
performance with this change. Results running the IGT[1] test
`igt@kms_cursor_crc@pipe-a-cursor-512x512-onscreen` ten times:

|                  Frametime                   |
|:--------------------------------------------:|
|  Implementation |  Previous |   This commit  |
|:---------------:|:---------:|:--------------:|
| frametime range |  5~18 ms  |     10~22 ms   |
|     Average     |  8.47 ms  |     12.32 ms   |

[1] IGT commit id: bc3f6833a12221a46659535dac06ebb312490eb4

V6: Improve the commit description (Pekka Paalanen).
    Update some comments (Pekka Paalanen).
    Remove some fields from `vkms_crtc_state` and move where
    some variables are set (Pekka Paalanen).

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-8-igormtorrente@gmail.com

drm: vkms: Refactor the plane composer to accept new formats

Currently the blend function only accepts XRGB_8888 and ARGB_8888
as a color input.

This patch refactors all the functions related to the plane composition
to overcome this limitation.

The pixels blend is done using the new internal format. And new handlers
are being added to convert a specific format to/from this internal format.

So the blend operation depends on these handlers to convert to this common
format. The blended result, if necessary, is converted to the writeback
buffer format.

This patch introduces three major differences to the blend function.
1 - All the planes are blended at once.
2 - The blend calculus is done as per line instead of per pixel.
3 - It is responsible to calculates the CRC and writing the writeback
buffer(if necessary).

These changes allow us to allocate way less memory in the intermediate
buffer to compute these operations. Because now we don't need to
have the entire intermediate image lines at once, just one line is
enough.

| Memory consumption (output dimensions) |
|:--------------------------------------:|
|       Current      |     This patch    |
|:------------------:|:-----------------:|
|   Width * Heigth   |     2 * Width     |

Beyond memory, we also have a minor performance benefit from all
these changes. Results running the IGT[1] test
`igt@kms_cursor_crc@pipe-a-cursor-512x512-onscreen` ten times:

|                 Frametime                  |
|:------------------------------------------:|
|  Implementation |  Current  |  This commit |
|:---------------:|:---------:|:------------:|
| frametime range |  9~22 ms  |    5~17 ms   |
|     Average     |  11.4 ms  |    7.8 ms    |

[1] IGT commit id: bc3f6833a12221a46659535dac06ebb312490eb4

V2: Improves the performance drastically, by performing the operations
    per-line and not per-pixel(Pekka Paalanen).
    Minor improvements(Pekka Paalanen).
V3: Changes the code to blend the planes all at once. This improves
    performance, memory consumption, and removes much of the weirdness
    of the V2(Pekka Paalanen and me).
    Minor improvements(Pekka Paalanen and me).
V4: Rebase the code and adapt it to the new NUM_OVERLAY_PLANES constant.
V5: Minor checkpatch fixes and the removal of TO-DO item(Melissa Wen).
    Several security/robustness improvents(Pekka Paalanen).
    Removes check_planes_x_bounds function and allows partial
    partly off-screen(Pekka Paalanen).
V6: Fix a mismatch of some variable sizes (Pekka Paalanen).
    Several minor improvements (Pekka Paalanen).

Reviewed-by: Melissa Wen <mwen@igalia.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-7-igormtorrente@gmail.com

drm: vkms: Add fb information to `vkms_writeback_job`

This commit is the groundwork to introduce new formats to the planes and
writeback buffer. As part of it, a new buffer metadata field is added to
`vkms_writeback_job`, this metadata is represented by the `vkms_frame_info`
struct.

Also adds two new function pointers (`line_to_frame_func` and
`frame_to_line_func`) are defined to handle format conversion
from/to internal format.

A new internal format(`struct pixel_argb_u16`) is introduced to deal with
all possible inputs. It consists of 16 bits fields that represent each of
the channels.

These things will allow us, in the future, to have different compositing
and wb format types.

V2: Change the code to get the drm_framebuffer reference and not copy its
    contents (Thomas Zimmermann).
V3: Drop the refcount in the wb code (Thomas Zimmermann).
V5: Add {wb,plane}_format_transform_func to vkms_writeback_job
    and vkms_plane_state (Pekka Paalanen)
V6: Improvements to some struct/struct members names (Pekka Paalanen).
    Splits this patch in two (Pekka Paalanen).
V7: Replace line_to_frame_func and frame_to_line_func typedefs
   with the function signature and void* (Melissa Wen).

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-6-igormtorrente@gmail.com

drm: vkms: get the reference to `drm_framebuffer` instead if coping it

Instead of coping `drm_framebuffer` - which can cause problems -
we just get the reference and add the ref count.

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-5-igormtorrente@gmail.com

drm: drm_atomic_helper: Add a new helper to deal with the writeback connector validation

Add a helper function to validate the connector configuration received in
the encoder atomic_check by the drivers.

So the drivers don't need to do these common validations themselves.

V2: Move the format verification to a new helper at the drm_atomic_helper.c
    (Thomas Zimmermann).
V3: Format check improvements (Leandro Ribeiro).
    Minor improvements(Thomas Zimmermann).
V5: Fix some grammar issues in the commit message (André Almeida).

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-4-igormtorrente@gmail.com

drm: vkms: Rename `vkms_composer` to `vkms_frame_info`

Changes the name of this struct to a more meaningful name.
A name that represents better what this struct is about.

Composer is the code that do the compositing of the planes.
This struct contains information on the frame used in the output
composition. Thus, vkms_frame_info is a better name to represent
this.

V5: Fix a commit message typo(Melissa Wen).
V6: Fix wrong iosys_map_is_null verification at compose_plane
    (Melissa Wen).

Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-3-igormtorrente@gmail.com

drm: vkms: Replace hardcoded value of `vkms_composer.map` to DRM_FORMAT_MAX_PLANES

The `map` vector at `vkms_composer` uses a hardcoded value to define its
size.

If someday the maximum number of planes increases, this hardcoded value
can be a problem.

This value is being replaced with the DRM_FORMAT_MAX_PLANES macro.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Igor Torrente <igormtorrente@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-2-igormtorrente@gmail.com

drm/i915/fbdev: do not create fbdev if HPD is suspended

In case of deferred FB setup core can try to create new
framebuffer. Disallow it if hpd_suspended flag is set.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220826141929.189681-4-andrzej.hajda@intel.com

drm/i915/fbdev: suspend HPD before fbdev unregistration

HPD event after fbdev unregistration can cause registration of deferred
fbdev which will not be unregistered later, causing use-after-free.
To avoid it HPD handling should be suspended before fbdev unregistration.

It should fix following GPF:
[272.634530] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP NOPTI
[272.634536] CPU: 0 PID: 6030 Comm: i915_selftest Tainted: G     U            5.18.0-rc5-CI_DRM_11603-g12dccf4f5eef+ #1
[272.634541] Hardware name: Intel Corporation Raptor Lake Client Platform/RPL-S ADP-S DDR5 UDIMM CRB, BIOS RPLSFWI1.R00.2397.A01.2109300731 09/30/2021
[272.634545] RIP: 0010:fb_do_apertures_overlap.part.14+0x26/0x60
...
[272.634582] Call Trace:
[272.634583]  <TASK>
[272.634585]  do_remove_conflicting_framebuffers+0x59/0xa0
[272.634589]  remove_conflicting_framebuffers+0x2d/0xc0
[272.634592]  remove_conflicting_pci_framebuffers+0xc8/0x110
[272.634595]  drm_aperture_remove_conflicting_pci_framebuffers+0x52/0x70
[272.634604]  i915_driver_probe+0x63a/0xdd0 [i915]

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5329
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5510
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220826141929.189681-3-andrzej.hajda@intel.com