Mediatek DRM Next for Linux 6.2

1. Fixup of dpi and hdmi
2. Move panel connector to head
3. Add MT8188 dpi support
4. Add MT8195 AFBC support

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221123234855.2485-1-chunkuang.hu@kernel.org

MT8195 ovl driver is similar to MT8183 ovl driver but support
AFBC buffer format.

Signed-off-by: Justin Green <greenjustin@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20221116193335.36320-1-greenjustin@google.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Tested on MT8195 and confirmed both correct video output and improved DRAM
bandwidth performance.

Signed-off-by: Justin Green <greenjustin@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20221116193335.36320-1-greenjustin@google.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

For MT8188, the vdosys0 only supports 1T1P mode, so we need to
add the compatible for mt8188 edp-intf.

Signed-off-by: xinlei lee <xinlei.lee@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/1666266353-16670-3-git-send-email-xinlei.lee@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:

  drivers/gpu/drm/mediatek/mtk_hdmi.c:1407:16: error: incompatible function pointer types initializing 'enum drm_mode_status (*)(struct drm_bridge *, const struct drm_display_info *, const struct drm_display_mode *)' with an expression of type 'int (struct drm_bridge *, const struct drm_display_info *, const struct drm_display_mode *)' [-Werror,-Wincompatible-function-pointer-types-strict]
          .mode_valid = mtk_hdmi_bridge_mode_valid,
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~
  1 error generated.

->mode_valid() in 'struct drm_bridge_funcs' expects a return type of
'enum drm_mode_status', not 'int'. Adjust the return type of
mtk_hdmi_bridge_mode_valid() to match the prototype's to resolve the
warning and CFI failure.

Link: https://github.com/ClangBuiltLinux/linux/issues/1750
Reported-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

[Why]
Some userspaces assume that the first connected connector is the "main"
display, which supposed to display, for example, the login screen.
For laptops, this should be the internal connector.

[How]
This patch calls drm_helper_move_panel_connectors_to_head() right before
crtc creation to ensure internal connectors are at the top of the
connector list.

Tested by ensuring the internal panels are at the top of the connector
list via modetest -c.

This patch does to mediatek what the following patch
https://www.spinics.net/lists/stable/msg590605.html
did for qualcomm.

Signed-off-by: Gil Dekel <gildekel@chromium.org>
Tested-by: Gil Dekel <gildekel@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Modify dpi power on/off sequence so that the first gpio operation will
take effect.

Fixes: 6bd4763fd532 ("drm/mediatek: set dpi pin mode to gpio low to avoid leakage current")
Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Initialize on-stack modes with drm_mode_init() to guarantee
no stack garbage in the list head.

Based on the following cocci script, with manual fixups:
@decl@
identifier M;
expression E;
@@
- struct drm_display_mode M = E;
+ struct drm_display_mode M;

@@
identifier decl.M;
expression decl.E;
statement S, S1;
@@
struct drm_display_mode M;
... when != S
+ drm_mode_init(&M, &E);
+
S1

@@
expression decl.E;
@@
- &*E
+ E

Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221107192545.9896-6-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Move the generic fbdev implementation into its own source and header
file. Adapt drivers. No functional changes, but some of the internal
helpers have been renamed to fit into the drm_fbdev_ naming scheme.

v3:
	* rename drm_fbdev.{c,h} to drm_fbdev_generic.{c,h}
	* rebase onto vmwgfx changes
	* rebase onto xlnx changes
	* fix include statements in amdgpu

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-22-tzimmermann@suse.de

Pull drm updates from Dave Airlie:
 "Lots of stuff all over, some new AMD IP support and gang submit
  support. i915 has further DG2 and Meteorlake pieces, and a bunch of
  i915 display refactoring. msm has a shrinker rework. There are also a
  bunch of conversions to use kunit.

  This has two external pieces, some MEI changes needed for future Intel
  discrete GPUs. These should be acked by Greg. There is also a cross
  maintainer shared tree with some backlight rework from Hans in here.

  Core:
   - convert selftests to kunit
   - managed init for more objects
   - move to idr_init_base
   - rename fb and gem cma helpers to dma
   - hide unregistered connectors from getconnector ioctl
   - DSC passthrough aux support
   - backlight handling improvements
   - add dma_resv_assert_held to vmap/vunmap

  edid:
   - move luminance calculation to core

  fbdev:
   - fix aperture helper usage

  fourcc:
   - add more format helpers
   - add DRM_FORMAT_Cxx, DRM_FORMAT_Rxx, DRM_FORMAT_Dxx
   - add packed AYUV8888, XYUV8888
   - add some kunit tests

  ttm:
   - allow bos without backing store
   - rewrite placement to use intersect/compatible functions

  dma-buf:
   - docs update
   - improve signalling when debugging

  udmabuf:
   - fix failure path GPF

  dp:
   - drop dp/mst legacy code
   - atomic mst state support
   - audio infoframe packing

  panel:
   - Samsung LTL101AL01
   - B120XAN01.0
   - R140NWF5 RH
   - DMT028VGHMCMI-1A T
   - AUO B133UAN02.1
   - IVO M133NW4J-R3
   - Innolux N120ACA-EA1

  amdgpu:
   - Gang submit support
   - Mode2 reset for RDNA2
   - New IP support:
        DCN 3.1.4, 3.2
        SMU 13.x
        NBIO 7.7
        GC 11.x
        PSP 13.x
        SDMA 6.x
        GMC 11.x
   - DSC passthrough support
   - PSP fixes for TA support
   - vangogh GFXOFF stats
   - clang fixes
   - gang submit CS cleanup prep work
   - fix VRAM eviction issues

  amdkfd:
   - GC 10.3 IP ISA fixes
   - fix CRIU regression
   - CPU fault on COW mapping fixes

  i915:
   - align fw versioning with kernel practices
   - add display substruct to i915 private
   - add initial runtime info to driver info
   - split out HDCP and backlight registers
   - MEI XeHP SDV GSC support
   - add per-gt sysfs defaults
   - TLB invalidation improvements
   - Disable PCI BAR resize on 32-bit
   - GuC firmware updates and compat changes
   - GuC log timestamp translation
   - DG2 preemption workaround changes
   - DG2 improved HDMI pixel clocks support
   - PCI BAR sanity checks
   - Enable DC5 on DG2
   - DG2 DMC fw bumped
   - ADL-S PCI ID added
   - Meteorlake enablement
   - Rename ggtt_view to gtt_view
   - host RPS fixes
   - release mmaps on rpm suspend on discrete
   - clocking and dpll refactoring
   - VBT definitions and parsing updates
   - SKL watermark code extracted to separate file
   - allow seamless M/N changes on eDP panels
   - BUG_ON removal and cleanups

  msm:
   - DPU:
       simplified VBIF configuration
       cleanup CTL interfaces
   - DSI:
       removed unused msm_display_dsc_config struct
       switch regulator calls to new API
       switched to PANEL_BRIDGE for direct attached panels
   - DSI_PHY: convert drivers to parent_hws
   - DP: cleanup pixel_rate handling
   - HDMI: turned hdmi-phy-8996 into OF clk provider
   - misc dt-bindings fixes
   - choose eDP as primary display if it's available
   - support getting interconnects from either the mdss or the mdp5/dpu
     device nodes
   - gem: Shrinker + LRU re-work:
   - adds a shared GEM LRU+shrinker helper and moves msm over to that
   - reduce lock contention between retire and submit by avoiding the
     need to acquire obj lock in retire path (and instead using resv
     seeing obj's busyness in the shrinker
   - fix reclaim vs submit issues
   - GEM fault injection for triggering userspace error paths
   - Map/unmap optimization
   - Improved robustness for a6xx GPU recovery

  virtio:
   - improve error and edge conditions handling
   - convert to use managed helpers
   - stop exposing LINEAR modifier

  mgag200:
   - split modeset handling per model

  udl:
   - suspend/disconnect handling improvements

  vc4:
   - rework HDMI power up
   - depend on PM
   - better unplugging support

  ast:
   - resolution handling improvements

  ingenic:
   - add JZ4760(B) support
   - avoid a modeset when sharpness property is unchanged
   - use the new PM ops

  it6505:
   - power seq and clock updates

  ssd130x:
   - regmap bulk write
   - use atomic helpers instead of simple helpers

  via:
   - rename via_drv to via_dri1, consolidate all code.

  radeon:
   - drop DP MST experimental support
   - delayed work flush fix
   - use time_after

  ti-sn65dsi86:
   - DP support

  mediatek:
   - MT8195 DP support
   - drop of_gpio header
   - remove unneeded result
   - small DP code improvements

  vkms:
   - RGB565, XRGB64 and ARGB64 support

  sun4i:
   - tv: convert to atomic

  rcar-du:
   - Synopsys DW HDMI bridge DT bindings update

  exynos:
   - use drm_display_info.is_hdmi
   - correct return of mixer_mode_valid and hdmi_mode_valid

  omap:
   - refcounting fix

  rockchip:
   - RK3568 support
   - RK3399 gamma support"

* tag 'drm-next-2022-10-05' of git://anongit.freedesktop.org/drm/drm: (1374 commits)
  drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
  drm/amdkfd: Track unified memory when switching xnack mode
  drm/amdgpu: Enable sram on vcn_4_0_2
  drm/amdgpu: Enable VCN DPG for GC11_0_1
  drm/msm: Fix build break with recent mm tree
  drm/panel: simple: Use dev_err_probe() to simplify code
  drm/panel: panel-edp: Use dev_err_probe() to simplify code
  drm/panel: simple: Add Multi-Inno Technology MI0800FT-9
  dt-bindings: display: simple: Add Multi-Inno Technology MI0800FT-9 panel
  drm/amdgpu: correct the memcpy size for ip discovery firmware
  drm/amdgpu: Skip put_reset_domain if it doesn't exist
  drm/amdgpu: remove switch from amdgpu_gmc_noretry_set
  drm/amdgpu: Fix mc_umc_status used uninitialized warning
  drm/amd/display: Prevent OTG shutdown during PSR SU
  drm/amdgpu: add page retirement handling for CPU RAS
  drm/amdgpu: use RAS error address convert api in mca notifier
  drm/amdgpu: support to convert dedicated umc mca address
  drm/amdgpu: export umc error address convert interface
  drm/amdgpu: fix sdma v4 init microcode error
  drm/amd/display: fix array-bounds error in dc_stream_remove_writeback()
  ...