Fix no screen show on display after S3 on CML-R

[koba]

[Impact]
On CML-R, after S3, No screen show on all three connector(3*DP).

[Fix]
The patch is got from https://patchwork.freedesktop.org/patch/416162/.
For Legacy S3 suspend/resume GEN9 BC needs to enable and setup TGP PCH.

[Test Case]
1. Connected the monitor on one of 3*DP on CML-R.
2. Suspend&resume the machine.
3. Check the monitor can output something.

[Where problems could occur]
Just Enable the hpd detection in IRQ installer and during suspend&resume.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-5.10 - 5.10.0-1014.15

---------------
linux-oem-5.10 (5.10.0-1014.15) focal; urgency=medium

  * focal/linux-oem-5.10: 5.10.0-1014.15 -proposed tracker (LP: #1913154)

  * Fix no screen show on display after S3 on CML-R (LP: #1913682)
    - SAUCE: drm/i915/gen9bc: Handle TGP PCH during suspend/resume

  * RKL: backport a few fixes from v5.11 (LP: #1914412)
    - drm/i915/display/fbc: Implement WA 22010751166
    - drm/i915/rkl: Add new cdclk table
    - drm/i915: Rename FORCEWAKE_BLITTER to FORCEWAKE_GT
    - drm/i915: Update gen12 forcewake table
    - drm/i915: Update gen12 multicast register ranges

  * TGL system automatically resumes from s2idle when connecting to a docking
    station with a monitor (LP: #1902577)
    - SAUCE: ACPI: avoid auto-wakeup with an _OSI string

  * Thinkpad - add palm sensor support needed for WWAN (LP: #1912033)
    - platform/x86: thinkpad_acpi: Add palm sensor support
    - platform/x86: thinkpad_acpi: correct palmsensor error checking

  * Miscellaneous Ubuntu changes
    - [Config] updateconfigs following v5.10.11 import

  [ Ubuntu: 5.10.0-14.15 ]

  * hirsute/linux: 5.10.0-14.15 -proposed tracker (LP: #1913724)
  * Restore palm ejection on multi-input devices (LP: #1913520)
    - HID: multitouch: Apply MT_QUIRK_CONFIDENCE quirk for multi-input devices
  * intel-hid is not loaded on new Intel platform (LP: #1907160)
    - platform/x86: intel-hid: add Rocket Lake ACPI device ID
  * Hirsute update: v5.10.11 upstream stable release (LP: #1913430)
    - scsi: target: tcmu: Fix use-after-free of se_cmd->priv
    - mtd: rawnand: gpmi: fix dst bit offset when extracting raw payload
    - mtd: rawnand: nandsim: Fix the logic when selecting Hamming soft ECC engine
    - i2c: tegra: Wait for config load atomically while in ISR
    - i2c: bpmp-tegra: Ignore unknown I2C_M flags
    - platform/x86: ideapad-laptop: Disable touchpad_switch for ELAN0634
    - ALSA: seq: oss: Fix missing error check in snd_seq_oss_synth_make_info()
    - ALSA: hda/realtek - Limit int mic boost on Acer Aspire E5-575T
    - ALSA: hda/via: Add minimum mute flag
    - crypto: xor - Fix divide error in do_xor_speed()
    - dm crypt: fix copy and paste bug in crypt_alloc_req_aead
    - ACPI: scan: Make acpi_bus_get_device() clear return pointer on error
    - btrfs: don't get an EINTR during drop_snapshot for reloc
    - btrfs: do not double free backref nodes on error
    - btrfs: fix lockdep splat in btrfs_recover_relocation
    - btrfs: don't clear ret in btrfs_start_dirty_block_groups
    - btrfs: send: fix invalid clone operations when cloning from the same file
      and root
    - fs: fix lazytime expiration handling in __writeback_single_inode()
    - pinctrl: ingenic: Fix JZ4760 support
    - mmc: core: don't initialize block size from ext_csd if not present
    - mmc: sdhci-of-dwcmshc: fix rpmb access
    - mmc: sdhci-xenon: fix 1.8v regulator stabilization
    - mmc: sdhci-brcmstb: Fix mmc timeout errors on S5 suspend
    - dm: avoid filesystem lookup in dm_get_dev_t()
    - dm integrity: fix a crash if "recalculate" used without "internal_hash"
    - dm integrity: conditionally disable ...