MFC r338654, r338701

r338654:
[ig4] Add PCI IDs for I2C controller on Intel Kaby Lake systems

PR: 221777
Approved by: re (kib)
Submitted by: marc.priggemeyer@gmail.com

r338701:
[ig4] Fix device description for Kaby Lake systems

Kaby Lake I2C controller is Intel Sunrise Point-H not Intel Sunrise Point-LP.

Submitted by: Dmitry Luhtionov
Approved by: re (kib)

MFC r338111, r338215

r338111:
[ig4] add ACPI Device HID for AMD platforms

Added ACPI Device HID AMDI0010 for the designware I2C controllers in
future AMD platforms. Also, when verifying component version check for
minimal value instead of exact match.

PR: 230641
Submitted by: Rajesh <rajfbsd@gmail.com>
Reviewed by: cem, gonzo
Differential Revision: https://reviews.freebsd.org/D16670

r338215:
[ig4] Fix I/O timeout issue with Designware I2C controller on AMD platforms

Due to hardware limitation AMD I2C controller can't trigger pending
interrupt if interrupt status has been changed after clearing
interrupt status bits. So, I2C will lose the interrupt and IO will be
timed out. Implements a workaround to disable I2C controller interrupt
and re-enable I2C interrupt before existing interrupt handler.

Submitted by: rajfbsd@gmail.com
Differential Revision: https://reviews.freebsd.org/D16720

MFC r336050-r336051, r336142, r336326, r337719

r336050:
ig4(4): add support for Apollo Lake I2C controllers

Add PCI ids for I2C controllers on Apollo Lake platform. Also convert
switch/case probe logic into a table.

Reviewed by: avg
Differential Revision: https://reviews.freebsd.org/D16120

r336051:
ig4(4): Fix Apollo lake entries platform identifier

Identify Apollo Lake controllers as IG4_APL and not as a IG4_SKYLAKE

Reported by: rpokala@

r336142:
ig4(4): add devmatch(8) PNP info

Now that we have all devices ids in a table add MODULE_PNP_INFO macro
to let devmatch autoload module

r336326:
Remove MODULE_PNP_INFO for ig4(4) driver

ig4(4) does not support suspend/resume but present on the hardware where
such functionality is critical, like laptops. Remove PNP info to avoid
breaking suspend/resume on the systems where ig4(4) load is not explicitly
requested by the user.

PR: 229791
Reported by: Ali Abdallah

r337719:
[ig4] Fix initialization sequence for newer ig4 chips

Newer chips may require assert/deassert after power down for proper
startup. Check respective flag in DEVIDLE_CTRL and perform operation
if neccesssary.

PR: 221777
Submitted by: marc.priggemeyer@gmail.com
Obtained from: DragonFly BSD
Tested on: Thinkpad T470

MFC r330558:

[ig4] Add support for i2c controllers on Skylake and Kaby Lake

This was tested by Ben on HP Chromebook 13 G1 with a
Skylake CPU and Sunrise Point-LP I2C controller and by me on
Minnowboard Turbot with Atom E3826 (formerly Bay Trail)

Submitted by: Ben Pye <ben@curlybracket.co.uk>
Reviewed by: gonzo
Obtained from: DragonflyBSD (a4549657 by Imre Vadász)
Differential Revision: https://reviews.freebsd.org/D13654

MFC: r310309, r310340-310341, r311664, r311793-r311794

o sdhci/mmc: Minor whitespace cleanups

o Add Braswell PCI IDs for Intel Cherryview

o mmc: Accept even lower voltage for Cherryview

And HP x2 210, per DragonFlyBSD 240bd9cd58f8259c12c14a8006837e698.

o In mmcsd_task(), bio_resid was not being set to 0 on a successful read
or write, resulting in random short-read and short-write returns for
requests. Fixing this fixes nominal block I/O via mmcsd(4).

Obtained from: DragonFlyBSD (fd4b97583be1a1e57234713c25f6e81bc0411cb0)

o Add support for Intel Apollo Lake and Bay Trail eMMC PCI controllers.

o Flesh out the support for Intel Braswell eMMC controllers further.

o In sdhci_init_slot(), use the right capability field for determining
the announced bus width based on MMC_CAP_*_BIT_DATA.

MFC r310621:

[ig4] Add ACPI platform support for ig4 driver

Add ACPI part for ig4 driver to make it work on Intel BayTrail SoC where
ig4 device is available only through ACPI

Reviewed by: avg
Differential Revision: https://reviews.freebsd.org/D8742

MFC r308221: fix typo in a comment

MFC r308219: ichiic/ig4: completely disengage from smbus

MFC r308104: add iic interface to ig4 driver, move isl and cyapa to iicbus

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Fix ig4 operation for certain machines

Some machine BIOSes use the I2C bus and leave it in a state that causes
interrupts to not work properly due to a pending interrupt having been
latched.

Refactor the code a bit to clear pending interrupts when I2C is enabled.
This fixes the primary problem.

Also fix a possible race condition in the interrupt handler where the
interrupt was being cleared after reading the status instead of before.

Reported by: pfg
Reviewed by: jhb
Approved by: jhb
Obtained from: DragonFly BSD
Differential Revision: https://reviews.freebsd.org/D6586

sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

Use DELAY() instead of sleeping during boot-time attach.

Tested by: Wolfgang Zenker <wolfgang@lyxys.ka.sub.org>

Allow building a kernel with baked in ig4, isl and cyapa drivers.

Also addresses jhb's remarks on D2811 and D3068.

PR: 202059
Differential Revision: https://reviews.freebsd.org/D3351
Reviewed by: jhb
Approved by: jhb

Protect smbus ioctls in ig4 driver using a shared lock.
Document locking semantics.

Differential Revision: https://reviews.freebsd.org/D2744
Reviewed by: jah, kib
Approved by: kib

ig4 - Intel fourth gen integrated I2C SMBus driver.

Differential Revision: https://reviews.freebsd.org/D2372
Reviewed by: jhb, wblock, adrian
Approved by: jhb, wblock
Relnotes: yes