Replace calls to bus_generic_attach with bus_attach_children

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47675

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

linuxkpi: Add `i2c_adapter_quirks` support

While here, also declare `I2C_CLASS_HWMON`.

Reviewed by: manu
Approved by: manu
Differential Revision: https://reviews.freebsd.org/D38535

linuxkpi: i2c: Fix 7bit/8bit addressing

Linux is using 7 bit addressing while FreeBSD uses 8 bit addresses
internally, but i2c(8) uses 7 bit address.
This confused me when originally doing the code

linuxkpi: i2c: Fix 7bit/8bit addressing

Linux is using 7 bit addressing while FreeBSD uses 8 bit addresses
internally, but i2c(8) uses 7 bit address.
This confused me when originally doing the code and I thought that
0x50 was the 8bit EDID address while it's the 7bit address and since
I did all my testing using this I didn't noticed the problem.

Reported by: avg
PR: 265920 (somewhat)

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linuxkpi: Acquire giant when adding/removing i2c adapters

We need Giant as we run in a taskqueue_thread via linux_work.
This fix detaching amdgpu and i915kms.

Reviewed by: bz, hselasky, imp
Sponsor

linuxkpi: Acquire giant when adding/removing i2c adapters

We need Giant as we run in a taskqueue_thread via linux_work.
This fix detaching amdgpu and i915kms.

Reviewed by: bz, hselasky, imp
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D35478

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linuxkpi: Rework detach function

We need to detach the matching i2c adapter so look for the right one.
While here add some locks to protect multiple add/del at the same time.

Fixes: 1961a14a47 ("li

linuxkpi: Rework detach function

We need to detach the matching i2c adapter so look for the right one.
While here add some locks to protect multiple add/del at the same time.

Fixes: 1961a14a47 ("linuxkpi: Add i2c support")
Sponsored by: Beckhoff Automation GmbH & Co. KG

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LinuxKPI: Allow lkpi_iic driver to be a child of drm device.

i915kms exposes "AUX #/port #" I2C adapters as drm children

MFC after: 1 week
Reviewed by: hselasky, manu
Differential Revision: https:/

LinuxKPI: Allow lkpi_iic driver to be a child of drm device.

i915kms exposes "AUX #/port #" I2C adapters as drm children

MFC after: 1 week
Reviewed by: hselasky, manu
Differential Revision: https://reviews.freebsd.org/D35046

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linuxkpi: Remove unused devclass arguments to DRIVER_MODULE.

Remove unused iicbus_devclass.

linuxkpi: i2c: Add MODULE_DEPEND for iicbus

MFC after: 1 month
MFC with: 1961a14a4743
Fixes: 1961a14a4743 ("linuxkpi: Add i2c support")
Reported by: GregV
Sponsored by: Beckhoff Automation GmbH & Co

linuxkpi: i2c: Add MODULE_DEPEND for iicbus

MFC after: 1 month
MFC with: 1961a14a4743
Fixes: 1961a14a4743 ("linuxkpi: Add i2c support")
Reported by: GregV
Sponsored by: Beckhoff Automation GmbH & Co. KG

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linuxkpi: Add i2c support

Add i2c support to linuxkpi. This is needed by drm-kmod.
For every i2c_adapter added by i2c_add_adapter we add a child to the
device named "lkpi_iic". This child handle the

linuxkpi: Add i2c support

Add i2c support to linuxkpi. This is needed by drm-kmod.
For every i2c_adapter added by i2c_add_adapter we add a child to the
device named "lkpi_iic". This child handle the conversion between
Linux i2c_msgs to FreeBSD iic_msgs.
For every i2c_adapter added by i2c_bit_add_bus we add a child to the
device named "lkpi_iicbb". This child handle the conversion between
Linux i2c_msgs to FreeBSD iic_msgs.
With the help of iic(4), this expose the i2c controller to userspace
allowing a user to query DDC information from a monitor.
e.g.: i2c -f /dev/iic0 -a 0x28 -c 128 -d r
will query the standard EDID from the monitor if plugged.

The bitbang part (lkpi_iicbb) isn't tested at all for now as I don't have
compatible hardware (all my hardware have native i2c controller).

Tested on: Intel (SandyBridge, Skylake, ApolloLake)
Tested on: AMD (Picasso, Polaris (amd64 and arm64))

MFC after: 1 month
Reviewed by: hselasky
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D33053

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