en Copyright 2025 Java http://opengrok.net:8080/history/src/sys/compat/linuxkpi/common/include/linux/i2c-algo-bit.h#1961a14a47437595fb7fcdc20e327440e3eb51e2 linuxkpi: Add i2c supportAdd i2c support to linuxkpi. This is needed by drm-kmod.For every i2c_adapter added by i2c_add_adapter we add a child to thedevice named "lkpi_iic". This child handle the conversion betweenLinux i2c_msgs to FreeBSD iic_msgs.For every i2c_adapter added by i2c_bit_add_bus we add a child to thedevice named "lkpi_iicbb". This child handle the conversion betweenLinux i2c_msgs to FreeBSD iic_msgs.With the help of iic(4), this expose the i2c controller to userspaceallowing a user to query DDC information from a monitor.e.g.: i2c -f /dev/iic0 -a 0x28 -c 128 -d rwill 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 havecompatible 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 monthReviewed by: hselaskySponsored by: Beckhoff Automation GmbH & Co. KGDifferential Revision: https://reviews.freebsd.org/D33053 List of files: /src/sys/compat/linuxkpi/common/include/linux/i2c-algo-bit.h Thu, 04 Nov 2021 09:42:37 +0000 Emmanuel Vadot <manu@FreeBSD.org> http://opengrok.net:8080/history/src/sys/compat/linuxkpi/common/include/linux/i2c-algo-bit.h#1961a14a47437595fb7fcdc20e327440e3eb51e2 linuxkpi: Add i2c supportAdd i2c support to linuxkpi. This is needed by drm-kmod.For every i2c_adapter added by i2c_add_adapter we add a child to thedevice named "lkpi_iic". This child handle the conversion betweenLinux i2c_msgs to FreeBSD iic_msgs.For every i2c_adapter added by i2c_bit_add_bus we add a child to thedevice named "lkpi_iicbb". This child handle the conversion betweenLinux i2c_msgs to FreeBSD iic_msgs.With the help of iic(4), this expose the i2c controller to userspaceallowing a user to query DDC information from a monitor.e.g.: i2c -f /dev/iic0 -a 0x28 -c 128 -d rwill 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 havecompatible 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 monthReviewed by: hselaskySponsored by: Beckhoff Automation GmbH & Co. KGDifferential Revision: https://reviews.freebsd.org/D33053 List of files: /src/sys/compat/linuxkpi/common/include/linux/i2c-algo-bit.h Thu, 04 Nov 2021 09:42:37 +0000 Emmanuel Vadot <manu@FreeBSD.org> http://opengrok.net:8080/history/src/sys/compat/linuxkpi/common/include/linux/i2c-algo-bit.h#1961a14a47437595fb7fcdc20e327440e3eb51e2 linuxkpi: Add i2c supportAdd i2c support to linuxkpi. This is needed by drm-kmod.For every i2c_adapter added by i2c_add_adapter we add a child to thedevice named "lkpi_iic". This child handle the conversion betweenLinux i2c_msgs to FreeBSD iic_msgs.For every i2c_adapter added by i2c_bit_add_bus we add a child to thedevice named "lkpi_iicbb". This child handle the conversion betweenLinux i2c_msgs to FreeBSD iic_msgs.With the help of iic(4), this expose the i2c controller to userspaceallowing a user to query DDC information from a monitor.e.g.: i2c -f /dev/iic0 -a 0x28 -c 128 -d rwill 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 havecompatible 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 monthReviewed by: hselaskySponsored by: Beckhoff Automation GmbH & Co. KGDifferential Revision: https://reviews.freebsd.org/D33053 List of files: /src/sys/compat/linuxkpi/common/include/linux/i2c-algo-bit.h Thu, 04 Nov 2021 09:42:37 +0000 Emmanuel Vadot <manu@FreeBSD.org>