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1961a14a47
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
48 lines
929 B
Makefile
48 lines
929 B
Makefile
# $FreeBSD$
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.PATH: ${SRCTOP}/sys/compat/linuxkpi/common/src
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KMOD= linuxkpi
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SRCS= linux_compat.c \
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linux_current.c \
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linux_devres.c \
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linux_dmi.c \
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linux_domain.c \
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linux_firmware.c \
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linux_fpu.c \
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linux_hrtimer.c \
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linux_idr.c \
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linux_interrupt.c \
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linux_i2c.c \
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linux_i2cbb.c \
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linux_kmod.c \
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linux_kthread.c \
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linux_lock.c \
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linux_netdev.c \
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linux_page.c \
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linux_pci.c \
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linux_radix.c \
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linux_rcu.c \
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linux_seq_file.c \
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linux_schedule.c \
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linux_shmemfs.c \
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linux_shrinker.c \
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linux_skbuff.c \
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linux_slab.c \
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linux_tasklet.c \
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linux_usb.c \
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linux_work.c \
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linux_xarray.c
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.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
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${MACHINE_CPUARCH} == "i386"
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SRCS+= opt_acpi.h acpi_if.h linux_acpi.c
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.endif
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SRCS+= ${LINUXKPI_GENSRCS}
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CFLAGS+= -I${SRCTOP}/sys/compat/linuxkpi/common/include
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CFLAGS+= -I${SRCTOP}/sys/contrib/ck/include
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EXPORT_SYMS= YES
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.include <bsd.kmod.mk>
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