Jason Gunthorpe 2e4986cf2d fwctl: Add basic structure for a class subsystem with a cdev
Create the class, character device and functions for a fwctl driver to
un/register to the subsystem.

A typical fwctl driver has a sysfs presence like:

$ ls -l /dev/fwctl/fwctl0
crw------- 1 root root 250, 0 Apr 25 19:16 /dev/fwctl/fwctl0

$ ls /sys/class/fwctl/fwctl0
dev  device  power  subsystem  uevent

$ ls /sys/class/fwctl/fwctl0/device/infiniband/
ibp0s10f0

$ ls /sys/class/infiniband/ibp0s10f0/device/fwctl/
fwctl0/

$ ls /sys/devices/pci0000:00/0000:00:0a.0/fwctl/fwctl0
dev  device  power  subsystem  uevent

Which allows userspace to link all the multi-subsystem driver components
together and learn the subsystem specific names for the device's
components.

Link: https://patch.msgid.link/r/1-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Tested-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2025-03-06 15:11:30 -04:00

251 lines
4.0 KiB
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# SPDX-License-Identifier: GPL-2.0
menu "Device Drivers"
# Keep I/O buses first
source "drivers/amba/Kconfig"
source "drivers/eisa/Kconfig"
source "drivers/pci/Kconfig"
source "drivers/cxl/Kconfig"
source "drivers/pcmcia/Kconfig"
source "drivers/rapidio/Kconfig"
source "drivers/base/Kconfig"
source "drivers/bus/Kconfig"
source "drivers/cache/Kconfig"
source "drivers/connector/Kconfig"
source "drivers/firmware/Kconfig"
source "drivers/fwctl/Kconfig"
source "drivers/gnss/Kconfig"
source "drivers/mtd/Kconfig"
source "drivers/of/Kconfig"
source "drivers/parport/Kconfig"
source "drivers/pnp/Kconfig"
source "drivers/block/Kconfig"
source "drivers/nvme/Kconfig"
source "drivers/misc/Kconfig"
source "drivers/scsi/Kconfig"
source "drivers/ata/Kconfig"
source "drivers/md/Kconfig"
source "drivers/target/Kconfig"
source "drivers/message/fusion/Kconfig"
source "drivers/firewire/Kconfig"
source "drivers/macintosh/Kconfig"
source "drivers/net/Kconfig"
source "drivers/isdn/Kconfig"
# input before char - char/joystick depends on it. As does USB.
source "drivers/input/Kconfig"
source "drivers/char/Kconfig"
source "drivers/i2c/Kconfig"
source "drivers/i3c/Kconfig"
source "drivers/spi/Kconfig"
source "drivers/spmi/Kconfig"
source "drivers/hsi/Kconfig"
source "drivers/pps/Kconfig"
source "drivers/ptp/Kconfig"
source "drivers/pinctrl/Kconfig"
source "drivers/gpio/Kconfig"
source "drivers/w1/Kconfig"
source "drivers/power/Kconfig"
source "drivers/hwmon/Kconfig"
source "drivers/thermal/Kconfig"
source "drivers/watchdog/Kconfig"
source "drivers/ssb/Kconfig"
source "drivers/bcma/Kconfig"
source "drivers/mfd/Kconfig"
source "drivers/regulator/Kconfig"
source "drivers/media/Kconfig"
source "drivers/video/Kconfig"
source "drivers/accel/Kconfig"
source "sound/Kconfig"
source "drivers/hid/Kconfig"
source "drivers/usb/Kconfig"
source "drivers/mmc/Kconfig"
source "drivers/ufs/Kconfig"
source "drivers/memstick/Kconfig"
source "drivers/leds/Kconfig"
source "drivers/accessibility/Kconfig"
source "drivers/infiniband/Kconfig"
source "drivers/edac/Kconfig"
source "drivers/rtc/Kconfig"
source "drivers/dma/Kconfig"
source "drivers/dma-buf/Kconfig"
source "drivers/dca/Kconfig"
source "drivers/uio/Kconfig"
source "drivers/vfio/Kconfig"
source "drivers/virt/Kconfig"
source "drivers/virtio/Kconfig"
source "drivers/vdpa/Kconfig"
source "drivers/vhost/Kconfig"
source "drivers/hv/Kconfig"
source "drivers/xen/Kconfig"
source "drivers/greybus/Kconfig"
source "drivers/comedi/Kconfig"
source "drivers/staging/Kconfig"
source "drivers/platform/Kconfig"
source "drivers/clk/Kconfig"
source "drivers/hwspinlock/Kconfig"
source "drivers/clocksource/Kconfig"
source "drivers/mailbox/Kconfig"
source "drivers/iommu/Kconfig"
source "drivers/remoteproc/Kconfig"
source "drivers/rpmsg/Kconfig"
source "drivers/soundwire/Kconfig"
source "drivers/soc/Kconfig"
source "drivers/pmdomain/Kconfig"
source "drivers/devfreq/Kconfig"
source "drivers/extcon/Kconfig"
source "drivers/memory/Kconfig"
source "drivers/iio/Kconfig"
source "drivers/ntb/Kconfig"
source "drivers/pwm/Kconfig"
source "drivers/irqchip/Kconfig"
source "drivers/ipack/Kconfig"
source "drivers/reset/Kconfig"
source "drivers/phy/Kconfig"
source "drivers/powercap/Kconfig"
source "drivers/mcb/Kconfig"
source "drivers/perf/Kconfig"
source "drivers/ras/Kconfig"
source "drivers/thunderbolt/Kconfig"
source "drivers/android/Kconfig"
source "drivers/gpu/trace/Kconfig"
source "drivers/nvdimm/Kconfig"
source "drivers/dax/Kconfig"
source "drivers/nvmem/Kconfig"
source "drivers/hwtracing/Kconfig"
source "drivers/fpga/Kconfig"
source "drivers/fsi/Kconfig"
source "drivers/tee/Kconfig"
source "drivers/mux/Kconfig"
source "drivers/opp/Kconfig"
source "drivers/siox/Kconfig"
source "drivers/slimbus/Kconfig"
source "drivers/interconnect/Kconfig"
source "drivers/counter/Kconfig"
source "drivers/most/Kconfig"
source "drivers/peci/Kconfig"
source "drivers/hte/Kconfig"
source "drivers/cdx/Kconfig"
source "drivers/dpll/Kconfig"
endmenu