We have device iterators to find a particular device matching a criteria
for a given bus/class/driver. i.e, {bus,class,driver}_find_device() APIs.
The matching criteria is a function pointer for the APIs. Often the lookup
is based on a generic property of a device (e.g, name, fwnode, of node pointer
or device type) rather than a driver specific information. However, each driver
writes up its own "match" function, spilling the similar match functions all
over the driver subsystems.
Additionally the prototype for the "match" functions accepted by the above APIs
have a minute difference which prevents us otherwise sharing the match
functions.
i.e,
int (*match)(struct device *dev, void *data) for
{bus/driver}_find_device()
vs
int (*match)(struct device *dev, const void *) for class_find_device()
If we promote the former to accept a "const void*" parameter, we could share one
single match function for all the helpers. This series achieves the following:
a) [Patches 03-05] Unify the prototype for "match" functions accepted by the
device lookup APIs.
b) [Patches 06-11] Introduce generic match functions to match devices by the
generic attributes of a device (e.g, name, fwnode, of_node and devt).
c) [Patches 12-27] Also, in order to prevent creation of such match functions
in the future, we introduce wrapper functions for the look up APIs, which
automatically uses the appropriate match functions.
i.e,
{bus/class/driver}_find_device_by_name
{bus/class/driver}_find_device_by_of_node
{bus/class/driver}_find_device_by_fwnode
{bus/class/driver}_find_device_by_devt
{bus/class/driver}_find_device_by_acpi_dev
{bus/class/driver}_find_next_device
and converts the existing users to switch to the new helpers.
d) [Patch 28] Additionally, this series also adds wrapper for finding a
device by matching a device driver for platform bus devices -
platform_find_device_by_driver()
to avoid a few drivers hard coding the platform bus specific details.
Applies on v5.2-rc4, available at [0]
[0] git://linux-arm.org/linux-skp.git driver-cleanup/v2
RFC [1]
https://marc.info/[email protected]
V1 [2]
https://marc.info/[email protected]
Changes since v1:
- Drop start parameter for *_find_device_by_devt().
- Fix build warnings for s390
- Add *_find_device_by_acpi_dev() wrappers.
- Group wrappers and the consumers into single patch, reducing
the total patches to 28 from 57. (Rafael).
- Better description for acpi cleanup patch.
- Added tags from v1.
Cc: Alan Tull <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: Alexander Aring <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Andreas Noever <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Corey Minyard <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Dan Murphy <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Kershner <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Doug Ledford <[email protected]>
Cc: [email protected]
Cc: Elie Morisse <[email protected]>
Cc: Eric Anholt <[email protected]>
Cc: Felipe Balbi <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Frank Rowand <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Grygorii Strashko <[email protected]>
Cc: Harald Freudenberger <[email protected]>
Cc: Hartmut Knaack <[email protected]>
Cc: Heikki Krogerus <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: "Heiko Stübner" <[email protected]>
Cc: Heiko Stuebner <[email protected]>
Cc: Heiner Kallweit <[email protected]>
Cc: Inki Dae <[email protected]>
Cc: Jacek Anaszewski <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Jonathan Cameron <[email protected]>
Cc: Jonathan Hunter <[email protected]>
Cc: Lee Jones <[email protected]>
Cc: Len Brown <[email protected]
Cc: Liam Girdwood <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: "Martin K. Petersen" <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Cc: Maxime Coquelin <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Michael Jamet <[email protected]>
Cc: Mika Westerberg <[email protected]>
Cc: Moritz Fischer <[email protected]>
Cc: Nehal Shah <[email protected]>
Cc: Oliver Neukum <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: Peter Oberparleiter <[email protected]>
Cc: Peter Rosin <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Rafael J. Wysocki" <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Robin Murphy <[email protected]>
Cc: Russell King <[email protected]>
Cc: Sandy Huang <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Sebastian Ott <[email protected]>
Cc: Seung-Woo Kim <[email protected]>
Cc: Shyam Sundar S K <[email protected]>
Cc: Srinivas Kandagatla <[email protected]>
Cc: Stefan Schmidt <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Thor Thayer <[email protected]>
Cc: Tomas Winkler <[email protected]>
Cc: Ulf Hansson <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Wolfram Sang <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Suzuki K Poulose (28):
staging: most-core: Use bus_find_device_by_name
mfd: Remove unused helper syscon_regmap_lookup_by_pdevname
acpi: utils: Cleanup acpi_dev_match_cb
bus_find_device: Unify the match callback with class_find_device
driver_find_device: Unify the match function with class_find_device()
drivers: Add generic helper to match by of_node
drivers: Add generic helper to match by fwnode
drivers: Add generic helper to match by device type
drivers: Add generic match helper by ACPI_COMPANION device
drivers: Add generic helper to match by name
drivers: Add generic helper to match any device
drivers: Introduce class_find_device_by_name() helper
drivers: Introduce class_find_device_by_of_node() helper
drivers: Introduce class_find_device_by_fwnode() helper
drivers: Introduce class_find_device_by_devt() helper
drivers: Introduce class_find_device_by_acpi_dev() helper
drivers: Introduce bus_find_device_by_of_node() helper
drivers: Introduce bus_find_device_by_fwnode() helper
drivers: Introduce bus_find_device_by_devt() helper
drivers: Introduce bus_find_next_device() helper
drivers: Introduce bus_find_device_by_acpi_dev() helper
drivers: Introduce driver_find_device_by_name() helper
drivers: Introduce driver_find_device_by_of_node() helper
drivers: Introduce driver_find_device_by_fwnode() helper
drivers: Introduce driver_find_device_by_devt() helper
drivers: Introduce driver_find_next_device() helper
drivers: Introduce driver_find_device_by_acpi_dev() helper
platform: Add platform_find_device_by_driver() helper
arch/powerpc/platforms/pseries/ibmebus.c | 4 +-
drivers/acpi/acpi_lpss.c | 4 +-
drivers/acpi/sleep.c | 2 +-
drivers/acpi/utils.c | 11 +-
drivers/amba/tegra-ahb.c | 11 +-
drivers/base/bus.c | 28 +--
drivers/base/core.c | 45 +++-
drivers/base/devcon.c | 8 +-
drivers/base/driver.c | 4 +-
drivers/base/platform.c | 14 ++
drivers/char/ipmi/ipmi_msghandler.c | 8 +-
drivers/char/ipmi/ipmi_si_platform.c | 2 +-
drivers/firmware/efi/dev-path-parser.c | 4 +-
drivers/fpga/fpga-bridge.c | 8 +-
drivers/fpga/fpga-mgr.c | 8 +-
drivers/fpga/of-fpga-region.c | 7 +-
drivers/gpu/drm/drm_mipi_dsi.c | 7 +-
drivers/gpu/drm/exynos/exynos_drm_drv.c | 9 +-
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 3 +-
drivers/gpu/drm/tegra/dc.c | 4 +-
drivers/gpu/drm/vc4/vc4_drv.c | 3 +-
drivers/hwtracing/coresight/coresight.c | 6 +-
drivers/hwtracing/coresight/of_coresight.c | 11 +-
drivers/hwtracing/intel_th/core.c | 11 +-
drivers/hwtracing/stm/core.c | 9 +-
drivers/i2c/busses/i2c-amd-mp2-pci.c | 8 +-
drivers/i2c/i2c-core-acpi.c | 10 +-
drivers/i2c/i2c-core-of.c | 9 +-
drivers/iio/inkern.c | 2 +-
drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 8 +-
drivers/iommu/arm-smmu-v3.c | 9 +-
drivers/iommu/arm-smmu.c | 9 +-
drivers/leds/led-class.c | 9 +-
drivers/mfd/altera-sysmgr.c | 14 +-
drivers/mfd/syscon.c | 21 --
drivers/misc/mei/main.c | 9 +-
drivers/mux/core.c | 7 +-
drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c | 8 +-
drivers/net/ethernet/ti/cpsw-phy-sel.c | 4 +-
drivers/net/ethernet/ti/davinci_emac.c | 2 +-
drivers/net/ethernet/toshiba/tc35815.c | 4 +-
drivers/net/phy/mdio_bus.c | 9 +-
drivers/nvmem/core.c | 7 +-
drivers/of/of_mdio.c | 8 +-
drivers/of/platform.c | 7 +-
drivers/pci/probe.c | 7 +-
drivers/pci/search.c | 4 +-
drivers/regulator/of_regulator.c | 7 +-
drivers/rtc/interface.c | 11 +-
drivers/s390/cio/ccwgroup.c | 18 +-
drivers/s390/cio/chsc_sch.c | 2 +-
drivers/s390/cio/css.c | 4 +-
drivers/s390/cio/device.c | 21 +-
drivers/s390/cio/scm.c | 4 +-
drivers/s390/crypto/ap_bus.c | 8 +-
drivers/s390/crypto/zcrypt_api.c | 22 +-
drivers/scsi/scsi_proc.c | 9 +-
drivers/spi/spi.c | 28 +--
drivers/staging/most/core.c | 9 +-
drivers/thunderbolt/switch.c | 4 +-
drivers/tty/tty_io.c | 8 +-
drivers/usb/core/devio.c | 8 +-
drivers/usb/core/usb.c | 4 +-
drivers/usb/phy/phy-am335x-control.c | 4 +-
drivers/usb/phy/phy-isp1301.c | 4 +-
drivers/usb/roles/class.c | 16 +-
drivers/usb/typec/class.c | 16 +-
drivers/visorbus/visorbus_main.c | 4 +-
include/linux/device.h | 247 ++++++++++++++++++++-
include/linux/mfd/syscon.h | 6 -
include/linux/platform_device.h | 3 +
net/ieee802154/core.c | 7 +-
sound/soc/rockchip/rk3399_gru_sound.c | 9 +-
73 files changed, 407 insertions(+), 482 deletions(-)
--
2.7.4
_______________________________________________
dri-devel mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/dri-devel
