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/?i=1559577023-558-1-git-send-email-suzuki.poulose@xxxxxxx
V1 [2] https://marc.info/?i=1559747630-28065-1-git-send-email-suzuki.poulose@xxxxxxx
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 <atull@xxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Cc: Alexander Aring <alex.aring@xxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Cc: Andreas Noever <andreas.noever@xxxxxxxxx>
Cc: Andrew Lunn <andrew@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Corey Minyard <minyard@xxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Dan Murphy <dmurphy@xxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: David Kershner <david.kershner@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Doug Ledford <dledford@xxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Elie Morisse <syniurge@xxxxxxxxx>
Cc: Eric Anholt <eric@xxxxxxxxxx>
Cc: Felipe Balbi <balbi@xxxxxxxxxx>
Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: Frank Rowand <frowand.list@xxxxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Grygorii Strashko <grygorii.strashko@xxxxxx>
Cc: Harald Freudenberger <freude@xxxxxxxxxxxxx>
Cc: Hartmut Knaack <knaack.h@xxxxxx>
Cc: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: "Heiko Stübner" <heiko@xxxxxxxxx>
Cc: Heiko Stuebner <heiko@xxxxxxxxx>
Cc: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Cc: Inki Dae <inki.dae@xxxxxxxxxxx>
Cc: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>
Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
Cc: Jonathan Hunter <jonathanh@xxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Cc: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
Cc: Michael Jamet <michael.jamet@xxxxxxxxx>
Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Cc: Moritz Fischer <mdf@xxxxxxxxxx>
Cc: Nehal Shah <nehal-bakulchandra.shah@xxxxxxx>
Cc: Oliver Neukum <oneukum@xxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
Cc: Peter Rosin <peda@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Cc: Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Robin Murphy <robin.murphy@xxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Sandy Huang <hjc@xxxxxxxxxxxxxx>
Cc: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: Sebastian Ott <sebott@xxxxxxxxxxxxx>
Cc: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
Cc: Shyam Sundar S K <shyam-sundar.s-k@xxxxxxx>
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Cc: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Thor Thayer <thor.thayer@xxxxxxxxxxxxxxx>
Cc: Tomas Winkler <tomas.winkler@xxxxxxxxx>
Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-acpi@xxxxxxxxxxxxxxx
Cc: linux-fpga@xxxxxxxxxxxxxxx
Cc: linux-i2c@xxxxxxxxxxxxxxx
Cc: linux-leds@xxxxxxxxxxxxxxx
Cc: linux-rockchip@xxxxxxxxxxxxxxxxxxx
Cc: linux-rtc@xxxxxxxxxxxxxxx
Cc: linux-spi@xxxxxxxxxxxxxxx
Cc: linux-usb@xxxxxxxxxxxxxxx
Cc: linux-wpan@xxxxxxxxxxxxxxx
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
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