| Message ID | 20190723221838.12024-6-suzuki.poulose@arm.com (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | 00500147cbd3fc51353d0d003eaa9d31c72c0d50 |
| Headers | show |
| Series | [v3,1/7] drivers: Introduce device lookup variants by name | expand |
On Tue, Jul 23, 2019 at 11:18:36PM +0100, Suzuki K Poulose wrote: > Add a generic helper to match a device by the ACPI_COMPANION device > and provide wrappers for the device lookup APIs. Acked-by: Mark Brown <broonie@kernel.org>
On Tue, Jul 23, 2019 at 11:18:36PM +0100, Suzuki K Poulose wrote: > Add a generic helper to match a device by the ACPI_COMPANION device > and provide wrappers for the device lookup APIs. > > Cc: Len Brown <lenb@kernel.org> > Cc: linux-acpi@vger.kernel.org > Cc: linux-spi@vger.kernel.org > Cc: Mark Brown <broonie@kernel.org> > Cc: Mika Westerberg <mika.westerberg@linux.intel.com> > Cc: Wolfram Sang <wsa@the-dreams.de> > Cc: linux-i2c@vger.kernel.org > Cc: Mark Brown <broonie@kernel.org> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: "Rafael J. Wysocki" <rafael@kernel.org> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> From my side, OK: Acked-by: Wolfram Sang <wsa@the-dreams.de> # I2C parts yet you missed to cc the I2C ACPI maintainers. Done so now. > --- > drivers/base/core.c | 6 ++++ > drivers/i2c/i2c-core-acpi.c | 11 ++----- > drivers/spi/spi.c | 8 +---- > include/linux/device.h | 65 +++++++++++++++++++++++++++++++++++++ > 4 files changed, 74 insertions(+), 16 deletions(-) > > diff --git a/drivers/base/core.c b/drivers/base/core.c > index 3abc32b60c0a..57d71bc2c559 100644 > --- a/drivers/base/core.c > +++ b/drivers/base/core.c > @@ -3373,3 +3373,9 @@ int device_match_devt(struct device *dev, const void *pdevt) > return dev->devt == *(dev_t *)pdevt; > } > EXPORT_SYMBOL_GPL(device_match_devt); > + > +int device_match_acpi_dev(struct device *dev, const void *adev) > +{ > + return ACPI_COMPANION(dev) == adev; > +} > +EXPORT_SYMBOL(device_match_acpi_dev); > diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c > index 4dbbc9a35f65..bc80aafb521f 100644 > --- a/drivers/i2c/i2c-core-acpi.c > +++ b/drivers/i2c/i2c-core-acpi.c > @@ -354,17 +354,11 @@ static int i2c_acpi_find_match_adapter(struct device *dev, const void *data) > return ACPI_HANDLE(dev) == (acpi_handle)data; > } > > -static int i2c_acpi_find_match_device(struct device *dev, const void *data) > -{ > - return ACPI_COMPANION(dev) == data; > -} > > struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) > { > - struct device *dev; > + struct device *dev = bus_find_device_by_acpi_dev(&i2c_bus_type, handle); > > - dev = bus_find_device(&i2c_bus_type, NULL, handle, > - i2c_acpi_find_match_adapter); > return dev ? i2c_verify_adapter(dev) : NULL; > } > EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); > @@ -373,8 +367,7 @@ static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) > { > struct device *dev; > > - dev = bus_find_device(&i2c_bus_type, NULL, adev, > - i2c_acpi_find_match_device); > + dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev); > return dev ? i2c_verify_client(dev) : NULL; > } > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c > index a591da87981a..c486a6f84c2c 100644 > --- a/drivers/spi/spi.c > +++ b/drivers/spi/spi.c > @@ -3741,11 +3741,6 @@ static int spi_acpi_controller_match(struct device *dev, const void *data) > return ACPI_COMPANION(dev->parent) == data; > } > > -static int spi_acpi_device_match(struct device *dev, const void *data) > -{ > - return ACPI_COMPANION(dev) == data; > -} > - > static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev) > { > struct device *dev; > @@ -3765,8 +3760,7 @@ static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev) > { > struct device *dev; > > - dev = bus_find_device(&spi_bus_type, NULL, adev, spi_acpi_device_match); > - > + dev = bus_find_device_by_acpi_dev(&spi_bus_type, adev); > return dev ? to_spi_device(dev) : NULL; > } > > diff --git a/include/linux/device.h b/include/linux/device.h > index 93b2f55ef44e..7514ef3d3f1a 100644 > --- a/include/linux/device.h > +++ b/include/linux/device.h > @@ -168,6 +168,7 @@ int device_match_name(struct device *dev, const void *name); > int device_match_of_node(struct device *dev, const void *np); > int device_match_fwnode(struct device *dev, const void *fwnode); > int device_match_devt(struct device *dev, const void *pdevt); > +int device_match_acpi_dev(struct device *dev, const void *adev); > > int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, > int (*fn)(struct device *dev, void *data)); > @@ -224,6 +225,28 @@ static inline struct device *bus_find_device_by_devt(struct bus_type *bus, > return bus_find_device(bus, NULL, &devt, device_match_devt); > } > > +#ifdef CONFIG_ACPI > +struct acpi_device; > + > +/** > + * bus_find_device_by_acpi_dev : device iterator for locating a particular device > + * matching the ACPI COMPANION device. > + * @bus: bus type > + * @adev: ACPI COMPANION device to match. > + */ > +static inline struct device * > +bus_find_device_by_acpi_dev(struct bus_type *bus, const struct acpi_device *adev) > +{ > + return bus_find_device(bus, NULL, adev, device_match_acpi_dev); > +} > +#else > +static inline struct device * > +bus_find_device_by_acpi_dev(struct bus_type *bus, const void *adev) > +{ > + return NULL; > +} > +#endif > + > struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id, > struct device *hint); > int bus_for_each_drv(struct bus_type *bus, struct device_driver *start, > @@ -442,6 +465,27 @@ static inline struct device *driver_find_device_by_devt(struct device_driver *dr > return driver_find_device(drv, NULL, &devt, device_match_devt); > } > > +#ifdef CONFIG_ACPI > +/** > + * driver_find_device_by_acpi_dev : device iterator for locating a particular > + * device matching the ACPI_COMPANION device. > + * @driver: the driver we're iterating > + * @adev: ACPI_COMPANION device to match. > + */ > +static inline struct device * > +driver_find_device_by_acpi_dev(struct device_driver *drv, > + const struct acpi_device *adev) > +{ > + return driver_find_device(drv, NULL, adev, device_match_acpi_dev); > +} > +#else > +static inline struct device * > +driver_find_device_by_acpi_dev(struct device_driver *drv, const void *adev) > +{ > + return NULL; > +} > +#endif > + > void driver_deferred_probe_add(struct device *dev); > int driver_deferred_probe_check_state(struct device *dev); > int driver_deferred_probe_check_state_continue(struct device *dev); > @@ -620,6 +664,27 @@ static inline struct device *class_find_device_by_devt(struct class *class, > return class_find_device(class, NULL, &devt, device_match_devt); > } > > +#ifdef CONFIG_ACPI > +struct acpi_device; > +/** > + * class_find_device_by_acpi_dev : device iterator for locating a particular > + * device matching the ACPI_COMPANION device. > + * @class: class type > + * @adev: ACPI_COMPANION device to match. > + */ > +static inline struct device * > +class_find_device_by_acpi_dev(struct class *class, const struct acpi_device *adev) > +{ > + return class_find_device(class, NULL, adev, device_match_acpi_dev); > +} > +#else > +static inline struct device * > +class_find_device_by_acpi_dev(struct class *class, const void *adev) > +{ > + return NULL; > +} > +#endif > + > struct class_attribute { > struct attribute attr; > ssize_t (*show)(struct class *class, struct class_attribute *attr, > -- > 2.21.0 >
On Fri, Jul 26, 2019 at 10:23:54PM +0200, Wolfram Sang wrote: > On Tue, Jul 23, 2019 at 11:18:36PM +0100, Suzuki K Poulose wrote: > > Add a generic helper to match a device by the ACPI_COMPANION device > > and provide wrappers for the device lookup APIs. > > > > Cc: Len Brown <lenb@kernel.org> > > Cc: linux-acpi@vger.kernel.org > > Cc: linux-spi@vger.kernel.org > > Cc: Mark Brown <broonie@kernel.org> > > Cc: Mika Westerberg <mika.westerberg@linux.intel.com> > > Cc: Wolfram Sang <wsa@the-dreams.de> > > Cc: linux-i2c@vger.kernel.org > > Cc: Mark Brown <broonie@kernel.org> > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > Cc: "Rafael J. Wysocki" <rafael@kernel.org> > > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> > > From my side, OK: > > Acked-by: Wolfram Sang <wsa@the-dreams.de> # I2C parts > > yet you missed to cc the I2C ACPI maintainers. Done so now. Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Thanks, Wolfram, for notifying. > > > --- > > drivers/base/core.c | 6 ++++ > > drivers/i2c/i2c-core-acpi.c | 11 ++----- > > drivers/spi/spi.c | 8 +---- > > include/linux/device.h | 65 +++++++++++++++++++++++++++++++++++++ > > 4 files changed, 74 insertions(+), 16 deletions(-) > > > > diff --git a/drivers/base/core.c b/drivers/base/core.c > > index 3abc32b60c0a..57d71bc2c559 100644 > > --- a/drivers/base/core.c > > +++ b/drivers/base/core.c > > @@ -3373,3 +3373,9 @@ int device_match_devt(struct device *dev, const void *pdevt) > > return dev->devt == *(dev_t *)pdevt; > > } > > EXPORT_SYMBOL_GPL(device_match_devt); > > + > > +int device_match_acpi_dev(struct device *dev, const void *adev) > > +{ > > + return ACPI_COMPANION(dev) == adev; > > +} > > +EXPORT_SYMBOL(device_match_acpi_dev); > > diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c > > index 4dbbc9a35f65..bc80aafb521f 100644 > > --- a/drivers/i2c/i2c-core-acpi.c > > +++ b/drivers/i2c/i2c-core-acpi.c > > @@ -354,17 +354,11 @@ static int i2c_acpi_find_match_adapter(struct device *dev, const void *data) > > return ACPI_HANDLE(dev) == (acpi_handle)data; > > } > > > > -static int i2c_acpi_find_match_device(struct device *dev, const void *data) > > -{ > > - return ACPI_COMPANION(dev) == data; > > -} > > > > struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) > > { > > - struct device *dev; > > + struct device *dev = bus_find_device_by_acpi_dev(&i2c_bus_type, handle); > > > > - dev = bus_find_device(&i2c_bus_type, NULL, handle, > > - i2c_acpi_find_match_adapter); > > return dev ? i2c_verify_adapter(dev) : NULL; > > } > > EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); > > @@ -373,8 +367,7 @@ static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) > > { > > struct device *dev; > > > > - dev = bus_find_device(&i2c_bus_type, NULL, adev, > > - i2c_acpi_find_match_device); > > + dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev); > > return dev ? i2c_verify_client(dev) : NULL; > > } > > > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c > > index a591da87981a..c486a6f84c2c 100644 > > --- a/drivers/spi/spi.c > > +++ b/drivers/spi/spi.c > > @@ -3741,11 +3741,6 @@ static int spi_acpi_controller_match(struct device *dev, const void *data) > > return ACPI_COMPANION(dev->parent) == data; > > } > > > > -static int spi_acpi_device_match(struct device *dev, const void *data) > > -{ > > - return ACPI_COMPANION(dev) == data; > > -} > > - > > static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev) > > { > > struct device *dev; > > @@ -3765,8 +3760,7 @@ static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev) > > { > > struct device *dev; > > > > - dev = bus_find_device(&spi_bus_type, NULL, adev, spi_acpi_device_match); > > - > > + dev = bus_find_device_by_acpi_dev(&spi_bus_type, adev); > > return dev ? to_spi_device(dev) : NULL; > > } > > > > diff --git a/include/linux/device.h b/include/linux/device.h > > index 93b2f55ef44e..7514ef3d3f1a 100644 > > --- a/include/linux/device.h > > +++ b/include/linux/device.h > > @@ -168,6 +168,7 @@ int device_match_name(struct device *dev, const void *name); > > int device_match_of_node(struct device *dev, const void *np); > > int device_match_fwnode(struct device *dev, const void *fwnode); > > int device_match_devt(struct device *dev, const void *pdevt); > > +int device_match_acpi_dev(struct device *dev, const void *adev); > > > > int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, > > int (*fn)(struct device *dev, void *data)); > > @@ -224,6 +225,28 @@ static inline struct device *bus_find_device_by_devt(struct bus_type *bus, > > return bus_find_device(bus, NULL, &devt, device_match_devt); > > } > > > > +#ifdef CONFIG_ACPI > > +struct acpi_device; > > + > > +/** > > + * bus_find_device_by_acpi_dev : device iterator for locating a particular device > > + * matching the ACPI COMPANION device. > > + * @bus: bus type > > + * @adev: ACPI COMPANION device to match. > > + */ > > +static inline struct device * > > +bus_find_device_by_acpi_dev(struct bus_type *bus, const struct acpi_device *adev) > > +{ > > + return bus_find_device(bus, NULL, adev, device_match_acpi_dev); > > +} > > +#else > > +static inline struct device * > > +bus_find_device_by_acpi_dev(struct bus_type *bus, const void *adev) > > +{ > > + return NULL; > > +} > > +#endif > > + > > struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id, > > struct device *hint); > > int bus_for_each_drv(struct bus_type *bus, struct device_driver *start, > > @@ -442,6 +465,27 @@ static inline struct device *driver_find_device_by_devt(struct device_driver *dr > > return driver_find_device(drv, NULL, &devt, device_match_devt); > > } > > > > +#ifdef CONFIG_ACPI > > +/** > > + * driver_find_device_by_acpi_dev : device iterator for locating a particular > > + * device matching the ACPI_COMPANION device. > > + * @driver: the driver we're iterating > > + * @adev: ACPI_COMPANION device to match. > > + */ > > +static inline struct device * > > +driver_find_device_by_acpi_dev(struct device_driver *drv, > > + const struct acpi_device *adev) > > +{ > > + return driver_find_device(drv, NULL, adev, device_match_acpi_dev); > > +} > > +#else > > +static inline struct device * > > +driver_find_device_by_acpi_dev(struct device_driver *drv, const void *adev) > > +{ > > + return NULL; > > +} > > +#endif > > + > > void driver_deferred_probe_add(struct device *dev); > > int driver_deferred_probe_check_state(struct device *dev); > > int driver_deferred_probe_check_state_continue(struct device *dev); > > @@ -620,6 +664,27 @@ static inline struct device *class_find_device_by_devt(struct class *class, > > return class_find_device(class, NULL, &devt, device_match_devt); > > } > > > > +#ifdef CONFIG_ACPI > > +struct acpi_device; > > +/** > > + * class_find_device_by_acpi_dev : device iterator for locating a particular > > + * device matching the ACPI_COMPANION device. > > + * @class: class type > > + * @adev: ACPI_COMPANION device to match. > > + */ > > +static inline struct device * > > +class_find_device_by_acpi_dev(struct class *class, const struct acpi_device *adev) > > +{ > > + return class_find_device(class, NULL, adev, device_match_acpi_dev); > > +} > > +#else > > +static inline struct device * > > +class_find_device_by_acpi_dev(struct class *class, const void *adev) > > +{ > > + return NULL; > > +} > > +#endif > > + > > struct class_attribute { > > struct attribute attr; > > ssize_t (*show)(struct class *class, struct class_attribute *attr, > > -- > > 2.21.0 > >
On Thu, Aug 01, 2019 at 02:58:56PM +0300, Andy Shevchenko wrote: > On Fri, Jul 26, 2019 at 10:23:54PM +0200, Wolfram Sang wrote: > > On Tue, Jul 23, 2019 at 11:18:36PM +0100, Suzuki K Poulose wrote: > > > Add a generic helper to match a device by the ACPI_COMPANION device > > > and provide wrappers for the device lookup APIs. > > > > > > Cc: Len Brown <lenb@kernel.org> > > > Cc: linux-acpi@vger.kernel.org > > > Cc: linux-spi@vger.kernel.org > > > Cc: Mark Brown <broonie@kernel.org> > > > Cc: Mika Westerberg <mika.westerberg@linux.intel.com> > > > Cc: Wolfram Sang <wsa@the-dreams.de> > > > Cc: linux-i2c@vger.kernel.org > > > Cc: Mark Brown <broonie@kernel.org> > > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > > Cc: "Rafael J. Wysocki" <rafael@kernel.org> > > > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> > > > > From my side, OK: > > > > Acked-by: Wolfram Sang <wsa@the-dreams.de> # I2C parts > > > > yet you missed to cc the I2C ACPI maintainers. Done so now. > > Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > > Thanks, Wolfram, for notifying. Sure. There seems to be a problem, though? Please check: [PATCH 1/3] i2c: Revert incorrect conversion to use generic helper which came in today.
On Thu, Aug 01, 2019 at 02:08:30PM +0200, Wolfram Sang wrote: > On Thu, Aug 01, 2019 at 02:58:56PM +0300, Andy Shevchenko wrote: > > On Fri, Jul 26, 2019 at 10:23:54PM +0200, Wolfram Sang wrote: > > > On Tue, Jul 23, 2019 at 11:18:36PM +0100, Suzuki K Poulose wrote: > > > > Add a generic helper to match a device by the ACPI_COMPANION device > > > > and provide wrappers for the device lookup APIs. > > > > > > > > Cc: Len Brown <lenb@kernel.org> > > > > Cc: linux-acpi@vger.kernel.org > > > > Cc: linux-spi@vger.kernel.org > > > > Cc: Mark Brown <broonie@kernel.org> > > > > Cc: Mika Westerberg <mika.westerberg@linux.intel.com> > > > > Cc: Wolfram Sang <wsa@the-dreams.de> > > > > Cc: linux-i2c@vger.kernel.org > > > > Cc: Mark Brown <broonie@kernel.org> > > > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > > > Cc: "Rafael J. Wysocki" <rafael@kernel.org> > > > > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> > > > > > > From my side, OK: > > > > > > Acked-by: Wolfram Sang <wsa@the-dreams.de> # I2C parts > > > > > > yet you missed to cc the I2C ACPI maintainers. Done so now. > > > > Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > > > > Thanks, Wolfram, for notifying. > > Sure. There seems to be a problem, though? Please check: > > [PATCH 1/3] i2c: Revert incorrect conversion to use generic helper > > which came in today. It's again not Cc'ed to all parties. But OK, looks good to me. Tough may be Jarkko can test all this.
> It's again not Cc'ed to all parties. > But OK, looks good to me. > Tough may be Jarkko can test all this. To be fair, only Mika is listed as I2C ACPI maintainer. Feel free to add more :) I assume Mika doesn't mind.
diff --git a/drivers/base/core.c b/drivers/base/core.c index 3abc32b60c0a..57d71bc2c559 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -3373,3 +3373,9 @@ int device_match_devt(struct device *dev, const void *pdevt) return dev->devt == *(dev_t *)pdevt; } EXPORT_SYMBOL_GPL(device_match_devt); + +int device_match_acpi_dev(struct device *dev, const void *adev) +{ + return ACPI_COMPANION(dev) == adev; +} +EXPORT_SYMBOL(device_match_acpi_dev); diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 4dbbc9a35f65..bc80aafb521f 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -354,17 +354,11 @@ static int i2c_acpi_find_match_adapter(struct device *dev, const void *data) return ACPI_HANDLE(dev) == (acpi_handle)data; } -static int i2c_acpi_find_match_device(struct device *dev, const void *data) -{ - return ACPI_COMPANION(dev) == data; -} struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) { - struct device *dev; + struct device *dev = bus_find_device_by_acpi_dev(&i2c_bus_type, handle); - dev = bus_find_device(&i2c_bus_type, NULL, handle, - i2c_acpi_find_match_adapter); return dev ? i2c_verify_adapter(dev) : NULL; } EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); @@ -373,8 +367,7 @@ static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) { struct device *dev; - dev = bus_find_device(&i2c_bus_type, NULL, adev, - i2c_acpi_find_match_device); + dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev); return dev ? i2c_verify_client(dev) : NULL; } diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index a591da87981a..c486a6f84c2c 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3741,11 +3741,6 @@ static int spi_acpi_controller_match(struct device *dev, const void *data) return ACPI_COMPANION(dev->parent) == data; } -static int spi_acpi_device_match(struct device *dev, const void *data) -{ - return ACPI_COMPANION(dev) == data; -} - static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev) { struct device *dev; @@ -3765,8 +3760,7 @@ static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev) { struct device *dev; - dev = bus_find_device(&spi_bus_type, NULL, adev, spi_acpi_device_match); - + dev = bus_find_device_by_acpi_dev(&spi_bus_type, adev); return dev ? to_spi_device(dev) : NULL; } diff --git a/include/linux/device.h b/include/linux/device.h index 93b2f55ef44e..7514ef3d3f1a 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -168,6 +168,7 @@ int device_match_name(struct device *dev, const void *name); int device_match_of_node(struct device *dev, const void *np); int device_match_fwnode(struct device *dev, const void *fwnode); int device_match_devt(struct device *dev, const void *pdevt); +int device_match_acpi_dev(struct device *dev, const void *adev); int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, int (*fn)(struct device *dev, void *data)); @@ -224,6 +225,28 @@ static inline struct device *bus_find_device_by_devt(struct bus_type *bus, return bus_find_device(bus, NULL, &devt, device_match_devt); } +#ifdef CONFIG_ACPI +struct acpi_device; + +/** + * bus_find_device_by_acpi_dev : device iterator for locating a particular device + * matching the ACPI COMPANION device. + * @bus: bus type + * @adev: ACPI COMPANION device to match. + */ +static inline struct device * +bus_find_device_by_acpi_dev(struct bus_type *bus, const struct acpi_device *adev) +{ + return bus_find_device(bus, NULL, adev, device_match_acpi_dev); +} +#else +static inline struct device * +bus_find_device_by_acpi_dev(struct bus_type *bus, const void *adev) +{ + return NULL; +} +#endif + struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id, struct device *hint); int bus_for_each_drv(struct bus_type *bus, struct device_driver *start, @@ -442,6 +465,27 @@ static inline struct device *driver_find_device_by_devt(struct device_driver *dr return driver_find_device(drv, NULL, &devt, device_match_devt); } +#ifdef CONFIG_ACPI +/** + * driver_find_device_by_acpi_dev : device iterator for locating a particular + * device matching the ACPI_COMPANION device. + * @driver: the driver we're iterating + * @adev: ACPI_COMPANION device to match. + */ +static inline struct device * +driver_find_device_by_acpi_dev(struct device_driver *drv, + const struct acpi_device *adev) +{ + return driver_find_device(drv, NULL, adev, device_match_acpi_dev); +} +#else +static inline struct device * +driver_find_device_by_acpi_dev(struct device_driver *drv, const void *adev) +{ + return NULL; +} +#endif + void driver_deferred_probe_add(struct device *dev); int driver_deferred_probe_check_state(struct device *dev); int driver_deferred_probe_check_state_continue(struct device *dev); @@ -620,6 +664,27 @@ static inline struct device *class_find_device_by_devt(struct class *class, return class_find_device(class, NULL, &devt, device_match_devt); } +#ifdef CONFIG_ACPI +struct acpi_device; +/** + * class_find_device_by_acpi_dev : device iterator for locating a particular + * device matching the ACPI_COMPANION device. + * @class: class type + * @adev: ACPI_COMPANION device to match. + */ +static inline struct device * +class_find_device_by_acpi_dev(struct class *class, const struct acpi_device *adev) +{ + return class_find_device(class, NULL, adev, device_match_acpi_dev); +} +#else +static inline struct device * +class_find_device_by_acpi_dev(struct class *class, const void *adev) +{ + return NULL; +} +#endif + struct class_attribute { struct attribute attr; ssize_t (*show)(struct class *class, struct class_attribute *attr,
Add a generic helper to match a device by the ACPI_COMPANION device and provide wrappers for the device lookup APIs. Cc: Len Brown <lenb@kernel.org> Cc: linux-acpi@vger.kernel.org Cc: linux-spi@vger.kernel.org Cc: Mark Brown <broonie@kernel.org> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: linux-i2c@vger.kernel.org Cc: Mark Brown <broonie@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/base/core.c | 6 ++++ drivers/i2c/i2c-core-acpi.c | 11 ++----- drivers/spi/spi.c | 8 +---- include/linux/device.h | 65 +++++++++++++++++++++++++++++++++++++ 4 files changed, 74 insertions(+), 16 deletions(-)