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| author |   Jeremy Kerr <jk@ozlabs.org> | 2017-02-01 10:53:43 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-10 15:19:48 +0100 |
| commit | dd37eed7db0f7607fa41887c11c1e428faa15d0c (patch) | |
| tree | 77f9408503ed7e2fb672dcfa88682bb2596e3a1c | |
| parent | drivers/fsi: Add device & driver definitions (diff) | |
| download | linux-dev-dd37eed7db0f7607fa41887c11c1e428faa15d0c.tar.xz linux-dev-dd37eed7db0f7607fa41887c11c1e428faa15d0c.zip | |
drivers/fsi: add driver to device matches
Driver bind to devices based on the engine types & (optional) versions.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Chris Bostic <cbostic@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/fsi/fsi-core.c | 21 | ||||
| -rw-r--r-- | include/linux/fsi.h | 21 |
2 files changed, 40 insertions, 2 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 3e45306359b3..3d55bd547178 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -19,8 +19,29 @@ /* FSI core & Linux bus type definitions */ +static int fsi_bus_match(struct device *dev, struct device_driver *drv) +{ + struct fsi_device *fsi_dev = to_fsi_dev(dev); + struct fsi_driver *fsi_drv = to_fsi_drv(drv); + const struct fsi_device_id *id; + + if (!fsi_drv->id_table) + return 0; + + for (id = fsi_drv->id_table; id->engine_type; id++) { + if (id->engine_type != fsi_dev->engine_type) + continue; + if (id->version == FSI_VERSION_ANY || + id->version == fsi_dev->version) + return 1; + } + + return 0; +} + struct bus_type fsi_bus_type = { .name = "fsi", + .match = fsi_bus_match, }; EXPORT_SYMBOL_GPL(fsi_bus_type); diff --git a/include/linux/fsi.h b/include/linux/fsi.h index f73886a5af01..273cbf6400ea 100644 --- a/include/linux/fsi.h +++ b/include/linux/fsi.h @@ -18,11 +18,28 @@ #include <linux/device.h> struct fsi_device { - struct device dev; + struct device dev; + u8 engine_type; + u8 version; }; +struct fsi_device_id { + u8 engine_type; + u8 version; +}; + +#define FSI_VERSION_ANY 0 + +#define FSI_DEVICE(t) \ + .engine_type = (t), .version = FSI_VERSION_ANY, + +#define FSI_DEVICE_VERSIONED(t, v) \ + .engine_type = (t), .version = (v), + + struct fsi_driver { - struct device_driver drv; + struct device_driver drv; + const struct fsi_device_id *id_table; }; #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev) |