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| author | Ian Abbott <abbotti@mev.co.uk> | 2012-10-27 20:44:14 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-29 22:02:08 (GMT) |
| commit | 8ed705aff0652fdbd2c6b406155d7d480e1aabe0 (patch) | |
| tree | 565fd8ab2bb905f209e0a5e21a2c98a7621a1ab6 /drivers/staging/comedi/comedidev.h | |
| parent | 156096a0398fd5c42beeed87ad9b79134d890d22 (diff) | |
| download | linux-fsl-qoriq-8ed705aff0652fdbd2c6b406155d7d480e1aabe0.tar.xz | |
staging: comedi: add generic auto-config functions
Add (and export) generic auto-config function `comedi_auto_config()` to
allow hardware devices on arbitrary bus types (e.g. platform devices,
spi devices, etc.) to be auto-configured as comedi devices. This uses a
new `auto_attach()` hook in the `struct comedi_driver`. This new hook
will eventually replace the bus-specific `attach_pci()` and
`attach_usb()` hooks in the low-level comedi drivers.
When the `auto_attach()` hook is called in the low-level driver, the
`hw_dev` member of the `struct comedi_device` will have already been set
to the hardware device passed to `comedi_auto_config()`. The low-level
driver can convert this to some bus-device wrapper structure pointer,
possibly with the help of the `context` parameter that is passed
unchanged from the `comedi_auto_config()` call.
Also export the existing `comedi_auto_unconfig()` function as the
matching call to `comedi_auto_config()`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedidev.h')
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index d9f2b8b..2b884a6 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -204,6 +204,7 @@ struct comedi_driver { void (*detach) (struct comedi_device *); int (*attach_pci) (struct comedi_device *, struct pci_dev *); int (*attach_usb) (struct comedi_device *, struct usb_interface *); + int (*auto_attach) (struct comedi_device *, unsigned long); /* number of elements in board_name and board_id arrays */ unsigned int num_names; @@ -510,6 +511,9 @@ static inline void *comedi_aux_data(int options[], int n) int comedi_alloc_subdevice_minor(struct comedi_device *dev, struct comedi_subdevice *s); void comedi_free_subdevice_minor(struct comedi_subdevice *s); +int comedi_auto_config(struct device *hardware_device, + struct comedi_driver *driver, unsigned long context); +void comedi_auto_unconfig(struct device *hardware_device); int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver); void comedi_pci_auto_unconfig(struct pci_dev *pcidev); |