Introduce a wrapper for to_pci_dev() to allow the comedi_pci_drivers
to store the pci_dev pointer in the comedi_device hw_dev variable and
retrieve it easily.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbot <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_COMEDI_PCI is not actually a Kconfig option. It is defined
in the comedidev.h header based on another Kconfig option being
enabled.
It is only referenced in the skel driver to conditionally compile
in the PCI support code. Use the CONFIG_COMEDI_PCI_DRIVERS Kconfig
option instead and remove the define.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_COMEDI_PCMCIA is not actually a Kconfig option. It is
defined in the comedidev.h header based on another Kconfig
option being enbled.
Just remove it since the define is not used by any of the comedi
drivers.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'io_bits' variable in the comedi_subdevice struct is a bitmask of
the input/output configuration of the the subdevice. It should be an
unsigned int to correctly represent this.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess: <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The n_subdevices variable of struct comedi_device is an int type.
Change the type of the comedi_alloc_subdevices 'num_subdevices' from
an unsigned int to an int to match it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbott@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move the inline alloc_subdevices() function from comedidev.h
to drivers.c and rename it to comedi_alloc_subdevices(). The
function is large enough to warrant being an exported symbol
rather than being an inline in every driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the private header, comedi_pci.h, by moving the two
helper functions into divers.c and providing the prototypes
in comedidev.h.
This allows the comedi_pci_enable/disable helper functions
to be shared instead of having an inline version in every
comedi pci driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1. Change the return type from int to void
All the detach functions, except for the comedi usb drivers, simply
return success (0). Plus, the return code is never checked in the
comedi core.
The comedi usb drivers do return error codes but the conditions can
never happen.
The first check is:
if (!dev)
return -EFAULT;
This checks that the passed comedi_device pointer is valid. The detach
function itself is called using this pointer so it MUST always be valid
or there is a bug in the core:
if (dev->driver)
dev->driver->detach(dev);
And the second check:
usb = dev->private;
if (!usb)
return -EFAULT;
The dev->private pointer is setup in the attach function to point to the
probed usb device. This value could be NULL if the attach fails. But,
since the comedi core is going to unload the driver anyway and does not
check for errors there is no gain by returning one.
After removing these checks from the comedi usb drivers the detach
functions required a bit of cleanup.
2. Remove all the printk noise in the detach functions
All of the printk output is really just noise. The user did a rmmod to
unload the driver, we really don't need to tell them about it.
Also, some of the messages are output using:
dev_dbg(dev->hw_dev, ...
or
dev_info(dev->hw_dev, ...
Unfortunately the hw_dev value is only used by drivers that are doing
DMA. For most drivers this variable is going to be NULL so the output
is not going to work as expected.
3. Refactor a couple static 'free_resource' functions into the detach
functions.
The 'free_resource' function is only being called by the detach and it
makes more sense to just absorb the code.
4. Remove a couple unnecessary braces for single statements.
5. Remove unnecessary comments.
Most of the comedi drivers appear to be based on the comedi skel driver
and have the comments from that driver included. These comments make
sense in the skel driver for reference but they don't need to be in any
of the actual drivers.
6. Remove all the extra whitespace.
It's not needed to make the functions any more readable.
7. Remove the now unused 'attached_successfully' variable in the
cb_pcimdda driver.
This variable was only used to conditionally output some driver noise
during the detach. Since all the printk's have been removed this
variable is no longer necessary.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce the module_comedi_usb_driver macro, and the
associated register/unregister functions, which is a
convenience macro for comedi usb driver modules similar
to module_platform_driver. It is intended to be used by
drivers where the init/exit section does nothing but
register/unregister the comedi driver and associated usb
driver. By using this macro it is possible to eliminate
a few lines of boilerplate code per comedi usb driver.
Also, when registering the usb driver check for failure
and unregister the comedi driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce the module_comedi_pci_driver macro, and the
associated register/unregister functions, which is a
convenience macro for comedi pci driver modules similar
to module_platform_driver. It is intended to be used by
drivers where the init/exit section does nothing but
register/unregister the comedi driver and associated pci
driver. By using this macro it is possible to eliminate
a few lines of boilerplate code per comedi pci driver.
Add a check to make sure that the pci_driver->name is
set. Once all the comedi pci drivers have been fixed this
will be removed.
Also, when registering the pci driver check for failure
and unregister the comedi driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce the module_comedi_driver macro which is a convenience
macro for comedi driver modules similar to module_platform_driver.
It is intended to be used by drivers where the init/exit section
does nothing but register/unregister the comedi driver. By using
this macro it is possible to eliminate a few lines of boilerplate
code per comedi driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This helper function is used to fetch the comedi_device board_ptr
which is used during the attach to pass board specific information
to the comedi drivers.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Comedi auto-configuration mechanism used to bind hardware devices to
comedi devices automatically is pretty kludgy. It fakes a "manual"
configuration of the comedi device as though the COMEDI_DEVCONFIG ioctl
(or the 'comedi_config' utility) were used. In particular, the
low-level comedi driver's '->attach()' routine is called with a pointer
to the struct comedi_device being attached and a pointer to a 'struct
devconfig' containing a device name string and a few integer options to
help the attach routine locate the device being attached. In the case
of PCI devices, these integer options are the PCI bus and slot numbers.
In the case of USB devices, there are no integer options and it relies
more on pot luck to attach the correct device.
This patch adds a couple of bus-type-specific attach routine hooks to
the struct comedi_driver, which a low-level driver can optionally fill
in if it supports auto-configuration.
A low-level driver that supports auto-configuration of {PCI,USB} devices
calls the existing comedi_{pci,usb}_auto_config() when it wishes to
auto-configure a freshly probed device (maybe after loading firmware).
This will call the new '->attach_{pci,usb}()' hook if the driver has
defined it, otherwise it will fall back to calling the '->attach()' hook
as before. The '->attach_{pci,usb}()' hook gets a pointer to the struct
comedi_device and a pointer to the struct {pci_dev,usb_interface} and
can figure out the {PCI,USB} device details for itself.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The comedi_usb_auto_config() and comedi_usb_auto_unconfig() functions
currently take a 'struct usb_device *'. It makes more sense to pass a
'struct usb_interface *' to allow for composite USB devices.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
comedi_auto_config() associates a Comedi minor device number with an
auto-configured hardware device and comedi_auto_unconfig() disassociates
it. Currently, these use the hardware device's private data pointer to
point to some allocated storage holding the minor device number. This
is a bit of a waste of the hardware device's private data pointer,
preventing it from being used for something more useful by the low-level
comedi device drivers. For example, it would make more sense if
comedi_usb_auto_config() was passed a pointer to the struct
usb_interface instead of the struct usb_device, but this cannot be done
currently because the low-level comedi drivers already use the private
data pointer in the struct usb_interface for something more useful.
This patch stops the comedi core hijacking the hardware device's private
data pointer. Instead, comedi_auto_config() stores a pointer to the
hardware device's struct device in the struct comedi_device_file_info
associated with the minor device number, and comedi_auto_unconfig()
calls new function comedi_find_board_minor() to recover the minor device
number associated with the hardware device.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The comedi_pci_auto_config() and comedi_usb_auto_config() functions
currently take a board name parameter which is actually a driver name
parameter. Replace it with a pointer to the struct comedi_driver. This
will allow comedi_pci_auto_config() and comedi_usb_auto_config() to call
bus-type-specific auto-configuration hooks in the struct comedi_driver
if they exist (they don't yet). The idea is that these
bus-type-specific auto-configuration hooks won't have to search the bus
for the device being auto-configured like 'attach()' hook has to.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is no longer needed as the code is now in the main kernel tree.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Move the PCI devinit/devexit routines to the respective C source files
instead of calling COMEDI_PCI_INITCLEANUP
Signed-off-by: Arun Thomas <arun.thomas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Move the init/exit routines to the respective C source files
instead of calling COMEDI_INITCLEANUP
Signed-off-by: Arun Thomas <arun.thomas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add MODULE_AUTHOR, MODULE_LICENSE, and MODULE_DESCRIPTION calls
to the respective C source files instead of calling COMEDI_MODULES_MACRO
Signed-off-by: Arun Thomas <arun.thomas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Some comedi drivers should return an error from their 'open' method when
something goes wrong. Change the prototype of the 'open' method in
'struct comedi_device' to allow this, and change the drivers that use it.
Propagate any error to the 'open' file operation.
The corresponding 'close' method won't be called when the 'open' method
fails, so drivers failing the 'open' need to clean up any mess they
created.
The dt9812 and serial2002 drivers can now return an error on 'open'.
The jr3_pci driver also uses the 'open' method but doesn't fail it.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes a long line length in comedidev.h to make checkpatch.pl happy
Signed-off-by: Mark Rankilor <reodge@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix up some sparse issues in drivers.c
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Only the internal comedi core calls these, so put them here.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
No one outside of the comedi core calls this function, so don't export
it to the world.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
No one outside of the comedi core calls this function, so don't export
it to the world.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
No one outside of the comedi core calls this function, so create
an internal.h file to put the prototype in, and don't export
it to the world.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
No one calls this anymore, except the core comedi code, so
mark it static and don't export it.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
It's a global function, so properly name it and move the
export to where the function is located at.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Don't redefine something that we already have in the core
kernel. Also move to use PCI_DEVICE() macros to make things
a bit simpler when changing the define.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This resolves some coding style issues in comedidev.h
And yes, volatile here meant nothing, removing it is ok.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lindent changes to comdi driver in staging tree.
This patch is followed by the checkpatch.pl error fixes.
Did not make them part of this patch as the patch size is already huge.
Signed-off-by: Mithlesh Thukral <mithlesh@linsyssoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Some of the comedi drivers need timer.h to build properly, so put it
in the comedidev.h file to fix these errors.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
comedi driver(s) use udelay() so they need to #include delay.h.
drivers/staging/comedi/drivers/adq12b.c: In function 'adq12b_ai_rinsn':
drivers/staging/comedi/drivers/adq12b.c:328: error: implicit declaration of function 'udelay'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This removes some pieces of RT code that was part of the main code
paths.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This removes the unused RT code from the comedi subsystem.
A lot of drivers needed to then include interrupt.h on their own, as they
were picking it up through the comedi_rt.h inclusion.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The comedi drivers are looking for CONFIG_COMEDI_PCI and
CONFIG_COMEDI_PCMCIA, not the current config items. This creates a
define so that things build properly when these options are selected.
Long term goal is to fix up the drivers to not need any defines.
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove interrupt wraparound. Use defines from linux/interrupt.h
instead.
Change also parameter types of functions taking ISR to irq_handler_t.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: David Schleef <ds@schleef.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
H Hartley Sweeten