staging: comedi: me_daq: all boards have the same analog input specs
All the boards supported by this driver have the same analog input
specifications. Remove the unnecessary boardinfo and just open-code
the values in the subdevice initialization.
The boards also share the same analog input range capabilities. Remove
one of the duplicate tables and rename the other to make it common for
all board types.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: me_daq: cleanup the copyright and comedi comments
Reformat the copyright and driver description comments to follow the
preferred block comment style. Reword the driver description to follow
comedi style described in the skel driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This function is supposed to write to a single analog output channel.
The channel number is packed in insn->chanspec, which is an unsigned
int, and unpacked using the CR_CHAN() macro.
Currently this function is trying to use the chanspec as an array.
This works only if a single value is written.
Fix the function so that the desired channel is determined and all
the data is written to that channel.
Also, fix the return. The comedi core expects insn_read functions to
return the number of data values (insn->n).
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This function is supposed to return the analog output value for
a specified channel. The channel number is packed in insn->chanspec,
which is an unsigned int, and unpacked using the CR_CHAN() macro.
Currently this function is trying to use the chanspec as an array.
This works only if a single data value is read.
Fix the function so that the desired channel is determined and all
the data returned is from that channel.
Also, fix the return. The comedi core expects insn_read functions to
return the number of data values (insn->n).
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: me_daq: remove pci_dev_put() in detach
This driver uses the comedi auto config mechanism and does not
walk the pci bus to find the pci_dev. It should not be calling
pci_dev_put() to decrement the ref count.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: me_daq: factor out the PLX bug workaround
Factor out the code in me_attach_pci() that handles the PLX-Bug
workaround to a separate function.
This looks odd. It appears that the bug workaround either swaps
PCI bars 0 and 5 or it modifies PCI bar 0. Shouldn't this happen
before PCI bar 0 is ioremap'ed?
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: me_daq: replace 'result' and 'error' with 'ret'
Two local variables are used in me_attach_pci() to check for errors
when calling other functions, 'result' and 'error'. Remove both of
them and just use a common 'ret' variable.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: me_daq: cleanup ioremap of PCI bar 2
PCI bar 2 is the main i/o address for this driver. Currently the
pci_resource_len of the bar is stored in the private data but
it is never used.
Remove 'me_regbase_size' from the private data. Also, remove the
local variables used for the pci_resource_start and _len. Just
pass the values directly to the ioremap().
Remove the kernel noise when the ioremap fails.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: me_daq: fix pointer dereference in me_detach()
As pointed out by Dan Carpenter, dev_private could be NULL when it
is checked before calling comedi_pci_disable(). The private data
variable 'plx_regbase_size' is only used to see if the pci device
has been enabled.
Remove that variable from the private data and just use the unused
dev->iobase variable to let the detach know that the pci device
is enabled.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: dt3000: change return type of dt3k_send_cmd to void
None of the callers check the return value. Just make it a void.
Flip the status check at the end of the function to check for an
error before outputing the dev_dbg(). Use __func__ for the function
name in the message.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Devendra Naga [Thu, 25 Oct 2012 05:50:58 +0000 (01:50 -0400)]
staging: csr: remove panic at locking the mutex
when down_interruptible fail, means a signal occur, or any other failure
we are panicing, and it seems that we should not panic, instead we would
have done a spinlock, but currently removing the panic call.
Fabio Estevam [Wed, 24 Oct 2012 23:36:46 +0000 (21:36 -0200)]
staging: ipu-v3: ipu-common: Make it less verbose
IPU Interrupt numbers and the various IPU submodules base addresses are
more interesting for debugging purposes rather than normal use, so use
dev_dbg instead.
Kees Cook [Tue, 23 Oct 2012 20:02:06 +0000 (13:02 -0700)]
drivers/iio/dac: remove CONFIG_EXPERIMENTAL
This config item has not carried much meaning for a while now and is
almost always enabled by default. As agreed during the Linux kernel
summit, remove it.
CC: Jonathan Cameron <jic23@cam.ac.uk> CC: Lars-Peter Clausen <lars@metafoo.de> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> CC: Michael Hennerich <michael.hennerich@analog.com> CC: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The PCI chip used on this board is from PLX Technologies Inc. As stated
in the comments of this driver, Dynalog does not have a registered PCI
vendor id so this board uses the PLX vendor id. The kernel provides an
id for that vendor in pci_ids.h (PCI_VENDOR_ID_PLX). Use it instead of
creating a duplicate with a different name.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rename the define used for the D/A Data register so that is has
namespace with this driver. Change the define so that it takes
the channel as a parameter to calculate the correct register
offset.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: cb_pcidda: cleanup the copyright and comedi comments
Reformat the copyright and driver description comments to follow the
preferred block comment style. Reword the driver description to follow
comedi style described in the skel driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: cb_pcidda: cleanup the analog output range
All the boards supported by this driver have the same analog output
ranges. Remove the 'range' from the boardinfo and just use the
'cb_pcidda_ranges' directly when initializing the subdevice.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: cb_pcidda: check for subdev_8255_init() failure
The subdev_8255_init() can fail, make sure to check for it.
This board has two 8255 subdevices, one at iobase PCI bar2 and one
at iobase PCI bar2 + 4. Init the subdevices using a for() loop to
make the code a bit more concise.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: cb_pcidda: remove private data variable 'digitalio'
The private data variable 'digitalio' is only used to hold the PCI
base address for the 8255 devices on the board. This value is then
passed to subdev_8255_init() and stored in it's own private data.
There is no need to keep the value in the private data for the board.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: cb_pcidda: remove code in #if 0/#endif blocks
The functions cb_pcidda_ai_cmd(), cb_pcidda_ai_cmdtest(), and
cb_pcidda_ns_to_timer() are all partially coded stubs for command
support with the analog output subdevice. Just remove the code
since it is #if 0'ed out. It can be added back later if command
support is completed.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the prompt line and description for the COMEDI_AMPLC_DIO200_PCI
config option to add the new PCIe boards supported by the "amplc_dio200"
driver.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:13 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: support multiple read/write of counter
Change the `insn_read` and `insn_write` handlers of the '8254' counter
subdevices to support reading and writing multiple data values.
(Writing multiple values isn't very useful, but if that's what the user
wants....)
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:08 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: allow extra clock and gate sources
One of the enhancements of the new PCIe boards is the addition of extra
clock and gate sources. Allow clock and gate sources up to 31 for these
boards (compared to 7 for the old boards) although most of those are
reserved for future use.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:07 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: enable enhanced features of PCIe boards
The new PCIe boards PCIe215, PCIe236 and PCIe296 have some enhanced
features (over the older boards), although none of these features are
supported by this driver yet.
Enable the enhanced features in hardware and use `dio200_layouts[]` to
indicate which boards support the enhanced features.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:06 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: allow generation of PCIe interrupts
The new PCIe boards PCIe215, PCIe236 and PCIe296 need a special register
setting to allow generation of interrupts on the PCIe bus. Add
`dio200_pcie_board_setup()` to do this and call it from
`dio200_attach_pci()` for those boards.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:05 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: support PCIe215, PCIe236 and PCIe296
Add preliminary support for the above PCIe boards. The interrupt
subdevice is not working yet as the boards need some additional
initialization to enable interrupts. Reserve an unused subdevice that
will eventually become a timer subdevice.
Some unused subdevices have been added between the used subdevices on
the PCIe215 and PCIe236. This is so the subdevice numbers will match a
pattern-matching feature to be added at a later date, where the
pattern-match specifications for a subdevice include pattern-match
results from other subdevices, specified by index.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:04 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: add register shift to board info
Add `mainshift` member to `struct dio200_board` to hold the amount of
left-shift required for main register offsets. This is 0 for all the
boards currently supported so it doesn't need initializing explicitly in
any current element of `dio200_boards[]`. It will be non-zero for some
new boards to be supported by this driver.
Modify the register access functions `dio200_read8()` and
`dio200_write8()` to take the shift into account.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:03 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: add min register region size in board
Store the length of the main register region in new member `mainsize` of
`struct dio200_board` and initialize it in each element of
`dio200_boards[]`. For all currently supported boards this is
initialized to `DIO200_IO_SIZE` (0x20), but will be different for newer
boards to be supported in the future.
For ISA boards, this is the actual region length requested, but for PCI
boards it's the minimum expected region length. Verify that the PCI BAR
region length is sufficient in `dio200_attach_pci()`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:02 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: add PCI BAR information to board
Add `mainbar` member to `struct dio200_board` to hold the PCI BAR number
for the main registers. This is `2` for the PCI boards currently
supported (PCI215 and PCI272) but will be different for some new boards
to be supported later.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:01 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: support memory-mapped I/O
The boards currently supported by this module all use port I/O. Support
memory-mapped I/O as well for future PCI/PCIe cards.
Define `struct dio200_region` to hold the type of register access and
either the port I/O base address or an ioremapped MMIO address. Add a
member `io` to the comedi device private data (`struct dio200_private`)
to hold this. Use this instead of `dev->iobase`. Memory-mapped
registers are mapped in `dio200_pci_attach()` and unmapped in
`dio200_detach()`.
`dio200_detach()` now uses the private data pointer `devpriv` set to
`dev->private` but can return early if it is `NULL` because no clean-up
needs to be done in that case.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:48:00 +0000 (16:48 +0100)]
staging: comedi: amplc_dio200: set dev->iobase before common attach
Don't pass the I/O base address to `dio200_common_attach()`. The only
thing it does with it is set `dev->iobase` to the passed in value. Do
that before calling `dio200_common_attach()` in order to simplify
upcoming support for different register access methods.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:47:59 +0000 (16:47 +0100)]
staging: comedi: amplc_dio200: use custom register access functions
Add custom functions to access hardware registers and call them instead
of calling `inb()` and `outb()` directly. When additional cards are
supported by this driver requiring different register access methods,
the new functions will localize the register access differences to just
these functions.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "amplc_dio200" module no longer depends on the "8255" module, so the
'COMEDI_AMPLC_DIO200' Kconfig setting no longer needs to select
'COMEDI_8255'.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Wed, 24 Oct 2012 15:47:57 +0000 (16:47 +0100)]
staging: comedi: amplc_dio200: internalize 8255 DIO implementation
Implement the '8255' DIO subdevice internally to this module instead of
using the external "8255" module. I plan to add support for additional
cards to this driver that would require the I/O callback functionality
of the 8255 module, but the existing callback functions do not have much
context to handle this elegantly. The additional cards also have extra
DIO features which cannot be handled by the existing "8255" module and
that I'd like to support some time in the future.
The bottom line is I _could_ continue using the "8255" module for a
while with a callback function, but it would turn out to be a very ugly
callback function and I'd have to ditch the use of the "8255" module as
soon as I added an extra feature to the DIO subdevice.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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