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All the boards supported by this driver have an 8254 timer at offset
0x0c. Remove this unused information from the boardinfo.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that the boardinfo does not require any forward declarations,
move it near the definition of the struct.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The timer is only started by the ai subdevice in das16_cmd_exec()
and this function can only be called if the device is attached.
Remove the unnecessary sanity check.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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For aesthetics, move some of the functions to make the code easier
to follow.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Factor out the loop that waits for the ai conversion to complete.
Tidy up the function a bit.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Introduce a couple helper functions to enable and disable the
analog input interrupt/dma conversions.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This is just extra cruft. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This variable is not used in the driver. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This define is not used in the driver. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If the boardinfo 'size' is > 0x400 it indicates that the board has
additional registers that allow bursting of analog input data.
To better indicate this add a flag to the private data.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As indicated by checkpatch.pl, "WARNING: Use of volatile is usually
wrong: ...". The variables in the private data that are marked
volatile don't need to be. Remove the volatile.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This macro outputs some printk() debug info that is just added noise.
Remove it as well as the DEBUG stuff.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This function just prints some development debug information. There is
no reason to leave this in the final driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These members in the private data are only used during the board attach.
Move the reading of the status register to the board attach and just
check the value where needed when initializing the analog input subdevice.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This struct is not used by the driver. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Cleanup the whitespace in the tables.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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All the boards supported by this driver that have analog outputs use
the same function to handle the (*insn_write) for the subdevice. They
all also have 12-bit resolution (maxdata = 0x0fff).
Remove the 'ao' and 'ao_nbits' members from the boardinfo and replace
them with a simple bit-field flag 'has_ao'.
Tidy up the subdevice init a bit as well as the (*insn_write) function.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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All the boards supported by this driver have digital outputs and all
of then use the same function to handle the (*insn_bits) for the
subdevice.
Remove the 'do_' member from the boardinfo and always initialize the
digital output subdevice during the board attach.
Tidy up the subdevice init a bit as well as the (*insn_bits) function.
Remove SDF_READABLE from the subdev_flags. This is a pure digital output
subdevice and the outputs are not readable.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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All the boards supported by this driver have digital inputs and all
of then use the same function to handle the (*insn_bits) for the
subdevice.
Remove the 'di' member from the boardinfo and always initialize the
digital input subdevice during the board attach.
Tidy up the subdevice init a bit as well as the (*insn_bits) function.
The (*insn_bits) function does not need to clear data[0].
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The subdevice functions that used this boardinfo can use the subdevice
's->maxdata' value instead. Tidy up those functions.
Change the boardinfo so that the calculation is not needed during the
attach.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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All the boards supported by this driver have analog inputs and all
of then use the same function to handle the (*insn_read) for the
subdevice.
Remove the 'ai' member from the boardinfo and always initalize the
analog input subdevice during the board attach.
Tidy up the subdevice init a bit.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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DMA support is optional in this driver. To enable it, the user
passes the desired DMA channel during the board attach. A timer
is then used by the driver to periodically get the analog input
data from the DMA.
Since the DMA support is optional, modify the init code so that
it only fails if the DMA channel is unavailable or the DMA buffers
can not be allocated. Don't fail just because the user passed an
invalid DMA channel (only DMA channels 1 and 3 are valid).
Remove the printk() noise about the DMA. Change the printk() when
the request_dma() fails into a dev_err().
Move the timer initialization so it's only setup if DMA is available.
It's not needed otherwise. Also, only hook up the subdevice command
support functions if DMA is available. This allows removing a couple
sanity checks in the command support.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As noted in the driver, a timer is always used by this driver to handle
the DMA because samples could be dropped while waiting for the DMA done
interrupt.
Remove the irq setup code as well as the interrupt handler.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As noted in the driver, a timer is always used by this driver to handle the
DMA due to buggy DMA controllers and the lack of a hardware fifo in some of
the supported boards.
Remove all the non-timer mode specific code.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove duplicated include.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We want these fixes here.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These functions are identical other than the which and how many urbs
are unlinked.
Consolidate the functions into one usbdux_unlink_urbs() function.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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For aesthetic reasons, move the defines used for the bulk transfer
commands out of the middle of the code and rename them so they are
a bit more readable.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This define is not used, and it's actually incorrect. The usbdux device
only has 4 analog output channels.
Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The 'dac_commands' buffer is used to pass the ao channel list from
usbdux_ao_cmd() to the urb callback, usbduxsub_ao_isoc_irq(). This
buffer does not need to be allocated.
Change it into a simple array of the correct size. Rename the variable
to 'ao_chanlist' to clarify what it actually is.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This check is not necessary. The cmd->chanlist_len will always be
less than or equal to the subdevice len_chanlist that was setup
during the attach of the device.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This check is not necessary. The cmd->chanlist_len will always be
less than or equal to the subdevice len_chanlist that was setup
during the attach of the device.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove the ugly casting of datap to the ao urb->transfer_buffer. The format
of the data in the buffer is simply.
[0] = # of channels to update (s->async->cmd.chanlist.len)
[1] = lsb of value for 1st channel to update
[2] = msb of value for 1st channel to update
[3] = 1st channel to update (depvriv->dac_commands[0])
If more than 1 channel is to be updated they are simply added to the buffer:
[4] = lsb of value for 2st channel to update
[5] = msb of value for 2st channel to update
[6] = 1st channel to update (depvriv->dac_commands[1])
etc.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This buffer is used to cache the values that are written to the
analog output channels. Currently it only caches the single writes
to the channels using the (*insn_write) callback. The async command
writes are not cached. The buffer is also being kzalloc'ed during
the attach of the driver to a size much larger that required.
Rename the CamelCase buffer and change it to an array in the private
data of the correct size to cache the analog output channel values.
Modify the analog output urb callback so it updates the cached values
with those used for the asynchronous command to allow readback after
the command completes.
The sanity check of the index to dac_commands[] (i.e. the 'chan' being
written) is not needed. The chanlist_len will always be less than the
number of channels.
Also, fix the dev_err() message so it uses the proper device pointer.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The usbdux and usbduxsigma drivers are _very_ similar. For aesthetic
reasons, rename the private data variables in this driver to match
the names in the usbduxsigma driver so we can start sharing the
common code.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use the comedi_range_is_bipolar() helper instead of checking the
'range' index against a magic number.
Also, use the s->maxdata to calculate the value needed to munge the
value for bipolar data instead of the magic number.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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For aesthetics, move this function closer to the (*auto_attach).
Also, rename some of the defined constants that are used by the
firmware upload.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These defines are not used by the driver. Remove them.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The endpoint defines are each only used in one place and don't help
clarify the code. Remove the defines and just open code the values.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use the stop helpers instead of duplicating the code in the detach.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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For aesthetic reasons, pass the comedi_device pointer to the unlink
helpers instead of the private data pointer.
All the unlink helpers simply call usb_kill_urb() to cancel any pending
transfer requests. The usb passed to usb_kill_urb() can be NULL so the
extra sanity check is not required.
The unlink helpers will always return success so just make them void
functions.
Since the stop helpers will also always return success, make them void
functions as well.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add the missing down/up of the semaphore to prevent other commands
from being issued to the usb device while the pwn is being stopped.
Rename the local variable used for the private data pointer to the
comedi "norm".
Use memset() to initialize the urb transfer buffer.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add the missing down/up of the semaphore to prevent other commands
from being issued to the usb device while the pwn is being stopped.
Rename the local variable used for the private data pointer to the
comedi "norm".
Make sure to check that usbdux_pwm_stop() was successful before
sending command to the usb device to stop the pwm.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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For aesthetic reasons, pass the comedi_device pointer to this function
instead of the private data pointer. Rename the local variable used
for the private data pointer to the comedi "norm".
Remove the unnecessary sanity check of the private data pointer. This
function can only be called is the private data was allocated during
the attach.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Comedi (*insn_write) operations are supposed to write insn->n values.
Fix this function to work like the core expects.
Rename the local variable used for the private data pointer to the
comedi "norm".
Remove the unnecessary sanity check of the private data pointer. This
function can only be called is the private data was allocated during
the attach.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Comedi (*insn_read) operations are supposed to read and return insn->n
values. Fix this function to work like the core expects.
Rename the local variable used for the private data pointer to the
comedi "norm".
Remove the unnecessary sanity check of the private data pointer. This
function can only be called is the private data was allocated during
the attach.
Tidy up the exit path using goto to ensure that the semaphore is
released.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rename the local variable used for the private data pointer to the
comedi "norm".
Remove the unnecessary sanity check of the private data pointer. This
function can only be called is the private data was allocated during
the attach.
Tidy up the exit path using goto to ensure that the semaphore is
released.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tidy up this function a bit.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rename the local variable used for the private data pointer to the
comedi "norm".
Remove the unnecessary sanity check of the private data pointer. This
function can only be called is the private data was allocated during
the attach.
Make sure an ao command is not already running and return -EBUSY.
Tidy up the exit path using goto to ensure that the semaphore is
released.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rename the local variable used for the private data pointer to the
comedi "norm".
Remove the unnecessary sanity check of the private data pointer. This
function can only be called is the private data was allocated during
the attach.
Tidy up the exit path using goto to ensure that the semaphore is
released.
Return -EBUSY instead if an ao command is already running.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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