staging: comedi: adl_pci9118: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: addi_apci_2032: document the spinlock_t definition

Add some comments to the private data tp quiet the checkpatch.pl
issue about:

CHECK: spinlock_t definition without comment

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>

staging: comedi: addi_apci_2032: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: ii_pci20kc: update the MODULE_DESCRIPTION

Change the MODULE_DESCRIPTION to something more useful than the
generic "Comedi low-level 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>

staging: comedi: ii_pci20kc: use comedi_offset_munge()

For aesthetics, use the helper function to handle the munging of the
analog output data from offset binary to 2's complement and the analog
input data from 2's complement to offset binary.

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>

staging: comedi: ii_pci20kc: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: dt9812: reword comments to fix checkpatch.pl issues

Reword the block comments to fix the checkpatch.pl issues about:

WARNING: Block comments use * on subsequent lines
WARNING: Block comments use a trailing */ on a separate line

For consistency, also reword the previous comments.

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>

staging: comedi: dt9812: rename F020_MASK_DACxCN_DACxEN

Rename this CamelCase define.

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>

staging: comedi: dt9812: tidy up multi-line comment

Reformat the multi-line comment in the kernel CodingStyle.

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>

staging: comedi: icp_multi: update the MODULE_DESCRIPTION

Change the MODULE_DESCRIPTION to something more useful than the
generic "Comedi low-level 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>

staging: comedi: icp_multi: remove board reset during (*detach)

The icp_multi_reset() function currnelt does the following during the
(*auto_attach) and (*detach) of this driver:

  1) disables all interrupts and clears any pending requests
  2) resets the analog output channels to 0V (0..5V range)
  3) sets all digital output channels to 0

Interrupts are not used by this driver so the disable/clear when
detaching is not necessary.

Depending on the use, reseting the analog and digital outputs when the
driver is detached might not be desireable.

Remove the board reset during the (*detach) and use comedi_pci_detach()
directly.

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>

staging: comedi: icp_multi: tidy up subdevice init

For aesthetics, add some whitespace to the subdevice initialization.

Remove the unnecessary initialization of the 'len_chanlist' for each
subdevice. That member is only used by subdevices that support async
commands.

Also, remove the initialzation of the dev->read_subdev. That member
is also only used for async command support.

Rename some of the subdevice functions to follow the normal format
used in comedi drivers.

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>

staging: comedi: icp_multi: remove counter subdevice

The support functions for this subdevice are not complete. Since the
counter is the last subdevice just remove it and it's allocation.

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>

staging: comedi: icp_multi: fix clock comment CodingStyle

Reword the block comment to fix a CodingStyle issue.

For aesthetics, also rename the icp_multi_ao_eoc() function. It's testing
for the analog output to be 'ready' not for an 'end-of-conversion'.

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>

staging: comedi: icp_multi: remove private data member 'DacCmdStatus'

This private data member isn't really needed. The two functions
that use it, icp_multi_ao_insn_write() and icp_multi_reset(), mask
any previous value before setting the bits. The masking just clears
the variable.

Refactor the code to not use the private data member. This also
removes the need for the private data so remove it's allocation
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>

staging: comedi: icp_multi: remove check_channel_list()

This function would only be needed in the driver supported async
commands. It's #if 0'ed out anyway so just 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>

staging: comedi: icp_multi: remove useless interrupt disable code

This driver does not use interrupts and all the interrupt source are
disabled by icp_multi_reset() when the board is first attached.

Remove the unnecessary, and useless, disable and clearing of interrupts
in the analog input and output (*insn_read) and (*insn_write) functions.

This also removes the need for the private data members 'IntEnable' and
'IntStatus'.

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>

staging: comedi: icp_multi: remove interrupt support

The interrupt handler in this driver doesn't do anything other than
read the interrupt status register. Since I can't locate a datasheet
for the board, remove the useless interrupt support 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>

staging: comedi: icp_multi: absorb setup_channel_list()

This function is only called in one place and the 'n_chan' parameter
is always 1. This makes the for() loop a bit silly.

Absorb the function into the caller and simplify the code. This also
removes the need for the private data member 'AdcCmdStatus'.

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>

staging: comedi: icp_multi: remove unused members from private data

These members are either not used at all or they are set but never
used. Just 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>

staging: comedi: icp_multi: remove unnecessary block comment

This comment doesn't add any value to the code. 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>

staging: comedi: icp_multi: rename static variable 'range_analog'

For aesthetics, rename this static variable so it has namespace
associated with the 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>

staging: comedi: icp_multi: tidy up the interrupt enable/status register bits

For aesthetics, rename these bit defines so they are associated with
the registers and use the BIT macro to define 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>

staging: comedi: icp_multi: tidy up the DAC command/status register bits

For aesthetics, rename these bit defines so they are associated with
the register and use the BIT macro to define 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>

staging: comedi: icp_multi: tidy up the ADC command/status register bits

For aesthetics, rename these bit defines so they are associated with
the register and use the BIT macro to define 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>

staging: comedi: icp_multi: tidy up multi-line comments

Reformat the multi-line comments in the kernel CodingStyle.

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>

staging: comedi: me_daq: fix me_ai_insn_read()

The comedi core expects (*insn_read) functions to return insn->n data
values. Refactor the function to work like the core expects. For
aesthetics, use the comedi_offset_munge() helper to munge the 2's
complement data.

This also fixes a minor issue when comedi_timeout() times out. Currently
this function just returns which leaves the ADC mode programmed for
software triggering. With the refactor the ADC mode is always disabled
when the function exits. This allows removing the unnecessary steps to
"stop any running conversions" at the start of the 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>

staging: comedi: me_daq: allow differential analog inputs

The ai (*insn_read) allows differential analog inputs but the subdevice
initialization is missing the SDF_DIFF subdev_flag to allow the user to
select this mode. Fix the subdevice init.

According to the manual, differential operation only works with the
first 8 channels and bipolar ranges. Add a check to the (*insn_read) to
ensure this.

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>

staging: comedi: me_daq: tidy up counter registers

For aesthetics, convert the counter registers into macros that take
the counter channel and return the correct register offset.

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>

staging: comedi: me_daq: tidy up dac data registers

For aesthetics, use a macro that takes the analog output channel
and returns the correct offset for the data register.

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>

staging: comedi: me_daq: use comedi_range_is_bipolar() helper

Use the helper function to determine if the dac bipolar bit needs
to be set.

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>

staging: comedi: me_daq: remove useless for() loop

This for() loop isn't needed. Nothing in the loop uses the 'i'
variable. 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>

staging: comedi: me_daq: tidy up dac control register defines

Redefine the dac control register bits as macros that take the
channel number and return the correct bit values.

This register needs to be read after the new values are written
in order to actually update the dac. For aesthetics, use the same
define to read and write the registers.

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>

staging: comedi: me_daq: tidy up ai fifo/chanlist register defines

Tidy up this register usage by defining some macros to set the channel
and gain bits. Add a define for the bit that enables differential mode.

Writing to this offset puts data in the ai chanlist fifo, reading from
it gets data from the ai data fifo. For aesthetics, use the same define
to read and write the registers.

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>

staging: comedi: me_daq: tidy up timer data register defines

For aesthetics, convert the register defines into a macro that takes
the timer channel and returns the correct register offset.

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>

staging: comedi: me_daq: tidy up digital i/o port register defines

For aesthetics, add a _REG suffix to these defines.

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>

staging: comedi: me_daq: tidy up status register defines

Rename the bits of this register so they have association with the
register. Use the BIT macro to define the bits.

Writing to the status register clears any pending interrupts. For
aesthetics, remove the ME_RESET_INTERRUPT define and just use the
ME_STATUS_REG define to write the register.

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>

staging: comedi: me_daq: tidy up control 2 register defines

Rename the bits of this register so they have association with the
register. Use the BIT macro to define the bits.

Reading the control 2 register updates the DAC registers. For
aesthetics, remove the MC_DAC_UPDATE define and just use the
ME_CTRL2_REG define to read the register.

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>

staging: comedi: me_daq: tidy up control 1 register defines

Rename the bits of this register so they have association with the
register. Use the BIT macro to define the bits.

Add a macro to select the ADC mode and remove the magic value used
to stop conversion.

Reading the control 1 register starts an analog input conversion.
For aesthetics, remove the MC_ADC_START define and just use the
ME_CTRL1_REG define to read the register.

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>

staging: comedi: me_daq: tidy up private data

For aesthetics, rename the local variable used to access dev->private.
In comedi drivers this variable is typically named 'devpriv'.

For aesthetics, rename the private data members used to mirror the
write-only register to, slightly, shorter names.

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>

staging: comedi: mf6x4: tidy up subdevice init

For aesthetics, add some whitespace to the subdevice initialization.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: change type of local variable

For aesthetics, change the type of this local variable to unsigned int.

This fixes the checkpatch.pl issue about:
CHECK: Prefer kernel type 'u32' over 'uint32_t'

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 60 +++++++++++++++++-----------------
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: refactor block comment

Refactor this block comment to fix the checkpatch.pl issues:
WARNING: Block comments use * on subsequent lines
WARNING: Block comments use a trailing */ on a separate line

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 2 +-
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: rename private data 'gpio_R'

Rename this CamelCase member of the private data.

For consistency, also rename the register defines associated with
this member.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 4 ++--
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: rename remaining BAR1 register defines

For consistency, rename the ADSTART and DAC register defines to add
a bit of clarity.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 16 ++++++++--------
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: rename the digital input register defines

For aesthetics, rename these defines to clarify them a bit.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 8 ++++----
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: remove unnecassary masking of digital outputs

THe 's->state' will always be in range for the 8 digital outputs.
Remove the unnecessary masking of the value.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 6 +++---
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: A/D converter uses 2's complement coding

According to the user's manual, the A/D converter uses 2's complement
coding. Use the comedi_offset_munge() helper to convert the data to
the offset binary format used by comedi.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 5 ++---
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: introduce a macro to select the AI channel

For aesthetics, use a macro to set the bit in the ADCTRL register that
selects an analog input channel.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 9 +++++----
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: sort the BAR1 register defines

For aesthetics, sort the defines in register order.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 10 +++++-----
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: remove unnecessary whitespace

For aesthetics, remove the extra whitespace and align all the register
defines.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 8 +++-----
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: remove unnecessary defines

The MF6X4_DAC_R macro defines the offsets for all the DAC registers.
Remove the unnecessary defines for each register.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 22 +++++++++++-----------
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: mf6x4: prefer using the BIT macro

Fix the checkpatch.pl issues.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 9 ---------
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: adv_pci1723: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: adv_pci1724: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: adl_pci6208: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: addi_apci_3xxx: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: addi_apci_3120: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: addi_apci_1032: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: 8255_pci: prefer using the BIT macro

As suggested by checkpatch.pl, use the BIT macro to define the
register bits.

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>

staging: comedi: fl512: usleep_range is preferred over udelay

Fix checkpatch.pl issue:

CHECK: usleep_range is preferred over udelay; see
       Documentation/timers/timers-howto.txt

Replace the udelay() with usleep_range() with a reasonable upper limit.

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>

staging: comedi: gsc_hpdi: use preferred kernel types

Fix the checkpatch.pl issues about:

CHECK: Prefer kernel type 'u32' over 'uint32_t'
CHECK: Prefer kernel type 'u8' over 'uint8_t'

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>

staging: comedi: ke_counter: prefer using the BIT macro

Use a macro to define the clock source options. This fixes the
checkpatch.pl issue about:

CHECK: Prefer using the BIT macro

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>

staging: comedi: mpc624: change type of private data 'ai_speed'

For aesthetics, change the type of this member to unsigned int.

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>

staging: comedi: mpc624: use tabs for whitespace instead of spaces

For aesthetics, use tabs instead of spaces for the whitespace in the
register defines.

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>

staging: comedi: mpc624: introduce mpc624_ai_get_sample()

Introduce a helper function to read the analog sample from the serially
connected A/D converter and handle the munging of the 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>

staging: comedi: mpc624: rename mpc624_ai_rinsn()

For aesthetics, rename this function to follow the normal convention
in comedi drivers.

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>

staging: comedi: mpc624: there are only 4 analog inputs

According to the datasheet, this board has 4 differential analog
input channels not 8. Fix the subdevice init.

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>

staging: comedi: mpc624: tidy up subdevice init

For aesthetics, add some whitespace to the subdevice init. Remove the
unnecessary switch() code used to set the maxdata and range_table.

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>

staging: comedi: mpc624: update MODULE_DESCRIPTION

Change the MODULE_DESCRIPTION to something more useful than the
generic "Comedi low-level 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>

staging: comedi: mpc624: tidy up the ai conversion speed code

Rename the CamelCase private data 'ulConvertionRate' and MPC624_SPEED_*
defines.

Create a macro to set the OSR bits that set the ai conversion speed and
use it for the various MPC624_SPEED_* defines. Remove the unnecessary
comment describing the speeds, this information is alread in the comedi
driver comment block.

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>

staging: comedi: mpc624: tidy up multi-line comments

Reformat the multi-line comments in the kernel CodingStyle.

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>

staging: comedi: pcl711: prefer using the BIT marco

Fix the checkpatch.pl issues.

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>

staging: comedi: pcl812: rename private data 'IRQbits'

Rename this CamelCase symbol.

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>

staging: comedi: pcl812: prefer using the BIT macro

Fix the checkpatch.pl issues.

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>

staging: comedi: pcl812: convert hardware type defines into an enum

For aesthetics, convert these defines into an enum and rename the
CamelCase. Fix the switch() code to use the enum without warnings.

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>

staging: comedi: pcl816: remove #if 0'ed out code

Remove the #if 0'ed out code that would initialize an analog output
subdevice.

The hardware does not normally support an analog output subdevice.
Analog outputs are only supported with additional "piggyback" modules.
Support for these modules is not included in the 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>

staging: comedi: pcl816: prefer using the BIT macro

Fix the checkpatch.pl issues.

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>

staging: comedi: pcl816: tidy up multi-line comments

Reformat the multi-line comments in the kernel CodingStyle.

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>

staging: comedi: pcl818: remove unused "boards constants"

These defines are not used. Remove them to get rid of the
checkpatch.pl issue about avoiding CamelCase.

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>

staging: comedi: pcl818: prefer using the BIT macro

Fix the checkpatch.pl issues.

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>

staging: comedi: multiq3: update the MODULE_DESCRIPTION

Change the MODULE_DESCRIPTION to something more useful than the
generic "Comedi low-level driver".

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: remove unnecessary include

This driver does not use interrupts. Remove the include.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up multiq3_encoder_insn_read()

Encoders are not a "normal" subdevice in comedi. For aesthetics, tidy
up this function and add a couple comments to clarify the function and
explain the strange munging of the data.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: remove unnecessary define

This define is not needed. Remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: allow user to reset encoder channels

Currently this driver resets all the encoder channels when the driver
is first attached. Add a (*insn_config) to the subdevice to allow the
use to reset the channels manually.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: document the encoder chip commands

Add some comments to document the commands that are sent to the
encoder chips.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up control register bit defines

For aesthetics, move these defines closer to the register define and
use the BIT macro to define the bits.

Add macros to set the bits needed to select the channel for the analog
output, analog input, and encoder (counter) subdevices as well as the
realtime clock registers.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: introduce multiq3_set_ctrl()

According to the programming manual. the 'SH' and 'CLK' bits in the
control register need to be kept high at all times. Clarify this by
introducing a helper function to set the control register.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up status register bit defines

For aesthetics, move these defines closer to the register define and
use the BIT macro to define the bits.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up register map defines

For auesthetics, rename the register map defines. Convert the offset
values to hex and add some whitespace.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up subdevice init

For aesthetics, add some whitespace to the subdevice init and rearrange
the initialization a bit.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up multiq3_ai_insn_read()

For aesthetics, use the proper symbol when reading the A/D data register
to get the 16-bit sample data.

Use the comedi_offset_munge() to do the 2's complement to offset binary
munging of the sample data.

Tidy up the function a bit.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: multiq3: tidy up multi-line comments

Reformat the multi-line comments in the kernel CodingStyle.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: quatech_daqp_cs: avoid calculating pacer divisor multiple times

The pacer will either be used to trigger each conversion or to start each
scan. Modify the (*do_cmdtest) so that one one divisor calculation is needed.
Save the divisor value in the private data so that the (*do_cmd) does not
have to do the calculation again.

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>

staging: comedi: quatech_daqp_cs: ai async command requires a pacer

The ai (*do_cmd) assumes that either the convert_src is TRIG_TIMER or
the scan_begin_src is TRIG_TIMER and always programs the pacer clock
with the appropriate trigger argument.

Add a Step 2b check to the (*do_cmdtest) to ensure that at least one
of the triggers is TRIG_TIMER.

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>

staging: comedi: quatech_daqp_cs: cleanup Step 3 of ai (*do_cmdtest)

Step 3 of the (*do_cmdtest) trivially validates the async command arguments.
The validations also modify the arguments if they are invalid so that the
user gets valid values if the test fails.

Reorder the checks so that if any of the checks fail proper values are
used for subsequent checks.

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>

staging: comedi: quatech_daqp_cs: fix daqp_ai_cancel()

Make sure interrupts are disabled and the event flags are cleared when
an analog input async command is canceled.

Remove the unnecessary calls to stop any running conversions in the
(*insn_read) and (*do_cmd) functions. The comedi core will only call
these functions if the subdevice is not busy (it has already been
canceled).

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>

staging: comedi: quatech_daqp_cs: handle shared interrupt

This is a PCMCIA driver and interrupts are always shared. Detect if
the hardware did not produce the interrupt and return IRQ_NONE so
that other drivers might handle 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>

staging: comedi: quatech_daqp_cs: remove 'interrupt_mode'

The interrupt handler is now only used for the ai async command.
Remove the unnecessary 'interrupt_mode' from the private data and
tidy up 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>