Convert the register defines to hex and the register bit defines
to bit shifts.

Rename the CSR register bit defines to help document them and move
them so they are associated with the register.

Rename the RTI800_SIZE define to RTI800_IOSIZE.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Update the MODULE_DESCRIPTION to better describe the driver.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Cleanup the multi-line comments at the beginning of the file to follow
the kernel CodingStyle.

Remove the comments before rt1800_attach(). They are a duplicate of
the "Configuration Options" in the Comedi comment block at the start
of the file.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This driver is the only file that includes the am9513.h header and
nothing from that header is actually used. Using the macros provided
by am9513.h is a bit ugly due to having to predefine a number of
additional macros to handle the low-level I/O to the Am9513 device.

Just remove the header and the unused I/O helpers in the rti800
driver. If support for the am9513 is added later it wil be implemented
properly at that time.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The comedi core expects the (*insn_read) functions to return the
number of data values actually read. Change the return from 'i'
to 'insn->n' to make this clearer.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The (mask & val) operation when reading the high 4-bits of the analog
data looks strange. Change it to (val & mask).
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The analog input on this board can return data as either two's
complement or straight binary data. The format is selected by a
jumper of the board and enabled by the user as option[4] when
attaching to the board.

Replace the adc_coding enum with a simple bool to indicate that
the data is returned in two's complement form.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Factor the timeout loop that waits for the ai conversion to complete
out of rti800_ai_insn_read().
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Refactor the code that determines the 'delay' after setting the muxgain
register to remove the BUG_ON().

Change the private data 'muxgain_bits' to an unsigned char, the muxgain
register is only 8-bits.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The insn->chanspec passed to the CR_{CHAN,RANGE} macros is an unsigned
int. For aesthetic reasons, put the result of the macros into an
unsigned int local var.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, tidy up the parameters passed to this function.

The comedi core expects (*insn_read) functions to return the number
of data values actually read (insn->n). Change the return to make
clearer.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This board has two independent analog output channels. Each channel
has its own 12-bit D.A converter. Each channel can be set to output
a unipolar 10V or bipolar 10V signal. This selection is handled by
a jumper on the board and configured by the user with options[5] and
[7] passed during the attach of the board.

The two channels can also be configured with jumpers to use straight
binary or two's complement data. The user configures the data type
with options[6] and [8] when attaching.

Currently, this driver uses the dac0 selection, option[6], for both
channels. Fix the rti800_ao_insn_write() function to properly use
the configuration specified by the user.

Change the dac[01]_coding in the private data to a simple bool
array, dac_2comp.

Add some local vars to hold the registers offsets needed to write
to the DAC.

Only the last value written to the DAC needs to be cached for readback,
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, tidy up the parameters passed to this
function.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

To clarify the function a bit, add local variables for the 'mask'
and 'bits', passed by the comedi core, used to update the digital
outputs.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, add some whitespace to the subdevice init
to make it more readable.

Remove the commented out init of subdevice 4, it's not allocated.
Add a comment about it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The analog in/analog out ranges are selected by the user using options
passed during the legacy attach. Put the valid ranges into arrays and
use those instead of the switch () statements when initializing the
subdevice range information.

If the passed user option is not valid, set the range information to
range_unknown.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The 'dac[01]_range' is only used in the attach of the board. Remove
it from the private data.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The 'adc_range' is only used in the attach of the board. Remove it
from the private data.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The 'adc_mux' is only used in the attach of the board. Remove it
from the private data.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, move the call to comedi_alloc_subdevices()
so it occurs right before the subdevice init.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Interrupts are not enabled, or used, in this driver. Remove the
{request,free}_irq() as well as the dummy interrupt function.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The comedi core initializes the dev->board_name before calling the
driver (*attach) function. There is not reason to reinitialize it
in the driver.

Use the dev->board_name when doing the request_{region,irq}() instead
of the open-coded string.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The printk's during the bard attach are just added noise. Remove
them.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the debug noise that outputs the board 'fingerprint' during
the attach.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the boardinfo data that is set to '0', this is the default.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, move the boardinfo table near the struct
definition. Reformat the boardinfo in C99 format and add some
whitespace to help readability.

Rename the boardinfotable so it has namespace associated with
the driver.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This forward declaration is not needed.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Cleanup the whitespace in the comedi_lrange tables.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Update the MODULE_DESCRIPTION to better describe the driver.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Use a local variable to hold the base register, 'reg', that is used
to read from the device.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Use a local variable to hold the base register, 'reg', that is used
to write to the relays.

Add local variables for the 'mask' and 'bits' values used to update
the relays.

The relays only need to be updated if the 'mask' is set. Move the outb()
calls into the if (mask) to make this clearer.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, and to help with greps, rename the (*insn_bits)
functions in this driver.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, add some whitespace to the subdevice init
to make it more readable.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This driver does not use interrupts and the dev->irq variable is
already set to '0' when then (*attach) function is called. Setting
it in the driver is unnecessary.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The 'iorange' local variable is only used in the request_region()
call. Remove the variable and just use the board->io_range directly.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The comedi core initializes the dev->board_name before calling the
driver (*attach) function. There is not reason to reinitialize it
in the driver.

Use the dev->board_name when doing the request_resource() instead
of the open-coded string.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The printk's during the board attach are just added noise. Remove
them.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, move the boardinfo table near the struct
definition. Remove the unnecessary comments in the struct definition.
Reformat the boardinfo in C99 format and add some whitespace to
help readability.

Rename the boardinfo struct and the boardinfo table so they have
namespace associated with the driver.

Remove the ACL7225_SIZE and P16R16DIO_SIZE defines. They are only
used in the boardinfo table and the open-coded values provide the
information more clearly.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This driver adds support for the Television Encoder integrated
on i.MX53 SoCs (TVEv2).

Currently only the VGA output mode is supported, which only uses
the TVDAC to generate RGB levels. HSYNC and VSYNC signals are
routed directly from the IPU signal generator pins through IOMUXC.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>