IPUv3 has a total of 3 flows (one synchronous flow and 2 asynchronous flows).

Let's add a definition for such number in order to let the code easier to
understand.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No need to have braces for a single line 'if' block
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

devm_kzalloc() may fail, so let's check its return value.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

When building imx_v6_v7_defconfig with imx-drm drivers selected as modules, we
get the following build error:

ERROR: "imx_drm_encoder_get_mux_id" [drivers/staging/imx-drm/imx-ldb.ko] undefined!

Export the required function to avoid this problem.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sparc64 allmodconfig:

drivers/staging/comedi/drivers/addi_apci_2032.c: In function 'apci2032_auto_attach':
drivers/staging/comedi/drivers/addi_apci_2032.c:328:3: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration]
drivers/staging/comedi/drivers/addi_apci_2032.c:328:11: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/staging/comedi/drivers/addi_apci_2032.c: In function 'apci2032_detach':
drivers/staging/comedi/drivers/addi_apci_2032.c:350:3: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]

drivers/staging/comedi/drivers/amplc_pci224.c: In function 'pci224_attach_common':
drivers/staging/comedi/drivers/amplc_pci224.c:1289:2: error: implicit declaration of function 'kmalloc' [-Werror=implicit-function-declaration]
drivers/staging/comedi/drivers/amplc_pci224.c:1289:23: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/staging/comedi/drivers/amplc_pci224.c:1296:24: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/staging/comedi/drivers/amplc_pci224.c:1303:25: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/staging/comedi/drivers/amplc_pci224.c:1348:42: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/staging/comedi/drivers/amplc_pci224.c: In function 'pci224_detach':
drivers/staging/comedi/drivers/amplc_pci224.c:1474:3: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]

Introduced by commit 0bdab509 ("staging:
comedi: use comedi_alloc_devpriv()"), which removed some inclusions of
<linux/slab.h>.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Tidy up the multi-line comments at the beginning of the file and
remove any irrelevant information.

Fix the II20K_ID_PCI200341M_1 define, there are one to many 0's.

Rename all the remaining pci20xxx_* to ii20k_*. The "pci" just adds
confusion, this is not a PCI board.

Remove the private (*detach) function. It's safe to call the comedi
core provided comedi_legacy_detach() even if there is nothing to
cleanup.
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>

The PCI-200341M-1 module can both provide an analog input subdevice
in this driver. The module provides four differential input channels
with four programmable gains.

Currently the gain is configured as an option passed when the board
is attached. Rewrite the ai subdevice support functions to properly
handle the programmable gain.

For aesthetics, redefine the memory map for the module.
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>

The PCI-20006M-1 and PCI-20006M-2 modules can both provide an
analog output subdevice in this driver. Fix the module init code
to detect both of them.

The analog output can support +/-5, 0-10, or +/-10 volt ranges
depending on jumpers on the board. Report all the ranges to the
user instead of relying on the configuration options to set the
range. The user can then select the appropriate range depending
on how they have configured the hardware.

Tidy up the (*insn_{read,write})() functions to work like the
comedi core expects.
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>

The union used for the subdevice private data just adds confusion.
Split the union into two separate private data structs.
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>

The 'iobase' can be calculated when needed. Remove it from the
subdevice private data.
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>

Use the carrier board id to determine if a module is installed for
a given subdevice.

Consolidate the module init code into ii20k_init_module().

For aesthetic reasons, rename the subdevice functions to remove
'pci' from them.
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>

For asethetics, redefine the register map for the carrier board.
The 'PCI*' names lead one to think this is a PCI board not a
legacy ISA board.

Remove the #if 0'd out pci20xxx_{do,di}() functions. They are not
needed.

Rename, and fix, the pci20xxx_dio_config() function. The control
and direction registers are not readable. Use the new register map
defines instead of the crazy bit shifts.

Rename, and fix, the pci20xxx_dio_insn_config() function. This
function should treat data[0] as the 'instruction' to handle not
just use it to determine if the port is an input or output.

Rename, and tix, the pci20xxx_dio_insn_bits() function. The 'state'
only needs to be updated if the 'mask' indicates.

For aesthetics, abosrb the pci20xxx_dio_init() into the (*attach)
function.

Fix the carrier board id detect in the (*attach). There are two carrier
board types, one with 32 dio channels and one without. Use this info
when setting up the dio 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>

This macro is not used, and it looks to much like the comedi CR_CHAN
macro. Just remove it.
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>

For aesthetic reasons, move the static const data to the head of
the file.
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>

Move a couple functions to remove the need for the last forward
declarations.
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>

Move the pci20xxx_dio_*() functions to remove the need for some of
the forward declarations.
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>

Move the pci20xxx_attach() and pci20xxx_detach() functions to remove
the need for some of the forward declarations.
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>

For aesthetic reasons, use the helper function to allocate the
subdevice private data instead of hanging it on the device
private data. The core will free the memory during the detach.
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>

Now that the addi_apci_1710 driver has been removed, get rid of all the
unnecessary stuff in addi_common.h.
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>

This driver is seriously broken and most of it does not "work" with
the comedi API. 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>

Move the necessary bits from addi_common.h to remove it's dependency
and make this driver standalone.
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>

Fix a couple comments within comments errors.

Remove the #include of eddi_eeprom.c. This driver does not use it.

Remove an unused local variable.
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>

All the AO channels have the same ranges. Remove the subdevice
s->range_table_list and just use the s->range_table to setup the
ranges.
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>

The only difference in the if() and else if() check of the chanlist
is the source of the range table length. Consolidate the checks to
make the function a bit more concise.
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>

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>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Change the flags in the private data to bit-fields to save a bit of
space.
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>

The 'ifnum' is only used during the attach of the device. Remove it
from the private data.
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>

The usb_device can be found when needed using the comedi_to_usb_dev()
helper. Use that instead the remove the back pointer from the private
data.
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>

For aesthetic reasons, pass the comedi_device pointer to this function
instead of the private data pointer.
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>

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".

Add a local variable for the usb_device pointer to tidy up the
usb_bulk_msg() call.
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>

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".

Add a local variable for the usb_device pointer to tidy up the
usb_bulk_msg() call.
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 back pointer is only used for a couple dev_printk() messages and
during the detach.

For the dev_printk() we can use the dev->class_dev. In the detach we
can get the usb_interface from the comedi_device.

Do that and remove the back pointer from the private data.
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 back pointer is no longer needed by the driver. Remove it.
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>

Pass the comedi_device pointer (the urb context) to this function
instead of the private data pointer.

Use a local variable for the urb pointer that is setup and submitted.

Remove the sanity check of the private data. This function can only
get called if the allocation was successful during the attach.
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>

Pass the comedi_device pointer (the urb context) to this function
instead of the private data pointer.

Use a local variable for the urb pointers that are setup and submitted.

Remove the sanity check of the private data. This function can only
get called if the allocation was successful during the attach.
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>

Pass the comedi_device pointer (the urb context) to this function
instead of the private data pointer.

Use a local variable for the urb pointers that are setup and submitted.

Remove the sanity check of the private data. This function can only
get called if the allocation was successful during the attach.
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>

Most of these are just function trace noise. The rest report errors
that the user can't do anything about so they amount to added noise.
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>