[PATCH v2 2/3] staging: comedi: drivers: move comedi_async 'cur_chan' tracking into the core
Ian Abbott
abbotti at mev.co.uk
Fri Oct 31 17:28:22 UTC 2014
On 31/10/14 16:49, H Hartley Sweeten wrote:
> The commedi_async 'cur_chan' member is used to track the current position
> in the chanlist for a scan. Currently only a couple comedi drivers use
> this member.
>
> For aeshtetics, move the 'cur_chan' tracking into the core for non-SDF_PACKED
> subdevices. The 'cur_chan' will be updated after reading or writing samples
> to the async buffer by comedi_inc_scan_progress(). All non-SDF_PACKED subdevices
> will then automatiaclly track the 'cur_chan'.
>
> Some of the drivers use the 'cur_chan' to detect the end of scan event when
> counting scans. The COMEDI_CB_EOS event is automatically added by the core
> when the end of scan is detected. The drivers just need to check if the
> 'cur_chan' is 0 to count the number of scans completed.
>
> Signed-off-by: H Hartley Sweeten <hsweeten at visionengravers.com>
> Cc: Ian Abbott <abbotti at mev.co.uk>
> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> ---
> drivers/staging/comedi/drivers.c | 7 +++++++
> drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c | 2 --
> drivers/staging/comedi/drivers/adl_pci9118.c | 8 ++------
> drivers/staging/comedi/drivers/adv_pci1710.c | 11 +----------
> drivers/staging/comedi/drivers/ni_mio_common.c | 8 --------
> drivers/staging/comedi/drivers/pcl812.c | 13 ++++---------
> drivers/staging/comedi/drivers/pcl816.c | 6 +-----
> drivers/staging/comedi/drivers/pcl818.c | 6 +-----
> drivers/staging/comedi/drivers/rtd520.c | 3 ---
> 9 files changed, 16 insertions(+), 48 deletions(-)
Reviewed-by: Ian Abbott <abbotti at mev.co.uk>
--
-=( Ian Abbott @ MEV Ltd. E-mail: <abbotti at mev.co.uk> )=-
-=( Web: http://www.mev.co.uk/ )=-
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