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| author | H Hartley Sweeten | 2014-11-12 00:55:28 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2014-11-27 00:33:24 +0100 |
| commit | 387ca51f7c403b342a9e382ac15c6df461ea2190 (patch) | |
| tree | 86961a0af5dd2a20967d9a89c21ddbdcc3236682 /drivers/staging/comedi/Kconfig | |
| parent | staging: comedi: dmm32at: introduce dmm32at_ai_set_chanspec() (diff) | |
| download | kernel-qcow2-linux-387ca51f7c403b342a9e382ac15c6df461ea2190.tar.gz kernel-qcow2-linux-387ca51f7c403b342a9e382ac15c6df461ea2190.tar.xz kernel-qcow2-linux-387ca51f7c403b342a9e382ac15c6df461ea2190.zip | |
staging: comedi: dmm32at: use 8255 module for Digital I/O subdevice
The Dimond-MM-32-AT board uses an internal 82C55-type digital I/O circuit to
provide the 24 digital I/O lines. The only quirk is the need to set the page
selection bits in the control register to select page 1 addresses.
Instead of duplicating the 8255 code, provide an (*io) callback and use the
8255 module to support this subdevice.
This also removes the need for the private data in this 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>
Diffstat (limited to 'drivers/staging/comedi/Kconfig')
| -rw-r--r-- | drivers/staging/comedi/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig index cf52577349a7..a8201fe87512 100644 --- a/drivers/staging/comedi/Kconfig +++ b/drivers/staging/comedi/Kconfig @@ -384,6 +384,7 @@ config COMEDI_DT282X config COMEDI_DMM32AT tristate "Diamond Systems MM-32-AT PC/104 board support" + select COMEDI_8255 ---help--- Enable support for Diamond Systems MM-32-AT PC/104 boards |