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staging: comedi: pcmuio: tidy up the multi-line comments
Tidy up the multi-line comments at the beginning of the file to follow the 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>
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H Hartley Sweeten
Greg Kroah-Hartman
parent
3b48c53580
commit
9e1087b5ae
@ -1,75 +1,77 @@
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/*
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comedi/drivers/pcmuio.c
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Driver for Winsystems PC-104 based 48-channel and 96-channel DIO boards.
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* pcmuio.c
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* Comedi driver for Winsystems PC-104 based 48/96-channel DIO boards.
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 2006 Calin A. Culianu <calin@ajvar.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 2006 Calin A. Culianu <calin@ajvar.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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/*
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Driver: pcmuio
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Description: A driver for the PCM-UIO48A and PCM-UIO96A boards from Winsystems.
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Devices: [Winsystems] PCM-UIO48A (pcmuio48), PCM-UIO96A (pcmuio96)
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Author: Calin Culianu <calin@ajvar.org>
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Updated: Fri, 13 Jan 2006 12:01:01 -0500
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Status: works
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A driver for the relatively straightforward-to-program PCM-UIO48A and
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PCM-UIO96A boards from Winsystems. These boards use either one or two
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(in the 96-DIO version) WS16C48 ASIC HighDensity I/O Chips (HDIO).
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This chip is interesting in that each I/O line is individually
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programmable for INPUT or OUTPUT (thus comedi_dio_config can be done
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on a per-channel basis). Also, each chip supports edge-triggered
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interrupts for the first 24 I/O lines. Of course, since the
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96-channel version of the board has two ASICs, it can detect polarity
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changes on up to 48 I/O lines. Since this is essentially an (non-PnP)
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ISA board, I/O Address and IRQ selection are done through jumpers on
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the board. You need to pass that information to this driver as the
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first and second comedi_config option, respectively. Note that the
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48-channel version uses 16 bytes of IO memory and the 96-channel
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version uses 32-bytes (in case you are worried about conflicts). The
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48-channel board is split into two 24-channel comedi subdevices.
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The 96-channel board is split into 4 24-channel DIO subdevices.
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Note that IRQ support has been added, but it is untested.
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To use edge-detection IRQ support, pass the IRQs of both ASICS
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(for the 96 channel version) or just 1 ASIC (for 48-channel version).
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Then, use use comedi_commands with TRIG_NOW.
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Your callback will be called each time an edge is triggered, and the data
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values will be two sample_t's, which should be concatenated to form one
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32-bit unsigned int. This value is the mask of channels that had
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edges detected from your channel list. Note that the bits positions
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in the mask correspond to positions in your chanlist when you specified
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the command and *not* channel id's!
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To set the polarity of the edge-detection interrupts pass a nonzero value for
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either CR_RANGE or CR_AREF for edge-up polarity, or a zero value for both
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CR_RANGE and CR_AREF if you want edge-down polarity.
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In the 48-channel version:
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On subdev 0, the first 24 channels channels are edge-detect channels.
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In the 96-channel board you have the collowing channels that can do edge detection:
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subdev 0, channels 0-24 (first 24 channels of 1st ASIC)
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subdev 2, channels 0-24 (first 24 channels of 2nd ASIC)
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Configuration Options:
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[0] - I/O port base address
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[1] - IRQ (for first ASIC, or first 24 channels)
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[2] - IRQ for second ASIC (pcmuio96 only - IRQ for chans 48-72 .. can be the same as first irq!)
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*/
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* Driver: pcmuio
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* Description: Winsystems PC-104 based 48/96-channel DIO boards.
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* Devices: (Winsystems) PCM-UIO48A [pcmuio48]
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* (Winsystems) PCM-UIO96A [pcmuio96]
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* Author: Calin Culianu <calin@ajvar.org>
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* Updated: Fri, 13 Jan 2006 12:01:01 -0500
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* Status: works
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*
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* A driver for the relatively straightforward-to-program PCM-UIO48A and
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* PCM-UIO96A boards from Winsystems. These boards use either one or two
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* (in the 96-DIO version) WS16C48 ASIC HighDensity I/O Chips (HDIO). This
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* chip is interesting in that each I/O line is individually programmable
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* for INPUT or OUTPUT (thus comedi_dio_config can be done on a per-channel
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* basis). Also, each chip supports edge-triggered interrupts for the first
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* 24 I/O lines. Of course, since the 96-channel version of the board has
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* two ASICs, it can detect polarity changes on up to 48 I/O lines. Since
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* this is essentially an (non-PnP) ISA board, I/O Address and IRQ selection
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* are done through jumpers on the board. You need to pass that information
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* to this driver as the first and second comedi_config option, respectively.
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* Note that the 48-channel version uses 16 bytes of IO memory and the 96-
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* channel version uses 32-bytes (in case you are worried about conflicts).
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* The 48-channel board is split into two 24-channel comedi subdevices. The
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* 96-channel board is split into 4 24-channel DIO subdevices.
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*
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* Note that IRQ support has been added, but it is untested.
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*
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* To use edge-detection IRQ support, pass the IRQs of both ASICS (for the
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* 96 channel version) or just 1 ASIC (for 48-channel version). Then, use
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* comedi_commands with TRIG_NOW. Your callback will be called each time an
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* edge is triggered, and the data values will be two sample_t's, which
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* should be concatenated to form one 32-bit unsigned int. This value is
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* the mask of channels that had edges detected from your channel list. Note
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* that the bits positions in the mask correspond to positions in your
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* chanlist when you specified the command and *not* channel id's!
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*
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* To set the polarity of the edge-detection interrupts pass a nonzero value
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* for either CR_RANGE or CR_AREF for edge-up polarity, or a zero value for
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* both CR_RANGE and CR_AREF if you want edge-down polarity.
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*
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* In the 48-channel version:
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*
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* On subdev 0, the first 24 channels channels are edge-detect channels.
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*
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* In the 96-channel board you have the following channels that can do edge
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* detection:
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*
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* subdev 0, channels 0-24 (first 24 channels of 1st ASIC)
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* subdev 2, channels 0-24 (first 24 channels of 2nd ASIC)
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*
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* Configuration Options:
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* [0] - I/O port base address
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* [1] - IRQ (for first ASIC, or first 24 channels)
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* [2] - IRQ (for second ASIC, pcmuio96 only - IRQ for chans 48-72
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* can be the same as first irq!)
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*/
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#include <linux/interrupt.h>
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#include <linux/slab.h>
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