Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / comedi / drivers / amplc_pc263.c

diff --git a/kernel/drivers/staging/comedi/drivers/amplc_pc263.c b/kernel/drivers/staging/comedi/drivers/amplc_pc263.c
new file mode 100644 (file)
index 0000000..b1946ce
--- /dev/null
+++ b/kernel/drivers/staging/comedi/drivers/amplc_pc263.c
@@ -0,0 +1,111 @@
+/*
+    comedi/drivers/amplc_pc263.c
+    Driver for Amplicon PC263 and PCI263 relay boards.
+
+    Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+*/
+/*
+Driver: amplc_pc263
+Description: Amplicon PC263
+Author: Ian Abbott <abbotti@mev.co.uk>
+Devices: [Amplicon] PC263 (pc263)
+Updated: Fri, 12 Apr 2013 15:19:36 +0100
+Status: works
+
+Configuration options:
+  [0] - I/O port base address
+
+The board appears as one subdevice, with 16 digital outputs, each
+connected to a reed-relay. Relay contacts are closed when output is 1.
+The state of the outputs can be read.
+*/
+
+#include <linux/module.h>
+#include "../comedidev.h"
+
+/* PC263 registers */
+
+/*
+ * Board descriptions for Amplicon PC263.
+ */
+
+struct pc263_board {
+       const char *name;
+};
+
+static const struct pc263_board pc263_boards[] = {
+       {
+               .name = "pc263",
+       },
+};
+
+static int pc263_do_insn_bits(struct comedi_device *dev,
+                             struct comedi_subdevice *s,
+                             struct comedi_insn *insn,
+                             unsigned int *data)
+{
+       if (comedi_dio_update_state(s, data)) {
+               outb(s->state & 0xff, dev->iobase);
+               outb((s->state >> 8) & 0xff, dev->iobase + 1);
+       }
+
+       data[1] = s->state;
+
+       return insn->n;
+}
+
+static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it)
+{
+       struct comedi_subdevice *s;
+       int ret;
+
+       ret = comedi_request_region(dev, it->options[0], 0x2);
+       if (ret)
+               return ret;
+
+       ret = comedi_alloc_subdevices(dev, 1);
+       if (ret)
+               return ret;
+
+       s = &dev->subdevices[0];
+       /* digital output subdevice */
+       s->type = COMEDI_SUBD_DO;
+       s->subdev_flags = SDF_WRITABLE;
+       s->n_chan = 16;
+       s->maxdata = 1;
+       s->range_table = &range_digital;
+       s->insn_bits = pc263_do_insn_bits;
+       /* read initial relay state */
+       s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8);
+
+       return 0;
+}
+
+static struct comedi_driver amplc_pc263_driver = {
+       .driver_name = "amplc_pc263",
+       .module = THIS_MODULE,
+       .attach = pc263_attach,
+       .detach = comedi_legacy_detach,
+       .board_name = &pc263_boards[0].name,
+       .offset = sizeof(struct pc263_board),
+       .num_names = ARRAY_SIZE(pc263_boards),
+};
+
+module_comedi_driver(amplc_pc263_driver);
+
+MODULE_AUTHOR("Comedi http://www.comedi.org");
+MODULE_DESCRIPTION("Comedi driver for Amplicon PC263 relay board");
+MODULE_LICENSE("GPL");