Initial import

1 files changed, 85 insertions, 0 deletions

diff --git a/drivers/staging/comedi/drivers/amplc_pc236.c b/drivers/staging/comedi/drivers/amplc_pc236.c
new file mode 100644
index 000000000..875cc19cb
--- /dev/null
+++ b/drivers/staging/comedi/drivers/amplc_pc236.c
@@ -0,0 +1,85 @@
+/*
+ * comedi/drivers/amplc_pc236.c
+ * Driver for Amplicon PC36AT DIO 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_pc236
+ * Description: Amplicon PC36AT
+ * Author: Ian Abbott <abbotti@mev.co.uk>
+ * Devices: [Amplicon] PC36AT (pc36at)
+ * Updated: Fri, 25 Jul 2014 15:32:40 +0000
+ * Status: works
+ *
+ * Configuration options - PC36AT:
+ *   [0] - I/O port base address
+ *   [1] - IRQ (optional)
+ *
+ * The PC36AT board has a single 8255 appearing as subdevice 0.
+ *
+ * Subdevice 1 pretends to be a digital input device, but it always returns
+ * 0 when read. However, if you run a command with scan_begin_src=TRIG_EXT,
+ * a rising edge on port C bit 3 acts as an external trigger, which can be
+ * used to wake up tasks.  This is like the comedi_parport device, but the
+ * only way to physically disable the interrupt on the PC36AT is to remove
+ * the IRQ jumper.  If no interrupt is connected, then subdevice 1 is
+ * unused.
+ */
+
+#include <linux/module.h>
+
+#include "../comedidev.h"
+
+#include "amplc_pc236.h"
+
+static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
+{
+	struct pc236_private *devpriv;
+	int ret;
+
+	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
+	if (!devpriv)
+		return -ENOMEM;
+
+	ret = comedi_request_region(dev, it->options[0], 0x4);
+	if (ret)
+		return ret;
+
+	return amplc_pc236_common_attach(dev, dev->iobase, it->options[1], 0);
+}
+
+static const struct pc236_board pc236_boards[] = {
+	{
+		.name = "pc36at",
+	},
+};
+
+static struct comedi_driver amplc_pc236_driver = {
+	.driver_name = "amplc_pc236",
+	.module = THIS_MODULE,
+	.attach = pc236_attach,
+	.detach = comedi_legacy_detach,
+	.board_name = &pc236_boards[0].name,
+	.offset = sizeof(struct pc236_board),
+	.num_names = ARRAY_SIZE(pc236_boards),
+};
+
+module_comedi_driver(amplc_pc236_driver);
+
+MODULE_AUTHOR("Comedi http://www.comedi.org");
+MODULE_DESCRIPTION("Comedi driver for Amplicon PC36AT DIO boards");
+MODULE_LICENSE("GPL");