1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/amplc_pc263.c b/drivers/comedi/drivers/amplc_pc263.c
new file mode 100644
index 000000000..d7f088a8a
--- /dev/null
+++ b/drivers/comedi/drivers/amplc_pc263.c
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Driver for Amplicon PC263 relay board.
+ *
+ * Copyright (C) 2002 MEV Ltd. <https://www.mev.co.uk/>
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+ */
+
+/*
+ * 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 <linux/comedi/comedidev.h>
+
+/* PC263 registers */
+#define PC263_DO_0_7_REG	0x00
+#define PC263_DO_8_15_REG	0x01
+
+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 + PC263_DO_0_7_REG);
+		outb((s->state >> 8) & 0xff, dev->iobase + PC263_DO_8_15_REG);
+	}
+
+	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;
+
+	/* Digital Output subdevice */
+	s = &dev->subdevices[0];
+	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 + PC263_DO_0_7_REG) |
+		   (inb(dev->iobase + PC263_DO_8_15_REG) << 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 https://www.comedi.org");
+MODULE_DESCRIPTION("Comedi driver for Amplicon PC263 relay board");
+MODULE_LICENSE("GPL");