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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/staging/comedi/drivers/8255.h
Initial import
Diffstat (limited to 'drivers/staging/comedi/drivers/8255.h')
-rw-r--r--drivers/staging/comedi/drivers/8255.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/8255.h b/drivers/staging/comedi/drivers/8255.h
new file mode 100644
index 000000000..934b940eb
--- /dev/null
+++ b/drivers/staging/comedi/drivers/8255.h
@@ -0,0 +1,48 @@
+/*
+ * module/8255.h
+ * Header file for 8255
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998 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.
+ */
+
+#ifndef _8255_H
+#define _8255_H
+
+#include "../comedidev.h"
+
+#define I8255_SIZE 0x04
+
+#define I8255_DATA_A_REG 0x00
+#define I8255_DATA_B_REG 0x01
+#define I8255_DATA_C_REG 0x02
+#define I8255_CTRL_REG 0x03
+#define I8255_CTRL_C_LO_IO (1 << 0)
+#define I8255_CTRL_B_IO (1 << 1)
+#define I8255_CTRL_B_MODE (1 << 2)
+#define I8255_CTRL_C_HI_IO (1 << 3)
+#define I8255_CTRL_A_IO (1 << 4)
+#define I8255_CTRL_A_MODE(x) ((x) << 5)
+#define I8255_CTRL_CW (1 << 7)
+
+int subdev_8255_init(struct comedi_device *, struct comedi_subdevice *,
+ int (*io)(struct comedi_device *,
+ int, int, int, unsigned long),
+ unsigned long regbase);
+
+int subdev_8255_mm_init(struct comedi_device *, struct comedi_subdevice *,
+ int (*io)(struct comedi_device *,
+ int, int, int, unsigned long),
+ unsigned long regbase);
+
+#endif