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authorAnton Vorontsov <cbouatmailru@gmail.com>2010-10-28 02:33:15 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-28 05:03:06 +0400
commitaeec56e331c6d2750de02ef34b305338305ca690 (patch)
tree1a9df159e4408cf1f4d9ab8451ae803de6007126 /include/linux/basic_mmio_gpio.h
parentd0f744c8cbd19a8d07eccb15bb08e6a29c4d5192 (diff)
downloadlinux-aeec56e331c6d2750de02ef34b305338305ca690.tar.xz
gpio: add driver for basic memory-mapped GPIO controllers
The basic GPIO controllers may be found in various on-board FPGA and ASIC solutions that are used to control board's switches, LEDs, chip-selects, Ethernet/USB PHY power, etc. These controllers may not provide any means of pin setup (in/out/open drain). The driver supports: - 8/16/32/64 bits registers; - GPIO controllers with clear/set registers; - GPIO controllers with a single "data" register; - Big endian bits/GPIOs ordering (mostly used on PowerPC). Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com> Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: David Brownell <david-b@pacbell.net> Cc: Samuel Ortiz <sameo@linux.intel.com>, Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/basic_mmio_gpio.h')
-rw-r--r--include/linux/basic_mmio_gpio.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/basic_mmio_gpio.h b/include/linux/basic_mmio_gpio.h
new file mode 100644
index 000000000000..198087a16fc4
--- /dev/null
+++ b/include/linux/basic_mmio_gpio.h
@@ -0,0 +1,20 @@
+/*
+ * Basic memory-mapped GPIO controllers.
+ *
+ * Copyright 2008 MontaVista Software, Inc.
+ * Copyright 2008,2010 Anton Vorontsov <cbouatmailru@gmail.com>
+ *
+ * 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.
+ */
+
+#ifndef __BASIC_MMIO_GPIO_H
+#define __BASIC_MMIO_GPIO_H
+
+struct bgpio_pdata {
+ int base;
+};
+
+#endif /* __BASIC_MMIO_GPIO_H */