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authorDong Aisheng <dong.aisheng@linaro.org>2012-09-04 22:57:13 -0400
committerSamuel Ortiz <sameo@linux.intel.com>2012-09-17 09:24:14 -0400
commit87d687301f380729ec320619f100f3ba39f3693d (patch)
tree3f6f274a01552da3b5f7af4dc1eaaad04a11c1b4 /include
parenta435ae1d51e2f18414f2a87219fdbe068231e692 (diff)
mfd: Add syscon driver based on regmap
Add regmap based syscon driver. This is usually used for access misc bits in registers which does not belong to a specific module, for example, IMX IOMUXC GPR and ANATOP. With this driver, client can use generic regmap API to access registers which are registered into syscon. Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mfd/syscon.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h
new file mode 100644
index 000000000000..6aeb6b8da64d
--- /dev/null
+++ b/include/linux/mfd/syscon.h
@@ -0,0 +1,23 @@
1/*
2 * System Control Driver
3 *
4 * Copyright (C) 2012 Freescale Semiconductor, Inc.
5 * Copyright (C) 2012 Linaro Ltd.
6 *
7 * Author: Dong Aisheng <dong.aisheng@linaro.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 */
14
15#ifndef __LINUX_MFD_SYSCON_H__
16#define __LINUX_MFD_SYSCON_H__
17
18extern struct regmap *syscon_node_to_regmap(struct device_node *np);
19extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
20extern struct regmap *syscon_regmap_lookup_by_phandle(
21 struct device_node *np,
22 const char *property);
23#endif /* __LINUX_MFD_SYSCON_H__ */