Thread (79 messages) 79 messages, 9 authors, 2017-06-19
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[PATCH v5 02/10] pinctrl: generic: Add macros to unpack properties

From: Jacopo Mondi <hidden>
Date: 2017-04-27 08:20:40
Also in: linux-gpio, linux-renesas-soc, lkml
Subsystem: pin control subsystem, the rest · Maintainers: Linus Walleij, Linus Torvalds

Add PIN_CONF_UNPACK_PARAM and PIN_CONF_UNPACK_ARGS macros useful to
unpack generic properties and their arguments

Signed-off-by: Jacopo Mondi <redacted>
---
 include/linux/pinctrl/pinconf-generic.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index 279e3c5..2cd2a03 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -118,7 +118,9 @@ enum pin_config_param {
 /*
  * Helpful configuration macro to be used in tables etc.
  */
-#define PIN_CONF_PACKED(p, a) ((a << 8) | ((unsigned long) p & 0xffUL))
+#define PIN_CONF_PACKED(p, a) (((a) << 8) | ((unsigned long) (p) & 0xffUL))
+#define PIN_CONF_UNPACK_PARAM(c) ((c) & 0xffUL)
+#define PIN_CONF_UNPACK_ARGS(c) ((c) >> 8)
 
 /*
  * The following inlines stuffs a configuration parameter and data value
-- 
2.7.4

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