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Message-Id: <1310631065-4271-1-git-send-email-u.kleine-koenig@pengutronix.de>
Date: Thu, 14 Jul 2011 10:11:05 +0200
From: Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>
To: linux-arm-kernel@...ts.infradead.org
Cc: Arnd Bergmann <arnd@...db.de>,
H Hartley Sweeten <hartleys@...ionengravers.com>,
Sascha Hauer <s.hauer@...gutronix.de>,
Wolfram Sang <w.sang@...gutronix.de>,
linux-kernel@...r.kernel.org, thierry.nolf.barco@...il.com,
Huang Shijie <b32955@...escale.com>,
linux-mtd@...ts.infradead.org,
Andrew Morton <akpm@...ux-foundation.org>,
Lothar Waßmann <LW@...o-electronics.de>
Subject: [PATCH v3] new helper to define common struct resource constructs
resource definitions that just define start, end and flags =
IORESOURCE_MEM or IORESOURCE_IRQ (with start=end) are quite common. So
introduce a shortcut for them. For completeness add macros for
IORESOURCE_DMA and IORESOURCE_IO, too and also make available a set of
macros to specify named resources of all types which are less common.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
changes since v2:
- add parentheses around macro parameter usages
changes since v1:
- also add _IO and _DMA variants
include/linux/ioport.h | 30 ++++++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 63eb429..9d57a71 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -109,6 +109,36 @@ struct resource_list {
/* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */
#define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */
+
+/* helpers to define resources */
+#define DEFINE_RES_NAMED(_start, _size, _name, _flags) \
+ { \
+ .start = (_start), \
+ .end = (_start) + (_size) - 1, \
+ .name = (_name), \
+ .flags = (_flags), \
+ }
+
+#define DEFINE_RES_IO_NAMED(_start, _size, _name) \
+ DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_IO)
+#define DEFINE_RES_IO(_start, _size) \
+ DEFINE_RES_IO_NAMED((_start), (_size), NULL)
+
+#define DEFINE_RES_MEM_NAMED(_start, _size, _name) \
+ DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_MEM)
+#define DEFINE_RES_MEM(_start, _size) \
+ DEFINE_RES_MEM_NAMED((_start), (_size), NULL)
+
+#define DEFINE_RES_IRQ_NAMED(_irq, _name) \
+ DEFINE_RES_NAMED((_irq), 1, (_name), IORESOURCE_IRQ)
+#define DEFINE_RES_IRQ(_irq) \
+ DEFINE_RES_IRQ_NAMED((_irq), NULL)
+
+#define DEFINE_RES_DMA_NAMED(_dma, _name) \
+ DEFINE_RES_NAMED((_dma), 1, (_name), IORESOURCE_DMA)
+#define DEFINE_RES_DMA(_dma) \
+ DEFINE_RES_DMA_NAMED((_dma), NULL)
+
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;
extern struct resource iomem_resource;
--
1.7.5.4
--
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