[ARM] ecard: add ecardm_iomap() / ecardm_iounmap()
Add devres ecardm_iomap() and ecardm_iounmap() for Acorn expansion
cards. Convert all expansion card drivers to use them.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 65f1398..f56d48c 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -41,11 +41,11 @@
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/kthread.h>
+#include <linux/io.h>
#include <asm/dma.h>
#include <asm/ecard.h>
#include <asm/hardware.h>
-#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/mach/irq.h>
@@ -966,6 +966,23 @@
}
EXPORT_SYMBOL(ecard_setirq);
+void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
+ unsigned long offset, unsigned long maxsize)
+{
+ unsigned long start = ecard_resource_start(ec, res);
+ unsigned long end = ecard_resource_end(ec, res);
+
+ if (offset > (end - start))
+ return NULL;
+
+ start += offset;
+ if (maxsize && end - start > maxsize)
+ end = start + maxsize;
+
+ return devm_ioremap(&ec->dev, start, end - start);
+}
+EXPORT_SYMBOL(ecardm_iomap);
+
/*
* Probe for an expansion card.
*