[PATCH 12/13] mmc: atmel-mci: use endian agnostic IO

Ben Dooks ben.dooks at codethink.co.uk
Wed Mar 18 08:53:11 PDT 2015


Change the __raw IO functions to endian agnostic relaxed ones to allow
the driver to function on big endian ARM systems.

Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>
--
CC: Ludovic Desroches <ludovic.desroches at atmel.com>
CC: Chris Ball <chris at printf.net>
CC: Ulf Hansson <ulf.hansson at linaro.org>
CC: linux-mmc at vger.kernel.org
---
 drivers/mmc/host/atmel-mci-regs.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/atmel-mci-regs.h b/drivers/mmc/host/atmel-mci-regs.h
index c97001e..711bb53 100644
--- a/drivers/mmc/host/atmel-mci-regs.h
+++ b/drivers/mmc/host/atmel-mci-regs.h
@@ -135,10 +135,17 @@
 #define ATMCI_REGS_SIZE		0x100
 
 /* Register access macros */
-#define atmci_readl(port,reg)				\
+#ifdef CONFIG_AVR32
+#define atmci_readl(port,reg)			\
 	__raw_readl((port)->regs + reg)
 #define atmci_writel(port,reg,value)			\
 	__raw_writel((value), (port)->regs + reg)
+#else
+#define atmci_readl(port,reg)			\
+	readl_relaxed((port)->regs + reg)
+#define atmci_writel(port,reg,value)			\
+	writel_relaxed((value), (port)->regs + reg)
+#endif
 
 /* On AVR chips the Peripheral DMA Controller is not connected to MCI. */
 #ifdef CONFIG_AVR32
-- 
2.1.4




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