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authorJaiprakash Singh <b44839@freescale.com>2015-05-21 05:17:11 +0300
committerScott Wood <scottwood@freescale.com>2015-08-08 06:59:34 +0300
commitcf184dc2dd33847f4b211b01d8c7ec0526e6c5e4 (patch)
treefc8bfced6f839edc21c9548d81697f7de17cdf86 /include/linux/fsl_ifc.h
parent3fa647bff31fe7b8818a40742506d47d0dc7f8f5 (diff)
downloadlinux-cf184dc2dd33847f4b211b01d8c7ec0526e6c5e4.tar.xz
fsl_ifc: Change IO accessor based on endianness
IFC IO accressor are set at run time based on IFC IP registers endianness.IFC node in DTS file contains information about endianness. Signed-off-by: Jaiprakash Singh <b44839@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'include/linux/fsl_ifc.h')
-rw-r--r--include/linux/fsl_ifc.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/fsl_ifc.h b/include/linux/fsl_ifc.h
index bf0321eabbda..0023088b253b 100644
--- a/include/linux/fsl_ifc.h
+++ b/include/linux/fsl_ifc.h
@@ -841,9 +841,59 @@ struct fsl_ifc_ctrl {
u32 nand_stat;
wait_queue_head_t nand_wait;
+ bool little_endian;
};
extern struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;
+static inline u32 ifc_in32(void __iomem *addr)
+{
+ u32 val;
+
+ if (fsl_ifc_ctrl_dev->little_endian)
+ val = ioread32(addr);
+ else
+ val = ioread32be(addr);
+
+ return val;
+}
+
+static inline u16 ifc_in16(void __iomem *addr)
+{
+ u16 val;
+
+ if (fsl_ifc_ctrl_dev->little_endian)
+ val = ioread16(addr);
+ else
+ val = ioread16be(addr);
+
+ return val;
+}
+
+static inline u8 ifc_in8(void __iomem *addr)
+{
+ return ioread8(addr);
+}
+
+static inline void ifc_out32(u32 val, void __iomem *addr)
+{
+ if (fsl_ifc_ctrl_dev->little_endian)
+ iowrite32(val, addr);
+ else
+ iowrite32be(val, addr);
+}
+
+static inline void ifc_out16(u16 val, void __iomem *addr)
+{
+ if (fsl_ifc_ctrl_dev->little_endian)
+ iowrite16(val, addr);
+ else
+ iowrite16be(val, addr);
+}
+
+static inline void ifc_out8(u8 val, void __iomem *addr)
+{
+ iowrite8(val, addr);
+}
#endif /* __ASM_FSL_IFC_H */