ptp_qoriq: add little enadian support

There is QorIQ 1588 timer IP block on the new ENETC Ethernet
controller. However it uses little endian mode which is different
with before. This patch is to add little endian support for the
driver by using "little-endian" dts node property.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 6 deletions

diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 757aec385493..1f8bb6a6a121 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -157,21 +157,30 @@ struct ptp_qoriq {
 	u32 cksel;
 	u32 tmr_fiper1;
 	u32 tmr_fiper2;
+	u32 (*read)(unsigned __iomem *addr);
+	void (*write)(unsigned __iomem *addr, u32 val);
 };
 
-static inline u32 qoriq_read(unsigned __iomem *addr)
+static inline u32 qoriq_read_be(unsigned __iomem *addr)
 {
-	u32 val;
-
-	val = ioread32be(addr);
-	return val;
+	return ioread32be(addr);
 }
 
-static inline void qoriq_write(unsigned __iomem *addr, u32 val)
+static inline void qoriq_write_be(unsigned __iomem *addr, u32 val)
 {
 	iowrite32be(val, addr);
 }
 
+static inline u32 qoriq_read_le(unsigned __iomem *addr)
+{
+	return ioread32(addr);
+}
+
+static inline void qoriq_write_le(unsigned __iomem *addr, u32 val)
+{
+	iowrite32(val, addr);
+}
+
 irqreturn_t ptp_qoriq_isr(int irq, void *priv);
 int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
 		   const struct ptp_clock_info caps);