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Subject[PATCH v8 06/16] crypto: caam - use ioread64*_hi_lo in rd_reg64
Date
Following the same transformation logic as outlined in previous commit
converting wr_reg64, convert rd_reg64 to use helpers from
<linux/io-64-nonatomic-hi-lo.h> first. No functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Cc: Chris Spencer <christopher.spencer@sea.co.uk>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Aymen Sghaier <aymen.sghaier@nxp.com>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
drivers/crypto/caam/regs.h | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index 6acfef30a90c..4efc10534873 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -172,12 +172,20 @@ static inline void wr_reg64(void __iomem *reg, u64 data)

static inline u64 rd_reg64(void __iomem *reg)
{
- if (!caam_imx && caam_little_end)
- return ((u64)rd_reg32((u32 __iomem *)(reg) + 1) << 32 |
- (u64)rd_reg32((u32 __iomem *)(reg)));
+ if (caam_little_end) {
+ if (caam_imx) {
+ u32 low, high;

- return ((u64)rd_reg32((u32 __iomem *)(reg)) << 32 |
- (u64)rd_reg32((u32 __iomem *)(reg) + 1));
+ high = ioread32(reg);
+ low = ioread32(reg + sizeof(u32));
+
+ return low + ((u64)high << 32);
+ } else {
+ return ioread64(reg);
+ }
+ } else {
+ return ioread64be(reg);
+ }
}
#endif /* CONFIG_64BIT */

--
2.21.0
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