From: Andy Shevchenko <andriy.shevche...@linux.intel.com>
There are already helper functions to do 64-bit I/O on 32-bit machines, thus we
don't need to reinvent the wheel. In our case we can't use readq() / writeq()
even on 64-bit kernel since there is a hardware limitation (OCP bus is a 32-bit
bus).
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
(cherry picked from commit 689d4453ed8212ab4a5d53982ac01cbe6531d18a)
Signed-off-by: Voon, Weifeng <weifeng.v...@intel.com>
---
drivers/mfd/intel-lpss.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
index fdf4d5c..001a7d7 100644
--- a/drivers/mfd/intel-lpss.c
+++ b/drivers/mfd/intel-lpss.c
@@ -26,6 +26,8 @@
#include <linux/pm_runtime.h>
#include <linux/seq_file.h>
+#include <asm-generic/io-64-nonatomic-lo-hi.h>
+
#include "intel-lpss.h"
#define LPSS_DEV_OFFSET 0x000
@@ -52,8 +54,7 @@
#define LPSS_PRIV_SSP_REG 0x20
#define LPSS_PRIV_SSP_REG_DIS_DMA_FIN BIT(0)
-#define LPSS_PRIV_REMAP_ADDR_LO 0x40
-#define LPSS_PRIV_REMAP_ADDR_HI 0x44
+#define LPSS_PRIV_REMAP_ADDR 0x40
#define LPSS_PRIV_CAPS 0xfc
#define LPSS_PRIV_CAPS_NO_IDMA BIT(8)
@@ -250,12 +251,7 @@ static void intel_lpss_set_remap_addr(const struct
intel_lpss *lpss)
{
resource_size_t addr = lpss->info->mem->start;
- writel(addr, lpss->priv + LPSS_PRIV_REMAP_ADDR_LO);
-#if BITS_PER_LONG > 32
- writel(addr >> 32, lpss->priv + LPSS_PRIV_REMAP_ADDR_HI);
-#else
- writel(0, lpss->priv + LPSS_PRIV_REMAP_ADDR_HI);
-#endif
+ lo_hi_writeq(addr, lpss->priv + LPSS_PRIV_REMAP_ADDR);
}
static void intel_lpss_deassert_reset(const struct intel_lpss *lpss)
--
1.9.1
--
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