Hi Thierry,
On Fri, 22 Mar 2019 at 02:10, Thierry Reding thierry.reding@gmail.com wrote:
From: Thierry Reding treding@nvidia.com
These helpers can be used to unpack variables of type fdt_addr_t and fdt_size_t into a pair of 32-bit variables. This is useful in cases where such variables need to be written to properties (such as "reg") of a device tree node where they need to be split into cells.
Signed-off-by: Thierry Reding treding@nvidia.com
Changes in v2:
- new patch
include/fdtdec.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/include/fdtdec.h b/include/fdtdec.h index a965c33157c9..a0ba57c6318b 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -23,6 +23,31 @@ */ typedef phys_addr_t fdt_addr_t; typedef phys_size_t fdt_size_t;
+static inline fdt32_t fdt_addr_unpack(fdt_addr_t addr, fdt32_t *upper) +{
if (upper)+#ifdef CONFIG_PHYS_64BIT
Could we use 'if IS_ENABLED()' instead?
*upper = addr >> 32;+#else
*upper = 0;+#endif
return addr;+}
+static inline fdt32_t fdt_size_unpack(fdt_size_t size, fdt32_t *upper) +{
if (upper)+#ifdef CONFIG_PHYS_64BIT
*upper = size >> 32;+#else
*upper = 0;+#endif
return size;+}
#ifdef CONFIG_PHYS_64BIT #define FDT_ADDR_T_NONE (-1U)
#define fdt_addr_to_cpu(reg) be64_to_cpu(reg)
2.21.0
Regards, Simon