Add proper support for EMIT_WRITE operation which is write only.
Do not use EMIT_MASKWRITE which is read-modify-write.
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
Changes in v2:
- Add own opcode for write operation
- Change commit message (was Convert EMIT_WRITE to EMIT_MASKWRITE) -
requested by Mike
arch/arm/mach-zynq/include/mach/ps7_init_gpl.h | 2 ++
arch/arm/mach-zynq/ps7_spl_init.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/arch/arm/mach-zynq/include/mach/ps7_init_gpl.h
b/arch/arm/mach-zynq/include/mach/ps7_init_gpl.h
index fa5d486afb0c..0af4165a3ef1 100644
--- a/arch/arm/mach-zynq/include/mach/ps7_init_gpl.h
+++ b/arch/arm/mach-zynq/include/mach/ps7_init_gpl.h
@@ -13,6 +13,7 @@
#define OPCODE_MASKWRITE 0U
#define OPCODE_MASKPOLL 1U
#define OPCODE_MASKDELAY 2U
+#define OPCODE_WRITE 3U
#define OPCODE_ADDRESS_MASK (~3U)
/* Sentinel */
@@ -21,6 +22,7 @@
#define EMIT_MASKWRITE(addr, mask, val) OPCODE_MASKWRITE | addr, mask,
val
#define EMIT_MASKPOLL(addr, mask) OPCODE_MASKPOLL | addr, mask
#define EMIT_MASKDELAY(addr, mask) OPCODE_MASKDELAY | addr, mask
+#define EMIT_WRITE(addr, val) OPCODE_WRITE | addr, val
/* Returns codes of ps7_init* */
#define PS7_INIT_SUCCESS (0)
diff --git a/arch/arm/mach-zynq/ps7_spl_init.c
b/arch/arm/mach-zynq/ps7_spl_init.c
index 069827880d10..6dc4e0364d8b 100644
--- a/arch/arm/mach-zynq/ps7_spl_init.c
+++ b/arch/arm/mach-zynq/ps7_spl_init.c
@@ -108,6 +108,12 @@ int __weak ps7_config(unsigned long *ps7_config_init)
iowrite((ioread(addr) & ~mask) | (val & mask), addr);
break;
+ case OPCODE_WRITE:
+ numargs = 2;
+ val = ptr[1];
+ iowrite(val, addr);
+ break;
+
case OPCODE_MASKPOLL:
numargs = 2;
mask = ptr[1];
--
1.9.1
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