arm: at91/spl: atmel_sfr: move saic redirect to separate file
To make saic redirect code sharing with other SoCs, move the
saic redirect code from SAMA5D4 particular file,
mach-at91/armv7/sama5d4_devices.c to a separate file,
mach-at91/atmel_sfr.c
Move ATMEL_SFR_AICREDIR_KEY definition to sama5d4.h, because each
SoC has its own value.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/arch/arm/mach-at91/atmel_sfr.c b/arch/arm/mach-at91/atmel_sfr.c
new file mode 100644
index 0000000..2bccb84
--- /dev/null
+++ b/arch/arm/mach-at91/atmel_sfr.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2015 Atmel Corporation
+ * Wenyou Yang <wenyou.yang@atmel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sama5_sfr.h>
+
+void redirect_int_from_saic_to_aic(void)
+{
+ struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
+ u32 key32;
+
+ if (!(readl(&sfr->aicredir) & ATMEL_SFR_AICREDIR_NSAIC)) {
+ key32 = readl(&sfr->sn1) ^ ATMEL_SFR_AICREDIR_KEY;
+ writel((key32 | ATMEL_SFR_AICREDIR_NSAIC), &sfr->aicredir);
+ }
+}