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Subject[PATCH 2/6] ARCv2: MCIP: Add structure for build register of IDU
Date
This structure is necessary for retrieving of supported
number of common interrupts in IDU interrupt controller.

Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
---
include/soc/arc/mcip.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/include/soc/arc/mcip.h b/include/soc/arc/mcip.h
index 6902c2a..798c01b 100644
--- a/include/soc/arc/mcip.h
+++ b/include/soc/arc/mcip.h
@@ -14,6 +14,7 @@
#include <soc/arc/aux.h>

#define ARC_REG_MCIP_BCR 0x0d0
+#define ARC_REG_MCIP_IDU_BCR 0x0D5
#define ARC_REG_MCIP_CMD 0x600
#define ARC_REG_MCIP_WDATA 0x601
#define ARC_REG_MCIP_READBACK 0x602
@@ -69,6 +70,22 @@ struct mcip_bcr {
#endif
};

+struct mcip_idu_bcr {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int pad:21, cirqnum:3, ver:8;
+#else
+ unsigned int ver:8, cirqnum:3, pad:21;
+#endif
+};
+
+
+/*
+ * Build register for IDU contains not an actual number of supported common
+ * interrupts but an exponent of 2 which must be multiplied by 4 to
+ * get a number of supported common interrupts.
+ */
+#define mcip_idu_bcr_to_nr_irqs(bcr) (4 * (1 << (bcr).cirqnum))
+
/*
* MCIP programming model
*
--
2.7.4

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