include: fpga: adi-axi-common.h: add common regs & defs header

The AXI HDL cores provided for Analog Devices reference designs all share
some common base registers (e.g. version register at address 0x00).

To reduce duplication for this, a common header is added to define these
registers as well as bitfields & macros to work with these registers.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/include/linux/fpga/adi-axi-common.h b/include/linux/fpga/adi-axi-common.h
new file mode 100644 (file)
index 0000000..7fc95d5
--- /dev/null
+++ b/include/linux/fpga/adi-axi-common.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Analog Devices AXI common registers & definitions
+ *
+ * Copyright 2019 Analog Devices Inc.
+ *
+ * https://wiki.analog.com/resources/fpga/docs/axi_ip
+ * https://wiki.analog.com/resources/fpga/docs/hdl/regmap
+ */
+
+#ifndef ADI_AXI_COMMON_H_
+#define ADI_AXI_COMMON_H_
+
+#define        ADI_AXI_REG_VERSION                     0x0000
+
+#define ADI_AXI_PCORE_VER(major, minor, patch) \
+       (((major) << 16) | ((minor) << 8) | (patch))
+
+#endif /* ADI_AXI_COMMON_H_ */