ARM: at91: add sama5d2 smc header

Add a header for SAMA5D2 SMC since it's not compatible with
SAMA5D3 one.

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
[wenyou: fix the wrong base address of the SMC register]
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>

arch/arm/mach-at91/include/mach/sama5d2_smc.h

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2017 Microchip Corporation.
+ *
+ * Static Memory Controllers (SMC) - System peripherals registers.
+ * Based on SAMA5D2 datasheet.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef SAMA5D2_SMC_H
+#define SAMA5D2_SMC_H
+
+#ifdef __ASSEMBLY__
+#define AT91_ASM_SMC_SETUP0	(ATMEL_BASE_SMC + 0x700)
+#define AT91_ASM_SMC_PULSE0	(ATMEL_BASE_SMC + 0x704)
+#define AT91_ASM_SMC_CYCLE0	(ATMEL_BASE_SMC + 0x708)
+#define AT91_ASM_SMC_TIMINGS0	(ATMEL_BASE_SMC + 0x70c)
+#define AT91_ASM_SMC_MODE0	(ATMEL_BASE_SMC + 0x710)
+#else
+struct at91_cs {
+	u32	setup;		/* 0x600 SMC Setup Register */
+	u32	pulse;		/* 0x604 SMC Pulse Register */
+	u32	cycle;		/* 0x608 SMC Cycle Register */
+	u32	timings;	/* 0x60C SMC Cycle Register */
+	u32	mode;		/* 0x610 SMC Mode Register */
+};
+
+struct at91_smc {
+	struct at91_cs cs[4];
+};
+#endif /*  __ASSEMBLY__ */
+
+#define AT91_SMC_SETUP_NWE(x)		(x & 0x3f)
+#define AT91_SMC_SETUP_NCS_WR(x)	((x & 0x3f) << 8)
+#define AT91_SMC_SETUP_NRD(x)		((x & 0x3f) << 16)
+#define AT91_SMC_SETUP_NCS_RD(x)	((x & 0x3f) << 24)
+
+#define AT91_SMC_PULSE_NWE(x)		(x & 0x7f)
+#define AT91_SMC_PULSE_NCS_WR(x)	((x & 0x7f) << 8)
+#define AT91_SMC_PULSE_NRD(x)		((x & 0x7f) << 16)
+#define AT91_SMC_PULSE_NCS_RD(x)	((x & 0x7f) << 24)
+
+#define AT91_SMC_CYCLE_NWE(x)		(x & 0x1ff)
+#define AT91_SMC_CYCLE_NRD(x)		((x & 0x1ff) << 16)
+
+#define AT91_SMC_TIMINGS_TCLR(x)	(x & 0xf)
+#define AT91_SMC_TIMINGS_TADL(x)	((x & 0xf) << 4)
+#define AT91_SMC_TIMINGS_TAR(x)		((x & 0xf) << 8)
+#define AT91_SMC_TIMINGS_OCMS(x)	((x & 0x1) << 12)
+#define AT91_SMC_TIMINGS_TRR(x)		((x & 0xf) << 16)
+#define AT91_SMC_TIMINGS_TWB(x)		((x & 0xf) << 24)
+#define AT91_SMC_TIMINGS_RBNSEL(x)	((x & 0xf) << 28)
+#define AT91_SMC_TIMINGS_NFSEL(x)	((x & 0x1) << 31)
+
+#define AT91_SMC_MODE_RM_NCS		0x00000000
+#define AT91_SMC_MODE_RM_NRD		0x00000001
+#define AT91_SMC_MODE_WM_NCS		0x00000000
+#define AT91_SMC_MODE_WM_NWE		0x00000002
+
+#define AT91_SMC_MODE_EXNW_DISABLE	0x00000000
+#define AT91_SMC_MODE_EXNW_FROZEN	0x00000020
+#define AT91_SMC_MODE_EXNW_READY	0x00000030
+
+#define AT91_SMC_MODE_BAT		0x00000100
+#define AT91_SMC_MODE_DBW_8		0x00000000
+#define AT91_SMC_MODE_DBW_16		0x00001000
+#define AT91_SMC_MODE_DBW_32		0x00002000
+#define AT91_SMC_MODE_TDF_CYCLE(x)	((x & 0xf) << 16)
+#define AT91_SMC_MODE_TDF		0x00100000
+#define AT91_SMC_MODE_PMEN		0x01000000
+#define AT91_SMC_MODE_PS_4		0x00000000
+#define AT91_SMC_MODE_PS_8		0x10000000
+#define AT91_SMC_MODE_PS_16		0x20000000
+#define AT91_SMC_MODE_PS_32		0x30000000
+
+#endif