avr32: Clean up HMATRIX code

Introduce a few helper functions for HMATRIX configuration and clean up
the register definitions. Also add definitions for the HMATRIX master
and slave IDs on the AT32AP700x chips.

Also make the definitions in hmatrix.h available to board code by moving
it to <mach/hmatrix.h>

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

2 files changed, 84 insertions, 0 deletions

diff --git a/arch/avr32/mach-at32ap/include/mach/at32ap700x.h b/arch/avr32/mach-at32ap/include/mach/at32ap700x.h
index 31b44e13ec32..1e9852d65cca 100644
--- a/arch/avr32/mach-at32ap/include/mach/at32ap700x.h
+++ b/arch/avr32/mach-at32ap/include/mach/at32ap700x.h
@@ -46,6 +46,35 @@
 #define DMAC_DMAREQ_2		9
 #define DMAC_DMAREQ_3		10
 
+/* HSB master IDs */
+#define HMATRIX_MASTER_CPU_DCACHE		0
+#define HMATRIX_MASTER_CPU_ICACHE		1
+#define HMATRIX_MASTER_PDC			2
+#define HMATRIX_MASTER_ISI			3
+#define HMATRIX_MASTER_USBA			4
+#define HMATRIX_MASTER_LCDC			5
+#define HMATRIX_MASTER_MACB0			6
+#define HMATRIX_MASTER_MACB1			7
+#define HMATRIX_MASTER_DMACA_M0			8
+#define HMATRIX_MASTER_DMACA_M1			9
+
+/* HSB slave IDs */
+#define HMATRIX_SLAVE_SRAM0			0
+#define HMATRIX_SLAVE_SRAM1			1
+#define HMATRIX_SLAVE_PBA			2
+#define HMATRIX_SLAVE_PBB			3
+#define HMATRIX_SLAVE_EBI			4
+#define HMATRIX_SLAVE_USBA			5
+#define HMATRIX_SLAVE_LCDC			6
+#define HMATRIX_SLAVE_DMACA			7
+
+/* Bits in HMATRIX SFR4 (EBI) */
+#define HMATRIX_EBI_SDRAM_ENABLE		(1 << 1)
+#define HMATRIX_EBI_NAND_ENABLE			(1 << 3)
+#define HMATRIX_EBI_CF0_ENABLE			(1 << 4)
+#define HMATRIX_EBI_CF1_ENABLE			(1 << 5)
+#define HMATRIX_EBI_PULLUP_DISABLE		(1 << 8)
+
 /*
  * Base addresses of controllers that may be accessed early by
  * platform code.
diff --git a/arch/avr32/mach-at32ap/include/mach/hmatrix.h b/arch/avr32/mach-at32ap/include/mach/hmatrix.h
new file mode 100644
index 000000000000..7a368f227ebc
--- /dev/null
+++ b/arch/avr32/mach-at32ap/include/mach/hmatrix.h
@@ -0,0 +1,55 @@
+/*
+ * High-Speed Bus Matrix configuration registers
+ *
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __HMATRIX_H
+#define __HMATRIX_H
+
+extern struct clk at32_hmatrix_clk;
+
+void hmatrix_write_reg(unsigned long offset, u32 value);
+u32 hmatrix_read_reg(unsigned long offset);
+
+void hmatrix_sfr_set_bits(unsigned int slave_id, u32 mask);
+void hmatrix_sfr_clear_bits(unsigned int slave_id, u32 mask);
+
+/* Master Configuration register */
+#define HMATRIX_MCFG(m)			(0x0000 + 4 * (m))
+/* Undefined length burst limit */
+# define HMATRIX_MCFG_ULBT_INFINITE	0	/* Infinite length */
+# define HMATRIX_MCFG_ULBT_SINGLE	1	/* Single Access */
+# define HMATRIX_MCFG_ULBT_FOUR_BEAT	2	/* Four beat */
+# define HMATRIX_MCFG_ULBT_EIGHT_BEAT	3	/* Eight beat */
+# define HMATRIX_MCFG_ULBT_SIXTEEN_BEAT	4	/* Sixteen beat */
+
+/* Slave Configuration register */
+#define HMATRIX_SCFG(s)			(0x0040 + 4 * (s))
+# define HMATRIX_SCFG_SLOT_CYCLE(x)	((x) <<  0)	/* Max burst cycles */
+# define HMATRIX_SCFG_DEFMSTR_NONE	(  0 << 16)	/* No default master */
+# define HMATRIX_SCFG_DEFMSTR_LAST	(  1 << 16)	/* Last def master */
+# define HMATRIX_SCFG_DEFMSTR_FIXED	(  2 << 16)	/* Fixed def master */
+# define HMATRIX_SCFG_FIXED_DEFMSTR(m)	((m) << 18)	/* Fixed master ID */
+# define HMATRIX_SCFG_ARBT_ROUND_ROBIN	(  0 << 24)	/* RR arbitration */
+# define HMATRIX_SCFG_ARBT_FIXED_PRIO	(  1 << 24)	/* Fixed priority */
+
+/* Slave Priority register A (master 0..7) */
+#define HMATRIX_PRAS(s)			(0x0080 + 8 * (s))
+# define HMATRIX_PRAS_PRIO(m, p)	((p) << ((m) * 4))
+
+/* Slave Priority register A (master 8..15) */
+#define HMATRIX_PRBS(s)			(0x0084 + 8 * (s))
+# define HMATRIX_PRBS_PRIO(m, p)	((p) << (((m) - 8) * 4))
+
+/* Master Remap Control Register */
+#define HMATRIX_MRCR				0x0100
+# define HMATRIX_MRCR_REMAP(m)		(  1 << (m))	/* Remap master m */
+
+/* Special Function Register. Bit definitions are chip-specific */
+#define HMATRIX_SFR(s)			(0x0110 + 4 * (s))
+
+#endif /* __HMATRIX_H */