Atmel AT91 SoCs have a memory range reserved for SMC (Static Memory Controller) configuration. Expose those registers so that drivers can make use of the smc syscon declared in at91 DTs. Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> --- include/linux/mfd/syscon/atmel-smc.h | 60 ++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 include/linux/mfd/syscon/atmel-smc.h diff --git a/include/linux/mfd/syscon/atmel-smc.h b/include/linux/mfd/syscon/atmel-smc.h new file mode 100644 index 0000000..430f486 --- /dev/null +++ b/include/linux/mfd/syscon/atmel-smc.h @@ -0,0 +1,60 @@ +/* + * Atmel SMC (Static Memory Controller) register offsets and bit definitions. + * + * Copyright (C) 2014 Atmel + * Copyright (C) 2014 Free Electrons + * + * Author: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> + * + * 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 _LINUX_MFD_SYSCON_ATMEL_SMC_H_ +#define _LINUX_MFD_SYSCON_ATMEL_SMC_H_ + +#include <linux/regmap.h> + +#define AT91SAM9_SMC_GENERIC_OFFSET 0x00 +#define AT91SAM9_SMC_GENERIC_BLK_SZ 0x10 + +#define SAMA5_SMC_GENERIC_OFFSET 0x600 +#define SAMA5_SMC_GENERIC_BLK_SZ 0x14 + +#define AT91SAM9_SMC_SETUP(o) ((o) + 0x00) +#define AT91SAM9_SMC_NWESETUP_SHFT 0 +#define AT91SAM9_SMC_NCS_WRSETUP_SHFT 8 +#define AT91SAM9_SMC_NRDSETUP_SHFT 16 +#define AT91SAM9_SMC_NCS_NRDSETUP_SHFT 24 + +#define AT91SAM9_SMC_PULSE(o) ((o) + 0x04) + +#define AT91SAM9_SMC_CYCLE(o) ((o) + 0x08) + +#define AT91SAM9_SMC_MODE(o) ((o) + 0x0c) +#define SAMA5_SMC_MODE(o) ((o) + 0x10) +#define AT91_SMC_READMODE BIT(0) +#define AT91_SMC_WRITEMODE BIT(1) +#define AT91_SMC_EXNWMODE GENMASK(5, 4) +#define AT91_SMC_EXNWMODE_DISABLE (0 << 4) +#define AT91_SMC_EXNWMODE_FROZEN (2 << 4) +#define AT91_SMC_EXNWMODE_READY (3 << 4) +#define AT91_SMC_BAT BIT(8) +#define AT91_SMC_BAT_SELECT (0 << 8) +#define AT91_SMC_BAT_WRITE (1 << 8) +#define AT91_SMC_DBW GENMASK(13, 12) +#define AT91_SMC_DBW_8 (0 << 12) +#define AT91_SMC_DBW_16 (1 << 12) +#define AT91_SMC_DBW_32 (2 << 12) +#define AT91_SMC_TDF GENMASK(19, 16) +#define AT91_SMC_TDF_(x) (((x) & 0xf) << 16) +#define AT91_SMC_TDFMODE BIT(20) +#define AT91_SMC_PMEN BIT(24) +#define AT91_SMC_PS GENMASK(29, 28) +#define AT91_SMC_PS_4 (0 << 28) +#define AT91_SMC_PS_8 (1 << 28) +#define AT91_SMC_PS_16 (2 << 28) +#define AT91_SMC_PS_32 (3 << 28) + +#endif /* _LINUX_MFD_SYSCON_ATMEL_SMC_H_ */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
