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linux-headers-6.8.0-83
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atmel-smc.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * Atmel SMC (Static Memory Controller) register offsets and bit definitions. * * Copyright (C) 2014 Atmel * Copyright (C) 2014 Free Electrons * * Author: Boris Brezillon <boris.brezillon@free-electrons.com> */ #ifndef _LINUX_MFD_SYSCON_ATMEL_SMC_H_ #define _LINUX_MFD_SYSCON_ATMEL_SMC_H_ #include <linux/kernel.h> #include <linux/of.h> #include <linux/regmap.h> #define ATMEL_SMC_SETUP(cs) (((cs) * 0x10)) #define ATMEL_HSMC_SETUP(layout, cs) \ ((layout)->timing_regs_offset + ((cs) * 0x14)) #define ATMEL_SMC_PULSE(cs) (((cs) * 0x10) + 0x4) #define ATMEL_HSMC_PULSE(layout, cs) \ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0x4) #define ATMEL_SMC_CYCLE(cs) (((cs) * 0x10) + 0x8) #define ATMEL_HSMC_CYCLE(layout, cs) \ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0x8) #define ATMEL_SMC_NWE_SHIFT 0 #define ATMEL_SMC_NCS_WR_SHIFT 8 #define ATMEL_SMC_NRD_SHIFT 16 #define ATMEL_SMC_NCS_RD_SHIFT 24 #define ATMEL_SMC_MODE(cs) (((cs) * 0x10) + 0xc) #define ATMEL_HSMC_MODE(layout, cs) \ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0x10) #define ATMEL_SMC_MODE_READMODE_MASK BIT(0) #define ATMEL_SMC_MODE_READMODE_NCS (0 << 0) #define ATMEL_SMC_MODE_READMODE_NRD (1 << 0) #define ATMEL_SMC_MODE_WRITEMODE_MASK BIT(1) #define ATMEL_SMC_MODE_WRITEMODE_NCS (0 << 1) #define ATMEL_SMC_MODE_WRITEMODE_NWE (1 << 1) #define ATMEL_SMC_MODE_EXNWMODE_MASK GENMASK(5, 4) #define ATMEL_SMC_MODE_EXNWMODE_DISABLE (0 << 4) #define ATMEL_SMC_MODE_EXNWMODE_FROZEN (2 << 4) #define ATMEL_SMC_MODE_EXNWMODE_READY (3 << 4) #define ATMEL_SMC_MODE_BAT_MASK BIT(8) #define ATMEL_SMC_MODE_BAT_SELECT (0 << 8) #define ATMEL_SMC_MODE_BAT_WRITE (1 << 8) #define ATMEL_SMC_MODE_DBW_MASK GENMASK(13, 12) #define ATMEL_SMC_MODE_DBW_8 (0 << 12) #define ATMEL_SMC_MODE_DBW_16 (1 << 12) #define ATMEL_SMC_MODE_DBW_32 (2 << 12) #define ATMEL_SMC_MODE_TDF_MASK GENMASK(19, 16) #define ATMEL_SMC_MODE_TDF(x) (((x) - 1) << 16) #define ATMEL_SMC_MODE_TDF_MAX 16 #define ATMEL_SMC_MODE_TDF_MIN 1 #define ATMEL_SMC_MODE_TDFMODE_OPTIMIZED BIT(20) #define ATMEL_SMC_MODE_PMEN BIT(24) #define ATMEL_SMC_MODE_PS_MASK GENMASK(29, 28) #define ATMEL_SMC_MODE_PS_4 (0 << 28) #define ATMEL_SMC_MODE_PS_8 (1 << 28) #define ATMEL_SMC_MODE_PS_16 (2 << 28) #define ATMEL_SMC_MODE_PS_32 (3 << 28) #define ATMEL_HSMC_TIMINGS(layout, cs) \ ((layout)->timing_regs_offset + ((cs) * 0x14) + 0xc) #define ATMEL_HSMC_TIMINGS_OCMS BIT(12) #define ATMEL_HSMC_TIMINGS_RBNSEL(x) ((x) << 28) #define ATMEL_HSMC_TIMINGS_NFSEL BIT(31) #define ATMEL_HSMC_TIMINGS_TCLR_SHIFT 0 #define ATMEL_HSMC_TIMINGS_TADL_SHIFT 4 #define ATMEL_HSMC_TIMINGS_TAR_SHIFT 8 #define ATMEL_HSMC_TIMINGS_TRR_SHIFT 16 #define ATMEL_HSMC_TIMINGS_TWB_SHIFT 24 struct atmel_hsmc_reg_layout { unsigned int timing_regs_offset; }; /** * struct atmel_smc_cs_conf - SMC CS config as described in the datasheet. * @setup: NCS/NWE/NRD setup timings (not applicable to at91rm9200) * @pulse: NCS/NWE/NRD pulse timings (not applicable to at91rm9200) * @cycle: NWE/NRD cycle timings (not applicable to at91rm9200) * @timings: advanced NAND related timings (only applicable to HSMC) * @mode: all kind of config parameters (see the fields definition above). * The mode fields are different on at91rm9200 */ struct atmel_smc_cs_conf { u32 setup; u32 pulse; u32 cycle; u32 timings; u32 mode; }; void atmel_smc_cs_conf_init(struct atmel_smc_cs_conf *conf); int atmel_smc_cs_conf_set_timing(struct atmel_smc_cs_conf *conf, unsigned int shift, unsigned int ncycles); int atmel_smc_cs_conf_set_setup(struct atmel_smc_cs_conf *conf, unsigned int shift, unsigned int ncycles); int atmel_smc_cs_conf_set_pulse(struct atmel_smc_cs_conf *conf, unsigned int shift, unsigned int ncycles); int atmel_smc_cs_conf_set_cycle(struct atmel_smc_cs_conf *conf, unsigned int shift, unsigned int ncycles); void atmel_smc_cs_conf_apply(struct regmap *regmap, int cs, const struct atmel_smc_cs_conf *conf); void atmel_hsmc_cs_conf_apply(struct regmap *regmap, const struct atmel_hsmc_reg_layout *reglayout, int cs, const struct atmel_smc_cs_conf *conf); void atmel_smc_cs_conf_get(struct regmap *regmap, int cs, struct atmel_smc_cs_conf *conf); void atmel_hsmc_cs_conf_get(struct regmap *regmap, const struct atmel_hsmc_reg_layout *reglayout, int cs, struct atmel_smc_cs_conf *conf); const struct atmel_hsmc_reg_layout * atmel_hsmc_get_reg_layout(struct device_node *np); #endif /* _LINUX_MFD_SYSCON_ATMEL_SMC_H_ */
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