/* * OMAP GPMC (General Purpose Memory Controller) defines * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <linux/platform_data/gpmc-omap.h> #define GPMC_CONFIG_WP 0x00000005 /* IRQ numbers in GPMC IRQ domain for legacy boot use */ #define GPMC_IRQ_FIFOEVENTENABLE 0 #define GPMC_IRQ_COUNT_EVENT 1 /** * gpmc_nand_ops - Interface between NAND and GPMC * @nand_write_buffer_empty: get the NAND write buffer empty status. */ struct gpmc_nand_ops { bool (*nand_writebuffer_empty)(void); }; struct gpmc_nand_regs; struct gpmc_onenand_info { bool sync_read; bool sync_write; int burst_len; }; #if IS_ENABLED(CONFIG_OMAP_GPMC) struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs, int cs); /** * gpmc_omap_onenand_set_timings - set optimized sync timings. * @cs: Chip Select Region * @freq: Chip frequency * @latency: Burst latency cycle count * @info: Structure describing parameters used * * Sets optimized timings for the @cs region based on @freq and @latency. * Updates the @info structure based on the GPMC settings. */ int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq, int latency, struct gpmc_onenand_info *info); #else static inline struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs, int cs) { return NULL; } static inline int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq, int latency, struct gpmc_onenand_info *info) { return -EINVAL; } #endif /* CONFIG_OMAP_GPMC */ extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t, struct gpmc_settings *gpmc_s, struct gpmc_device_timings *dev_t); struct device_node; extern int gpmc_get_client_irq(unsigned irq_config); extern unsigned int gpmc_ticks_to_ns(unsigned int ticks); extern void gpmc_cs_write_reg(int cs, int idx, u32 val); extern int gpmc_calc_divider(unsigned int sync_clk); extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t, const struct gpmc_settings *s); extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p); extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base); extern void gpmc_cs_free(int cs); extern int gpmc_configure(int cmd, int wval); extern void gpmc_read_settings_dt(struct device_node *np, struct gpmc_settings *p); extern void omap3_gpmc_save_context(void); extern void omap3_gpmc_restore_context(void); struct gpmc_timings; struct omap_nand_platform_data; struct omap_onenand_platform_data; #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2) extern int gpmc_onenand_init(struct omap_onenand_platform_data *d); #else #define board_onenand_data NULL static inline int gpmc_onenand_init(struct omap_onenand_platform_data *d) { return 0; } #endif