1 /* 2 * OMAP GPMC (General Purpose Memory Controller) defines 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the 6 * Free Software Foundation; either version 2 of the License, or (at your 7 * option) any later version. 8 */ 9 10 #include <linux/platform_data/gpmc-omap.h> 11 12 #define GPMC_CONFIG_WP 0x00000005 13 14 /* IRQ numbers in GPMC IRQ domain for legacy boot use */ 15 #define GPMC_IRQ_FIFOEVENTENABLE 0 16 #define GPMC_IRQ_COUNT_EVENT 1 17 18 /** 19 * gpmc_nand_ops - Interface between NAND and GPMC 20 * @nand_write_buffer_empty: get the NAND write buffer empty status. 21 */ 22 struct gpmc_nand_ops { 23 bool (*nand_writebuffer_empty)(void); 24 }; 25 26 struct gpmc_nand_regs; 27 28 #if IS_ENABLED(CONFIG_OMAP_GPMC) 29 struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs, 30 int cs); 31 #else 32 static inline struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs, 33 int cs) 34 { 35 return NULL; 36 } 37 #endif /* CONFIG_OMAP_GPMC */ 38 39 extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t, 40 struct gpmc_settings *gpmc_s, 41 struct gpmc_device_timings *dev_t); 42 43 struct device_node; 44 45 extern int gpmc_get_client_irq(unsigned irq_config); 46 47 extern unsigned int gpmc_ticks_to_ns(unsigned int ticks); 48 49 extern void gpmc_cs_write_reg(int cs, int idx, u32 val); 50 extern int gpmc_calc_divider(unsigned int sync_clk); 51 extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t, 52 const struct gpmc_settings *s); 53 extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p); 54 extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base); 55 extern void gpmc_cs_free(int cs); 56 extern int gpmc_configure(int cmd, int wval); 57 extern void gpmc_read_settings_dt(struct device_node *np, 58 struct gpmc_settings *p); 59 60 extern void omap3_gpmc_save_context(void); 61 extern void omap3_gpmc_restore_context(void); 62 63 struct gpmc_timings; 64 struct omap_nand_platform_data; 65 struct omap_onenand_platform_data; 66 67 #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2) 68 extern int gpmc_onenand_init(struct omap_onenand_platform_data *d); 69 #else 70 #define board_onenand_data NULL 71 static inline int gpmc_onenand_init(struct omap_onenand_platform_data *d) 72 { 73 return 0; 74 } 75 #endif 76