87 lines · c
1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * OMAP GPMC (General Purpose Memory Controller) defines4 */5 6#include <linux/platform_data/gpmc-omap.h>7 8#define GPMC_CONFIG_WP 0x000000059 10/* IRQ numbers in GPMC IRQ domain for legacy boot use */11#define GPMC_IRQ_FIFOEVENTENABLE 012#define GPMC_IRQ_COUNT_EVENT 113 14/**15 * gpmc_nand_ops - Interface between NAND and GPMC16 * @nand_write_buffer_empty: get the NAND write buffer empty status.17 */18struct gpmc_nand_ops {19 bool (*nand_writebuffer_empty)(void);20};21 22struct gpmc_nand_regs;23 24struct gpmc_onenand_info {25 bool sync_read;26 bool sync_write;27 int burst_len;28};29 30#if IS_ENABLED(CONFIG_OMAP_GPMC)31struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,32 int cs);33/**34 * gpmc_omap_onenand_set_timings - set optimized sync timings.35 * @cs: Chip Select Region36 * @freq: Chip frequency37 * @latency: Burst latency cycle count38 * @info: Structure describing parameters used39 *40 * Sets optimized timings for the @cs region based on @freq and @latency.41 * Updates the @info structure based on the GPMC settings.42 */43int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq,44 int latency,45 struct gpmc_onenand_info *info);46 47#else48static inline struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,49 int cs)50{51 return NULL;52}53 54static inline55int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq,56 int latency,57 struct gpmc_onenand_info *info)58{59 return -EINVAL;60}61#endif /* CONFIG_OMAP_GPMC */62 63extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t,64 struct gpmc_settings *gpmc_s,65 struct gpmc_device_timings *dev_t);66 67struct device_node;68 69extern int gpmc_get_client_irq(unsigned irq_config);70 71extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);72 73extern void gpmc_cs_write_reg(int cs, int idx, u32 val);74extern int gpmc_calc_divider(unsigned int sync_clk);75extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,76 const struct gpmc_settings *s);77extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p);78extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);79extern void gpmc_cs_free(int cs);80extern int gpmc_configure(int cmd, int wval);81extern void gpmc_read_settings_dt(struct device_node *np,82 struct gpmc_settings *p);83 84struct gpmc_timings;85struct omap_nand_platform_data;86struct omap_onenand_platform_data;87