1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * OMAP GPMC (General Purpose Memory Controller) defines
6 #include <linux/platform_data/gpmc-omap.h>
8 #define GPMC_CONFIG_WP 0x00000005
10 /* IRQ numbers in GPMC IRQ domain for legacy boot use */
11 #define GPMC_IRQ_FIFOEVENTENABLE 0
12 #define GPMC_IRQ_COUNT_EVENT 1
15 * gpmc_nand_ops - Interface between NAND and GPMC
16 * @nand_write_buffer_empty: get the NAND write buffer empty status.
18 struct gpmc_nand_ops {
19 bool (*nand_writebuffer_empty)(void);
22 struct gpmc_nand_regs;
24 struct gpmc_onenand_info {
30 #if IS_ENABLED(CONFIG_OMAP_GPMC)
31 struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,
34 * gpmc_omap_onenand_set_timings - set optimized sync timings.
35 * @cs: Chip Select Region
36 * @freq: Chip frequency
37 * @latency: Burst latency cycle count
38 * @info: Structure describing parameters used
40 * Sets optimized timings for the @cs region based on @freq and @latency.
41 * Updates the @info structure based on the GPMC settings.
43 int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq,
45 struct gpmc_onenand_info *info);
48 static inline struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,
55 int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq,
57 struct gpmc_onenand_info *info)
61 #endif /* CONFIG_OMAP_GPMC */
63 extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t,
64 struct gpmc_settings *gpmc_s,
65 struct gpmc_device_timings *dev_t);
69 extern int gpmc_get_client_irq(unsigned irq_config);
71 extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
73 extern void gpmc_cs_write_reg(int cs, int idx, u32 val);
74 extern int gpmc_calc_divider(unsigned int sync_clk);
75 extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,
76 const struct gpmc_settings *s);
77 extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p);
78 extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
79 extern void gpmc_cs_free(int cs);
80 extern int gpmc_configure(int cmd, int wval);
81 extern void gpmc_read_settings_dt(struct device_node *np,
82 struct gpmc_settings *p);
85 struct omap_nand_platform_data;
86 struct omap_onenand_platform_data;
88 #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2)
89 extern int gpmc_onenand_init(struct omap_onenand_platform_data *d);
91 #define board_onenand_data NULL
92 static inline int gpmc_onenand_init(struct omap_onenand_platform_data *d)