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
gpmc_omap_get_nand_ops(struct gpmc_nand_regs * regs,int cs)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 /*--------------------------------*/
40
41 /* deprecated APIs */
42 #if IS_ENABLED(CONFIG_OMAP_GPMC)
43 void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs);
44 #else
gpmc_update_nand_reg(struct gpmc_nand_regs * reg,int cs)45 static inline void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs)
46 {
47 }
48 #endif /* CONFIG_OMAP_GPMC */
49 /*--------------------------------*/
50
51 extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t,
52 struct gpmc_settings *gpmc_s,
53 struct gpmc_device_timings *dev_t);
54
55 struct device_node;
56
57 extern int gpmc_get_client_irq(unsigned irq_config);
58
59 extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
60
61 extern void gpmc_cs_write_reg(int cs, int idx, u32 val);
62 extern int gpmc_calc_divider(unsigned int sync_clk);
63 extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,
64 const struct gpmc_settings *s);
65 extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p);
66 extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
67 extern void gpmc_cs_free(int cs);
68 extern int gpmc_configure(int cmd, int wval);
69 extern void gpmc_read_settings_dt(struct device_node *np,
70 struct gpmc_settings *p);
71
72 extern void omap3_gpmc_save_context(void);
73 extern void omap3_gpmc_restore_context(void);
74
75 struct gpmc_timings;
76 struct omap_nand_platform_data;
77 struct omap_onenand_platform_data;
78
79 #if IS_ENABLED(CONFIG_MTD_NAND_OMAP2)
80 extern int gpmc_nand_init(struct omap_nand_platform_data *d,
81 struct gpmc_timings *gpmc_t);
82 #else
gpmc_nand_init(struct omap_nand_platform_data * d,struct gpmc_timings * gpmc_t)83 static inline int gpmc_nand_init(struct omap_nand_platform_data *d,
84 struct gpmc_timings *gpmc_t)
85 {
86 return 0;
87 }
88 #endif
89
90 #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2)
91 extern int gpmc_onenand_init(struct omap_onenand_platform_data *d);
92 #else
93 #define board_onenand_data NULL
gpmc_onenand_init(struct omap_onenand_platform_data * d)94 static inline int gpmc_onenand_init(struct omap_onenand_platform_data *d)
95 {
96 return 0;
97 }
98 #endif
99