1 /* SPDX-License-Identifier: GPL-2.0+ */
2
3 #ifndef __BRCMNAND_H__
4 #define __BRCMNAND_H__
5
6 #include <linux/types.h>
7 #include <linux/io.h>
8
9 struct brcmnand_soc {
10 bool (*ctlrdy_ack)(struct brcmnand_soc *soc);
11 void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en);
12 void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare,
13 bool is_param);
14 void (*read_data_bus)(struct brcmnand_soc *soc, void __iomem *flash_cache,
15 u32 *buffer, int fc_words);
16 void *ctrl;
17 };
18
brcmnand_soc_data_bus_prepare(struct brcmnand_soc * soc,bool is_param)19 static inline void brcmnand_soc_data_bus_prepare(struct brcmnand_soc *soc,
20 bool is_param)
21 {
22 if (soc && soc->prepare_data_bus)
23 soc->prepare_data_bus(soc, true, is_param);
24 }
25
brcmnand_soc_data_bus_unprepare(struct brcmnand_soc * soc,bool is_param)26 static inline void brcmnand_soc_data_bus_unprepare(struct brcmnand_soc *soc,
27 bool is_param)
28 {
29 if (soc && soc->prepare_data_bus)
30 soc->prepare_data_bus(soc, false, is_param);
31 }
32
brcmnand_readl(void __iomem * addr)33 static inline u32 brcmnand_readl(void __iomem *addr)
34 {
35 /*
36 * MIPS endianness is configured by boot strap, which also reverses all
37 * bus endianness (i.e., big-endian CPU + big endian bus ==> native
38 * endian I/O).
39 *
40 * Other architectures (e.g., ARM) either do not support big endian, or
41 * else leave I/O in little endian mode.
42 */
43 if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_SYS_BIG_ENDIAN))
44 return __raw_readl(addr);
45 else
46 return readl_relaxed(addr);
47 }
48
brcmnand_writel(u32 val,void __iomem * addr)49 static inline void brcmnand_writel(u32 val, void __iomem *addr)
50 {
51 /* See brcmnand_readl() comments */
52 if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_SYS_BIG_ENDIAN))
53 __raw_writel(val, addr);
54 else
55 writel_relaxed(val, addr);
56 }
57
58 int brcmnand_probe(struct udevice *dev, struct brcmnand_soc *soc);
59 int brcmnand_remove(struct udevice *dev);
60
61 #ifndef __UBOOT__
62 extern const struct dev_pm_ops brcmnand_pm_ops;
63 #endif /* __UBOOT__ */
64
65 #endif /* __BRCMNAND_H__ */
66