]>
Commit | Line | Data |
---|---|---|
83d290c5 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
d25ce7d2 | 2 | /* |
a5e8199a | 3 | * Common SPI flash Interface |
d25ce7d2 HS |
4 | * |
5 | * Copyright (C) 2008 Atmel Corporation | |
a5e8199a | 6 | * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc. |
d25ce7d2 | 7 | */ |
a5e8199a | 8 | |
d25ce7d2 HS |
9 | #ifndef _SPI_FLASH_H_ |
10 | #define _SPI_FLASH_H_ | |
11 | ||
4c2dbefd | 12 | #include <dm.h> /* Because we dereference struct udevice here */ |
e06ab654 | 13 | #include <linux/types.h> |
d25ce7d2 | 14 | |
88e34e5f NK |
15 | #ifndef CONFIG_SF_DEFAULT_SPEED |
16 | # define CONFIG_SF_DEFAULT_SPEED 1000000 | |
17 | #endif | |
18 | #ifndef CONFIG_SF_DEFAULT_MODE | |
19 | # define CONFIG_SF_DEFAULT_MODE SPI_MODE_3 | |
20 | #endif | |
21 | #ifndef CONFIG_SF_DEFAULT_CS | |
22 | # define CONFIG_SF_DEFAULT_CS 0 | |
23 | #endif | |
24 | #ifndef CONFIG_SF_DEFAULT_BUS | |
25 | # define CONFIG_SF_DEFAULT_BUS 0 | |
26 | #endif | |
27 | ||
ff0960f9 | 28 | struct spi_slave; |
33adfb5f | 29 | |
7ab35d92 JT |
30 | /** |
31 | * struct spi_flash - SPI flash structure | |
32 | * | |
33 | * @spi: SPI slave | |
5d69df35 | 34 | * @dev: SPI flash device |
7ab35d92 | 35 | * @name: Name of SPI flash |
5d69df35 | 36 | * @dual_flash: Indicates dual flash memories - dual stacked, parallel |
056fbc73 | 37 | * @shift: Flash shift useful in dual parallel |
1fabefdd | 38 | * @flags: Indication of spi flash flags |
7ab35d92 JT |
39 | * @size: Total flash size |
40 | * @page_size: Write (page) size | |
41 | * @sector_size: Sector size | |
5d69df35 | 42 | * @erase_size: Erase size |
7ab35d92 JT |
43 | * @bank_read_cmd: Bank read cmd |
44 | * @bank_write_cmd: Bank write cmd | |
45 | * @bank_curr: Current flash bank | |
7ab35d92 | 46 | * @erase_cmd: Erase cmd 4K, 32K, 64K |
3163aaa6 JT |
47 | * @read_cmd: Read cmd - Array Fast, Extn read and quad read. |
48 | * @write_cmd: Write cmd - page and quad program. | |
5d69df35 JT |
49 | * @dummy_byte: Dummy cycles for read operation. |
50 | * @memory_map: Address of read-only SPI flash access | |
c3c016cf FE |
51 | * @flash_lock: lock a region of the SPI Flash |
52 | * @flash_unlock: unlock a region of the SPI Flash | |
53 | * @flash_is_locked: check if a region of the SPI Flash is completely locked | |
7ab35d92 JT |
54 | * @read: Flash read ops: Read len bytes at offset into buf |
55 | * Supported cmds: Fast Array Read | |
801cec59 | 56 | * @write: Flash write ops: Write len bytes from buf into offset |
7ab35d92 JT |
57 | * Supported cmds: Page Program |
58 | * @erase: Flash erase ops: Erase len bytes from offset | |
59 | * Supported cmds: Sector erase 4K, 32K, 64K | |
801cec59 | 60 | * return 0 - Success, 1 - Failure |
7ab35d92 | 61 | */ |
d25ce7d2 HS |
62 | struct spi_flash { |
63 | struct spi_slave *spi; | |
d15e74f1 | 64 | #ifdef CONFIG_DM_SPI_FLASH |
4c2dbefd | 65 | struct udevice *dev; |
4c2dbefd | 66 | #endif |
7ab35d92 | 67 | const char *name; |
f77f4691 | 68 | u8 dual_flash; |
056fbc73 | 69 | u8 shift; |
1fabefdd | 70 | u16 flags; |
d25ce7d2 | 71 | |
7ab35d92 JT |
72 | u32 size; |
73 | u32 page_size; | |
74 | u32 sector_size; | |
75 | u32 erase_size; | |
1dcd6d03 | 76 | #ifdef CONFIG_SPI_FLASH_BAR |
7ab35d92 JT |
77 | u8 bank_read_cmd; |
78 | u8 bank_write_cmd; | |
79 | u8 bank_curr; | |
1dcd6d03 | 80 | #endif |
7ab35d92 | 81 | u8 erase_cmd; |
4e09cc1e | 82 | u8 read_cmd; |
3163aaa6 | 83 | u8 write_cmd; |
ff063ed4 | 84 | u8 dummy_byte; |
615a1561 | 85 | |
7ab35d92 | 86 | void *memory_map; |
c3c016cf FE |
87 | |
88 | int (*flash_lock)(struct spi_flash *flash, u32 ofs, size_t len); | |
89 | int (*flash_unlock)(struct spi_flash *flash, u32 ofs, size_t len); | |
90 | int (*flash_is_locked)(struct spi_flash *flash, u32 ofs, size_t len); | |
4c2dbefd SG |
91 | #ifndef CONFIG_DM_SPI_FLASH |
92 | /* | |
93 | * These are not strictly needed for driver model, but keep them here | |
d15e74f1 | 94 | * while the transition is in progress. |
4c2dbefd SG |
95 | * |
96 | * Normally each driver would provide its own operations, but for | |
97 | * SPI flash most chips use the same algorithms. One approach is | |
98 | * to create a 'common' SPI flash device which knows how to talk | |
99 | * to most devices, and then allow other drivers to be used instead | |
d15e74f1 | 100 | * if required, perhaps with a way of scanning through the list to |
4c2dbefd SG |
101 | * find the driver that matches the device. |
102 | */ | |
7ab35d92 JT |
103 | int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf); |
104 | int (*write)(struct spi_flash *flash, u32 offset, size_t len, | |
105 | const void *buf); | |
106 | int (*erase)(struct spi_flash *flash, u32 offset, size_t len); | |
4c2dbefd SG |
107 | #endif |
108 | }; | |
109 | ||
110 | struct dm_spi_flash_ops { | |
111 | int (*read)(struct udevice *dev, u32 offset, size_t len, void *buf); | |
112 | int (*write)(struct udevice *dev, u32 offset, size_t len, | |
113 | const void *buf); | |
114 | int (*erase)(struct udevice *dev, u32 offset, size_t len); | |
a58986ca SG |
115 | /** |
116 | * get_sw_write_prot() - Check state of software write-protect feature | |
117 | * | |
118 | * SPI flash chips can lock a region of the flash defined by a | |
119 | * 'protected area'. This function checks if this protected area is | |
120 | * defined. | |
121 | * | |
122 | * @dev: SPI flash device | |
123 | * @return 0 if no region is write-protected, 1 if a region is | |
124 | * write-protected, -ENOSYS if the driver does not implement this, | |
125 | * other -ve value on error | |
126 | */ | |
127 | int (*get_sw_write_prot)(struct udevice *dev); | |
d25ce7d2 HS |
128 | }; |
129 | ||
4c2dbefd SG |
130 | /* Access the serial operations for a device */ |
131 | #define sf_get_ops(dev) ((struct dm_spi_flash_ops *)(dev)->driver->ops) | |
132 | ||
133 | #ifdef CONFIG_DM_SPI_FLASH | |
8d987abc SG |
134 | /** |
135 | * spi_flash_read_dm() - Read data from SPI flash | |
136 | * | |
137 | * @dev: SPI flash device | |
138 | * @offset: Offset into device in bytes to read from | |
139 | * @len: Number of bytes to read | |
140 | * @buf: Buffer to put the data that is read | |
141 | * @return 0 if OK, -ve on error | |
142 | */ | |
143 | int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf); | |
144 | ||
145 | /** | |
146 | * spi_flash_write_dm() - Write data to SPI flash | |
147 | * | |
148 | * @dev: SPI flash device | |
149 | * @offset: Offset into device in bytes to write to | |
150 | * @len: Number of bytes to write | |
151 | * @buf: Buffer containing bytes to write | |
152 | * @return 0 if OK, -ve on error | |
153 | */ | |
154 | int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len, | |
155 | const void *buf); | |
156 | ||
157 | /** | |
158 | * spi_flash_erase_dm() - Erase blocks of the SPI flash | |
159 | * | |
160 | * Note that @len must be a muiltiple of the flash sector size. | |
161 | * | |
162 | * @dev: SPI flash device | |
163 | * @offset: Offset into device in bytes to start erasing | |
164 | * @len: Number of bytes to erase | |
165 | * @return 0 if OK, -ve on error | |
166 | */ | |
167 | int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len); | |
168 | ||
a58986ca SG |
169 | /** |
170 | * spl_flash_get_sw_write_prot() - Check state of software write-protect feature | |
171 | * | |
172 | * SPI flash chips can lock a region of the flash defined by a | |
173 | * 'protected area'. This function checks if this protected area is | |
174 | * defined. | |
175 | * | |
176 | * @dev: SPI flash device | |
177 | * @return 0 if no region is write-protected, 1 if a region is | |
178 | * write-protected, -ENOSYS if the driver does not implement this, | |
179 | * other -ve value on error | |
180 | */ | |
181 | int spl_flash_get_sw_write_prot(struct udevice *dev); | |
182 | ||
4c2dbefd SG |
183 | int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, |
184 | unsigned int max_hz, unsigned int spi_mode, | |
185 | struct udevice **devp); | |
186 | ||
187 | /* Compatibility function - this is the old U-Boot API */ | |
188 | struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, | |
189 | unsigned int max_hz, unsigned int spi_mode); | |
190 | ||
191 | /* Compatibility function - this is the old U-Boot API */ | |
192 | void spi_flash_free(struct spi_flash *flash); | |
193 | ||
4c2dbefd | 194 | static inline int spi_flash_read(struct spi_flash *flash, u32 offset, |
8d987abc | 195 | size_t len, void *buf) |
4c2dbefd | 196 | { |
8d987abc | 197 | return spi_flash_read_dm(flash->dev, offset, len, buf); |
4c2dbefd SG |
198 | } |
199 | ||
200 | static inline int spi_flash_write(struct spi_flash *flash, u32 offset, | |
8d987abc | 201 | size_t len, const void *buf) |
4c2dbefd | 202 | { |
8d987abc | 203 | return spi_flash_write_dm(flash->dev, offset, len, buf); |
4c2dbefd SG |
204 | } |
205 | ||
206 | static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, | |
8d987abc | 207 | size_t len) |
4c2dbefd | 208 | { |
8d987abc | 209 | return spi_flash_erase_dm(flash->dev, offset, len); |
4c2dbefd SG |
210 | } |
211 | ||
212 | struct sandbox_state; | |
213 | ||
214 | int sandbox_sf_bind_emul(struct sandbox_state *state, int busnum, int cs, | |
008dcddf | 215 | struct udevice *bus, ofnode node, const char *spec); |
4c2dbefd SG |
216 | |
217 | void sandbox_sf_unbind_emul(struct sandbox_state *state, int busnum, int cs); | |
218 | ||
219 | #else | |
d25ce7d2 HS |
220 | struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, |
221 | unsigned int max_hz, unsigned int spi_mode); | |
0efc0249 | 222 | |
d25ce7d2 HS |
223 | void spi_flash_free(struct spi_flash *flash); |
224 | ||
225 | static inline int spi_flash_read(struct spi_flash *flash, u32 offset, | |
226 | size_t len, void *buf) | |
227 | { | |
228 | return flash->read(flash, offset, len, buf); | |
229 | } | |
230 | ||
231 | static inline int spi_flash_write(struct spi_flash *flash, u32 offset, | |
232 | size_t len, const void *buf) | |
233 | { | |
234 | return flash->write(flash, offset, len, buf); | |
235 | } | |
236 | ||
237 | static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, | |
238 | size_t len) | |
239 | { | |
240 | return flash->erase(flash, offset, len); | |
241 | } | |
4c2dbefd | 242 | #endif |
d25ce7d2 | 243 | |
c3c016cf FE |
244 | static inline int spi_flash_protect(struct spi_flash *flash, u32 ofs, u32 len, |
245 | bool prot) | |
246 | { | |
439fcb9b | 247 | if (!flash->flash_lock || !flash->flash_unlock) |
c3c016cf FE |
248 | return -EOPNOTSUPP; |
249 | ||
250 | if (prot) | |
251 | return flash->flash_lock(flash, ofs, len); | |
252 | else | |
253 | return flash->flash_unlock(flash, ofs, len); | |
254 | } | |
255 | ||
d25ce7d2 | 256 | #endif /* _SPI_FLASH_H_ */ |