1 /* SPDX-License-Identifier: GPL-2.0+ */ 1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /* 2 /*
3 * Copyright (C) 2018 Exceet Electronics GmbH 3 * Copyright (C) 2018 Exceet Electronics GmbH
4 * Copyright (C) 2018 Bootlin 4 * Copyright (C) 2018 Bootlin
5 * 5 *
6 * Author: 6 * Author:
7 * Peter Pan <peterpandong@micron.com> 7 * Peter Pan <peterpandong@micron.com>
8 * Boris Brezillon <boris.brezillon@bootl 8 * Boris Brezillon <boris.brezillon@bootlin.com>
9 */ 9 */
10 10
11 #ifndef __LINUX_SPI_MEM_H 11 #ifndef __LINUX_SPI_MEM_H
12 #define __LINUX_SPI_MEM_H 12 #define __LINUX_SPI_MEM_H
13 13
14 #include <linux/spi/spi.h> 14 #include <linux/spi/spi.h>
15 15
16 #define SPI_MEM_OP_CMD(__opcode, __buswidth) 16 #define SPI_MEM_OP_CMD(__opcode, __buswidth) \
17 { 17 { \
18 .buswidth = __buswidth, 18 .buswidth = __buswidth, \
19 .opcode = __opcode, 19 .opcode = __opcode, \
20 .nbytes = 1, 20 .nbytes = 1, \
21 } 21 }
22 22
23 #define SPI_MEM_OP_ADDR(__nbytes, __val, __bus 23 #define SPI_MEM_OP_ADDR(__nbytes, __val, __buswidth) \
24 { 24 { \
25 .nbytes = __nbytes, 25 .nbytes = __nbytes, \
26 .val = __val, 26 .val = __val, \
27 .buswidth = __buswidth, 27 .buswidth = __buswidth, \
28 } 28 }
29 29
30 #define SPI_MEM_OP_NO_ADDR { } 30 #define SPI_MEM_OP_NO_ADDR { }
31 31
32 #define SPI_MEM_OP_DUMMY(__nbytes, __buswidth) 32 #define SPI_MEM_OP_DUMMY(__nbytes, __buswidth) \
33 { 33 { \
34 .nbytes = __nbytes, 34 .nbytes = __nbytes, \
35 .buswidth = __buswidth, 35 .buswidth = __buswidth, \
36 } 36 }
37 37
38 #define SPI_MEM_OP_NO_DUMMY { } 38 #define SPI_MEM_OP_NO_DUMMY { }
39 39
40 #define SPI_MEM_OP_DATA_IN(__nbytes, __buf, __ 40 #define SPI_MEM_OP_DATA_IN(__nbytes, __buf, __buswidth) \
41 { 41 { \
42 .dir = SPI_MEM_DATA_IN, 42 .dir = SPI_MEM_DATA_IN, \
43 .nbytes = __nbytes, 43 .nbytes = __nbytes, \
44 .buf.in = __buf, 44 .buf.in = __buf, \
45 .buswidth = __buswidth, 45 .buswidth = __buswidth, \
46 } 46 }
47 47
48 #define SPI_MEM_OP_DATA_OUT(__nbytes, __buf, _ 48 #define SPI_MEM_OP_DATA_OUT(__nbytes, __buf, __buswidth) \
49 { 49 { \
50 .dir = SPI_MEM_DATA_OUT, 50 .dir = SPI_MEM_DATA_OUT, \
51 .nbytes = __nbytes, 51 .nbytes = __nbytes, \
52 .buf.out = __buf, 52 .buf.out = __buf, \
53 .buswidth = __buswidth, 53 .buswidth = __buswidth, \
54 } 54 }
55 55
56 #define SPI_MEM_OP_NO_DATA { } 56 #define SPI_MEM_OP_NO_DATA { }
57 57
58 /** 58 /**
59 * enum spi_mem_data_dir - describes the direc 59 * enum spi_mem_data_dir - describes the direction of a SPI memory data
60 * transfer from the c 60 * transfer from the controller perspective
61 * @SPI_MEM_NO_DATA: no data transferred 61 * @SPI_MEM_NO_DATA: no data transferred
62 * @SPI_MEM_DATA_IN: data coming from the SPI 62 * @SPI_MEM_DATA_IN: data coming from the SPI memory
63 * @SPI_MEM_DATA_OUT: data sent to the SPI mem 63 * @SPI_MEM_DATA_OUT: data sent to the SPI memory
64 */ 64 */
65 enum spi_mem_data_dir { 65 enum spi_mem_data_dir {
66 SPI_MEM_NO_DATA, 66 SPI_MEM_NO_DATA,
67 SPI_MEM_DATA_IN, 67 SPI_MEM_DATA_IN,
68 SPI_MEM_DATA_OUT, 68 SPI_MEM_DATA_OUT,
69 }; 69 };
70 70
71 /** 71 /**
72 * struct spi_mem_op - describes a SPI memory 72 * struct spi_mem_op - describes a SPI memory operation
73 * @cmd.nbytes: number of opcode bytes (only 1 73 * @cmd.nbytes: number of opcode bytes (only 1 or 2 are valid). The opcode is
74 * sent MSB-first. 74 * sent MSB-first.
75 * @cmd.buswidth: number of IO lines used to t 75 * @cmd.buswidth: number of IO lines used to transmit the command
76 * @cmd.opcode: operation opcode 76 * @cmd.opcode: operation opcode
77 * @cmd.dtr: whether the command opcode should 77 * @cmd.dtr: whether the command opcode should be sent in DTR mode or not
78 * @addr.nbytes: number of address bytes to se 78 * @addr.nbytes: number of address bytes to send. Can be zero if the operation
79 * does not need to send an addr 79 * does not need to send an address
80 * @addr.buswidth: number of IO lines used to 80 * @addr.buswidth: number of IO lines used to transmit the address cycles
81 * @addr.dtr: whether the address should be se 81 * @addr.dtr: whether the address should be sent in DTR mode or not
82 * @addr.val: address value. This value is alw 82 * @addr.val: address value. This value is always sent MSB first on the bus.
83 * Note that only @addr.nbytes are 83 * Note that only @addr.nbytes are taken into account in this
84 * address value, so users should m 84 * address value, so users should make sure the value fits in the
85 * assigned number of bytes. 85 * assigned number of bytes.
86 * @dummy.nbytes: number of dummy bytes to sen 86 * @dummy.nbytes: number of dummy bytes to send after an opcode or address. Can
87 * be zero if the operation doe 87 * be zero if the operation does not require dummy bytes
88 * @dummy.buswidth: number of IO lanes used to 88 * @dummy.buswidth: number of IO lanes used to transmit the dummy bytes
89 * @dummy.dtr: whether the dummy bytes should 89 * @dummy.dtr: whether the dummy bytes should be sent in DTR mode or not
90 * @data.buswidth: number of IO lanes used to 90 * @data.buswidth: number of IO lanes used to send/receive the data
91 * @data.dtr: whether the data should be sent 91 * @data.dtr: whether the data should be sent in DTR mode or not
92 * @data.ecc: whether error correction is requ 92 * @data.ecc: whether error correction is required or not
93 * @data.dir: direction of the transfer 93 * @data.dir: direction of the transfer
94 * @data.nbytes: number of data bytes to send/ 94 * @data.nbytes: number of data bytes to send/receive. Can be zero if the
95 * operation does not involve tr 95 * operation does not involve transferring data
96 * @data.buf.in: input buffer (must be DMA-abl 96 * @data.buf.in: input buffer (must be DMA-able)
97 * @data.buf.out: output buffer (must be DMA-a 97 * @data.buf.out: output buffer (must be DMA-able)
98 */ 98 */
99 struct spi_mem_op { 99 struct spi_mem_op {
100 struct { 100 struct {
101 u8 nbytes; 101 u8 nbytes;
102 u8 buswidth; 102 u8 buswidth;
103 u8 dtr : 1; 103 u8 dtr : 1;
104 u8 __pad : 7; <<
105 u16 opcode; 104 u16 opcode;
106 } cmd; 105 } cmd;
107 106
108 struct { 107 struct {
109 u8 nbytes; 108 u8 nbytes;
110 u8 buswidth; 109 u8 buswidth;
111 u8 dtr : 1; 110 u8 dtr : 1;
112 u8 __pad : 7; <<
113 u64 val; 111 u64 val;
114 } addr; 112 } addr;
115 113
116 struct { 114 struct {
117 u8 nbytes; 115 u8 nbytes;
118 u8 buswidth; 116 u8 buswidth;
119 u8 dtr : 1; 117 u8 dtr : 1;
120 u8 __pad : 7; <<
121 } dummy; 118 } dummy;
122 119
123 struct { 120 struct {
124 u8 buswidth; 121 u8 buswidth;
125 u8 dtr : 1; 122 u8 dtr : 1;
126 u8 ecc : 1; 123 u8 ecc : 1;
127 u8 __pad : 6; <<
128 enum spi_mem_data_dir dir; 124 enum spi_mem_data_dir dir;
129 unsigned int nbytes; 125 unsigned int nbytes;
130 union { 126 union {
131 void *in; 127 void *in;
132 const void *out; 128 const void *out;
133 } buf; 129 } buf;
134 } data; 130 } data;
135 }; 131 };
136 132
137 #define SPI_MEM_OP(__cmd, __addr, __dummy, __d 133 #define SPI_MEM_OP(__cmd, __addr, __dummy, __data) \
138 { 134 { \
139 .cmd = __cmd, 135 .cmd = __cmd, \
140 .addr = __addr, 136 .addr = __addr, \
141 .dummy = __dummy, 137 .dummy = __dummy, \
142 .data = __data, 138 .data = __data, \
143 } 139 }
144 140
145 /** 141 /**
146 * struct spi_mem_dirmap_info - Direct mapping 142 * struct spi_mem_dirmap_info - Direct mapping information
147 * @op_tmpl: operation template that should be 143 * @op_tmpl: operation template that should be used by the direct mapping when
148 * the memory device is accessed 144 * the memory device is accessed
149 * @offset: absolute offset this direct mappin 145 * @offset: absolute offset this direct mapping is pointing to
150 * @length: length in byte of this direct mapp 146 * @length: length in byte of this direct mapping
151 * 147 *
152 * These information are used by the controlle 148 * These information are used by the controller specific implementation to know
153 * the portion of memory that is directly mapp 149 * the portion of memory that is directly mapped and the spi_mem_op that should
154 * be used to access the device. 150 * be used to access the device.
155 * A direct mapping is only valid for one dire 151 * A direct mapping is only valid for one direction (read or write) and this
156 * direction is directly encoded in the ->op_t 152 * direction is directly encoded in the ->op_tmpl.data.dir field.
157 */ 153 */
158 struct spi_mem_dirmap_info { 154 struct spi_mem_dirmap_info {
159 struct spi_mem_op op_tmpl; 155 struct spi_mem_op op_tmpl;
160 u64 offset; 156 u64 offset;
161 u64 length; 157 u64 length;
162 }; 158 };
163 159
164 /** 160 /**
165 * struct spi_mem_dirmap_desc - Direct mapping 161 * struct spi_mem_dirmap_desc - Direct mapping descriptor
166 * @mem: the SPI memory device this direct map 162 * @mem: the SPI memory device this direct mapping is attached to
167 * @info: information passed at direct mapping 163 * @info: information passed at direct mapping creation time
168 * @nodirmap: set to 1 if the SPI controller d 164 * @nodirmap: set to 1 if the SPI controller does not implement
169 * ->mem_ops->dirmap_create() or wh 165 * ->mem_ops->dirmap_create() or when this function returned an
170 * error. If @nodirmap is true, all 166 * error. If @nodirmap is true, all spi_mem_dirmap_{read,write}()
171 * calls will use spi_mem_exec_op() 167 * calls will use spi_mem_exec_op() to access the memory. This is a
172 * degraded mode that allows spi_me 168 * degraded mode that allows spi_mem drivers to use the same code
173 * no matter whether the controller 169 * no matter whether the controller supports direct mapping or not
174 * @priv: field pointing to controller specifi 170 * @priv: field pointing to controller specific data
175 * 171 *
176 * Common part of a direct mapping descriptor. 172 * Common part of a direct mapping descriptor. This object is created by
177 * spi_mem_dirmap_create() and controller impl 173 * spi_mem_dirmap_create() and controller implementation of ->create_dirmap()
178 * can create/attach direct mapping resources 174 * can create/attach direct mapping resources to the descriptor in the ->priv
179 * field. 175 * field.
180 */ 176 */
181 struct spi_mem_dirmap_desc { 177 struct spi_mem_dirmap_desc {
182 struct spi_mem *mem; 178 struct spi_mem *mem;
183 struct spi_mem_dirmap_info info; 179 struct spi_mem_dirmap_info info;
184 unsigned int nodirmap; 180 unsigned int nodirmap;
185 void *priv; 181 void *priv;
186 }; 182 };
187 183
188 /** 184 /**
189 * struct spi_mem - describes a SPI memory dev 185 * struct spi_mem - describes a SPI memory device
190 * @spi: the underlying SPI device 186 * @spi: the underlying SPI device
191 * @drvpriv: spi_mem_driver private data 187 * @drvpriv: spi_mem_driver private data
192 * @name: name of the SPI memory device 188 * @name: name of the SPI memory device
193 * 189 *
194 * Extra information that describe the SPI mem 190 * Extra information that describe the SPI memory device and may be needed by
195 * the controller to properly handle this devi 191 * the controller to properly handle this device should be placed here.
196 * 192 *
197 * One example would be the device size since 193 * One example would be the device size since some controller expose their SPI
198 * mem devices through a io-mapped region. 194 * mem devices through a io-mapped region.
199 */ 195 */
200 struct spi_mem { 196 struct spi_mem {
201 struct spi_device *spi; 197 struct spi_device *spi;
202 void *drvpriv; 198 void *drvpriv;
203 const char *name; 199 const char *name;
204 }; 200 };
205 201
206 /** 202 /**
207 * struct spi_mem_set_drvdata() - attach drive 203 * struct spi_mem_set_drvdata() - attach driver private data to a SPI mem
208 * device 204 * device
209 * @mem: memory device 205 * @mem: memory device
210 * @data: data to attach to the memory device 206 * @data: data to attach to the memory device
211 */ 207 */
212 static inline void spi_mem_set_drvdata(struct 208 static inline void spi_mem_set_drvdata(struct spi_mem *mem, void *data)
213 { 209 {
214 mem->drvpriv = data; 210 mem->drvpriv = data;
215 } 211 }
216 212
217 /** 213 /**
218 * struct spi_mem_get_drvdata() - get driver p 214 * struct spi_mem_get_drvdata() - get driver private data attached to a SPI mem
219 * device 215 * device
220 * @mem: memory device 216 * @mem: memory device
221 * 217 *
222 * Return: the data attached to the mem device 218 * Return: the data attached to the mem device.
223 */ 219 */
224 static inline void *spi_mem_get_drvdata(struct 220 static inline void *spi_mem_get_drvdata(struct spi_mem *mem)
225 { 221 {
226 return mem->drvpriv; 222 return mem->drvpriv;
227 } 223 }
228 224
229 /** 225 /**
230 * struct spi_controller_mem_ops - SPI memory 226 * struct spi_controller_mem_ops - SPI memory operations
231 * @adjust_op_size: shrink the data xfer of an 227 * @adjust_op_size: shrink the data xfer of an operation to match controller's
232 * limitations (can be alignm !! 228 * limitations (can be alignment of max RX/TX size
233 * limitations) 229 * limitations)
234 * @supports_op: check if an operation is supp 230 * @supports_op: check if an operation is supported by the controller
235 * @exec_op: execute a SPI memory operation 231 * @exec_op: execute a SPI memory operation
236 * not all driver provides supports_ <<
237 * if the op is not supported by the <<
238 * @get_name: get a custom name for the SPI me 232 * @get_name: get a custom name for the SPI mem device from the controller.
239 * This might be needed if the cont 233 * This might be needed if the controller driver has been ported
240 * to use the SPI mem layer and a c 234 * to use the SPI mem layer and a custom name is used to keep
241 * mtdparts compatible. 235 * mtdparts compatible.
242 * Note that if the implementation 236 * Note that if the implementation of this function allocates memory
243 * dynamically, then it should do s 237 * dynamically, then it should do so with devm_xxx(), as we don't
244 * have a ->free_name() function. 238 * have a ->free_name() function.
245 * @dirmap_create: create a direct mapping des 239 * @dirmap_create: create a direct mapping descriptor that can later be used to
246 * access the memory device. T 240 * access the memory device. This method is optional
247 * @dirmap_destroy: destroy a memory descripto 241 * @dirmap_destroy: destroy a memory descriptor previous created by
248 * ->dirmap_create() 242 * ->dirmap_create()
249 * @dirmap_read: read data from the memory dev 243 * @dirmap_read: read data from the memory device using the direct mapping
250 * created by ->dirmap_create(). 244 * created by ->dirmap_create(). The function can return less
251 * data than requested (for exam 245 * data than requested (for example when the request is crossing
252 * the currently mapped area), a 246 * the currently mapped area), and the caller of
253 * spi_mem_dirmap_read() is resp 247 * spi_mem_dirmap_read() is responsible for calling it again in
254 * this case. 248 * this case.
255 * @dirmap_write: write data to the memory dev 249 * @dirmap_write: write data to the memory device using the direct mapping
256 * created by ->dirmap_create() 250 * created by ->dirmap_create(). The function can return less
257 * data than requested (for exa 251 * data than requested (for example when the request is crossing
258 * the currently mapped area), 252 * the currently mapped area), and the caller of
259 * spi_mem_dirmap_write() is re 253 * spi_mem_dirmap_write() is responsible for calling it again in
260 * this case. 254 * this case.
261 * @poll_status: poll memory device status unt 255 * @poll_status: poll memory device status until (status & mask) == match or
262 * when the timeout has expired. 256 * when the timeout has expired. It fills the data buffer with
263 * the last status value. 257 * the last status value.
264 * 258 *
265 * This interface should be implemented by SPI 259 * This interface should be implemented by SPI controllers providing an
266 * high-level interface to execute SPI memory 260 * high-level interface to execute SPI memory operation, which is usually the
267 * case for QSPI controllers. 261 * case for QSPI controllers.
268 * 262 *
269 * Note on ->dirmap_{read,write}(): drivers sh 263 * Note on ->dirmap_{read,write}(): drivers should avoid accessing the direct
270 * mapping from the CPU because doing that can 264 * mapping from the CPU because doing that can stall the CPU waiting for the
271 * SPI mem transaction to finish, and this wil 265 * SPI mem transaction to finish, and this will make real-time maintainers
272 * unhappy and might make your system less rea 266 * unhappy and might make your system less reactive. Instead, drivers should
273 * use DMA to access this direct mapping. 267 * use DMA to access this direct mapping.
274 */ 268 */
275 struct spi_controller_mem_ops { 269 struct spi_controller_mem_ops {
276 int (*adjust_op_size)(struct spi_mem * 270 int (*adjust_op_size)(struct spi_mem *mem, struct spi_mem_op *op);
277 bool (*supports_op)(struct spi_mem *me 271 bool (*supports_op)(struct spi_mem *mem,
278 const struct spi_m 272 const struct spi_mem_op *op);
279 int (*exec_op)(struct spi_mem *mem, 273 int (*exec_op)(struct spi_mem *mem,
280 const struct spi_mem_op 274 const struct spi_mem_op *op);
281 const char *(*get_name)(struct spi_mem 275 const char *(*get_name)(struct spi_mem *mem);
282 int (*dirmap_create)(struct spi_mem_di 276 int (*dirmap_create)(struct spi_mem_dirmap_desc *desc);
283 void (*dirmap_destroy)(struct spi_mem_ 277 void (*dirmap_destroy)(struct spi_mem_dirmap_desc *desc);
284 ssize_t (*dirmap_read)(struct spi_mem_ 278 ssize_t (*dirmap_read)(struct spi_mem_dirmap_desc *desc,
285 u64 offs, size_ 279 u64 offs, size_t len, void *buf);
286 ssize_t (*dirmap_write)(struct spi_mem 280 ssize_t (*dirmap_write)(struct spi_mem_dirmap_desc *desc,
287 u64 offs, size 281 u64 offs, size_t len, const void *buf);
288 int (*poll_status)(struct spi_mem *mem 282 int (*poll_status)(struct spi_mem *mem,
289 const struct spi_me 283 const struct spi_mem_op *op,
290 u16 mask, u16 match 284 u16 mask, u16 match,
291 unsigned long initi 285 unsigned long initial_delay_us,
292 unsigned long polli 286 unsigned long polling_rate_us,
293 unsigned long timeo 287 unsigned long timeout_ms);
294 }; 288 };
295 289
296 /** 290 /**
297 * struct spi_controller_mem_caps - SPI memory 291 * struct spi_controller_mem_caps - SPI memory controller capabilities
298 * @dtr: Supports DTR operations 292 * @dtr: Supports DTR operations
299 * @ecc: Supports operations with error correc 293 * @ecc: Supports operations with error correction
300 */ 294 */
301 struct spi_controller_mem_caps { 295 struct spi_controller_mem_caps {
302 bool dtr; 296 bool dtr;
303 bool ecc; 297 bool ecc;
304 }; 298 };
305 299
306 #define spi_mem_controller_is_capable(ctlr, ca 300 #define spi_mem_controller_is_capable(ctlr, cap) \
307 ((ctlr)->mem_caps && (ctlr)->mem_caps- 301 ((ctlr)->mem_caps && (ctlr)->mem_caps->cap)
308 302
309 /** 303 /**
310 * struct spi_mem_driver - SPI memory driver 304 * struct spi_mem_driver - SPI memory driver
311 * @spidrv: inherit from a SPI driver 305 * @spidrv: inherit from a SPI driver
312 * @probe: probe a SPI memory. Usually where d 306 * @probe: probe a SPI memory. Usually where detection/initialization takes
313 * place 307 * place
314 * @remove: remove a SPI memory 308 * @remove: remove a SPI memory
315 * @shutdown: take appropriate action when the 309 * @shutdown: take appropriate action when the system is shutdown
316 * 310 *
317 * This is just a thin wrapper around a spi_dr 311 * This is just a thin wrapper around a spi_driver. The core takes care of
318 * allocating the spi_mem object and forwardin 312 * allocating the spi_mem object and forwarding the probe/remove/shutdown
319 * request to the spi_mem_driver. The reason w 313 * request to the spi_mem_driver. The reason we use this wrapper is because
320 * we might have to stuff more information int 314 * we might have to stuff more information into the spi_mem struct to let
321 * SPI controllers know more about the SPI mem 315 * SPI controllers know more about the SPI memory they interact with, and
322 * having this intermediate layer allows us to 316 * having this intermediate layer allows us to do that without adding more
323 * useless fields to the spi_device object. 317 * useless fields to the spi_device object.
324 */ 318 */
325 struct spi_mem_driver { 319 struct spi_mem_driver {
326 struct spi_driver spidrv; 320 struct spi_driver spidrv;
327 int (*probe)(struct spi_mem *mem); 321 int (*probe)(struct spi_mem *mem);
328 int (*remove)(struct spi_mem *mem); 322 int (*remove)(struct spi_mem *mem);
329 void (*shutdown)(struct spi_mem *mem); 323 void (*shutdown)(struct spi_mem *mem);
330 }; 324 };
331 325
332 #if IS_ENABLED(CONFIG_SPI_MEM) 326 #if IS_ENABLED(CONFIG_SPI_MEM)
333 int spi_controller_dma_map_mem_op_data(struct 327 int spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
334 const s 328 const struct spi_mem_op *op,
335 struct 329 struct sg_table *sg);
336 330
337 void spi_controller_dma_unmap_mem_op_data(stru 331 void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
338 cons 332 const struct spi_mem_op *op,
339 stru 333 struct sg_table *sg);
340 334
341 bool spi_mem_default_supports_op(struct spi_me 335 bool spi_mem_default_supports_op(struct spi_mem *mem,
342 const struct 336 const struct spi_mem_op *op);
343 #else 337 #else
344 static inline int 338 static inline int
345 spi_controller_dma_map_mem_op_data(struct spi_ 339 spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
346 const struc 340 const struct spi_mem_op *op,
347 struct sg_t 341 struct sg_table *sg)
348 { 342 {
349 return -ENOTSUPP; 343 return -ENOTSUPP;
350 } 344 }
351 345
352 static inline void 346 static inline void
353 spi_controller_dma_unmap_mem_op_data(struct sp 347 spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
354 const str 348 const struct spi_mem_op *op,
355 struct sg 349 struct sg_table *sg)
356 { 350 {
357 } 351 }
358 352
359 static inline 353 static inline
360 bool spi_mem_default_supports_op(struct spi_me 354 bool spi_mem_default_supports_op(struct spi_mem *mem,
361 const struct 355 const struct spi_mem_op *op)
362 { 356 {
363 return false; 357 return false;
364 } 358 }
365 #endif /* CONFIG_SPI_MEM */ 359 #endif /* CONFIG_SPI_MEM */
366 360
367 int spi_mem_adjust_op_size(struct spi_mem *mem 361 int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
368 362
369 bool spi_mem_supports_op(struct spi_mem *mem, 363 bool spi_mem_supports_op(struct spi_mem *mem,
370 const struct spi_mem_ 364 const struct spi_mem_op *op);
371 365
372 int spi_mem_exec_op(struct spi_mem *mem, 366 int spi_mem_exec_op(struct spi_mem *mem,
373 const struct spi_mem_op *o 367 const struct spi_mem_op *op);
374 368
375 const char *spi_mem_get_name(struct spi_mem *m 369 const char *spi_mem_get_name(struct spi_mem *mem);
376 370
377 struct spi_mem_dirmap_desc * 371 struct spi_mem_dirmap_desc *
378 spi_mem_dirmap_create(struct spi_mem *mem, 372 spi_mem_dirmap_create(struct spi_mem *mem,
379 const struct spi_mem_dir 373 const struct spi_mem_dirmap_info *info);
380 void spi_mem_dirmap_destroy(struct spi_mem_dir 374 void spi_mem_dirmap_destroy(struct spi_mem_dirmap_desc *desc);
381 ssize_t spi_mem_dirmap_read(struct spi_mem_dir 375 ssize_t spi_mem_dirmap_read(struct spi_mem_dirmap_desc *desc,
382 u64 offs, size_t l 376 u64 offs, size_t len, void *buf);
383 ssize_t spi_mem_dirmap_write(struct spi_mem_di 377 ssize_t spi_mem_dirmap_write(struct spi_mem_dirmap_desc *desc,
384 u64 offs, size_t 378 u64 offs, size_t len, const void *buf);
385 struct spi_mem_dirmap_desc * 379 struct spi_mem_dirmap_desc *
386 devm_spi_mem_dirmap_create(struct device *dev, 380 devm_spi_mem_dirmap_create(struct device *dev, struct spi_mem *mem,
387 const struct spi_me 381 const struct spi_mem_dirmap_info *info);
388 void devm_spi_mem_dirmap_destroy(struct device 382 void devm_spi_mem_dirmap_destroy(struct device *dev,
389 struct spi_me 383 struct spi_mem_dirmap_desc *desc);
390 384
391 int spi_mem_poll_status(struct spi_mem *mem, 385 int spi_mem_poll_status(struct spi_mem *mem,
392 const struct spi_mem_o 386 const struct spi_mem_op *op,
393 u16 mask, u16 match, 387 u16 mask, u16 match,
394 unsigned long initial_ 388 unsigned long initial_delay_us,
395 unsigned long polling_ 389 unsigned long polling_delay_us,
396 u16 timeout_ms); 390 u16 timeout_ms);
397 391
398 int spi_mem_driver_register_with_owner(struct 392 int spi_mem_driver_register_with_owner(struct spi_mem_driver *drv,
399 struct 393 struct module *owner);
400 394
401 void spi_mem_driver_unregister(struct spi_mem_ 395 void spi_mem_driver_unregister(struct spi_mem_driver *drv);
402 396
403 #define spi_mem_driver_register(__drv) 397 #define spi_mem_driver_register(__drv) \
404 spi_mem_driver_register_with_owner(__d 398 spi_mem_driver_register_with_owner(__drv, THIS_MODULE)
405 399
406 #define module_spi_mem_driver(__drv) 400 #define module_spi_mem_driver(__drv) \
407 module_driver(__drv, spi_mem_driver_re 401 module_driver(__drv, spi_mem_driver_register, \
408 spi_mem_driver_unregiste 402 spi_mem_driver_unregister)
409 403
410 #endif /* __LINUX_SPI_MEM_H */ 404 #endif /* __LINUX_SPI_MEM_H */
411 405
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