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; 104 u8 __pad : 7;
105 u16 opcode; 105 u16 opcode;
106 } cmd; 106 } cmd;
107 107
108 struct { 108 struct {
109 u8 nbytes; 109 u8 nbytes;
110 u8 buswidth; 110 u8 buswidth;
111 u8 dtr : 1; 111 u8 dtr : 1;
112 u8 __pad : 7; 112 u8 __pad : 7;
113 u64 val; 113 u64 val;
114 } addr; 114 } addr;
115 115
116 struct { 116 struct {
117 u8 nbytes; 117 u8 nbytes;
118 u8 buswidth; 118 u8 buswidth;
119 u8 dtr : 1; 119 u8 dtr : 1;
120 u8 __pad : 7; 120 u8 __pad : 7;
121 } dummy; 121 } dummy;
122 122
123 struct { 123 struct {
124 u8 buswidth; 124 u8 buswidth;
125 u8 dtr : 1; 125 u8 dtr : 1;
126 u8 ecc : 1; 126 u8 ecc : 1;
127 u8 __pad : 6; 127 u8 __pad : 6;
128 enum spi_mem_data_dir dir; 128 enum spi_mem_data_dir dir;
129 unsigned int nbytes; 129 unsigned int nbytes;
130 union { 130 union {
131 void *in; 131 void *in;
132 const void *out; 132 const void *out;
133 } buf; 133 } buf;
134 } data; 134 } data;
135 }; 135 };
136 136
137 #define SPI_MEM_OP(__cmd, __addr, __dummy, __d 137 #define SPI_MEM_OP(__cmd, __addr, __dummy, __data) \
138 { 138 { \
139 .cmd = __cmd, 139 .cmd = __cmd, \
140 .addr = __addr, 140 .addr = __addr, \
141 .dummy = __dummy, 141 .dummy = __dummy, \
142 .data = __data, 142 .data = __data, \
143 } 143 }
144 144
145 /** 145 /**
146 * struct spi_mem_dirmap_info - Direct mapping 146 * struct spi_mem_dirmap_info - Direct mapping information
147 * @op_tmpl: operation template that should be 147 * @op_tmpl: operation template that should be used by the direct mapping when
148 * the memory device is accessed 148 * the memory device is accessed
149 * @offset: absolute offset this direct mappin 149 * @offset: absolute offset this direct mapping is pointing to
150 * @length: length in byte of this direct mapp 150 * @length: length in byte of this direct mapping
151 * 151 *
152 * These information are used by the controlle 152 * These information are used by the controller specific implementation to know
153 * the portion of memory that is directly mapp 153 * the portion of memory that is directly mapped and the spi_mem_op that should
154 * be used to access the device. 154 * be used to access the device.
155 * A direct mapping is only valid for one dire 155 * A direct mapping is only valid for one direction (read or write) and this
156 * direction is directly encoded in the ->op_t 156 * direction is directly encoded in the ->op_tmpl.data.dir field.
157 */ 157 */
158 struct spi_mem_dirmap_info { 158 struct spi_mem_dirmap_info {
159 struct spi_mem_op op_tmpl; 159 struct spi_mem_op op_tmpl;
160 u64 offset; 160 u64 offset;
161 u64 length; 161 u64 length;
162 }; 162 };
163 163
164 /** 164 /**
165 * struct spi_mem_dirmap_desc - Direct mapping 165 * struct spi_mem_dirmap_desc - Direct mapping descriptor
166 * @mem: the SPI memory device this direct map 166 * @mem: the SPI memory device this direct mapping is attached to
167 * @info: information passed at direct mapping 167 * @info: information passed at direct mapping creation time
168 * @nodirmap: set to 1 if the SPI controller d 168 * @nodirmap: set to 1 if the SPI controller does not implement
169 * ->mem_ops->dirmap_create() or wh 169 * ->mem_ops->dirmap_create() or when this function returned an
170 * error. If @nodirmap is true, all 170 * error. If @nodirmap is true, all spi_mem_dirmap_{read,write}()
171 * calls will use spi_mem_exec_op() 171 * calls will use spi_mem_exec_op() to access the memory. This is a
172 * degraded mode that allows spi_me 172 * degraded mode that allows spi_mem drivers to use the same code
173 * no matter whether the controller 173 * no matter whether the controller supports direct mapping or not
174 * @priv: field pointing to controller specifi 174 * @priv: field pointing to controller specific data
175 * 175 *
176 * Common part of a direct mapping descriptor. 176 * Common part of a direct mapping descriptor. This object is created by
177 * spi_mem_dirmap_create() and controller impl 177 * spi_mem_dirmap_create() and controller implementation of ->create_dirmap()
178 * can create/attach direct mapping resources 178 * can create/attach direct mapping resources to the descriptor in the ->priv
179 * field. 179 * field.
180 */ 180 */
181 struct spi_mem_dirmap_desc { 181 struct spi_mem_dirmap_desc {
182 struct spi_mem *mem; 182 struct spi_mem *mem;
183 struct spi_mem_dirmap_info info; 183 struct spi_mem_dirmap_info info;
184 unsigned int nodirmap; 184 unsigned int nodirmap;
185 void *priv; 185 void *priv;
186 }; 186 };
187 187
188 /** 188 /**
189 * struct spi_mem - describes a SPI memory dev 189 * struct spi_mem - describes a SPI memory device
190 * @spi: the underlying SPI device 190 * @spi: the underlying SPI device
191 * @drvpriv: spi_mem_driver private data 191 * @drvpriv: spi_mem_driver private data
192 * @name: name of the SPI memory device 192 * @name: name of the SPI memory device
193 * 193 *
194 * Extra information that describe the SPI mem 194 * Extra information that describe the SPI memory device and may be needed by
195 * the controller to properly handle this devi 195 * the controller to properly handle this device should be placed here.
196 * 196 *
197 * One example would be the device size since 197 * One example would be the device size since some controller expose their SPI
198 * mem devices through a io-mapped region. 198 * mem devices through a io-mapped region.
199 */ 199 */
200 struct spi_mem { 200 struct spi_mem {
201 struct spi_device *spi; 201 struct spi_device *spi;
202 void *drvpriv; 202 void *drvpriv;
203 const char *name; 203 const char *name;
204 }; 204 };
205 205
206 /** 206 /**
207 * struct spi_mem_set_drvdata() - attach drive 207 * struct spi_mem_set_drvdata() - attach driver private data to a SPI mem
208 * device 208 * device
209 * @mem: memory device 209 * @mem: memory device
210 * @data: data to attach to the memory device 210 * @data: data to attach to the memory device
211 */ 211 */
212 static inline void spi_mem_set_drvdata(struct 212 static inline void spi_mem_set_drvdata(struct spi_mem *mem, void *data)
213 { 213 {
214 mem->drvpriv = data; 214 mem->drvpriv = data;
215 } 215 }
216 216
217 /** 217 /**
218 * struct spi_mem_get_drvdata() - get driver p 218 * struct spi_mem_get_drvdata() - get driver private data attached to a SPI mem
219 * device 219 * device
220 * @mem: memory device 220 * @mem: memory device
221 * 221 *
222 * Return: the data attached to the mem device 222 * Return: the data attached to the mem device.
223 */ 223 */
224 static inline void *spi_mem_get_drvdata(struct 224 static inline void *spi_mem_get_drvdata(struct spi_mem *mem)
225 { 225 {
226 return mem->drvpriv; 226 return mem->drvpriv;
227 } 227 }
228 228
229 /** 229 /**
230 * struct spi_controller_mem_ops - SPI memory 230 * struct spi_controller_mem_ops - SPI memory operations
231 * @adjust_op_size: shrink the data xfer of an 231 * @adjust_op_size: shrink the data xfer of an operation to match controller's
232 * limitations (can be alignm 232 * limitations (can be alignment or max RX/TX size
233 * limitations) 233 * limitations)
234 * @supports_op: check if an operation is supp 234 * @supports_op: check if an operation is supported by the controller
235 * @exec_op: execute a SPI memory operation 235 * @exec_op: execute a SPI memory operation
236 * not all driver provides supports_ 236 * not all driver provides supports_op(), so it can return -EOPNOTSUPP
237 * if the op is not supported by the 237 * if the op is not supported by the driver/controller
238 * @get_name: get a custom name for the SPI me 238 * @get_name: get a custom name for the SPI mem device from the controller.
239 * This might be needed if the cont 239 * This might be needed if the controller driver has been ported
240 * to use the SPI mem layer and a c 240 * to use the SPI mem layer and a custom name is used to keep
241 * mtdparts compatible. 241 * mtdparts compatible.
242 * Note that if the implementation 242 * Note that if the implementation of this function allocates memory
243 * dynamically, then it should do s 243 * dynamically, then it should do so with devm_xxx(), as we don't
244 * have a ->free_name() function. 244 * have a ->free_name() function.
245 * @dirmap_create: create a direct mapping des 245 * @dirmap_create: create a direct mapping descriptor that can later be used to
246 * access the memory device. T 246 * access the memory device. This method is optional
247 * @dirmap_destroy: destroy a memory descripto 247 * @dirmap_destroy: destroy a memory descriptor previous created by
248 * ->dirmap_create() 248 * ->dirmap_create()
249 * @dirmap_read: read data from the memory dev 249 * @dirmap_read: read data from the memory device using the direct mapping
250 * created by ->dirmap_create(). 250 * created by ->dirmap_create(). The function can return less
251 * data than requested (for exam 251 * data than requested (for example when the request is crossing
252 * the currently mapped area), a 252 * the currently mapped area), and the caller of
253 * spi_mem_dirmap_read() is resp 253 * spi_mem_dirmap_read() is responsible for calling it again in
254 * this case. 254 * this case.
255 * @dirmap_write: write data to the memory dev 255 * @dirmap_write: write data to the memory device using the direct mapping
256 * created by ->dirmap_create() 256 * created by ->dirmap_create(). The function can return less
257 * data than requested (for exa 257 * data than requested (for example when the request is crossing
258 * the currently mapped area), 258 * the currently mapped area), and the caller of
259 * spi_mem_dirmap_write() is re 259 * spi_mem_dirmap_write() is responsible for calling it again in
260 * this case. 260 * this case.
261 * @poll_status: poll memory device status unt 261 * @poll_status: poll memory device status until (status & mask) == match or
262 * when the timeout has expired. 262 * when the timeout has expired. It fills the data buffer with
263 * the last status value. 263 * the last status value.
264 * 264 *
265 * This interface should be implemented by SPI 265 * This interface should be implemented by SPI controllers providing an
266 * high-level interface to execute SPI memory 266 * high-level interface to execute SPI memory operation, which is usually the
267 * case for QSPI controllers. 267 * case for QSPI controllers.
268 * 268 *
269 * Note on ->dirmap_{read,write}(): drivers sh 269 * Note on ->dirmap_{read,write}(): drivers should avoid accessing the direct
270 * mapping from the CPU because doing that can 270 * mapping from the CPU because doing that can stall the CPU waiting for the
271 * SPI mem transaction to finish, and this wil 271 * SPI mem transaction to finish, and this will make real-time maintainers
272 * unhappy and might make your system less rea 272 * unhappy and might make your system less reactive. Instead, drivers should
273 * use DMA to access this direct mapping. 273 * use DMA to access this direct mapping.
274 */ 274 */
275 struct spi_controller_mem_ops { 275 struct spi_controller_mem_ops {
276 int (*adjust_op_size)(struct spi_mem * 276 int (*adjust_op_size)(struct spi_mem *mem, struct spi_mem_op *op);
277 bool (*supports_op)(struct spi_mem *me 277 bool (*supports_op)(struct spi_mem *mem,
278 const struct spi_m 278 const struct spi_mem_op *op);
279 int (*exec_op)(struct spi_mem *mem, 279 int (*exec_op)(struct spi_mem *mem,
280 const struct spi_mem_op 280 const struct spi_mem_op *op);
281 const char *(*get_name)(struct spi_mem 281 const char *(*get_name)(struct spi_mem *mem);
282 int (*dirmap_create)(struct spi_mem_di 282 int (*dirmap_create)(struct spi_mem_dirmap_desc *desc);
283 void (*dirmap_destroy)(struct spi_mem_ 283 void (*dirmap_destroy)(struct spi_mem_dirmap_desc *desc);
284 ssize_t (*dirmap_read)(struct spi_mem_ 284 ssize_t (*dirmap_read)(struct spi_mem_dirmap_desc *desc,
285 u64 offs, size_ 285 u64 offs, size_t len, void *buf);
286 ssize_t (*dirmap_write)(struct spi_mem 286 ssize_t (*dirmap_write)(struct spi_mem_dirmap_desc *desc,
287 u64 offs, size 287 u64 offs, size_t len, const void *buf);
288 int (*poll_status)(struct spi_mem *mem 288 int (*poll_status)(struct spi_mem *mem,
289 const struct spi_me 289 const struct spi_mem_op *op,
290 u16 mask, u16 match 290 u16 mask, u16 match,
291 unsigned long initi 291 unsigned long initial_delay_us,
292 unsigned long polli 292 unsigned long polling_rate_us,
293 unsigned long timeo 293 unsigned long timeout_ms);
294 }; 294 };
295 295
296 /** 296 /**
297 * struct spi_controller_mem_caps - SPI memory 297 * struct spi_controller_mem_caps - SPI memory controller capabilities
298 * @dtr: Supports DTR operations 298 * @dtr: Supports DTR operations
299 * @ecc: Supports operations with error correc 299 * @ecc: Supports operations with error correction
300 */ 300 */
301 struct spi_controller_mem_caps { 301 struct spi_controller_mem_caps {
302 bool dtr; 302 bool dtr;
303 bool ecc; 303 bool ecc;
304 }; 304 };
305 305
306 #define spi_mem_controller_is_capable(ctlr, ca 306 #define spi_mem_controller_is_capable(ctlr, cap) \
307 ((ctlr)->mem_caps && (ctlr)->mem_caps- 307 ((ctlr)->mem_caps && (ctlr)->mem_caps->cap)
308 308
309 /** 309 /**
310 * struct spi_mem_driver - SPI memory driver 310 * struct spi_mem_driver - SPI memory driver
311 * @spidrv: inherit from a SPI driver 311 * @spidrv: inherit from a SPI driver
312 * @probe: probe a SPI memory. Usually where d 312 * @probe: probe a SPI memory. Usually where detection/initialization takes
313 * place 313 * place
314 * @remove: remove a SPI memory 314 * @remove: remove a SPI memory
315 * @shutdown: take appropriate action when the 315 * @shutdown: take appropriate action when the system is shutdown
316 * 316 *
317 * This is just a thin wrapper around a spi_dr 317 * This is just a thin wrapper around a spi_driver. The core takes care of
318 * allocating the spi_mem object and forwardin 318 * allocating the spi_mem object and forwarding the probe/remove/shutdown
319 * request to the spi_mem_driver. The reason w 319 * request to the spi_mem_driver. The reason we use this wrapper is because
320 * we might have to stuff more information int 320 * we might have to stuff more information into the spi_mem struct to let
321 * SPI controllers know more about the SPI mem 321 * SPI controllers know more about the SPI memory they interact with, and
322 * having this intermediate layer allows us to 322 * having this intermediate layer allows us to do that without adding more
323 * useless fields to the spi_device object. 323 * useless fields to the spi_device object.
324 */ 324 */
325 struct spi_mem_driver { 325 struct spi_mem_driver {
326 struct spi_driver spidrv; 326 struct spi_driver spidrv;
327 int (*probe)(struct spi_mem *mem); 327 int (*probe)(struct spi_mem *mem);
328 int (*remove)(struct spi_mem *mem); 328 int (*remove)(struct spi_mem *mem);
329 void (*shutdown)(struct spi_mem *mem); 329 void (*shutdown)(struct spi_mem *mem);
330 }; 330 };
331 331
332 #if IS_ENABLED(CONFIG_SPI_MEM) 332 #if IS_ENABLED(CONFIG_SPI_MEM)
333 int spi_controller_dma_map_mem_op_data(struct 333 int spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
334 const s 334 const struct spi_mem_op *op,
335 struct 335 struct sg_table *sg);
336 336
337 void spi_controller_dma_unmap_mem_op_data(stru 337 void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
338 cons 338 const struct spi_mem_op *op,
339 stru 339 struct sg_table *sg);
340 340
341 bool spi_mem_default_supports_op(struct spi_me 341 bool spi_mem_default_supports_op(struct spi_mem *mem,
342 const struct 342 const struct spi_mem_op *op);
343 #else 343 #else
344 static inline int 344 static inline int
345 spi_controller_dma_map_mem_op_data(struct spi_ 345 spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
346 const struc 346 const struct spi_mem_op *op,
347 struct sg_t 347 struct sg_table *sg)
348 { 348 {
349 return -ENOTSUPP; 349 return -ENOTSUPP;
350 } 350 }
351 351
352 static inline void 352 static inline void
353 spi_controller_dma_unmap_mem_op_data(struct sp 353 spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
354 const str 354 const struct spi_mem_op *op,
355 struct sg 355 struct sg_table *sg)
356 { 356 {
357 } 357 }
358 358
359 static inline 359 static inline
360 bool spi_mem_default_supports_op(struct spi_me 360 bool spi_mem_default_supports_op(struct spi_mem *mem,
361 const struct 361 const struct spi_mem_op *op)
362 { 362 {
363 return false; 363 return false;
364 } 364 }
365 #endif /* CONFIG_SPI_MEM */ 365 #endif /* CONFIG_SPI_MEM */
366 366
367 int spi_mem_adjust_op_size(struct spi_mem *mem 367 int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
368 368
369 bool spi_mem_supports_op(struct spi_mem *mem, 369 bool spi_mem_supports_op(struct spi_mem *mem,
370 const struct spi_mem_ 370 const struct spi_mem_op *op);
371 371
372 int spi_mem_exec_op(struct spi_mem *mem, 372 int spi_mem_exec_op(struct spi_mem *mem,
373 const struct spi_mem_op *o 373 const struct spi_mem_op *op);
374 374
375 const char *spi_mem_get_name(struct spi_mem *m 375 const char *spi_mem_get_name(struct spi_mem *mem);
376 376
377 struct spi_mem_dirmap_desc * 377 struct spi_mem_dirmap_desc *
378 spi_mem_dirmap_create(struct spi_mem *mem, 378 spi_mem_dirmap_create(struct spi_mem *mem,
379 const struct spi_mem_dir 379 const struct spi_mem_dirmap_info *info);
380 void spi_mem_dirmap_destroy(struct spi_mem_dir 380 void spi_mem_dirmap_destroy(struct spi_mem_dirmap_desc *desc);
381 ssize_t spi_mem_dirmap_read(struct spi_mem_dir 381 ssize_t spi_mem_dirmap_read(struct spi_mem_dirmap_desc *desc,
382 u64 offs, size_t l 382 u64 offs, size_t len, void *buf);
383 ssize_t spi_mem_dirmap_write(struct spi_mem_di 383 ssize_t spi_mem_dirmap_write(struct spi_mem_dirmap_desc *desc,
384 u64 offs, size_t 384 u64 offs, size_t len, const void *buf);
385 struct spi_mem_dirmap_desc * 385 struct spi_mem_dirmap_desc *
386 devm_spi_mem_dirmap_create(struct device *dev, 386 devm_spi_mem_dirmap_create(struct device *dev, struct spi_mem *mem,
387 const struct spi_me 387 const struct spi_mem_dirmap_info *info);
388 void devm_spi_mem_dirmap_destroy(struct device 388 void devm_spi_mem_dirmap_destroy(struct device *dev,
389 struct spi_me 389 struct spi_mem_dirmap_desc *desc);
390 390
391 int spi_mem_poll_status(struct spi_mem *mem, 391 int spi_mem_poll_status(struct spi_mem *mem,
392 const struct spi_mem_o 392 const struct spi_mem_op *op,
393 u16 mask, u16 match, 393 u16 mask, u16 match,
394 unsigned long initial_ 394 unsigned long initial_delay_us,
395 unsigned long polling_ 395 unsigned long polling_delay_us,
396 u16 timeout_ms); 396 u16 timeout_ms);
397 397
398 int spi_mem_driver_register_with_owner(struct 398 int spi_mem_driver_register_with_owner(struct spi_mem_driver *drv,
399 struct 399 struct module *owner);
400 400
401 void spi_mem_driver_unregister(struct spi_mem_ 401 void spi_mem_driver_unregister(struct spi_mem_driver *drv);
402 402
403 #define spi_mem_driver_register(__drv) 403 #define spi_mem_driver_register(__drv) \
404 spi_mem_driver_register_with_owner(__d 404 spi_mem_driver_register_with_owner(__drv, THIS_MODULE)
405 405
406 #define module_spi_mem_driver(__drv) 406 #define module_spi_mem_driver(__drv) \
407 module_driver(__drv, spi_mem_driver_re 407 module_driver(__drv, spi_mem_driver_register, \
408 spi_mem_driver_unregiste 408 spi_mem_driver_unregister)
409 409
410 #endif /* __LINUX_SPI_MEM_H */ 410 #endif /* __LINUX_SPI_MEM_H */
411 411
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