Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * sst25l.c |
| 3 | * |
| 4 | * Driver for SST25L SPI Flash chips |
| 5 | * |
| 6 | * Copyright © 2009 Bluewater Systems Ltd |
| 7 | * Author: Andre Renaud <andre@bluewatersys.com> |
| 8 | * Author: Ryan Mallon <ryan@bluewatersys.com> |
| 9 | * |
| 10 | * Based on m25p80.c |
| 11 | * |
| 12 | * This code is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License version 2 as |
| 14 | * published by the Free Software Foundation. |
| 15 | * |
| 16 | */ |
| 17 | |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/mutex.h> |
| 22 | #include <linux/interrupt.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 23 | #include <linux/slab.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 24 | #include <linux/sched.h> |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 25 | |
| 26 | #include <linux/mtd/mtd.h> |
| 27 | #include <linux/mtd/partitions.h> |
| 28 | |
| 29 | #include <linux/spi/spi.h> |
| 30 | #include <linux/spi/flash.h> |
| 31 | |
| 32 | /* Erases can take up to 3 seconds! */ |
| 33 | #define MAX_READY_WAIT_JIFFIES msecs_to_jiffies(3000) |
| 34 | |
| 35 | #define SST25L_CMD_WRSR 0x01 /* Write status register */ |
| 36 | #define SST25L_CMD_WRDI 0x04 /* Write disable */ |
| 37 | #define SST25L_CMD_RDSR 0x05 /* Read status register */ |
| 38 | #define SST25L_CMD_WREN 0x06 /* Write enable */ |
| 39 | #define SST25L_CMD_READ 0x03 /* High speed read */ |
| 40 | |
| 41 | #define SST25L_CMD_EWSR 0x50 /* Enable write status register */ |
| 42 | #define SST25L_CMD_SECTOR_ERASE 0x20 /* Erase sector */ |
| 43 | #define SST25L_CMD_READ_ID 0x90 /* Read device ID */ |
| 44 | #define SST25L_CMD_AAI_PROGRAM 0xaf /* Auto address increment */ |
| 45 | |
| 46 | #define SST25L_STATUS_BUSY (1 << 0) /* Chip is busy */ |
| 47 | #define SST25L_STATUS_WREN (1 << 1) /* Write enabled */ |
| 48 | #define SST25L_STATUS_BP0 (1 << 2) /* Block protection 0 */ |
| 49 | #define SST25L_STATUS_BP1 (1 << 3) /* Block protection 1 */ |
| 50 | |
| 51 | struct sst25l_flash { |
| 52 | struct spi_device *spi; |
| 53 | struct mutex lock; |
| 54 | struct mtd_info mtd; |
| 55 | |
| 56 | int partitioned; |
| 57 | }; |
| 58 | |
| 59 | struct flash_info { |
| 60 | const char *name; |
| 61 | uint16_t device_id; |
| 62 | unsigned page_size; |
| 63 | unsigned nr_pages; |
| 64 | unsigned erase_size; |
| 65 | }; |
| 66 | |
| 67 | #define to_sst25l_flash(x) container_of(x, struct sst25l_flash, mtd) |
| 68 | |
Mike Frysinger | 61cc827 | 2011-05-09 10:07:58 -0400 | [diff] [blame] | 69 | static struct flash_info __devinitdata sst25l_flash_info[] = { |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 70 | {"sst25lf020a", 0xbf43, 256, 1024, 4096}, |
| 71 | {"sst25lf040a", 0xbf44, 256, 2048, 4096}, |
| 72 | }; |
| 73 | |
| 74 | static int sst25l_status(struct sst25l_flash *flash, int *status) |
| 75 | { |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 76 | struct spi_message m; |
| 77 | struct spi_transfer t; |
| 78 | unsigned char cmd_resp[2]; |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 79 | int err; |
| 80 | |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 81 | spi_message_init(&m); |
| 82 | memset(&t, 0, sizeof(struct spi_transfer)); |
| 83 | |
| 84 | cmd_resp[0] = SST25L_CMD_RDSR; |
| 85 | cmd_resp[1] = 0xff; |
| 86 | t.tx_buf = cmd_resp; |
| 87 | t.rx_buf = cmd_resp; |
| 88 | t.len = sizeof(cmd_resp); |
| 89 | spi_message_add_tail(&t, &m); |
| 90 | err = spi_sync(flash->spi, &m); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 91 | if (err < 0) |
| 92 | return err; |
| 93 | |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 94 | *status = cmd_resp[1]; |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | static int sst25l_write_enable(struct sst25l_flash *flash, int enable) |
| 99 | { |
| 100 | unsigned char command[2]; |
| 101 | int status, err; |
| 102 | |
| 103 | command[0] = enable ? SST25L_CMD_WREN : SST25L_CMD_WRDI; |
| 104 | err = spi_write(flash->spi, command, 1); |
| 105 | if (err) |
| 106 | return err; |
| 107 | |
| 108 | command[0] = SST25L_CMD_EWSR; |
| 109 | err = spi_write(flash->spi, command, 1); |
| 110 | if (err) |
| 111 | return err; |
| 112 | |
| 113 | command[0] = SST25L_CMD_WRSR; |
| 114 | command[1] = enable ? 0 : SST25L_STATUS_BP0 | SST25L_STATUS_BP1; |
| 115 | err = spi_write(flash->spi, command, 2); |
| 116 | if (err) |
| 117 | return err; |
| 118 | |
| 119 | if (enable) { |
| 120 | err = sst25l_status(flash, &status); |
| 121 | if (err) |
| 122 | return err; |
| 123 | if (!(status & SST25L_STATUS_WREN)) |
| 124 | return -EROFS; |
| 125 | } |
| 126 | |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | static int sst25l_wait_till_ready(struct sst25l_flash *flash) |
| 131 | { |
| 132 | unsigned long deadline; |
| 133 | int status, err; |
| 134 | |
| 135 | deadline = jiffies + MAX_READY_WAIT_JIFFIES; |
| 136 | do { |
| 137 | err = sst25l_status(flash, &status); |
| 138 | if (err) |
| 139 | return err; |
| 140 | if (!(status & SST25L_STATUS_BUSY)) |
| 141 | return 0; |
| 142 | |
| 143 | cond_resched(); |
| 144 | } while (!time_after_eq(jiffies, deadline)); |
| 145 | |
| 146 | return -ETIMEDOUT; |
| 147 | } |
| 148 | |
| 149 | static int sst25l_erase_sector(struct sst25l_flash *flash, uint32_t offset) |
| 150 | { |
| 151 | unsigned char command[4]; |
| 152 | int err; |
| 153 | |
| 154 | err = sst25l_write_enable(flash, 1); |
| 155 | if (err) |
| 156 | return err; |
| 157 | |
| 158 | command[0] = SST25L_CMD_SECTOR_ERASE; |
| 159 | command[1] = offset >> 16; |
| 160 | command[2] = offset >> 8; |
| 161 | command[3] = offset; |
| 162 | err = spi_write(flash->spi, command, 4); |
| 163 | if (err) |
| 164 | return err; |
| 165 | |
| 166 | err = sst25l_wait_till_ready(flash); |
| 167 | if (err) |
| 168 | return err; |
| 169 | |
| 170 | return sst25l_write_enable(flash, 0); |
| 171 | } |
| 172 | |
| 173 | static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr) |
| 174 | { |
| 175 | struct sst25l_flash *flash = to_sst25l_flash(mtd); |
| 176 | uint32_t addr, end; |
| 177 | int err; |
| 178 | |
| 179 | /* Sanity checks */ |
| 180 | if (instr->addr + instr->len > flash->mtd.size) |
| 181 | return -EINVAL; |
| 182 | |
| 183 | if ((uint32_t)instr->len % mtd->erasesize) |
| 184 | return -EINVAL; |
| 185 | |
| 186 | if ((uint32_t)instr->addr % mtd->erasesize) |
| 187 | return -EINVAL; |
| 188 | |
| 189 | addr = instr->addr; |
| 190 | end = addr + instr->len; |
| 191 | |
| 192 | mutex_lock(&flash->lock); |
| 193 | |
| 194 | err = sst25l_wait_till_ready(flash); |
Jiri Slaby | 2eaaa5f | 2009-09-18 12:51:42 -0700 | [diff] [blame] | 195 | if (err) { |
| 196 | mutex_unlock(&flash->lock); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 197 | return err; |
Jiri Slaby | 2eaaa5f | 2009-09-18 12:51:42 -0700 | [diff] [blame] | 198 | } |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 199 | |
| 200 | while (addr < end) { |
| 201 | err = sst25l_erase_sector(flash, addr); |
| 202 | if (err) { |
| 203 | mutex_unlock(&flash->lock); |
| 204 | instr->state = MTD_ERASE_FAILED; |
| 205 | dev_err(&flash->spi->dev, "Erase failed\n"); |
| 206 | return err; |
| 207 | } |
| 208 | |
| 209 | addr += mtd->erasesize; |
| 210 | } |
| 211 | |
| 212 | mutex_unlock(&flash->lock); |
| 213 | |
| 214 | instr->state = MTD_ERASE_DONE; |
| 215 | mtd_erase_callback(instr); |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | static int sst25l_read(struct mtd_info *mtd, loff_t from, size_t len, |
| 220 | size_t *retlen, unsigned char *buf) |
| 221 | { |
| 222 | struct sst25l_flash *flash = to_sst25l_flash(mtd); |
| 223 | struct spi_transfer transfer[2]; |
| 224 | struct spi_message message; |
| 225 | unsigned char command[4]; |
| 226 | int ret; |
| 227 | |
| 228 | /* Sanity checking */ |
| 229 | if (len == 0) |
| 230 | return 0; |
| 231 | |
| 232 | if (from + len > flash->mtd.size) |
| 233 | return -EINVAL; |
| 234 | |
| 235 | if (retlen) |
| 236 | *retlen = 0; |
| 237 | |
| 238 | spi_message_init(&message); |
| 239 | memset(&transfer, 0, sizeof(transfer)); |
| 240 | |
| 241 | command[0] = SST25L_CMD_READ; |
| 242 | command[1] = from >> 16; |
| 243 | command[2] = from >> 8; |
| 244 | command[3] = from; |
| 245 | |
| 246 | transfer[0].tx_buf = command; |
| 247 | transfer[0].len = sizeof(command); |
| 248 | spi_message_add_tail(&transfer[0], &message); |
| 249 | |
| 250 | transfer[1].rx_buf = buf; |
| 251 | transfer[1].len = len; |
| 252 | spi_message_add_tail(&transfer[1], &message); |
| 253 | |
| 254 | mutex_lock(&flash->lock); |
| 255 | |
| 256 | /* Wait for previous write/erase to complete */ |
| 257 | ret = sst25l_wait_till_ready(flash); |
| 258 | if (ret) { |
| 259 | mutex_unlock(&flash->lock); |
| 260 | return ret; |
| 261 | } |
| 262 | |
| 263 | spi_sync(flash->spi, &message); |
| 264 | |
| 265 | if (retlen && message.actual_length > sizeof(command)) |
| 266 | *retlen += message.actual_length - sizeof(command); |
| 267 | |
| 268 | mutex_unlock(&flash->lock); |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | static int sst25l_write(struct mtd_info *mtd, loff_t to, size_t len, |
| 273 | size_t *retlen, const unsigned char *buf) |
| 274 | { |
| 275 | struct sst25l_flash *flash = to_sst25l_flash(mtd); |
| 276 | int i, j, ret, bytes, copied = 0; |
| 277 | unsigned char command[5]; |
| 278 | |
| 279 | /* Sanity checks */ |
| 280 | if (!len) |
| 281 | return 0; |
| 282 | |
| 283 | if (to + len > flash->mtd.size) |
| 284 | return -EINVAL; |
| 285 | |
| 286 | if ((uint32_t)to % mtd->writesize) |
| 287 | return -EINVAL; |
| 288 | |
| 289 | mutex_lock(&flash->lock); |
| 290 | |
| 291 | ret = sst25l_write_enable(flash, 1); |
| 292 | if (ret) |
| 293 | goto out; |
| 294 | |
| 295 | for (i = 0; i < len; i += mtd->writesize) { |
| 296 | ret = sst25l_wait_till_ready(flash); |
| 297 | if (ret) |
| 298 | goto out; |
| 299 | |
| 300 | /* Write the first byte of the page */ |
| 301 | command[0] = SST25L_CMD_AAI_PROGRAM; |
| 302 | command[1] = (to + i) >> 16; |
| 303 | command[2] = (to + i) >> 8; |
| 304 | command[3] = (to + i); |
| 305 | command[4] = buf[i]; |
| 306 | ret = spi_write(flash->spi, command, 5); |
| 307 | if (ret < 0) |
| 308 | goto out; |
| 309 | copied++; |
| 310 | |
| 311 | /* |
| 312 | * Write the remaining bytes using auto address |
| 313 | * increment mode |
| 314 | */ |
| 315 | bytes = min_t(uint32_t, mtd->writesize, len - i); |
| 316 | for (j = 1; j < bytes; j++, copied++) { |
| 317 | ret = sst25l_wait_till_ready(flash); |
| 318 | if (ret) |
| 319 | goto out; |
| 320 | |
| 321 | command[1] = buf[i + j]; |
| 322 | ret = spi_write(flash->spi, command, 2); |
| 323 | if (ret) |
| 324 | goto out; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | out: |
| 329 | ret = sst25l_write_enable(flash, 0); |
| 330 | |
| 331 | if (retlen) |
| 332 | *retlen = copied; |
| 333 | |
| 334 | mutex_unlock(&flash->lock); |
| 335 | return ret; |
| 336 | } |
| 337 | |
Fabio Estevam | 6b2995b | 2010-11-26 14:31:44 -0200 | [diff] [blame] | 338 | static struct flash_info *__devinit sst25l_match_device(struct spi_device *spi) |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 339 | { |
| 340 | struct flash_info *flash_info = NULL; |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 341 | struct spi_message m; |
| 342 | struct spi_transfer t; |
| 343 | unsigned char cmd_resp[6]; |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 344 | int i, err; |
| 345 | uint16_t id; |
| 346 | |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 347 | spi_message_init(&m); |
| 348 | memset(&t, 0, sizeof(struct spi_transfer)); |
| 349 | |
| 350 | cmd_resp[0] = SST25L_CMD_READ_ID; |
| 351 | cmd_resp[1] = 0; |
| 352 | cmd_resp[2] = 0; |
| 353 | cmd_resp[3] = 0; |
| 354 | cmd_resp[4] = 0xff; |
| 355 | cmd_resp[5] = 0xff; |
| 356 | t.tx_buf = cmd_resp; |
| 357 | t.rx_buf = cmd_resp; |
| 358 | t.len = sizeof(cmd_resp); |
| 359 | spi_message_add_tail(&t, &m); |
| 360 | err = spi_sync(spi, &m); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 361 | if (err < 0) { |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 362 | dev_err(&spi->dev, "error reading device id\n"); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 363 | return NULL; |
| 364 | } |
| 365 | |
H Hartley Sweeten | 0ffe0ce | 2010-04-29 13:34:24 -0500 | [diff] [blame] | 366 | id = (cmd_resp[4] << 8) | cmd_resp[5]; |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 367 | |
| 368 | for (i = 0; i < ARRAY_SIZE(sst25l_flash_info); i++) |
| 369 | if (sst25l_flash_info[i].device_id == id) |
| 370 | flash_info = &sst25l_flash_info[i]; |
| 371 | |
| 372 | if (!flash_info) |
| 373 | dev_err(&spi->dev, "unknown id %.4x\n", id); |
| 374 | |
| 375 | return flash_info; |
| 376 | } |
| 377 | |
Fabio Estevam | 6b2995b | 2010-11-26 14:31:44 -0200 | [diff] [blame] | 378 | static int __devinit sst25l_probe(struct spi_device *spi) |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 379 | { |
| 380 | struct flash_info *flash_info; |
| 381 | struct sst25l_flash *flash; |
| 382 | struct flash_platform_data *data; |
| 383 | int ret, i; |
Jamie Iles | 98b3979 | 2011-05-23 10:22:59 +0100 | [diff] [blame] | 384 | struct mtd_partition *parts = NULL; |
| 385 | int nr_parts = 0; |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 386 | |
| 387 | flash_info = sst25l_match_device(spi); |
| 388 | if (!flash_info) |
| 389 | return -ENODEV; |
| 390 | |
| 391 | flash = kzalloc(sizeof(struct sst25l_flash), GFP_KERNEL); |
| 392 | if (!flash) |
| 393 | return -ENOMEM; |
| 394 | |
| 395 | flash->spi = spi; |
| 396 | mutex_init(&flash->lock); |
| 397 | dev_set_drvdata(&spi->dev, flash); |
| 398 | |
| 399 | data = spi->dev.platform_data; |
| 400 | if (data && data->name) |
| 401 | flash->mtd.name = data->name; |
| 402 | else |
| 403 | flash->mtd.name = dev_name(&spi->dev); |
| 404 | |
| 405 | flash->mtd.type = MTD_NORFLASH; |
| 406 | flash->mtd.flags = MTD_CAP_NORFLASH; |
| 407 | flash->mtd.erasesize = flash_info->erase_size; |
| 408 | flash->mtd.writesize = flash_info->page_size; |
| 409 | flash->mtd.size = flash_info->page_size * flash_info->nr_pages; |
| 410 | flash->mtd.erase = sst25l_erase; |
| 411 | flash->mtd.read = sst25l_read; |
| 412 | flash->mtd.write = sst25l_write; |
| 413 | |
| 414 | dev_info(&spi->dev, "%s (%lld KiB)\n", flash_info->name, |
| 415 | (long long)flash->mtd.size >> 10); |
| 416 | |
| 417 | DEBUG(MTD_DEBUG_LEVEL2, |
| 418 | "mtd .name = %s, .size = 0x%llx (%lldMiB) " |
| 419 | ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n", |
| 420 | flash->mtd.name, |
| 421 | (long long)flash->mtd.size, (long long)(flash->mtd.size >> 20), |
| 422 | flash->mtd.erasesize, flash->mtd.erasesize / 1024, |
| 423 | flash->mtd.numeraseregions); |
| 424 | |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 425 | |
Jamie Iles | 98b3979 | 2011-05-23 10:22:59 +0100 | [diff] [blame] | 426 | if (mtd_has_cmdlinepart()) { |
| 427 | static const char *part_probes[] = {"cmdlinepart", NULL}; |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 428 | |
Jamie Iles | 98b3979 | 2011-05-23 10:22:59 +0100 | [diff] [blame] | 429 | nr_parts = parse_mtd_partitions(&flash->mtd, |
| 430 | part_probes, |
| 431 | &parts, 0); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 432 | } |
| 433 | |
Jamie Iles | 98b3979 | 2011-05-23 10:22:59 +0100 | [diff] [blame] | 434 | if (nr_parts <= 0 && data && data->parts) { |
| 435 | parts = data->parts; |
| 436 | nr_parts = data->nr_parts; |
| 437 | } |
| 438 | |
| 439 | if (nr_parts > 0) { |
| 440 | for (i = 0; i < nr_parts; i++) { |
| 441 | DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = " |
| 442 | "{.name = %s, .offset = 0x%llx, " |
| 443 | ".size = 0x%llx (%lldKiB) }\n", |
| 444 | i, parts[i].name, |
| 445 | (long long)parts[i].offset, |
| 446 | (long long)parts[i].size, |
| 447 | (long long)(parts[i].size >> 10)); |
| 448 | } |
| 449 | |
| 450 | flash->partitioned = 1; |
| 451 | return mtd_device_register(&flash->mtd, parts, |
| 452 | nr_parts); |
| 453 | } |
| 454 | |
| 455 | ret = mtd_device_register(&flash->mtd, NULL, 0); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 456 | if (ret == 1) { |
| 457 | kfree(flash); |
| 458 | dev_set_drvdata(&spi->dev, NULL); |
| 459 | return -ENODEV; |
| 460 | } |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
Mike Frysinger | 61cc827 | 2011-05-09 10:07:58 -0400 | [diff] [blame] | 465 | static int __devexit sst25l_remove(struct spi_device *spi) |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 466 | { |
| 467 | struct sst25l_flash *flash = dev_get_drvdata(&spi->dev); |
| 468 | int ret; |
| 469 | |
Jamie Iles | 98b3979 | 2011-05-23 10:22:59 +0100 | [diff] [blame] | 470 | ret = mtd_device_unregister(&flash->mtd); |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 471 | if (ret == 0) |
| 472 | kfree(flash); |
| 473 | return ret; |
| 474 | } |
| 475 | |
| 476 | static struct spi_driver sst25l_driver = { |
| 477 | .driver = { |
| 478 | .name = "sst25l", |
| 479 | .bus = &spi_bus_type, |
| 480 | .owner = THIS_MODULE, |
| 481 | }, |
| 482 | .probe = sst25l_probe, |
Mike Frysinger | 61cc827 | 2011-05-09 10:07:58 -0400 | [diff] [blame] | 483 | .remove = __devexit_p(sst25l_remove), |
Ryan Mallon | ec77e21 | 2009-09-18 12:51:40 -0700 | [diff] [blame] | 484 | }; |
| 485 | |
| 486 | static int __init sst25l_init(void) |
| 487 | { |
| 488 | return spi_register_driver(&sst25l_driver); |
| 489 | } |
| 490 | |
| 491 | static void __exit sst25l_exit(void) |
| 492 | { |
| 493 | spi_unregister_driver(&sst25l_driver); |
| 494 | } |
| 495 | |
| 496 | module_init(sst25l_init); |
| 497 | module_exit(sst25l_exit); |
| 498 | |
| 499 | MODULE_DESCRIPTION("MTD SPI driver for SST25L Flash chips"); |
| 500 | MODULE_AUTHOR("Andre Renaud <andre@bluewatersys.com>, " |
| 501 | "Ryan Mallon <ryan@bluewatersys.com>"); |
| 502 | MODULE_LICENSE("GPL"); |