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8d99758d AD |
1 | /* |
2 | * Copyright (c) 2011-2016 Synaptics Incorporated | |
3 | * Copyright (c) 2011 Unixphere | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/rmi.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/spi/spi.h> | |
15 | #include <linux/irq.h> | |
48147b97 | 16 | #include <linux/of.h> |
8d99758d AD |
17 | #include "rmi_driver.h" |
18 | ||
19 | #define RMI_SPI_DEFAULT_XFER_BUF_SIZE 64 | |
20 | ||
21 | #define RMI_PAGE_SELECT_REGISTER 0x00FF | |
22 | #define RMI_SPI_PAGE(addr) (((addr) >> 8) & 0x80) | |
23 | #define RMI_SPI_XFER_SIZE_LIMIT 255 | |
24 | ||
25 | #define BUFFER_SIZE_INCREMENT 32 | |
26 | ||
27 | enum rmi_spi_op { | |
28 | RMI_SPI_WRITE = 0, | |
29 | RMI_SPI_READ, | |
30 | RMI_SPI_V2_READ_UNIFIED, | |
31 | RMI_SPI_V2_READ_SPLIT, | |
32 | RMI_SPI_V2_WRITE, | |
33 | }; | |
34 | ||
35 | struct rmi_spi_cmd { | |
36 | enum rmi_spi_op op; | |
37 | u16 addr; | |
38 | }; | |
39 | ||
40 | struct rmi_spi_xport { | |
41 | struct rmi_transport_dev xport; | |
42 | struct spi_device *spi; | |
43 | ||
44 | struct mutex page_mutex; | |
45 | int page; | |
46 | ||
47 | int irq; | |
48 | ||
49 | u8 *rx_buf; | |
50 | u8 *tx_buf; | |
51 | int xfer_buf_size; | |
52 | ||
53 | struct spi_transfer *rx_xfers; | |
54 | struct spi_transfer *tx_xfers; | |
55 | int rx_xfer_count; | |
56 | int tx_xfer_count; | |
57 | }; | |
58 | ||
59 | static int rmi_spi_manage_pools(struct rmi_spi_xport *rmi_spi, int len) | |
60 | { | |
61 | struct spi_device *spi = rmi_spi->spi; | |
62 | int buf_size = rmi_spi->xfer_buf_size | |
63 | ? rmi_spi->xfer_buf_size : RMI_SPI_DEFAULT_XFER_BUF_SIZE; | |
64 | struct spi_transfer *xfer_buf; | |
65 | void *buf; | |
66 | void *tmp; | |
67 | ||
68 | while (buf_size < len) | |
69 | buf_size *= 2; | |
70 | ||
71 | if (buf_size > RMI_SPI_XFER_SIZE_LIMIT) | |
72 | buf_size = RMI_SPI_XFER_SIZE_LIMIT; | |
73 | ||
74 | tmp = rmi_spi->rx_buf; | |
75 | buf = devm_kzalloc(&spi->dev, buf_size * 2, | |
76 | GFP_KERNEL | GFP_DMA); | |
77 | if (!buf) | |
78 | return -ENOMEM; | |
79 | ||
80 | rmi_spi->rx_buf = buf; | |
81 | rmi_spi->tx_buf = &rmi_spi->rx_buf[buf_size]; | |
82 | rmi_spi->xfer_buf_size = buf_size; | |
83 | ||
84 | if (tmp) | |
85 | devm_kfree(&spi->dev, tmp); | |
86 | ||
87 | if (rmi_spi->xport.pdata.spi_data.read_delay_us) | |
88 | rmi_spi->rx_xfer_count = buf_size; | |
89 | else | |
90 | rmi_spi->rx_xfer_count = 1; | |
91 | ||
92 | if (rmi_spi->xport.pdata.spi_data.write_delay_us) | |
93 | rmi_spi->tx_xfer_count = buf_size; | |
94 | else | |
95 | rmi_spi->tx_xfer_count = 1; | |
96 | ||
97 | /* | |
98 | * Allocate a pool of spi_transfer buffers for devices which need | |
99 | * per byte delays. | |
100 | */ | |
101 | tmp = rmi_spi->rx_xfers; | |
102 | xfer_buf = devm_kzalloc(&spi->dev, | |
103 | (rmi_spi->rx_xfer_count + rmi_spi->tx_xfer_count) | |
104 | * sizeof(struct spi_transfer), GFP_KERNEL); | |
105 | if (!xfer_buf) | |
106 | return -ENOMEM; | |
107 | ||
108 | rmi_spi->rx_xfers = xfer_buf; | |
109 | rmi_spi->tx_xfers = &xfer_buf[rmi_spi->rx_xfer_count]; | |
110 | ||
111 | if (tmp) | |
112 | devm_kfree(&spi->dev, tmp); | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | static int rmi_spi_xfer(struct rmi_spi_xport *rmi_spi, | |
118 | const struct rmi_spi_cmd *cmd, const u8 *tx_buf, | |
119 | int tx_len, u8 *rx_buf, int rx_len) | |
120 | { | |
121 | struct spi_device *spi = rmi_spi->spi; | |
122 | struct rmi_device_platform_data_spi *spi_data = | |
123 | &rmi_spi->xport.pdata.spi_data; | |
124 | struct spi_message msg; | |
125 | struct spi_transfer *xfer; | |
126 | int ret = 0; | |
127 | int len; | |
128 | int cmd_len = 0; | |
129 | int total_tx_len; | |
130 | int i; | |
131 | u16 addr = cmd->addr; | |
132 | ||
133 | spi_message_init(&msg); | |
134 | ||
135 | switch (cmd->op) { | |
136 | case RMI_SPI_WRITE: | |
137 | case RMI_SPI_READ: | |
138 | cmd_len += 2; | |
139 | break; | |
140 | case RMI_SPI_V2_READ_UNIFIED: | |
141 | case RMI_SPI_V2_READ_SPLIT: | |
142 | case RMI_SPI_V2_WRITE: | |
143 | cmd_len += 4; | |
144 | break; | |
145 | } | |
146 | ||
147 | total_tx_len = cmd_len + tx_len; | |
148 | len = max(total_tx_len, rx_len); | |
149 | ||
150 | if (len > RMI_SPI_XFER_SIZE_LIMIT) | |
151 | return -EINVAL; | |
152 | ||
153 | if (rmi_spi->xfer_buf_size < len) | |
154 | rmi_spi_manage_pools(rmi_spi, len); | |
155 | ||
156 | if (addr == 0) | |
157 | /* | |
158 | * SPI needs an address. Use 0x7FF if we want to keep | |
159 | * reading from the last position of the register pointer. | |
160 | */ | |
161 | addr = 0x7FF; | |
162 | ||
163 | switch (cmd->op) { | |
164 | case RMI_SPI_WRITE: | |
165 | rmi_spi->tx_buf[0] = (addr >> 8); | |
166 | rmi_spi->tx_buf[1] = addr & 0xFF; | |
167 | break; | |
168 | case RMI_SPI_READ: | |
169 | rmi_spi->tx_buf[0] = (addr >> 8) | 0x80; | |
170 | rmi_spi->tx_buf[1] = addr & 0xFF; | |
171 | break; | |
172 | case RMI_SPI_V2_READ_UNIFIED: | |
173 | break; | |
174 | case RMI_SPI_V2_READ_SPLIT: | |
175 | break; | |
176 | case RMI_SPI_V2_WRITE: | |
177 | rmi_spi->tx_buf[0] = 0x40; | |
178 | rmi_spi->tx_buf[1] = (addr >> 8) & 0xFF; | |
179 | rmi_spi->tx_buf[2] = addr & 0xFF; | |
180 | rmi_spi->tx_buf[3] = tx_len; | |
181 | break; | |
182 | } | |
183 | ||
184 | if (tx_buf) | |
185 | memcpy(&rmi_spi->tx_buf[cmd_len], tx_buf, tx_len); | |
186 | ||
187 | if (rmi_spi->tx_xfer_count > 1) { | |
188 | for (i = 0; i < total_tx_len; i++) { | |
189 | xfer = &rmi_spi->tx_xfers[i]; | |
190 | memset(xfer, 0, sizeof(struct spi_transfer)); | |
191 | xfer->tx_buf = &rmi_spi->tx_buf[i]; | |
192 | xfer->len = 1; | |
193 | xfer->delay_usecs = spi_data->write_delay_us; | |
194 | spi_message_add_tail(xfer, &msg); | |
195 | } | |
196 | } else { | |
197 | xfer = rmi_spi->tx_xfers; | |
198 | memset(xfer, 0, sizeof(struct spi_transfer)); | |
199 | xfer->tx_buf = rmi_spi->tx_buf; | |
200 | xfer->len = total_tx_len; | |
201 | spi_message_add_tail(xfer, &msg); | |
202 | } | |
203 | ||
204 | rmi_dbg(RMI_DEBUG_XPORT, &spi->dev, "%s: cmd: %s tx_buf len: %d tx_buf: %*ph\n", | |
205 | __func__, cmd->op == RMI_SPI_WRITE ? "WRITE" : "READ", | |
206 | total_tx_len, total_tx_len, rmi_spi->tx_buf); | |
207 | ||
208 | if (rx_buf) { | |
209 | if (rmi_spi->rx_xfer_count > 1) { | |
210 | for (i = 0; i < rx_len; i++) { | |
211 | xfer = &rmi_spi->rx_xfers[i]; | |
212 | memset(xfer, 0, sizeof(struct spi_transfer)); | |
213 | xfer->rx_buf = &rmi_spi->rx_buf[i]; | |
214 | xfer->len = 1; | |
215 | xfer->delay_usecs = spi_data->read_delay_us; | |
216 | spi_message_add_tail(xfer, &msg); | |
217 | } | |
218 | } else { | |
219 | xfer = rmi_spi->rx_xfers; | |
220 | memset(xfer, 0, sizeof(struct spi_transfer)); | |
221 | xfer->rx_buf = rmi_spi->rx_buf; | |
222 | xfer->len = rx_len; | |
223 | spi_message_add_tail(xfer, &msg); | |
224 | } | |
225 | } | |
226 | ||
227 | ret = spi_sync(spi, &msg); | |
228 | if (ret < 0) { | |
229 | dev_err(&spi->dev, "spi xfer failed: %d\n", ret); | |
230 | return ret; | |
231 | } | |
232 | ||
233 | if (rx_buf) { | |
234 | memcpy(rx_buf, rmi_spi->rx_buf, rx_len); | |
235 | rmi_dbg(RMI_DEBUG_XPORT, &spi->dev, "%s: (%d) %*ph\n", | |
236 | __func__, rx_len, rx_len, rx_buf); | |
237 | } | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | /* | |
243 | * rmi_set_page - Set RMI page | |
244 | * @xport: The pointer to the rmi_transport_dev struct | |
245 | * @page: The new page address. | |
246 | * | |
247 | * RMI devices have 16-bit addressing, but some of the transport | |
248 | * implementations (like SMBus) only have 8-bit addressing. So RMI implements | |
249 | * a page address at 0xff of every page so we can reliable page addresses | |
250 | * every 256 registers. | |
251 | * | |
252 | * The page_mutex lock must be held when this function is entered. | |
253 | * | |
254 | * Returns zero on success, non-zero on failure. | |
255 | */ | |
256 | static int rmi_set_page(struct rmi_spi_xport *rmi_spi, u8 page) | |
257 | { | |
258 | struct rmi_spi_cmd cmd; | |
259 | int ret; | |
260 | ||
261 | cmd.op = RMI_SPI_WRITE; | |
262 | cmd.addr = RMI_PAGE_SELECT_REGISTER; | |
263 | ||
264 | ret = rmi_spi_xfer(rmi_spi, &cmd, &page, 1, NULL, 0); | |
265 | ||
266 | if (ret) | |
267 | rmi_spi->page = page; | |
268 | ||
269 | return ret; | |
270 | } | |
271 | ||
272 | static int rmi_spi_write_block(struct rmi_transport_dev *xport, u16 addr, | |
273 | const void *buf, size_t len) | |
274 | { | |
275 | struct rmi_spi_xport *rmi_spi = | |
276 | container_of(xport, struct rmi_spi_xport, xport); | |
277 | struct rmi_spi_cmd cmd; | |
278 | int ret; | |
279 | ||
280 | mutex_lock(&rmi_spi->page_mutex); | |
281 | ||
282 | if (RMI_SPI_PAGE(addr) != rmi_spi->page) { | |
283 | ret = rmi_set_page(rmi_spi, RMI_SPI_PAGE(addr)); | |
284 | if (ret) | |
285 | goto exit; | |
286 | } | |
287 | ||
288 | cmd.op = RMI_SPI_WRITE; | |
289 | cmd.addr = addr; | |
290 | ||
291 | ret = rmi_spi_xfer(rmi_spi, &cmd, buf, len, NULL, 0); | |
292 | ||
293 | exit: | |
294 | mutex_unlock(&rmi_spi->page_mutex); | |
295 | return ret; | |
296 | } | |
297 | ||
298 | static int rmi_spi_read_block(struct rmi_transport_dev *xport, u16 addr, | |
299 | void *buf, size_t len) | |
300 | { | |
301 | struct rmi_spi_xport *rmi_spi = | |
302 | container_of(xport, struct rmi_spi_xport, xport); | |
303 | struct rmi_spi_cmd cmd; | |
304 | int ret; | |
305 | ||
306 | mutex_lock(&rmi_spi->page_mutex); | |
307 | ||
308 | if (RMI_SPI_PAGE(addr) != rmi_spi->page) { | |
309 | ret = rmi_set_page(rmi_spi, RMI_SPI_PAGE(addr)); | |
310 | if (ret) | |
311 | goto exit; | |
312 | } | |
313 | ||
314 | cmd.op = RMI_SPI_READ; | |
315 | cmd.addr = addr; | |
316 | ||
317 | ret = rmi_spi_xfer(rmi_spi, &cmd, NULL, 0, buf, len); | |
318 | ||
319 | exit: | |
320 | mutex_unlock(&rmi_spi->page_mutex); | |
321 | return ret; | |
322 | } | |
323 | ||
324 | static const struct rmi_transport_ops rmi_spi_ops = { | |
325 | .write_block = rmi_spi_write_block, | |
326 | .read_block = rmi_spi_read_block, | |
327 | }; | |
328 | ||
329 | static irqreturn_t rmi_spi_irq(int irq, void *dev_id) | |
330 | { | |
331 | struct rmi_spi_xport *rmi_spi = dev_id; | |
332 | struct rmi_device *rmi_dev = rmi_spi->xport.rmi_dev; | |
333 | int ret; | |
334 | ||
335 | ret = rmi_process_interrupt_requests(rmi_dev); | |
336 | if (ret) | |
337 | rmi_dbg(RMI_DEBUG_XPORT, &rmi_dev->dev, | |
338 | "Failed to process interrupt request: %d\n", ret); | |
339 | ||
340 | return IRQ_HANDLED; | |
341 | } | |
342 | ||
343 | static int rmi_spi_init_irq(struct spi_device *spi) | |
344 | { | |
345 | struct rmi_spi_xport *rmi_spi = spi_get_drvdata(spi); | |
346 | int irq_flags = irqd_get_trigger_type(irq_get_irq_data(rmi_spi->irq)); | |
347 | int ret; | |
348 | ||
349 | if (!irq_flags) | |
350 | irq_flags = IRQF_TRIGGER_LOW; | |
351 | ||
352 | ret = devm_request_threaded_irq(&spi->dev, rmi_spi->irq, NULL, | |
353 | rmi_spi_irq, irq_flags | IRQF_ONESHOT, | |
354 | dev_name(&spi->dev), rmi_spi); | |
355 | if (ret < 0) { | |
356 | dev_warn(&spi->dev, "Failed to register interrupt %d\n", | |
357 | rmi_spi->irq); | |
358 | return ret; | |
359 | } | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
48147b97 AD |
364 | #ifdef CONFIG_OF |
365 | static int rmi_spi_of_probe(struct spi_device *spi, | |
366 | struct rmi_device_platform_data *pdata) | |
367 | { | |
368 | struct device *dev = &spi->dev; | |
369 | int retval; | |
370 | ||
371 | retval = rmi_of_property_read_u32(dev, | |
372 | &pdata->spi_data.read_delay_us, | |
373 | "spi-rx-delay-us", 1); | |
374 | if (retval) | |
375 | return retval; | |
376 | ||
377 | retval = rmi_of_property_read_u32(dev, | |
378 | &pdata->spi_data.write_delay_us, | |
379 | "spi-tx-delay-us", 1); | |
380 | if (retval) | |
381 | return retval; | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static const struct of_device_id rmi_spi_of_match[] = { | |
387 | { .compatible = "syna,rmi4-spi" }, | |
388 | {}, | |
389 | }; | |
390 | MODULE_DEVICE_TABLE(of, rmi_spi_of_match); | |
391 | #else | |
392 | static inline int rmi_spi_of_probe(struct spi_device *spi, | |
393 | struct rmi_device_platform_data *pdata) | |
394 | { | |
395 | return -ENODEV; | |
396 | } | |
397 | #endif | |
398 | ||
8d99758d AD |
399 | static int rmi_spi_probe(struct spi_device *spi) |
400 | { | |
401 | struct rmi_spi_xport *rmi_spi; | |
402 | struct rmi_device_platform_data *pdata; | |
403 | struct rmi_device_platform_data *spi_pdata = spi->dev.platform_data; | |
404 | int retval; | |
405 | ||
406 | if (spi->master->flags & SPI_MASTER_HALF_DUPLEX) | |
407 | return -EINVAL; | |
408 | ||
409 | rmi_spi = devm_kzalloc(&spi->dev, sizeof(struct rmi_spi_xport), | |
410 | GFP_KERNEL); | |
411 | if (!rmi_spi) | |
412 | return -ENOMEM; | |
413 | ||
414 | pdata = &rmi_spi->xport.pdata; | |
415 | ||
48147b97 AD |
416 | if (spi->dev.of_node) { |
417 | retval = rmi_spi_of_probe(spi, pdata); | |
418 | if (retval) | |
419 | return retval; | |
420 | } else if (spi_pdata) { | |
8d99758d | 421 | *pdata = *spi_pdata; |
48147b97 | 422 | } |
8d99758d AD |
423 | |
424 | if (pdata->spi_data.bits_per_word) | |
425 | spi->bits_per_word = pdata->spi_data.bits_per_word; | |
426 | ||
427 | if (pdata->spi_data.mode) | |
428 | spi->mode = pdata->spi_data.mode; | |
429 | ||
430 | retval = spi_setup(spi); | |
431 | if (retval < 0) { | |
432 | dev_err(&spi->dev, "spi_setup failed!\n"); | |
433 | return retval; | |
434 | } | |
435 | ||
436 | if (spi->irq > 0) | |
437 | rmi_spi->irq = spi->irq; | |
438 | ||
439 | rmi_spi->spi = spi; | |
440 | mutex_init(&rmi_spi->page_mutex); | |
441 | ||
442 | rmi_spi->xport.dev = &spi->dev; | |
443 | rmi_spi->xport.proto_name = "spi"; | |
444 | rmi_spi->xport.ops = &rmi_spi_ops; | |
445 | ||
446 | spi_set_drvdata(spi, rmi_spi); | |
447 | ||
448 | retval = rmi_spi_manage_pools(rmi_spi, RMI_SPI_DEFAULT_XFER_BUF_SIZE); | |
449 | if (retval) | |
450 | return retval; | |
451 | ||
452 | /* | |
453 | * Setting the page to zero will (a) make sure the PSR is in a | |
454 | * known state, and (b) make sure we can talk to the device. | |
455 | */ | |
456 | retval = rmi_set_page(rmi_spi, 0); | |
457 | if (retval) { | |
458 | dev_err(&spi->dev, "Failed to set page select to 0.\n"); | |
459 | return retval; | |
460 | } | |
461 | ||
462 | retval = rmi_register_transport_device(&rmi_spi->xport); | |
463 | if (retval) { | |
464 | dev_err(&spi->dev, "failed to register transport.\n"); | |
465 | return retval; | |
466 | } | |
467 | ||
468 | retval = rmi_spi_init_irq(spi); | |
469 | if (retval < 0) | |
470 | return retval; | |
471 | ||
472 | dev_info(&spi->dev, "registered RMI SPI driver\n"); | |
473 | return 0; | |
474 | } | |
475 | ||
476 | static int rmi_spi_remove(struct spi_device *spi) | |
477 | { | |
478 | struct rmi_spi_xport *rmi_spi = spi_get_drvdata(spi); | |
479 | ||
480 | rmi_unregister_transport_device(&rmi_spi->xport); | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | #ifdef CONFIG_PM_SLEEP | |
486 | static int rmi_spi_suspend(struct device *dev) | |
487 | { | |
488 | struct spi_device *spi = to_spi_device(dev); | |
489 | struct rmi_spi_xport *rmi_spi = spi_get_drvdata(spi); | |
490 | int ret; | |
491 | ||
492 | ret = rmi_driver_suspend(rmi_spi->xport.rmi_dev); | |
493 | if (ret) | |
494 | dev_warn(dev, "Failed to resume device: %d\n", ret); | |
495 | ||
496 | disable_irq(rmi_spi->irq); | |
497 | if (device_may_wakeup(&spi->dev)) { | |
498 | ret = enable_irq_wake(rmi_spi->irq); | |
499 | if (!ret) | |
500 | dev_warn(dev, "Failed to enable irq for wake: %d\n", | |
501 | ret); | |
502 | } | |
503 | return ret; | |
504 | } | |
505 | ||
506 | static int rmi_spi_resume(struct device *dev) | |
507 | { | |
508 | struct spi_device *spi = to_spi_device(dev); | |
509 | struct rmi_spi_xport *rmi_spi = spi_get_drvdata(spi); | |
510 | int ret; | |
511 | ||
512 | enable_irq(rmi_spi->irq); | |
513 | if (device_may_wakeup(&spi->dev)) { | |
514 | ret = disable_irq_wake(rmi_spi->irq); | |
515 | if (!ret) | |
516 | dev_warn(dev, "Failed to disable irq for wake: %d\n", | |
517 | ret); | |
518 | } | |
519 | ||
520 | ret = rmi_driver_resume(rmi_spi->xport.rmi_dev); | |
521 | if (ret) | |
522 | dev_warn(dev, "Failed to resume device: %d\n", ret); | |
523 | ||
524 | return ret; | |
525 | } | |
526 | #endif | |
527 | ||
528 | #ifdef CONFIG_PM | |
529 | static int rmi_spi_runtime_suspend(struct device *dev) | |
530 | { | |
531 | struct spi_device *spi = to_spi_device(dev); | |
532 | struct rmi_spi_xport *rmi_spi = spi_get_drvdata(spi); | |
533 | int ret; | |
534 | ||
535 | ret = rmi_driver_suspend(rmi_spi->xport.rmi_dev); | |
536 | if (ret) | |
537 | dev_warn(dev, "Failed to resume device: %d\n", ret); | |
538 | ||
539 | disable_irq(rmi_spi->irq); | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
544 | static int rmi_spi_runtime_resume(struct device *dev) | |
545 | { | |
546 | struct spi_device *spi = to_spi_device(dev); | |
547 | struct rmi_spi_xport *rmi_spi = spi_get_drvdata(spi); | |
548 | int ret; | |
549 | ||
550 | enable_irq(rmi_spi->irq); | |
551 | ||
552 | ret = rmi_driver_resume(rmi_spi->xport.rmi_dev); | |
553 | if (ret) | |
554 | dev_warn(dev, "Failed to resume device: %d\n", ret); | |
555 | ||
556 | return 0; | |
557 | } | |
558 | #endif | |
559 | ||
560 | static const struct dev_pm_ops rmi_spi_pm = { | |
561 | SET_SYSTEM_SLEEP_PM_OPS(rmi_spi_suspend, rmi_spi_resume) | |
562 | SET_RUNTIME_PM_OPS(rmi_spi_runtime_suspend, rmi_spi_runtime_resume, | |
563 | NULL) | |
564 | }; | |
565 | ||
566 | static const struct spi_device_id rmi_id[] = { | |
567 | { "rmi4_spi", 0 }, | |
568 | { } | |
569 | }; | |
570 | MODULE_DEVICE_TABLE(spi, rmi_id); | |
571 | ||
572 | static struct spi_driver rmi_spi_driver = { | |
573 | .driver = { | |
574 | .name = "rmi4_spi", | |
575 | .pm = &rmi_spi_pm, | |
48147b97 | 576 | .of_match_table = of_match_ptr(rmi_spi_of_match), |
8d99758d AD |
577 | }, |
578 | .id_table = rmi_id, | |
579 | .probe = rmi_spi_probe, | |
580 | .remove = rmi_spi_remove, | |
581 | }; | |
582 | ||
583 | module_spi_driver(rmi_spi_driver); | |
584 | ||
585 | MODULE_AUTHOR("Christopher Heiny <cheiny@synaptics.com>"); | |
586 | MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>"); | |
587 | MODULE_DESCRIPTION("RMI SPI driver"); | |
588 | MODULE_LICENSE("GPL"); | |
589 | MODULE_VERSION(RMI_DRIVER_VERSION); |