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6eebf35b OC |
1 | /* |
2 | * rt5514-spi.c -- RT5514 SPI driver | |
3 | * | |
4 | * Copyright 2015 Realtek Semiconductor Corp. | |
5 | * Author: Oder Chiou <oder_chiou@realtek.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/input.h> | |
14 | #include <linux/spi/spi.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/irq.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/gpio.h> | |
22 | #include <linux/sched.h> | |
6eebf35b | 23 | #include <linux/uaccess.h> |
6eebf35b OC |
24 | #include <linux/regulator/consumer.h> |
25 | #include <linux/pm_qos.h> | |
26 | #include <linux/sysfs.h> | |
27 | #include <linux/clk.h> | |
28 | #include <sound/core.h> | |
29 | #include <sound/pcm.h> | |
30 | #include <sound/pcm_params.h> | |
31 | #include <sound/soc.h> | |
32 | #include <sound/soc-dapm.h> | |
33 | #include <sound/initval.h> | |
34 | #include <sound/tlv.h> | |
35 | ||
36 | #include "rt5514-spi.h" | |
37 | ||
38 | static struct spi_device *rt5514_spi; | |
39 | ||
40 | struct rt5514_dsp { | |
41 | struct device *dev; | |
42 | struct delayed_work copy_work; | |
43 | struct mutex dma_lock; | |
44 | struct snd_pcm_substream *substream; | |
45 | unsigned int buf_base, buf_limit, buf_rp; | |
173f4612 | 46 | size_t buf_size, get_size, dma_offset; |
6eebf35b OC |
47 | }; |
48 | ||
49 | static const struct snd_pcm_hardware rt5514_spi_pcm_hardware = { | |
50 | .info = SNDRV_PCM_INFO_MMAP | | |
51 | SNDRV_PCM_INFO_MMAP_VALID | | |
52 | SNDRV_PCM_INFO_INTERLEAVED, | |
53 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
54 | .period_bytes_min = PAGE_SIZE, | |
55 | .period_bytes_max = 0x20000 / 8, | |
56 | .periods_min = 8, | |
57 | .periods_max = 8, | |
58 | .channels_min = 1, | |
59 | .channels_max = 1, | |
60 | .buffer_bytes_max = 0x20000, | |
61 | }; | |
62 | ||
63 | static struct snd_soc_dai_driver rt5514_spi_dai = { | |
64 | .name = "rt5514-dsp-cpu-dai", | |
65 | .id = 0, | |
66 | .capture = { | |
67 | .stream_name = "DSP Capture", | |
68 | .channels_min = 1, | |
69 | .channels_max = 1, | |
70 | .rates = SNDRV_PCM_RATE_16000, | |
71 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
72 | }, | |
73 | }; | |
74 | ||
75 | static void rt5514_spi_copy_work(struct work_struct *work) | |
76 | { | |
77 | struct rt5514_dsp *rt5514_dsp = | |
78 | container_of(work, struct rt5514_dsp, copy_work.work); | |
b63d4d13 | 79 | struct snd_pcm_runtime *runtime; |
6eebf35b | 80 | size_t period_bytes, truncated_bytes = 0; |
173f4612 | 81 | unsigned int cur_wp, remain_data; |
82 | u8 buf[8]; | |
6eebf35b OC |
83 | |
84 | mutex_lock(&rt5514_dsp->dma_lock); | |
85 | if (!rt5514_dsp->substream) { | |
86 | dev_err(rt5514_dsp->dev, "No pcm substream\n"); | |
87 | goto done; | |
88 | } | |
89 | ||
b63d4d13 | 90 | runtime = rt5514_dsp->substream->runtime; |
6eebf35b OC |
91 | period_bytes = snd_pcm_lib_period_bytes(rt5514_dsp->substream); |
92 | ||
173f4612 | 93 | if (rt5514_dsp->get_size >= rt5514_dsp->buf_size) { |
94 | rt5514_spi_burst_read(RT5514_BUFFER_VOICE_WP, (u8 *)&buf, | |
95 | sizeof(buf)); | |
96 | cur_wp = buf[0] | buf[1] << 8 | buf[2] << 16 | | |
97 | buf[3] << 24; | |
98 | ||
99 | if (cur_wp >= rt5514_dsp->buf_rp) | |
100 | remain_data = (cur_wp - rt5514_dsp->buf_rp); | |
101 | else | |
102 | remain_data = | |
103 | (rt5514_dsp->buf_limit - rt5514_dsp->buf_rp) + | |
104 | (cur_wp - rt5514_dsp->buf_base); | |
105 | ||
106 | if (remain_data < period_bytes) { | |
107 | schedule_delayed_work(&rt5514_dsp->copy_work, 5); | |
108 | goto done; | |
109 | } | |
110 | } | |
6eebf35b OC |
111 | |
112 | if (rt5514_dsp->buf_rp + period_bytes <= rt5514_dsp->buf_limit) { | |
113 | rt5514_spi_burst_read(rt5514_dsp->buf_rp, | |
114 | runtime->dma_area + rt5514_dsp->dma_offset, | |
115 | period_bytes); | |
116 | ||
117 | if (rt5514_dsp->buf_rp + period_bytes == rt5514_dsp->buf_limit) | |
118 | rt5514_dsp->buf_rp = rt5514_dsp->buf_base; | |
119 | else | |
120 | rt5514_dsp->buf_rp += period_bytes; | |
121 | } else { | |
122 | truncated_bytes = rt5514_dsp->buf_limit - rt5514_dsp->buf_rp; | |
123 | rt5514_spi_burst_read(rt5514_dsp->buf_rp, | |
124 | runtime->dma_area + rt5514_dsp->dma_offset, | |
125 | truncated_bytes); | |
126 | ||
127 | rt5514_spi_burst_read(rt5514_dsp->buf_base, | |
128 | runtime->dma_area + rt5514_dsp->dma_offset + | |
129 | truncated_bytes, period_bytes - truncated_bytes); | |
130 | ||
173f4612 | 131 | rt5514_dsp->buf_rp = rt5514_dsp->buf_base + period_bytes - |
132 | truncated_bytes; | |
6eebf35b OC |
133 | } |
134 | ||
173f4612 | 135 | rt5514_dsp->get_size += period_bytes; |
6eebf35b OC |
136 | rt5514_dsp->dma_offset += period_bytes; |
137 | if (rt5514_dsp->dma_offset >= runtime->dma_bytes) | |
138 | rt5514_dsp->dma_offset = 0; | |
139 | ||
6eebf35b OC |
140 | snd_pcm_period_elapsed(rt5514_dsp->substream); |
141 | ||
173f4612 | 142 | schedule_delayed_work(&rt5514_dsp->copy_work, 5); |
143 | ||
6eebf35b OC |
144 | done: |
145 | mutex_unlock(&rt5514_dsp->dma_lock); | |
146 | } | |
147 | ||
659178f5 | 148 | static void rt5514_schedule_copy(struct rt5514_dsp *rt5514_dsp) |
173f4612 | 149 | { |
c4a71ff7 | 150 | size_t period_bytes; |
173f4612 | 151 | u8 buf[8]; |
152 | ||
c4a71ff7 OC |
153 | if (!rt5514_dsp->substream) |
154 | return; | |
155 | ||
156 | period_bytes = snd_pcm_lib_period_bytes(rt5514_dsp->substream); | |
173f4612 | 157 | rt5514_dsp->get_size = 0; |
173f4612 | 158 | |
159 | /** | |
160 | * The address area x1800XXXX is the register address, and it cannot | |
161 | * support spi burst read perfectly. So we use the spi burst read | |
162 | * individually to make sure the data correctly. | |
163 | */ | |
164 | rt5514_spi_burst_read(RT5514_BUFFER_VOICE_BASE, (u8 *)&buf, | |
165 | sizeof(buf)); | |
166 | rt5514_dsp->buf_base = buf[0] | buf[1] << 8 | buf[2] << 16 | | |
167 | buf[3] << 24; | |
168 | ||
169 | rt5514_spi_burst_read(RT5514_BUFFER_VOICE_LIMIT, (u8 *)&buf, | |
170 | sizeof(buf)); | |
171 | rt5514_dsp->buf_limit = buf[0] | buf[1] << 8 | buf[2] << 16 | | |
172 | buf[3] << 24; | |
173 | ||
174 | rt5514_spi_burst_read(RT5514_BUFFER_VOICE_WP, (u8 *)&buf, | |
175 | sizeof(buf)); | |
176 | rt5514_dsp->buf_rp = buf[0] | buf[1] << 8 | buf[2] << 16 | | |
177 | buf[3] << 24; | |
178 | ||
818010da | 179 | if (rt5514_dsp->buf_rp % 8) |
180 | rt5514_dsp->buf_rp = (rt5514_dsp->buf_rp / 8) * 8; | |
181 | ||
173f4612 | 182 | rt5514_dsp->buf_size = rt5514_dsp->buf_limit - rt5514_dsp->buf_base; |
183 | ||
c4a71ff7 OC |
184 | if (rt5514_dsp->buf_size % period_bytes) |
185 | rt5514_dsp->buf_size = (rt5514_dsp->buf_size / period_bytes) * | |
186 | period_bytes; | |
187 | ||
818010da | 188 | if (rt5514_dsp->buf_base && rt5514_dsp->buf_limit && |
189 | rt5514_dsp->buf_rp && rt5514_dsp->buf_size) | |
190 | schedule_delayed_work(&rt5514_dsp->copy_work, 0); | |
659178f5 HYC |
191 | } |
192 | ||
193 | static irqreturn_t rt5514_spi_irq(int irq, void *data) | |
194 | { | |
195 | struct rt5514_dsp *rt5514_dsp = data; | |
196 | ||
197 | rt5514_schedule_copy(rt5514_dsp); | |
173f4612 | 198 | |
199 | return IRQ_HANDLED; | |
200 | } | |
201 | ||
6eebf35b OC |
202 | /* PCM for streaming audio from the DSP buffer */ |
203 | static int rt5514_spi_pcm_open(struct snd_pcm_substream *substream) | |
204 | { | |
205 | snd_soc_set_runtime_hwparams(substream, &rt5514_spi_pcm_hardware); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static int rt5514_spi_hw_params(struct snd_pcm_substream *substream, | |
211 | struct snd_pcm_hw_params *hw_params) | |
212 | { | |
213 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
214 | struct rt5514_dsp *rt5514_dsp = | |
215 | snd_soc_platform_get_drvdata(rtd->platform); | |
216 | int ret; | |
659178f5 | 217 | u8 buf[8]; |
6eebf35b OC |
218 | |
219 | mutex_lock(&rt5514_dsp->dma_lock); | |
220 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
221 | params_buffer_bytes(hw_params)); | |
222 | rt5514_dsp->substream = substream; | |
b56bff43 | 223 | rt5514_dsp->dma_offset = 0; |
659178f5 HYC |
224 | |
225 | /* Read IRQ status and schedule copy accordingly. */ | |
226 | rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, sizeof(buf)); | |
227 | if (buf[0] & RT5514_IRQ_STATUS_BIT) | |
228 | rt5514_schedule_copy(rt5514_dsp); | |
229 | ||
6eebf35b OC |
230 | mutex_unlock(&rt5514_dsp->dma_lock); |
231 | ||
232 | return ret; | |
233 | } | |
234 | ||
235 | static int rt5514_spi_hw_free(struct snd_pcm_substream *substream) | |
236 | { | |
237 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
238 | struct rt5514_dsp *rt5514_dsp = | |
239 | snd_soc_platform_get_drvdata(rtd->platform); | |
240 | ||
241 | mutex_lock(&rt5514_dsp->dma_lock); | |
242 | rt5514_dsp->substream = NULL; | |
243 | mutex_unlock(&rt5514_dsp->dma_lock); | |
244 | ||
245 | cancel_delayed_work_sync(&rt5514_dsp->copy_work); | |
246 | ||
247 | return snd_pcm_lib_free_vmalloc_buffer(substream); | |
248 | } | |
249 | ||
6eebf35b OC |
250 | static snd_pcm_uframes_t rt5514_spi_pcm_pointer( |
251 | struct snd_pcm_substream *substream) | |
252 | { | |
253 | struct snd_pcm_runtime *runtime = substream->runtime; | |
254 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
255 | struct rt5514_dsp *rt5514_dsp = | |
256 | snd_soc_platform_get_drvdata(rtd->platform); | |
257 | ||
258 | return bytes_to_frames(runtime, rt5514_dsp->dma_offset); | |
259 | } | |
260 | ||
115c7254 | 261 | static const struct snd_pcm_ops rt5514_spi_pcm_ops = { |
6eebf35b OC |
262 | .open = rt5514_spi_pcm_open, |
263 | .hw_params = rt5514_spi_hw_params, | |
264 | .hw_free = rt5514_spi_hw_free, | |
6eebf35b OC |
265 | .pointer = rt5514_spi_pcm_pointer, |
266 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
267 | .page = snd_pcm_lib_get_vmalloc_page, | |
268 | }; | |
269 | ||
270 | static int rt5514_spi_pcm_probe(struct snd_soc_platform *platform) | |
271 | { | |
272 | struct rt5514_dsp *rt5514_dsp; | |
173f4612 | 273 | int ret; |
6eebf35b OC |
274 | |
275 | rt5514_dsp = devm_kzalloc(platform->dev, sizeof(*rt5514_dsp), | |
276 | GFP_KERNEL); | |
277 | ||
278 | rt5514_dsp->dev = &rt5514_spi->dev; | |
279 | mutex_init(&rt5514_dsp->dma_lock); | |
280 | INIT_DELAYED_WORK(&rt5514_dsp->copy_work, rt5514_spi_copy_work); | |
281 | snd_soc_platform_set_drvdata(platform, rt5514_dsp); | |
282 | ||
173f4612 | 283 | if (rt5514_spi->irq) { |
284 | ret = devm_request_threaded_irq(&rt5514_spi->dev, | |
285 | rt5514_spi->irq, NULL, rt5514_spi_irq, | |
286 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "rt5514-spi", | |
287 | rt5514_dsp); | |
288 | if (ret) | |
289 | dev_err(&rt5514_spi->dev, | |
290 | "%s Failed to reguest IRQ: %d\n", __func__, | |
291 | ret); | |
20220945 BN |
292 | else |
293 | device_init_wakeup(rt5514_dsp->dev, true); | |
173f4612 | 294 | } |
295 | ||
6eebf35b OC |
296 | return 0; |
297 | } | |
298 | ||
0ed6f157 | 299 | static const struct snd_soc_platform_driver rt5514_spi_platform = { |
6eebf35b OC |
300 | .probe = rt5514_spi_pcm_probe, |
301 | .ops = &rt5514_spi_pcm_ops, | |
302 | }; | |
303 | ||
304 | static const struct snd_soc_component_driver rt5514_spi_dai_component = { | |
305 | .name = "rt5514-spi-dai", | |
306 | }; | |
307 | ||
308 | /** | |
309 | * rt5514_spi_burst_read - Read data from SPI by rt5514 address. | |
310 | * @addr: Start address. | |
311 | * @rxbuf: Data Buffer for reading. | |
312 | * @len: Data length, it must be a multiple of 8. | |
313 | * | |
314 | * | |
315 | * Returns true for success. | |
316 | */ | |
317 | int rt5514_spi_burst_read(unsigned int addr, u8 *rxbuf, size_t len) | |
318 | { | |
319 | u8 spi_cmd = RT5514_SPI_CMD_BURST_READ; | |
320 | int status; | |
321 | u8 write_buf[8]; | |
322 | unsigned int i, end, offset = 0; | |
323 | ||
324 | struct spi_message message; | |
325 | struct spi_transfer x[3]; | |
326 | ||
327 | while (offset < len) { | |
328 | if (offset + RT5514_SPI_BUF_LEN <= len) | |
329 | end = RT5514_SPI_BUF_LEN; | |
330 | else | |
331 | end = len % RT5514_SPI_BUF_LEN; | |
332 | ||
333 | write_buf[0] = spi_cmd; | |
334 | write_buf[1] = ((addr + offset) & 0xff000000) >> 24; | |
335 | write_buf[2] = ((addr + offset) & 0x00ff0000) >> 16; | |
336 | write_buf[3] = ((addr + offset) & 0x0000ff00) >> 8; | |
337 | write_buf[4] = ((addr + offset) & 0x000000ff) >> 0; | |
338 | ||
339 | spi_message_init(&message); | |
340 | memset(x, 0, sizeof(x)); | |
341 | ||
342 | x[0].len = 5; | |
343 | x[0].tx_buf = write_buf; | |
344 | spi_message_add_tail(&x[0], &message); | |
345 | ||
346 | x[1].len = 4; | |
347 | x[1].tx_buf = write_buf; | |
348 | spi_message_add_tail(&x[1], &message); | |
349 | ||
350 | x[2].len = end; | |
351 | x[2].rx_buf = rxbuf + offset; | |
352 | spi_message_add_tail(&x[2], &message); | |
353 | ||
354 | status = spi_sync(rt5514_spi, &message); | |
355 | ||
356 | if (status) | |
357 | return false; | |
358 | ||
359 | offset += RT5514_SPI_BUF_LEN; | |
360 | } | |
361 | ||
362 | for (i = 0; i < len; i += 8) { | |
363 | write_buf[0] = rxbuf[i + 0]; | |
364 | write_buf[1] = rxbuf[i + 1]; | |
365 | write_buf[2] = rxbuf[i + 2]; | |
366 | write_buf[3] = rxbuf[i + 3]; | |
367 | write_buf[4] = rxbuf[i + 4]; | |
368 | write_buf[5] = rxbuf[i + 5]; | |
369 | write_buf[6] = rxbuf[i + 6]; | |
370 | write_buf[7] = rxbuf[i + 7]; | |
371 | ||
372 | rxbuf[i + 0] = write_buf[7]; | |
373 | rxbuf[i + 1] = write_buf[6]; | |
374 | rxbuf[i + 2] = write_buf[5]; | |
375 | rxbuf[i + 3] = write_buf[4]; | |
376 | rxbuf[i + 4] = write_buf[3]; | |
377 | rxbuf[i + 5] = write_buf[2]; | |
378 | rxbuf[i + 6] = write_buf[1]; | |
379 | rxbuf[i + 7] = write_buf[0]; | |
380 | } | |
381 | ||
382 | return true; | |
383 | } | |
384 | ||
385 | /** | |
386 | * rt5514_spi_burst_write - Write data to SPI by rt5514 address. | |
387 | * @addr: Start address. | |
388 | * @txbuf: Data Buffer for writng. | |
389 | * @len: Data length, it must be a multiple of 8. | |
390 | * | |
391 | * | |
392 | * Returns true for success. | |
393 | */ | |
394 | int rt5514_spi_burst_write(u32 addr, const u8 *txbuf, size_t len) | |
395 | { | |
396 | u8 spi_cmd = RT5514_SPI_CMD_BURST_WRITE; | |
397 | u8 *write_buf; | |
398 | unsigned int i, end, offset = 0; | |
399 | ||
400 | write_buf = kmalloc(RT5514_SPI_BUF_LEN + 6, GFP_KERNEL); | |
401 | ||
402 | if (write_buf == NULL) | |
403 | return -ENOMEM; | |
404 | ||
405 | while (offset < len) { | |
406 | if (offset + RT5514_SPI_BUF_LEN <= len) | |
407 | end = RT5514_SPI_BUF_LEN; | |
408 | else | |
409 | end = len % RT5514_SPI_BUF_LEN; | |
410 | ||
411 | write_buf[0] = spi_cmd; | |
412 | write_buf[1] = ((addr + offset) & 0xff000000) >> 24; | |
413 | write_buf[2] = ((addr + offset) & 0x00ff0000) >> 16; | |
414 | write_buf[3] = ((addr + offset) & 0x0000ff00) >> 8; | |
415 | write_buf[4] = ((addr + offset) & 0x000000ff) >> 0; | |
416 | ||
417 | for (i = 0; i < end; i += 8) { | |
418 | write_buf[i + 12] = txbuf[offset + i + 0]; | |
419 | write_buf[i + 11] = txbuf[offset + i + 1]; | |
420 | write_buf[i + 10] = txbuf[offset + i + 2]; | |
421 | write_buf[i + 9] = txbuf[offset + i + 3]; | |
422 | write_buf[i + 8] = txbuf[offset + i + 4]; | |
423 | write_buf[i + 7] = txbuf[offset + i + 5]; | |
424 | write_buf[i + 6] = txbuf[offset + i + 6]; | |
425 | write_buf[i + 5] = txbuf[offset + i + 7]; | |
426 | } | |
427 | ||
428 | write_buf[end + 5] = spi_cmd; | |
429 | ||
430 | spi_write(rt5514_spi, write_buf, end + 6); | |
431 | ||
432 | offset += RT5514_SPI_BUF_LEN; | |
433 | } | |
434 | ||
435 | kfree(write_buf); | |
436 | ||
437 | return 0; | |
438 | } | |
439 | EXPORT_SYMBOL_GPL(rt5514_spi_burst_write); | |
440 | ||
441 | static int rt5514_spi_probe(struct spi_device *spi) | |
442 | { | |
443 | int ret; | |
444 | ||
445 | rt5514_spi = spi; | |
446 | ||
e9802c57 | 447 | ret = devm_snd_soc_register_platform(&spi->dev, &rt5514_spi_platform); |
6eebf35b OC |
448 | if (ret < 0) { |
449 | dev_err(&spi->dev, "Failed to register platform.\n"); | |
e9802c57 | 450 | return ret; |
6eebf35b OC |
451 | } |
452 | ||
e9802c57 AL |
453 | ret = devm_snd_soc_register_component(&spi->dev, |
454 | &rt5514_spi_dai_component, | |
455 | &rt5514_spi_dai, 1); | |
6eebf35b OC |
456 | if (ret < 0) { |
457 | dev_err(&spi->dev, "Failed to register component.\n"); | |
e9802c57 | 458 | return ret; |
6eebf35b OC |
459 | } |
460 | ||
58f1c07d | 461 | return 0; |
462 | } | |
463 | ||
7e6358ec | 464 | static int __maybe_unused rt5514_suspend(struct device *dev) |
58f1c07d | 465 | { |
466 | int irq = to_spi_device(dev)->irq; | |
467 | ||
468 | if (device_may_wakeup(dev)) | |
469 | enable_irq_wake(irq); | |
470 | ||
6eebf35b OC |
471 | return 0; |
472 | } | |
473 | ||
7e6358ec | 474 | static int __maybe_unused rt5514_resume(struct device *dev) |
58f1c07d | 475 | { |
e9c50aa6 | 476 | struct snd_soc_platform *platform = snd_soc_lookup_platform(dev); |
477 | struct rt5514_dsp *rt5514_dsp = | |
478 | snd_soc_platform_get_drvdata(platform); | |
58f1c07d | 479 | int irq = to_spi_device(dev)->irq; |
e9c50aa6 | 480 | u8 buf[8]; |
58f1c07d | 481 | |
482 | if (device_may_wakeup(dev)) | |
483 | disable_irq_wake(irq); | |
484 | ||
346cccf8 | 485 | if (rt5514_dsp) { |
486 | if (rt5514_dsp->substream) { | |
487 | rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, | |
488 | sizeof(buf)); | |
489 | if (buf[0] & RT5514_IRQ_STATUS_BIT) | |
490 | rt5514_schedule_copy(rt5514_dsp); | |
491 | } | |
e9c50aa6 | 492 | } |
493 | ||
58f1c07d | 494 | return 0; |
495 | } | |
496 | ||
497 | static const struct dev_pm_ops rt5514_pm_ops = { | |
498 | SET_SYSTEM_SLEEP_PM_OPS(rt5514_suspend, rt5514_resume) | |
499 | }; | |
500 | ||
6eebf35b OC |
501 | static const struct of_device_id rt5514_of_match[] = { |
502 | { .compatible = "realtek,rt5514", }, | |
503 | {}, | |
504 | }; | |
505 | MODULE_DEVICE_TABLE(of, rt5514_of_match); | |
506 | ||
507 | static struct spi_driver rt5514_spi_driver = { | |
508 | .driver = { | |
509 | .name = "rt5514", | |
58f1c07d | 510 | .pm = &rt5514_pm_ops, |
6eebf35b OC |
511 | .of_match_table = of_match_ptr(rt5514_of_match), |
512 | }, | |
513 | .probe = rt5514_spi_probe, | |
6eebf35b OC |
514 | }; |
515 | module_spi_driver(rt5514_spi_driver); | |
516 | ||
517 | MODULE_DESCRIPTION("RT5514 SPI driver"); | |
518 | MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>"); | |
519 | MODULE_LICENSE("GPL v2"); |