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fdfc0d8a PP |
1 | /* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved. |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License version 2 and | |
5 | * only version 2 as published by the Free Software Foundation. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | */ | |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/device.h> | |
18 | #include <linux/io.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/fs.h> | |
21 | #include <linux/miscdevice.h> | |
22 | #include <linux/uaccess.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/spinlock.h> | |
1b19f59d | 25 | #include <linux/pm_runtime.h> |
fdfc0d8a PP |
26 | #include <linux/seq_file.h> |
27 | #include <linux/coresight.h> | |
28 | #include <linux/amba/bus.h> | |
267b2c23 | 29 | #include <linux/clk.h> |
fdfc0d8a PP |
30 | |
31 | #include "coresight-priv.h" | |
32 | ||
33 | #define ETB_RAM_DEPTH_REG 0x004 | |
34 | #define ETB_STATUS_REG 0x00c | |
35 | #define ETB_RAM_READ_DATA_REG 0x010 | |
36 | #define ETB_RAM_READ_POINTER 0x014 | |
37 | #define ETB_RAM_WRITE_POINTER 0x018 | |
38 | #define ETB_TRG 0x01c | |
39 | #define ETB_CTL_REG 0x020 | |
40 | #define ETB_RWD_REG 0x024 | |
41 | #define ETB_FFSR 0x300 | |
42 | #define ETB_FFCR 0x304 | |
43 | #define ETB_ITMISCOP0 0xee0 | |
44 | #define ETB_ITTRFLINACK 0xee4 | |
45 | #define ETB_ITTRFLIN 0xee8 | |
46 | #define ETB_ITATBDATA0 0xeeC | |
47 | #define ETB_ITATBCTR2 0xef0 | |
48 | #define ETB_ITATBCTR1 0xef4 | |
49 | #define ETB_ITATBCTR0 0xef8 | |
50 | ||
51 | /* register description */ | |
52 | /* STS - 0x00C */ | |
53 | #define ETB_STATUS_RAM_FULL BIT(0) | |
54 | /* CTL - 0x020 */ | |
55 | #define ETB_CTL_CAPT_EN BIT(0) | |
56 | /* FFCR - 0x304 */ | |
57 | #define ETB_FFCR_EN_FTC BIT(0) | |
58 | #define ETB_FFCR_FON_MAN BIT(6) | |
59 | #define ETB_FFCR_STOP_FI BIT(12) | |
60 | #define ETB_FFCR_STOP_TRIGGER BIT(13) | |
61 | ||
62 | #define ETB_FFCR_BIT 6 | |
63 | #define ETB_FFSR_BIT 1 | |
64 | #define ETB_FRAME_SIZE_WORDS 4 | |
65 | ||
66 | /** | |
67 | * struct etb_drvdata - specifics associated to an ETB component | |
68 | * @base: memory mapped base address for this component. | |
69 | * @dev: the device entity associated to this component. | |
267b2c23 | 70 | * @atclk: optional clock for the core parts of the ETB. |
fdfc0d8a PP |
71 | * @csdev: component vitals needed by the framework. |
72 | * @miscdev: specifics to handle "/dev/xyz.etb" entry. | |
fdfc0d8a PP |
73 | * @spinlock: only one at a time pls. |
74 | * @in_use: synchronise user space access to etb buffer. | |
75 | * @buf: area of memory where ETB buffer content gets sent. | |
76 | * @buffer_depth: size of @buf. | |
77 | * @enable: this ETB is being used. | |
78 | * @trigger_cntr: amount of words to store after a trigger. | |
79 | */ | |
80 | struct etb_drvdata { | |
81 | void __iomem *base; | |
82 | struct device *dev; | |
267b2c23 | 83 | struct clk *atclk; |
fdfc0d8a PP |
84 | struct coresight_device *csdev; |
85 | struct miscdevice miscdev; | |
fdfc0d8a PP |
86 | spinlock_t spinlock; |
87 | atomic_t in_use; | |
88 | u8 *buf; | |
89 | u32 buffer_depth; | |
90 | bool enable; | |
91 | u32 trigger_cntr; | |
92 | }; | |
93 | ||
94 | static unsigned int etb_get_buffer_depth(struct etb_drvdata *drvdata) | |
95 | { | |
fdfc0d8a PP |
96 | u32 depth = 0; |
97 | ||
1b19f59d | 98 | pm_runtime_get_sync(drvdata->dev); |
fdfc0d8a PP |
99 | |
100 | /* RO registers don't need locking */ | |
101 | depth = readl_relaxed(drvdata->base + ETB_RAM_DEPTH_REG); | |
102 | ||
1b19f59d | 103 | pm_runtime_put(drvdata->dev); |
fdfc0d8a PP |
104 | return depth; |
105 | } | |
106 | ||
107 | static void etb_enable_hw(struct etb_drvdata *drvdata) | |
108 | { | |
109 | int i; | |
110 | u32 depth; | |
111 | ||
112 | CS_UNLOCK(drvdata->base); | |
113 | ||
114 | depth = drvdata->buffer_depth; | |
115 | /* reset write RAM pointer address */ | |
116 | writel_relaxed(0x0, drvdata->base + ETB_RAM_WRITE_POINTER); | |
117 | /* clear entire RAM buffer */ | |
118 | for (i = 0; i < depth; i++) | |
119 | writel_relaxed(0x0, drvdata->base + ETB_RWD_REG); | |
120 | ||
121 | /* reset write RAM pointer address */ | |
122 | writel_relaxed(0x0, drvdata->base + ETB_RAM_WRITE_POINTER); | |
123 | /* reset read RAM pointer address */ | |
124 | writel_relaxed(0x0, drvdata->base + ETB_RAM_READ_POINTER); | |
125 | ||
126 | writel_relaxed(drvdata->trigger_cntr, drvdata->base + ETB_TRG); | |
127 | writel_relaxed(ETB_FFCR_EN_FTC | ETB_FFCR_STOP_TRIGGER, | |
128 | drvdata->base + ETB_FFCR); | |
129 | /* ETB trace capture enable */ | |
130 | writel_relaxed(ETB_CTL_CAPT_EN, drvdata->base + ETB_CTL_REG); | |
131 | ||
132 | CS_LOCK(drvdata->base); | |
133 | } | |
134 | ||
135 | static int etb_enable(struct coresight_device *csdev) | |
136 | { | |
137 | struct etb_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); | |
fdfc0d8a PP |
138 | unsigned long flags; |
139 | ||
fdfc0d8a PP |
140 | spin_lock_irqsave(&drvdata->spinlock, flags); |
141 | etb_enable_hw(drvdata); | |
142 | drvdata->enable = true; | |
143 | spin_unlock_irqrestore(&drvdata->spinlock, flags); | |
144 | ||
145 | dev_info(drvdata->dev, "ETB enabled\n"); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static void etb_disable_hw(struct etb_drvdata *drvdata) | |
150 | { | |
151 | u32 ffcr; | |
152 | ||
153 | CS_UNLOCK(drvdata->base); | |
154 | ||
155 | ffcr = readl_relaxed(drvdata->base + ETB_FFCR); | |
156 | /* stop formatter when a stop has completed */ | |
157 | ffcr |= ETB_FFCR_STOP_FI; | |
158 | writel_relaxed(ffcr, drvdata->base + ETB_FFCR); | |
159 | /* manually generate a flush of the system */ | |
160 | ffcr |= ETB_FFCR_FON_MAN; | |
161 | writel_relaxed(ffcr, drvdata->base + ETB_FFCR); | |
162 | ||
163 | if (coresight_timeout(drvdata->base, ETB_FFCR, ETB_FFCR_BIT, 0)) { | |
164 | dev_err(drvdata->dev, | |
165 | "timeout observed when probing at offset %#x\n", | |
166 | ETB_FFCR); | |
167 | } | |
168 | ||
169 | /* disable trace capture */ | |
170 | writel_relaxed(0x0, drvdata->base + ETB_CTL_REG); | |
171 | ||
172 | if (coresight_timeout(drvdata->base, ETB_FFSR, ETB_FFSR_BIT, 1)) { | |
173 | dev_err(drvdata->dev, | |
174 | "timeout observed when probing at offset %#x\n", | |
175 | ETB_FFCR); | |
176 | } | |
177 | ||
178 | CS_LOCK(drvdata->base); | |
179 | } | |
180 | ||
181 | static void etb_dump_hw(struct etb_drvdata *drvdata) | |
182 | { | |
183 | int i; | |
184 | u8 *buf_ptr; | |
185 | u32 read_data, depth; | |
186 | u32 read_ptr, write_ptr; | |
187 | u32 frame_off, frame_endoff; | |
188 | ||
189 | CS_UNLOCK(drvdata->base); | |
190 | ||
191 | read_ptr = readl_relaxed(drvdata->base + ETB_RAM_READ_POINTER); | |
192 | write_ptr = readl_relaxed(drvdata->base + ETB_RAM_WRITE_POINTER); | |
193 | ||
194 | frame_off = write_ptr % ETB_FRAME_SIZE_WORDS; | |
195 | frame_endoff = ETB_FRAME_SIZE_WORDS - frame_off; | |
196 | if (frame_off) { | |
197 | dev_err(drvdata->dev, | |
198 | "write_ptr: %lu not aligned to formatter frame size\n", | |
199 | (unsigned long)write_ptr); | |
200 | dev_err(drvdata->dev, "frameoff: %lu, frame_endoff: %lu\n", | |
201 | (unsigned long)frame_off, (unsigned long)frame_endoff); | |
202 | write_ptr += frame_endoff; | |
203 | } | |
204 | ||
205 | if ((readl_relaxed(drvdata->base + ETB_STATUS_REG) | |
206 | & ETB_STATUS_RAM_FULL) == 0) | |
207 | writel_relaxed(0x0, drvdata->base + ETB_RAM_READ_POINTER); | |
208 | else | |
209 | writel_relaxed(write_ptr, drvdata->base + ETB_RAM_READ_POINTER); | |
210 | ||
211 | depth = drvdata->buffer_depth; | |
212 | buf_ptr = drvdata->buf; | |
213 | for (i = 0; i < depth; i++) { | |
214 | read_data = readl_relaxed(drvdata->base + | |
215 | ETB_RAM_READ_DATA_REG); | |
216 | *buf_ptr++ = read_data >> 0; | |
217 | *buf_ptr++ = read_data >> 8; | |
218 | *buf_ptr++ = read_data >> 16; | |
219 | *buf_ptr++ = read_data >> 24; | |
220 | } | |
221 | ||
222 | if (frame_off) { | |
223 | buf_ptr -= (frame_endoff * 4); | |
224 | for (i = 0; i < frame_endoff; i++) { | |
225 | *buf_ptr++ = 0x0; | |
226 | *buf_ptr++ = 0x0; | |
227 | *buf_ptr++ = 0x0; | |
228 | *buf_ptr++ = 0x0; | |
229 | } | |
230 | } | |
231 | ||
232 | writel_relaxed(read_ptr, drvdata->base + ETB_RAM_READ_POINTER); | |
233 | ||
234 | CS_LOCK(drvdata->base); | |
235 | } | |
236 | ||
237 | static void etb_disable(struct coresight_device *csdev) | |
238 | { | |
239 | struct etb_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); | |
240 | unsigned long flags; | |
241 | ||
242 | spin_lock_irqsave(&drvdata->spinlock, flags); | |
243 | etb_disable_hw(drvdata); | |
244 | etb_dump_hw(drvdata); | |
245 | drvdata->enable = false; | |
246 | spin_unlock_irqrestore(&drvdata->spinlock, flags); | |
247 | ||
fdfc0d8a PP |
248 | dev_info(drvdata->dev, "ETB disabled\n"); |
249 | } | |
250 | ||
251 | static const struct coresight_ops_sink etb_sink_ops = { | |
252 | .enable = etb_enable, | |
253 | .disable = etb_disable, | |
254 | }; | |
255 | ||
256 | static const struct coresight_ops etb_cs_ops = { | |
257 | .sink_ops = &etb_sink_ops, | |
258 | }; | |
259 | ||
260 | static void etb_dump(struct etb_drvdata *drvdata) | |
261 | { | |
262 | unsigned long flags; | |
263 | ||
264 | spin_lock_irqsave(&drvdata->spinlock, flags); | |
265 | if (drvdata->enable) { | |
266 | etb_disable_hw(drvdata); | |
267 | etb_dump_hw(drvdata); | |
268 | etb_enable_hw(drvdata); | |
269 | } | |
270 | spin_unlock_irqrestore(&drvdata->spinlock, flags); | |
271 | ||
272 | dev_info(drvdata->dev, "ETB dumped\n"); | |
273 | } | |
274 | ||
275 | static int etb_open(struct inode *inode, struct file *file) | |
276 | { | |
277 | struct etb_drvdata *drvdata = container_of(file->private_data, | |
278 | struct etb_drvdata, miscdev); | |
279 | ||
280 | if (atomic_cmpxchg(&drvdata->in_use, 0, 1)) | |
281 | return -EBUSY; | |
282 | ||
283 | dev_dbg(drvdata->dev, "%s: successfully opened\n", __func__); | |
284 | return 0; | |
285 | } | |
286 | ||
287 | static ssize_t etb_read(struct file *file, char __user *data, | |
288 | size_t len, loff_t *ppos) | |
289 | { | |
290 | u32 depth; | |
291 | struct etb_drvdata *drvdata = container_of(file->private_data, | |
292 | struct etb_drvdata, miscdev); | |
293 | ||
294 | etb_dump(drvdata); | |
295 | ||
296 | depth = drvdata->buffer_depth; | |
297 | if (*ppos + len > depth * 4) | |
298 | len = depth * 4 - *ppos; | |
299 | ||
300 | if (copy_to_user(data, drvdata->buf + *ppos, len)) { | |
301 | dev_dbg(drvdata->dev, "%s: copy_to_user failed\n", __func__); | |
302 | return -EFAULT; | |
303 | } | |
304 | ||
305 | *ppos += len; | |
306 | ||
72f641fe MP |
307 | dev_dbg(drvdata->dev, "%s: %zu bytes copied, %d bytes left\n", |
308 | __func__, len, (int)(depth * 4 - *ppos)); | |
fdfc0d8a PP |
309 | return len; |
310 | } | |
311 | ||
312 | static int etb_release(struct inode *inode, struct file *file) | |
313 | { | |
314 | struct etb_drvdata *drvdata = container_of(file->private_data, | |
315 | struct etb_drvdata, miscdev); | |
316 | atomic_set(&drvdata->in_use, 0); | |
317 | ||
318 | dev_dbg(drvdata->dev, "%s: released\n", __func__); | |
319 | return 0; | |
320 | } | |
321 | ||
322 | static const struct file_operations etb_fops = { | |
323 | .owner = THIS_MODULE, | |
324 | .open = etb_open, | |
325 | .read = etb_read, | |
326 | .release = etb_release, | |
327 | .llseek = no_llseek, | |
328 | }; | |
329 | ||
330 | static ssize_t status_show(struct device *dev, | |
331 | struct device_attribute *attr, char *buf) | |
332 | { | |
fdfc0d8a PP |
333 | unsigned long flags; |
334 | u32 etb_rdr, etb_sr, etb_rrp, etb_rwp; | |
335 | u32 etb_trg, etb_cr, etb_ffsr, etb_ffcr; | |
336 | struct etb_drvdata *drvdata = dev_get_drvdata(dev->parent); | |
337 | ||
1b19f59d | 338 | pm_runtime_get_sync(drvdata->dev); |
fdfc0d8a PP |
339 | spin_lock_irqsave(&drvdata->spinlock, flags); |
340 | CS_UNLOCK(drvdata->base); | |
341 | ||
342 | etb_rdr = readl_relaxed(drvdata->base + ETB_RAM_DEPTH_REG); | |
343 | etb_sr = readl_relaxed(drvdata->base + ETB_STATUS_REG); | |
344 | etb_rrp = readl_relaxed(drvdata->base + ETB_RAM_READ_POINTER); | |
345 | etb_rwp = readl_relaxed(drvdata->base + ETB_RAM_WRITE_POINTER); | |
346 | etb_trg = readl_relaxed(drvdata->base + ETB_TRG); | |
347 | etb_cr = readl_relaxed(drvdata->base + ETB_CTL_REG); | |
348 | etb_ffsr = readl_relaxed(drvdata->base + ETB_FFSR); | |
349 | etb_ffcr = readl_relaxed(drvdata->base + ETB_FFCR); | |
350 | ||
351 | CS_LOCK(drvdata->base); | |
352 | spin_unlock_irqrestore(&drvdata->spinlock, flags); | |
353 | ||
1b19f59d | 354 | pm_runtime_put(drvdata->dev); |
fdfc0d8a PP |
355 | |
356 | return sprintf(buf, | |
357 | "Depth:\t\t0x%x\n" | |
358 | "Status:\t\t0x%x\n" | |
359 | "RAM read ptr:\t0x%x\n" | |
360 | "RAM wrt ptr:\t0x%x\n" | |
361 | "Trigger cnt:\t0x%x\n" | |
362 | "Control:\t0x%x\n" | |
363 | "Flush status:\t0x%x\n" | |
364 | "Flush ctrl:\t0x%x\n", | |
365 | etb_rdr, etb_sr, etb_rrp, etb_rwp, | |
366 | etb_trg, etb_cr, etb_ffsr, etb_ffcr); | |
1b19f59d | 367 | |
fdfc0d8a PP |
368 | return -EINVAL; |
369 | } | |
370 | static DEVICE_ATTR_RO(status); | |
371 | ||
372 | static ssize_t trigger_cntr_show(struct device *dev, | |
373 | struct device_attribute *attr, char *buf) | |
374 | { | |
375 | struct etb_drvdata *drvdata = dev_get_drvdata(dev->parent); | |
376 | unsigned long val = drvdata->trigger_cntr; | |
377 | ||
378 | return sprintf(buf, "%#lx\n", val); | |
379 | } | |
380 | ||
381 | static ssize_t trigger_cntr_store(struct device *dev, | |
382 | struct device_attribute *attr, | |
383 | const char *buf, size_t size) | |
384 | { | |
385 | int ret; | |
386 | unsigned long val; | |
387 | struct etb_drvdata *drvdata = dev_get_drvdata(dev->parent); | |
388 | ||
389 | ret = kstrtoul(buf, 16, &val); | |
390 | if (ret) | |
391 | return ret; | |
392 | ||
393 | drvdata->trigger_cntr = val; | |
394 | return size; | |
395 | } | |
396 | static DEVICE_ATTR_RW(trigger_cntr); | |
397 | ||
398 | static struct attribute *coresight_etb_attrs[] = { | |
399 | &dev_attr_trigger_cntr.attr, | |
400 | &dev_attr_status.attr, | |
401 | NULL, | |
402 | }; | |
403 | ATTRIBUTE_GROUPS(coresight_etb); | |
404 | ||
405 | static int etb_probe(struct amba_device *adev, const struct amba_id *id) | |
406 | { | |
407 | int ret; | |
408 | void __iomem *base; | |
409 | struct device *dev = &adev->dev; | |
410 | struct coresight_platform_data *pdata = NULL; | |
411 | struct etb_drvdata *drvdata; | |
412 | struct resource *res = &adev->res; | |
413 | struct coresight_desc *desc; | |
414 | struct device_node *np = adev->dev.of_node; | |
415 | ||
416 | if (np) { | |
417 | pdata = of_get_coresight_platform_data(dev, np); | |
418 | if (IS_ERR(pdata)) | |
419 | return PTR_ERR(pdata); | |
420 | adev->dev.platform_data = pdata; | |
421 | } | |
422 | ||
423 | drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); | |
424 | if (!drvdata) | |
425 | return -ENOMEM; | |
426 | ||
427 | drvdata->dev = &adev->dev; | |
267b2c23 LW |
428 | drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */ |
429 | if (!IS_ERR(drvdata->atclk)) { | |
430 | ret = clk_prepare_enable(drvdata->atclk); | |
431 | if (ret) | |
432 | return ret; | |
433 | } | |
fdfc0d8a PP |
434 | dev_set_drvdata(dev, drvdata); |
435 | ||
436 | /* validity for the resource is already checked by the AMBA core */ | |
437 | base = devm_ioremap_resource(dev, res); | |
438 | if (IS_ERR(base)) | |
439 | return PTR_ERR(base); | |
440 | ||
441 | drvdata->base = base; | |
442 | ||
443 | spin_lock_init(&drvdata->spinlock); | |
444 | ||
d786a47d | 445 | drvdata->buffer_depth = etb_get_buffer_depth(drvdata); |
1b19f59d | 446 | pm_runtime_put(&adev->dev); |
fdfc0d8a | 447 | |
f5da7cb2 | 448 | if (drvdata->buffer_depth & 0x80000000) |
fdfc0d8a PP |
449 | return -EINVAL; |
450 | ||
451 | drvdata->buf = devm_kzalloc(dev, | |
452 | drvdata->buffer_depth * 4, GFP_KERNEL); | |
cc545449 MB |
453 | if (!drvdata->buf) { |
454 | dev_err(dev, "Failed to allocate %u bytes for buffer data\n", | |
455 | drvdata->buffer_depth * 4); | |
fdfc0d8a | 456 | return -ENOMEM; |
cc545449 | 457 | } |
fdfc0d8a PP |
458 | |
459 | desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); | |
460 | if (!desc) | |
461 | return -ENOMEM; | |
462 | ||
463 | desc->type = CORESIGHT_DEV_TYPE_SINK; | |
464 | desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; | |
465 | desc->ops = &etb_cs_ops; | |
466 | desc->pdata = pdata; | |
467 | desc->dev = dev; | |
468 | desc->groups = coresight_etb_groups; | |
469 | drvdata->csdev = coresight_register(desc); | |
470 | if (IS_ERR(drvdata->csdev)) | |
471 | return PTR_ERR(drvdata->csdev); | |
472 | ||
473 | drvdata->miscdev.name = pdata->name; | |
474 | drvdata->miscdev.minor = MISC_DYNAMIC_MINOR; | |
475 | drvdata->miscdev.fops = &etb_fops; | |
476 | ret = misc_register(&drvdata->miscdev); | |
477 | if (ret) | |
478 | goto err_misc_register; | |
479 | ||
480 | dev_info(dev, "ETB initialized\n"); | |
481 | return 0; | |
482 | ||
483 | err_misc_register: | |
484 | coresight_unregister(drvdata->csdev); | |
485 | return ret; | |
486 | } | |
487 | ||
267b2c23 LW |
488 | #ifdef CONFIG_PM |
489 | static int etb_runtime_suspend(struct device *dev) | |
490 | { | |
491 | struct etb_drvdata *drvdata = dev_get_drvdata(dev); | |
492 | ||
493 | if (drvdata && !IS_ERR(drvdata->atclk)) | |
494 | clk_disable_unprepare(drvdata->atclk); | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | static int etb_runtime_resume(struct device *dev) | |
500 | { | |
501 | struct etb_drvdata *drvdata = dev_get_drvdata(dev); | |
502 | ||
503 | if (drvdata && !IS_ERR(drvdata->atclk)) | |
504 | clk_prepare_enable(drvdata->atclk); | |
505 | ||
506 | return 0; | |
507 | } | |
508 | #endif | |
509 | ||
510 | static const struct dev_pm_ops etb_dev_pm_ops = { | |
511 | SET_RUNTIME_PM_OPS(etb_runtime_suspend, etb_runtime_resume, NULL) | |
512 | }; | |
513 | ||
fdfc0d8a PP |
514 | static struct amba_id etb_ids[] = { |
515 | { | |
516 | .id = 0x0003b907, | |
517 | .mask = 0x0003ffff, | |
518 | }, | |
519 | { 0, 0}, | |
520 | }; | |
521 | ||
522 | static struct amba_driver etb_driver = { | |
523 | .drv = { | |
524 | .name = "coresight-etb10", | |
525 | .owner = THIS_MODULE, | |
267b2c23 | 526 | .pm = &etb_dev_pm_ops, |
b15f0fb6 | 527 | .suppress_bind_attrs = true, |
267b2c23 | 528 | |
fdfc0d8a PP |
529 | }, |
530 | .probe = etb_probe, | |
fdfc0d8a PP |
531 | .id_table = etb_ids, |
532 | }; | |
533 | ||
52d6bbb9 | 534 | module_amba_driver(etb_driver); |
fdfc0d8a PP |
535 | |
536 | MODULE_LICENSE("GPL v2"); | |
537 | MODULE_DESCRIPTION("CoreSight Embedded Trace Buffer driver"); |