Rama Aparna Mallavarapu | a2a8e3e | 2017-08-16 20:56:00 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2017, 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/device.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/io.h> |
| 19 | #include <linux/err.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/mutex.h> |
| 22 | #include <linux/amba/bus.h> |
| 23 | #include <linux/topology.h> |
| 24 | #include <linux/of.h> |
| 25 | #include <linux/coresight.h> |
| 26 | |
| 27 | #include "coresight-priv.h" |
| 28 | |
| 29 | #define tgu_writel(drvdata, val, off) __raw_writel((val), drvdata->base + off) |
| 30 | #define tgu_readl(drvdata, off) __raw_readl(drvdata->base + off) |
| 31 | |
| 32 | #define TGU_LOCK(drvdata) \ |
| 33 | do { \ |
| 34 | mb(); /* ensure configuration take effect before we lock it */ \ |
| 35 | tgu_writel(drvdata, 0x0, CORESIGHT_LAR); \ |
| 36 | } while (0) |
| 37 | #define TGU_UNLOCK(drvdata) \ |
| 38 | do { \ |
| 39 | tgu_writel(drvdata, CORESIGHT_UNLOCK, CORESIGHT_LAR); \ |
| 40 | mb(); /* ensure unlock take effect before we configure */ \ |
| 41 | } while (0) |
| 42 | |
| 43 | #define TGU_CONTROL 0x0000 |
| 44 | #define TIMER0_STATUS 0x0004 |
| 45 | #define COUNTER0_STATUS 0x000C |
| 46 | #define TGU_STATUS 0x0014 |
| 47 | #define TIMER0_COMPARE_STEP(n) (0x0040 + 0x1D8 * n) |
| 48 | #define COUNTER0_COMPARE_STEP(n) (0x0048 + 0x1D8 * n) |
| 49 | #define GROUP_REG_STEP(grp, reg, step) (0x0074 + 0x60 * grp + 0x4 * reg + \ |
| 50 | 0x1D8 * step) |
| 51 | #define CONDITION_DECODE_STEP(m, n) (0x0050 + 0x4 * m + 0x1D8 * n) |
| 52 | #define CONDITION_SELECT_STEP(m, n) (0x0060 + 0x4 * m + 0x1D8 * n) |
| 53 | #define GROUP0 0x0074 |
| 54 | #define GROUP1 0x00D4 |
| 55 | #define GROUP2 0x0134 |
| 56 | #define GROUP3 0x0194 |
| 57 | #define TGU_LAR 0x0FB0 |
| 58 | |
| 59 | #define MAX_GROUP_SETS 256 |
| 60 | #define MAX_GROUPS 4 |
| 61 | #define MAX_CONDITION_SETS 64 |
| 62 | #define MAX_TIMER_COUNTER_SETS 8 |
| 63 | |
| 64 | #define to_tgu_drvdata(c) container_of(c, struct tgu_drvdata, tgu) |
| 65 | |
| 66 | struct Trigger_group_data { |
| 67 | unsigned long grpaddr; |
| 68 | unsigned long value; |
| 69 | }; |
| 70 | |
| 71 | struct Trigger_condition_data { |
| 72 | unsigned long condaddr; |
| 73 | unsigned long value; |
| 74 | }; |
| 75 | |
| 76 | struct Trigger_select_data { |
| 77 | unsigned long selectaddr; |
| 78 | unsigned long value; |
| 79 | }; |
| 80 | |
| 81 | struct Trigger_timer_data { |
| 82 | unsigned long timeraddr; |
| 83 | unsigned long value; |
| 84 | }; |
| 85 | |
| 86 | struct Trigger_counter_data { |
| 87 | unsigned long counteraddr; |
| 88 | unsigned long value; |
| 89 | }; |
| 90 | struct tgu_drvdata { |
| 91 | void __iomem *base; |
| 92 | struct device *dev; |
| 93 | struct coresight_device *csdev; |
| 94 | struct clk *clk; |
| 95 | spinlock_t spinlock; |
| 96 | int max_steps; |
| 97 | int max_conditions; |
| 98 | int max_regs; |
| 99 | int max_timer_counter; |
| 100 | struct Trigger_group_data *grp_data; |
| 101 | struct Trigger_condition_data *condition_data; |
| 102 | struct Trigger_select_data *select_data; |
| 103 | struct Trigger_timer_data *timer_data; |
| 104 | struct Trigger_counter_data *counter_data; |
| 105 | int grp_refcnt; |
| 106 | int cond_refcnt; |
| 107 | int select_refcnt; |
| 108 | int timer_refcnt; |
| 109 | int counter_refcnt; |
| 110 | bool enable; |
| 111 | }; |
| 112 | |
| 113 | static ssize_t enable_tgu(struct device *dev, |
| 114 | struct device_attribute *attr, |
| 115 | const char *buf, size_t size) |
| 116 | { |
| 117 | unsigned long value; |
| 118 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 119 | int ret, i, j; |
| 120 | |
| 121 | if (kstrtoul(buf, 16, &value)) |
| 122 | return -EINVAL; |
| 123 | |
| 124 | /* Enable clock */ |
| 125 | ret = pm_runtime_get_sync(drvdata->dev); |
| 126 | if (ret) |
| 127 | return ret; |
| 128 | |
| 129 | spin_lock(&drvdata->spinlock); |
| 130 | /* Unlock the TGU LAR */ |
| 131 | TGU_UNLOCK(drvdata); |
| 132 | |
| 133 | if (value) { |
| 134 | |
| 135 | /* Disable TGU to program the triggers */ |
| 136 | tgu_writel(drvdata, 0, TGU_CONTROL); |
| 137 | |
| 138 | /* program the TGU Group data for the desired use case*/ |
| 139 | |
| 140 | for (i = 0; i <= drvdata->grp_refcnt; i++) |
| 141 | tgu_writel(drvdata, drvdata->grp_data[i].value, |
| 142 | drvdata->grp_data[i].grpaddr); |
| 143 | |
| 144 | /* program the unused Condition Decode registers NOT bits to 1*/ |
| 145 | for (i = 0; i <= drvdata->max_conditions; i++) { |
| 146 | for (j = 0; j <= drvdata->max_steps; j++) |
| 147 | tgu_writel(drvdata, 0x1000000, |
| 148 | CONDITION_DECODE_STEP(i, j)); |
| 149 | } |
| 150 | /* program the TGU Condition Decode for the desired use case*/ |
| 151 | for (i = 0; i <= drvdata->cond_refcnt; i++) |
| 152 | tgu_writel(drvdata, drvdata->condition_data[i].value, |
| 153 | drvdata->condition_data[i].condaddr); |
| 154 | |
| 155 | /* program the TGU Condition Select for the desired use case*/ |
| 156 | for (i = 0; i <= drvdata->select_refcnt; i++) |
| 157 | tgu_writel(drvdata, drvdata->select_data[i].value, |
| 158 | drvdata->select_data[i].selectaddr); |
| 159 | |
| 160 | /* Timer and Counter Check */ |
| 161 | for (i = 0; i <= drvdata->timer_refcnt; i++) |
| 162 | tgu_writel(drvdata, drvdata->timer_data[i].value, |
| 163 | drvdata->timer_data[i].timeraddr); |
| 164 | |
| 165 | for (i = 0; i <= drvdata->counter_refcnt; i++) |
| 166 | tgu_writel(drvdata, drvdata->counter_data[i].value, |
| 167 | drvdata->counter_data[i].counteraddr); |
| 168 | |
| 169 | /* Enable TGU to program the triggers */ |
| 170 | tgu_writel(drvdata, 1, TGU_CONTROL); |
| 171 | |
| 172 | drvdata->enable = true; |
| 173 | dev_dbg(dev, "Coresight-TGU enabled\n"); |
| 174 | |
| 175 | } else { |
| 176 | /* Disable TGU to program the triggers */ |
| 177 | tgu_writel(drvdata, 0, TGU_CONTROL); |
| 178 | TGU_LOCK(drvdata); |
| 179 | spin_unlock(&drvdata->spinlock); |
| 180 | |
| 181 | pm_runtime_put(drvdata->dev); |
| 182 | dev_dbg(dev, "Coresight-TGU disabled\n"); |
| 183 | } |
| 184 | |
| 185 | TGU_LOCK(drvdata); |
| 186 | spin_unlock(&drvdata->spinlock); |
| 187 | return size; |
| 188 | } |
| 189 | static DEVICE_ATTR(enable_tgu, 0200, NULL, enable_tgu); |
| 190 | |
| 191 | static ssize_t reset_tgu(struct device *dev, |
| 192 | struct device_attribute *attr, |
| 193 | const char *buf, size_t size) |
| 194 | { |
| 195 | unsigned long value; |
| 196 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 197 | int ret; |
| 198 | |
| 199 | if (kstrtoul(buf, 16, &value)) |
| 200 | return -EINVAL; |
| 201 | |
| 202 | if (!drvdata->enable) { |
| 203 | /* Enable clock */ |
| 204 | ret = pm_runtime_get_sync(drvdata->dev); |
| 205 | if (ret) |
| 206 | return ret; |
| 207 | } |
| 208 | |
| 209 | spin_lock(&drvdata->spinlock); |
| 210 | /* Unlock the TGU LAR */ |
| 211 | TGU_UNLOCK(drvdata); |
| 212 | |
| 213 | if (value) { |
| 214 | /* Disable TGU to program the triggers */ |
| 215 | tgu_writel(drvdata, 0, TGU_CONTROL); |
| 216 | |
| 217 | /* Reset the Reference counters*/ |
| 218 | drvdata->grp_refcnt = 0; |
| 219 | drvdata->cond_refcnt = 0; |
| 220 | drvdata->select_refcnt = 0; |
| 221 | drvdata->timer_refcnt = 0; |
| 222 | drvdata->counter_refcnt = 0; |
| 223 | |
| 224 | dev_dbg(dev, "Coresight-TGU disabled\n"); |
| 225 | } else |
| 226 | dev_dbg(dev, "Invalid input to reset the TGU\n"); |
| 227 | |
| 228 | TGU_LOCK(drvdata); |
| 229 | spin_unlock(&drvdata->spinlock); |
| 230 | pm_runtime_put(drvdata->dev); |
| 231 | return size; |
| 232 | } |
| 233 | static DEVICE_ATTR(reset_tgu, 0200, NULL, reset_tgu); |
| 234 | |
| 235 | static ssize_t set_group(struct device *dev, struct device_attribute *attr, |
| 236 | const char *buf, size_t size) |
| 237 | { |
| 238 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 239 | int grp, reg, step; |
| 240 | unsigned long value; |
| 241 | |
| 242 | if (drvdata->grp_refcnt >= MAX_GROUP_SETS) { |
| 243 | dev_err(drvdata->dev, " Too many groups are being configured"); |
| 244 | return -EINVAL; |
| 245 | } |
| 246 | |
| 247 | if (sscanf(buf, "%d %d %d %lx", &grp, ®, &step, &value) != 4) |
| 248 | return -EINVAL; |
| 249 | |
| 250 | spin_lock(&drvdata->spinlock); |
| 251 | if ((grp <= MAX_GROUPS) && (reg <= drvdata->max_regs)) { |
| 252 | drvdata->grp_data[drvdata->grp_refcnt].grpaddr = |
| 253 | GROUP_REG_STEP(grp, reg, step); |
| 254 | drvdata->grp_data[drvdata->grp_refcnt].value = value; |
| 255 | drvdata->grp_refcnt++; |
| 256 | } else |
| 257 | dev_err(drvdata->dev, "Invalid group data\n"); |
| 258 | |
| 259 | spin_unlock(&drvdata->spinlock); |
| 260 | |
| 261 | return size; |
| 262 | } |
| 263 | static DEVICE_ATTR(set_group, 0200, NULL, set_group); |
| 264 | |
| 265 | static ssize_t tgu_set_condition(struct device *dev, struct device_attribute |
| 266 | *attr, const char *buf, size_t size) |
| 267 | { |
| 268 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 269 | unsigned long value; |
| 270 | int cond, step; |
| 271 | |
| 272 | if (drvdata->cond_refcnt >= MAX_CONDITION_SETS) { |
| 273 | dev_err(drvdata->dev, " Too many groups are being configured"); |
| 274 | return -EINVAL; |
| 275 | } |
| 276 | |
| 277 | if (sscanf(buf, "%d %d %lx", &cond, &step, &value) != 3) |
| 278 | return -EINVAL; |
| 279 | |
| 280 | spin_lock(&drvdata->spinlock); |
| 281 | if ((cond <= drvdata->max_conditions) && (step <= |
| 282 | drvdata->max_steps)) { |
| 283 | drvdata->condition_data[drvdata->cond_refcnt].condaddr = |
| 284 | CONDITION_DECODE_STEP(cond, step); |
| 285 | drvdata->condition_data[drvdata->cond_refcnt].value = value; |
| 286 | drvdata->cond_refcnt++; |
| 287 | } else |
| 288 | dev_err(drvdata->dev, "Invalid condition decode data\n"); |
| 289 | |
| 290 | spin_unlock(&drvdata->spinlock); |
| 291 | |
| 292 | return size; |
| 293 | } |
| 294 | static DEVICE_ATTR(set_condition, 0200, NULL, tgu_set_condition); |
| 295 | |
| 296 | static ssize_t tgu_set_select(struct device *dev, struct device_attribute *attr, |
| 297 | const char *buf, size_t size) |
| 298 | { |
| 299 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 300 | unsigned long value; |
| 301 | int select, step; |
| 302 | |
| 303 | if (drvdata->select_refcnt >= MAX_CONDITION_SETS) { |
| 304 | dev_err(drvdata->dev, " Too many groups are being configured"); |
| 305 | return -EINVAL; |
| 306 | } |
| 307 | |
| 308 | if (sscanf(buf, "%d %d %lx", &select, &step, &value) != 3) |
| 309 | return -EINVAL; |
| 310 | |
| 311 | spin_lock(&drvdata->spinlock); |
| 312 | |
| 313 | if ((select <= drvdata->max_conditions) && (step <= |
| 314 | drvdata->max_steps)) { |
| 315 | drvdata->select_data[drvdata->select_refcnt].selectaddr = |
| 316 | CONDITION_SELECT_STEP(select, step); |
| 317 | drvdata->select_data[drvdata->select_refcnt].value = value; |
| 318 | drvdata->select_refcnt++; |
| 319 | } else |
| 320 | dev_err(drvdata->dev, "Invalid select decode data\n"); |
| 321 | |
| 322 | spin_unlock(&drvdata->spinlock); |
| 323 | |
| 324 | return size; |
| 325 | } |
| 326 | static DEVICE_ATTR(set_select, 0200, NULL, tgu_set_select); |
| 327 | |
| 328 | static ssize_t tgu_set_timers(struct device *dev, struct device_attribute *attr, |
| 329 | const char *buf, size_t size) |
| 330 | { |
| 331 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 332 | unsigned long value; |
| 333 | int step; |
| 334 | |
| 335 | if (drvdata->select_refcnt >= MAX_TIMER_COUNTER_SETS) { |
| 336 | dev_err(drvdata->dev, " Too many groups are being configured"); |
| 337 | return -EINVAL; |
| 338 | } |
| 339 | |
| 340 | if (sscanf(buf, "%d %lx", &step, &value) != 2) |
| 341 | return -EINVAL; |
| 342 | |
| 343 | spin_lock(&drvdata->spinlock); |
| 344 | if (step <= drvdata->max_timer_counter) { |
| 345 | drvdata->timer_data[drvdata->timer_refcnt].timeraddr = |
| 346 | TIMER0_COMPARE_STEP(step); |
| 347 | drvdata->timer_data[drvdata->timer_refcnt].value = value; |
| 348 | drvdata->timer_refcnt++; |
| 349 | } else |
| 350 | dev_err(drvdata->dev, "Invalid TGU timer data\n"); |
| 351 | |
| 352 | spin_unlock(&drvdata->spinlock); |
| 353 | |
| 354 | return size; |
| 355 | } |
| 356 | static DEVICE_ATTR(set_timer, 0200, NULL, tgu_set_timers); |
| 357 | |
| 358 | static ssize_t tgu_set_counters(struct device *dev, struct device_attribute |
| 359 | *attr, const char *buf, size_t size) |
| 360 | { |
| 361 | struct tgu_drvdata *drvdata = dev_get_drvdata(dev->parent); |
| 362 | unsigned long value; |
| 363 | int step; |
| 364 | |
| 365 | if (drvdata->counter_refcnt >= MAX_TIMER_COUNTER_SETS) { |
| 366 | dev_err(drvdata->dev, " Too many groups are being configured"); |
| 367 | return -EINVAL; |
| 368 | } |
| 369 | |
| 370 | if (sscanf(buf, "%d %lx", &step, &value) != 2) |
| 371 | return -EINVAL; |
| 372 | |
| 373 | spin_lock(&drvdata->spinlock); |
| 374 | if (step <= drvdata->max_timer_counter) { |
| 375 | drvdata->counter_data[drvdata->counter_refcnt].counteraddr = |
| 376 | COUNTER0_COMPARE_STEP(step); |
| 377 | drvdata->counter_data[drvdata->counter_refcnt].value = value; |
| 378 | drvdata->counter_refcnt++; |
| 379 | } else |
| 380 | dev_err(drvdata->dev, "Invalid TGU counter data\n"); |
| 381 | |
| 382 | spin_unlock(&drvdata->spinlock); |
| 383 | |
| 384 | return size; |
| 385 | } |
| 386 | static DEVICE_ATTR(set_counter, 0200, NULL, tgu_set_counters); |
| 387 | |
| 388 | static struct attribute *tgu_attrs[] = { |
| 389 | &dev_attr_enable_tgu.attr, |
| 390 | &dev_attr_reset_tgu.attr, |
| 391 | &dev_attr_set_group.attr, |
| 392 | &dev_attr_set_condition.attr, |
| 393 | &dev_attr_set_select.attr, |
| 394 | &dev_attr_set_timer.attr, |
| 395 | &dev_attr_set_counter.attr, |
| 396 | NULL, |
| 397 | }; |
| 398 | |
| 399 | static struct attribute_group tgu_attr_grp = { |
| 400 | .attrs = tgu_attrs, |
| 401 | }; |
| 402 | |
| 403 | static const struct attribute_group *tgu_attr_grps[] = { |
| 404 | &tgu_attr_grp, |
| 405 | NULL, |
| 406 | }; |
| 407 | |
| 408 | static int tgu_probe(struct amba_device *adev, const struct amba_id *id) |
| 409 | { |
| 410 | int ret = 0; |
| 411 | struct device *dev = &adev->dev; |
| 412 | struct coresight_platform_data *pdata; |
| 413 | struct tgu_drvdata *drvdata; |
| 414 | struct coresight_desc *desc; |
| 415 | |
| 416 | pdata = of_get_coresight_platform_data(dev, adev->dev.of_node); |
| 417 | if (IS_ERR(pdata)) |
| 418 | return PTR_ERR(pdata); |
| 419 | adev->dev.platform_data = pdata; |
| 420 | |
| 421 | drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); |
| 422 | if (!drvdata) |
| 423 | return -ENOMEM; |
| 424 | |
| 425 | drvdata->dev = &adev->dev; |
| 426 | |
| 427 | dev_set_drvdata(dev, drvdata); |
| 428 | |
| 429 | drvdata->base = devm_ioremap_resource(dev, &adev->res); |
| 430 | if (!drvdata->base) |
| 431 | return -ENOMEM; |
| 432 | |
| 433 | spin_lock_init(&drvdata->spinlock); |
| 434 | |
| 435 | ret = of_property_read_u32(adev->dev.of_node, "tgu-steps", |
| 436 | &drvdata->max_steps); |
| 437 | if (ret) |
| 438 | return -EINVAL; |
| 439 | |
| 440 | ret = of_property_read_u32(adev->dev.of_node, "tgu-conditions", |
| 441 | &drvdata->max_conditions); |
| 442 | if (ret) |
| 443 | return -EINVAL; |
| 444 | |
| 445 | ret = of_property_read_u32(adev->dev.of_node, "tgu-regs", |
| 446 | &drvdata->max_regs); |
| 447 | if (ret) |
| 448 | return -EINVAL; |
| 449 | |
| 450 | ret = of_property_read_u32(adev->dev.of_node, "tgu-timer-counters", |
| 451 | &drvdata->max_timer_counter); |
| 452 | if (ret) |
| 453 | return -EINVAL; |
| 454 | |
| 455 | /* Alloc memory for Grps, Conditions and Steps */ |
| 456 | drvdata->grp_data = devm_kzalloc(dev, MAX_GROUP_SETS * |
| 457 | sizeof(*drvdata->grp_data), |
| 458 | GFP_KERNEL); |
| 459 | if (!drvdata->grp_data) |
| 460 | return -ENOMEM; |
| 461 | |
| 462 | drvdata->condition_data = devm_kzalloc(dev, MAX_CONDITION_SETS * |
| 463 | sizeof(*drvdata->condition_data), |
| 464 | GFP_KERNEL); |
| 465 | |
| 466 | if (!drvdata->condition_data) |
| 467 | return -ENOMEM; |
| 468 | |
| 469 | drvdata->select_data = devm_kzalloc(dev, MAX_CONDITION_SETS * |
| 470 | sizeof(*drvdata->select_data), |
| 471 | GFP_KERNEL); |
| 472 | if (!drvdata->select_data) |
| 473 | return -ENOMEM; |
| 474 | |
| 475 | drvdata->timer_data = devm_kzalloc(dev, MAX_TIMER_COUNTER_SETS * |
| 476 | sizeof(*drvdata->timer_data), |
| 477 | GFP_KERNEL); |
| 478 | if (!drvdata->timer_data) |
| 479 | return -ENOMEM; |
| 480 | |
| 481 | drvdata->counter_data = devm_kzalloc(dev, MAX_TIMER_COUNTER_SETS * |
| 482 | sizeof(*drvdata->counter_data), |
| 483 | GFP_KERNEL); |
| 484 | if (!drvdata->counter_data) |
| 485 | return -ENOMEM; |
| 486 | |
| 487 | drvdata->enable = false; |
| 488 | |
| 489 | desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); |
| 490 | if (!desc) { |
| 491 | ret = -ENOMEM; |
| 492 | goto err; |
| 493 | } |
| 494 | desc->type = CORESIGHT_DEV_TYPE_NONE; |
| 495 | desc->pdata = adev->dev.platform_data; |
| 496 | desc->dev = &adev->dev; |
| 497 | desc->groups = tgu_attr_grps; |
| 498 | drvdata->csdev = coresight_register(desc); |
| 499 | if (IS_ERR(drvdata->csdev)) { |
| 500 | ret = PTR_ERR(drvdata->csdev); |
| 501 | goto err; |
| 502 | } |
| 503 | |
| 504 | pm_runtime_put(&adev->dev); |
| 505 | dev_dbg(dev, "TGU initialized\n"); |
| 506 | return 0; |
| 507 | err: |
| 508 | pm_runtime_put(&adev->dev); |
| 509 | return ret; |
| 510 | } |
| 511 | |
| 512 | static struct amba_id tgu_ids[] = { |
| 513 | { |
| 514 | .id = 0x0003b999, |
| 515 | .mask = 0x0003ffff, |
| 516 | .data = "TGU", |
| 517 | }, |
| 518 | { 0, 0}, |
| 519 | }; |
| 520 | |
| 521 | static struct amba_driver tgu_driver = { |
| 522 | .drv = { |
| 523 | .name = "coresight-tgu", |
| 524 | .owner = THIS_MODULE, |
| 525 | .suppress_bind_attrs = true, |
| 526 | }, |
| 527 | .probe = tgu_probe, |
| 528 | .id_table = tgu_ids, |
| 529 | }; |
| 530 | |
| 531 | builtin_amba_driver(tgu_driver); |
| 532 | |
| 533 | MODULE_LICENSE("GPL v2"); |
| 534 | MODULE_DESCRIPTION("CoreSight TGU driver"); |