1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // rt721-sdca-sdw.c -- rt721 SDCA ALSA SoC audio driver
4 //
5 // Copyright(c) 2024 Realtek Semiconductor Corp.
6 //
7 //
8
9 #include <linux/cleanup.h>
10 #include <linux/delay.h>
11 #include <linux/device.h>
12 #include <linux/module.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/soundwire/sdw_registers.h>
15
16 #include "rt721-sdca.h"
17 #include "rt721-sdca-sdw.h"
18 #include "rt-sdw-common.h"
19
rt721_sdca_readable_register(struct device * dev,unsigned int reg)20 static bool rt721_sdca_readable_register(struct device *dev, unsigned int reg)
21 {
22 switch (reg) {
23 case 0x2f01 ... 0x2f0a:
24 case 0x2f35:
25 case 0x2f50:
26 case 0x2f51:
27 case 0x2f58 ... 0x2f5d:
28 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_XUV,
29 RT721_SDCA_CTL_XUV, 0):
30 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_GE49,
31 RT721_SDCA_CTL_SELECTED_MODE, 0):
32 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_GE49,
33 RT721_SDCA_CTL_DETECTED_MODE, 0):
34 case SDW_SDCA_CTL(FUNC_NUM_HID, RT721_SDCA_ENT_HID01,
35 RT721_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ... SDW_SDCA_CTL(FUNC_NUM_HID,
36 RT721_SDCA_ENT_HID01, RT721_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
37 case RT721_BUF_ADDR_HID1 ... RT721_BUF_ADDR_HID2:
38 return true;
39 default:
40 return false;
41 }
42 }
43
rt721_sdca_volatile_register(struct device * dev,unsigned int reg)44 static bool rt721_sdca_volatile_register(struct device *dev, unsigned int reg)
45 {
46 switch (reg) {
47 case 0x2f01:
48 case 0x2f51:
49 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_GE49,
50 RT721_SDCA_CTL_DETECTED_MODE, 0):
51 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_XUV,
52 RT721_SDCA_CTL_XUV, 0):
53 case SDW_SDCA_CTL(FUNC_NUM_HID, RT721_SDCA_ENT_HID01,
54 RT721_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ... SDW_SDCA_CTL(FUNC_NUM_HID,
55 RT721_SDCA_ENT_HID01, RT721_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
56 case RT721_BUF_ADDR_HID1 ... RT721_BUF_ADDR_HID2:
57 return true;
58 default:
59 return false;
60 }
61 }
62
rt721_sdca_mbq_readable_register(struct device * dev,unsigned int reg)63 static bool rt721_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
64 {
65 switch (reg) {
66 case 0x0900004 ... 0x0900009:
67 case 0x0a00005:
68 case 0x0c00005:
69 case 0x0d00014:
70 case 0x0310100:
71 case 0x2000000 ... 0x2000003:
72 case 0x2000013:
73 case 0x2000026:
74 case 0x200002c:
75 case 0x200003c:
76 case 0x2000046:
77 case 0x5810000:
78 case 0x5810036:
79 case 0x5810037:
80 case 0x5810038:
81 case 0x5810039:
82 case 0x5b10018:
83 case 0x5b10019:
84 case 0x5f00045:
85 case 0x5f00048:
86 case 0x6100000:
87 case 0x6100005:
88 case 0x6100006:
89 case 0x610000d:
90 case 0x6100010:
91 case 0x6100011:
92 case 0x6100013:
93 case 0x6100015:
94 case 0x6100017:
95 case 0x6100025:
96 case 0x6100029:
97 case 0x610002c ... 0x610002f:
98 case 0x6100053 ... 0x6100055:
99 case 0x6100057:
100 case 0x610005a:
101 case 0x610005b:
102 case 0x610006a:
103 case 0x610006d:
104 case 0x6100092:
105 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_USER_FU05, RT721_SDCA_CTL_FU_VOLUME,
106 CH_L):
107 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_USER_FU05, RT721_SDCA_CTL_FU_VOLUME,
108 CH_R):
109 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_USER_FU0F, RT721_SDCA_CTL_FU_VOLUME,
110 CH_L):
111 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_USER_FU0F, RT721_SDCA_CTL_FU_VOLUME,
112 CH_R):
113 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_PLATFORM_FU44,
114 RT721_SDCA_CTL_FU_CH_GAIN, CH_L):
115 case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT721_SDCA_ENT_PLATFORM_FU44,
116 RT721_SDCA_CTL_FU_CH_GAIN, CH_R):
117 case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT721_SDCA_ENT_USER_FU1E, RT721_SDCA_CTL_FU_VOLUME,
118 CH_01):
119 case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT721_SDCA_ENT_USER_FU1E, RT721_SDCA_CTL_FU_VOLUME,
120 CH_02):
121 case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT721_SDCA_ENT_USER_FU1E, RT721_SDCA_CTL_FU_VOLUME,
122 CH_03):
123 case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT721_SDCA_ENT_USER_FU1E, RT721_SDCA_CTL_FU_VOLUME,
124 CH_04):
125 case SDW_SDCA_CTL(FUNC_NUM_AMP, RT721_SDCA_ENT_USER_FU06, RT721_SDCA_CTL_FU_VOLUME, CH_L):
126 case SDW_SDCA_CTL(FUNC_NUM_AMP, RT721_SDCA_ENT_USER_FU06, RT721_SDCA_CTL_FU_VOLUME, CH_R):
127 return true;
128 default:
129 return false;
130 }
131 }
132
rt721_sdca_mbq_volatile_register(struct device * dev,unsigned int reg)133 static bool rt721_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
134 {
135 switch (reg) {
136 case 0x0310100:
137 case 0x0900005:
138 case 0x0900009:
139 case 0x0a00005:
140 case 0x0c00005:
141 case 0x0d00014:
142 case 0x2000000:
143 case 0x200000d:
144 case 0x2000019:
145 case 0x2000020:
146 case 0x2000026:
147 case 0x200002c:
148 case 0x2000030:
149 case 0x2000046:
150 case 0x2000067:
151 case 0x2000084:
152 case 0x2000086:
153 case 0x5810000:
154 case 0x5810036:
155 case 0x5810037:
156 case 0x5810038:
157 case 0x5810039:
158 case 0x5b10018:
159 case 0x5b10019:
160 case 0x6100006:
161 return true;
162 default:
163 return false;
164 }
165 }
166
167 static const struct regmap_config rt721_sdca_regmap = {
168 .reg_bits = 32,
169 .val_bits = 8,
170 .readable_reg = rt721_sdca_readable_register,
171 .volatile_reg = rt721_sdca_volatile_register,
172 .max_register = 0x44ffffff,
173 .reg_defaults = rt721_sdca_reg_defaults,
174 .num_reg_defaults = ARRAY_SIZE(rt721_sdca_reg_defaults),
175 .cache_type = REGCACHE_MAPLE,
176 .use_single_read = true,
177 .use_single_write = true,
178 };
179
180 static const struct regmap_config rt721_sdca_mbq_regmap = {
181 .name = "sdw-mbq",
182 .reg_bits = 32,
183 .val_bits = 16,
184 .readable_reg = rt721_sdca_mbq_readable_register,
185 .volatile_reg = rt721_sdca_mbq_volatile_register,
186 .max_register = 0x41000312,
187 .reg_defaults = rt721_sdca_mbq_defaults,
188 .num_reg_defaults = ARRAY_SIZE(rt721_sdca_mbq_defaults),
189 .cache_type = REGCACHE_MAPLE,
190 .use_single_read = true,
191 .use_single_write = true,
192 };
193
rt721_sdca_update_status(struct sdw_slave * slave,enum sdw_slave_status status)194 static int rt721_sdca_update_status(struct sdw_slave *slave,
195 enum sdw_slave_status status)
196 {
197 struct rt721_sdca_priv *rt721 = dev_get_drvdata(&slave->dev);
198
199 if (status == SDW_SLAVE_UNATTACHED)
200 rt721->hw_init = false;
201
202 if (status == SDW_SLAVE_ATTACHED) {
203 if (rt721->hs_jack) {
204 /*
205 * Due to the SCP_SDCA_INTMASK will be cleared by any reset, and then
206 * if the device attached again, we will need to set the setting back.
207 * It could avoid losing the jack detection interrupt.
208 * This also could sync with the cache value as the rt721_sdca_jack_init set.
209 */
210 sdw_write_no_pm(rt721->slave, SDW_SCP_SDCA_INTMASK1,
211 SDW_SCP_SDCA_INTMASK_SDCA_0);
212 sdw_write_no_pm(rt721->slave, SDW_SCP_SDCA_INTMASK2,
213 SDW_SCP_SDCA_INTMASK_SDCA_8);
214 }
215 }
216
217 /*
218 * Perform initialization only if slave status is present and
219 * hw_init flag is false
220 */
221 if (rt721->hw_init || status != SDW_SLAVE_ATTACHED)
222 return 0;
223
224 /* perform I/O transfers required for Slave initialization */
225 return rt721_sdca_io_init(&slave->dev, slave);
226 }
227
rt721_sdca_read_prop(struct sdw_slave * slave)228 static int rt721_sdca_read_prop(struct sdw_slave *slave)
229 {
230 struct sdw_slave_prop *prop = &slave->prop;
231 int nval;
232 int i, j;
233 u32 bit;
234 unsigned long addr;
235 struct sdw_dpn_prop *dpn;
236
237 sdw_slave_read_prop(slave);
238 prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
239 prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
240
241 prop->paging_support = true;
242
243 /*
244 * port = 1 for headphone playback
245 * port = 2 for headset-mic capture
246 * port = 3 for speaker playback
247 * port = 6 for digital-mic capture
248 */
249 prop->source_ports = BIT(6) | BIT(2); /* BITMAP: 01000100 */
250 prop->sink_ports = BIT(3) | BIT(1); /* BITMAP: 00001010 */
251
252 nval = hweight32(prop->source_ports);
253 prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
254 sizeof(*prop->src_dpn_prop), GFP_KERNEL);
255 if (!prop->src_dpn_prop)
256 return -ENOMEM;
257
258 i = 0;
259 dpn = prop->src_dpn_prop;
260 addr = prop->source_ports;
261 for_each_set_bit(bit, &addr, 32) {
262 dpn[i].num = bit;
263 dpn[i].type = SDW_DPN_FULL;
264 dpn[i].simple_ch_prep_sm = true;
265 dpn[i].ch_prep_timeout = 10;
266 i++;
267 }
268
269 /* do this again for sink now */
270 nval = hweight32(prop->sink_ports);
271 prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
272 sizeof(*prop->sink_dpn_prop), GFP_KERNEL);
273 if (!prop->sink_dpn_prop)
274 return -ENOMEM;
275
276 j = 0;
277 dpn = prop->sink_dpn_prop;
278 addr = prop->sink_ports;
279 for_each_set_bit(bit, &addr, 32) {
280 dpn[j].num = bit;
281 dpn[j].type = SDW_DPN_FULL;
282 dpn[j].simple_ch_prep_sm = true;
283 dpn[j].ch_prep_timeout = 10;
284 j++;
285 }
286
287 /* set the timeout values */
288 prop->clk_stop_timeout = 1380;
289
290 /* wake-up event */
291 prop->wake_capable = 1;
292
293 /* Three data lanes are supported by rt721-sdca codec */
294 prop->lane_control_support = true;
295
296 return 0;
297 }
298
rt721_sdca_interrupt_callback(struct sdw_slave * slave,struct sdw_slave_intr_status * status)299 static int rt721_sdca_interrupt_callback(struct sdw_slave *slave,
300 struct sdw_slave_intr_status *status)
301 {
302 struct rt721_sdca_priv *rt721 = dev_get_drvdata(&slave->dev);
303 int ret, stat;
304 int count = 0, retry = 3;
305 unsigned int sdca_cascade, scp_sdca_stat1, scp_sdca_stat2 = 0;
306
307 if (cancel_delayed_work_sync(&rt721->jack_detect_work)) {
308 dev_warn(&slave->dev, "%s the pending delayed_work was cancelled", __func__);
309 /* avoid the HID owner doesn't change to device */
310 if (rt721->scp_sdca_stat2)
311 scp_sdca_stat2 = rt721->scp_sdca_stat2;
312 }
313
314 /*
315 * The critical section below intentionally protects a rather large piece of code.
316 * We don't want to allow the system suspend to disable an interrupt while we are
317 * processing it, which could be problematic given the quirky SoundWire interrupt
318 * scheme. We do want however to prevent new workqueues from being scheduled if
319 * the disable_irq flag was set during system suspend.
320 */
321 mutex_lock(&rt721->disable_irq_lock);
322
323 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT1);
324 if (ret < 0)
325 goto io_error;
326
327 rt721->scp_sdca_stat1 = ret;
328 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT2);
329 if (ret < 0)
330 goto io_error;
331
332 rt721->scp_sdca_stat2 = ret;
333 if (scp_sdca_stat2)
334 rt721->scp_sdca_stat2 |= scp_sdca_stat2;
335 do {
336 /* clear flag */
337 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT1);
338 if (ret < 0)
339 goto io_error;
340 if (ret & SDW_SCP_SDCA_INTMASK_SDCA_0) {
341 ret = sdw_update_no_pm(rt721->slave, SDW_SCP_SDCA_INT1,
342 SDW_SCP_SDCA_INT_SDCA_0, SDW_SCP_SDCA_INT_SDCA_0);
343 if (ret < 0)
344 goto io_error;
345 }
346 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT2);
347 if (ret < 0)
348 goto io_error;
349 if (ret & SDW_SCP_SDCA_INTMASK_SDCA_8) {
350 ret = sdw_write_no_pm(rt721->slave, SDW_SCP_SDCA_INT2,
351 SDW_SCP_SDCA_INTMASK_SDCA_8);
352 if (ret < 0)
353 goto io_error;
354 }
355
356 /* check if flag clear or not */
357 ret = sdw_read_no_pm(rt721->slave, SDW_DP0_INT);
358 if (ret < 0)
359 goto io_error;
360 sdca_cascade = ret & SDW_DP0_SDCA_CASCADE;
361
362 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT1);
363 if (ret < 0)
364 goto io_error;
365 scp_sdca_stat1 = ret & SDW_SCP_SDCA_INTMASK_SDCA_0;
366
367 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT2);
368 if (ret < 0)
369 goto io_error;
370 scp_sdca_stat2 = ret & SDW_SCP_SDCA_INTMASK_SDCA_8;
371
372 stat = scp_sdca_stat1 || scp_sdca_stat2 || sdca_cascade;
373
374 count++;
375 } while (stat != 0 && count < retry);
376
377 if (stat)
378 dev_warn(&slave->dev,
379 "%s scp_sdca_stat1=0x%x, scp_sdca_stat2=0x%x\n", __func__,
380 rt721->scp_sdca_stat1, rt721->scp_sdca_stat2);
381 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT1);
382 ret = sdw_read_no_pm(rt721->slave, SDW_SCP_SDCA_INT2);
383
384 if (status->sdca_cascade && !rt721->disable_irq)
385 mod_delayed_work(system_power_efficient_wq,
386 &rt721->jack_detect_work, msecs_to_jiffies(280));
387
388 mutex_unlock(&rt721->disable_irq_lock);
389
390 return 0;
391
392 io_error:
393 mutex_unlock(&rt721->disable_irq_lock);
394 pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
395 return ret;
396 }
397
398 static const struct sdw_slave_ops rt721_sdca_slave_ops = {
399 .read_prop = rt721_sdca_read_prop,
400 .interrupt_callback = rt721_sdca_interrupt_callback,
401 .update_status = rt721_sdca_update_status,
402 };
403
rt721_sdca_sdw_probe(struct sdw_slave * slave,const struct sdw_device_id * id)404 static int rt721_sdca_sdw_probe(struct sdw_slave *slave,
405 const struct sdw_device_id *id)
406 {
407 struct regmap *regmap, *mbq_regmap;
408
409 /* Regmap Initialization */
410 mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt721_sdca_mbq_regmap);
411 if (IS_ERR(mbq_regmap))
412 return PTR_ERR(mbq_regmap);
413
414 regmap = devm_regmap_init_sdw(slave, &rt721_sdca_regmap);
415 if (IS_ERR(regmap))
416 return PTR_ERR(regmap);
417
418 return rt721_sdca_init(&slave->dev, regmap, mbq_regmap, slave);
419 }
420
rt721_sdca_sdw_remove(struct sdw_slave * slave)421 static void rt721_sdca_sdw_remove(struct sdw_slave *slave)
422 {
423 struct rt721_sdca_priv *rt721 = dev_get_drvdata(&slave->dev);
424
425 if (rt721->hw_init) {
426 cancel_delayed_work_sync(&rt721->jack_detect_work);
427 cancel_delayed_work_sync(&rt721->jack_btn_check_work);
428 }
429
430 if (rt721->first_hw_init)
431 pm_runtime_disable(&slave->dev);
432
433 mutex_destroy(&rt721->calibrate_mutex);
434 mutex_destroy(&rt721->disable_irq_lock);
435 }
436
437 static const struct sdw_device_id rt721_sdca_id[] = {
438 SDW_SLAVE_ENTRY_EXT(0x025d, 0x721, 0x3, 0x1, 0),
439 {},
440 };
441 MODULE_DEVICE_TABLE(sdw, rt721_sdca_id);
442
rt721_sdca_dev_suspend(struct device * dev)443 static int rt721_sdca_dev_suspend(struct device *dev)
444 {
445 struct rt721_sdca_priv *rt721 = dev_get_drvdata(dev);
446
447 if (!rt721->hw_init)
448 return 0;
449
450 cancel_delayed_work_sync(&rt721->jack_detect_work);
451 cancel_delayed_work_sync(&rt721->jack_btn_check_work);
452
453 regcache_cache_only(rt721->regmap, true);
454 regcache_cache_only(rt721->mbq_regmap, true);
455
456 return 0;
457 }
458
rt721_sdca_dev_system_suspend(struct device * dev)459 static int rt721_sdca_dev_system_suspend(struct device *dev)
460 {
461 struct rt721_sdca_priv *rt721_sdca = dev_get_drvdata(dev);
462 struct sdw_slave *slave = dev_to_sdw_dev(dev);
463 int ret1, ret2;
464
465 if (!rt721_sdca->hw_init)
466 return 0;
467
468 /*
469 * prevent new interrupts from being handled after the
470 * deferred work completes and before the parent disables
471 * interrupts on the link
472 */
473 scoped_guard(mutex, &rt721_sdca->disable_irq_lock) {
474 rt721_sdca->disable_irq = true;
475 ret1 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK1,
476 SDW_SCP_SDCA_INTMASK_SDCA_0, 0);
477 ret2 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK2,
478 SDW_SCP_SDCA_INTMASK_SDCA_8, 0);
479 }
480
481 if (ret1 < 0 || ret2 < 0) {
482 /* log but don't prevent suspend from happening */
483 dev_dbg(&slave->dev, "%s: could not disable SDCA interrupts\n:", __func__);
484 }
485
486 return rt721_sdca_dev_suspend(dev);
487 }
488
489 #define RT721_PROBE_TIMEOUT 5000
490
rt721_sdca_dev_resume(struct device * dev)491 static int rt721_sdca_dev_resume(struct device *dev)
492 {
493 struct sdw_slave *slave = dev_to_sdw_dev(dev);
494 struct rt721_sdca_priv *rt721 = dev_get_drvdata(dev);
495 int ret;
496
497 if (!rt721->first_hw_init)
498 return 0;
499
500 if (!slave->unattach_request) {
501 scoped_guard(mutex, &rt721->disable_irq_lock) {
502 if (rt721->disable_irq) {
503 sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK1,
504 SDW_SCP_SDCA_INTMASK_SDCA_0);
505 sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK2,
506 SDW_SCP_SDCA_INTMASK_SDCA_8);
507 rt721->disable_irq = false;
508 }
509 }
510 }
511
512 ret = sdw_slave_wait_for_init(slave, RT721_PROBE_TIMEOUT);
513 if (ret) {
514 sdw_show_ping_status(slave->bus, true);
515 return ret;
516 }
517
518 regcache_cache_only(rt721->regmap, false);
519 ret = regcache_sync(rt721->regmap);
520 if (ret) {
521 regcache_cache_only(rt721->regmap, true);
522 return ret;
523 }
524
525 regcache_cache_only(rt721->mbq_regmap, false);
526 ret = regcache_sync(rt721->mbq_regmap);
527 if (ret) {
528 regcache_cache_only(rt721->mbq_regmap, true);
529 regcache_cache_only(rt721->regmap, true);
530 return ret;
531 }
532
533 return 0;
534 }
535
536 static const struct dev_pm_ops rt721_sdca_pm = {
537 SYSTEM_SLEEP_PM_OPS(rt721_sdca_dev_system_suspend, rt721_sdca_dev_resume)
538 RUNTIME_PM_OPS(rt721_sdca_dev_suspend, rt721_sdca_dev_resume, NULL)
539 };
540
541 static struct sdw_driver rt721_sdca_sdw_driver = {
542 .driver = {
543 .name = "rt721-sdca",
544 .owner = THIS_MODULE,
545 .pm = pm_ptr(&rt721_sdca_pm),
546 },
547 .probe = rt721_sdca_sdw_probe,
548 .remove = rt721_sdca_sdw_remove,
549 .ops = &rt721_sdca_slave_ops,
550 .id_table = rt721_sdca_id,
551 };
552 module_sdw_driver(rt721_sdca_sdw_driver);
553
554 MODULE_DESCRIPTION("ASoC RT721 SDCA SDW driver");
555 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
556 MODULE_LICENSE("GPL");
557