xref: /linux/drivers/mfd/88pm800.c (revision a6021aa24f6417416d93318bbfa022ab229c33c8)
1 /*
2  * Base driver for Marvell 88PM800
3  *
4  * Copyright (C) 2012 Marvell International Ltd.
5  * Haojian Zhuang <haojian.zhuang@marvell.com>
6  * Joseph(Yossi) Hanin <yhanin@marvell.com>
7  * Qiao Zhou <zhouqiao@marvell.com>
8  *
9  * This file is subject to the terms and conditions of the GNU General
10  * Public License. See the file "COPYING" in the main directory of this
11  * archive for more details.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21  */
22 
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/err.h>
26 #include <linux/i2c.h>
27 #include <linux/mfd/core.h>
28 #include <linux/mfd/88pm80x.h>
29 #include <linux/slab.h>
30 
31 /* Interrupt Registers */
32 #define PM800_INT_STATUS1		(0x05)
33 #define PM800_ONKEY_INT_STS1		(1 << 0)
34 #define PM800_EXTON_INT_STS1		(1 << 1)
35 #define PM800_CHG_INT_STS1			(1 << 2)
36 #define PM800_BAT_INT_STS1			(1 << 3)
37 #define PM800_RTC_INT_STS1			(1 << 4)
38 #define PM800_CLASSD_OC_INT_STS1	(1 << 5)
39 
40 #define PM800_INT_STATUS2		(0x06)
41 #define PM800_VBAT_INT_STS2		(1 << 0)
42 #define PM800_VSYS_INT_STS2		(1 << 1)
43 #define PM800_VCHG_INT_STS2		(1 << 2)
44 #define PM800_TINT_INT_STS2		(1 << 3)
45 #define PM800_GPADC0_INT_STS2	(1 << 4)
46 #define PM800_TBAT_INT_STS2		(1 << 5)
47 #define PM800_GPADC2_INT_STS2	(1 << 6)
48 #define PM800_GPADC3_INT_STS2	(1 << 7)
49 
50 #define PM800_INT_STATUS3		(0x07)
51 
52 #define PM800_INT_STATUS4		(0x08)
53 #define PM800_GPIO0_INT_STS4		(1 << 0)
54 #define PM800_GPIO1_INT_STS4		(1 << 1)
55 #define PM800_GPIO2_INT_STS4		(1 << 2)
56 #define PM800_GPIO3_INT_STS4		(1 << 3)
57 #define PM800_GPIO4_INT_STS4		(1 << 4)
58 
59 #define PM800_INT_ENA_1		(0x09)
60 #define PM800_ONKEY_INT_ENA1		(1 << 0)
61 #define PM800_EXTON_INT_ENA1		(1 << 1)
62 #define PM800_CHG_INT_ENA1			(1 << 2)
63 #define PM800_BAT_INT_ENA1			(1 << 3)
64 #define PM800_RTC_INT_ENA1			(1 << 4)
65 #define PM800_CLASSD_OC_INT_ENA1	(1 << 5)
66 
67 #define PM800_INT_ENA_2		(0x0A)
68 #define PM800_VBAT_INT_ENA2		(1 << 0)
69 #define PM800_VSYS_INT_ENA2		(1 << 1)
70 #define PM800_VCHG_INT_ENA2		(1 << 2)
71 #define PM800_TINT_INT_ENA2		(1 << 3)
72 
73 #define PM800_INT_ENA_3		(0x0B)
74 #define PM800_GPADC0_INT_ENA3		(1 << 0)
75 #define PM800_GPADC1_INT_ENA3		(1 << 1)
76 #define PM800_GPADC2_INT_ENA3		(1 << 2)
77 #define PM800_GPADC3_INT_ENA3		(1 << 3)
78 #define PM800_GPADC4_INT_ENA3		(1 << 4)
79 
80 #define PM800_INT_ENA_4		(0x0C)
81 #define PM800_GPIO0_INT_ENA4		(1 << 0)
82 #define PM800_GPIO1_INT_ENA4		(1 << 1)
83 #define PM800_GPIO2_INT_ENA4		(1 << 2)
84 #define PM800_GPIO3_INT_ENA4		(1 << 3)
85 #define PM800_GPIO4_INT_ENA4		(1 << 4)
86 
87 /* number of INT_ENA & INT_STATUS regs */
88 #define PM800_INT_REG_NUM			(4)
89 
90 /* Interrupt Number in 88PM800 */
91 enum {
92 	PM800_IRQ_ONKEY,	/*EN1b0 *//*0 */
93 	PM800_IRQ_EXTON,	/*EN1b1 */
94 	PM800_IRQ_CHG,		/*EN1b2 */
95 	PM800_IRQ_BAT,		/*EN1b3 */
96 	PM800_IRQ_RTC,		/*EN1b4 */
97 	PM800_IRQ_CLASSD,	/*EN1b5 *//*5 */
98 	PM800_IRQ_VBAT,		/*EN2b0 */
99 	PM800_IRQ_VSYS,		/*EN2b1 */
100 	PM800_IRQ_VCHG,		/*EN2b2 */
101 	PM800_IRQ_TINT,		/*EN2b3 */
102 	PM800_IRQ_GPADC0,	/*EN3b0 *//*10 */
103 	PM800_IRQ_GPADC1,	/*EN3b1 */
104 	PM800_IRQ_GPADC2,	/*EN3b2 */
105 	PM800_IRQ_GPADC3,	/*EN3b3 */
106 	PM800_IRQ_GPADC4,	/*EN3b4 */
107 	PM800_IRQ_GPIO0,	/*EN4b0 *//*15 */
108 	PM800_IRQ_GPIO1,	/*EN4b1 */
109 	PM800_IRQ_GPIO2,	/*EN4b2 */
110 	PM800_IRQ_GPIO3,	/*EN4b3 */
111 	PM800_IRQ_GPIO4,	/*EN4b4 *//*19 */
112 	PM800_MAX_IRQ,
113 };
114 
115 /* PM800: generation identification number */
116 #define PM800_CHIP_GEN_ID_NUM	0x3
117 
118 static const struct i2c_device_id pm80x_id_table[] = {
119 	{ "88PM800" },
120 	{} /* NULL terminated */
121 };
122 MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
123 
124 static const struct resource rtc_resources[] = {
125 	DEFINE_RES_IRQ_NAMED(PM800_IRQ_RTC, "88pm80x-rtc"),
126 };
127 
128 static struct mfd_cell rtc_devs[] = {
129 	{
130 	 .name = "88pm80x-rtc",
131 	 .num_resources = ARRAY_SIZE(rtc_resources),
132 	 .resources = &rtc_resources[0],
133 	 .id = -1,
134 	 },
135 };
136 
137 static struct resource onkey_resources[] = {
138 	DEFINE_RES_IRQ_NAMED(PM800_IRQ_ONKEY, "88pm80x-onkey"),
139 };
140 
141 static const struct mfd_cell onkey_devs[] = {
142 	{
143 	 .name = "88pm80x-onkey",
144 	 .num_resources = 1,
145 	 .resources = &onkey_resources[0],
146 	 .id = -1,
147 	 },
148 };
149 
150 static const struct mfd_cell regulator_devs[] = {
151 	{
152 	 .name = "88pm80x-regulator",
153 	 .id = -1,
154 	},
155 };
156 
157 static const struct regmap_irq pm800_irqs[] = {
158 	/* INT0 */
159 	[PM800_IRQ_ONKEY] = {
160 		.mask = PM800_ONKEY_INT_ENA1,
161 	},
162 	[PM800_IRQ_EXTON] = {
163 		.mask = PM800_EXTON_INT_ENA1,
164 	},
165 	[PM800_IRQ_CHG] = {
166 		.mask = PM800_CHG_INT_ENA1,
167 	},
168 	[PM800_IRQ_BAT] = {
169 		.mask = PM800_BAT_INT_ENA1,
170 	},
171 	[PM800_IRQ_RTC] = {
172 		.mask = PM800_RTC_INT_ENA1,
173 	},
174 	[PM800_IRQ_CLASSD] = {
175 		.mask = PM800_CLASSD_OC_INT_ENA1,
176 	},
177 	/* INT1 */
178 	[PM800_IRQ_VBAT] = {
179 		.reg_offset = 1,
180 		.mask = PM800_VBAT_INT_ENA2,
181 	},
182 	[PM800_IRQ_VSYS] = {
183 		.reg_offset = 1,
184 		.mask = PM800_VSYS_INT_ENA2,
185 	},
186 	[PM800_IRQ_VCHG] = {
187 		.reg_offset = 1,
188 		.mask = PM800_VCHG_INT_ENA2,
189 	},
190 	[PM800_IRQ_TINT] = {
191 		.reg_offset = 1,
192 		.mask = PM800_TINT_INT_ENA2,
193 	},
194 	/* INT2 */
195 	[PM800_IRQ_GPADC0] = {
196 		.reg_offset = 2,
197 		.mask = PM800_GPADC0_INT_ENA3,
198 	},
199 	[PM800_IRQ_GPADC1] = {
200 		.reg_offset = 2,
201 		.mask = PM800_GPADC1_INT_ENA3,
202 	},
203 	[PM800_IRQ_GPADC2] = {
204 		.reg_offset = 2,
205 		.mask = PM800_GPADC2_INT_ENA3,
206 	},
207 	[PM800_IRQ_GPADC3] = {
208 		.reg_offset = 2,
209 		.mask = PM800_GPADC3_INT_ENA3,
210 	},
211 	[PM800_IRQ_GPADC4] = {
212 		.reg_offset = 2,
213 		.mask = PM800_GPADC4_INT_ENA3,
214 	},
215 	/* INT3 */
216 	[PM800_IRQ_GPIO0] = {
217 		.reg_offset = 3,
218 		.mask = PM800_GPIO0_INT_ENA4,
219 	},
220 	[PM800_IRQ_GPIO1] = {
221 		.reg_offset = 3,
222 		.mask = PM800_GPIO1_INT_ENA4,
223 	},
224 	[PM800_IRQ_GPIO2] = {
225 		.reg_offset = 3,
226 		.mask = PM800_GPIO2_INT_ENA4,
227 	},
228 	[PM800_IRQ_GPIO3] = {
229 		.reg_offset = 3,
230 		.mask = PM800_GPIO3_INT_ENA4,
231 	},
232 	[PM800_IRQ_GPIO4] = {
233 		.reg_offset = 3,
234 		.mask = PM800_GPIO4_INT_ENA4,
235 	},
236 };
237 
238 static int device_gpadc_init(struct pm80x_chip *chip,
239 				       struct pm80x_platform_data *pdata)
240 {
241 	struct pm80x_subchip *subchip = chip->subchip;
242 	struct regmap *map = subchip->regmap_gpadc;
243 	int data = 0, mask = 0, ret = 0;
244 
245 	if (!map) {
246 		dev_warn(chip->dev,
247 			 "Warning: gpadc regmap is not available!\n");
248 		return -EINVAL;
249 	}
250 	/*
251 	 * initialize GPADC without activating it turn on GPADC
252 	 * measurments
253 	 */
254 	ret = regmap_update_bits(map,
255 				 PM800_GPADC_MISC_CONFIG2,
256 				 PM800_GPADC_MISC_GPFSM_EN,
257 				 PM800_GPADC_MISC_GPFSM_EN);
258 	if (ret < 0)
259 		goto out;
260 	/*
261 	 * This function configures the ADC as requires for
262 	 * CP implementation.CP does not "own" the ADC configuration
263 	 * registers and relies on AP.
264 	 * Reason: enable automatic ADC measurements needed
265 	 * for CP to get VBAT and RF temperature readings.
266 	 */
267 	ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN1,
268 				 PM800_MEAS_EN1_VBAT, PM800_MEAS_EN1_VBAT);
269 	if (ret < 0)
270 		goto out;
271 	ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN2,
272 				 (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN),
273 				 (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN));
274 	if (ret < 0)
275 		goto out;
276 
277 	/*
278 	 * the defult of PM800 is GPADC operates at 100Ks/s rate
279 	 * and Number of GPADC slots with active current bias prior
280 	 * to GPADC sampling = 1 slot for all GPADCs set for
281 	 * Temprature mesurmants
282 	 */
283 	mask = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
284 		PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
285 
286 	if (pdata && (pdata->batt_det == 0))
287 		data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
288 			PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
289 	else
290 		data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN2 |
291 			PM800_GPADC_GP_BIAS_EN3);
292 
293 	ret = regmap_update_bits(map, PM800_GP_BIAS_ENA1, mask, data);
294 	if (ret < 0)
295 		goto out;
296 
297 	dev_info(chip->dev, "pm800 device_gpadc_init: Done\n");
298 	return 0;
299 
300 out:
301 	dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n");
302 	return ret;
303 }
304 
305 static int device_onkey_init(struct pm80x_chip *chip,
306 				struct pm80x_platform_data *pdata)
307 {
308 	int ret;
309 
310 	ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
311 			      ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0,
312 			      NULL);
313 	if (ret) {
314 		dev_err(chip->dev, "Failed to add onkey subdev\n");
315 		return ret;
316 	}
317 
318 	return 0;
319 }
320 
321 static int device_rtc_init(struct pm80x_chip *chip,
322 				struct pm80x_platform_data *pdata)
323 {
324 	int ret;
325 
326 	if (pdata) {
327 		rtc_devs[0].platform_data = pdata->rtc;
328 		rtc_devs[0].pdata_size =
329 				pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0;
330 	}
331 	ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
332 			      ARRAY_SIZE(rtc_devs), NULL, 0, NULL);
333 	if (ret) {
334 		dev_err(chip->dev, "Failed to add rtc subdev\n");
335 		return ret;
336 	}
337 
338 	return 0;
339 }
340 
341 static int device_regulator_init(struct pm80x_chip *chip,
342 					   struct pm80x_platform_data *pdata)
343 {
344 	int ret;
345 
346 	ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
347 			      ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
348 	if (ret) {
349 		dev_err(chip->dev, "Failed to add regulator subdev\n");
350 		return ret;
351 	}
352 
353 	return 0;
354 }
355 
356 static int device_irq_init_800(struct pm80x_chip *chip)
357 {
358 	struct regmap *map = chip->regmap;
359 	unsigned long flags = IRQF_ONESHOT;
360 	int data, mask, ret = -EINVAL;
361 
362 	if (!map || !chip->irq) {
363 		dev_err(chip->dev, "incorrect parameters\n");
364 		return -EINVAL;
365 	}
366 
367 	/*
368 	 * irq_mode defines the way of clearing interrupt. it's read-clear by
369 	 * default.
370 	 */
371 	mask =
372 	    PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
373 	    PM800_WAKEUP2_INT_MASK;
374 
375 	data = PM800_WAKEUP2_INT_CLEAR;
376 	ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);
377 
378 	if (ret < 0)
379 		goto out;
380 
381 	ret =
382 	    regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
383 				chip->regmap_irq_chip, &chip->irq_data);
384 
385 out:
386 	return ret;
387 }
388 
389 static void device_irq_exit_800(struct pm80x_chip *chip)
390 {
391 	regmap_del_irq_chip(chip->irq, chip->irq_data);
392 }
393 
394 static const struct regmap_irq_chip pm800_irq_chip = {
395 	.name = "88pm800",
396 	.irqs = pm800_irqs,
397 	.num_irqs = ARRAY_SIZE(pm800_irqs),
398 
399 	.num_regs = 4,
400 	.status_base = PM800_INT_STATUS1,
401 	.unmask_base = PM800_INT_ENA_1,
402 	.ack_base = PM800_INT_STATUS1,
403 };
404 
405 static int pm800_pages_init(struct pm80x_chip *chip)
406 {
407 	struct pm80x_subchip *subchip;
408 	struct i2c_client *client = chip->client;
409 
410 	int ret = 0;
411 
412 	subchip = chip->subchip;
413 	if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr)
414 		return -ENODEV;
415 
416 	/* PM800 block power page */
417 	subchip->power_page = i2c_new_dummy_device(client->adapter,
418 					    subchip->power_page_addr);
419 	if (IS_ERR(subchip->power_page)) {
420 		ret = PTR_ERR(subchip->power_page);
421 		goto out;
422 	}
423 
424 	subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page,
425 						     &pm80x_regmap_config);
426 	if (IS_ERR(subchip->regmap_power)) {
427 		ret = PTR_ERR(subchip->regmap_power);
428 		dev_err(chip->dev,
429 			"Failed to allocate regmap_power: %d\n", ret);
430 		goto out;
431 	}
432 
433 	i2c_set_clientdata(subchip->power_page, chip);
434 
435 	/* PM800 block GPADC */
436 	subchip->gpadc_page = i2c_new_dummy_device(client->adapter,
437 					    subchip->gpadc_page_addr);
438 	if (IS_ERR(subchip->gpadc_page)) {
439 		ret = PTR_ERR(subchip->gpadc_page);
440 		goto out;
441 	}
442 
443 	subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page,
444 						     &pm80x_regmap_config);
445 	if (IS_ERR(subchip->regmap_gpadc)) {
446 		ret = PTR_ERR(subchip->regmap_gpadc);
447 		dev_err(chip->dev,
448 			"Failed to allocate regmap_gpadc: %d\n", ret);
449 		goto out;
450 	}
451 	i2c_set_clientdata(subchip->gpadc_page, chip);
452 
453 out:
454 	return ret;
455 }
456 
457 static void pm800_pages_exit(struct pm80x_chip *chip)
458 {
459 	struct pm80x_subchip *subchip;
460 
461 	subchip = chip->subchip;
462 
463 	if (subchip && subchip->power_page)
464 		i2c_unregister_device(subchip->power_page);
465 
466 	if (subchip && subchip->gpadc_page)
467 		i2c_unregister_device(subchip->gpadc_page);
468 }
469 
470 static int device_800_init(struct pm80x_chip *chip,
471 				     struct pm80x_platform_data *pdata)
472 {
473 	int ret;
474 	unsigned int val;
475 
476 	/*
477 	 * alarm wake up bit will be clear in device_irq_init(),
478 	 * read before that
479 	 */
480 	ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);
481 	if (ret < 0) {
482 		dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);
483 		goto out;
484 	}
485 	if (val & PM800_ALARM_WAKEUP) {
486 		if (pdata && pdata->rtc)
487 			pdata->rtc->rtc_wakeup = 1;
488 	}
489 
490 	ret = device_gpadc_init(chip, pdata);
491 	if (ret < 0) {
492 		dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__);
493 		goto out;
494 	}
495 
496 	chip->regmap_irq_chip = &pm800_irq_chip;
497 
498 	ret = device_irq_init_800(chip);
499 	if (ret < 0) {
500 		dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__);
501 		goto out;
502 	}
503 
504 	ret = device_onkey_init(chip, pdata);
505 	if (ret) {
506 		dev_err(chip->dev, "Failed to add onkey subdev\n");
507 		goto out_dev;
508 	}
509 
510 	ret = device_rtc_init(chip, pdata);
511 	if (ret) {
512 		dev_err(chip->dev, "Failed to add rtc subdev\n");
513 		goto out;
514 	}
515 
516 	ret = device_regulator_init(chip, pdata);
517 	if (ret) {
518 		dev_err(chip->dev, "Failed to add regulators subdev\n");
519 		goto out;
520 	}
521 
522 	return 0;
523 out_dev:
524 	mfd_remove_devices(chip->dev);
525 	device_irq_exit_800(chip);
526 out:
527 	return ret;
528 }
529 
530 static int pm800_probe(struct i2c_client *client)
531 {
532 	int ret = 0;
533 	struct pm80x_chip *chip;
534 	struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
535 	struct pm80x_subchip *subchip;
536 
537 	ret = pm80x_init(client);
538 	if (ret) {
539 		dev_err(&client->dev, "pm800_init fail\n");
540 		goto out_init;
541 	}
542 
543 	chip = i2c_get_clientdata(client);
544 
545 	/* init subchip for PM800 */
546 	subchip =
547 	    devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip),
548 			 GFP_KERNEL);
549 	if (!subchip) {
550 		ret = -ENOMEM;
551 		goto err_subchip_alloc;
552 	}
553 
554 	/* pm800 has 2 addtional pages to support power and gpadc. */
555 	subchip->power_page_addr = client->addr + 1;
556 	subchip->gpadc_page_addr = client->addr + 2;
557 	chip->subchip = subchip;
558 
559 	ret = pm800_pages_init(chip);
560 	if (ret) {
561 		dev_err(&client->dev, "pm800_pages_init failed!\n");
562 		goto err_device_init;
563 	}
564 
565 	ret = device_800_init(chip, pdata);
566 	if (ret) {
567 		dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
568 		goto err_device_init;
569 	}
570 
571 	if (pdata && pdata->plat_config)
572 		pdata->plat_config(chip, pdata);
573 
574 	return 0;
575 
576 err_device_init:
577 	pm800_pages_exit(chip);
578 err_subchip_alloc:
579 	pm80x_deinit();
580 out_init:
581 	return ret;
582 }
583 
584 static void pm800_remove(struct i2c_client *client)
585 {
586 	struct pm80x_chip *chip = i2c_get_clientdata(client);
587 
588 	mfd_remove_devices(chip->dev);
589 	device_irq_exit_800(chip);
590 
591 	pm800_pages_exit(chip);
592 	pm80x_deinit();
593 }
594 
595 static struct i2c_driver pm800_driver = {
596 	.driver = {
597 		.name = "88PM800",
598 		.pm = pm_sleep_ptr(&pm80x_pm_ops),
599 		},
600 	.probe = pm800_probe,
601 	.remove = pm800_remove,
602 	.id_table = pm80x_id_table,
603 };
604 
605 static int __init pm800_i2c_init(void)
606 {
607 	return i2c_add_driver(&pm800_driver);
608 }
609 subsys_initcall(pm800_i2c_init);
610 
611 static void __exit pm800_i2c_exit(void)
612 {
613 	i2c_del_driver(&pm800_driver);
614 }
615 module_exit(pm800_i2c_exit);
616 
617 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
618 MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
619 MODULE_LICENSE("GPL");
620