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2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/drivers/iio/adc/twl4030-madc.c
....@@ -1,10 +1,11 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  *
34  * TWL4030 MADC module driver-This driver monitors the real time
45  * conversion of analog signals like battery temperature,
56  * battery type, battery level etc.
67  *
7
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
8
+ * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
89  * J Keerthy <j-keerthy@ti.com>
910  *
1011  * Based on twl4030-madc.c
....@@ -12,21 +13,6 @@
1213  * Mikko Ylinen <mikko.k.ylinen@nokia.com>
1314  *
1415  * Amit Kucheria <amit.kucheria@canonical.com>
15
- *
16
- * This program is free software; you can redistribute it and/or
17
- * modify it under the terms of the GNU General Public License
18
- * version 2 as published by the Free Software Foundation.
19
- *
20
- * This program is distributed in the hope that it will be useful, but
21
- * WITHOUT ANY WARRANTY; without even the implied warranty of
22
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
23
- * General Public License for more details.
24
- *
25
- * You should have received a copy of the GNU General Public License
26
- * along with this program; if not, write to the Free Software
27
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
28
- * 02110-1301 USA
29
- *
3016  */
3117 
3218 #include <linux/device.h>
....@@ -167,7 +153,7 @@
167153  * struct twl4030_madc_data - a container for madc info
168154  * @dev:		Pointer to device structure for madc
169155  * @lock:		Mutex protecting this data structure
170
- * @regulator:		Pointer to bias regulator for madc
156
+ * @usb3v1:		Pointer to bias regulator for madc
171157  * @requests:		Array of request struct corresponding to SW1, SW2 and RT
172158  * @use_second_irq:	IRQ selection (main or co-processor)
173159  * @imr:		Interrupt mask register of MADC
....@@ -175,7 +161,7 @@
175161  */
176162 struct twl4030_madc_data {
177163 	struct device *dev;
178
-	struct mutex lock;	/* mutex protecting this data structure */
164
+	struct mutex lock;
179165 	struct regulator *usb3v1;
180166 	struct twl4030_madc_request requests[TWL4030_MADC_NUM_METHODS];
181167 	bool use_second_irq;
....@@ -486,7 +472,7 @@
486472 	struct twl4030_madc_data *madc = _madc;
487473 	const struct twl4030_madc_conversion_method *method;
488474 	u8 isr_val, imr_val;
489
-	int i, len, ret;
475
+	int i, ret;
490476 	struct twl4030_madc_request *r;
491477 
492478 	mutex_lock(&madc->lock);
....@@ -509,7 +495,7 @@
509495 		ret = twl4030_madc_disable_irq(madc, i);
510496 		if (ret < 0)
511497 			dev_dbg(madc->dev, "Disable interrupt failed %d\n", i);
512
-		madc->requests[i].result_pending = 1;
498
+		madc->requests[i].result_pending = true;
513499 	}
514500 	for (i = 0; i < TWL4030_MADC_NUM_METHODS; i++) {
515501 		r = &madc->requests[i];
....@@ -518,11 +504,11 @@
518504 			continue;
519505 		method = &twl4030_conversion_methods[r->method];
520506 		/* Read results */
521
-		len = twl4030_madc_read_channels(madc, method->rbase,
522
-						 r->channels, r->rbuf, r->raw);
507
+		twl4030_madc_read_channels(madc, method->rbase,
508
+					   r->channels, r->rbuf, r->raw);
523509 		/* Free request */
524
-		r->result_pending = 0;
525
-		r->active = 0;
510
+		r->result_pending = false;
511
+		r->active = false;
526512 	}
527513 	mutex_unlock(&madc->lock);
528514 
....@@ -535,15 +521,15 @@
535521 	 */
536522 	for (i = 0; i < TWL4030_MADC_NUM_METHODS; i++) {
537523 		r = &madc->requests[i];
538
-		if (r->active == 0)
524
+		if (!r->active)
539525 			continue;
540526 		method = &twl4030_conversion_methods[r->method];
541527 		/* Read results */
542
-		len = twl4030_madc_read_channels(madc, method->rbase,
543
-						 r->channels, r->rbuf, r->raw);
528
+		twl4030_madc_read_channels(madc, method->rbase,
529
+					   r->channels, r->rbuf, r->raw);
544530 		/* Free request */
545
-		r->result_pending = 0;
546
-		r->active = 0;
531
+		r->result_pending = false;
532
+		r->active = false;
547533 	}
548534 	mutex_unlock(&madc->lock);
549535 
....@@ -666,16 +652,16 @@
666652 	ret = twl4030_madc_start_conversion(twl4030_madc, req->method);
667653 	if (ret < 0)
668654 		goto out;
669
-	twl4030_madc->requests[req->method].active = 1;
655
+	twl4030_madc->requests[req->method].active = true;
670656 	/* Wait until conversion is ready (ctrl register returns EOC) */
671657 	ret = twl4030_madc_wait_conversion_ready(twl4030_madc, 5, method->ctrl);
672658 	if (ret) {
673
-		twl4030_madc->requests[req->method].active = 0;
659
+		twl4030_madc->requests[req->method].active = false;
674660 		goto out;
675661 	}
676662 	ret = twl4030_madc_read_channels(twl4030_madc, method->rbase,
677663 					 req->channels, req->rbuf, req->raw);
678
-	twl4030_madc->requests[req->method].active = 0;
664
+	twl4030_madc->requests[req->method].active = false;
679665 
680666 out:
681667 	mutex_unlock(&twl4030_madc->lock);
....@@ -786,8 +772,6 @@
786772 	madc->dev = &pdev->dev;
787773 
788774 	iio_dev->name = dev_name(&pdev->dev);
789
-	iio_dev->dev.parent = &pdev->dev;
790
-	iio_dev->dev.of_node = pdev->dev.of_node;
791775 	iio_dev->info = &twl4030_madc_iio_info;
792776 	iio_dev->modes = INDIO_DIRECT_MODE;
793777 	iio_dev->channels = twl4030_madc_iio_channels;