forked from ~ljy/RK356X_SDK_RELEASE

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2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d 
 kernel/drivers/media/radio/radio-si476x.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * drivers/media/radio/radio-si476x.c -- V4L2 driver for SI476X chips
34  *
....@@ -5,16 +6,6 @@
56  * Copyright (C) 2013 Andrey Smirnov
67  *
78  * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
8
- *
9
- * This program is free software; you can redistribute it and/or modify
10
- * it under the terms of the GNU General Public License as published by
11
- * the Free Software Foundation; version 2 of the License.
12
- *
13
- * This program is distributed in the hope that it will be useful, but
14
- * WITHOUT ANY WARRANTY; without even the implied warranty of
15
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
- * General Public License for more details.
17
- *
189  */
1910 
2011 #include <linux/module.h>
....@@ -114,7 +105,8 @@
114105 si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode)
115106 {
116107 	switch (mode) {
117
-	default:		/* FALLTHROUGH */
108
+	default:
109
+		fallthrough;
118110 	case SI476X_PHDIV_DISABLED:
119111 		return SI476X_IDX_PHDIV_DISABLED;
120112 	case SI476X_PHDIV_PRIMARY_COMBINING:
....@@ -340,24 +332,11 @@
340332 {
341333 	struct si476x_radio *radio = video_drvdata(file);
342334 
343
-	strlcpy(capability->driver, radio->v4l2dev.name,
335
+	strscpy(capability->driver, radio->v4l2dev.name,
344336 		sizeof(capability->driver));
345
-	strlcpy(capability->card,   DRIVER_CARD, sizeof(capability->card));
337
+	strscpy(capability->card,   DRIVER_CARD, sizeof(capability->card));
346338 	snprintf(capability->bus_info, sizeof(capability->bus_info),
347339 		 "platform:%s", radio->v4l2dev.name);
348
-
349
-	capability->device_caps = V4L2_CAP_TUNER
350
-		| V4L2_CAP_RADIO
351
-		| V4L2_CAP_HW_FREQ_SEEK;
352
-
353
-	si476x_core_lock(radio->core);
354
-	if (!si476x_core_is_a_secondary_tuner(radio->core))
355
-		capability->device_caps |= V4L2_CAP_RDS_CAPTURE
356
-			| V4L2_CAP_READWRITE;
357
-	si476x_core_unlock(radio->core);
358
-
359
-	capability->capabilities = capability->device_caps
360
-		| V4L2_CAP_DEVICE_CAPS;
361340 	return 0;
362341 }
363342 
....@@ -428,15 +407,15 @@
428407 	si476x_core_lock(radio->core);
429408 
430409 	if (si476x_core_is_a_secondary_tuner(radio->core)) {
431
-		strlcpy(tuner->name, "FM (secondary)", sizeof(tuner->name));
410
+		strscpy(tuner->name, "FM (secondary)", sizeof(tuner->name));
432411 		tuner->rxsubchans = 0;
433412 		tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
434413 	} else if (si476x_core_has_am(radio->core)) {
435414 		if (si476x_core_is_a_primary_tuner(radio->core))
436
-			strlcpy(tuner->name, "AM/FM (primary)",
415
+			strscpy(tuner->name, "AM/FM (primary)",
437416 				sizeof(tuner->name));
438417 		else
439
-			strlcpy(tuner->name, "AM/FM", sizeof(tuner->name));
418
+			strscpy(tuner->name, "AM/FM", sizeof(tuner->name));
440419 
441420 		tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO
442421 			| V4L2_TUNER_SUB_RDS;
....@@ -446,7 +425,7 @@
446425 
447426 		tuner->rangelow = si476x_bands[SI476X_BAND_AM].rangelow;
448427 	} else {
449
-		strlcpy(tuner->name, "FM", sizeof(tuner->name));
428
+		strscpy(tuner->name, "FM", sizeof(tuner->name));
450429 		tuner->rxsubchans = V4L2_TUNER_SUB_RDS;
451430 		tuner->capability |= V4L2_TUNER_CAP_RDS
452431 			| V4L2_TUNER_CAP_RDS_BLOCK_IO
....@@ -1366,60 +1345,24 @@
13661345 };
13671346 
13681347 
1369
-static int si476x_radio_init_debugfs(struct si476x_radio *radio)
1348
+static void si476x_radio_init_debugfs(struct si476x_radio *radio)
13701349 {
1371
-	struct dentry	*dentry;
1372
-	int		ret;
1350
+	radio->debugfs = debugfs_create_dir(dev_name(radio->v4l2dev.dev), NULL);
13731351 
1374
-	dentry = debugfs_create_dir(dev_name(radio->v4l2dev.dev), NULL);
1375
-	if (IS_ERR(dentry)) {
1376
-		ret = PTR_ERR(dentry);
1377
-		goto exit;
1378
-	}
1379
-	radio->debugfs = dentry;
1352
+	debugfs_create_file("acf", S_IRUGO, radio->debugfs, radio,
1353
+			    &radio_acf_fops);
13801354 
1381
-	dentry = debugfs_create_file("acf", S_IRUGO,
1382
-				     radio->debugfs, radio, &radio_acf_fops);
1383
-	if (IS_ERR(dentry)) {
1384
-		ret = PTR_ERR(dentry);
1385
-		goto cleanup;
1386
-	}
1355
+	debugfs_create_file("rds_blckcnt", S_IRUGO, radio->debugfs, radio,
1356
+			    &radio_rds_blckcnt_fops);
13871357 
1388
-	dentry = debugfs_create_file("rds_blckcnt", S_IRUGO,
1389
-				     radio->debugfs, radio,
1390
-				     &radio_rds_blckcnt_fops);
1391
-	if (IS_ERR(dentry)) {
1392
-		ret = PTR_ERR(dentry);
1393
-		goto cleanup;
1394
-	}
1358
+	debugfs_create_file("agc", S_IRUGO, radio->debugfs, radio,
1359
+			    &radio_agc_fops);
13951360 
1396
-	dentry = debugfs_create_file("agc", S_IRUGO,
1397
-				     radio->debugfs, radio, &radio_agc_fops);
1398
-	if (IS_ERR(dentry)) {
1399
-		ret = PTR_ERR(dentry);
1400
-		goto cleanup;
1401
-	}
1361
+	debugfs_create_file("rsq", S_IRUGO, radio->debugfs, radio,
1362
+			    &radio_rsq_fops);
14021363 
1403
-	dentry = debugfs_create_file("rsq", S_IRUGO,
1404
-				     radio->debugfs, radio, &radio_rsq_fops);
1405
-	if (IS_ERR(dentry)) {
1406
-		ret = PTR_ERR(dentry);
1407
-		goto cleanup;
1408
-	}
1409
-
1410
-	dentry = debugfs_create_file("rsq_primary", S_IRUGO,
1411
-				     radio->debugfs, radio,
1412
-				     &radio_rsq_primary_fops);
1413
-	if (IS_ERR(dentry)) {
1414
-		ret = PTR_ERR(dentry);
1415
-		goto cleanup;
1416
-	}
1417
-
1418
-	return 0;
1419
-cleanup:
1420
-	debugfs_remove_recursive(radio->debugfs);
1421
-exit:
1422
-	return ret;
1364
+	debugfs_create_file("rsq_primary", S_IRUGO, radio->debugfs, radio,
1365
+			    &radio_rsq_primary_fops);
14231366 }
14241367 
14251368 
....@@ -1468,6 +1411,14 @@
14681411 
14691412 	radio->videodev.v4l2_dev  = &radio->v4l2dev;
14701413 	radio->videodev.ioctl_ops = &si4761_ioctl_ops;
1414
+	radio->videodev.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO |
1415
+				      V4L2_CAP_HW_FREQ_SEEK;
1416
+
1417
+	si476x_core_lock(radio->core);
1418
+	if (!si476x_core_is_a_secondary_tuner(radio->core))
1419
+		radio->videodev.device_caps |= V4L2_CAP_RDS_CAPTURE |
1420
+					       V4L2_CAP_READWRITE;
1421
+	si476x_core_unlock(radio->core);
14711422 
14721423 	video_set_drvdata(&radio->videodev, radio);
14731424 	platform_set_drvdata(pdev, radio);
....@@ -1548,11 +1499,7 @@
15481499 		goto exit;
15491500 	}
15501501 
1551
-	rval = si476x_radio_init_debugfs(radio);
1552
-	if (rval < 0) {
1553
-		dev_err(&pdev->dev, "Could not creat debugfs interface\n");
1554
-		goto exit;
1555
-	}
1502
+	si476x_radio_init_debugfs(radio);
15561503 
15571504 	return 0;
15581505 exit: