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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb 
 kernel/sound/drivers/dummy.c
....@@ -1,21 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *  Dummy soundcard
34  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4
- *
5
- *   This program is free software; you can redistribute it and/or modify
6
- *   it under the terms of the GNU General Public License as published by
7
- *   the Free Software Foundation; either version 2 of the License, or
8
- *   (at your option) any later version.
9
- *
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- *   This program is distributed in the hope that it will be useful,
11
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
12
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
14
- *
15
- *   You should have received a copy of the GNU General Public License
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- *   along with this program; if not, write to the Free Software
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- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
18
- *
195  */
206 
217 #include <linux/init.h>
....@@ -131,7 +117,7 @@
131117 
132118 struct snd_dummy {
133119 	struct snd_card *card;
134
-	struct dummy_model *model;
120
+	const struct dummy_model *model;
135121 	struct snd_pcm *pcm;
136122 	struct snd_pcm_hardware pcm_hw;
137123 	spinlock_t mixer_lock;
....@@ -158,13 +144,13 @@
158144 	return 0;
159145 }
160146 
161
-static struct dummy_model model_emu10k1 = {
147
+static const struct dummy_model model_emu10k1 = {
162148 	.name = "emu10k1",
163149 	.playback_constraints = emu10k1_playback_constraints,
164150 	.buffer_bytes_max = 128 * 1024,
165151 };
166152 
167
-static struct dummy_model model_rme9652 = {
153
+static const struct dummy_model model_rme9652 = {
168154 	.name = "rme9652",
169155 	.buffer_bytes_max = 26 * 64 * 1024,
170156 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
....@@ -174,7 +160,7 @@
174160 	.periods_max = 2,
175161 };
176162 
177
-static struct dummy_model model_ice1712 = {
163
+static const struct dummy_model model_ice1712 = {
178164 	.name = "ice1712",
179165 	.buffer_bytes_max = 256 * 1024,
180166 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
....@@ -184,7 +170,7 @@
184170 	.periods_max = 1024,
185171 };
186172 
187
-static struct dummy_model model_uda1341 = {
173
+static const struct dummy_model model_uda1341 = {
188174 	.name = "uda1341",
189175 	.buffer_bytes_max = 16380,
190176 	.formats = SNDRV_PCM_FMTBIT_S16_LE,
....@@ -194,7 +180,7 @@
194180 	.periods_max = 255,
195181 };
196182 
197
-static struct dummy_model model_ac97 = {
183
+static const struct dummy_model model_ac97 = {
198184 	.name = "ac97",
199185 	.formats = SNDRV_PCM_FMTBIT_S16_LE,
200186 	.channels_min = 2,
....@@ -204,7 +190,7 @@
204190 	.rate_max = 48000,
205191 };
206192 
207
-static struct dummy_model model_ca0106 = {
193
+static const struct dummy_model model_ca0106 = {
208194 	.name = "ca0106",
209195 	.formats = SNDRV_PCM_FMTBIT_S16_LE,
210196 	.buffer_bytes_max = ((65536-64)*8),
....@@ -218,7 +204,7 @@
218204 	.rate_max = 192000,
219205 };
220206 
221
-static struct dummy_model *dummy_models[] = {
207
+static const struct dummy_model *dummy_models[] = {
222208 	&model_emu10k1,
223209 	&model_rme9652,
224210 	&model_ice1712,
....@@ -543,21 +529,13 @@
543529 		substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
544530 		return 0;
545531 	}
546
-	return snd_pcm_lib_malloc_pages(substream,
547
-					params_buffer_bytes(hw_params));
548
-}
549
-
550
-static int dummy_pcm_hw_free(struct snd_pcm_substream *substream)
551
-{
552
-	if (fake_buffer)
553
-		return 0;
554
-	return snd_pcm_lib_free_pages(substream);
532
+	return 0;
555533 }
556534 
557535 static int dummy_pcm_open(struct snd_pcm_substream *substream)
558536 {
559537 	struct snd_dummy *dummy = snd_pcm_substream_chip(substream);
560
-	struct dummy_model *model = dummy->model;
538
+	const struct dummy_model *model = dummy->model;
561539 	struct snd_pcm_runtime *runtime = substream->runtime;
562540 	const struct dummy_timer_ops *ops;
563541 	int err;
....@@ -666,23 +644,19 @@
666644 	return virt_to_page(dummy_page[substream->stream]); /* the same page */
667645 }
668646 
669
-static struct snd_pcm_ops dummy_pcm_ops = {
647
+static const struct snd_pcm_ops dummy_pcm_ops = {
670648 	.open =		dummy_pcm_open,
671649 	.close =	dummy_pcm_close,
672
-	.ioctl =	snd_pcm_lib_ioctl,
673650 	.hw_params =	dummy_pcm_hw_params,
674
-	.hw_free =	dummy_pcm_hw_free,
675651 	.prepare =	dummy_pcm_prepare,
676652 	.trigger =	dummy_pcm_trigger,
677653 	.pointer =	dummy_pcm_pointer,
678654 };
679655 
680
-static struct snd_pcm_ops dummy_pcm_ops_no_buf = {
656
+static const struct snd_pcm_ops dummy_pcm_ops_no_buf = {
681657 	.open =		dummy_pcm_open,
682658 	.close =	dummy_pcm_close,
683
-	.ioctl =	snd_pcm_lib_ioctl,
684659 	.hw_params =	dummy_pcm_hw_params,
685
-	.hw_free =	dummy_pcm_hw_free,
686660 	.prepare =	dummy_pcm_prepare,
687661 	.trigger =	dummy_pcm_trigger,
688662 	.pointer =	dummy_pcm_pointer,
....@@ -696,7 +670,7 @@
696670 			      int substreams)
697671 {
698672 	struct snd_pcm *pcm;
699
-	struct snd_pcm_ops *ops;
673
+	const struct snd_pcm_ops *ops;
700674 	int err;
701675 
702676 	err = snd_pcm_new(dummy->card, "Dummy PCM", device,
....@@ -714,9 +688,9 @@
714688 	pcm->info_flags = 0;
715689 	strcpy(pcm->name, "Dummy PCM");
716690 	if (!fake_buffer) {
717
-		snd_pcm_lib_preallocate_pages_for_all(pcm,
691
+		snd_pcm_set_managed_buffer_all(pcm,
718692 			SNDRV_DMA_TYPE_CONTINUOUS,
719
-			snd_dma_continuous_data(GFP_KERNEL),
693
+			NULL,
720694 			0, 64*1024);
721695 	}
722696 	return 0;
....@@ -875,7 +849,7 @@
875849 	return changed;
876850 }
877851 
878
-static struct snd_kcontrol_new snd_dummy_controls[] = {
852
+static const struct snd_kcontrol_new snd_dummy_controls[] = {
879853 DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER),
880854 DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER),
881855 DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH),
....@@ -927,10 +901,10 @@
927901 static void print_formats(struct snd_dummy *dummy,
928902 			  struct snd_info_buffer *buffer)
929903 {
930
-	int i;
904
+	snd_pcm_format_t i;
931905 
932
-	for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) {
933
-		if (dummy->pcm_hw.formats & (1ULL << i))
906
+	pcm_for_each_format(i) {
907
+		if (dummy->pcm_hw.formats & pcm_format_to_bits(i))
934908 			snd_iprintf(buffer, " %s", snd_pcm_format_name(i));
935909 	}
936910 }
....@@ -938,7 +912,7 @@
938912 static void print_rates(struct snd_dummy *dummy,
939913 			struct snd_info_buffer *buffer)
940914 {
941
-	static int rates[] = {
915
+	static const int rates[] = {
942916 		5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
943917 		64000, 88200, 96000, 176400, 192000,
944918 	};
....@@ -970,7 +944,7 @@
970944 	.offset = offsetof(struct snd_pcm_hardware, item), \
971945 	.size = sizeof(dummy_pcm_hardware.item) }
972946 
973
-static struct dummy_hw_field fields[] = {
947
+static const struct dummy_hw_field fields[] = {
974948 	FIELD_ENTRY(formats, "%#llx"),
975949 	FIELD_ENTRY(rates, "%#x"),
976950 	FIELD_ENTRY(rate_min, "%d"),
....@@ -1037,14 +1011,8 @@
10371011 
10381012 static void dummy_proc_init(struct snd_dummy *chip)
10391013 {
1040
-	struct snd_info_entry *entry;
1041
-
1042
-	if (!snd_card_proc_new(chip->card, "dummy_pcm", &entry)) {
1043
-		snd_info_set_text_ops(entry, chip, dummy_proc_read);
1044
-		entry->c.text.write = dummy_proc_write;
1045
-		entry->mode |= 0200;
1046
-		entry->private_data = chip;
1047
-	}
1014
+	snd_card_rw_proc_new(chip->card, "dummy_pcm", chip,
1015
+			     dummy_proc_read, dummy_proc_write);
10481016 }
10491017 #else
10501018 #define dummy_proc_init(x)
....@@ -1054,7 +1022,7 @@
10541022 {
10551023 	struct snd_card *card;
10561024 	struct snd_dummy *dummy;
1057
-	struct dummy_model *m = NULL, **mdl;
1025
+	const struct dummy_model *m = NULL, **mdl;
10581026 	int idx, err;
10591027 	int dev = devptr->id;
10601028 
....@@ -1138,10 +1106,8 @@
11381106 static int snd_dummy_suspend(struct device *pdev)
11391107 {
11401108 	struct snd_card *card = dev_get_drvdata(pdev);
1141
-	struct snd_dummy *dummy = card->private_data;
11421109 
11431110 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1144
-	snd_pcm_suspend_all(dummy->pcm);
11451111 	return 0;
11461112 }
11471113