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2024-05-16 8d2a02b24d66aa359e83eebc1ed3c0f85367a1cb 
 kernel/sound/atmel/ac97c.c
....@@ -1,11 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Driver for Atmel AC97C
34  *
45  * Copyright (C) 2005-2009 Atmel Corporation
5
- *
6
- * This program is free software; you can redistribute it and/or modify it
7
- * under the terms of the GNU General Public License version 2 as published by
8
- * the Free Software Foundation.
96  */
107 #include <linux/clk.h>
118 #include <linux/delay.h>
....@@ -162,12 +159,6 @@
162159 		struct snd_pcm_hw_params *hw_params)
163160 {
164161 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
165
-	int retval;
166
-
167
-	retval = snd_pcm_lib_malloc_pages(substream,
168
-					params_buffer_bytes(hw_params));
169
-	if (retval < 0)
170
-		return retval;
171162 
172163 	/* Set restrictions to params. */
173164 	mutex_lock(&opened_mutex);
....@@ -175,19 +166,13 @@
175166 	chip->cur_format = params_format(hw_params);
176167 	mutex_unlock(&opened_mutex);
177168 
178
-	return retval;
169
+	return 0;
179170 }
180171 
181172 static int atmel_ac97c_capture_hw_params(struct snd_pcm_substream *substream,
182173 		struct snd_pcm_hw_params *hw_params)
183174 {
184175 	struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
185
-	int retval;
186
-
187
-	retval = snd_pcm_lib_malloc_pages(substream,
188
-					params_buffer_bytes(hw_params));
189
-	if (retval < 0)
190
-		return retval;
191176 
192177 	/* Set restrictions to params. */
193178 	mutex_lock(&opened_mutex);
....@@ -195,7 +180,7 @@
195180 	chip->cur_format = params_format(hw_params);
196181 	mutex_unlock(&opened_mutex);
197182 
198
-	return retval;
183
+	return 0;
199184 }
200185 
201186 static int atmel_ac97c_playback_prepare(struct snd_pcm_substream *substream)
....@@ -234,7 +219,7 @@
234219 	switch (runtime->format) {
235220 	case SNDRV_PCM_FORMAT_S16_LE:
236221 		break;
237
-	case SNDRV_PCM_FORMAT_S16_BE: /* fall through */
222
+	case SNDRV_PCM_FORMAT_S16_BE:
238223 		word &= ~(AC97C_CMR_CEM_LITTLE);
239224 		break;
240225 	default:
....@@ -316,7 +301,7 @@
316301 	switch (runtime->format) {
317302 	case SNDRV_PCM_FORMAT_S16_LE:
318303 		break;
319
-	case SNDRV_PCM_FORMAT_S16_BE: /* fall through */
304
+	case SNDRV_PCM_FORMAT_S16_BE:
320305 		word &= ~(AC97C_CMR_CEM_LITTLE);
321306 		break;
322307 	default:
....@@ -371,14 +356,14 @@
371356 	camr = ac97c_readl(chip, CAMR);
372357 
373358 	switch (cmd) {
374
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
375
-	case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
359
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
360
+	case SNDRV_PCM_TRIGGER_RESUME:
376361 	case SNDRV_PCM_TRIGGER_START:
377362 		ptcr = ATMEL_PDC_TXTEN;
378363 		camr |= AC97C_CMR_CENA | AC97C_CSR_ENDTX;
379364 		break;
380
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
381
-	case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
365
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
366
+	case SNDRV_PCM_TRIGGER_SUSPEND:
382367 	case SNDRV_PCM_TRIGGER_STOP:
383368 		ptcr |= ATMEL_PDC_TXTDIS;
384369 		if (chip->opened <= 1)
....@@ -403,14 +388,14 @@
403388 	ptcr = readl(chip->regs + ATMEL_PDC_PTSR);
404389 
405390 	switch (cmd) {
406
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
407
-	case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
391
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
392
+	case SNDRV_PCM_TRIGGER_RESUME:
408393 	case SNDRV_PCM_TRIGGER_START:
409394 		ptcr = ATMEL_PDC_RXTEN;
410395 		camr |= AC97C_CMR_CENA | AC97C_CSR_ENDRX;
411396 		break;
412
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
413
-	case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
397
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
398
+	case SNDRV_PCM_TRIGGER_SUSPEND:
414399 	case SNDRV_PCM_TRIGGER_STOP:
415400 		ptcr |= ATMEL_PDC_RXTDIS;
416401 		if (chip->opened <= 1)
....@@ -462,9 +447,7 @@
462447 static const struct snd_pcm_ops atmel_ac97_playback_ops = {
463448 	.open		= atmel_ac97c_playback_open,
464449 	.close		= atmel_ac97c_playback_close,
465
-	.ioctl		= snd_pcm_lib_ioctl,
466450 	.hw_params	= atmel_ac97c_playback_hw_params,
467
-	.hw_free	= snd_pcm_lib_free_pages,
468451 	.prepare	= atmel_ac97c_playback_prepare,
469452 	.trigger	= atmel_ac97c_playback_trigger,
470453 	.pointer	= atmel_ac97c_playback_pointer,
....@@ -473,9 +456,7 @@
473456 static const struct snd_pcm_ops atmel_ac97_capture_ops = {
474457 	.open		= atmel_ac97c_capture_open,
475458 	.close		= atmel_ac97c_capture_close,
476
-	.ioctl		= snd_pcm_lib_ioctl,
477459 	.hw_params	= atmel_ac97c_capture_hw_params,
478
-	.hw_free	= snd_pcm_lib_free_pages,
479460 	.prepare	= atmel_ac97c_capture_prepare,
480461 	.trigger	= atmel_ac97c_capture_trigger,
481462 	.pointer	= atmel_ac97c_capture_pointer,
....@@ -494,12 +475,12 @@
494475 		struct snd_pcm_runtime *runtime;
495476 		int offset, next_period, block_size;
496477 		dev_dbg(&chip->pdev->dev, "channel A event%s%s%s%s%s%s\n",
497
-				casr & AC97C_CSR_OVRUN   ? " OVRUN"   : "",
498
-				casr & AC97C_CSR_RXRDY   ? " RXRDY"   : "",
499
-				casr & AC97C_CSR_UNRUN   ? " UNRUN"   : "",
500
-				casr & AC97C_CSR_TXEMPTY ? " TXEMPTY" : "",
501
-				casr & AC97C_CSR_TXRDY   ? " TXRDY"   : "",
502
-				!casr                    ? " NONE"    : "");
478
+			(casr & AC97C_CSR_OVRUN)   ? " OVRUN"   : "",
479
+			(casr & AC97C_CSR_RXRDY)   ? " RXRDY"   : "",
480
+			(casr & AC97C_CSR_UNRUN)   ? " UNRUN"   : "",
481
+			(casr & AC97C_CSR_TXEMPTY) ? " TXEMPTY" : "",
482
+			(casr & AC97C_CSR_TXRDY)   ? " TXRDY"   : "",
483
+			!casr                      ? " NONE"    : "");
503484 		if ((casr & camr) & AC97C_CSR_ENDTX) {
504485 			runtime = chip->playback_substream->runtime;
505486 			block_size = frames_to_bytes(runtime, runtime->period_size);
....@@ -540,11 +521,11 @@
540521 
541522 	if (sr & AC97C_SR_COEVT) {
542523 		dev_info(&chip->pdev->dev, "codec channel event%s%s%s%s%s\n",
543
-				cosr & AC97C_CSR_OVRUN   ? " OVRUN"   : "",
544
-				cosr & AC97C_CSR_RXRDY   ? " RXRDY"   : "",
545
-				cosr & AC97C_CSR_TXEMPTY ? " TXEMPTY" : "",
546
-				cosr & AC97C_CSR_TXRDY   ? " TXRDY"   : "",
547
-				!cosr                    ? " NONE"    : "");
524
+			 (cosr & AC97C_CSR_OVRUN)   ? " OVRUN"   : "",
525
+			 (cosr & AC97C_CSR_RXRDY)   ? " RXRDY"   : "",
526
+			 (cosr & AC97C_CSR_TXEMPTY) ? " TXEMPTY" : "",
527
+			 (cosr & AC97C_CSR_TXRDY)   ? " TXRDY"   : "",
528
+			 !cosr                      ? " NONE"    : "");
548529 		retval = IRQ_HANDLED;
549530 	}
550531 
....@@ -603,11 +584,9 @@
603584 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &atmel_ac97_capture_ops);
604585 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &atmel_ac97_playback_ops);
605586 
606
-	retval = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
587
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
607588 			&chip->pdev->dev, hw.periods_min * hw.period_bytes_min,
608589 			hw.buffer_bytes_max);
609
-	if (retval)
610
-		return retval;
611590 
612591 	pcm->private_data = chip;
613592 	pcm->info_flags = 0;
....@@ -723,7 +702,7 @@
723702 	struct atmel_ac97c		*chip;
724703 	struct resource			*regs;
725704 	struct clk			*pclk;
726
-	static struct snd_ac97_bus_ops	ops = {
705
+	static const struct snd_ac97_bus_ops	ops = {
727706 		.write	= atmel_ac97c_write,
728707 		.read	= atmel_ac97c_read,
729708 	};