add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/sound/sh/sh_dac_audio.c
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@@ -1,25 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * sh_dac_audio.c - SuperH DAC audio driver for ALSA
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  *
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  * Copyright (c) 2009 by Rafael Ignacio Zurita <rizurita@yahoo.com>
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  *
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- *
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  * Based on sh_dac_audio.c (Copyright (C) 2004, 2005 by Andriy Skulysh)
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- *
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- *   This program is free software; you can redistribute it and/or modify
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- *   it under the terms of the GNU General Public License as published by
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- *   the Free Software Foundation; either version 2 of the License, or
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- *   (at your option) any later version.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
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- *
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- *   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
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- *
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  */
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 #include <linux/hrtimer.h>
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@@ -140,18 +125,6 @@
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 	return 0;
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 }
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-static int snd_sh_dac_pcm_hw_params(struct snd_pcm_substream *substream,
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-				struct snd_pcm_hw_params *hw_params)
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-{
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-	return snd_pcm_lib_malloc_pages(substream,
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-			params_buffer_bytes(hw_params));
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-}
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-
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-static int snd_sh_dac_pcm_hw_free(struct snd_pcm_substream *substream)
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-{
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-	return snd_pcm_lib_free_pages(substream);
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-}
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-
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 static int snd_sh_dac_pcm_prepare(struct snd_pcm_substream *substream)
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 {
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 	struct snd_sh_dac *chip = snd_pcm_substream_chip(substream);
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@@ -252,9 +225,6 @@
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 static const struct snd_pcm_ops snd_sh_dac_pcm_ops = {
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 	.open		= snd_sh_dac_pcm_open,
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 	.close		= snd_sh_dac_pcm_close,
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-	.ioctl		= snd_pcm_lib_ioctl,
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-	.hw_params	= snd_sh_dac_pcm_hw_params,
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-	.hw_free	= snd_sh_dac_pcm_hw_free,
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 	.prepare	= snd_sh_dac_pcm_prepare,
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 	.trigger	= snd_sh_dac_pcm_trigger,
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 	.pointer	= snd_sh_dac_pcm_pointer,
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@@ -279,10 +249,8 @@
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 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sh_dac_pcm_ops);
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 	/* buffer size=48K */
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-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
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-					  snd_dma_continuous_data(GFP_KERNEL),
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-							48 * 1024,
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-							48 * 1024);
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+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
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+				       NULL, 48 * 1024, 48 * 1024);
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 	return 0;
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 }
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@@ -354,7 +322,7 @@
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 	struct snd_sh_dac *chip;
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 	int err;
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-	static struct snd_device_ops ops = {
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+	static const struct snd_device_ops ops = {
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 		   .dev_free = snd_sh_dac_dev_free,
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 	};
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