1 // SPDX-License-Identifier: GPL-2.0-or-later <<
2 /* 1 /*
3 * Copyright (C) 2011 Freescale Semiconductor, 2 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
4 * 3 *
5 * Based on sound/soc/imx/imx-pcm-dma-mx2.c 4 * Based on sound/soc/imx/imx-pcm-dma-mx2.c
>> 5 *
>> 6 * This program is free software; you can redistribute it and/or modify
>> 7 * it under the terms of the GNU General Public License as published by
>> 8 * the Free Software Foundation; either version 2 of the License, or
>> 9 * (at your option) any later version.
>> 10 *
>> 11 * This program is distributed in the hope that it will be useful,
>> 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> 14 * GNU General Public License for more details.
>> 15 *
>> 16 * You should have received a copy of the GNU General Public License along
>> 17 * with this program; if not, write to the Free Software Foundation, Inc.,
>> 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
6 */ 19 */
7 20
8 #include <linux/device.h> 21 #include <linux/device.h>
9 #include <linux/init.h> 22 #include <linux/init.h>
10 #include <linux/module.h> 23 #include <linux/module.h>
11 24
12 #include <sound/core.h> 25 #include <sound/core.h>
13 #include <sound/pcm.h> 26 #include <sound/pcm.h>
14 #include <sound/soc.h> 27 #include <sound/soc.h>
15 #include <sound/dmaengine_pcm.h> 28 #include <sound/dmaengine_pcm.h>
16 29
17 #include "mxs-pcm.h" 30 #include "mxs-pcm.h"
18 31
19 static const struct snd_pcm_hardware snd_mxs_h 32 static const struct snd_pcm_hardware snd_mxs_hardware = {
20 .info = SNDRV_PCM_IN 33 .info = SNDRV_PCM_INFO_MMAP |
21 SNDRV_PCM_IN 34 SNDRV_PCM_INFO_MMAP_VALID |
22 SNDRV_PCM_IN 35 SNDRV_PCM_INFO_PAUSE |
23 SNDRV_PCM_IN 36 SNDRV_PCM_INFO_RESUME |
24 SNDRV_PCM_IN 37 SNDRV_PCM_INFO_INTERLEAVED |
25 SNDRV_PCM_IN 38 SNDRV_PCM_INFO_HALF_DUPLEX,
>> 39 .formats = SNDRV_PCM_FMTBIT_S16_LE |
>> 40 SNDRV_PCM_FMTBIT_S20_3LE |
>> 41 SNDRV_PCM_FMTBIT_S24_LE,
>> 42 .channels_min = 2,
>> 43 .channels_max = 2,
26 .period_bytes_min = 32, 44 .period_bytes_min = 32,
27 .period_bytes_max = 8192, 45 .period_bytes_max = 8192,
28 .periods_min = 1, 46 .periods_min = 1,
29 .periods_max = 52, 47 .periods_max = 52,
30 .buffer_bytes_max = 64 * 1024, 48 .buffer_bytes_max = 64 * 1024,
31 .fifo_size = 32, 49 .fifo_size = 32,
32 }; 50 };
33 51
>> 52 static bool filter(struct dma_chan *chan, void *param)
>> 53 {
>> 54 struct mxs_pcm_dma_params *dma_params = param;
>> 55
>> 56 if (!mxs_dma_is_apbx(chan))
>> 57 return false;
>> 58
>> 59 if (chan->chan_id != dma_params->chan_num)
>> 60 return false;
>> 61
>> 62 chan->private = &dma_params->dma_data;
>> 63
>> 64 return true;
>> 65 }
>> 66
34 static const struct snd_dmaengine_pcm_config m 67 static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
35 .pcm_hardware = &snd_mxs_hardware, 68 .pcm_hardware = &snd_mxs_hardware,
>> 69 .compat_filter_fn = filter,
36 .prealloc_buffer_size = 64 * 1024, 70 .prealloc_buffer_size = 64 * 1024,
37 }; 71 };
38 72
39 int mxs_pcm_platform_register(struct device *d 73 int mxs_pcm_platform_register(struct device *dev)
40 { 74 {
41 return devm_snd_dmaengine_pcm_register !! 75 return snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
>> 76 SND_DMAENGINE_PCM_FLAG_NO_RESIDUE |
>> 77 SND_DMAENGINE_PCM_FLAG_NO_DT |
>> 78 SND_DMAENGINE_PCM_FLAG_COMPAT |
42 SND_DMAENGINE_PCM_FLAG_HALF_DU 79 SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
43 } 80 }
44 EXPORT_SYMBOL_GPL(mxs_pcm_platform_register); 81 EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
45 82
46 MODULE_DESCRIPTION("MXS ASoC PCM driver"); !! 83 void mxs_pcm_platform_unregister(struct device *dev)
>> 84 {
>> 85 snd_dmaengine_pcm_unregister(dev);
>> 86 }
>> 87 EXPORT_SYMBOL_GPL(mxs_pcm_platform_unregister);
>> 88
47 MODULE_LICENSE("GPL"); 89 MODULE_LICENSE("GPL");
48 90
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