1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * ALSA SoC SPDIF DIT driver 3 * ALSA SoC SPDIF DIT driver
4 * 4 *
5 * This driver is used by controllers which c 5 * This driver is used by controllers which can operate in DIT (SPDI/F) where
6 * no codec is needed. This file provides st 6 * no codec is needed. This file provides stub codec that can be used
7 * in these configurations. TI DaVinci Audio 7 * in these configurations. TI DaVinci Audio controller uses this driver.
8 * 8 *
9 * Author: Steve Chen, <schen@mvista.com 9 * Author: Steve Chen, <schen@mvista.com>
10 * Copyright: (C) 2009 MontaVista Software, 10 * Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com>
11 * Copyright: (C) 2009 Texas Instruments, I 11 * Copyright: (C) 2009 Texas Instruments, India
12 */ 12 */
13 13
14 #include <linux/module.h> 14 #include <linux/module.h>
15 #include <linux/moduleparam.h> 15 #include <linux/moduleparam.h>
16 #include <linux/slab.h> 16 #include <linux/slab.h>
17 #include <sound/soc.h> 17 #include <sound/soc.h>
18 #include <sound/pcm.h> 18 #include <sound/pcm.h>
19 #include <sound/initval.h> 19 #include <sound/initval.h>
20 #include <linux/of.h> 20 #include <linux/of.h>
21 21
22 #define DRV_NAME "spdif-dit" 22 #define DRV_NAME "spdif-dit"
23 23
24 #define STUB_RATES (SNDRV_PCM_RATE_8000_7 24 #define STUB_RATES (SNDRV_PCM_RATE_8000_768000 | \
25 SNDRV_PCM_RATE_128000 25 SNDRV_PCM_RATE_128000)
26 #define STUB_FORMATS (SNDRV_PCM_FMTBIT_S16_ 26 #define STUB_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
27 SNDRV_PCM_FMTBIT_S20_3 27 SNDRV_PCM_FMTBIT_S20_3LE | \
28 SNDRV_PCM_FMTBIT_S24_L 28 SNDRV_PCM_FMTBIT_S24_LE | \
29 SNDRV_PCM_FMTBIT_S32_L 29 SNDRV_PCM_FMTBIT_S32_LE)
30 30
31 static const struct snd_soc_dapm_widget dit_wi 31 static const struct snd_soc_dapm_widget dit_widgets[] = {
32 SND_SOC_DAPM_OUTPUT("spdif-out"), 32 SND_SOC_DAPM_OUTPUT("spdif-out"),
33 }; 33 };
34 34
35 static const struct snd_soc_dapm_route dit_rou 35 static const struct snd_soc_dapm_route dit_routes[] = {
36 { "spdif-out", NULL, "Playback" }, 36 { "spdif-out", NULL, "Playback" },
37 }; 37 };
38 38
39 static struct snd_soc_component_driver soc_cod 39 static struct snd_soc_component_driver soc_codec_spdif_dit = {
40 .dapm_widgets = dit_widgets, 40 .dapm_widgets = dit_widgets,
41 .num_dapm_widgets = ARRAY_SIZE(d 41 .num_dapm_widgets = ARRAY_SIZE(dit_widgets),
42 .dapm_routes = dit_routes, 42 .dapm_routes = dit_routes,
43 .num_dapm_routes = ARRAY_SIZE(d 43 .num_dapm_routes = ARRAY_SIZE(dit_routes),
44 .idle_bias_on = 1, 44 .idle_bias_on = 1,
45 .use_pmdown_time = 1, 45 .use_pmdown_time = 1,
46 .endianness = 1, 46 .endianness = 1,
47 }; 47 };
48 48
49 static struct snd_soc_dai_driver dit_stub_dai 49 static struct snd_soc_dai_driver dit_stub_dai = {
50 .name = "dit-hifi", 50 .name = "dit-hifi",
51 .playback = { 51 .playback = {
52 .stream_name = "Playback", 52 .stream_name = "Playback",
53 .channels_min = 1, 53 .channels_min = 1,
54 .channels_max = 384, 54 .channels_max = 384,
55 .rates = STUB_RATES, 55 .rates = STUB_RATES,
56 .formats = STUB_FORMATS 56 .formats = STUB_FORMATS,
57 }, 57 },
58 }; 58 };
59 59
60 static int spdif_dit_probe(struct platform_dev 60 static int spdif_dit_probe(struct platform_device *pdev)
61 { 61 {
62 return devm_snd_soc_register_component 62 return devm_snd_soc_register_component(&pdev->dev,
63 &soc_codec_spdif_dit, 63 &soc_codec_spdif_dit,
64 &dit_stub_dai, 1); 64 &dit_stub_dai, 1);
65 } 65 }
66 66
67 #ifdef CONFIG_OF 67 #ifdef CONFIG_OF
68 static const struct of_device_id spdif_dit_dt_ 68 static const struct of_device_id spdif_dit_dt_ids[] = {
69 { .compatible = "linux,spdif-dit", }, 69 { .compatible = "linux,spdif-dit", },
70 { } 70 { }
71 }; 71 };
72 MODULE_DEVICE_TABLE(of, spdif_dit_dt_ids); 72 MODULE_DEVICE_TABLE(of, spdif_dit_dt_ids);
73 #endif 73 #endif
74 74
75 static struct platform_driver spdif_dit_driver 75 static struct platform_driver spdif_dit_driver = {
76 .probe = spdif_dit_probe, 76 .probe = spdif_dit_probe,
77 .driver = { 77 .driver = {
78 .name = DRV_NAME, 78 .name = DRV_NAME,
79 .of_match_table = of_match_ptr 79 .of_match_table = of_match_ptr(spdif_dit_dt_ids),
80 }, 80 },
81 }; 81 };
82 82
83 module_platform_driver(spdif_dit_driver); 83 module_platform_driver(spdif_dit_driver);
84 84
85 MODULE_AUTHOR("Steve Chen <schen@mvista.com>") 85 MODULE_AUTHOR("Steve Chen <schen@mvista.com>");
86 MODULE_DESCRIPTION("SPDIF dummy codec driver") 86 MODULE_DESCRIPTION("SPDIF dummy codec driver");
87 MODULE_LICENSE("GPL"); 87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("platform:" DRV_NAME); 88 MODULE_ALIAS("platform:" DRV_NAME);
89 89
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