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1 | /* |
2 | * Copyright (c) 2017 BayLibre, SAS. | |
3 | * Author: Jerome Brunet <jbrunet@baylibre.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
16 | * The full GNU General Public License is included in this distribution | |
17 | * in the file called COPYING. | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <sound/soc.h> | |
22 | ||
23 | /* | |
24 | * The everest 7134 is a very simple DA converter with no register | |
25 | */ | |
26 | ||
27 | static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) | |
28 | { | |
29 | fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK | | |
30 | SND_SOC_DAIFMT_MASTER_MASK); | |
31 | ||
32 | if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
33 | SND_SOC_DAIFMT_CBS_CFS)) { | |
34 | dev_err(codec_dai->dev, "Invalid DAI format\n"); | |
35 | return -EINVAL; | |
36 | } | |
37 | ||
38 | return 0; | |
39 | } | |
40 | ||
41 | static const struct snd_soc_dai_ops es7134_dai_ops = { | |
42 | .set_fmt = es7134_set_fmt, | |
43 | }; | |
44 | ||
45 | static struct snd_soc_dai_driver es7134_dai = { | |
46 | .name = "es7134-hifi", | |
47 | .playback = { | |
48 | .stream_name = "Playback", | |
49 | .channels_min = 2, | |
50 | .channels_max = 2, | |
51 | .rates = SNDRV_PCM_RATE_8000_192000, | |
52 | .formats = (SNDRV_PCM_FMTBIT_S16_LE | | |
53 | SNDRV_PCM_FMTBIT_S18_3LE | | |
54 | SNDRV_PCM_FMTBIT_S20_3LE | | |
55 | SNDRV_PCM_FMTBIT_S24_3LE | | |
56 | SNDRV_PCM_FMTBIT_S24_LE), | |
57 | }, | |
58 | .ops = &es7134_dai_ops, | |
59 | }; | |
60 | ||
61 | static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = { | |
62 | SND_SOC_DAPM_OUTPUT("AOUTL"), | |
63 | SND_SOC_DAPM_OUTPUT("AOUTR"), | |
64 | SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), | |
65 | }; | |
66 | ||
67 | static const struct snd_soc_dapm_route es7134_dapm_routes[] = { | |
68 | { "AOUTL", NULL, "DAC" }, | |
69 | { "AOUTR", NULL, "DAC" }, | |
70 | }; | |
71 | ||
a180ba45 | 72 | static const struct snd_soc_codec_driver es7134_codec_driver = { |
9000b59d JB |
73 | .component_driver = { |
74 | .dapm_widgets = es7134_dapm_widgets, | |
75 | .num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets), | |
76 | .dapm_routes = es7134_dapm_routes, | |
77 | .num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes), | |
78 | }, | |
79 | }; | |
80 | ||
81 | static int es7134_probe(struct platform_device *pdev) | |
82 | { | |
83 | return snd_soc_register_codec(&pdev->dev, | |
84 | &es7134_codec_driver, | |
85 | &es7134_dai, 1); | |
86 | } | |
87 | ||
88 | static int es7134_remove(struct platform_device *pdev) | |
89 | { | |
90 | snd_soc_unregister_codec(&pdev->dev); | |
91 | return 0; | |
92 | } | |
93 | ||
94 | #ifdef CONFIG_OF | |
95 | static const struct of_device_id es7134_ids[] = { | |
96 | { .compatible = "everest,es7134", }, | |
97 | { .compatible = "everest,es7144", }, | |
98 | { } | |
99 | }; | |
100 | MODULE_DEVICE_TABLE(of, es7134_ids); | |
101 | #endif | |
102 | ||
103 | static struct platform_driver es7134_driver = { | |
104 | .driver = { | |
105 | .name = "es7134", | |
106 | .of_match_table = of_match_ptr(es7134_ids), | |
107 | }, | |
108 | .probe = es7134_probe, | |
109 | .remove = es7134_remove, | |
110 | }; | |
111 | ||
112 | module_platform_driver(es7134_driver); | |
113 | ||
114 | MODULE_DESCRIPTION("ASoC ES7134 audio codec driver"); | |
115 | MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); | |
116 | MODULE_LICENSE("GPL"); |