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