Jerome Brunet | 9000b59 | 2017-02-27 16:47:23 +0100 | [diff] [blame] | 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 | |
Bhumika Goyal | a180ba4 | 2017-08-03 21:30:19 +0530 | [diff] [blame] | 72 | static const struct snd_soc_codec_driver es7134_codec_driver = { |
Jerome Brunet | 9000b59 | 2017-02-27 16:47:23 +0100 | [diff] [blame] | 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"); |