| | 1 | /* |
| | 2 | * ads117x.c -- Driver for ads1174/8 ADC chips |
| | 3 | * |
| | 4 | * Copyright 2009 ShotSpotter Inc. |
| | 5 | * Author: Graeme Gregory <gg@slimlogic.co.uk> |
| | 6 | * |
| | 7 | * This program is free software; you can redistribute it and/or modify it |
| | 8 | * under the terms of the GNU General Public License as published by the |
| | 9 | * Free Software Foundation; either version 2 of the License, or (at your |
| | 10 | * option) any later version. |
| | 11 | */ |
| | 12 | |
| | 13 | #include <linux/kernel.h> |
| | 14 | #include <linux/slab.h> |
| | 15 | #include <linux/init.h> |
| | 16 | #include <linux/device.h> |
| | 17 | #include <linux/module.h> |
| | 18 | #include <sound/core.h> |
| | 19 | #include <sound/pcm.h> |
| | 20 | #include <sound/initval.h> |
| | 21 | #include <sound/soc.h> |
| | 22 | |
| | 23 | #include <linux/of.h> |
| | 24 | |
| | 25 | #define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000) |
| | 26 | #define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) |
| | 27 | |
| | 28 | static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = { |
| | 29 | SND_SOC_DAPM_INPUT("Input1"), |
| | 30 | SND_SOC_DAPM_INPUT("Input2"), |
| | 31 | SND_SOC_DAPM_INPUT("Input3"), |
| | 32 | SND_SOC_DAPM_INPUT("Input4"), |
| | 33 | SND_SOC_DAPM_INPUT("Input5"), |
| | 34 | SND_SOC_DAPM_INPUT("Input6"), |
| | 35 | SND_SOC_DAPM_INPUT("Input7"), |
| | 36 | SND_SOC_DAPM_INPUT("Input8"), |
| | 37 | }; |
| | 38 | |
| | 39 | static const struct snd_soc_dapm_route ads117x_dapm_routes[] = { |
| | 40 | { "Capture", NULL, "Input1" }, |
| | 41 | { "Capture", NULL, "Input2" }, |
| | 42 | { "Capture", NULL, "Input3" }, |
| | 43 | { "Capture", NULL, "Input4" }, |
| | 44 | { "Capture", NULL, "Input5" }, |
| | 45 | { "Capture", NULL, "Input6" }, |
| | 46 | { "Capture", NULL, "Input7" }, |
| | 47 | { "Capture", NULL, "Input8" }, |
| | 48 | }; |
| | 49 | |
| | 50 | static struct snd_soc_dai_driver ads117x_dai = { |
| | 51 | /* ADC */ |
| | 52 | .name = "ads117x-hifi", |
| | 53 | .capture = { |
| | 54 | .stream_name = "Capture", |
| | 55 | .channels_min = 1, |
| | 56 | .channels_max = 32, |
| | 57 | .rates = ADS117X_RATES, |
| | 58 | .formats = ADS117X_FORMATS,}, |
| | 59 | }; |
| | 60 | |
| | 61 | static struct snd_soc_codec_driver soc_codec_dev_ads117x = { |
| | 62 | .component_driver = { |
| | 63 | .dapm_widgets = ads117x_dapm_widgets, |
| | 64 | .num_dapm_widgets = ARRAY_SIZE(ads117x_dapm_widgets), |
| | 65 | .dapm_routes = ads117x_dapm_routes, |
| | 66 | .num_dapm_routes = ARRAY_SIZE(ads117x_dapm_routes), |
| | 67 | }, |
| | 68 | }; |
| | 69 | |
| | 70 | static int ads117x_probe(struct platform_device *pdev) |
| | 71 | { |
| | 72 | return snd_soc_register_codec(&pdev->dev, |
| | 73 | &soc_codec_dev_ads117x, &ads117x_dai, 1); |
| | 74 | } |
| | 75 | |
| | 76 | static int ads117x_remove(struct platform_device *pdev) |
| | 77 | { |
| | 78 | snd_soc_unregister_codec(&pdev->dev); |
| | 79 | return 0; |
| | 80 | } |
| | 81 | |
| | 82 | #if defined(CONFIG_OF) |
| | 83 | static const struct of_device_id ads117x_dt_ids[] = { |
| | 84 | { .compatible = "ti,ads1174" }, |
| | 85 | { .compatible = "ti,ads1178" }, |
| | 86 | { }, |
| | 87 | }; |
| | 88 | MODULE_DEVICE_TABLE(of, ads117x_dt_ids); |
| | 89 | #endif |
| | 90 | |
| | 91 | static struct platform_driver ads117x_codec_driver = { |
| | 92 | .driver = { |
| | 93 | .name = "ads117x-codec", |
| | 94 | .of_match_table = of_match_ptr(ads117x_dt_ids), |
| | 95 | }, |
| | 96 | |
| | 97 | .probe = ads117x_probe, |
| | 98 | .remove = ads117x_remove, |
| | 99 | }; |
| | 100 | |
| | 101 | module_platform_driver(ads117x_codec_driver); |
| | 102 | |
| | 103 | MODULE_DESCRIPTION("ASoC ads117x driver"); |
| | 104 | MODULE_AUTHOR("Graeme Gregory"); |
| | 105 | MODULE_LICENSE("GPL"); |
projects / mirror_ubuntu-zesty-kernel.git / blame_incremental