projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2dcf9fb9 GG |
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> | |
| 5a0e3ad6 | 14 | #include <linux/slab.h> |
| 2dcf9fb9 GG |
15 | #include <linux/init.h> |
| 16 | #include <linux/device.h> | |
| da155d5b | 17 | #include <linux/module.h> |
| 2dcf9fb9 GG |
18 | #include <sound/core.h> |
| 19 | #include <sound/pcm.h> | |
| 20 | #include <sound/initval.h> | |
| 21 | #include <sound/soc.h> | |
| 22 | ||
| 4f2bf0ac FV |
23 | #include <linux/of.h> |
| 24 | ||
| 2dcf9fb9 | 25 | #define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000) |
| 2dcf9fb9 GG |
26 | #define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) |
| 27 | ||
| 45a14a8b MB |
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 | ||
| f0fba2ad | 50 | static struct snd_soc_dai_driver ads117x_dai = { |
| 2dcf9fb9 | 51 | /* ADC */ |
| f0fba2ad | 52 | .name = "ads117x-hifi", |
| 2dcf9fb9 GG |
53 | .capture = { |
| 54 | .stream_name = "Capture", | |
| 55 | .channels_min = 1, | |
| 56 | .channels_max = 32, | |
| 57 | .rates = ADS117X_RATES, | |
| 58 | .formats = ADS117X_FORMATS,}, | |
| 59 | }; | |
| 2dcf9fb9 | 60 | |
| 45a14a8b | 61 | static struct snd_soc_codec_driver soc_codec_dev_ads117x = { |
| 940b816f KM |
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 | }, | |
| 45a14a8b | 68 | }; |
| 2dcf9fb9 | 69 | |
| 7a79e94e | 70 | static int ads117x_probe(struct platform_device *pdev) |
| 2dcf9fb9 | 71 | { |
| f0fba2ad LG |
72 | return snd_soc_register_codec(&pdev->dev, |
| 73 | &soc_codec_dev_ads117x, &ads117x_dai, 1); | |
| 2dcf9fb9 | 74 | } |
| 2dcf9fb9 | 75 | |
| 7a79e94e | 76 | static int ads117x_remove(struct platform_device *pdev) |
| 2dcf9fb9 | 77 | { |
| f0fba2ad | 78 | snd_soc_unregister_codec(&pdev->dev); |
| f3d0e82f MB |
79 | return 0; |
| 80 | } | |
| 81 | ||
| 4f2bf0ac FV |
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 | ||
| f3d0e82f MB |
91 | static struct platform_driver ads117x_codec_driver = { |
| 92 | .driver = { | |
| f0fba2ad | 93 | .name = "ads117x-codec", |
| 4f2bf0ac | 94 | .of_match_table = of_match_ptr(ads117x_dt_ids), |
| f3d0e82f MB |
95 | }, |
| 96 | ||
| f0fba2ad | 97 | .probe = ads117x_probe, |
| 7a79e94e | 98 | .remove = ads117x_remove, |
| f3d0e82f MB |
99 | }; |
| 100 | ||
| 5bbcc3c0 | 101 | module_platform_driver(ads117x_codec_driver); |
| 2dcf9fb9 GG |
102 | |
| 103 | MODULE_DESCRIPTION("ASoC ads117x driver"); | |
| 104 | MODULE_AUTHOR("Graeme Gregory"); | |
| 105 | MODULE_LICENSE("GPL"); |