projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3b7ce997 RW |
1 | /* |
| 2 | * I2S MEMS microphone driver for InvenSense ICS-43432 | |
| 3 | * | |
| 4 | * - Non configurable. | |
| 5 | * - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data | |
| 6 | * | |
| 7 | * Copyright (c) 2015 Axis Communications AB | |
| 8 | * | |
| 2f38bc88 | 9 | * Licensed under GPL v2. |
| 3b7ce997 RW |
10 | */ |
| 11 | ||
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/slab.h> | |
| 15 | #include <sound/core.h> | |
| 16 | #include <sound/pcm.h> | |
| 17 | #include <sound/pcm_params.h> | |
| 18 | #include <sound/soc.h> | |
| 19 | #include <sound/initval.h> | |
| 20 | #include <sound/tlv.h> | |
| 21 | ||
| 22 | #define ICS43432_RATE_MIN 7190 /* Hz, from data sheet */ | |
| 23 | #define ICS43432_RATE_MAX 52800 /* Hz, from data sheet */ | |
| 24 | ||
| 25 | #define ICS43432_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32) | |
| 26 | ||
| 27 | static struct snd_soc_dai_driver ics43432_dai = { | |
| 28 | .name = "ics43432-hifi", | |
| 29 | .capture = { | |
| 30 | .stream_name = "Capture", | |
| 31 | .channels_min = 1, | |
| 32 | .channels_max = 2, | |
| 33 | .rate_min = ICS43432_RATE_MIN, | |
| 34 | .rate_max = ICS43432_RATE_MAX, | |
| 35 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
| 36 | .formats = ICS43432_FORMATS, | |
| 37 | }, | |
| 38 | }; | |
| 39 | ||
| 7c8d9059 KM |
40 | static const struct snd_soc_component_driver ics43432_component_driver = { |
| 41 | .idle_bias_on = 1, | |
| 42 | .use_pmdown_time = 1, | |
| 43 | .endianness = 1, | |
| 44 | .non_legacy_dai_naming = 1, | |
| 3b7ce997 RW |
45 | }; |
| 46 | ||
| 47 | static int ics43432_probe(struct platform_device *pdev) | |
| 48 | { | |
| 7c8d9059 KM |
49 | return devm_snd_soc_register_component(&pdev->dev, |
| 50 | &ics43432_component_driver, | |
| 3b7ce997 RW |
51 | &ics43432_dai, 1); |
| 52 | } | |
| 53 | ||
| 3b7ce997 RW |
54 | #ifdef CONFIG_OF |
| 55 | static const struct of_device_id ics43432_ids[] = { | |
| 56 | { .compatible = "invensense,ics43432", }, | |
| 57 | { } | |
| 58 | }; | |
| b37bfdaa | 59 | MODULE_DEVICE_TABLE(of, ics43432_ids); |
| 3b7ce997 RW |
60 | #endif |
| 61 | ||
| 62 | static struct platform_driver ics43432_driver = { | |
| 63 | .driver = { | |
| 64 | .name = "ics43432", | |
| 3b7ce997 RW |
65 | .of_match_table = of_match_ptr(ics43432_ids), |
| 66 | }, | |
| 67 | .probe = ics43432_probe, | |
| 3b7ce997 RW |
68 | }; |
| 69 | ||
| 70 | module_platform_driver(ics43432_driver); | |
| 71 | ||
| 72 | MODULE_DESCRIPTION("ASoC ICS43432 driver"); | |
| 73 | MODULE_AUTHOR("Ricard Wanderlof <ricardw@axis.com>"); | |
| 2f38bc88 | 74 | MODULE_LICENSE("GPL v2"); |