diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/soc-utils.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/soc-utils.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/ANDROID_3.4.5/sound/soc/soc-utils.c b/ANDROID_3.4.5/sound/soc/soc-utils.c deleted file mode 100644 index 60053709..00000000 --- a/ANDROID_3.4.5/sound/soc/soc-utils.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * soc-util.c -- ALSA SoC Audio Layer utility functions - * - * Copyright 2009 Wolfson Microelectronics PLC. - * - * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> - * Liam Girdwood <lrg@slimlogic.co.uk> - * - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/platform_device.h> -#include <linux/export.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> - -int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots) -{ - return sample_size * channels * tdm_slots; -} -EXPORT_SYMBOL_GPL(snd_soc_calc_frame_size); - -int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params) -{ - int sample_size; - - sample_size = snd_pcm_format_width(params_format(params)); - if (sample_size < 0) - return sample_size; - - return snd_soc_calc_frame_size(sample_size, params_channels(params), - 1); -} -EXPORT_SYMBOL_GPL(snd_soc_params_to_frame_size); - -int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots) -{ - return fs * snd_soc_calc_frame_size(sample_size, channels, tdm_slots); -} -EXPORT_SYMBOL_GPL(snd_soc_calc_bclk); - -int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params) -{ - int ret; - - ret = snd_soc_params_to_frame_size(params); - - if (ret > 0) - return ret * params_rate(params); - else - return ret; -} -EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk); - -static const struct snd_pcm_hardware dummy_dma_hardware = { - .formats = 0xffffffff, - .channels_min = 1, - .channels_max = UINT_MAX, - - /* Random values to keep userspace happy when checking constraints */ - .info = SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER, - .buffer_bytes_max = 128*1024, - .period_bytes_min = PAGE_SIZE, - .period_bytes_max = PAGE_SIZE*2, - .periods_min = 2, - .periods_max = 128, -}; - -static int dummy_dma_open(struct snd_pcm_substream *substream) -{ - snd_soc_set_runtime_hwparams(substream, &dummy_dma_hardware); - - return 0; -} - -static struct snd_pcm_ops dummy_dma_ops = { - .open = dummy_dma_open, - .ioctl = snd_pcm_lib_ioctl, -}; - -static struct snd_soc_platform_driver dummy_platform = { - .ops = &dummy_dma_ops, -}; - -static struct snd_soc_codec_driver dummy_codec; -static struct snd_soc_dai_driver dummy_dai = { - .name = "snd-soc-dummy-dai", -}; - -static __devinit int snd_soc_dummy_probe(struct platform_device *pdev) -{ - int ret; - - ret = snd_soc_register_codec(&pdev->dev, &dummy_codec, &dummy_dai, 1); - if (ret < 0) - return ret; - - ret = snd_soc_register_platform(&pdev->dev, &dummy_platform); - if (ret < 0) { - snd_soc_unregister_codec(&pdev->dev); - return ret; - } - - return ret; -} - -static __devexit int snd_soc_dummy_remove(struct platform_device *pdev) -{ - snd_soc_unregister_platform(&pdev->dev); - snd_soc_unregister_codec(&pdev->dev); - - return 0; -} - -static struct platform_driver soc_dummy_driver = { - .driver = { - .name = "snd-soc-dummy", - .owner = THIS_MODULE, - }, - .probe = snd_soc_dummy_probe, - .remove = __devexit_p(snd_soc_dummy_remove), -}; - -static struct platform_device *soc_dummy_dev; - -int __init snd_soc_util_init(void) -{ - int ret; - - soc_dummy_dev = platform_device_alloc("snd-soc-dummy", -1); - if (!soc_dummy_dev) - return -ENOMEM; - - ret = platform_device_add(soc_dummy_dev); - if (ret != 0) { - platform_device_put(soc_dummy_dev); - return ret; - } - - ret = platform_driver_register(&soc_dummy_driver); - if (ret != 0) - platform_device_unregister(soc_dummy_dev); - - return ret; -} - -void __exit snd_soc_util_exit(void) -{ - platform_device_unregister(soc_dummy_dev); - platform_driver_unregister(&soc_dummy_driver); -} |