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e6b5be2be4
Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM 53kAoLeteByQ3iVwWurwwseRPiWa8+MI =OVRS -----END PGP SIGNATURE----- Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/*
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* ac97.c -- ALSA Soc AC97 codec support
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Generic AC97 support.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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static const struct snd_soc_dapm_widget ac97_widgets[] = {
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SND_SOC_DAPM_INPUT("RX"),
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SND_SOC_DAPM_OUTPUT("TX"),
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};
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static const struct snd_soc_dapm_route ac97_routes[] = {
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{ "AC97 Capture", NULL, "RX" },
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{ "TX", NULL, "AC97 Playback" },
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};
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static int ac97_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
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int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
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AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
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return snd_ac97_set_rate(ac97, reg, substream->runtime->rate);
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}
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#define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 |\
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SNDRV_PCM_RATE_48000)
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static const struct snd_soc_dai_ops ac97_dai_ops = {
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.prepare = ac97_prepare,
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};
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static struct snd_soc_dai_driver ac97_dai = {
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.name = "ac97-hifi",
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.playback = {
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.stream_name = "AC97 Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = STD_AC97_RATES,
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.formats = SND_SOC_STD_AC97_FMTS,},
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.capture = {
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.stream_name = "AC97 Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = STD_AC97_RATES,
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.formats = SND_SOC_STD_AC97_FMTS,},
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.ops = &ac97_dai_ops,
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};
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static int ac97_soc_probe(struct snd_soc_codec *codec)
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{
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struct snd_ac97 *ac97;
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struct snd_ac97_bus *ac97_bus;
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struct snd_ac97_template ac97_template;
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int ret;
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/* add codec as bus device for standard ac97 */
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ret = snd_ac97_bus(codec->component.card->snd_card, 0, soc_ac97_ops,
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NULL, &ac97_bus);
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if (ret < 0)
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return ret;
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memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
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ret = snd_ac97_mixer(ac97_bus, &ac97_template, &ac97);
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if (ret < 0)
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return ret;
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snd_soc_codec_set_drvdata(codec, ac97);
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return 0;
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}
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#ifdef CONFIG_PM
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static int ac97_soc_suspend(struct snd_soc_codec *codec)
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{
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struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
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snd_ac97_suspend(ac97);
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return 0;
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}
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static int ac97_soc_resume(struct snd_soc_codec *codec)
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{
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struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
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snd_ac97_resume(ac97);
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return 0;
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}
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#else
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#define ac97_soc_suspend NULL
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#define ac97_soc_resume NULL
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#endif
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static struct snd_soc_codec_driver soc_codec_dev_ac97 = {
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.probe = ac97_soc_probe,
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.suspend = ac97_soc_suspend,
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.resume = ac97_soc_resume,
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.dapm_widgets = ac97_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ac97_widgets),
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.dapm_routes = ac97_routes,
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.num_dapm_routes = ARRAY_SIZE(ac97_routes),
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};
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static int ac97_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev,
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&soc_codec_dev_ac97, &ac97_dai, 1);
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}
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static int ac97_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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}
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static struct platform_driver ac97_codec_driver = {
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.driver = {
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.name = "ac97-codec",
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},
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.probe = ac97_probe,
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.remove = ac97_remove,
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};
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module_platform_driver(ac97_codec_driver);
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MODULE_DESCRIPTION("Soc Generic AC97 driver");
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MODULE_AUTHOR("Liam Girdwood");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:ac97-codec");
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