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5a0e3ad6af
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
185 lines
4.5 KiB
C
185 lines
4.5 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 <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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#include "ac97.h"
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#define AC97_VERSION "0.6"
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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_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_device *socdev = rtd->socdev;
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struct snd_soc_codec *codec = socdev->card->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(codec->ac97, reg, 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 struct snd_soc_dai_ops ac97_dai_ops = {
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.prepare = ac97_prepare,
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};
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struct snd_soc_dai ac97_dai = {
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.name = "AC97 HiFi",
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.ac97_control = 1,
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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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EXPORT_SYMBOL_GPL(ac97_dai);
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static unsigned int ac97_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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return soc_ac97_ops.read(codec->ac97, reg);
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}
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static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int val)
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{
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soc_ac97_ops.write(codec->ac97, reg, val);
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return 0;
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}
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static int ac97_soc_probe(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec;
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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 = 0;
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printk(KERN_INFO "AC97 SoC Audio Codec %s\n", AC97_VERSION);
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socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
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if (!socdev->card->codec)
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return -ENOMEM;
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codec = socdev->card->codec;
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mutex_init(&codec->mutex);
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codec->name = "AC97";
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codec->owner = THIS_MODULE;
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codec->dai = &ac97_dai;
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codec->num_dai = 1;
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codec->write = ac97_write;
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codec->read = ac97_read;
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
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if (ret < 0) {
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printk(KERN_ERR "ASoC: failed to init gen ac97 glue\n");
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goto err;
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}
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/* register pcms */
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0)
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goto err;
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/* add codec as bus device for standard ac97 */
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ret = snd_ac97_bus(codec->card, 0, &soc_ac97_ops, NULL, &ac97_bus);
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if (ret < 0)
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goto bus_err;
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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, &codec->ac97);
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if (ret < 0)
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goto bus_err;
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return 0;
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bus_err:
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snd_soc_free_pcms(socdev);
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err:
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kfree(socdev->card->codec);
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socdev->card->codec = NULL;
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return ret;
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}
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static int ac97_soc_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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if (!codec)
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return 0;
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snd_soc_free_pcms(socdev);
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kfree(socdev->card->codec);
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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 platform_device *pdev, pm_message_t msg)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_ac97_suspend(socdev->card->codec->ac97);
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return 0;
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}
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static int ac97_soc_resume(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_ac97_resume(socdev->card->codec->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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struct snd_soc_codec_device soc_codec_dev_ac97 = {
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.probe = ac97_soc_probe,
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.remove = ac97_soc_remove,
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.suspend = ac97_soc_suspend,
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.resume = ac97_soc_resume,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_ac97);
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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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