2019-05-27 00:55:01 -06:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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2006-10-06 10:38:03 -06:00
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/*
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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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2008-10-12 06:17:36 -06:00
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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2006-10-06 10:38:03 -06:00
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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 cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
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>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
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2006-10-06 10:38:03 -06:00
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#include <linux/kernel.h>
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#include <linux/device.h>
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2011-07-15 10:38:28 -06:00
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#include <linux/module.h>
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2006-10-06 10:38:03 -06:00
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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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2013-08-19 05:18:07 -06:00
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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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2008-11-18 15:11:38 -07:00
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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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2006-10-06 10:38:03 -06:00
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{
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2018-01-28 19:58:25 -07:00
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struct snd_soc_component *component = dai->component;
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struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
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2006-10-06 10:38:03 -06:00
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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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2014-11-10 14:41:53 -07:00
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return snd_ac97_set_rate(ac97, reg, substream->runtime->rate);
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2006-10-06 10:38:03 -06:00
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}
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2011-11-23 03:40:40 -07:00
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static const struct snd_soc_dai_ops ac97_dai_ops = {
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2009-03-02 18:41:00 -07:00
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.prepare = ac97_prepare,
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};
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2010-03-17 14:15:21 -06:00
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static struct snd_soc_dai_driver ac97_dai = {
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.name = "ac97-hifi",
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2006-10-06 10:38:03 -06:00
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.playback = {
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.stream_name = "AC97 Playback",
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.channels_min = 1,
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2007-02-02 09:16:41 -07:00
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.channels_max = 2,
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2015-05-09 16:09:57 -06:00
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.rates = SNDRV_PCM_RATE_KNOT,
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2009-05-02 05:24:55 -06:00
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.formats = SND_SOC_STD_AC97_FMTS,},
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2006-10-06 10:38:03 -06:00
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.capture = {
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.stream_name = "AC97 Capture",
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.channels_min = 1,
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2007-02-02 09:16:41 -07:00
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.channels_max = 2,
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2015-05-09 16:09:57 -06:00
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.rates = SNDRV_PCM_RATE_KNOT,
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2009-05-02 05:24:55 -06:00
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.formats = SND_SOC_STD_AC97_FMTS,},
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2009-03-02 18:41:00 -07:00
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.ops = &ac97_dai_ops,
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2006-10-06 10:38:03 -06:00
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};
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2018-01-28 19:58:25 -07:00
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static int ac97_soc_probe(struct snd_soc_component *component)
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2006-10-06 10:38:03 -06:00
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{
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2014-11-10 14:41:53 -07:00
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struct snd_ac97 *ac97;
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2006-10-06 10:38:03 -06:00
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struct snd_ac97_bus *ac97_bus;
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struct snd_ac97_template ac97_template;
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2010-03-17 14:15:21 -06:00
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int ret;
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2006-10-06 10:38:03 -06:00
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/* add codec as bus device for standard ac97 */
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2018-01-28 19:58:25 -07:00
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ret = snd_ac97_bus(component->card->snd_card, 0, soc_ac97_ops,
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2014-07-17 14:01:07 -06:00
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NULL, &ac97_bus);
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2008-04-23 07:26:45 -06:00
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if (ret < 0)
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2010-03-17 14:15:21 -06:00
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return ret;
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2006-10-06 10:38:03 -06:00
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memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
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2014-11-10 14:41:53 -07:00
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ret = snd_ac97_mixer(ac97_bus, &ac97_template, &ac97);
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2008-04-23 07:26:45 -06:00
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if (ret < 0)
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2010-03-17 14:15:21 -06:00
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return ret;
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2010-03-24 18:22:12 -06:00
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2018-01-28 19:58:25 -07:00
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snd_soc_component_set_drvdata(component, ac97);
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2014-11-10 14:41:53 -07:00
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2006-10-06 10:38:03 -06:00
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return 0;
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}
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2008-07-03 01:33:10 -06:00
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#ifdef CONFIG_PM
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2018-01-28 19:58:25 -07:00
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static int ac97_soc_suspend(struct snd_soc_component *component)
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2008-07-03 01:33:10 -06:00
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{
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2018-01-28 19:58:25 -07:00
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struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
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2014-11-10 14:41:53 -07:00
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snd_ac97_suspend(ac97);
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2008-07-03 01:33:10 -06:00
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return 0;
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}
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2018-01-28 19:58:25 -07:00
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static int ac97_soc_resume(struct snd_soc_component *component)
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2008-07-03 01:33:10 -06:00
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{
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2014-11-10 14:41:53 -07:00
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2018-01-28 19:58:25 -07:00
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struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
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2014-11-10 14:41:53 -07:00
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snd_ac97_resume(ac97);
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2008-07-03 01:33:10 -06:00
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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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2018-01-28 19:58:25 -07:00
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static const struct snd_soc_component_driver soc_component_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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.idle_bias_on = 1,
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.use_pmdown_time = 1,
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.endianness = 1,
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.non_legacy_dai_naming = 1,
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2006-10-06 10:38:03 -06:00
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};
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2010-03-17 14:15:21 -06:00
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2012-12-07 07:26:37 -07:00
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static int ac97_probe(struct platform_device *pdev)
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2010-03-17 14:15:21 -06:00
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{
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2018-01-28 19:58:25 -07:00
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return devm_snd_soc_register_component(&pdev->dev,
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&soc_component_dev_ac97, &ac97_dai, 1);
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2010-03-17 14:15:21 -06:00
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}
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2012-12-07 07:26:37 -07:00
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static int ac97_remove(struct platform_device *pdev)
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2010-03-17 14:15:21 -06:00
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{
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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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2010-09-23 12:43:07 -06:00
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.name = "ac97-codec",
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2010-03-17 14:15:21 -06:00
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},
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.probe = ac97_probe,
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2012-12-07 07:26:37 -07:00
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.remove = ac97_remove,
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2010-03-17 14:15:21 -06:00
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};
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2011-11-23 15:52:08 -07:00
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module_platform_driver(ac97_codec_driver);
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2006-10-06 10:38:03 -06:00
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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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2010-10-13 02:30:33 -06:00
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MODULE_ALIAS("platform:ac97-codec");
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