2008-11-19 07:37:31 +01:00
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/*
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* ALSA Soc PCM3008 codec support
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*
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* Author: Hugo Villeneuve
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* Copyright (C) 2008 Lyrtech inc
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*
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* Based on AC97 Soc codec, original copyright follow:
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* Copyright 2005 Wolfson Microelectronics PLC.
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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 PCM3008 support.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/gpio.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 09:04:11 +01:00
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#include <linux/slab.h>
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2011-07-15 18:38:28 +02:00
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#include <linux/module.h>
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2008-11-19 07:37:31 +01:00
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include "pcm3008.h"
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#define PCM3008_VERSION "0.2"
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#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000)
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2010-03-17 21:15:21 +01:00
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static struct snd_soc_dai_driver pcm3008_dai = {
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.name = "pcm3008-hifi",
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2008-11-19 07:37:31 +01:00
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.playback = {
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.stream_name = "PCM3008 Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = PCM3008_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.capture = {
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.stream_name = "PCM3008 Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = PCM3008_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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};
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static void pcm3008_gpio_free(struct pcm3008_setup_data *setup)
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{
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gpio_free(setup->dem0_pin);
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gpio_free(setup->dem1_pin);
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gpio_free(setup->pdad_pin);
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gpio_free(setup->pdda_pin);
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}
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2010-03-17 21:15:21 +01:00
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static int pcm3008_soc_probe(struct snd_soc_codec *codec)
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2008-11-19 07:37:31 +01:00
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{
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2010-03-17 21:15:21 +01:00
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struct pcm3008_setup_data *setup = codec->dev->platform_data;
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2008-11-19 07:37:31 +01:00
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int ret = 0;
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printk(KERN_INFO "PCM3008 SoC Audio Codec %s\n", PCM3008_VERSION);
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/* DEM1 DEM0 DE-EMPHASIS_MODE
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* Low Low De-emphasis 44.1 kHz ON
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* Low High De-emphasis OFF
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* High Low De-emphasis 48 kHz ON
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* High High De-emphasis 32 kHz ON
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*/
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/* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
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ret = gpio_request(setup->dem0_pin, "codec_dem0");
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if (ret == 0)
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ret = gpio_direction_output(setup->dem0_pin, 1);
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if (ret != 0)
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goto gpio_err;
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/* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
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ret = gpio_request(setup->dem1_pin, "codec_dem1");
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if (ret == 0)
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ret = gpio_direction_output(setup->dem1_pin, 0);
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if (ret != 0)
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goto gpio_err;
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/* Configure PDAD GPIO. */
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ret = gpio_request(setup->pdad_pin, "codec_pdad");
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if (ret == 0)
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ret = gpio_direction_output(setup->pdad_pin, 1);
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if (ret != 0)
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goto gpio_err;
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/* Configure PDDA GPIO. */
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ret = gpio_request(setup->pdda_pin, "codec_pdda");
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if (ret == 0)
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ret = gpio_direction_output(setup->pdda_pin, 1);
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if (ret != 0)
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goto gpio_err;
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return ret;
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gpio_err:
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pcm3008_gpio_free(setup);
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return ret;
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}
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2010-03-17 21:15:21 +01:00
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static int pcm3008_soc_remove(struct snd_soc_codec *codec)
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2008-11-19 07:37:31 +01:00
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{
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2010-03-17 21:15:21 +01:00
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struct pcm3008_setup_data *setup = codec->dev->platform_data;
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2008-11-19 07:37:31 +01:00
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pcm3008_gpio_free(setup);
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return 0;
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}
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#ifdef CONFIG_PM
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2010-03-17 21:15:21 +01:00
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static int pcm3008_soc_suspend(struct snd_soc_codec *codec, pm_message_t msg)
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2008-11-19 07:37:31 +01:00
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{
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2010-03-17 21:15:21 +01:00
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struct pcm3008_setup_data *setup = codec->dev->platform_data;
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2008-11-19 07:37:31 +01:00
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gpio_set_value(setup->pdad_pin, 0);
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gpio_set_value(setup->pdda_pin, 0);
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return 0;
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}
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2010-03-17 21:15:21 +01:00
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static int pcm3008_soc_resume(struct snd_soc_codec *codec)
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2008-11-19 07:37:31 +01:00
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{
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2010-03-17 21:15:21 +01:00
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struct pcm3008_setup_data *setup = codec->dev->platform_data;
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2008-11-19 07:37:31 +01:00
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gpio_set_value(setup->pdad_pin, 1);
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gpio_set_value(setup->pdda_pin, 1);
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return 0;
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}
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#else
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#define pcm3008_soc_suspend NULL
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#define pcm3008_soc_resume NULL
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#endif
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2010-03-17 21:15:21 +01:00
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static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
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2008-11-19 07:37:31 +01:00
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.probe = pcm3008_soc_probe,
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.remove = pcm3008_soc_remove,
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.suspend = pcm3008_soc_suspend,
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.resume = pcm3008_soc_resume,
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};
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2010-03-17 21:15:21 +01:00
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static int __devinit pcm3008_codec_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_pcm3008, &pcm3008_dai, 1);
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}
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static int __devexit pcm3008_codec_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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MODULE_ALIAS("platform:pcm3008-codec");
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static struct platform_driver pcm3008_codec_driver = {
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.probe = pcm3008_codec_probe,
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.remove = __devexit_p(pcm3008_codec_remove),
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.driver = {
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.name = "pcm3008-codec",
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.owner = THIS_MODULE,
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},
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};
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2011-11-23 23:52:08 +01:00
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module_platform_driver(pcm3008_codec_driver);
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2008-12-08 20:17:58 +01:00
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2008-11-19 07:37:31 +01:00
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MODULE_DESCRIPTION("Soc PCM3008 driver");
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MODULE_AUTHOR("Hugo Villeneuve");
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MODULE_LICENSE("GPL");
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