/*
 * ALSA SoC SPDIF DIT driver
 *
 *  This driver is used by controllers which can operate in DIT (SPDI/F) where
 *  no codec is needed.  This file provides stub codec that can be used
 *  in these configurations. TI DaVinci Audio controller uses this driver.
 *
 * Author:      Steve Chen,  <schen@mvista.com>
 * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
 * Copyright:   (C) 2009  Texas Instruments, India
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <linux/of.h>

#define DRV_NAME "spdif-dit"

#define STUB_RATES	SNDRV_PCM_RATE_8000_192000
#define STUB_FORMATS	(SNDRV_PCM_FMTBIT_S16_LE | \
			SNDRV_PCM_FMTBIT_S20_3LE | \
			SNDRV_PCM_FMTBIT_S24_LE)

static const struct snd_soc_dapm_widget dit_widgets[] = {
	SND_SOC_DAPM_OUTPUT("spdif-out"),
};

static const struct snd_soc_dapm_route dit_routes[] = {
	{ "spdif-out", NULL, "Playback" },
};

static struct snd_soc_codec_driver soc_codec_spdif_dit = {
	.component_driver = {
		.dapm_widgets		= dit_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(dit_widgets),
		.dapm_routes		= dit_routes,
		.num_dapm_routes	= ARRAY_SIZE(dit_routes),
	},
};

static struct snd_soc_dai_driver dit_stub_dai = {
	.name		= "dit-hifi",
	.playback 	= {
		.stream_name	= "Playback",
		.channels_min	= 1,
		.channels_max	= 384,
		.rates		= STUB_RATES,
		.formats	= STUB_FORMATS,
	},
};

static int spdif_dit_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev, &soc_codec_spdif_dit,
			&dit_stub_dai, 1);
}

static int spdif_dit_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

#ifdef CONFIG_OF
static const struct of_device_id spdif_dit_dt_ids[] = {
	{ .compatible = "linux,spdif-dit", },
	{ }
};
MODULE_DEVICE_TABLE(of, spdif_dit_dt_ids);
#endif

static struct platform_driver spdif_dit_driver = {
	.probe		= spdif_dit_probe,
	.remove		= spdif_dit_remove,
	.driver		= {
		.name	= DRV_NAME,
		.of_match_table = of_match_ptr(spdif_dit_dt_ids),
	},
};

module_platform_driver(spdif_dit_driver);

MODULE_AUTHOR("Steve Chen <schen@mvista.com>");
MODULE_DESCRIPTION("SPDIF dummy codec driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/tipc?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>tipc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/Makefile?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='02608e02fbec04fccf2eb0cc8d8082f65c0a4286'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Laura Abbott &lt;labbott@redhat.com&gt;</td><td class='right'>2016-12-21 12:32:54 -0800</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2016-12-27 17:32:11 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/Makefile?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>02608e02fbec04fccf2eb0cc8d8082f65c0a4286</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/tipc/Makefile?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>37ff0410d130cfe77185f591b07cd6403f207f0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/tipc/Makefile?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>net/tipc/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/Makefile?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/tipc/Makefile?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: testmgr - Use heap buffer for acomp test input</div><div class='commit-msg'>Christopher Covington reported a crash on aarch64 on recent Fedora
kernels:

kernel BUG at ./include/linux/scatterlist.h:140!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
Modules linked in:
CPU: 2 PID: 752 Comm: cryptomgr_test Not tainted 4.9.0-11815-ge93b1cc #162
Hardware name: linux,dummy-virt (DT)
task: ffff80007c650080 task.stack: ffff800008910000
PC is at sg_init_one+0xa0/0xb8
LR is at sg_init_one+0x24/0xb8
...
[&lt;ffff000008398db8&gt;] sg_init_one+0xa0/0xb8
[&lt;ffff000008350a44&gt;] test_acomp+0x10c/0x438
[&lt;ffff000008350e20&gt;] alg_test_comp+0xb0/0x118
[&lt;ffff00000834f28c&gt;] alg_test+0x17c/0x2f0
[&lt;ffff00000834c6a4&gt;] cryptomgr_test+0x44/0x50
[&lt;ffff0000080dac70&gt;] kthread+0xf8/0x128
[&lt;ffff000008082ec0&gt;] ret_from_fork+0x10/0x50

The test vectors used for input are part of the kernel image. These
inputs are passed as a buffer to sg_init_one which eventually blows up
with BUG_ON(!virt_addr_valid(buf)). On arm64, virt_addr_valid returns
false for the kernel image since virt_to_page will not return the
correct page. Fix this by copying the input vectors to heap buffer
before setting up the scatterlist.

Reported-by: Christopher Covington &lt;cov@codeaurora.org&gt;
Fixes: d7db7a882deb ("crypto: acomp - update testmgr with support for acomp")
Signed-off-by: Laura Abbott &lt;labbott@redhat.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=02608e02fbec04fccf2eb0cc8d8082f65c0a4286'>Diffstat</a> (limited to 'net/tipc/Makefile')</div><table summary='diffstat' class='diffstat'>