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ASoC: simple-card: don't select DPCM via simple-audio-card 

commit da215354eb ("ASoC: simple-card: merge simple-scu-card")
merged simple-scu-audio-card which can handle DPCM into
simple-audio-card.

By this patch, the judgement to select "normal sound card" or
"DPCM sound card" is based on its CPU/Codec DAI count.
But, because of it, existing "simple-audio-card" user who is
assuming "normal sound card" might select DPCM unintentionally.

To solve this issue, this patch allows "simple-audio-card" user
can select "normal sound card", and "simple-scu-audio-card" user
can select both "normal sound card" and "DPCM sound card".
This keeps compatibility collectry.

Fixes: da215354eb ("ASoC: simple-card: merge simple-scu-card")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Kuninori Morimoto 2019-04-04 09:52:52 +09:00 committed by Mark Brown
parent c2c616021d
commit 42bf029a55
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GPG Key ID: 24D68B725D5487D0
1 changed files with 9 additions and 3 deletions
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12
sound/soc/generic/simple-card.c
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@ -9,12 +9,15 @@
#include <linux/device.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/string.h>
#include <sound/simple_card.h>
#include <sound/soc-dai.h>
#include <sound/soc.h>
#define DPCM_SELECTABLE 1
struct simple_priv {
struct snd_soc_card snd_card;
struct simple_dai_props {
@ -441,6 +444,7 @@ static int simple_for_each_link(struct simple_priv *priv,
struct device *dev = simple_priv_to_dev(priv);
struct device_node *top = dev->of_node;
struct device_node *node;
uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev);
bool is_top = 0;
int ret = 0;
@ -480,8 +484,9 @@ static int simple_for_each_link(struct simple_priv *priv,
* if it has many CPUs,
* or has convert-xxx property
*/
if (num > 2 ||
adata.convert_rate || adata.convert_channels)
if (dpcm_selectable &&
(num > 2 ||
adata.convert_rate || adata.convert_channels))
ret = func_dpcm(priv, np, codec, li, is_top);
/* else normal sound */
else
@ -822,7 +827,8 @@ static int simple_remove(struct platform_device *pdev)
static const struct of_device_id simple_of_match[] = {
{ .compatible = "simple-audio-card", },
{ .compatible = "simple-scu-audio-card", },
{ .compatible = "simple-scu-audio-card",
.data = (void *)DPCM_SELECTABLE },
{},
};
MODULE_DEVICE_TABLE(of, simple_of_match);