p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ASoC: audio-graph-scu-card: care link / dai count 

In DPCM case, it uses CPU-dummy / dummy-Codec dai links.
If sound card is caring only DPCM, link count = dai count,
but, if non DPCM case, link count != dai count.
Now, we want to merge audio-graph-card and audio-graph-scu-card,
then, we need to care both link / dai count more carefly
This patch cares it, and prepare for merging audio card

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2018-11-30 02:06:51 +00:00 committed by Mark Brown
parent b6f3fc005a
commit c89ff03ac8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 62 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
sound/soc/generic/audio-graph-scu-card.c
View File

@ -277,7 +277,10 @@ static int asoc_graph_card_parse_of(struct graph_card_data *priv)
return ret;
}
static int asoc_graph_get_dais_count(struct device *dev)
static void asoc_graph_get_dais_count(struct device *dev,
int *link_num,
int *dais_num,
int *ccnf_num)
{
struct of_phandle_iterator it;
struct device_node *node = dev->of_node;
@ -286,10 +289,48 @@ static int asoc_graph_get_dais_count(struct device *dev)
struct device_node *codec_ep;
struct device_node *codec_port;
struct device_node *codec_port_old;
int count = 0;
struct device_node *codec_port_old2;
int rc;
/*
* link_num : number of links.
* CPU-Codec / CPU-dummy / dummy-Codec
* dais_num : number of DAIs
* ccnf_num : number of codec_conf
* same number for dummy-Codec
*
* ex1)
* CPU0 --- Codec0 link : 5
* CPU1 --- Codec1 dais : 7
* CPU2 -/ ccnf : 1
* CPU3 --- Codec2
*
* => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec
* => 7 DAIs = 4xCPU + 3xCodec
* => 1 ccnf = 1xdummy-Codec
*
* ex2)
* CPU0 --- Codec0 link : 5
* CPU1 --- Codec1 dais : 6
* CPU2 -/ ccnf : 1
* CPU3 -/
*
* => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec
* => 6 DAIs = 4xCPU + 2xCodec
* => 1 ccnf = 1xdummy-Codec
*
* ex3)
* CPU0 --- Codec0 link : 6
* CPU1 -/ dais : 6
* CPU2 --- Codec1 ccnf : 2
* CPU3 -/
*
* => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec
* => 6 DAIs = 4xCPU + 2xCodec
* => 2 ccnf = 2xdummy-Codec
*/
codec_port_old = NULL;
codec_port_old2 = NULL;
of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
cpu_port = it.node;
cpu_ep = of_get_next_child(cpu_port, NULL);
@ -300,16 +341,22 @@ static int asoc_graph_get_dais_count(struct device *dev)
of_node_put(codec_ep);
of_node_put(codec_port);
count++;
(*link_num)++;
(*dais_num)++;
if (codec_port_old == codec_port)
if (codec_port_old == codec_port) {
if (codec_port_old2 != codec_port_old) {
(*link_num)++;
(*ccnf_num)++;
}
codec_port_old2 = codec_port_old;
continue;
}
count++;
(*dais_num)++;
codec_port_old = codec_port;
}
return count;
}
static int asoc_graph_card_probe(struct platform_device *pdev)
@ -319,19 +366,20 @@ static int asoc_graph_card_probe(struct platform_device *pdev)
struct graph_dai_props *dai_props;
struct device *dev = &pdev->dev;
struct snd_soc_card *card;
int num, ret, i;
int lnum = 0, dnum = 0, cnum = 0;
int ret, i;
/* Allocate the private data and the DAI link array */
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
num = asoc_graph_get_dais_count(dev);
if (num == 0)
asoc_graph_get_dais_count(dev, &lnum, &dnum, &cnum);
if (!lnum || !dnum)
return -EINVAL;
dai_props = devm_kcalloc(dev, num, sizeof(*dai_props), GFP_KERNEL);
dai_link = devm_kcalloc(dev, num, sizeof(*dai_link), GFP_KERNEL);
dai_props = devm_kcalloc(dev, lnum, sizeof(*dai_props), GFP_KERNEL);
dai_link = devm_kcalloc(dev, lnum, sizeof(*dai_link), GFP_KERNEL);
if (!dai_props || !dai_link)
return -ENOMEM;
@ -341,7 +389,7 @@ static int asoc_graph_card_probe(struct platform_device *pdev)
* see
* soc-core.c :: snd_soc_init_multicodec()
*/
for (i = 0; i < num; i++) {
for (i = 0; i < lnum; i++) {
dai_link[i].codecs = &dai_props[i].codecs;
dai_link[i].num_codecs = 1;
dai_link[i].platform = &dai_props[i].platform;
@ -355,7 +403,7 @@ static int asoc_graph_card_probe(struct platform_device *pdev)
card->owner = THIS_MODULE;
card->dev = dev;
card->dai_link = priv->dai_link;
card->num_links = num;
card->num_links = lnum;
card->codec_conf = &priv->codec_conf;
card->num_configs = 1;