UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ASoC: Blackfin: keep better track of SPORT configuration state 

Do not let the SPORT be reconfigured until there are no more active
streams.  Then we can let the system reprogram the SPORT state.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Cliff Cai 2009-06-20 11:29:05 -04:00 committed by Mark Brown
parent ef39412622
commit 895c9c0565
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sound/soc/blackfin/bf5xx-i2s.c
View File

@ -50,6 +50,7 @@ struct bf5xx_i2s_port {
u16 tcr2;
u16 rcr2;
int counter;
int configured;
};
static struct bf5xx_i2s_port bf5xx_i2s;
@ -168,7 +169,7 @@ static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
break;
}
if (bf5xx_i2s.counter == 1) {
if (!bf5xx_i2s.configured) {
/*
* TX and RX are not independent,they are enabled at the
* same time, even if only one side is running. So, we
@ -177,6 +178,7 @@ static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
*
* CPU DAI:slave mode.
*/
bf5xx_i2s.configured = 1;
ret = sport_config_rx(sport_handle, bf5xx_i2s.rcr1,
bf5xx_i2s.rcr2, 0, 0);
if (ret) {
@ -200,6 +202,9 @@ static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream,
{
pr_debug("%s enter\n", __func__);
bf5xx_i2s.counter--;
/* No active stream, SPORT is allowed to be configured again. */
if (!bf5xx_i2s.counter)
bf5xx_i2s.configured = 0;
}
static int bf5xx_i2s_probe(struct platform_device *pdev,