diff options
| author | Lionel Xu <Lionel.Xu@freescale.com> | 2011-12-09 14:25:53 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-01-09 21:09:53 +0800 |
| commit | cbffd11e886c6ba1e2eb5df670b0bb7b0183c852 (patch) | |
| tree | b76a69c691c4b1c930f31d95e1f6fd16d19d9546 /sound | |
| parent | 5e0a900817230061549d4573c5b799e46d973a2d (diff) | |
ENGR00162729 MX6 ESAI: To reset the codec before initing a stream playbacking
Sometimes there is no sound after starting a stream playbacking, this problem
can be resolved by resetting external codec at the beginning of startup.
Signed-off-by: Lionel Xu <R63889@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/cs42888.h | 1 | ||||
| -rw-r--r-- | sound/soc/imx/imx-cs42888.c | 9 |
2 files changed, 8 insertions, 2 deletions
diff --git a/sound/soc/codecs/cs42888.h b/sound/soc/codecs/cs42888.h index a650c9da5338..bea8beb8b70d 100644 --- a/sound/soc/codecs/cs42888.h +++ b/sound/soc/codecs/cs42888.h @@ -19,6 +19,7 @@ * the .codec_dai field of your machine driver's snd_soc_dai_link structure. */ extern struct snd_soc_dai_driver cs42888_dai; +#define CS42888_RST 235 /* * The ASoC codec device structure for the CS42888. Assign this structure diff --git a/sound/soc/imx/imx-cs42888.c b/sound/soc/imx/imx-cs42888.c index d34be0a0e8f9..4c9ca9857464 100644 --- a/sound/soc/imx/imx-cs42888.c +++ b/sound/soc/imx/imx-cs42888.c @@ -20,6 +20,7 @@ #include <linux/delay.h> #include <linux/regulator/consumer.h> #include <linux/fsl_devices.h> +#include <linux/gpio.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> @@ -33,7 +34,6 @@ #include "imx-esai.h" #include "../codecs/cs42888.h" - struct imx_priv_state { int hw; }; @@ -45,8 +45,13 @@ static int imx_3stack_startup(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - if (!cpu_dai->active) + + if (!cpu_dai->active) { hw_state.hw = 0; + gpio_direction_output(CS42888_RST, 0); + msleep(100); + gpio_direction_output(CS42888_RST, 1); + } return 0; } |