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I2S character driver now supports configurable timeouts

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This commit is contained in:
Gregory Nutt
2013-11-12 10:18:49 -06:00
parent a29e6f93f8
commit c33fe29c6b
2 changed files with 34 additions and 2 deletions
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drivers/audio/Kconfig
+20
View File
@@ -15,6 +15,26 @@ config AUDIO_I2SCHAR
not suitable for use in any real driver application in its current
form.
if AUDIO_I2SCHAR
config AUDIO_I2SCHAR_RXTIMEOUT
int "RX timeout"
default 0
---help---
This is a fixed timeout value that will be used for all receiver
transfers. This is in units of system clock ticks (configurable).
The special value of zero disables RX timeouts. Default: 0
config AUDIO_I2SCHAR_TXTIMEOUT
int "TX timeout"
default 0
---help---
This is a fixed timeout value that will be used for all transmitter
transfers. This is in units of system clock ticks (configurable).
The special value of zero disables RX timeouts. Default: 0
endif #AUDIO_I2SCHAR
config VS1053
bool "VS1053 codec chip"
default n
drivers/audio/i2schar.c
+14 -2
View File
@@ -61,7 +61,17 @@
/****************************************************************************
* Private Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifndef CONFIG_AUDIO_I2SCHAR_RXTIMEOUT
# define CONFIG_AUDIO_I2SCHAR_RXTIMEOUT 0
#endif
#ifndef CONFIG_AUDIO_I2SCHAR_TXTIMEOUT
# define CONFIG_AUDIO_I2SCHAR_TXTIMEOUT 0
#endif
/* Device naming ************************************************************/
#define DEVNAME_FMT "/dev/i2schar%d"
#define DEVNAME_FMTLEN (12 + 3 + 1)
@@ -268,7 +278,8 @@ static ssize_t i2schar_read(FAR struct file *filep, FAR char *buffer,
/* Give the buffer to the I2S driver */
ret = I2S_RECEIVE(priv->i2s, apb, i2schar_rxcallback, priv, 0);
ret = I2S_RECEIVE(priv->i2s, apb, i2schar_rxcallback, priv,
CONFIG_AUDIO_I2SCHAR_RXTIMEOUT);
if (ret < 0)
{
i2sdbg("ERROR: I2S_RECEIVE returned: %d\n", ret);
@@ -342,7 +353,8 @@ static ssize_t i2schar_write(FAR struct file *filep, FAR const char *buffer,
/* Give the audio buffer to the I2S driver */
ret = I2S_SEND(priv->i2s, apb, i2schar_txcallback, priv, 0);
ret = I2S_SEND(priv->i2s, apb, i2schar_txcallback, priv,
CONFIG_AUDIO_I2SCHAR_TXTIMEOUT);
if (ret < 0)
{
i2sdbg("ERROR: I2S_SEND returned: %d\n", ret);