We can use existing macros to poll and update register values instead of open coding the functionality.
Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com --- sound/hda/hdac_stream.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-)
diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index f3582012d22f..ce6a2f270445 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -10,6 +10,7 @@ #include <sound/core.h> #include <sound/pcm.h> #include <sound/hdaudio.h> +#include <sound/hdaudio_ext.h> #include <sound/hda_register.h> #include "trace.h"
@@ -165,7 +166,6 @@ EXPORT_SYMBOL_GPL(snd_hdac_stop_streams_and_chip); void snd_hdac_stream_reset(struct hdac_stream *azx_dev) { unsigned char val; - int timeout; int dma_run_state;
snd_hdac_stream_clear(azx_dev); @@ -173,30 +173,17 @@ void snd_hdac_stream_reset(struct hdac_stream *azx_dev) dma_run_state = snd_hdac_stream_readb(azx_dev, SD_CTL) & SD_CTL_DMA_START;
snd_hdac_stream_updateb(azx_dev, SD_CTL, 0, SD_CTL_STREAM_RESET); - udelay(3); - timeout = 300; - do { - val = snd_hdac_stream_readb(azx_dev, SD_CTL) & - SD_CTL_STREAM_RESET; - if (val) - break; - } while (--timeout); + + /* wait for hardware to report that the stream entered reset */ + snd_hdac_stream_readb_poll(azx_dev, SD_CTL, val, (val & SD_CTL_STREAM_RESET), 3, 300);
if (azx_dev->bus->dma_stop_delay && dma_run_state) udelay(azx_dev->bus->dma_stop_delay);
- val &= ~SD_CTL_STREAM_RESET; - snd_hdac_stream_writeb(azx_dev, SD_CTL, val); - udelay(3); + snd_hdac_stream_updateb(azx_dev, SD_CTL, SD_CTL_STREAM_RESET, 0);
- timeout = 300; - /* waiting for hardware to report that the stream is out of reset */ - do { - val = snd_hdac_stream_readb(azx_dev, SD_CTL) & - SD_CTL_STREAM_RESET; - if (!val) - break; - } while (--timeout); + /* wait for hardware to report that the stream is out of reset */ + snd_hdac_stream_readb_poll(azx_dev, SD_CTL, val, !(val & SD_CTL_STREAM_RESET), 3, 300);
/* reset first position - may not be synced with hw at this time */ if (azx_dev->posbuf)