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authorAndreas Mohr <andi@lisas.de>2010-12-27 21:17:11 +0100
committerTakashi Iwai <tiwai@suse.de>2011-01-02 11:09:43 +0100
commit345855951a7d36eed815fd129c49b7ee2b7a6864 (patch)
treeaeae249ff28f888bc2b4383c22bfa86ddd603652 /sound/pci
parent9fd8d36caabaf3102f14cf652d5ca012d775aaa8 (diff)
ALSA: azt3328: use a helper variable to remove one indirection in hotpath
Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/azt3328.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/sound/pci/azt3328.c b/sound/pci/azt3328.c
index 0cb5499ad36a..b1fad46a7b02 100644
--- a/sound/pci/azt3328.c
+++ b/sound/pci/azt3328.c
@@ -294,6 +294,7 @@ MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (
struct snd_azf3328_codec_data {
unsigned long io_base;
+ unsigned int dma_base; /* helper to avoid an indirection in hotpath */
struct snd_pcm_substream *substream;
bool running;
const char *name;
@@ -1165,14 +1166,17 @@ snd_azf3328_codec_setdmaa(struct snd_azf3328 *chip,
static int
snd_azf3328_codec_prepare(struct snd_pcm_substream *substream)
{
-#if 0
- struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_azf3328_codec *codec = runtime->private_data;
+#if 0
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
#endif
snd_azf3328_dbgcallenter();
+
+ codec->dma_base = runtime->dma_addr;
+
#if 0
snd_azf3328_codec_setfmt(chip, AZF_CODEC_...,
runtime->rate,
@@ -1370,18 +1374,17 @@ snd_azf3328_codec_pointer(struct snd_pcm_substream *substream,
{
const struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
const struct snd_azf3328_codec_data *codec = &chip->codecs[codec_type];
- unsigned long bufptr, result;
+ unsigned long result;
snd_pcm_uframes_t frmres;
-#ifdef QUERY_HARDWARE
- bufptr = snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_START_1);
-#else
- bufptr = substream->runtime->dma_addr;
-#endif
result = snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_CURRPOS);
/* calculate offset */
- result -= bufptr;
+#ifdef QUERY_HARDWARE
+ result -= snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_START_1);
+#else
+ result -= codec->dma_base;
+#endif
frmres = bytes_to_frames( substream->runtime, result);
snd_azf3328_dbgcodec("%08li %s @ 0x%8lx, frames %8ld\n",
jiffies, codec->name, result, frmres);