Replace the copy and the silence ops with the new PCM ops.
For simplifying the code a bit, two local helpers are introduced here:
get_bpos() and playback_copy_ack().
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/isa/gus/gus_pcm.c | 97 ++++++++++++++++++++++++++++++-------------------
1 file changed, 59 insertions(+), 38 deletions(-)
diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
index 0cc3f272edf1..b9f6dcbef889 100644
--- a/sound/isa/gus/gus_pcm.c
+++ b/sound/isa/gus/gus_pcm.c
@@ -353,26 +353,25 @@ static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
return 0;
}
-static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
- int voice,
- snd_pcm_uframes_t pos,
- void __user *src,
- snd_pcm_uframes_t count)
+static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos,
+ unsigned int len)
{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct gus_pcm_private *pcmp = runtime->private_data;
- struct snd_gus_card *gus = pcmp->gus;
- unsigned int bpos, len;
- int w16, invert;
-
- bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
- len = samples_to_bytes(runtime, count);
+ unsigned int bpos = pos + (voice * (pcmp->dma_size / 2));
if (snd_BUG_ON(bpos > pcmp->dma_size))
return -EIO;
if (snd_BUG_ON(bpos + len > pcmp->dma_size))
return -EIO;
- if (copy_from_user(runtime->dma_area + bpos, src, len))
- return -EFAULT;
+ return bpos;
+}
+
+static int playback_copy_ack(struct snd_pcm_substream *substream,
+ unsigned int bpos, unsigned int len)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ struct snd_gus_card *gus = pcmp->gus;
+ int w16, invert;
+
if (len > 32)
return snd_gf1_pcm_block_change(substream, bpos,
pcmp->memory + bpos, len);
@@ -383,33 +382,54 @@ static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
pcmp->memory + bpos, len, w16, invert);
}
+static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
+ int voice, unsigned long pos,
+ void __user *src, unsigned long count)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int len = count;
+ int bpos;
+
+ bpos = get_bpos(pcmp, voice, pos, len);
+ if (bpos < 0)
+ return pos;
+ if (copy_from_user(runtime->dma_area + bpos, src, len))
+ return -EFAULT;
+ return playback_copy_ack(substream, bpos, len);
+}
+
+static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream,
+ int voice, unsigned long pos,
+ void *src, unsigned long count)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int len = count;
+ int bpos;
+
+ bpos = get_bpos(pcmp, voice, pos, len);
+ if (bpos < 0)
+ return pos;
+ memcpy(runtime->dma_area + bpos, src, len);
+ return playback_copy_ack(substream, bpos, len);
+}
+
static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
- int voice,
- snd_pcm_uframes_t pos,
- snd_pcm_uframes_t count)
+ int voice, unsigned long pos,
+ unsigned long count)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct gus_pcm_private *pcmp = runtime->private_data;
- struct snd_gus_card *gus = pcmp->gus;
- unsigned int bpos, len;
- int w16, invert;
+ unsigned int len = count;
+ int bpos;
- bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
- len = samples_to_bytes(runtime, count);
- if (snd_BUG_ON(bpos > pcmp->dma_size))
- return -EIO;
- if (snd_BUG_ON(bpos + len > pcmp->dma_size))
- return -EIO;
+ bpos = get_bpos(pcmp, voice, pos, len);
+ if (bpos < 0)
+ return pos;
snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
- count);
- if (len > 32)
- return snd_gf1_pcm_block_change(substream, bpos,
- pcmp->memory + bpos, len);
-
- w16 = (snd_pcm_format_width(runtime->format) == 16);
- invert = snd_pcm_format_unsigned(runtime->format);
- return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
- pcmp->memory + bpos, len, w16, invert);
+ bytes_to_samples(runtime, count));
+ return playback_copy_ack(substream, bpos, len);
}
static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
@@ -831,8 +851,9 @@ static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
.prepare = snd_gf1_pcm_playback_prepare,
.trigger = snd_gf1_pcm_playback_trigger,
.pointer = snd_gf1_pcm_playback_pointer,
- .copy = snd_gf1_pcm_playback_copy,
- .silence = snd_gf1_pcm_playback_silence,
+ .copy_user = snd_gf1_pcm_playback_copy,
+ .copy_kernel = snd_gf1_pcm_playback_copy_kernel,
+ .fill_silence = snd_gf1_pcm_playback_silence,
};
static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
--
2.13.0
