On 06/01/2017 10:58 PM, Takashi Iwai wrote:
Replace the copy and the silence ops with the new PCM ops.
The device supports only 1 channel and 8bit sample, so it's always
bytes=frames, and we need no conversion of unit in the callback.
Also, it's a capture stream, thus no silence is needed.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Thanks,
Hans
---
drivers/media/pci/solo6x10/solo6x10-g723.c | 32 ++++++++++++++++++++++--------
1 file changed, 24 insertions(+), 8 deletions(-)
diff --git a/drivers/media/pci/solo6x10/solo6x10-g723.c b/drivers/media/pci/solo6x10/solo6x10-g723.c
index 36e93540bb49..3ca947092775 100644
--- a/drivers/media/pci/solo6x10/solo6x10-g723.c
+++ b/drivers/media/pci/solo6x10/solo6x10-g723.c
@@ -223,9 +223,9 @@ static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
return idx * G723_FRAMES_PER_PAGE;
}
-static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel,
- snd_pcm_uframes_t pos, void __user *dst,
- snd_pcm_uframes_t count)
+static int __snd_solo_pcm_copy(struct snd_pcm_substream *ss,
+ unsigned long pos, void *dst,
+ unsigned long count, bool in_kernel)
{
struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
struct solo_dev *solo_dev = solo_pcm->solo_dev;
@@ -242,16 +242,31 @@ static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel,
if (err)
return err;
- err = copy_to_user(dst + (i * G723_PERIOD_BYTES),
- solo_pcm->g723_buf, G723_PERIOD_BYTES);
-
- if (err)
+ if (in_kernel)
+ memcpy(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES);
+ else if (copy_to_user((void __user *)dst,
+ solo_pcm->g723_buf, G723_PERIOD_BYTES))
return -EFAULT;
+ dst += G723_PERIOD_BYTES;
}
return 0;
}
+static int snd_solo_pcm_copy_user(struct snd_pcm_substream *ss, int channel,
+ unsigned long pos, void __user *dst,
+ unsigned long count)
+{
+ return __snd_solo_pcm_copy(ss, pos, (void *)dst, count, false);
+}
+
+static int snd_solo_pcm_copy_kernel(struct snd_pcm_substream *ss, int channel,
+ unsigned long pos, void *dst,
+ unsigned long count)
+{
+ return __snd_solo_pcm_copy(ss, pos, dst, count, true);
+}
+
static const struct snd_pcm_ops snd_solo_pcm_ops = {
.open = snd_solo_pcm_open,
.close = snd_solo_pcm_close,
@@ -261,7 +276,8 @@ static const struct snd_pcm_ops snd_solo_pcm_ops = {
.prepare = snd_solo_pcm_prepare,
.trigger = snd_solo_pcm_trigger,
.pointer = snd_solo_pcm_pointer,
- .copy = snd_solo_pcm_copy,
+ .copy_user = snd_solo_pcm_copy_user,
+ .copy_kernel = snd_solo_pcm_copy_kernel,
};
static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
