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| author | Takashi Iwai <tiwai@suse.de> | 2017-05-10 23:20:10 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-06-02 20:38:18 +0300 |
| commit | 1facf21e8b903524b34f09c39a7d27b4b71a07f7 (patch) | |
| tree | b166d0d0b818cae8646504183dcd9f9c0c01c6b8 /drivers/media/pci/solo6x10 | |
| parent | aa708c613b96c9c3a00a5ba78a203616cab27f86 (diff) | |
| download | linux-1facf21e8b903524b34f09c39a7d27b4b71a07f7.tar.xz | |
[media] solo6x10: Convert to the new PCM ops
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.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/media/pci/solo6x10')
| -rw-r--r-- | drivers/media/pci/solo6x10/solo6x10-g723.c | 32 |
1 files 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, |