On Fri, Sep 30, 2016 at 03:13:19PM +0200, Takashi Iwai wrote: > On Fri, 30 Sep 2016 14:43:23 +0200, > Subhransu S. Prusty wrote: > > > > Set of patches to fix issues with delays, hw_ptr fuzziness [1] and > > increased buffering w/ DSPs > > > > 1. Rewinds can be disabled when data written in ring buffer will never be > > validated. This allow for new HDaudio SPIB DMA functionality(allow fetch up to the > > application pointer, no rewind supported) > > > > 2. Report max in-flight bytes to avoid problems with stale data (like late > > wake-ups, rewinds) > > > > 3. add new estimate for USB startup delay. > > Well, all these three are really individual and independent features. > So, please send three patch sets instead. Sure. I will send separate patch series for each of them. > > For example, I would apply the USB startup delay fix easily, while the > inflight bytes feature needs more discussion. The rewind disablement > needs a bit more discussion (e.g. can it be disabled from the driver > side as well?). No I think. Considering the SPIB usecases, user may decide to use SPIB or not. Regards, Subhransu > > > thanks, > > Takashi > > > > > [1] > > http://mailman.alsa-project.org/pipermail/alsa-devel/2015-June/093646.html > > > > > > Pierre-Louis Bossart (6): > > ALSA: core: let low-level driver or userspace disable rewinds > > ALSA: core: add .update_appl_ptr callback for pcm ops > > ALSA: core: add report of max inflight bytes > > ALSA: hda: add default value for max_inflight_bytes > > ALSA: usb: no_period_wake and max_inflight_bytes report > > ALSA: usb: take startup delay into account > > > > Ramesh Babu (1): > > ALSA: pcm: avoid mmap of control data if .update_appl_ptr is > > implemented > > > > include/sound/pcm.h | 4 +++ > > include/uapi/sound/asound.h | 6 ++-- > > sound/core/pcm_lib.c | 26 ++++++++++++++++++ > > sound/core/pcm_native.c | 51 +++++++++++++++++++++++++++++++++- > > sound/pci/hda/hda_controller.c | 1 + > > sound/usb/card.h | 1 + > > sound/usb/pcm.c | 62 +++++++++++++++++++++++++++++++++++++----- > > 7 files changed, 141 insertions(+), 10 deletions(-) > > > > -- > > 1.9.1 > > -- _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
