On Thu, 02 Feb 2017 04:45:48 +0100, Takashi Sakamoto wrote:

Hi,

On Feb 2 2017 12:14, Satendra Singh Thakur wrote:

...

From: satendra singh thakur satendra.t@samsung.com

-Added 2 ioctls in alsa driver's control interface -Added an ioctl to read values of multiple elements at once -Added an ioctl to write values of multiple elements at once -In the absence of above ioctls user needs to call N ioctls to read/write value of N elements which requires N context switches -Proposed ioctls will allow accessing N elements' values in a single context switch -Above mentioned ioctl will be useful for alsa utils such as amixer which reads all controls of given sound card

Signed-off-by: Satendra Singh Thakur satendra.t@samsung.com

include/uapi/sound/asound.h | 8 +++++ sound/core/control.c | 69 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 77 insertions(+)

I'm _strongly_ interested in your two patches, because it has a potentiality to purge ASoC abuse of TLV feature, which was introduced in 2014 with a bad reviewing process.

I don't think it can be a replacement for the extended TLV usages. The proposed API is nothing but a loop of ctl elem read/write, and I'm not sure whether it worth to introduce the new ioctls just for that.

Takashi