At Tue, 3 May 2011 16:40:43 +0100, Mark Brown wrote:
On Tue, May 03, 2011 at 05:30:44PM +0200, Takashi Iwai wrote:
Mark Brown wrote:
You don't need to retransmit the I2C device address or the register address for every single register.
Is this behavior achieved really by these patches? As far as I read
As I've repeatedly said these patches only provide a building block for that, they don't actually do anything to help with I/O by themselves.
Oh, you wrote it only once in the thread, and it wasn't very clear :)
these two patches, they change how values are stored in the rb-tree. Now it'll be partially an array instead of one-value-per-node. But, this doesn't change how snd_soc_read() / snd_soc_write() are called.
Could you give an example which driver would be influenced actually?
There are no drivers that would benefit yet since the register caches they rely on can't support this yet!
Now got it.
IMO, it's easier to expose an API that allows the update of an register array. The rest is a job of the cache backend stuff. As a fallback, it can be a loop of the single read/write.
Takashi