Hi,
On 8/8/2016 11:18 PM, Mark Brown wrote:
On Mon, Aug 08, 2016 at 10:27:38AM +0800, John Hsu wrote:
On 8/5/2016 8:08 PM, Mark Brown wrote:
What does the read actually look like on this device?
The data read from codec by the IIC bus is as the following. 0 0 0 0 0 0 0 D8 ACK D7 D6 D5 D4 D3 D2 D1 D0 The bottom 9 bits are the real register value. The nau8810_reg_read in driver is made by the formate.
So there's really only one read "register"? If that's the case I'd just open code the read and not bother with regmap, it's probably more trouble than it's worth. There are other 7x9 CODECs that do the same thing.
The most registers of the codec are for write function. Only a little is read only, and they are all static value. I understand your concern and agree that. I can take off the register read and write function in the driver. Thanks for your advice.