Dragonboard 410c: Does the I2C controller in this board support repeated start

#1

From the following page, I know i2c_transfer() should support repeated START conditon:

I copied the function i2c_read_regs() from the above link to my driver code, but unluckily, when I insmod my module, and capture the timing wave with a LA, found there is still a STOP bit on the transfer. So I have a doubt, does db410 I2c controller support repeated START? Anybody ever noticed this issue? Anyboday can give me a clear answer? Thanks in advance.

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#2

The hardware support repeated start, but there is probably a lack of support in the driver.

#3

Hi Loic,

Thanks for you fast reply. Would you please suggest me how to modify the driver code to do that? Thank you very much in advance.