On Tue, Jul 05, 2016 at 09:52:13AM +0800, Garlic Tseng wrote: > On Mon, 2016-07-04 at 16:44 +0200, Mark Brown wrote: > > We really shouldn't be writing the registers or other internal data of > > the device. Instead we should be getting the driver for the relevant > > hardware component to do it. If we just write to registers that makes > > the interoperation with the real driver for the device more fragile than > > it should be, people might update the main driver without noticing the > > external driver. > The AUDIO_TOP_CON4 is a reg of the ASoC hw module. All the registers > which are set in the btmrg operator belong to ASoC hardware. The reg > writing you mention above is to power up the MRG interface in the ASoC > module. The problem is that this is the machine driver, not a driver for the chip that's being controlled.
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