Re: [PATCH 02/10] media: ar0521: Add V4L2_CID_ANALOG_GAIN

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Hi Jacopo,

On Mon, Oct 17, 2022 at 05:10:03PM +0200, Jacopo Mondi wrote:
> > which is also named analog_gain_code_global, but is documented
> > differently.
> >
> > Could you btw read registers 0x0000 to 0x00ff and provide the data ?
> 
> There is nothing interesting there if not default values. I was hoping
> that analogue_gain_m0 analogue_gain_c0 and analogue_gain_m1
> analogue_gain_c1 would provide a way to inject gains using the
> standard CCS gain model, but those registers are said to be read-only

The m[01] and c[01] factors in the CCS analogue gain formula are constants
that determine how the sensor's analogue gain setting translates to actual
analogue gain. They are not intended to be modifiable at runtime.

-- 
Kind regards,

Sakari Ailus



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