On Mon, 24 Feb 2014 03:01:37 +0000, Mark Brown wrote:
> From: Mark Brown <broonie@xxxxxxxxxx>
>
> The driver reads from the DC offset control registers during callibration
> but since the registers are marked as volatile and there is a register
> cache the values will not be read from the hardware after the first reading
> rendering the callibration ineffective.
Guessing that should read 'not marked as volatile'.
> It appears that the driver was originally written for the ASoC level
> register I/O code but converted to regmap prior to merge and this issue
> was missed during the conversion as the framework level volatile register
> functionality was not being used.
Yes you're correct here, unfortunately. A good spot.
> +static bool da732x_volatile(struct device *dev, unsigned int reg)
> +{
> + switch (reg) {
> + case DA732X_REG_HPL_DAC_OFF_CNTL:
> + case DA732X_REG_HPR_DAC_OFF_CNTL:
> + return true;
> + default:
> + return false;
> + }
> +}
> +
Having looked over the driver again, can you include the following
registers as well:
DA732X_REG_HPL
DA732X_REG_HPR
Also, if we're doing this then you can move to using snd_soc_read()
instead of hw_read(), I guess.
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