Re: [PATCH 19/40] mfd: ti_am335x_tscadc: Always provide an idle configuration

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On Wed, 25 Aug 2021 17:24:57 +0200
Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote:

> The idle register is valid no matter if the touchscreen is used or not,
> let's always configure it.
Probably want a statement in here about the reordering that occurred in resume.

J

> 
> Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> ---
>  drivers/mfd/ti_am335x_tscadc.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
> index 258199be4c6a..7071344ad18e 100644
> --- a/drivers/mfd/ti_am335x_tscadc.c
> +++ b/drivers/mfd/ti_am335x_tscadc.c
> @@ -218,16 +218,16 @@ static	int ti_tscadc_probe(struct platform_device *pdev)
>  	ctrl = CNTRLREG_STEPCONFIGWRT |	CNTRLREG_STEPID;
>  	regmap_write(tscadc->regmap, REG_CTRL, ctrl);
>  
> -	/* Set register bits for Idle Config Mode */
>  	if (tsc_wires > 0) {
>  		tscadc->tsc_wires = tsc_wires;
>  		if (tsc_wires == 5)
>  			ctrl |= CNTRLREG_5WIRE | CNTRLREG_TSCENB;
>  		else
>  			ctrl |= CNTRLREG_4WIRE | CNTRLREG_TSCENB;
> -		tscadc_idle_config(tscadc);
>  	}
>  
> +	tscadc_idle_config(tscadc);
> +
>  	/* Enable the TSC module enable bit */
>  	ctrl |= CNTRLREG_TSCSSENB;
>  	regmap_write(tscadc->regmap, REG_CTRL, ctrl);
> @@ -318,12 +318,12 @@ static int __maybe_unused tscadc_resume(struct device *dev)
>  			ctrl |= CNTRLREG_5WIRE | CNTRLREG_TSCENB;
>  		else
>  			ctrl |= CNTRLREG_4WIRE | CNTRLREG_TSCENB;
> -		tscadc_idle_config(tscadc);
>  	}
>  	ctrl |= CNTRLREG_TSCSSENB;
>  	regmap_write(tscadc->regmap, REG_CTRL, ctrl);
>  
>  	regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div);
> +	tscadc_idle_config(tscadc);
>  
>  	return 0;
>  }




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