linux-kernel - Re: [PATCH] regulator: rt6160: Fix setting suspend voltage

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Date:   Wed, 16 Jun 2021 02:06:22 +0000
From:   cy_huang(黃啟原) <cy_huang@...htek.com>
To:     "axel.lin@...ics.com" <axel.lin@...ics.com>,
        "broonie@...nel.org" <broonie@...nel.org>
CC:     "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "u0084500@...il.com" <u0084500@...il.com>
Subject: Re: [PATCH] regulator: rt6160: Fix setting suspend voltage

> The vsel active level is for the normal voltage, the opposite level is
> the suspend voltage.
>
> Signed-off-by: Axel Lin <axel.lin@...ics.com>
> ---
> Hi ChiYuan,
> I think fix it this way make the intention more clear.
>
>  drivers/regulator/rt6160-regulator.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>
Thx. It's more intuitive.

Reviewed-by: ChiYuan Huang <cy_huang@...htek.com>

> diff --git a/drivers/regulator/rt6160-regulator.c b/drivers/regulator/rt6160-
> regulator.c
> index ccd023da4318..5d7b0e7ad69a 100644
> --- a/drivers/regulator/rt6160-regulator.c
> +++ b/drivers/regulator/rt6160-regulator.c
> @@ -128,13 +128,19 @@ static unsigned int rt6160_get_mode(struct regulator_dev
> *rdev)
>  static int rt6160_set_suspend_voltage(struct regulator_dev *rdev, int uV)
>  {
>  struct regmap *regmap = rdev_get_regmap(rdev);
> +unsigned int suspend_vsel_reg;
>  int vsel;
>
>  vsel = regulator_map_voltage_linear(rdev, uV, uV);
>  if (vsel < 0)
>  return vsel;
>
> -return regmap_update_bits(regmap, rdev->desc->vsel_reg,
> +if (rdev->desc->vsel_reg == RT6160_REG_VSELL)
> +suspend_vsel_reg = RT6160_REG_VSELH;
> +else
> +suspend_vsel_reg = RT6160_REG_VSELL;
> +
> +return regmap_update_bits(regmap, suspend_vsel_reg,
>    RT6160_VSEL_MASK, vsel);
>  }
>
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