linux-kernel - Re: [PATCH v2 1/7] regulator: qcom-labibb: Implement voltage selector ops

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Date:   Thu, 14 Jan 2021 22:40:16 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Cc:     linux-arm-msm@...r.kernel.org, agross@...nel.org,
        lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        sumit.semwal@...aro.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, phone-devel@...r.kernel.org,
        konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
        martin.botka@...ainline.org
Subject: Re: [PATCH v2 1/7] regulator: qcom-labibb: Implement voltage
 selector ops

On Wed 13 Jan 13:42 CST 2021, AngeloGioacchino Del Regno wrote:

> Implement {get,set}_voltage_sel, list_voltage, map_voltage with
> the useful regulator regmap helpers in order to be able to manage
> the voltage of LAB (positive) and IBB (negative) regulators.
> 
> In particular, the supported ranges are the following:
> - LAB (pos):  4600mV to  6100mV with 100mV stepping,
> - IBB (neg): -7700mV to -1400mV with 100mV stepping.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
> ---
>  drivers/regulator/qcom-labibb-regulator.c | 28 +++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/regulator/qcom-labibb-regulator.c b/drivers/regulator/qcom-labibb-regulator.c
> index 8ccf572394a2..9f51c96f16fb 100644
> --- a/drivers/regulator/qcom-labibb-regulator.c
> +++ b/drivers/regulator/qcom-labibb-regulator.c
> @@ -19,6 +19,12 @@
>  #define PMI8998_IBB_REG_BASE		0xdc00
>  
>  #define REG_LABIBB_STATUS1		0x08
> +
> +#define REG_LABIBB_VOLTAGE		0x41
> + #define LABIBB_VOLTAGE_OVERRIDE_EN	BIT(7)
> + #define LAB_VOLTAGE_SET_MASK		GENMASK(3, 0)
> + #define IBB_VOLTAGE_SET_MASK		GENMASK(5, 0)
> +
>  #define REG_LABIBB_ENABLE_CTL		0x46
>  #define LABIBB_STATUS1_VREG_OK_BIT	BIT(7)
>  #define LABIBB_CONTROL_ENABLE		BIT(7)
> @@ -51,6 +57,10 @@ static const struct regulator_ops qcom_labibb_ops = {
>  	.enable			= regulator_enable_regmap,
>  	.disable		= regulator_disable_regmap,
>  	.is_enabled		= regulator_is_enabled_regmap,
> +	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
> +	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
> +	.list_voltage		= regulator_list_voltage_linear_range,
> +	.map_voltage		= regulator_map_voltage_linear_range,
>  };
>  
>  static const struct regulator_desc pmi8998_lab_desc = {
> @@ -59,9 +69,18 @@ static const struct regulator_desc pmi8998_lab_desc = {
>  	.enable_val		= LABIBB_CONTROL_ENABLE,
>  	.enable_time		= LAB_ENABLE_TIME,
>  	.poll_enabled_time	= LABIBB_POLL_ENABLED_TIME,
> +	.vsel_reg		= (PMI8998_LAB_REG_BASE + REG_LABIBB_VOLTAGE),
> +	.vsel_mask		= LAB_VOLTAGE_SET_MASK,
> +	.apply_reg		= (PMI8998_LAB_REG_BASE + REG_LABIBB_VOLTAGE),
> +	.apply_bit		= LABIBB_VOLTAGE_OVERRIDE_EN,
>  	.off_on_delay		= LABIBB_OFF_ON_DELAY,
>  	.owner			= THIS_MODULE,
>  	.type			= REGULATOR_VOLTAGE,
> +	.linear_ranges		= (struct linear_range[]) {
> +		REGULATOR_LINEAR_RANGE(4600000, 0, 15, 100000),
> +	},
> +	.n_linear_ranges	= 1,
> +	.n_voltages		= 16,
>  	.ops			= &qcom_labibb_ops,
>  };
>  
> @@ -71,9 +90,18 @@ static const struct regulator_desc pmi8998_ibb_desc = {
>  	.enable_val		= LABIBB_CONTROL_ENABLE,
>  	.enable_time		= IBB_ENABLE_TIME,
>  	.poll_enabled_time	= LABIBB_POLL_ENABLED_TIME,
> +	.vsel_reg		= (PMI8998_IBB_REG_BASE + REG_LABIBB_VOLTAGE),
> +	.vsel_mask		= IBB_VOLTAGE_SET_MASK,
> +	.apply_reg		= (PMI8998_IBB_REG_BASE + REG_LABIBB_VOLTAGE),
> +	.apply_bit		= LABIBB_VOLTAGE_OVERRIDE_EN,
>  	.off_on_delay		= LABIBB_OFF_ON_DELAY,
>  	.owner			= THIS_MODULE,
>  	.type			= REGULATOR_VOLTAGE,
> +	.linear_ranges		= (struct linear_range[]) {
> +		REGULATOR_LINEAR_RANGE(1400000, 0, 63, 100000),
> +	},
> +	.n_linear_ranges	= 1,
> +	.n_voltages		= 64,
>  	.ops			= &qcom_labibb_ops,
>  };
>  
> -- 
> 2.29.2
>