linux-kernel - [PATCH 4/5] regulator: max77802: Add regulator operating mode set support

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Message-Id: <1412775847-15213-5-git-send-email-javier.martinez@collabora.co.uk>
Date:	Wed,  8 Oct 2014 15:44:06 +0200
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	Mark Brown <broonie@...nel.org>
Cc:	Doug Anderson <dianders@...omium.org>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Olof Johansson <olof@...om.net>,
	Chris Zhong <zyw@...k-chips.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Abhilash Kesavan <kesavan.abhilash@...il.com>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Subject: [PATCH 4/5] regulator: max77802: Add regulator operating mode set support

Add a function handler for the struct regulator_ops .set_mode so an
operating mode (opmode) can be set for regulators.

Regulators opmode are defined using the generic REGULATOR_MODE_*
modes so the driver maps these generic modes to the device-specific
operating modes as stated in the hardware data-sheet.

Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
---
 drivers/regulator/max77802.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/regulator/max77802.c b/drivers/regulator/max77802.c
index d89792b..04ed5cf 100644
--- a/drivers/regulator/max77802.c
+++ b/drivers/regulator/max77802.c
@@ -83,6 +83,34 @@ static int max77802_get_opmode_shift(int id)
 	return -EINVAL;
 }
 
+static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode)
+{
+	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
+	unsigned int val;
+	int id = rdev_get_id(rdev);
+	int shift = max77802_get_opmode_shift(id);
+
+	switch (mode) {
+	case REGULATOR_MODE_NORMAL:
+		val = MAX77802_OPMODE_NORMAL;
+		break;
+	case REGULATOR_MODE_IDLE:
+		val = MAX77802_OPMODE_LP;
+		break;
+	case REGULATOR_MODE_STANDBY:
+		val = MAX77802_OPMODE_STANDBY;
+		break;
+	default:
+		dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
+			 rdev->desc->name, mode);
+		return -EINVAL;
+	}
+
+	max77802->opmode[id] = val;
+	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+				  rdev->desc->enable_mask, val << shift);
+}
+
 /*
  * Some BUCKS supports Normal[ON/OFF] mode during suspend
  *
@@ -247,6 +275,7 @@ static struct regulator_ops max77802_ldo_ops_logic1 = {
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
+	.set_mode		= max77802_set_mode,
 	.set_suspend_mode	= max77802_ldo_set_suspend_mode_logic1,
 };
 
@@ -262,6 +291,7 @@ static struct regulator_ops max77802_ldo_ops_logic2 = {
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
+	.set_mode		= max77802_set_mode,
 	.set_suspend_mode	= max77802_ldo_set_suspend_mode_logic2,
 };
 
@@ -274,6 +304,7 @@ static struct regulator_ops max77802_buck_16_dvs_ops = {
 	.disable		= regulator_disable_regmap,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.set_mode		= max77802_set_mode,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
 	.set_ramp_delay		= max77802_set_ramp_delay_4bit,
 	.set_suspend_disable	= max77802_buck_set_suspend_disable,
@@ -288,6 +319,7 @@ static struct regulator_ops max77802_buck_dvs_ops = {
 	.disable		= regulator_disable_regmap,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.set_mode		= max77802_set_mode,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
 	.set_ramp_delay		= max77802_set_ramp_delay_2bit,
 	.set_suspend_disable	= max77802_buck_set_suspend_disable,
-- 
2.1.0

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