Merge remote-tracking branch 'regulator/topic/ab8500' into v3.9-rc8

4 files changed, 2925 insertions, 148 deletions

diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 6e8250382de..47a34ff88f9 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -12,7 +12,7 @@ obj-$(CONFIG_REGULATOR_USERSPACE_CONSUMER) += userspace-consumer.o
 obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
 obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
 obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
-obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500.o
+obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500.o ab8500-ext.o
 obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
diff --git a/drivers/regulator/ab8500-ext.c b/drivers/regulator/ab8500-ext.c
new file mode 100644
index 00000000000..b4d45472aae
--- /dev/null
+++ b/drivers/regulator/ab8500-ext.c
@@ -0,0 +1,407 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
+ *
+ * This file is based on drivers/regulator/ab8500.c
+ *
+ * AB8500 external regulators
+ *
+ * ab8500-ext supports the following regulators:
+ * - VextSupply3
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/regulator/ab8500.h>
+
+/**
+ * struct ab8500_ext_regulator_info - ab8500 regulator information
+ * @dev: device pointer
+ * @desc: regulator description
+ * @rdev: regulator device
+ * @cfg: regulator configuration (extension of regulator FW configuration)
+ * @update_bank: bank to control on/off
+ * @update_reg: register to control on/off
+ * @update_mask: mask to enable/disable and set mode of regulator
+ * @update_val: bits holding the regulator current mode
+ * @update_val_hp: bits to set EN pin active (LPn pin deactive)
+ *                 normally this means high power mode
+ * @update_val_lp: bits to set EN pin active and LPn pin active
+ *                 normally this means low power mode
+ * @update_val_hw: bits to set regulator pins in HW control
+ *                 SysClkReq pins and logic will choose mode
+ */
+struct ab8500_ext_regulator_info {
+	struct device *dev;
+	struct regulator_desc desc;
+	struct regulator_dev *rdev;
+	struct ab8500_ext_regulator_cfg *cfg;
+	u8 update_bank;
+	u8 update_reg;
+	u8 update_mask;
+	u8 update_val;
+	u8 update_val_hp;
+	u8 update_val_lp;
+	u8 update_val_hw;
+};
+
+static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * To satisfy both HW high power request and SW request, the regulator
+	 * must be on in high power.
+	 */
+	if (info->cfg && info->cfg->hwreq)
+		regval = info->update_val_hp;
+	else
+		regval = info->update_val;
+
+	ret = abx500_mask_and_set_register_interruptible(info->dev,
+		info->update_bank, info->update_reg,
+		info->update_mask, regval);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(info->rdev),
+			"couldn't set enable bits for regulator\n");
+		return ret;
+	}
+
+	dev_dbg(rdev_get_dev(rdev),
+		"%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+		info->desc.name, info->update_bank, info->update_reg,
+		info->update_mask, regval);
+
+	return 0;
+}
+
+static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * Set the regulator in HW request mode if configured
+	 */
+	if (info->cfg && info->cfg->hwreq)
+		regval = info->update_val_hw;
+	else
+		regval = 0;
+
+	ret = abx500_mask_and_set_register_interruptible(info->dev,
+		info->update_bank, info->update_reg,
+		info->update_mask, regval);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(info->rdev),
+			"couldn't set disable bits for regulator\n");
+		return ret;
+	}
+
+	dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):"
+		" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+		info->desc.name, info->update_bank, info->update_reg,
+		info->update_mask, regval);
+
+	return 0;
+}
+
+static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = abx500_get_register_interruptible(info->dev,
+		info->update_bank, info->update_reg, &regval);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't read 0x%x register\n", info->update_reg);
+		return ret;
+	}
+
+	dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):"
+		" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+		info->desc.name, info->update_bank, info->update_reg,
+		info->update_mask, regval);
+
+	if (((regval & info->update_mask) == info->update_val_lp) ||
+	    ((regval & info->update_mask) == info->update_val_hp))
+		return 1;
+	else
+		return 0;
+}
+
+static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev,
+					 unsigned int mode)
+{
+	int ret = 0;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	switch (mode) {
+	case REGULATOR_MODE_NORMAL:
+		regval = info->update_val_hp;
+		break;
+	case REGULATOR_MODE_IDLE:
+		regval = info->update_val_lp;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	/* If regulator is enabled and info->cfg->hwreq is set, the regulator
+	   must be on in high power, so we don't need to write the register with
+	   the same value.
+	 */
+	if (ab8500_ext_regulator_is_enabled(rdev) &&
+	    !(info->cfg && info->cfg->hwreq)) {
+		ret = abx500_mask_and_set_register_interruptible(info->dev,
+					info->update_bank, info->update_reg,
+					info->update_mask, regval);
+		if (ret < 0) {
+			dev_err(rdev_get_dev(rdev),
+				"Could not set regulator mode.\n");
+			return ret;
+		}
+
+		dev_dbg(rdev_get_dev(rdev),
+			"%s-set_mode (bank, reg, mask, value): "
+			"0x%x, 0x%x, 0x%x, 0x%x\n",
+			info->desc.name, info->update_bank, info->update_reg,
+			info->update_mask, regval);
+	}
+
+	info->update_val = regval;
+
+	return 0;
+}
+
+static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev)
+{
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+	int ret;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	if (info->update_val == info->update_val_hp)
+		ret = REGULATOR_MODE_NORMAL;
+	else if (info->update_val == info->update_val_lp)
+		ret = REGULATOR_MODE_IDLE;
+	else
+		ret = -EINVAL;
+
+	return ret;
+}
+
+static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
+				   unsigned selector)
+{
+	struct regulation_constraints *regu_constraints = rdev->constraints;
+
+	if (regu_constraints == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n");
+		return -EINVAL;
+	}
+	/* return the uV for the fixed regulators */
+	if (regu_constraints->min_uV && regu_constraints->max_uV) {
+		if (regu_constraints->min_uV == regu_constraints->max_uV)
+			return regu_constraints->min_uV;
+	}
+	return -EINVAL;
+}
+
+static struct regulator_ops ab8500_ext_regulator_ops = {
+	.enable			= ab8500_ext_regulator_enable,
+	.disable		= ab8500_ext_regulator_disable,
+	.is_enabled		= ab8500_ext_regulator_is_enabled,
+	.set_mode		= ab8500_ext_regulator_set_mode,
+	.get_mode		= ab8500_ext_regulator_get_mode,
+	.list_voltage		= ab8500_ext_list_voltage,
+};
+
+static struct ab8500_ext_regulator_info
+		ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = {
+	[AB8500_EXT_SUPPLY1] = {
+		.desc = {
+			.name		= "VEXTSUPPLY1",
+			.ops		= &ab8500_ext_regulator_ops,
+			.type		= REGULATOR_VOLTAGE,
+			.id		= AB8500_EXT_SUPPLY1,
+			.owner		= THIS_MODULE,
+			.n_voltages	= 1,
+		},
+		.update_bank		= 0x04,
+		.update_reg		= 0x08,
+		.update_mask		= 0x03,
+		.update_val		= 0x01,
+		.update_val_hp		= 0x01,
+		.update_val_lp		= 0x03,
+		.update_val_hw		= 0x02,
+	},
+	[AB8500_EXT_SUPPLY2] = {
+		.desc = {
+			.name		= "VEXTSUPPLY2",
+			.ops		= &ab8500_ext_regulator_ops,
+			.type		= REGULATOR_VOLTAGE,
+			.id		= AB8500_EXT_SUPPLY2,
+			.owner		= THIS_MODULE,
+			.n_voltages	= 1,
+		},
+		.update_bank		= 0x04,
+		.update_reg		= 0x08,
+		.update_mask		= 0x0c,
+		.update_val		= 0x04,
+		.update_val_hp		= 0x04,
+		.update_val_lp		= 0x0c,
+		.update_val_hw		= 0x08,
+	},
+	[AB8500_EXT_SUPPLY3] = {
+		.desc = {
+			.name		= "VEXTSUPPLY3",
+			.ops		= &ab8500_ext_regulator_ops,
+			.type		= REGULATOR_VOLTAGE,
+			.id		= AB8500_EXT_SUPPLY3,
+			.owner		= THIS_MODULE,
+			.n_voltages	= 1,
+		},
+		.update_bank		= 0x04,
+		.update_reg		= 0x08,
+		.update_mask		= 0x30,
+		.update_val		= 0x10,
+		.update_val_hp		= 0x10,
+		.update_val_lp		= 0x30,
+		.update_val_hw		= 0x20,
+	},
+};
+
+int ab8500_ext_regulator_init(struct platform_device *pdev)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
+	struct ab8500_platform_data *ppdata;
+	struct ab8500_regulator_platform_data *pdata;
+	struct regulator_config config = { };
+	int i, err;
+
+	if (!ab8500) {
+		dev_err(&pdev->dev, "null mfd parent\n");
+		return -EINVAL;
+	}
+	ppdata = dev_get_platdata(ab8500->dev);
+	if (!ppdata) {
+		dev_err(&pdev->dev, "null parent pdata\n");
+		return -EINVAL;
+	}
+
+	pdata = ppdata->regulator;
+	if (!pdata) {
+		dev_err(&pdev->dev, "null pdata\n");
+		return -EINVAL;
+	}
+
+	/* make sure the platform data has the correct size */
+	if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) {
+		dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
+		return -EINVAL;
+	}
+
+	/* check for AB8500 2.x */
+	if (is_ab8500_2p0_or_earlier(ab8500)) {
+		struct ab8500_ext_regulator_info *info;
+
+		/* VextSupply3LPn is inverted on AB8500 2.x */
+		info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3];
+		info->update_val = 0x30;
+		info->update_val_hp = 0x30;
+		info->update_val_lp = 0x10;
+	}
+
+	/* register all regulators */
+	for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
+		struct ab8500_ext_regulator_info *info = NULL;
+
+		/* assign per-regulator data */
+		info = &ab8500_ext_regulator_info[i];
+		info->dev = &pdev->dev;
+		info->cfg = (struct ab8500_ext_regulator_cfg *)
+			pdata->ext_regulator[i].driver_data;
+
+		config.dev = &pdev->dev;
+		config.init_data = &pdata->ext_regulator[i];
+		config.driver_data = info;
+
+		/* register regulator with framework */
+		info->rdev = regulator_register(&info->desc, &config);
+		if (IS_ERR(info->rdev)) {
+			err = PTR_ERR(info->rdev);
+			dev_err(&pdev->dev, "failed to register regulator %s\n",
+					info->desc.name);
+			/* when we fail, un-register all earlier regulators */
+			while (--i >= 0) {
+				info = &ab8500_ext_regulator_info[i];
+				regulator_unregister(info->rdev);
+			}
+			return err;
+		}
+
+		dev_dbg(rdev_get_dev(info->rdev),
+			"%s-probed\n", info->desc.name);
+	}
+
+	return 0;
+}
+
+void ab8500_ext_regulator_exit(struct platform_device *pdev)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
+		struct ab8500_ext_regulator_info *info = NULL;
+		info = &ab8500_ext_regulator_info[i];
+
+		dev_vdbg(rdev_get_dev(info->rdev),
+			"%s-remove\n", info->desc.name);
+
+		regulator_unregister(info->rdev);
+	}
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>");
+MODULE_DESCRIPTION("AB8500 external regulator driver");
+MODULE_ALIAS("platform:ab8500-ext-regulator");
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 09014f38a94..f6656b8c28b 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -5,11 +5,15 @@
  *
  * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
  *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
+ *          Daniel Willerud <daniel.willerud@stericsson.com> for ST-Ericsson
  *
  * AB8500 peripheral regulators
  *
  * AB8500 supports the following regulators:
  *   VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
+ *
+ * AB8505 supports the following regulators:
+ *   VAUX1/2/3/4/5/6, VINTCORE, VADC, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
  */
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -26,33 +30,64 @@
 #include <linux/slab.h>
 
 /**
+ * struct ab8500_shared_mode - is used when mode is shared between
+ * two regulators.
+ * @shared_regulator: pointer to the other sharing regulator
+ * @lp_mode_req: low power mode requested by this regulator
+ */
+struct ab8500_shared_mode {
+	struct ab8500_regulator_info *shared_regulator;
+	bool lp_mode_req;
+};
+
+/**
  * struct ab8500_regulator_info - ab8500 regulator information
  * @dev: device pointer
  * @desc: regulator description
  * @regulator_dev: regulator device
+ * @shared_mode: used when mode is shared between two regulators
+ * @load_lp_uA: maximum load in idle (low power) mode
  * @update_bank: bank to control on/off
  * @update_reg: register to control on/off
- * @update_mask: mask to enable/disable regulator
- * @update_val_enable: bits to enable the regulator in normal (high power) mode
+ * @update_mask: mask to enable/disable and set mode of regulator
+ * @update_val: bits holding the regulator current mode
+ * @update_val_idle: bits to enable the regulator in idle (low power) mode
+ * @update_val_normal: bits to enable the regulator in normal (high power) mode
+ * @mode_bank: bank with location of mode register
+ * @mode_reg: mode register
+ * @mode_mask: mask for setting mode
+ * @mode_val_idle: mode setting for low power
+ * @mode_val_normal: mode setting for normal power
  * @voltage_bank: bank to control regulator voltage
  * @voltage_reg: register to control regulator voltage
  * @voltage_mask: mask to control regulator voltage
- * @voltage_shift: shift to control regulator voltage
- * @delay: startup/set voltage delay in us
  */
 struct ab8500_regulator_info {
 	struct device		*dev;
 	struct regulator_desc	desc;
 	struct regulator_dev	*regulator;
+	struct ab8500_shared_mode *shared_mode;
+	int load_lp_uA;
 	u8 update_bank;
 	u8 update_reg;
 	u8 update_mask;
-	u8 update_val_enable;
+	u8 update_val;
+	u8 update_val_idle;
+	u8 update_val_normal;
+	u8 mode_bank;
+	u8 mode_reg;
+	u8 mode_mask;
+	u8 mode_val_idle;
+	u8 mode_val_normal;
 	u8 voltage_bank;
 	u8 voltage_reg;
 	u8 voltage_mask;
-	u8 voltage_shift;
-	unsigned int delay;
+	struct {
+		u8 voltage_limit;
+		u8 voltage_bank;
+		u8 voltage_reg;
+		u8 voltage_mask;
+	} expand_register;
 };
 
 /* voltage tables for the vauxn/vintcore supplies */
@@ -86,6 +121,44 @@ static const unsigned int ldo_vaux3_voltages[] = {
 	2910000,
 };
 
+static const unsigned int ldo_vaux56_voltages[] = {
+	1800000,
+	1050000,
+	1100000,
+	1200000,
+	1500000,
+	2200000,
+	2500000,
+	2790000,
+};
+
+static const unsigned int ldo_vaux3_ab8540_voltages[] = {
+	1200000,
+	1500000,
+	1800000,
+	2100000,
+	2500000,
+	2750000,
+	2790000,
+	2910000,
+	3050000,
+};
+
+static const unsigned int ldo_vaux56_ab8540_voltages[] = {
+	750000, 760000, 770000, 780000, 790000, 800000,
+	810000, 820000, 830000, 840000, 850000, 860000,
+	870000, 880000, 890000, 900000, 910000, 920000,
+	930000, 940000, 950000, 960000, 970000, 980000,
+	990000, 1000000, 1010000, 1020000, 1030000,
+	1040000, 1050000, 1060000, 1070000, 1080000,
+	1090000, 1100000, 1110000, 1120000, 1130000,
+	1140000, 1150000, 1160000, 1170000, 1180000,
+	1190000, 1200000, 1210000, 1220000, 1230000,
+	1240000, 1250000, 1260000, 1270000, 1280000,
+	1290000, 1300000, 1310000, 1320000, 1330000,
+	1340000, 1350000, 1360000, 1800000, 2790000,
+};
+
 static const unsigned int ldo_vintcore_voltages[] = {
 	1200000,
 	1225000,
@@ -96,6 +169,72 @@ static const unsigned int ldo_vintcore_voltages[] = {
 	1350000,
 };
 
+static const unsigned int ldo_sdio_voltages[] = {
+	1160000,
+	1050000,
+	1100000,
+	1500000,
+	1800000,
+	2200000,
+	2910000,
+	3050000,
+};
+
+static const unsigned int fixed_1200000_voltage[] = {
+	1200000,
+};
+
+static const unsigned int fixed_1800000_voltage[] = {
+	1800000,
+};
+
+static const unsigned int fixed_2000000_voltage[] = {
+	2000000,
+};
+
+static const unsigned int fixed_2050000_voltage[] = {
+	2050000,
+};
+
+static const unsigned int fixed_3300000_voltage[] = {
+	3300000,
+};
+
+static const unsigned int ldo_vana_voltages[] = {
+	1050000,
+	1075000,
+	1100000,
+	1125000,
+	1150000,
+	1175000,
+	1200000,
+	1225000,
+};
+
+static const unsigned int ldo_vaudio_voltages[] = {
+	2000000,
+	2100000,
+	2200000,
+	2300000,
+	2400000,
+	2500000,
+	2600000,
+	2600000,	/* Duplicated in Vaudio and IsoUicc Control register. */
+};
+
+static const unsigned int ldo_vdmic_voltages[] = {
+	1800000,
+	1900000,
+	2000000,
+	2850000,
+};
+
+static DEFINE_MUTEX(shared_mode_mutex);
+static struct ab8500_shared_mode ldo_anamic1_shared;
+static struct ab8500_shared_mode ldo_anamic2_shared;
+static struct ab8500_shared_mode ab8540_ldo_anamic1_shared;
+static struct ab8500_shared_mode ab8540_ldo_anamic2_shared;
+
 static int ab8500_regulator_enable(struct regulator_dev *rdev)
 {
 	int ret;
@@ -108,15 +247,17 @@ static int ab8500_regulator_enable(struct regulator_dev *rdev)
 
 	ret = abx500_mask_and_set_register_interruptible(info->dev,
 		info->update_bank, info->update_reg,
-		info->update_mask, info->update_val_enable);
-	if (ret < 0)
+		info->update_mask, info->update_val);
+	if (ret < 0) {
 		dev_err(rdev_get_dev(rdev),
 			"couldn't set enable bits for regulator\n");
+		return ret;
+	}
 
 	dev_vdbg(rdev_get_dev(rdev),
 		"%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
 		info->desc.name, info->update_bank, info->update_reg,
-		info->update_mask, info->update_val_enable);
+		info->update_mask, info->update_val);
 
 	return ret;
 }
@@ -134,9 +275,11 @@ static int ab8500_regulator_disable(struct regulator_dev *rdev)
 	ret = abx500_mask_and_set_register_interruptible(info->dev,
 		info->update_bank, info->update_reg,
 		info->update_mask, 0x0);
-	if (ret < 0)
+	if (ret < 0) {
 		dev_err(rdev_get_dev(rdev),
 			"couldn't set disable bits for regulator\n");
+		return ret;
+	}
 
 	dev_vdbg(rdev_get_dev(rdev),
 		"%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
@@ -172,14 +315,170 @@ static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
 		info->update_mask, regval);
 
 	if (regval & info->update_mask)
-		return true;
+		return 1;
+	else
+		return 0;
+}
+
+static unsigned int ab8500_regulator_get_optimum_mode(
+		struct regulator_dev *rdev, int input_uV,
+		int output_uV, int load_uA)
+{
+	unsigned int mode;
+
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	if (load_uA <= info->load_lp_uA)
+		mode = REGULATOR_MODE_IDLE;
+	else
+		mode = REGULATOR_MODE_NORMAL;
+
+	return mode;
+}
+
+static int ab8500_regulator_set_mode(struct regulator_dev *rdev,
+				     unsigned int mode)
+{
+	int ret = 0;
+	u8 bank, reg, mask, val;
+	bool lp_mode_req = false;
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	if (info->mode_mask) {
+		bank = info->mode_bank;
+		reg = info->mode_reg;
+		mask = info->mode_mask;
+	} else {
+		bank = info->update_bank;
+		reg = info->update_reg;
+		mask = info->update_mask;
+	}
+
+	if (info->shared_mode)
+		mutex_lock(&shared_mode_mutex);
+
+	switch (mode) {
+	case REGULATOR_MODE_NORMAL:
+		if (info->shared_mode)
+			lp_mode_req = false;
+
+		if (info->mode_mask)
+			val = info->mode_val_normal;
+		else
+			val = info->update_val_normal;
+		break;
+	case REGULATOR_MODE_IDLE:
+		if (info->shared_mode) {
+			struct ab8500_regulator_info *shared_regulator;
+
+			shared_regulator = info->shared_mode->shared_regulator;
+			if (!shared_regulator->shared_mode->lp_mode_req) {
+				/* Other regulator prevent LP mode */
+				info->shared_mode->lp_mode_req = true;
+				goto out_unlock;
+			}
+
+			lp_mode_req = true;
+		}
+
+		if (info->mode_mask)
+			val = info->mode_val_idle;
+		else
+			val = info->update_val_idle;
+		break;
+	default:
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	if (info->mode_mask || ab8500_regulator_is_enabled(rdev)) {
+		ret = abx500_mask_and_set_register_interruptible(info->dev,
+			bank, reg, mask, val);
+		if (ret < 0) {
+			dev_err(rdev_get_dev(rdev),
+				"couldn't set regulator mode\n");
+			goto out_unlock;
+		}
+
+		dev_vdbg(rdev_get_dev(rdev),
+			"%s-set_mode (bank, reg, mask, value): "
+			"0x%x, 0x%x, 0x%x, 0x%x\n",
+			info->desc.name, bank, reg,
+			mask, val);
+	}
+
+	if (!info->mode_mask)
+		info->update_val = val;
+
+	if (info->shared_mode)
+		info->shared_mode->lp_mode_req = lp_mode_req;
+
+out_unlock:
+	if (info->shared_mode)
+		mutex_unlock(&shared_mode_mutex);
+
+	return ret;
+}
+
+static unsigned int ab8500_regulator_get_mode(struct regulator_dev *rdev)
+{
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+	int ret;
+	u8 val;
+	u8 val_normal;
+	u8 val_idle;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	/* Need special handling for shared mode */
+	if (info->shared_mode) {
+		if (info->shared_mode->lp_mode_req)
+			return REGULATOR_MODE_IDLE;
+		else
+			return REGULATOR_MODE_NORMAL;
+	}
+
+	if (info->mode_mask) {
+		/* Dedicated register for handling mode */
+		ret = abx500_get_register_interruptible(info->dev,
+		info->mode_bank, info->mode_reg, &val);
+		val = val & info->mode_mask;
+
+		val_normal = info->mode_val_normal;
+		val_idle = info->mode_val_idle;
+	} else {
+		/* Mode register same as enable register */
+		val = info->update_val;
+		val_normal = info->update_val_normal;
+		val_idle = info->update_val_idle;
+	}
+
+	if (val == val_normal)
+		ret = REGULATOR_MODE_NORMAL;
+	else if (val == val_idle)
+		ret = REGULATOR_MODE_IDLE;
 	else
-		return false;
+		ret = -EINVAL;
+
+	return ret;
 }
 
 static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
 {
-	int ret, val;
+	int ret, voltage_shift;
 	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 	u8 regval;
 
@@ -188,6 +487,8 @@ static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
 		return -EINVAL;
 	}
 
+	voltage_shift = ffs(info->voltage_mask) - 1;
+
 	ret = abx500_get_register_interruptible(info->dev,
 			info->voltage_bank, info->voltage_reg, &regval);
 	if (ret < 0) {
@@ -201,16 +502,62 @@ static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
 		"0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n",
 		info->desc.name, info->voltage_bank,
 		info->voltage_reg, info->voltage_mask,
-		info->voltage_shift, regval);
+		voltage_shift, regval);
 
-	val = regval & info->voltage_mask;
-	return val >> info->voltage_shift;
+	return (regval & info->voltage_mask) >> voltage_shift;
+}
+
+static int ab8540_aux3_regulator_get_voltage_sel(struct regulator_dev *rdev)
+{
+	int ret, voltage_shift;
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval, regval_expand;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = abx500_get_register_interruptible(info->dev,
+			info->expand_register.voltage_bank,
+			info->expand_register.voltage_reg, &regval_expand);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't read voltage expand reg for regulator\n");
+		return ret;
+	}
+
+	dev_vdbg(rdev_get_dev(rdev),
+		 "%s-get_voltage expand (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
+		 info->desc.name, info->expand_register.voltage_bank,
+		 info->expand_register.voltage_reg,
+		 info->expand_register.voltage_mask, regval_expand);
+
+	if (regval_expand & info->expand_register.voltage_mask)
+		return info->expand_register.voltage_limit;
+
+	ret = abx500_get_register_interruptible(info->dev,
+			info->voltage_bank, info->voltage_reg, &regval);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't read voltage reg for regulator\n");
+		return ret;
+	}
+
+	dev_vdbg(rdev_get_dev(rdev),
+		 "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
+		 info->desc.name, info->voltage_bank, info->voltage_reg,
+		 info->voltage_mask, regval);
+
+	voltage_shift = ffs(info->voltage_mask) - 1;
+
+	return (regval & info->voltage_mask) >> voltage_shift;
 }
 
 static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
 					    unsigned selector)
 {
-	int ret;
+	int ret, voltage_shift;
 	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 	u8 regval;
 
@@ -219,8 +566,10 @@ static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
+	voltage_shift = ffs(info->voltage_mask) - 1;
+
 	/* set the registers for the request */
-	regval = (u8)selector << info->voltage_shift;
+	regval = (u8)selector << voltage_shift;
 	ret = abx500_mask_and_set_register_interruptible(info->dev,
 			info->voltage_bank, info->voltage_reg,
 			info->voltage_mask, regval);
@@ -237,32 +586,121 @@ static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
 	return ret;
 }
 
-static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
-					     unsigned int old_sel,
-					     unsigned int new_sel)
+static int ab8540_aux3_regulator_set_voltage_sel(struct regulator_dev *rdev,
+						unsigned selector)
 {
+	int ret;
 	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval, regval_expand;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	if (selector < info->expand_register.voltage_limit) {
+		int voltage_shift = ffs(info->voltage_mask) - 1;
+
+		regval = (u8)selector << voltage_shift;
+		ret = abx500_mask_and_set_register_interruptible(info->dev,
+					info->voltage_bank, info->voltage_reg,
+					info->voltage_mask, regval);
+		if (ret < 0) {
+			dev_err(rdev_get_dev(rdev),
+				"couldn't set voltage reg for regulator\n");
+			return ret;
+		}
 
-	return info->delay;
+		dev_vdbg(rdev_get_dev(rdev),
+			 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
+			 info->desc.name, info->voltage_bank, info->voltage_reg,
+			 info->voltage_mask, regval);
+
+		regval_expand = 0;
+	} else {
+		regval_expand = info->expand_register.voltage_mask;
+	}
+
+	ret = abx500_mask_and_set_register_interruptible(info->dev,
+				info->expand_register.voltage_bank,
+				info->expand_register.voltage_reg,
+				info->expand_register.voltage_mask,
+				regval_expand);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't set expand voltage reg for regulator\n");
+		return ret;
+	}
+
+	dev_vdbg(rdev_get_dev(rdev),
+		 "%s-set_voltage expand (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
+		 info->desc.name, info->expand_register.voltage_bank,
+		 info->expand_register.voltage_reg,
+		 info->expand_register.voltage_mask, regval_expand);
+
+	return 0;
 }
 
-static struct regulator_ops ab8500_regulator_ops = {
+static struct regulator_ops ab8500_regulator_volt_mode_ops = {
+	.enable			= ab8500_regulator_enable,
+	.disable		= ab8500_regulator_disable,
+	.is_enabled		= ab8500_regulator_is_enabled,
+	.get_optimum_mode	= ab8500_regulator_get_optimum_mode,
+	.set_mode		= ab8500_regulator_set_mode,
+	.get_mode		= ab8500_regulator_get_mode,
+	.get_voltage_sel 	= ab8500_regulator_get_voltage_sel,
+	.set_voltage_sel	= ab8500_regulator_set_voltage_sel,
+	.list_voltage		= regulator_list_voltage_table,
+};
+
+static struct regulator_ops ab8540_aux3_regulator_volt_mode_ops = {
+	.enable		= ab8500_regulator_enable,
+	.disable	= ab8500_regulator_disable,
+	.get_optimum_mode	= ab8500_regulator_get_optimum_mode,
+	.set_mode	= ab8500_regulator_set_mode,
+	.get_mode	= ab8500_regulator_get_mode,
+	.is_enabled	= ab8500_regulator_is_enabled,
+	.get_voltage_sel = ab8540_aux3_regulator_get_voltage_sel,
+	.set_voltage_sel = ab8540_aux3_regulator_set_voltage_sel,
+	.list_voltage	= regulator_list_voltage_table,
+};
+
+static struct regulator_ops ab8500_regulator_volt_ops = {
 	.enable		= ab8500_regulator_enable,
 	.disable	= ab8500_regulator_disable,
 	.is_enabled	= ab8500_regulator_is_enabled,
 	.get_voltage_sel = ab8500_regulator_get_voltage_sel,
 	.set_voltage_sel = ab8500_regulator_set_voltage_sel,
 	.list_voltage	= regulator_list_voltage_table,
-	.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
 };
 
-static struct regulator_ops ab8500_regulator_fixed_ops = {
+static struct regulator_ops ab8500_regulator_mode_ops = {
+	.enable			= ab8500_regulator_enable,
+	.disable		= ab8500_regulator_disable,
+	.is_enabled		= ab8500_regulator_is_enabled,
+	.get_optimum_mode	= ab8500_regulator_get_optimum_mode,
+	.set_mode		= ab8500_regulator_set_mode,
+	.get_mode		= ab8500_regulator_get_mode,
+	.list_voltage		= regulator_list_voltage_table,
+};
+
+static struct regulator_ops ab8500_regulator_ops = {
+	.enable			= ab8500_regulator_enable,
+	.disable		= ab8500_regulator_disable,
+	.is_enabled		= ab8500_regulator_is_enabled,
+	.list_voltage		= regulator_list_voltage_table,
+};
+
+static struct regulator_ops ab8500_regulator_anamic_mode_ops = {
 	.enable		= ab8500_regulator_enable,
 	.disable	= ab8500_regulator_disable,
 	.is_enabled	= ab8500_regulator_is_enabled,
-	.list_voltage	= regulator_list_voltage_linear,
+	.set_mode	= ab8500_regulator_set_mode,
+	.get_mode	= ab8500_regulator_get_mode,
+	.list_voltage	= regulator_list_voltage_table,
 };
 
+/* AB8500 regulator information */
 static struct ab8500_regulator_info
 		ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
 	/*
@@ -274,17 +712,21 @@ static struct ab8500_regulator_info
 	[AB8500_LDO_AUX1] = {
 		.desc = {
 			.name		= "LDO-AUX1",
-			.ops		= &ab8500_regulator_ops,
+			.ops		= &ab8500_regulator_volt_mode_ops,
 			.type		= REGULATOR_VOLTAGE,
 			.id		= AB8500_LDO_AUX1,
 			.owner		= THIS_MODULE,
 			.n_voltages	= ARRAY_SIZE(ldo_vauxn_voltages),
 			.volt_table	= ldo_vauxn_voltages,
+			.enable_time	= 200,
 		},
+		.load_lp_uA		= 5000,
 		.update_bank		= 0x04,
 		.update_reg		= 0x09,
 		.update_mask		= 0x03,
-		.update_val_enable	= 0x01,
+		.update_val		= 0x01,
+		.update_val_idle	= 0x03,
+		.update_val_normal	= 0x01,
 		.voltage_bank		= 0x04,
 		.voltage_reg		= 0x1f,
 		.voltage_mask		= 0x0f,
@@ -292,17 +734,21 @@ static struct ab8500_regulator_info
 	[AB8500_LDO_AUX2] = {
 		.desc = {
 			.name		= "LDO-AUX2",
-			.ops		= &ab8500_regulator_ops,
+			.ops		= &ab8500_regulator_volt_mode_ops,
 			.type		= REGULATOR_VOLTAGE,
 			.id		= AB8500_LDO_AUX2,
 			.owner		= THIS_MODULE,
 			.n_voltages	= ARRAY_SIZE(ldo_vauxn_voltages),
 			.volt_table	= ldo_vauxn_voltages,
+			.enable_time	= 200,
 		},
+		.load_lp_uA		= 5000,
 		.update_bank		= 0x04,
 		.update_reg		= 0x09,
 		.update_mask		= 0x0c,
-		.update_val_enable	= 0x04,
+		.update_val		= 0x04,
+		.update_val_idle	= 0x0c,
+		.update_val_normal	= 0x04,
 		.voltage_bank		= 0x04,
 		.voltage_reg		= 0x20,
 		.voltage_mask		= 0x0f,
@@ -310,17 +756,21 @@ static struct ab8500_regulator_info
 	[AB8500_LDO_AUX3] = {
 		.desc = {
 			.name		= "LDO-AUX3",
-			.ops		= &ab8500_regulator_ops,
+			.op