[mirror_ubuntu-jammy-kernel.git] / drivers / regulator / mc13783-regulator.c

/*
 * Regulator Driver for Freescale MC13783 PMIC
 *
 * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
 * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/mfd/mc13783.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/err.h>

#define MC13783_REG_SWITCHERS5			29
#define MC13783_REG_SWITCHERS5_SW3EN			(1 << 20)
#define MC13783_REG_SWITCHERS5_SW3VSEL			18
#define MC13783_REG_SWITCHERS5_SW3VSEL_M		(3 << 18)

#define MC13783_REG_REGULATORSETTING0		30
#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL		2
#define MC13783_REG_REGULATORSETTING0_VDIGVSEL		4
#define MC13783_REG_REGULATORSETTING0_VGENVSEL		6
#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL	9
#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL	11
#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL		13
#define MC13783_REG_REGULATORSETTING0_VSIMVSEL		14
#define MC13783_REG_REGULATORSETTING0_VESIMVSEL		15
#define MC13783_REG_REGULATORSETTING0_VCAMVSEL		16

#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M	(3 << 2)
#define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M	(3 << 4)
#define MC13783_REG_REGULATORSETTING0_VGENVSEL_M	(7 << 6)
#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M	(3 << 9)
#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M	(3 << 11)
#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M	(1 << 13)
#define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M	(1 << 14)
#define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M	(1 << 15)
#define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M	(7 << 16)

#define MC13783_REG_REGULATORSETTING1		31
#define MC13783_REG_REGULATORSETTING1_VVIBVSEL		0
#define MC13783_REG_REGULATORSETTING1_VRF1VSEL		2
#define MC13783_REG_REGULATORSETTING1_VRF2VSEL		4
#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL		6
#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL		9

#define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M	(3 << 0)
#define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M	(3 << 2)
#define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M	(3 << 4)
#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M	(7 << 6)
#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M	(7 << 9)

#define MC13783_REG_REGULATORMODE0		32
#define MC13783_REG_REGULATORMODE0_VAUDIOEN		(1 << 0)
#define MC13783_REG_REGULATORMODE0_VIOHIEN		(1 << 3)
#define MC13783_REG_REGULATORMODE0_VIOLOEN		(1 << 6)
#define MC13783_REG_REGULATORMODE0_VDIGEN		(1 << 9)
#define MC13783_REG_REGULATORMODE0_VGENEN		(1 << 12)
#define MC13783_REG_REGULATORMODE0_VRFDIGEN		(1 << 15)
#define MC13783_REG_REGULATORMODE0_VRFREFEN		(1 << 18)
#define MC13783_REG_REGULATORMODE0_VRFCPEN		(1 << 21)

#define MC13783_REG_REGULATORMODE1		33
#define MC13783_REG_REGULATORMODE1_VSIMEN		(1 << 0)
#define MC13783_REG_REGULATORMODE1_VESIMEN		(1 << 3)
#define MC13783_REG_REGULATORMODE1_VCAMEN		(1 << 6)
#define MC13783_REG_REGULATORMODE1_VRFBGEN		(1 << 9)
#define MC13783_REG_REGULATORMODE1_VVIBEN		(1 << 11)
#define MC13783_REG_REGULATORMODE1_VRF1EN		(1 << 12)
#define MC13783_REG_REGULATORMODE1_VRF2EN		(1 << 15)
#define MC13783_REG_REGULATORMODE1_VMMC1EN		(1 << 18)
#define MC13783_REG_REGULATORMODE1_VMMC2EN		(1 << 21)

#define MC13783_REG_POWERMISC			34
#define MC13783_REG_POWERMISC_GPO1EN			(1 << 6)
#define MC13783_REG_POWERMISC_GPO2EN			(1 << 8)
#define MC13783_REG_POWERMISC_GPO3EN			(1 << 10)
#define MC13783_REG_POWERMISC_GPO4EN			(1 << 12)

struct mc13783_regulator {
	struct regulator_desc desc;
	int reg;
	int enable_bit;
	int vsel_reg;
	int vsel_shift;
	int vsel_mask;
	int const *voltages;
};

/* Voltage Values */
static const int const mc13783_sw3_val[] = {
	5000000, 5000000, 5000000, 5500000,
};

static const int const mc13783_vaudio_val[] = {
	2775000,
};

static const int const mc13783_viohi_val[] = {
	2775000,
};

static const int const mc13783_violo_val[] = {
	1200000, 1300000, 1500000, 1800000,
};

static const int const mc13783_vdig_val[] = {
	1200000, 1300000, 1500000, 1800000,
};

static const int const mc13783_vgen_val[] = {
	1200000, 1300000, 1500000, 1800000,
	1100000, 2000000, 2775000, 2400000,
};

static const int const mc13783_vrfdig_val[] = {
	1200000, 1500000, 1800000, 1875000,
};

static const int const mc13783_vrfref_val[] = {
	2475000, 2600000, 2700000, 2775000,
};

static const int const mc13783_vrfcp_val[] = {
	2700000, 2775000,
};

static const int const mc13783_vsim_val[] = {
	1800000, 2900000, 3000000,
};

static const int const mc13783_vesim_val[] = {
	1800000, 2900000,
};

static const int const mc13783_vcam_val[] = {
	1500000, 1800000, 2500000, 2550000,
	2600000, 2750000, 2800000, 3000000,
};

static const int const mc13783_vrfbg_val[] = {
	1250000,
};

static const int const mc13783_vvib_val[] = {
	1300000, 1800000, 2000000, 3000000,
};

static const int const mc13783_vmmc_val[] = {
	1600000, 1800000, 2000000, 2600000,
	2700000, 2800000, 2900000, 3000000,
};

static const int const mc13783_vrf_val[] = {
	1500000, 1875000, 2700000, 2775000,
};

static struct regulator_ops mc13783_regulator_ops;
static struct regulator_ops mc13783_fixed_regulator_ops;

#define MC13783_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages)	\
	[MC13783_ ## prefix ## _ ## _name] = {				\
		.desc = {						\
			.name = #prefix "_" #_name,			\
			.n_voltages = ARRAY_SIZE(_voltages),		\
			.ops = &mc13783_regulator_ops,			\
			.type = REGULATOR_VOLTAGE,			\
			.id = MC13783_ ## prefix ## _ ## _name,		\
			.owner = THIS_MODULE,				\
		},							\
		.reg = MC13783_REG_ ## _reg,				\
		.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN,	\
		.vsel_reg = MC13783_REG_ ## _vsel_reg,			\
		.vsel_shift = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL,\
		.vsel_mask = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL_M,\
		.voltages =  _voltages,					\
	}

#define MC13783_FIXED_DEFINE(prefix, _name, _reg, _voltages)		\
	[MC13783_ ## prefix ## _ ## _name] = {				\
		.desc = {						\
			.name = #prefix "_" #_name,			\
			.n_voltages = ARRAY_SIZE(_voltages),		\
			.ops = &mc13783_fixed_regulator_ops,		\
			.type = REGULATOR_VOLTAGE,			\
			.id = MC13783_ ## prefix ## _ ## _name,		\
			.owner = THIS_MODULE,				\
		},							\
		.reg = MC13783_REG_ ## _reg,				\
		.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN,	\
		.voltages =  _voltages,					\
	}

#define MC13783_GPO_DEFINE(prefix, _name, _reg)				\
	[MC13783_ ## prefix ## _ ## _name] = {				\
		.desc = {						\
			.name = #prefix "_" #_name,			\
			.ops = &mc13783_regulator_ops,			\
			.type = REGULATOR_VOLTAGE,			\
			.id = MC13783_ ## prefix ## _ ## _name,		\
			.owner = THIS_MODULE,				\
		},							\
		.reg = MC13783_REG_ ## _reg,				\
		.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN,	\
	}

#define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages)		\
	MC13783_DEFINE(SW, _name, _reg, _vsel_reg, _voltages)
#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages)		\
	MC13783_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages)

static struct mc13783_regulator mc13783_regulators[] = {
	MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),

	MC13783_FIXED_DEFINE(REGU, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
	MC13783_FIXED_DEFINE(REGU, VIOHI, REGULATORMODE0, mc13783_viohi_val),
	MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0,	\
			    mc13783_violo_val),
	MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0,	\
			    mc13783_vdig_val),
	MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0,	\
			    mc13783_vgen_val),
	MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0,	\
			    mc13783_vrfdig_val),
	MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0,	\
			    mc13783_vrfref_val),
	MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0,	\
			    mc13783_vrfcp_val),
	MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0,	\
			    mc13783_vsim_val),
	MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0,	\
			    mc13783_vesim_val),
	MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0,	\
			    mc13783_vcam_val),
	MC13783_FIXED_DEFINE(REGU, VRFBG, REGULATORMODE1, mc13783_vrfbg_val),
	MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1,	\
			    mc13783_vvib_val),
	MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1,	\
			    mc13783_vrf_val),
	MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1,	\
			    mc13783_vrf_val),
	MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1,	\
			    mc13783_vmmc_val),
	MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1,	\
			    mc13783_vmmc_val),
	MC13783_GPO_DEFINE(REGU, GPO1, POWERMISC),
	MC13783_GPO_DEFINE(REGU, GPO2, POWERMISC),
	MC13783_GPO_DEFINE(REGU, GPO3, POWERMISC),
	MC13783_GPO_DEFINE(REGU, GPO4, POWERMISC),
};

struct mc13783_regulator_priv {
	struct mc13783 *mc13783;
	struct regulator_dev *regulators[];
};

static int mc13783_regulator_enable(struct regulator_dev *rdev)
{
	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
	int id = rdev_get_id(rdev);
	int ret;

	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);

	mc13783_lock(priv->mc13783);
	ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
			mc13783_regulators[id].enable_bit,
			mc13783_regulators[id].enable_bit);
	mc13783_unlock(priv->mc13783);

	return ret;
}

static int mc13783_regulator_disable(struct regulator_dev *rdev)
{
	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
	int id = rdev_get_id(rdev);
	int ret;

	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);

	mc13783_lock(priv->mc13783);
	ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
			mc13783_regulators[id].enable_bit, 0);
	mc13783_unlock(priv->mc13783);

	return ret;
}

static int mc13783_regulator_is_enabled(struct regulator_dev *rdev)
{
	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
	int ret, id = rdev_get_id(rdev);
	unsigned int val;

	mc13783_lock(priv->mc13783);
	ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
	mc13783_unlock(priv->mc13783);

	if (ret)
		return ret;

	return (val & mc13783_regulators[id].enable_bit) != 0;
}

static int mc13783_regulator_list_voltage(struct regulator_dev *rdev,
						unsigned selector)
{
	int id = rdev_get_id(rdev);

	if (selector >= mc13783_regulators[id].desc.n_voltages)
		return -EINVAL;

	return mc13783_regulators[id].voltages[selector];
}

static int mc13783_get_best_voltage_index(struct regulator_dev *rdev,
						int min_uV, int max_uV)
{
	int reg_id = rdev_get_id(rdev);
	int i;
	int bestmatch;
	int bestindex;

	/*
	 * Locate the minimum voltage fitting the criteria on
	 * this regulator. The switchable voltages are not
	 * in strict falling order so we need to check them
	 * all for the best match.
	 */
	bestmatch = INT_MAX;
	bestindex = -1;
	for (i = 0; i < mc13783_regulators[reg_id].desc.n_voltages; i++) {
		if (mc13783_regulators[reg_id].voltages[i] >= min_uV &&
		    mc13783_regulators[reg_id].voltages[i] < bestmatch) {
			bestmatch = mc13783_regulators[reg_id].voltages[i];
			bestindex = i;
		}
	}

	if (bestindex < 0 || bestmatch > max_uV) {
		dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
				min_uV, max_uV);
		return -EINVAL;
	}
	return bestindex;
}

static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
						int min_uV, int max_uV)
{
	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
	int value, id = rdev_get_id(rdev);
	int ret;

	dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
		__func__, id, min_uV, max_uV);

	/* Find the best index */
	value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV);
	dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value);
	if (value < 0)
		return value;

	mc13783_lock(priv->mc13783);
	ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
			mc13783_regulators[id].vsel_mask,
			value << mc13783_regulators[id].vsel_shift);
	mc13783_unlock(priv->mc13783);

	return ret;
}

static int mc13783_regulator_get_voltage(struct regulator_dev *rdev)
{
	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
	int ret, id = rdev_get_id(rdev);
	unsigned int val;

	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);

	mc13783_lock(priv->mc13783);
	ret = mc13783_reg_read(priv->mc13783,
				mc13783_regulators[id].vsel_reg, &val);
	mc13783_unlock(priv->mc13783);

	if (ret)
		return ret;

	val = (val & mc13783_regulators[id].vsel_mask)
		>> mc13783_regulators[id].vsel_shift;

	dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);

	BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages);

	return mc13783_regulators[id].voltages[val];
}

static struct regulator_ops mc13783_regulator_ops = {
	.enable = mc13783_regulator_enable,
	.disable = mc13783_regulator_disable,
	.is_enabled = mc13783_regulator_is_enabled,
	.list_voltage = mc13783_regulator_list_voltage,
	.set_voltage = mc13783_regulator_set_voltage,
	.get_voltage = mc13783_regulator_get_voltage,
};

static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
						int min_uV, int max_uV)
{
	int id = rdev_get_id(rdev);

	dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
		__func__, id, min_uV, max_uV);

	if (min_uV > mc13783_regulators[id].voltages[0] &&
	    max_uV < mc13783_regulators[id].voltages[0])
		return 0;
	else
		return -EINVAL;
}

static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev)
{
	int id = rdev_get_id(rdev);

	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);

	return mc13783_regulators[id].voltages[0];
}

static struct regulator_ops mc13783_fixed_regulator_ops = {
	.enable = mc13783_regulator_enable,
	.disable = mc13783_regulator_disable,
	.is_enabled = mc13783_regulator_is_enabled,
	.list_voltage = mc13783_regulator_list_voltage,
	.set_voltage = mc13783_fixed_regulator_set_voltage,
	.get_voltage = mc13783_fixed_regulator_get_voltage,
};

static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
{
	struct mc13783_regulator_priv *priv;
	struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
	struct mc13783_regulator_platform_data *pdata =
		dev_get_platdata(&pdev->dev);
	struct mc13783_regulator_init_data *init_data;
	int i, ret;

	dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);

	priv = kzalloc(sizeof(*priv) +
			pdata->num_regulators * sizeof(priv->regulators[0]),
			GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->mc13783 = mc13783;

	for (i = 0; i < pdata->num_regulators; i++) {
		init_data = &pdata->regulators[i];
		priv->regulators[i] = regulator_register(
				&mc13783_regulators[init_data->id].desc,
				&pdev->dev, init_data->init_data, priv);

		if (IS_ERR(priv->regulators[i])) {
			dev_err(&pdev->dev, "failed to register regulator %s\n",
				mc13783_regulators[i].desc.name);
			ret = PTR_ERR(priv->regulators[i]);
			goto err;
		}
	}

	platform_set_drvdata(pdev, priv);

	return 0;
err:
	while (--i >= 0)
		regulator_unregister(priv->regulators[i]);

	kfree(priv);

	return ret;
}

static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
{
	struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev);
	struct mc13783_regulator_platform_data *pdata =
		dev_get_platdata(&pdev->dev);
	int i;

	for (i = 0; i < pdata->num_regulators; i++)
		regulator_unregister(priv->regulators[i]);

	return 0;
}

static struct platform_driver mc13783_regulator_driver = {
	.driver	= {
		.name	= "mc13783-regulator",
		.owner	= THIS_MODULE,
	},
	.remove		= __devexit_p(mc13783_regulator_remove),
	.probe		= mc13783_regulator_probe,
};

static int __init mc13783_regulator_init(void)
{
	return platform_driver_register(&mc13783_regulator_driver);
}
subsys_initcall(mc13783_regulator_init);

static void __exit mc13783_regulator_exit(void)
{
	platform_driver_unregister(&mc13783_regulator_driver);
}
module_exit(mc13783_regulator_exit);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de");
MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
MODULE_ALIAS("platform:mc13783-regulator");
Commit	Line	Data
295c08bc SH	1	/*
	2	* Regulator Driver for Freescale MC13783 PMIC
	3	*
	4	* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
1bd588fd	5	* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
295c08bc SH	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
a10099bc	12	#include <linux/mfd/mc13783.h>
295c08bc SH	13	#include <linux/regulator/machine.h>
	14	#include <linux/regulator/driver.h>
	15	#include <linux/platform_device.h>
295c08bc SH	16	#include <linux/kernel.h>
	17	#include <linux/init.h>
	18	#include <linux/err.h>
	19
a10099bc UKK	20	#define MC13783_REG_SWITCHERS5 29
a10099bc UKK	21	#define MC13783_REG_SWITCHERS5_SW3EN (1 << 20)
1bd588fd AP	22	#define MC13783_REG_SWITCHERS5_SW3VSEL 18
	23	#define MC13783_REG_SWITCHERS5_SW3VSEL_M (3 << 18)
	24
	25	#define MC13783_REG_REGULATORSETTING0 30
	26	#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL 2
	27	#define MC13783_REG_REGULATORSETTING0_VDIGVSEL 4
	28	#define MC13783_REG_REGULATORSETTING0_VGENVSEL 6
	29	#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL 9
	30	#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL 11
	31	#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL 13
	32	#define MC13783_REG_REGULATORSETTING0_VSIMVSEL 14
	33	#define MC13783_REG_REGULATORSETTING0_VESIMVSEL 15
	34	#define MC13783_REG_REGULATORSETTING0_VCAMVSEL 16
	35
	36	#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M (3 << 2)
	37	#define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M (3 << 4)
	38	#define MC13783_REG_REGULATORSETTING0_VGENVSEL_M (7 << 6)
	39	#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M (3 << 9)
	40	#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M (3 << 11)
	41	#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M (1 << 13)
	42	#define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M (1 << 14)
	43	#define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M (1 << 15)
	44	#define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M (7 << 16)
	45
	46	#define MC13783_REG_REGULATORSETTING1 31
	47	#define MC13783_REG_REGULATORSETTING1_VVIBVSEL 0
	48	#define MC13783_REG_REGULATORSETTING1_VRF1VSEL 2
	49	#define MC13783_REG_REGULATORSETTING1_VRF2VSEL 4
	50	#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL 6
	51	#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL 9
	52
	53	#define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M (3 << 0)
	54	#define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M (3 << 2)
	55	#define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M (3 << 4)
	56	#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M (7 << 6)
	57	#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M (7 << 9)
a10099bc UKK	58
	59	#define MC13783_REG_REGULATORMODE0 32
	60	#define MC13783_REG_REGULATORMODE0_VAUDIOEN (1 << 0)
	61	#define MC13783_REG_REGULATORMODE0_VIOHIEN (1 << 3)
	62	#define MC13783_REG_REGULATORMODE0_VIOLOEN (1 << 6)
	63	#define MC13783_REG_REGULATORMODE0_VDIGEN (1 << 9)
	64	#define MC13783_REG_REGULATORMODE0_VGENEN (1 << 12)
	65	#define MC13783_REG_REGULATORMODE0_VRFDIGEN (1 << 15)
	66	#define MC13783_REG_REGULATORMODE0_VRFREFEN (1 << 18)
	67	#define MC13783_REG_REGULATORMODE0_VRFCPEN (1 << 21)
	68
	69	#define MC13783_REG_REGULATORMODE1 33
	70	#define MC13783_REG_REGULATORMODE1_VSIMEN (1 << 0)
	71	#define MC13783_REG_REGULATORMODE1_VESIMEN (1 << 3)
	72	#define MC13783_REG_REGULATORMODE1_VCAMEN (1 << 6)
	73	#define MC13783_REG_REGULATORMODE1_VRFBGEN (1 << 9)
	74	#define MC13783_REG_REGULATORMODE1_VVIBEN (1 << 11)
	75	#define MC13783_REG_REGULATORMODE1_VRF1EN (1 << 12)
	76	#define MC13783_REG_REGULATORMODE1_VRF2EN (1 << 15)
	77	#define MC13783_REG_REGULATORMODE1_VMMC1EN (1 << 18)
	78	#define MC13783_REG_REGULATORMODE1_VMMC2EN (1 << 21)
	79
	80	#define MC13783_REG_POWERMISC 34
	81	#define MC13783_REG_POWERMISC_GPO1EN (1 << 6)
	82	#define MC13783_REG_POWERMISC_GPO2EN (1 << 8)
	83	#define MC13783_REG_POWERMISC_GPO3EN (1 << 10)
	84	#define MC13783_REG_POWERMISC_GPO4EN (1 << 12)
	85
295c08bc SH	86	struct mc13783_regulator {
	87	struct regulator_desc desc;
	88	int reg;
	89	int enable_bit;
1bd588fd AP	90	int vsel_reg;
	91	int vsel_shift;
	92	int vsel_mask;
	93	int const *voltages;
	94	};
	95
	96	/* Voltage Values */
	97	static const int const mc13783_sw3_val[] = {
	98	5000000, 5000000, 5000000, 5500000,
	99	};
	100
	101	static const int const mc13783_vaudio_val[] = {
	102	2775000,
	103	};
	104
	105	static const int const mc13783_viohi_val[] = {
	106	2775000,
	107	};
	108
	109	static const int const mc13783_violo_val[] = {
	110	1200000, 1300000, 1500000, 1800000,
	111	};
	112
	113	static const int const mc13783_vdig_val[] = {
	114	1200000, 1300000, 1500000, 1800000,
	115	};
	116
	117	static const int const mc13783_vgen_val[] = {
	118	1200000, 1300000, 1500000, 1800000,
	119	1100000, 2000000, 2775000, 2400000,
	120	};
	121
	122	static const int const mc13783_vrfdig_val[] = {
	123	1200000, 1500000, 1800000, 1875000,
	124	};
	125
	126	static const int const mc13783_vrfref_val[] = {
	127	2475000, 2600000, 2700000, 2775000,
	128	};
	129
	130	static const int const mc13783_vrfcp_val[] = {
	131	2700000, 2775000,
	132	};
	133
	134	static const int const mc13783_vsim_val[] = {
	135	1800000, 2900000, 3000000,
	136	};
	137
	138	static const int const mc13783_vesim_val[] = {
	139	1800000, 2900000,
	140	};
	141
	142	static const int const mc13783_vcam_val[] = {
	143	1500000, 1800000, 2500000, 2550000,
	144	2600000, 2750000, 2800000, 3000000,
	145	};
	146
	147	static const int const mc13783_vrfbg_val[] = {
	148	1250000,
	149	};
	150
	151	static const int const mc13783_vvib_val[] = {
	152	1300000, 1800000, 2000000, 3000000,
	153	};
154
155	static const int const mc13783_vmmc_val[] = {
156	1600000, 1800000, 2000000, 2600000,
157	2700000, 2800000, 2900000, 3000000,
158	};
159
160	static const int const mc13783_vrf_val[] = {
161	1500000, 1875000, 2700000, 2775000,
295c08bc SH	162	};
	163
	164	static struct regulator_ops mc13783_regulator_ops;
1bd588fd AP	165	static struct regulator_ops mc13783_fixed_regulator_ops;
	166
	167	#define MC13783_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages) \
	168	[MC13783_ ## prefix ## _ ## _name] = { \
	169	.desc = { \
	170	.name = #prefix "_" #_name, \
	171	.n_voltages = ARRAY_SIZE(_voltages), \
	172	.ops = &mc13783_regulator_ops, \
	173	.type = REGULATOR_VOLTAGE, \
	174	.id = MC13783_ ## prefix ## _ ## _name, \
	175	.owner = THIS_MODULE, \
	176	}, \
	177	.reg = MC13783_REG_ ## _reg, \
	178	.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
	179	.vsel_reg = MC13783_REG_ ## _vsel_reg, \
	180	.vsel_shift = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL,\
	181	.vsel_mask = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL_M,\
	182	.voltages = _voltages, \
	183	}
295c08bc	184
1bd588fd AP	185	#define MC13783_FIXED_DEFINE(prefix, _name, _reg, _voltages) \
	186	[MC13783_ ## prefix ## _ ## _name] = { \
	187	.desc = { \
	188	.name = #prefix "_" #_name, \
	189	.n_voltages = ARRAY_SIZE(_voltages), \
	190	.ops = &mc13783_fixed_regulator_ops, \
	191	.type = REGULATOR_VOLTAGE, \
	192	.id = MC13783_ ## prefix ## _ ## _name, \
	193	.owner = THIS_MODULE, \
	194	}, \
	195	.reg = MC13783_REG_ ## _reg, \
	196	.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
	197	.voltages = _voltages, \
	198	}
	199
	200	#define MC13783_GPO_DEFINE(prefix, _name, _reg) \
a10099bc UKK	201	[MC13783_ ## prefix ## _ ## _name] = { \
	202	.desc = { \
	203	.name = #prefix "_" #_name, \
	204	.ops = &mc13783_regulator_ops, \
	205	.type = REGULATOR_VOLTAGE, \
	206	.id = MC13783_ ## prefix ## _ ## _name, \
	207	.owner = THIS_MODULE, \
	208	}, \
	209	.reg = MC13783_REG_ ## _reg, \
	210	.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
	211	}
	212
1bd588fd AP	213	#define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \
	214	MC13783_DEFINE(SW, _name, _reg, _vsel_reg, _voltages)
	215	#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
	216	MC13783_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages)
a10099bc	217
295c08bc	218	static struct mc13783_regulator mc13783_regulators[] = {
1bd588fd AP	219	MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
	220
	221	MC13783_FIXED_DEFINE(REGU, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
	222	MC13783_FIXED_DEFINE(REGU, VIOHI, REGULATORMODE0, mc13783_viohi_val),
	223	MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0, \
	224	mc13783_violo_val),
	225	MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, \
	226	mc13783_vdig_val),
	227	MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0, \
	228	mc13783_vgen_val),
	229	MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0, \
	230	mc13783_vrfdig_val),
	231	MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0, \
	232	mc13783_vrfref_val),
	233	MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0, \
	234	mc13783_vrfcp_val),
	235	MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0, \
	236	mc13783_vsim_val),
	237	MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0, \
	238	mc13783_vesim_val),
	239	MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, \
	240	mc13783_vcam_val),
	241	MC13783_FIXED_DEFINE(REGU, VRFBG, REGULATORMODE1, mc13783_vrfbg_val),
	242	MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1, \
	243	mc13783_vvib_val),
	244	MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1, \
	245	mc13783_vrf_val),
	246	MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1, \
	247	mc13783_vrf_val),
	248	MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1, \
	249	mc13783_vmmc_val),
	250	MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1, \
	251	mc13783_vmmc_val),
	252	MC13783_GPO_DEFINE(REGU, GPO1, POWERMISC),
	253	MC13783_GPO_DEFINE(REGU, GPO2, POWERMISC),
	254	MC13783_GPO_DEFINE(REGU, GPO3, POWERMISC),
	255	MC13783_GPO_DEFINE(REGU, GPO4, POWERMISC),
295c08bc SH	256	};
295c08bc SH	257
a10099bc	258	struct mc13783_regulator_priv {
295c08bc	259	struct mc13783 *mc13783;
a10099bc	260	struct regulator_dev *regulators[];
295c08bc SH	261	};
295c08bc SH	262
a10099bc	263	static int mc13783_regulator_enable(struct regulator_dev *rdev)
295c08bc	264	{
a10099bc	265	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
295c08bc	266	int id = rdev_get_id(rdev);
a10099bc	267	int ret;
295c08bc SH	268
	269	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
	270
a10099bc UKK	271	mc13783_lock(priv->mc13783);
a10099bc UKK	272	ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
295c08bc SH	273	mc13783_regulators[id].enable_bit,
295c08bc SH	274	mc13783_regulators[id].enable_bit);
a10099bc UKK	275	mc13783_unlock(priv->mc13783);
	276
	277	return ret;
295c08bc SH	278	}
295c08bc SH	279
a10099bc	280	static int mc13783_regulator_disable(struct regulator_dev *rdev)
295c08bc	281	{
a10099bc	282	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
295c08bc	283	int id = rdev_get_id(rdev);
a10099bc	284	int ret;
295c08bc SH	285
	286	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
	287
a10099bc UKK	288	mc13783_lock(priv->mc13783);
a10099bc UKK	289	ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
295c08bc	290	mc13783_regulators[id].enable_bit, 0);
a10099bc UKK	291	mc13783_unlock(priv->mc13783);
	292
	293	return ret;
295c08bc SH	294	}
295c08bc SH	295
a10099bc	296	static int mc13783_regulator_is_enabled(struct regulator_dev *rdev)
295c08bc	297	{
a10099bc	298	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
295c08bc SH	299	int ret, id = rdev_get_id(rdev);
	300	unsigned int val;
	301
a10099bc	302	mc13783_lock(priv->mc13783);
295c08bc	303	ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
a10099bc UKK	304	mc13783_unlock(priv->mc13783);
a10099bc UKK	305
295c08bc SH	306	if (ret)
	307	return ret;
	308
	309	return (val & mc13783_regulators[id].enable_bit) != 0;
	310	}
	311
1bd588fd AP	312	static int mc13783_regulator_list_voltage(struct regulator_dev *rdev,
	313	unsigned selector)
	314	{
	315	int id = rdev_get_id(rdev);
	316
	317	if (selector >= mc13783_regulators[id].desc.n_voltages)
	318	return -EINVAL;
	319
	320	return mc13783_regulators[id].voltages[selector];
	321	}
	322
	323	static int mc13783_get_best_voltage_index(struct regulator_dev *rdev,
	324	int min_uV, int max_uV)
	325	{
	326	int reg_id = rdev_get_id(rdev);
	327	int i;
	328	int bestmatch;
	329	int bestindex;
	330
	331	/*
	332	* Locate the minimum voltage fitting the criteria on
	333	* this regulator. The switchable voltages are not
	334	* in strict falling order so we need to check them
	335	* all for the best match.
	336	*/
	337	bestmatch = INT_MAX;
	338	bestindex = -1;
	339	for (i = 0; i < mc13783_regulators[reg_id].desc.n_voltages; i++) {
	340	if (mc13783_regulators[reg_id].voltages[i] >= min_uV &&
	341	mc13783_regulators[reg_id].voltages[i] < bestmatch) {
	342	bestmatch = mc13783_regulators[reg_id].voltages[i];
	343	bestindex = i;
	344	}
	345	}
	346
	347	if (bestindex < 0 \|\| bestmatch > max_uV) {
	348	dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
	349	min_uV, max_uV);
	350	return -EINVAL;
	351	}
	352	return bestindex;
	353	}
	354
	355	static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
	356	int min_uV, int max_uV)
	357	{
	358	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
	359	int value, id = rdev_get_id(rdev);
	360	int ret;
	361
	362	dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
	363	__func__, id, min_uV, max_uV);
	364
	365	/* Find the best index */
	366	value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV);
	367	dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value);
	368	if (value < 0)
	369	return value;
	370
	371	mc13783_lock(priv->mc13783);
	372	ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
	373	mc13783_regulators[id].vsel_mask,
	374	value << mc13783_regulators[id].vsel_shift);
	375	mc13783_unlock(priv->mc13783);
376
377	return ret;
378	}
379
380	static int mc13783_regulator_get_voltage(struct regulator_dev *rdev)
381	{
382	struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
383	int ret, id = rdev_get_id(rdev);
384	unsigned int val;
385
386	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
387
388	mc13783_lock(priv->mc13783);
389	ret = mc13783_reg_read(priv->mc13783,
390	mc13783_regulators[id].vsel_reg, &val);
391	mc13783_unlock(priv->mc13783);
392
393	if (ret)
394	return ret;
395
396	val = (val & mc13783_regulators[id].vsel_mask)
397	>> mc13783_regulators[id].vsel_shift;
398
399	dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
400
401	BUG_ON(val < 0 \|\| val > mc13783_regulators[id].desc.n_voltages);
402
403	return mc13783_regulators[id].voltages[val];
404	}
405
295c08bc	406	static struct regulator_ops mc13783_regulator_ops = {
a10099bc UKK	407	.enable = mc13783_regulator_enable,
	408	.disable = mc13783_regulator_disable,
	409	.is_enabled = mc13783_regulator_is_enabled,
1bd588fd AP	410	.list_voltage = mc13783_regulator_list_voltage,
	411	.set_voltage = mc13783_regulator_set_voltage,
	412	.get_voltage = mc13783_regulator_get_voltage,
	413	};
	414
	415	static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
	416	int min_uV, int max_uV)
	417	{
	418	int id = rdev_get_id(rdev);
	419
	420	dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
	421	__func__, id, min_uV, max_uV);
	422
	423	if (min_uV > mc13783_regulators[id].voltages[0] &&
	424	max_uV < mc13783_regulators[id].voltages[0])
	425	return 0;
	426	else
	427	return -EINVAL;
	428	}
	429
	430	static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev)
	431	{
	432	int id = rdev_get_id(rdev);
	433
	434	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
	435
	436	return mc13783_regulators[id].voltages[0];
	437	}
	438
	439	static struct regulator_ops mc13783_fixed_regulator_ops = {
	440	.enable = mc13783_regulator_enable,
	441	.disable = mc13783_regulator_disable,
	442	.is_enabled = mc13783_regulator_is_enabled,
	443	.list_voltage = mc13783_regulator_list_voltage,
	444	.set_voltage = mc13783_fixed_regulator_set_voltage,
	445	.get_voltage = mc13783_fixed_regulator_get_voltage,
295c08bc SH	446	};
	447
	448	static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
	449	{
a10099bc	450	struct mc13783_regulator_priv *priv;
295c08bc	451	struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
a10099bc UKK	452	struct mc13783_regulator_platform_data *pdata =
a10099bc UKK	453	dev_get_platdata(&pdev->dev);
295c08bc SH	454	struct mc13783_regulator_init_data *init_data;
	455	int i, ret;
	456
	457	dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
	458
a10099bc UKK	459	priv = kzalloc(sizeof(*priv) +
a10099bc UKK	460	pdata->num_regulators * sizeof(priv->regulators[0]),
295c08bc SH	461	GFP_KERNEL);
	462	if (!priv)
	463	return -ENOMEM;
	464
	465	priv->mc13783 = mc13783;
	466
a10099bc UKK	467	for (i = 0; i < pdata->num_regulators; i++) {
a10099bc UKK	468	init_data = &pdata->regulators[i];
295c08bc SH	469	priv->regulators[i] = regulator_register(
	470	&mc13783_regulators[init_data->id].desc,
	471	&pdev->dev, init_data->init_data, priv);
	472
	473	if (IS_ERR(priv->regulators[i])) {
	474	dev_err(&pdev->dev, "failed to register regulator %s\n",
	475	mc13783_regulators[i].desc.name);
	476	ret = PTR_ERR(priv->regulators[i]);
	477	goto err;
	478	}
	479	}
	480
	481	platform_set_drvdata(pdev, priv);
	482
	483	return 0;
	484	err:
	485	while (--i >= 0)
	486	regulator_unregister(priv->regulators[i]);
	487
	488	kfree(priv);
	489
	490	return ret;
	491	}
	492
	493	static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
	494	{
a10099bc UKK	495	struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev);
	496	struct mc13783_regulator_platform_data *pdata =
	497	dev_get_platdata(&pdev->dev);
295c08bc SH	498	int i;
295c08bc SH	499
a10099bc	500	for (i = 0; i < pdata->num_regulators; i++)
295c08bc SH	501	regulator_unregister(priv->regulators[i]);
	502
	503	return 0;
	504	}
	505
	506	static struct platform_driver mc13783_regulator_driver = {
	507	.driver = {
	508	.name = "mc13783-regulator",
	509	.owner = THIS_MODULE,
	510	},
	511	.remove = __devexit_p(mc13783_regulator_remove),
735eb93a	512	.probe = mc13783_regulator_probe,
295c08bc SH	513	};
	514
	515	static int __init mc13783_regulator_init(void)
	516	{
735eb93a	517	return platform_driver_register(&mc13783_regulator_driver);
295c08bc SH	518	}
	519	subsys_initcall(mc13783_regulator_init);
	520
	521	static void __exit mc13783_regulator_exit(void)
	522	{
	523	platform_driver_unregister(&mc13783_regulator_driver);
	524	}
	525	module_exit(mc13783_regulator_exit);
	526
a10099bc	527	MODULE_LICENSE("GPL v2");
295c08bc SH	528	MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de");
	529	MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
	530	MODULE_ALIAS("platform:mc13783-regulator");