drivers/regulator/cpcap-regulator.c - linux/kernel/git/gregkh/driver-core - Git at Google

 /*
  * Motorola CPCAP PMIC regulator driver
  *
  * Based on cpcap-regulator.c from Motorola Linux kernel tree
  * Copyright (C) 2009-2011 Motorola, Inc.
  *
  * Rewritten for mainline kernel to use device tree and regmap
  * Copyright (C) 2017 Tony Lindgren <tony@atomide.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation version 2.
  *
  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  * kind, whether express or implied; without even the implied warranty
  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
  */

 #include <linux/err.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/mfd/motorola-cpcap.h>

 /*
  * Resource assignment register bits. These seem to control the state
  * idle modes adn are used at least for omap4.
  */

 /* CPCAP_REG_ASSIGN2 bits - Resource Assignment 2 */
 #define CPCAP_BIT_VSDIO_SEL		BIT(15)
 #define CPCAP_BIT_VDIG_SEL		BIT(14)
 #define CPCAP_BIT_VCAM_SEL		BIT(13)
 #define CPCAP_BIT_SW6_SEL		BIT(12)
 #define CPCAP_BIT_SW5_SEL		BIT(11)
 #define CPCAP_BIT_SW4_SEL		BIT(10)
 #define CPCAP_BIT_SW3_SEL		BIT(9)
 #define CPCAP_BIT_SW2_SEL		BIT(8)
 #define CPCAP_BIT_SW1_SEL		BIT(7)

 /* CPCAP_REG_ASSIGN3 bits - Resource Assignment 3 */
 #define CPCAP_BIT_VUSBINT2_SEL		BIT(15)
 #define CPCAP_BIT_VUSBINT1_SEL		BIT(14)
 #define CPCAP_BIT_VVIB_SEL		BIT(13)
 #define CPCAP_BIT_VWLAN1_SEL		BIT(12)
 #define CPCAP_BIT_VRF1_SEL		BIT(11)
 #define CPCAP_BIT_VHVIO_SEL		BIT(10)
 #define CPCAP_BIT_VDAC_SEL		BIT(9)
 #define CPCAP_BIT_VUSB_SEL		BIT(8)
 #define CPCAP_BIT_VSIM_SEL		BIT(7)
 #define CPCAP_BIT_VRFREF_SEL		BIT(6)
 #define CPCAP_BIT_VPLL_SEL		BIT(5)
 #define CPCAP_BIT_VFUSE_SEL		BIT(4)
 #define CPCAP_BIT_VCSI_SEL		BIT(3)
 #define CPCAP_BIT_SPARE_14_2		BIT(2)
 #define CPCAP_BIT_VWLAN2_SEL		BIT(1)
 #define CPCAP_BIT_VRF2_SEL		BIT(0)

 /* CPCAP_REG_ASSIGN4 bits - Resource Assignment 4 */
 #define CPCAP_BIT_VAUDIO_SEL		BIT(0)

 /*
  * Enable register bits. At least CPCAP_BIT_AUDIO_LOW_PWR is generic,
  * and not limited to audio regulator. Let's use the Motorola kernel
  * naming for now until we have a better understanding of the other
  * enable register bits. No idea why BIT(3) is not defined.
  */
 #define CPCAP_BIT_AUDIO_LOW_PWR		BIT(6)
 #define CPCAP_BIT_AUD_LOWPWR_SPEED	BIT(5)
 #define CPCAP_BIT_VAUDIOPRISTBY		BIT(4)
 #define CPCAP_BIT_VAUDIO_MODE1		BIT(2)
 #define CPCAP_BIT_VAUDIO_MODE0		BIT(1)
 #define CPCAP_BIT_V_AUDIO_EN		BIT(0)

 #define CPCAP_BIT_AUDIO_NORMAL_MODE	0x00

 /*
  * Off mode configuration bit. Used currently only by SW5 on omap4. There's
  * the following comment in Motorola Linux kernel tree for it:
  *
  * When set in the regulator mode, the regulator assignment will be changed
  * to secondary when the regulator is disabled. The mode will be set back to
  * primary when the regulator is turned on.
  */
 #define CPCAP_REG_OFF_MODE_SEC		BIT(15)

 /**
  * SoC specific configuration for CPCAP regulator. There are at least three
  * different SoCs each with their own parameters: omap3, omap4 and tegra2.
  *
  * The assign_reg and assign_mask seem to allow toggling between primary
  * and secondary mode that at least omap4 uses for off mode.
  */
 struct cpcap_regulator {
 	struct regulator_desc rdesc;
 	const u16 assign_reg;
 	const u16 assign_mask;
 };

 #define CPCAP_REG(_ID, reg, assignment_reg, assignment_mask, val_tbl,	\
 		mode_mask, volt_mask, mode_val, off_val,		\
 		volt_trans_time) {					\
 	.rdesc = {							\
 		.name = #_ID,						\
 		.of_match = of_match_ptr(#_ID),				\
 		.ops = &cpcap_regulator_ops,				\
 		.regulators_node = of_match_ptr("regulators"),		\
 		.type = REGULATOR_VOLTAGE,				\
 		.id = CPCAP_##_ID,					\
 		.owner = THIS_MODULE,					\
 		.n_voltages = ARRAY_SIZE(val_tbl),			\
 		.volt_table = (val_tbl),				\
 		.vsel_reg = (reg),					\
 		.vsel_mask = (volt_mask),				\
 		.enable_reg = (reg),					\
 		.enable_mask = (mode_mask),				\
 		.enable_val = (mode_val),				\
 		.disable_val = (off_val),				\
 		.ramp_delay = (volt_trans_time),			\
 		.of_map_mode = cpcap_map_mode,				\
 	},								\
 	.assign_reg = (assignment_reg),					\
 	.assign_mask = (assignment_mask),				\
 }

 struct cpcap_ddata {
 	struct regmap *reg;
 	struct device *dev;
 	const struct cpcap_regulator *soc;
 };

 enum cpcap_regulator_id {
 	CPCAP_SW1,
 	CPCAP_SW2,
 	CPCAP_SW3,
 	CPCAP_SW4,
 	CPCAP_SW5,
 	CPCAP_SW6,
 	CPCAP_VCAM,
 	CPCAP_VCSI,
 	CPCAP_VDAC,
 	CPCAP_VDIG,
 	CPCAP_VFUSE,
 	CPCAP_VHVIO,
 	CPCAP_VSDIO,
 	CPCAP_VPLL,
 	CPCAP_VRF1,
 	CPCAP_VRF2,
 	CPCAP_VRFREF,
 	CPCAP_VWLAN1,
 	CPCAP_VWLAN2,
 	CPCAP_VSIM,
 	CPCAP_VSIMCARD,
 	CPCAP_VVIB,
 	CPCAP_VUSB,
 	CPCAP_VAUDIO,
 	CPCAP_NR_REGULATORS,
 };

 /*
  * We need to also configure regulator idle mode for SoC off mode if
  * CPCAP_REG_OFF_MODE_SEC is set.
  */
 static int cpcap_regulator_enable(struct regulator_dev *rdev)
 {
 	struct cpcap_regulator *regulator = rdev_get_drvdata(rdev);
 	int error, ignore;

 	error = regulator_enable_regmap(rdev);
 	if (error)
 		return error;

 	if (rdev->desc->enable_val & CPCAP_REG_OFF_MODE_SEC) {
 		error = regmap_update_bits(rdev->regmap, regulator->assign_reg,
 					   regulator->assign_mask,
 					   regulator->assign_mask);
 		if (error)
 			ignore = regulator_disable_regmap(rdev);
 	}

 	return error;
 }

 /*
  * We need to also configure regulator idle mode for SoC off mode if
  * CPCAP_REG_OFF_MODE_SEC is set.
  */
 static int cpcap_regulator_disable(struct regulator_dev *rdev)
 {
 	struct cpcap_regulator *regulator = rdev_get_drvdata(rdev);
 	int error, ignore;

 	if (rdev->desc->enable_val & CPCAP_REG_OFF_MODE_SEC) {
 		error = regmap_update_bits(rdev->regmap, regulator->assign_reg,
 					   regulator->assign_mask, 0);
 		if (error)
 			return error;
 	}

 	error = regulator_disable_regmap(rdev);
 	if (error && (rdev->desc->enable_val & CPCAP_REG_OFF_MODE_SEC)) {
 		ignore = regmap_update_bits(rdev->regmap, regulator->assign_reg,
 					    regulator->assign_mask,
 					    regulator->assign_mask);
 	}

 	return error;
 }

 static unsigned int cpcap_map_mode(unsigned int mode)
 {
 	switch (mode) {
 	case CPCAP_BIT_AUDIO_NORMAL_MODE:
 		return REGULATOR_MODE_NORMAL;
 	case CPCAP_BIT_AUDIO_LOW_PWR:
 		return REGULATOR_MODE_STANDBY;
 	default:
 		return REGULATOR_MODE_INVALID;
 	}
 }

 static unsigned int cpcap_regulator_get_mode(struct regulator_dev *rdev)
 {
 	int value;

 	regmap_read(rdev->regmap, rdev->desc->enable_reg, &value);

 	if (value & CPCAP_BIT_AUDIO_LOW_PWR)
 		return REGULATOR_MODE_STANDBY;

 	return REGULATOR_MODE_NORMAL;
 }

 static int cpcap_regulator_set_mode(struct regulator_dev *rdev,
 				    unsigned int mode)
 {
 	int value;

 	switch (mode) {
 	case REGULATOR_MODE_NORMAL:
 		value = CPCAP_BIT_AUDIO_NORMAL_MODE;
 		break;
 	case REGULATOR_MODE_STANDBY:
 		value = CPCAP_BIT_AUDIO_LOW_PWR;
 		break;
 	default:
 		return -EINVAL;
 	}

 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 				  CPCAP_BIT_AUDIO_LOW_PWR, value);
 }

 static struct regulator_ops cpcap_regulator_ops = {
 	.enable = cpcap_regulator_enable,
 	.disable = cpcap_regulator_disable,
 	.is_enabled = regulator_is_enabled_regmap,
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_iterate,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.get_mode = cpcap_regulator_get_mode,
 	.set_mode = cpcap_regulator_set_mode,
 };

 static const unsigned int unknown_val_tbl[] = { 0, };
 static const unsigned int sw2_sw4_val_tbl[] = { 612500, 625000, 637500,
 						650000, 662500, 675000,
 						687500, 700000, 712500,
 						725000, 737500, 750000,
 						762500, 775000, 787500,
 						800000, 812500, 825000,
 						837500, 850000, 862500,
 						875000, 887500, 900000,
 						912500, 925000, 937500,
 						950000, 962500, 975000,
 						987500, 1000000, 1012500,
 						1025000, 1037500, 1050000,
 						1062500, 1075000, 1087500,
 						1100000, 1112500, 1125000,
 						1137500, 1150000, 1162500,
 						1175000, 1187500, 1200000,
 						1212500, 1225000, 1237500,
 						1250000, 1262500, 1275000,
 						1287500, 1300000, 1312500,
 						1325000, 1337500, 1350000,
 						1362500, 1375000, 1387500,
 						1400000, 1412500, 1425000,
 						1437500, 1450000, 1462500, };
 static const unsigned int sw5_val_tbl[] = { 0, 5050000, };
 static const unsigned int vcam_val_tbl[] = { 2600000, 2700000, 2800000,
 					     2900000, };
 static const unsigned int vcsi_val_tbl[] = { 1200000, 1800000, };
 static const unsigned int vdac_val_tbl[] = { 1200000, 1500000, 1800000,
 					     2500000,};
 static const unsigned int vdig_val_tbl[] = { 1200000, 1350000, 1500000,
 					     1875000, };
 static const unsigned int vfuse_val_tbl[] = { 1500000, 1600000, 1700000,
 					      1800000, 1900000, 2000000,
 					      2100000, 2200000, 2300000,
 					      2400000, 2500000, 2600000,
 					      2700000, 3150000, };
 static const unsigned int vhvio_val_tbl[] = { 2775000, };
 static const unsigned int vsdio_val_tbl[] = { 1500000, 1600000, 1800000,
 					      2600000, 2700000, 2800000,
 					      2900000, 3000000, };
 static const unsigned int vpll_val_tbl[] = { 1200000, 1300000, 1400000,
 					     1800000, };
 /* Quirk: 2775000 is before 2500000 for vrf1 regulator */
 static const unsigned int vrf1_val_tbl[] = { 2775000, 2500000, };
 static const unsigned int vrf2_val_tbl[] = { 0, 2775000, };
 static const unsigned int vrfref_val_tbl[] = { 2500000, 2775000, };
 static const unsigned int vwlan1_val_tbl[] = { 1800000, 1900000, };
 static const unsigned int vwlan2_val_tbl[] = { 2775000, 3000000, 3300000,
 					       3300000, };
 static const unsigned int vsim_val_tbl[] = { 1800000, 2900000, };
 static const unsigned int vsimcard_val_tbl[] = { 1800000, 2900000, };
 static const unsigned int vvib_val_tbl[] = { 1300000, 1800000, 2000000,
 					     3000000, };
 static const unsigned int vusb_val_tbl[] = { 0, 3300000, };
 static const unsigned int vaudio_val_tbl[] = { 0, 2775000, };

 /**
  * SoC specific configuration for omap4. The data below is comes from Motorola
  * Linux kernel tree. It's basically the values of cpcap_regltr_data,
  * cpcap_regulator_mode_values and cpcap_regulator_off_mode_values, see
  * CPCAP_REG macro above.
  *
  * SW1 to SW4 and SW6 seems to be unused for mapphone. Note that VSIM and
  * VSIMCARD have a shared resource assignment bit.
  */
 static const struct cpcap_regulator omap4_regulators[] = {
 	CPCAP_REG(SW1, CPCAP_REG_S1C1, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW1_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(SW2, CPCAP_REG_S2C1, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW2_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(SW3, CPCAP_REG_S3C, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW3_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(SW4, CPCAP_REG_S4C1, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW4_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(SW5, CPCAP_REG_S5C, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW5_SEL, sw5_val_tbl,
 		  0x28, 0, 0x20 | CPCAP_REG_OFF_MODE_SEC, 0, 0),
 	CPCAP_REG(SW6, CPCAP_REG_S6C, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW6_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(VCAM, CPCAP_REG_VCAMC, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_VCAM_SEL, vcam_val_tbl,
 		  0x87, 0x30, 0x3, 0, 420),
 	CPCAP_REG(VCSI, CPCAP_REG_VCSIC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VCSI_SEL, vcsi_val_tbl,
 		  0x47, 0x10, 0x43, 0x41, 350),
 	CPCAP_REG(VDAC, CPCAP_REG_VDACC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VDAC_SEL, vdac_val_tbl,
 		  0x87, 0x30, 0x3, 0, 420),
 	CPCAP_REG(VDIG, CPCAP_REG_VDIGC, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_VDIG_SEL, vdig_val_tbl,
 		  0x87, 0x30, 0x82, 0, 420),
 	CPCAP_REG(VFUSE, CPCAP_REG_VFUSEC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VFUSE_SEL, vfuse_val_tbl,
 		  0x80, 0xf, 0x80, 0, 420),
 	CPCAP_REG(VHVIO, CPCAP_REG_VHVIOC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VHVIO_SEL, vhvio_val_tbl,
 		  0x17, 0, 0, 0x12, 0),
 	CPCAP_REG(VSDIO, CPCAP_REG_VSDIOC, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_VSDIO_SEL, vsdio_val_tbl,
 		  0x87, 0x38, 0x82, 0, 420),
 	CPCAP_REG(VPLL, CPCAP_REG_VPLLC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VPLL_SEL, vpll_val_tbl,
 		  0x43, 0x18, 0x2, 0, 420),
 	CPCAP_REG(VRF1, CPCAP_REG_VRF1C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VRF1_SEL, vrf1_val_tbl,
 		  0xac, 0x2, 0x4, 0, 10),
 	CPCAP_REG(VRF2, CPCAP_REG_VRF2C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VRF2_SEL, vrf2_val_tbl,
 		  0x23, 0x8, 0, 0, 10),
 	CPCAP_REG(VRFREF, CPCAP_REG_VRFREFC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VRFREF_SEL, vrfref_val_tbl,
 		  0x23, 0x8, 0, 0, 420),
 	CPCAP_REG(VWLAN1, CPCAP_REG_VWLAN1C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VWLAN1_SEL, vwlan1_val_tbl,
 		  0x47, 0x10, 0, 0, 420),
 	CPCAP_REG(VWLAN2, CPCAP_REG_VWLAN2C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VWLAN2_SEL, vwlan2_val_tbl,
 		  0x20c, 0xc0, 0x20c, 0, 420),
 	CPCAP_REG(VSIM, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
 		  0xffff, vsim_val_tbl,
 		  0x23, 0x8, 0x3, 0, 420),
 	CPCAP_REG(VSIMCARD, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
 		  0xffff, vsimcard_val_tbl,
 		  0x1e80, 0x8, 0x1e00, 0, 420),
 	CPCAP_REG(VVIB, CPCAP_REG_VVIBC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VVIB_SEL, vvib_val_tbl,
 		  0x1, 0xc, 0x1, 0, 500),
 	CPCAP_REG(VUSB, CPCAP_REG_VUSBC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VUSB_SEL, vusb_val_tbl,
 		  0x11c, 0x40, 0xc, 0, 0),
 	CPCAP_REG(VAUDIO, CPCAP_REG_VAUDIOC, CPCAP_REG_ASSIGN4,
 		  CPCAP_BIT_VAUDIO_SEL, vaudio_val_tbl,
 		  0x16, 0x1, 0x4, 0, 0),
 	{ /* sentinel */ },
 };

 static const struct cpcap_regulator xoom_regulators[] = {
 	CPCAP_REG(SW1, CPCAP_REG_S1C1, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW1_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(SW2, CPCAP_REG_S2C1, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW2_SEL, sw2_sw4_val_tbl,
 		  0xf00, 0x7f, 0x800, 0, 120),
 	CPCAP_REG(SW3, CPCAP_REG_S3C, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW3_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(SW4, CPCAP_REG_S4C1, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW4_SEL, sw2_sw4_val_tbl,
 		  0xf00, 0x7f, 0x900, 0, 100),
 	CPCAP_REG(SW5, CPCAP_REG_S5C, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW5_SEL, sw5_val_tbl,
 		  0x2a, 0, 0x22, 0, 0),
 	CPCAP_REG(SW6, CPCAP_REG_S6C, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_SW6_SEL, unknown_val_tbl,
 		  0, 0, 0, 0, 0),
 	CPCAP_REG(VCAM, CPCAP_REG_VCAMC, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_VCAM_SEL, vcam_val_tbl,
 		  0x87, 0x30, 0x7, 0, 420),
 	CPCAP_REG(VCSI, CPCAP_REG_VCSIC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VCSI_SEL, vcsi_val_tbl,
 		  0x47, 0x10, 0x7, 0, 350),
 	CPCAP_REG(VDAC, CPCAP_REG_VDACC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VDAC_SEL, vdac_val_tbl,
 		  0x87, 0x30, 0x3, 0, 420),
 	CPCAP_REG(VDIG, CPCAP_REG_VDIGC, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_VDIG_SEL, vdig_val_tbl,
 		  0x87, 0x30, 0x5, 0, 420),
 	CPCAP_REG(VFUSE, CPCAP_REG_VFUSEC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VFUSE_SEL, vfuse_val_tbl,
 		  0x80, 0xf, 0x80, 0, 420),
 	CPCAP_REG(VHVIO, CPCAP_REG_VHVIOC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VHVIO_SEL, vhvio_val_tbl,
 		  0x17, 0, 0x2, 0, 0),
 	CPCAP_REG(VSDIO, CPCAP_REG_VSDIOC, CPCAP_REG_ASSIGN2,
 		  CPCAP_BIT_VSDIO_SEL, vsdio_val_tbl,
 		  0x87, 0x38, 0x2, 0, 420),
 	CPCAP_REG(VPLL, CPCAP_REG_VPLLC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VPLL_SEL, vpll_val_tbl,
 		  0x43, 0x18, 0x1, 0, 420),
 	CPCAP_REG(VRF1, CPCAP_REG_VRF1C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VRF1_SEL, vrf1_val_tbl,
 		  0xac, 0x2, 0xc, 0, 10),
 	CPCAP_REG(VRF2, CPCAP_REG_VRF2C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VRF2_SEL, vrf2_val_tbl,
 		  0x23, 0x8, 0x3, 0, 10),
 	CPCAP_REG(VRFREF, CPCAP_REG_VRFREFC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VRFREF_SEL, vrfref_val_tbl,
 		  0x23, 0x8, 0x3, 0, 420),
 	CPCAP_REG(VWLAN1, CPCAP_REG_VWLAN1C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VWLAN1_SEL, vwlan1_val_tbl,
 		  0x47, 0x10, 0x5, 0, 420),
 	CPCAP_REG(VWLAN2, CPCAP_REG_VWLAN2C, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VWLAN2_SEL, vwlan2_val_tbl,
 		  0x20c, 0xc0, 0x8, 0, 420),
 	CPCAP_REG(VSIM, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
 		  0xffff, vsim_val_tbl,
 		  0x23, 0x8, 0x3, 0, 420),
 	CPCAP_REG(VSIMCARD, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
 		  0xffff, vsimcard_val_tbl,
 		  0x1e80, 0x8, 0x1e00, 0, 420),
 	CPCAP_REG(VVIB, CPCAP_REG_VVIBC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VVIB_SEL, vvib_val_tbl,
 		  0x1, 0xc, 0, 0x1, 500),
 	CPCAP_REG(VUSB, CPCAP_REG_VUSBC, CPCAP_REG_ASSIGN3,
 		  CPCAP_BIT_VUSB_SEL, vusb_val_tbl,
 		  0x11c, 0x40, 0xc, 0, 0),
 	CPCAP_REG(VAUDIO, CPCAP_REG_VAUDIOC, CPCAP_REG_ASSIGN4,
 		  CPCAP_BIT_VAUDIO_SEL, vaudio_val_tbl,
 		  0x16, 0x1, 0x4, 0, 0),
 	{ /* sentinel */ },
 };

 static const struct of_device_id cpcap_regulator_id_table[] = {
 	{
 		.compatible = "motorola,cpcap-regulator",
 	},
 	{
 		.compatible = "motorola,mapphone-cpcap-regulator",
 		.data = omap4_regulators,
 	},
 	{
 		.compatible = "motorola,xoom-cpcap-regulator",
 		.data = xoom_regulators,
 	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, cpcap_regulator_id_table);

 static int cpcap_regulator_probe(struct platform_device *pdev)
 {
 	struct cpcap_ddata *ddata;
 	const struct cpcap_regulator *match_data;
 	struct regulator_config config;
 	int i;

 	match_data = of_device_get_match_data(&pdev->dev);
 	if (!match_data) {
 		dev_err(&pdev->dev, "no configuration data found\n");

 		return -ENODEV;
 	}

 	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
 	if (!ddata)
 		return -ENOMEM;

 	ddata->reg = dev_get_regmap(pdev->dev.parent, NULL);
 	if (!ddata->reg)
 		return -ENODEV;

 	ddata->dev = &pdev->dev;
 	ddata->soc = match_data;
 	platform_set_drvdata(pdev, ddata);

 	memset(&config, 0, sizeof(config));
 	config.dev = &pdev->dev;
 	config.regmap = ddata->reg;

 	for (i = 0; i < CPCAP_NR_REGULATORS; i++) {
 		const struct cpcap_regulator *regulator = &ddata->soc[i];
 		struct regulator_dev *rdev;

 		if (!regulator->rdesc.name)
 			break;

 		if (regulator->rdesc.volt_table == unknown_val_tbl)
 			continue;

 		config.driver_data = (void *)regulator;
 		rdev = devm_regulator_register(&pdev->dev,
 					       &regulator->rdesc,
 					       &config);
 		if (IS_ERR(rdev)) {
 			dev_err(&pdev->dev, "failed to register regulator %s\n",
 				regulator->rdesc.name);

 			return PTR_ERR(rdev);
 		}
 	}

 	return 0;
 }

 static struct platform_driver cpcap_regulator_driver = {
 	.probe		= cpcap_regulator_probe,
 	.driver		= {
 		.name	= "cpcap-regulator",
 		.of_match_table = of_match_ptr(cpcap_regulator_id_table),
 	},
 };

 module_platform_driver(cpcap_regulator_driver);

 MODULE_ALIAS("platform:cpcap-regulator");
 MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>");
 MODULE_DESCRIPTION("CPCAP regulator driver");
 MODULE_LICENSE("GPL v2");
	/*
	* Motorola CPCAP PMIC regulator driver
	*
	* Based on cpcap-regulator.c from Motorola Linux kernel tree
	* Copyright (C) 2009-2011 Motorola, Inc.
	*
	* Rewritten for mainline kernel to use device tree and regmap
	* Copyright (C) 2017 Tony Lindgren <tony@atomide.com>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation version 2.
	*
	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	* kind, whether express or implied; without even the implied warranty
	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*/

	#include <linux/err.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/of_platform.h>
	#include <linux/regmap.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/regulator/of_regulator.h>
	#include <linux/mfd/motorola-cpcap.h>

	/*
	* Resource assignment register bits. These seem to control the state
	* idle modes adn are used at least for omap4.
	*/

	/* CPCAP_REG_ASSIGN2 bits - Resource Assignment 2 */
	#define CPCAP_BIT_VSDIO_SEL BIT(15)
	#define CPCAP_BIT_VDIG_SEL BIT(14)
	#define CPCAP_BIT_VCAM_SEL BIT(13)
	#define CPCAP_BIT_SW6_SEL BIT(12)
	#define CPCAP_BIT_SW5_SEL BIT(11)
	#define CPCAP_BIT_SW4_SEL BIT(10)
	#define CPCAP_BIT_SW3_SEL BIT(9)
	#define CPCAP_BIT_SW2_SEL BIT(8)
	#define CPCAP_BIT_SW1_SEL BIT(7)

	/* CPCAP_REG_ASSIGN3 bits - Resource Assignment 3 */
	#define CPCAP_BIT_VUSBINT2_SEL BIT(15)
	#define CPCAP_BIT_VUSBINT1_SEL BIT(14)
	#define CPCAP_BIT_VVIB_SEL BIT(13)
	#define CPCAP_BIT_VWLAN1_SEL BIT(12)
	#define CPCAP_BIT_VRF1_SEL BIT(11)
	#define CPCAP_BIT_VHVIO_SEL BIT(10)
	#define CPCAP_BIT_VDAC_SEL BIT(9)
	#define CPCAP_BIT_VUSB_SEL BIT(8)
	#define CPCAP_BIT_VSIM_SEL BIT(7)
	#define CPCAP_BIT_VRFREF_SEL BIT(6)
	#define CPCAP_BIT_VPLL_SEL BIT(5)
	#define CPCAP_BIT_VFUSE_SEL BIT(4)
	#define CPCAP_BIT_VCSI_SEL BIT(3)
	#define CPCAP_BIT_SPARE_14_2 BIT(2)
	#define CPCAP_BIT_VWLAN2_SEL BIT(1)
	#define CPCAP_BIT_VRF2_SEL BIT(0)

	/* CPCAP_REG_ASSIGN4 bits - Resource Assignment 4 */
	#define CPCAP_BIT_VAUDIO_SEL BIT(0)

	/*
	* Enable register bits. At least CPCAP_BIT_AUDIO_LOW_PWR is generic,
	* and not limited to audio regulator. Let's use the Motorola kernel
	* naming for now until we have a better understanding of the other
	* enable register bits. No idea why BIT(3) is not defined.
	*/
	#define CPCAP_BIT_AUDIO_LOW_PWR BIT(6)
	#define CPCAP_BIT_AUD_LOWPWR_SPEED BIT(5)
	#define CPCAP_BIT_VAUDIOPRISTBY BIT(4)
	#define CPCAP_BIT_VAUDIO_MODE1 BIT(2)
	#define CPCAP_BIT_VAUDIO_MODE0 BIT(1)
	#define CPCAP_BIT_V_AUDIO_EN BIT(0)

	#define CPCAP_BIT_AUDIO_NORMAL_MODE 0x00

	/*
	* Off mode configuration bit. Used currently only by SW5 on omap4. There's
	* the following comment in Motorola Linux kernel tree for it:
	*
	* When set in the regulator mode, the regulator assignment will be changed
	* to secondary when the regulator is disabled. The mode will be set back to
	* primary when the regulator is turned on.
	*/
	#define CPCAP_REG_OFF_MODE_SEC BIT(15)

	/**
	* SoC specific configuration for CPCAP regulator. There are at least three
	* different SoCs each with their own parameters: omap3, omap4 and tegra2.
	*
	* The assign_reg and assign_mask seem to allow toggling between primary
	* and secondary mode that at least omap4 uses for off mode.
	*/
	struct cpcap_regulator {
	struct regulator_desc rdesc;
	const u16 assign_reg;
	const u16 assign_mask;
	};

	#define CPCAP_REG(_ID, reg, assignment_reg, assignment_mask, val_tbl, \
	mode_mask, volt_mask, mode_val, off_val, \
	volt_trans_time) { \
	.rdesc = { \
	.name = #_ID, \
	.of_match = of_match_ptr(#_ID), \
	.ops = &cpcap_regulator_ops, \
	.regulators_node = of_match_ptr("regulators"), \
	.type = REGULATOR_VOLTAGE, \
	.id = CPCAP_##_ID, \
	.owner = THIS_MODULE, \
	.n_voltages = ARRAY_SIZE(val_tbl), \
	.volt_table = (val_tbl), \
	.vsel_reg = (reg), \
	.vsel_mask = (volt_mask), \
	.enable_reg = (reg), \
	.enable_mask = (mode_mask), \
	.enable_val = (mode_val), \
	.disable_val = (off_val), \
	.ramp_delay = (volt_trans_time), \
	.of_map_mode = cpcap_map_mode, \
	}, \
	.assign_reg = (assignment_reg), \
	.assign_mask = (assignment_mask), \
	}

	struct cpcap_ddata {
	struct regmap *reg;
	struct device *dev;
	const struct cpcap_regulator *soc;
	};

	enum cpcap_regulator_id {
	CPCAP_SW1,
	CPCAP_SW2,
	CPCAP_SW3,
	CPCAP_SW4,
	CPCAP_SW5,
	CPCAP_SW6,
	CPCAP_VCAM,
	CPCAP_VCSI,
	CPCAP_VDAC,
	CPCAP_VDIG,
	CPCAP_VFUSE,
	CPCAP_VHVIO,
	CPCAP_VSDIO,
	CPCAP_VPLL,
	CPCAP_VRF1,
	CPCAP_VRF2,
	CPCAP_VRFREF,
	CPCAP_VWLAN1,
	CPCAP_VWLAN2,
	CPCAP_VSIM,
	CPCAP_VSIMCARD,
	CPCAP_VVIB,
	CPCAP_VUSB,
	CPCAP_VAUDIO,
	CPCAP_NR_REGULATORS,
	};

	/*
	* We need to also configure regulator idle mode for SoC off mode if
	* CPCAP_REG_OFF_MODE_SEC is set.
	*/
	static int cpcap_regulator_enable(struct regulator_dev *rdev)
	{
	struct cpcap_regulator *regulator = rdev_get_drvdata(rdev);
	int error, ignore;

	error = regulator_enable_regmap(rdev);
	if (error)
	return error;

	if (rdev->desc->enable_val & CPCAP_REG_OFF_MODE_SEC) {
	error = regmap_update_bits(rdev->regmap, regulator->assign_reg,
	regulator->assign_mask,
	regulator->assign_mask);
	if (error)
	ignore = regulator_disable_regmap(rdev);
	}

	return error;
	}

	/*
	* We need to also configure regulator idle mode for SoC off mode if
	* CPCAP_REG_OFF_MODE_SEC is set.
	*/
	static int cpcap_regulator_disable(struct regulator_dev *rdev)
	{
	struct cpcap_regulator *regulator = rdev_get_drvdata(rdev);
	int error, ignore;

	if (rdev->desc->enable_val & CPCAP_REG_OFF_MODE_SEC) {
	error = regmap_update_bits(rdev->regmap, regulator->assign_reg,
	regulator->assign_mask, 0);
	if (error)
	return error;
	}

	error = regulator_disable_regmap(rdev);
	if (error && (rdev->desc->enable_val & CPCAP_REG_OFF_MODE_SEC)) {
	ignore = regmap_update_bits(rdev->regmap, regulator->assign_reg,
	regulator->assign_mask,
	regulator->assign_mask);
	}

	return error;
	}

	static unsigned int cpcap_map_mode(unsigned int mode)
	{
	switch (mode) {
	case CPCAP_BIT_AUDIO_NORMAL_MODE:
	return REGULATOR_MODE_NORMAL;
	case CPCAP_BIT_AUDIO_LOW_PWR:
	return REGULATOR_MODE_STANDBY;
	default:
	return REGULATOR_MODE_INVALID;
	}
	}

	static unsigned int cpcap_regulator_get_mode(struct regulator_dev *rdev)
	{
	int value;

	regmap_read(rdev->regmap, rdev->desc->enable_reg, &value);

	if (value & CPCAP_BIT_AUDIO_LOW_PWR)
	return REGULATOR_MODE_STANDBY;

	return REGULATOR_MODE_NORMAL;
	}

	static int cpcap_regulator_set_mode(struct regulator_dev *rdev,
	unsigned int mode)
	{
	int value;

	switch (mode) {
	case REGULATOR_MODE_NORMAL:
	value = CPCAP_BIT_AUDIO_NORMAL_MODE;
	break;
	case REGULATOR_MODE_STANDBY:
	value = CPCAP_BIT_AUDIO_LOW_PWR;
	break;
	default:
	return -EINVAL;
	}

	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
	CPCAP_BIT_AUDIO_LOW_PWR, value);
	}

	static struct regulator_ops cpcap_regulator_ops = {
	.enable = cpcap_regulator_enable,
	.disable = cpcap_regulator_disable,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_table,
	.map_voltage = regulator_map_voltage_iterate,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_mode = cpcap_regulator_get_mode,
	.set_mode = cpcap_regulator_set_mode,
	};

	static const unsigned int unknown_val_tbl[] = { 0, };
	static const unsigned int sw2_sw4_val_tbl[] = { 612500, 625000, 637500,
	650000, 662500, 675000,
	687500, 700000, 712500,
	725000, 737500, 750000,
	762500, 775000, 787500,
	800000, 812500, 825000,
	837500, 850000, 862500,
	875000, 887500, 900000,
	912500, 925000, 937500,
	950000, 962500, 975000,
	987500, 1000000, 1012500,
	1025000, 1037500, 1050000,
	1062500, 1075000, 1087500,
	1100000, 1112500, 1125000,
	1137500, 1150000, 1162500,
	1175000, 1187500, 1200000,
	1212500, 1225000, 1237500,
	1250000, 1262500, 1275000,
	1287500, 1300000, 1312500,
	1325000, 1337500, 1350000,
	1362500, 1375000, 1387500,
	1400000, 1412500, 1425000,
	1437500, 1450000, 1462500, };
	static const unsigned int sw5_val_tbl[] = { 0, 5050000, };
	static const unsigned int vcam_val_tbl[] = { 2600000, 2700000, 2800000,
	2900000, };
	static const unsigned int vcsi_val_tbl[] = { 1200000, 1800000, };
	static const unsigned int vdac_val_tbl[] = { 1200000, 1500000, 1800000,
	2500000,};
	static const unsigned int vdig_val_tbl[] = { 1200000, 1350000, 1500000,
	1875000, };
	static const unsigned int vfuse_val_tbl[] = { 1500000, 1600000, 1700000,
	1800000, 1900000, 2000000,
	2100000, 2200000, 2300000,
	2400000, 2500000, 2600000,
	2700000, 3150000, };
	static const unsigned int vhvio_val_tbl[] = { 2775000, };
	static const unsigned int vsdio_val_tbl[] = { 1500000, 1600000, 1800000,
	2600000, 2700000, 2800000,
	2900000, 3000000, };
	static const unsigned int vpll_val_tbl[] = { 1200000, 1300000, 1400000,
	1800000, };
	/* Quirk: 2775000 is before 2500000 for vrf1 regulator */
	static const unsigned int vrf1_val_tbl[] = { 2775000, 2500000, };
	static const unsigned int vrf2_val_tbl[] = { 0, 2775000, };
	static const unsigned int vrfref_val_tbl[] = { 2500000, 2775000, };
	static const unsigned int vwlan1_val_tbl[] = { 1800000, 1900000, };
	static const unsigned int vwlan2_val_tbl[] = { 2775000, 3000000, 3300000,
	3300000, };
	static const unsigned int vsim_val_tbl[] = { 1800000, 2900000, };
	static const unsigned int vsimcard_val_tbl[] = { 1800000, 2900000, };
	static const unsigned int vvib_val_tbl[] = { 1300000, 1800000, 2000000,
	3000000, };
	static const unsigned int vusb_val_tbl[] = { 0, 3300000, };
	static const unsigned int vaudio_val_tbl[] = { 0, 2775000, };

	/**
	* SoC specific configuration for omap4. The data below is comes from Motorola
	* Linux kernel tree. It's basically the values of cpcap_regltr_data,
	* cpcap_regulator_mode_values and cpcap_regulator_off_mode_values, see
	* CPCAP_REG macro above.
	*
	* SW1 to SW4 and SW6 seems to be unused for mapphone. Note that VSIM and
	* VSIMCARD have a shared resource assignment bit.
	*/
	static const struct cpcap_regulator omap4_regulators[] = {
	CPCAP_REG(SW1, CPCAP_REG_S1C1, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW1_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(SW2, CPCAP_REG_S2C1, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW2_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(SW3, CPCAP_REG_S3C, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW3_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(SW4, CPCAP_REG_S4C1, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW4_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(SW5, CPCAP_REG_S5C, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW5_SEL, sw5_val_tbl,
	0x28, 0, 0x20 \| CPCAP_REG_OFF_MODE_SEC, 0, 0),
	CPCAP_REG(SW6, CPCAP_REG_S6C, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW6_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(VCAM, CPCAP_REG_VCAMC, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_VCAM_SEL, vcam_val_tbl,
	0x87, 0x30, 0x3, 0, 420),
	CPCAP_REG(VCSI, CPCAP_REG_VCSIC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VCSI_SEL, vcsi_val_tbl,
	0x47, 0x10, 0x43, 0x41, 350),
	CPCAP_REG(VDAC, CPCAP_REG_VDACC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VDAC_SEL, vdac_val_tbl,
	0x87, 0x30, 0x3, 0, 420),
	CPCAP_REG(VDIG, CPCAP_REG_VDIGC, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_VDIG_SEL, vdig_val_tbl,
	0x87, 0x30, 0x82, 0, 420),
	CPCAP_REG(VFUSE, CPCAP_REG_VFUSEC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VFUSE_SEL, vfuse_val_tbl,
	0x80, 0xf, 0x80, 0, 420),
	CPCAP_REG(VHVIO, CPCAP_REG_VHVIOC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VHVIO_SEL, vhvio_val_tbl,
	0x17, 0, 0, 0x12, 0),
	CPCAP_REG(VSDIO, CPCAP_REG_VSDIOC, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_VSDIO_SEL, vsdio_val_tbl,
	0x87, 0x38, 0x82, 0, 420),
	CPCAP_REG(VPLL, CPCAP_REG_VPLLC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VPLL_SEL, vpll_val_tbl,
	0x43, 0x18, 0x2, 0, 420),
	CPCAP_REG(VRF1, CPCAP_REG_VRF1C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VRF1_SEL, vrf1_val_tbl,
	0xac, 0x2, 0x4, 0, 10),
	CPCAP_REG(VRF2, CPCAP_REG_VRF2C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VRF2_SEL, vrf2_val_tbl,
	0x23, 0x8, 0, 0, 10),
	CPCAP_REG(VRFREF, CPCAP_REG_VRFREFC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VRFREF_SEL, vrfref_val_tbl,
	0x23, 0x8, 0, 0, 420),
	CPCAP_REG(VWLAN1, CPCAP_REG_VWLAN1C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VWLAN1_SEL, vwlan1_val_tbl,
	0x47, 0x10, 0, 0, 420),
	CPCAP_REG(VWLAN2, CPCAP_REG_VWLAN2C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VWLAN2_SEL, vwlan2_val_tbl,
	0x20c, 0xc0, 0x20c, 0, 420),
	CPCAP_REG(VSIM, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
	0xffff, vsim_val_tbl,
	0x23, 0x8, 0x3, 0, 420),
	CPCAP_REG(VSIMCARD, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
	0xffff, vsimcard_val_tbl,
	0x1e80, 0x8, 0x1e00, 0, 420),
	CPCAP_REG(VVIB, CPCAP_REG_VVIBC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VVIB_SEL, vvib_val_tbl,
	0x1, 0xc, 0x1, 0, 500),
	CPCAP_REG(VUSB, CPCAP_REG_VUSBC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VUSB_SEL, vusb_val_tbl,
	0x11c, 0x40, 0xc, 0, 0),
	CPCAP_REG(VAUDIO, CPCAP_REG_VAUDIOC, CPCAP_REG_ASSIGN4,
	CPCAP_BIT_VAUDIO_SEL, vaudio_val_tbl,
	0x16, 0x1, 0x4, 0, 0),
	{ /* sentinel */ },
	};

	static const struct cpcap_regulator xoom_regulators[] = {
	CPCAP_REG(SW1, CPCAP_REG_S1C1, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW1_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(SW2, CPCAP_REG_S2C1, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW2_SEL, sw2_sw4_val_tbl,
	0xf00, 0x7f, 0x800, 0, 120),
	CPCAP_REG(SW3, CPCAP_REG_S3C, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW3_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(SW4, CPCAP_REG_S4C1, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW4_SEL, sw2_sw4_val_tbl,
	0xf00, 0x7f, 0x900, 0, 100),
	CPCAP_REG(SW5, CPCAP_REG_S5C, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW5_SEL, sw5_val_tbl,
	0x2a, 0, 0x22, 0, 0),
	CPCAP_REG(SW6, CPCAP_REG_S6C, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_SW6_SEL, unknown_val_tbl,
	0, 0, 0, 0, 0),
	CPCAP_REG(VCAM, CPCAP_REG_VCAMC, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_VCAM_SEL, vcam_val_tbl,
	0x87, 0x30, 0x7, 0, 420),
	CPCAP_REG(VCSI, CPCAP_REG_VCSIC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VCSI_SEL, vcsi_val_tbl,
	0x47, 0x10, 0x7, 0, 350),
	CPCAP_REG(VDAC, CPCAP_REG_VDACC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VDAC_SEL, vdac_val_tbl,
	0x87, 0x30, 0x3, 0, 420),
	CPCAP_REG(VDIG, CPCAP_REG_VDIGC, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_VDIG_SEL, vdig_val_tbl,
	0x87, 0x30, 0x5, 0, 420),
	CPCAP_REG(VFUSE, CPCAP_REG_VFUSEC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VFUSE_SEL, vfuse_val_tbl,
	0x80, 0xf, 0x80, 0, 420),
	CPCAP_REG(VHVIO, CPCAP_REG_VHVIOC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VHVIO_SEL, vhvio_val_tbl,
	0x17, 0, 0x2, 0, 0),
	CPCAP_REG(VSDIO, CPCAP_REG_VSDIOC, CPCAP_REG_ASSIGN2,
	CPCAP_BIT_VSDIO_SEL, vsdio_val_tbl,
	0x87, 0x38, 0x2, 0, 420),
	CPCAP_REG(VPLL, CPCAP_REG_VPLLC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VPLL_SEL, vpll_val_tbl,
	0x43, 0x18, 0x1, 0, 420),
	CPCAP_REG(VRF1, CPCAP_REG_VRF1C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VRF1_SEL, vrf1_val_tbl,
	0xac, 0x2, 0xc, 0, 10),
	CPCAP_REG(VRF2, CPCAP_REG_VRF2C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VRF2_SEL, vrf2_val_tbl,
	0x23, 0x8, 0x3, 0, 10),
	CPCAP_REG(VRFREF, CPCAP_REG_VRFREFC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VRFREF_SEL, vrfref_val_tbl,
	0x23, 0x8, 0x3, 0, 420),
	CPCAP_REG(VWLAN1, CPCAP_REG_VWLAN1C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VWLAN1_SEL, vwlan1_val_tbl,
	0x47, 0x10, 0x5, 0, 420),
	CPCAP_REG(VWLAN2, CPCAP_REG_VWLAN2C, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VWLAN2_SEL, vwlan2_val_tbl,
	0x20c, 0xc0, 0x8, 0, 420),
	CPCAP_REG(VSIM, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
	0xffff, vsim_val_tbl,
	0x23, 0x8, 0x3, 0, 420),
	CPCAP_REG(VSIMCARD, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
	0xffff, vsimcard_val_tbl,
	0x1e80, 0x8, 0x1e00, 0, 420),
	CPCAP_REG(VVIB, CPCAP_REG_VVIBC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VVIB_SEL, vvib_val_tbl,
	0x1, 0xc, 0, 0x1, 500),
	CPCAP_REG(VUSB, CPCAP_REG_VUSBC, CPCAP_REG_ASSIGN3,
	CPCAP_BIT_VUSB_SEL, vusb_val_tbl,
	0x11c, 0x40, 0xc, 0, 0),
	CPCAP_REG(VAUDIO, CPCAP_REG_VAUDIOC, CPCAP_REG_ASSIGN4,
	CPCAP_BIT_VAUDIO_SEL, vaudio_val_tbl,
	0x16, 0x1, 0x4, 0, 0),
	{ /* sentinel */ },
	};

	static const struct of_device_id cpcap_regulator_id_table[] = {
	{
	.compatible = "motorola,cpcap-regulator",
	},
	{
	.compatible = "motorola,mapphone-cpcap-regulator",
	.data = omap4_regulators,
	},
	{
	.compatible = "motorola,xoom-cpcap-regulator",
	.data = xoom_regulators,
	},
	{},
	};
	MODULE_DEVICE_TABLE(of, cpcap_regulator_id_table);

	static int cpcap_regulator_probe(struct platform_device *pdev)
	{
	struct cpcap_ddata *ddata;
	const struct cpcap_regulator *match_data;
	struct regulator_config config;
	int i;

	match_data = of_device_get_match_data(&pdev->dev);
	if (!match_data) {
	dev_err(&pdev->dev, "no configuration data found\n");

	return -ENODEV;
	}

	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
	if (!ddata)
	return -ENOMEM;

	ddata->reg = dev_get_regmap(pdev->dev.parent, NULL);
	if (!ddata->reg)
	return -ENODEV;

	ddata->dev = &pdev->dev;
	ddata->soc = match_data;
	platform_set_drvdata(pdev, ddata);

	memset(&config, 0, sizeof(config));
	config.dev = &pdev->dev;
	config.regmap = ddata->reg;

	for (i = 0; i < CPCAP_NR_REGULATORS; i++) {
	const struct cpcap_regulator *regulator = &ddata->soc[i];
	struct regulator_dev *rdev;

	if (!regulator->rdesc.name)
	break;

	if (regulator->rdesc.volt_table == unknown_val_tbl)
	continue;

	config.driver_data = (void *)regulator;
	rdev = devm_regulator_register(&pdev->dev,
	&regulator->rdesc,
	&config);
	if (IS_ERR(rdev)) {
	dev_err(&pdev->dev, "failed to register regulator %s\n",
	regulator->rdesc.name);

	return PTR_ERR(rdev);
	}
	}

	return 0;
	}

	static struct platform_driver cpcap_regulator_driver = {
	.probe = cpcap_regulator_probe,
	.driver = {
	.name = "cpcap-regulator",
	.of_match_table = of_match_ptr(cpcap_regulator_id_table),
	},
	};

	module_platform_driver(cpcap_regulator_driver);

	MODULE_ALIAS("platform:cpcap-regulator");
	MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>");
	MODULE_DESCRIPTION("CPCAP regulator driver");
	MODULE_LICENSE("GPL v2");