|  | /* | 
|  | * Regulator Driver for Freescale MC13783 PMIC | 
|  | * | 
|  | * Copyright 2010 Yong Shen <yong.shen@linaro.org> | 
|  | * 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/slab.h> | 
|  | #include <linux/init.h> | 
|  | #include <linux/err.h> | 
|  | #include "mc13xxx.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) | 
|  | #define MC13783_REG_POWERMISC_PWGT1SPIEN		(1 << 15) | 
|  | #define MC13783_REG_POWERMISC_PWGT2SPIEN		(1 << 16) | 
|  |  | 
|  | #define MC13783_REG_POWERMISC_PWGTSPI_M			(3 << 15) | 
|  |  | 
|  |  | 
|  | /* Voltage Values */ | 
|  | static const int mc13783_sw3_val[] = { | 
|  | 5000000, 5000000, 5000000, 5500000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vaudio_val[] = { | 
|  | 2775000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_viohi_val[] = { | 
|  | 2775000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_violo_val[] = { | 
|  | 1200000, 1300000, 1500000, 1800000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vdig_val[] = { | 
|  | 1200000, 1300000, 1500000, 1800000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vgen_val[] = { | 
|  | 1200000, 1300000, 1500000, 1800000, | 
|  | 1100000, 2000000, 2775000, 2400000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vrfdig_val[] = { | 
|  | 1200000, 1500000, 1800000, 1875000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vrfref_val[] = { | 
|  | 2475000, 2600000, 2700000, 2775000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vrfcp_val[] = { | 
|  | 2700000, 2775000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vsim_val[] = { | 
|  | 1800000, 2900000, 3000000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vesim_val[] = { | 
|  | 1800000, 2900000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vcam_val[] = { | 
|  | 1500000, 1800000, 2500000, 2550000, | 
|  | 2600000, 2750000, 2800000, 3000000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vrfbg_val[] = { | 
|  | 1250000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vvib_val[] = { | 
|  | 1300000, 1800000, 2000000, 3000000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vmmc_val[] = { | 
|  | 1600000, 1800000, 2000000, 2600000, | 
|  | 2700000, 2800000, 2900000, 3000000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_vrf_val[] = { | 
|  | 1500000, 1875000, 2700000, 2775000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_gpo_val[] = { | 
|  | 3100000, | 
|  | }; | 
|  |  | 
|  | static const int mc13783_pwgtdrv_val[] = { | 
|  | 5500000, | 
|  | }; | 
|  |  | 
|  | static struct regulator_ops mc13783_gpo_regulator_ops; | 
|  |  | 
|  | #define MC13783_DEFINE(prefix, name, reg, vsel_reg, voltages)	\ | 
|  | MC13xxx_DEFINE(MC13783_REG_, name, reg, vsel_reg, voltages, \ | 
|  | mc13xxx_regulator_ops) | 
|  |  | 
|  | #define MC13783_FIXED_DEFINE(prefix, name, reg, voltages)		\ | 
|  | MC13xxx_FIXED_DEFINE(MC13783_REG_, name, reg, voltages, \ | 
|  | mc13xxx_fixed_regulator_ops) | 
|  |  | 
|  | #define MC13783_GPO_DEFINE(prefix, name, reg, voltages)		\ | 
|  | MC13xxx_GPO_DEFINE(MC13783_REG_, name, reg, voltages, \ | 
|  | mc13783_gpo_regulator_ops) | 
|  |  | 
|  | #define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages)		\ | 
|  | MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages) | 
|  | #define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages)		\ | 
|  | MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages) | 
|  |  | 
|  | static struct mc13xxx_regulator mc13783_regulators[] = { | 
|  | MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val), | 
|  |  | 
|  | MC13783_FIXED_DEFINE(REG, VAUDIO, REGULATORMODE0, mc13783_vaudio_val), | 
|  | MC13783_FIXED_DEFINE(REG, 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(REG, 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(REG, GPO1, POWERMISC, mc13783_gpo_val), | 
|  | MC13783_GPO_DEFINE(REG, GPO2, POWERMISC, mc13783_gpo_val), | 
|  | MC13783_GPO_DEFINE(REG, GPO3, POWERMISC, mc13783_gpo_val), | 
|  | MC13783_GPO_DEFINE(REG, GPO4, POWERMISC, mc13783_gpo_val), | 
|  | MC13783_GPO_DEFINE(REG, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val), | 
|  | MC13783_GPO_DEFINE(REG, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val), | 
|  | }; | 
|  |  | 
|  | static int mc13783_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask, | 
|  | u32 val) | 
|  | { | 
|  | struct mc13xxx *mc13783 = priv->mc13xxx; | 
|  | int ret; | 
|  | u32 valread; | 
|  |  | 
|  | BUG_ON(val & ~mask); | 
|  |  | 
|  | ret = mc13xxx_reg_read(mc13783, MC13783_REG_POWERMISC, &valread); | 
|  | if (ret) | 
|  | return ret; | 
|  |  | 
|  | /* Update the stored state for Power Gates. */ | 
|  | priv->powermisc_pwgt_state = | 
|  | (priv->powermisc_pwgt_state & ~mask) | val; | 
|  | priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M; | 
|  |  | 
|  | /* Construct the new register value */ | 
|  | valread = (valread & ~mask) | val; | 
|  | /* Overwrite the PWGTxEN with the stored version */ | 
|  | valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) | | 
|  | priv->powermisc_pwgt_state; | 
|  |  | 
|  | return mc13xxx_reg_write(mc13783, MC13783_REG_POWERMISC, valread); | 
|  | } | 
|  |  | 
|  | static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev) | 
|  | { | 
|  | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | 
|  | struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators; | 
|  | int id = rdev_get_id(rdev); | 
|  | int ret; | 
|  | u32 en_val = mc13xxx_regulators[id].enable_bit; | 
|  |  | 
|  | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | 
|  |  | 
|  | /* Power Gate enable value is 0 */ | 
|  | if (id == MC13783_REG_PWGT1SPI || | 
|  | id == MC13783_REG_PWGT2SPI) | 
|  | en_val = 0; | 
|  |  | 
|  | mc13xxx_lock(priv->mc13xxx); | 
|  | ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit, | 
|  | en_val); | 
|  | mc13xxx_unlock(priv->mc13xxx); | 
|  |  | 
|  | return ret; | 
|  | } | 
|  |  | 
|  | static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev) | 
|  | { | 
|  | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | 
|  | struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators; | 
|  | int id = rdev_get_id(rdev); | 
|  | int ret; | 
|  | u32 dis_val = 0; | 
|  |  | 
|  | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | 
|  |  | 
|  | /* Power Gate disable value is 1 */ | 
|  | if (id == MC13783_REG_PWGT1SPI || | 
|  | id == MC13783_REG_PWGT2SPI) | 
|  | dis_val = mc13xxx_regulators[id].enable_bit; | 
|  |  | 
|  | mc13xxx_lock(priv->mc13xxx); | 
|  | ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit, | 
|  | dis_val); | 
|  | mc13xxx_unlock(priv->mc13xxx); | 
|  |  | 
|  | return ret; | 
|  | } | 
|  |  | 
|  | static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev) | 
|  | { | 
|  | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | 
|  | struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators; | 
|  | int ret, id = rdev_get_id(rdev); | 
|  | unsigned int val; | 
|  |  | 
|  | mc13xxx_lock(priv->mc13xxx); | 
|  | ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val); | 
|  | mc13xxx_unlock(priv->mc13xxx); | 
|  |  | 
|  | if (ret) | 
|  | return ret; | 
|  |  | 
|  | /* Power Gates state is stored in powermisc_pwgt_state | 
|  | * where the meaning of bits is negated */ | 
|  | val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) | | 
|  | (priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M); | 
|  |  | 
|  | return (val & mc13xxx_regulators[id].enable_bit) != 0; | 
|  | } | 
|  |  | 
|  | static struct regulator_ops mc13783_gpo_regulator_ops = { | 
|  | .enable = mc13783_gpo_regulator_enable, | 
|  | .disable = mc13783_gpo_regulator_disable, | 
|  | .is_enabled = mc13783_gpo_regulator_is_enabled, | 
|  | .list_voltage = mc13xxx_regulator_list_voltage, | 
|  | .set_voltage = mc13xxx_fixed_regulator_set_voltage, | 
|  | .get_voltage = mc13xxx_fixed_regulator_get_voltage, | 
|  | }; | 
|  |  | 
|  | static int __devinit mc13783_regulator_probe(struct platform_device *pdev) | 
|  | { | 
|  | struct mc13xxx_regulator_priv *priv; | 
|  | struct mc13xxx *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, "%s id %d\n", __func__, pdev->id); | 
|  |  | 
|  | priv = kzalloc(sizeof(*priv) + | 
|  | pdata->num_regulators * sizeof(priv->regulators[0]), | 
|  | GFP_KERNEL); | 
|  | if (!priv) | 
|  | return -ENOMEM; | 
|  |  | 
|  | priv->mc13xxx_regulators = mc13783_regulators; | 
|  | priv->mc13xxx = 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 mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev); | 
|  | struct mc13783_regulator_platform_data *pdata = | 
|  | dev_get_platdata(&pdev->dev); | 
|  | int i; | 
|  |  | 
|  | platform_set_drvdata(pdev, NULL); | 
|  |  | 
|  | for (i = 0; i < pdata->num_regulators; i++) | 
|  | regulator_unregister(priv->regulators[i]); | 
|  |  | 
|  | kfree(priv); | 
|  | 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"); |