| /* |
| * 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 <linux/module.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 unsigned int mc13783_sw3_val[] = { |
| 5000000, 5000000, 5000000, 5500000, |
| }; |
| |
| static const unsigned int mc13783_vaudio_val[] = { |
| 2775000, |
| }; |
| |
| static const unsigned int mc13783_viohi_val[] = { |
| 2775000, |
| }; |
| |
| static const unsigned int mc13783_violo_val[] = { |
| 1200000, 1300000, 1500000, 1800000, |
| }; |
| |
| static const unsigned int mc13783_vdig_val[] = { |
| 1200000, 1300000, 1500000, 1800000, |
| }; |
| |
| static const unsigned int mc13783_vgen_val[] = { |
| 1200000, 1300000, 1500000, 1800000, |
| 1100000, 2000000, 2775000, 2400000, |
| }; |
| |
| static const unsigned int mc13783_vrfdig_val[] = { |
| 1200000, 1500000, 1800000, 1875000, |
| }; |
| |
| static const unsigned int mc13783_vrfref_val[] = { |
| 2475000, 2600000, 2700000, 2775000, |
| }; |
| |
| static const unsigned int mc13783_vrfcp_val[] = { |
| 2700000, 2775000, |
| }; |
| |
| static const unsigned int mc13783_vsim_val[] = { |
| 1800000, 2900000, 3000000, |
| }; |
| |
| static const unsigned int mc13783_vesim_val[] = { |
| 1800000, 2900000, |
| }; |
| |
| static const unsigned int mc13783_vcam_val[] = { |
| 1500000, 1800000, 2500000, 2550000, |
| 2600000, 2750000, 2800000, 3000000, |
| }; |
| |
| static const unsigned int mc13783_vrfbg_val[] = { |
| 1250000, |
| }; |
| |
| static const unsigned int mc13783_vvib_val[] = { |
| 1300000, 1800000, 2000000, 3000000, |
| }; |
| |
| static const unsigned int mc13783_vmmc_val[] = { |
| 1600000, 1800000, 2000000, 2600000, |
| 2700000, 2800000, 2900000, 3000000, |
| }; |
| |
| static const unsigned int mc13783_vrf_val[] = { |
| 1500000, 1875000, 2700000, 2775000, |
| }; |
| |
| static const unsigned int mc13783_gpo_val[] = { |
| 3100000, |
| }; |
| |
| static const unsigned 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 = regulator_list_voltage_table, |
| .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 mc13xxx_regulator_platform_data *pdata = |
| dev_get_platdata(&pdev->dev); |
| struct mc13xxx_regulator_init_data *init_data; |
| struct regulator_config config = { }; |
| int i, ret; |
| |
| dev_dbg(&pdev->dev, "%s id %d\n", __func__, pdev->id); |
| |
| if (!pdata) |
| return -EINVAL; |
| |
| priv = devm_kzalloc(&pdev->dev, 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++) { |
| struct regulator_desc *desc; |
| |
| init_data = &pdata->regulators[i]; |
| desc = &mc13783_regulators[init_data->id].desc; |
| |
| config.dev = &pdev->dev; |
| config.init_data = init_data->init_data; |
| config.driver_data = priv; |
| |
| priv->regulators[i] = regulator_register(desc, &config); |
| 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]); |
| |
| return ret; |
| } |
| |
| static int __devexit mc13783_regulator_remove(struct platform_device *pdev) |
| { |
| struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev); |
| struct mc13xxx_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]); |
| |
| 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"); |