| /* |
| * Copyright (C) ST-Ericsson SA 2010 |
| * |
| * License Terms: GNU General Public License v2 |
| * |
| * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson |
| * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson |
| * |
| * AB8500 peripheral regulators |
| * |
| * AB8500 supports the following regulators: |
| * VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA |
| */ |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/mfd/abx500.h> |
| #include <linux/mfd/abx500/ab8500.h> |
| #include <linux/of.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/ab8500.h> |
| #include <linux/slab.h> |
| |
| /** |
| * struct ab8500_regulator_info - ab8500 regulator information |
| * @dev: device pointer |
| * @desc: regulator description |
| * @regulator_dev: regulator device |
| * @max_uV: maximum voltage (for variable voltage supplies) |
| * @min_uV: minimum voltage (for variable voltage supplies) |
| * @fixed_uV: typical voltage (for fixed voltage supplies) |
| * @update_bank: bank to control on/off |
| * @update_reg: register to control on/off |
| * @update_mask: mask to enable/disable regulator |
| * @update_val_enable: bits to enable the regulator in normal (high power) mode |
| * @voltage_bank: bank to control regulator voltage |
| * @voltage_reg: register to control regulator voltage |
| * @voltage_mask: mask to control regulator voltage |
| * @voltages: supported voltage table |
| * @voltages_len: number of supported voltages for the regulator |
| * @delay: startup/set voltage delay in us |
| */ |
| struct ab8500_regulator_info { |
| struct device *dev; |
| struct regulator_desc desc; |
| struct regulator_dev *regulator; |
| int max_uV; |
| int min_uV; |
| int fixed_uV; |
| u8 update_bank; |
| u8 update_reg; |
| u8 update_mask; |
| u8 update_val_enable; |
| u8 voltage_bank; |
| u8 voltage_reg; |
| u8 voltage_mask; |
| int const *voltages; |
| int voltages_len; |
| unsigned int delay; |
| }; |
| |
| /* voltage tables for the vauxn/vintcore supplies */ |
| static const int ldo_vauxn_voltages[] = { |
| 1100000, |
| 1200000, |
| 1300000, |
| 1400000, |
| 1500000, |
| 1800000, |
| 1850000, |
| 1900000, |
| 2500000, |
| 2650000, |
| 2700000, |
| 2750000, |
| 2800000, |
| 2900000, |
| 3000000, |
| 3300000, |
| }; |
| |
| static const int ldo_vaux3_voltages[] = { |
| 1200000, |
| 1500000, |
| 1800000, |
| 2100000, |
| 2500000, |
| 2750000, |
| 2790000, |
| 2910000, |
| }; |
| |
| static const int ldo_vintcore_voltages[] = { |
| 1200000, |
| 1225000, |
| 1250000, |
| 1275000, |
| 1300000, |
| 1325000, |
| 1350000, |
| }; |
| |
| static int ab8500_regulator_enable(struct regulator_dev *rdev) |
| { |
| int ret; |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| ret = abx500_mask_and_set_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, |
| info->update_mask, info->update_val_enable); |
| if (ret < 0) |
| dev_err(rdev_get_dev(rdev), |
| "couldn't set enable bits for regulator\n"); |
| |
| dev_vdbg(rdev_get_dev(rdev), |
| "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, info->update_val_enable); |
| |
| return ret; |
| } |
| |
| static int ab8500_regulator_disable(struct regulator_dev *rdev) |
| { |
| int ret; |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| ret = abx500_mask_and_set_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, |
| info->update_mask, 0x0); |
| if (ret < 0) |
| dev_err(rdev_get_dev(rdev), |
| "couldn't set disable bits for regulator\n"); |
| |
| dev_vdbg(rdev_get_dev(rdev), |
| "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, 0x0); |
| |
| return ret; |
| } |
| |
| static int ab8500_regulator_is_enabled(struct regulator_dev *rdev) |
| { |
| int ret; |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| ret = abx500_get_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, ®val); |
| if (ret < 0) { |
| dev_err(rdev_get_dev(rdev), |
| "couldn't read 0x%x register\n", info->update_reg); |
| return ret; |
| } |
| |
| dev_vdbg(rdev_get_dev(rdev), |
| "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x," |
| " 0x%x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| |
| if (regval & info->update_mask) |
| return true; |
| else |
| return false; |
| } |
| |
| static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector) |
| { |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| /* return the uV for the fixed regulators */ |
| if (info->fixed_uV) |
| return info->fixed_uV; |
| |
| if (selector >= info->voltages_len) |
| return -EINVAL; |
| |
| return info->voltages[selector]; |
| } |
| |
| static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev) |
| { |
| int ret, val; |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| ret = abx500_get_register_interruptible(info->dev, |
| info->voltage_bank, info->voltage_reg, ®val); |
| if (ret < 0) { |
| dev_err(rdev_get_dev(rdev), |
| "couldn't read voltage reg for regulator\n"); |
| return ret; |
| } |
| |
| dev_vdbg(rdev_get_dev(rdev), |
| "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x," |
| " 0x%x\n", |
| info->desc.name, info->voltage_bank, info->voltage_reg, |
| info->voltage_mask, regval); |
| |
| /* vintcore has a different layout */ |
| val = regval & info->voltage_mask; |
| if (info->desc.id == AB8500_LDO_INTCORE) |
| return val >> 0x3; |
| else |
| return val; |
| } |
| |
| static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev, |
| unsigned selector) |
| { |
| int ret; |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| /* set the registers for the request */ |
| regval = (u8)selector; |
| ret = abx500_mask_and_set_register_interruptible(info->dev, |
| info->voltage_bank, info->voltage_reg, |
| info->voltage_mask, regval); |
| if (ret < 0) |
| dev_err(rdev_get_dev(rdev), |
| "couldn't set voltage reg for regulator\n"); |
| |
| dev_vdbg(rdev_get_dev(rdev), |
| "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x," |
| " 0x%x\n", |
| info->desc.name, info->voltage_bank, info->voltage_reg, |
| info->voltage_mask, regval); |
| |
| return ret; |
| } |
| |
| static int ab8500_regulator_enable_time(struct regulator_dev *rdev) |
| { |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| return info->delay; |
| } |
| |
| static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev, |
| unsigned int old_sel, |
| unsigned int new_sel) |
| { |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| int ret; |
| |
| /* If the regulator isn't on, it won't take time here */ |
| ret = ab8500_regulator_is_enabled(rdev); |
| if (ret < 0) |
| return ret; |
| if (!ret) |
| return 0; |
| return info->delay; |
| } |
| |
| static struct regulator_ops ab8500_regulator_ops = { |
| .enable = ab8500_regulator_enable, |
| .disable = ab8500_regulator_disable, |
| .is_enabled = ab8500_regulator_is_enabled, |
| .get_voltage_sel = ab8500_regulator_get_voltage_sel, |
| .set_voltage_sel = ab8500_regulator_set_voltage_sel, |
| .list_voltage = ab8500_list_voltage, |
| .enable_time = ab8500_regulator_enable_time, |
| .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel, |
| }; |
| |
| static int ab8500_fixed_get_voltage(struct regulator_dev *rdev) |
| { |
| struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| return info->fixed_uV; |
| } |
| |
| static struct regulator_ops ab8500_regulator_fixed_ops = { |
| .enable = ab8500_regulator_enable, |
| .disable = ab8500_regulator_disable, |
| .is_enabled = ab8500_regulator_is_enabled, |
| .get_voltage = ab8500_fixed_get_voltage, |
| .list_voltage = ab8500_list_voltage, |
| .enable_time = ab8500_regulator_enable_time, |
| .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel, |
| }; |
| |
| static struct ab8500_regulator_info |
| ab8500_regulator_info[AB8500_NUM_REGULATORS] = { |
| /* |
| * Variable Voltage Regulators |
| * name, min mV, max mV, |
| * update bank, reg, mask, enable val |
| * volt bank, reg, mask, table, table length |
| */ |
| [AB8500_LDO_AUX1] = { |
| .desc = { |
| .name = "LDO-AUX1", |
| .ops = &ab8500_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_AUX1, |
| .owner = THIS_MODULE, |
| .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages), |
| }, |
| .min_uV = 1100000, |
| .max_uV = 3300000, |
| .update_bank = 0x04, |
| .update_reg = 0x09, |
| .update_mask = 0x03, |
| .update_val_enable = 0x01, |
| .voltage_bank = 0x04, |
| .voltage_reg = 0x1f, |
| .voltage_mask = 0x0f, |
| .voltages = ldo_vauxn_voltages, |
| .voltages_len = ARRAY_SIZE(ldo_vauxn_voltages), |
| }, |
| [AB8500_LDO_AUX2] = { |
| .desc = { |
| .name = "LDO-AUX2", |
| .ops = &ab8500_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_AUX2, |
| .owner = THIS_MODULE, |
| .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages), |
| }, |
| .min_uV = 1100000, |
| .max_uV = 3300000, |
| .update_bank = 0x04, |
| .update_reg = 0x09, |
| .update_mask = 0x0c, |
| .update_val_enable = 0x04, |
| .voltage_bank = 0x04, |
| .voltage_reg = 0x20, |
| .voltage_mask = 0x0f, |
| .voltages = ldo_vauxn_voltages, |
| .voltages_len = ARRAY_SIZE(ldo_vauxn_voltages), |
| }, |
| [AB8500_LDO_AUX3] = { |
| .desc = { |
| .name = "LDO-AUX3", |
| .ops = &ab8500_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_AUX3, |
| .owner = THIS_MODULE, |
| .n_voltages = ARRAY_SIZE(ldo_vaux3_voltages), |
| }, |
| .min_uV = 1100000, |
| .max_uV = 3300000, |
| .update_bank = 0x04, |
| .update_reg = 0x0a, |
| .update_mask = 0x03, |
| .update_val_enable = 0x01, |
| .voltage_bank = 0x04, |
| .voltage_reg = 0x21, |
| .voltage_mask = 0x07, |
| .voltages = ldo_vaux3_voltages, |
| .voltages_len = ARRAY_SIZE(ldo_vaux3_voltages), |
| }, |
| [AB8500_LDO_INTCORE] = { |
| .desc = { |
| .name = "LDO-INTCORE", |
| .ops = &ab8500_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_INTCORE, |
| .owner = THIS_MODULE, |
| .n_voltages = ARRAY_SIZE(ldo_vintcore_voltages), |
| }, |
| .min_uV = 1100000, |
| .max_uV = 3300000, |
| .update_bank = 0x03, |
| .update_reg = 0x80, |
| .update_mask = 0x44, |
| .update_val_enable = 0x04, |
| .voltage_bank = 0x03, |
| .voltage_reg = 0x80, |
| .voltage_mask = 0x38, |
| .voltages = ldo_vintcore_voltages, |
| .voltages_len = ARRAY_SIZE(ldo_vintcore_voltages), |
| }, |
| |
| /* |
| * Fixed Voltage Regulators |
| * name, fixed mV, |
| * update bank, reg, mask, enable val |
| */ |
| [AB8500_LDO_TVOUT] = { |
| .desc = { |
| .name = "LDO-TVOUT", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_TVOUT, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .delay = 10000, |
| .fixed_uV = 2000000, |
| .update_bank = 0x03, |
| .update_reg = 0x80, |
| .update_mask = 0x82, |
| .update_val_enable = 0x02, |
| }, |
| [AB8500_LDO_USB] = { |
| .desc = { |
| .name = "LDO-USB", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_USB, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .fixed_uV = 3300000, |
| .update_bank = 0x03, |
| .update_reg = 0x82, |
| .update_mask = 0x03, |
| .update_val_enable = 0x01, |
| }, |
| [AB8500_LDO_AUDIO] = { |
| .desc = { |
| .name = "LDO-AUDIO", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_AUDIO, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .fixed_uV = 2000000, |
| .update_bank = 0x03, |
| .update_reg = 0x83, |
| .update_mask = 0x02, |
| .update_val_enable = 0x02, |
| }, |
| [AB8500_LDO_ANAMIC1] = { |
| .desc = { |
| .name = "LDO-ANAMIC1", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_ANAMIC1, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .fixed_uV = 2050000, |
| .update_bank = 0x03, |
| .update_reg = 0x83, |
| .update_mask = 0x08, |
| .update_val_enable = 0x08, |
| }, |
| [AB8500_LDO_ANAMIC2] = { |
| .desc = { |
| .name = "LDO-ANAMIC2", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_ANAMIC2, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .fixed_uV = 2050000, |
| .update_bank = 0x03, |
| .update_reg = 0x83, |
| .update_mask = 0x10, |
| .update_val_enable = 0x10, |
| }, |
| [AB8500_LDO_DMIC] = { |
| .desc = { |
| .name = "LDO-DMIC", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_DMIC, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .fixed_uV = 1800000, |
| .update_bank = 0x03, |
| .update_reg = 0x83, |
| .update_mask = 0x04, |
| .update_val_enable = 0x04, |
| }, |
| [AB8500_LDO_ANA] = { |
| .desc = { |
| .name = "LDO-ANA", |
| .ops = &ab8500_regulator_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_LDO_ANA, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .fixed_uV = 1200000, |
| .update_bank = 0x04, |
| .update_reg = 0x06, |
| .update_mask = 0x0c, |
| .update_val_enable = 0x04, |
| }, |
| |
| |
| }; |
| |
| struct ab8500_reg_init { |
| u8 bank; |
| u8 addr; |
| u8 mask; |
| }; |
| |
| #define REG_INIT(_id, _bank, _addr, _mask) \ |
| [_id] = { \ |
| .bank = _bank, \ |
| .addr = _addr, \ |
| .mask = _mask, \ |
| } |
| |
| static struct ab8500_reg_init ab8500_reg_init[] = { |
| /* |
| * 0x30, VanaRequestCtrl |
| * 0x0C, VpllRequestCtrl |
| * 0xc0, VextSupply1RequestCtrl |
| */ |
| REG_INIT(AB8500_REGUREQUESTCTRL2, 0x03, 0x04, 0xfc), |
| /* |
| * 0x03, VextSupply2RequestCtrl |
| * 0x0c, VextSupply3RequestCtrl |
| * 0x30, Vaux1RequestCtrl |
| * 0xc0, Vaux2RequestCtrl |
| */ |
| REG_INIT(AB8500_REGUREQUESTCTRL3, 0x03, 0x05, 0xff), |
| /* |
| * 0x03, Vaux3RequestCtrl |
| * 0x04, SwHPReq |
| */ |
| REG_INIT(AB8500_REGUREQUESTCTRL4, 0x03, 0x06, 0x07), |
| /* |
| * 0x08, VanaSysClkReq1HPValid |
| * 0x20, Vaux1SysClkReq1HPValid |
| * 0x40, Vaux2SysClkReq1HPValid |
| * 0x80, Vaux3SysClkReq1HPValid |
| */ |
| REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8), |
| /* |
| * 0x10, VextSupply1SysClkReq1HPValid |
| * 0x20, VextSupply2SysClkReq1HPValid |
| * 0x40, VextSupply3SysClkReq1HPValid |
| */ |
| REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70), |
| /* |
| * 0x08, VanaHwHPReq1Valid |
| * 0x20, Vaux1HwHPReq1Valid |
| * 0x40, Vaux2HwHPReq1Valid |
| * 0x80, Vaux3HwHPReq1Valid |
| */ |
| REG_INIT(AB8500_REGUHWHPREQ1VALID1, 0x03, 0x09, 0xe8), |
| /* |
| * 0x01, VextSupply1HwHPReq1Valid |
| * 0x02, VextSupply2HwHPReq1Valid |
| * 0x04, VextSupply3HwHPReq1Valid |
| */ |
| REG_INIT(AB8500_REGUHWHPREQ1VALID2, 0x03, 0x0a, 0x07), |
| /* |
| * 0x08, VanaHwHPReq2Valid |
| * 0x20, Vaux1HwHPReq2Valid |
| * 0x40, Vaux2HwHPReq2Valid |
| * 0x80, Vaux3HwHPReq2Valid |
| */ |
| REG_INIT(AB8500_REGUHWHPREQ2VALID1, 0x03, 0x0b, 0xe8), |
| /* |
| * 0x01, VextSupply1HwHPReq2Valid |
| * 0x02, VextSupply2HwHPReq2Valid |
| * 0x04, VextSupply3HwHPReq2Valid |
| */ |
| REG_INIT(AB8500_REGUHWHPREQ2VALID2, 0x03, 0x0c, 0x07), |
| /* |
| * 0x20, VanaSwHPReqValid |
| * 0x80, Vaux1SwHPReqValid |
| */ |
| REG_INIT(AB8500_REGUSWHPREQVALID1, 0x03, 0x0d, 0xa0), |
| /* |
| * 0x01, Vaux2SwHPReqValid |
| * 0x02, Vaux3SwHPReqValid |
| * 0x04, VextSupply1SwHPReqValid |
| * 0x08, VextSupply2SwHPReqValid |
| * 0x10, VextSupply3SwHPReqValid |
| */ |
| REG_INIT(AB8500_REGUSWHPREQVALID2, 0x03, 0x0e, 0x1f), |
| /* |
| * 0x02, SysClkReq2Valid1 |
| * ... |
| * 0x80, SysClkReq8Valid1 |
| */ |
| REG_INIT(AB8500_REGUSYSCLKREQVALID1, 0x03, 0x0f, 0xfe), |
| /* |
| * 0x02, SysClkReq2Valid2 |
| * ... |
| * 0x80, SysClkReq8Valid2 |
| */ |
| REG_INIT(AB8500_REGUSYSCLKREQVALID2, 0x03, 0x10, 0xfe), |
| /* |
| * 0x02, VTVoutEna |
| * 0x04, Vintcore12Ena |
| * 0x38, Vintcore12Sel |
| * 0x40, Vintcore12LP |
| * 0x80, VTVoutLP |
| */ |
| REG_INIT(AB8500_REGUMISC1, 0x03, 0x80, 0xfe), |
| /* |
| * 0x02, VaudioEna |
| * 0x04, VdmicEna |
| * 0x08, Vamic1Ena |
| * 0x10, Vamic2Ena |
| */ |
| REG_INIT(AB8500_VAUDIOSUPPLY, 0x03, 0x83, 0x1e), |
| /* |
| * 0x01, Vamic1_dzout |
| * 0x02, Vamic2_dzout |
| */ |
| REG_INIT(AB8500_REGUCTRL1VAMIC, 0x03, 0x84, 0x03), |
| /* |
| * 0x0c, VanaRegu |
| * 0x03, VpllRegu |
| */ |
| REG_INIT(AB8500_VPLLVANAREGU, 0x04, 0x06, 0x0f), |
| /* |
| * 0x01, VrefDDREna |
| * 0x02, VrefDDRSleepMode |
| */ |
| REG_INIT(AB8500_VREFDDR, 0x04, 0x07, 0x03), |
| /* |
| * 0x03, VextSupply1Regu |
| * 0x0c, VextSupply2Regu |
| * 0x30, VextSupply3Regu |
| * 0x40, ExtSupply2Bypass |
| * 0x80, ExtSupply3Bypass |
| */ |
| REG_INIT(AB8500_EXTSUPPLYREGU, 0x04, 0x08, 0xff), |
| /* |
| * 0x03, Vaux1Regu |
| * 0x0c, Vaux2Regu |
| */ |
| REG_INIT(AB8500_VAUX12REGU, 0x04, 0x09, 0x0f), |
| /* |
| * 0x03, Vaux3Regu |
| */ |
| REG_INIT(AB8500_VRF1VAUX3REGU, 0x04, 0x0a, 0x03), |
| /* |
| * 0x3f, Vsmps1Sel1 |
| */ |
| REG_INIT(AB8500_VSMPS1SEL1, 0x04, 0x13, 0x3f), |
| /* |
| * 0x0f, Vaux1Sel |
| */ |
| REG_INIT(AB8500_VAUX1SEL, 0x04, 0x1f, 0x0f), |
| /* |
| * 0x0f, Vaux2Sel |
| */ |
| REG_INIT(AB8500_VAUX2SEL, 0x04, 0x20, 0x0f), |
| /* |
| * 0x07, Vaux3Sel |
| */ |
| REG_INIT(AB8500_VRF1VAUX3SEL, 0x04, 0x21, 0x07), |
| /* |
| * 0x01, VextSupply12LP |
| */ |
| REG_INIT(AB8500_REGUCTRL2SPARE, 0x04, 0x22, 0x01), |
| /* |
| * 0x04, Vaux1Disch |
| * 0x08, Vaux2Disch |
| * 0x10, Vaux3Disch |
| * 0x20, Vintcore12Disch |
| * 0x40, VTVoutDisch |
| * 0x80, VaudioDisch |
| */ |
| REG_INIT(AB8500_REGUCTRLDISCH, 0x04, 0x43, 0xfc), |
| /* |
| * 0x02, VanaDisch |
| * 0x04, VdmicPullDownEna |
| * 0x10, VdmicDisch |
| */ |
| REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16), |
| }; |
| |
| static __devinit int |
| ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value) |
| { |
| int err; |
| |
| if (value & ~ab8500_reg_init[id].mask) { |
| dev_err(&pdev->dev, |
| "Configuration error: value outside mask.\n"); |
| return -EINVAL; |
| } |
| |
| err = abx500_mask_and_set_register_interruptible( |
| &pdev->dev, |
| ab8500_reg_init[id].bank, |
| ab8500_reg_init[id].addr, |
| ab8500_reg_init[id].mask, |
| value); |
| if (err < 0) { |
| dev_err(&pdev->dev, |
| "Failed to initialize 0x%02x, 0x%02x.\n", |
| ab8500_reg_init[id].bank, |
| ab8500_reg_init[id].addr); |
| return err; |
| } |
| |
| dev_vdbg(&pdev->dev, |
| "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", |
| ab8500_reg_init[id].bank, |
| ab8500_reg_init[id].addr, |
| ab8500_reg_init[id].mask, |
| value); |
| |
| return 0; |
| } |
| |
| static __devinit int ab8500_regulator_register(struct platform_device *pdev, |
| struct regulator_init_data *init_data, |
| int id, |
| struct device_node *np) |
| { |
| struct ab8500_regulator_info *info = NULL; |
| struct regulator_config config = { }; |
| int err; |
| |
| /* assign per-regulator data */ |
| info = &ab8500_regulator_info[id]; |
| info->dev = &pdev->dev; |
| |
| config.dev = &pdev->dev; |
| config.init_data = init_data; |
| config.driver_data = info; |
| config.of_node = np; |
| |
| /* fix for hardware before ab8500v2.0 */ |
| if (abx500_get_chip_id(info->dev) < 0x20) { |
| if (info->desc.id == AB8500_LDO_AUX3) { |
| info->desc.n_voltages = |
| ARRAY_SIZE(ldo_vauxn_voltages); |
| info->voltages = ldo_vauxn_voltages; |
| info->voltages_len = |
| ARRAY_SIZE(ldo_vauxn_voltages); |
| info->voltage_mask = 0xf; |
| } |
| } |
| |
| /* register regulator with framework */ |
| info->regulator = regulator_register(&info->desc, &config); |
| if (IS_ERR(info->regulator)) { |
| err = PTR_ERR(info->regulator); |
| dev_err(&pdev->dev, "failed to register regulator %s\n", |
| info->desc.name); |
| /* when we fail, un-register all earlier regulators */ |
| while (--id >= 0) { |
| info = &ab8500_regulator_info[id]; |
| regulator_unregister(info->regulator); |
| } |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static struct of_regulator_match ab8500_regulator_matches[] = { |
| { .name = "LDO-AUX1", .driver_data = (void *) AB8500_LDO_AUX1, }, |
| { .name = "LDO-AUX2", .driver_data = (void *) AB8500_LDO_AUX2, }, |
| { .name = "LDO-AUX3", .driver_data = (void *) AB8500_LDO_AUX3, }, |
| { .name = "LDO-INTCORE", .driver_data = (void *) AB8500_LDO_INTCORE, }, |
| { .name = "LDO-TVOUT", .driver_data = (void *) AB8500_LDO_TVOUT, }, |
| { .name = "LDO-USB", .driver_data = (void *) AB8500_LDO_USB, }, |
| { .name = "LDO-AUDIO", .driver_data = (void *) AB8500_LDO_AUDIO, }, |
| { .name = "LDO-ANAMIC1", .driver_data = (void *) AB8500_LDO_ANAMIC1, }, |
| { .name = "LDO-ANAMIC2", .driver_data = (void *) AB8500_LDO_ANAMIC2, }, |
| { .name = "LDO-DMIC", .driver_data = (void *) AB8500_LDO_DMIC, }, |
| { .name = "LDO-ANA", .driver_data = (void *) AB8500_LDO_ANA, }, |
| }; |
| |
| static __devinit int |
| ab8500_regulator_of_probe(struct platform_device *pdev, struct device_node *np) |
| { |
| int err, i; |
| |
| for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) { |
| err = ab8500_regulator_register( |
| pdev, ab8500_regulator_matches[i].init_data, |
| i, ab8500_regulator_matches[i].of_node); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static __devinit int ab8500_regulator_probe(struct platform_device *pdev) |
| { |
| struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); |
| struct ab8500_platform_data *pdata; |
| struct device_node *np = pdev->dev.of_node; |
| int i, err; |
| |
| if (np) { |
| err = of_regulator_match(&pdev->dev, np, |
| ab8500_regulator_matches, |
| ARRAY_SIZE(ab8500_regulator_matches)); |
| if (err < 0) { |
| dev_err(&pdev->dev, |
| "Error parsing regulator init data: %d\n", err); |
| return err; |
| } |
| |
| err = ab8500_regulator_of_probe(pdev, np); |
| return err; |
| } |
| |
| if (!ab8500) { |
| dev_err(&pdev->dev, "null mfd parent\n"); |
| return -EINVAL; |
| } |
| pdata = dev_get_platdata(ab8500->dev); |
| if (!pdata) { |
| dev_err(&pdev->dev, "null pdata\n"); |
| return -EINVAL; |
| } |
| |
| /* make sure the platform data has the correct size */ |
| if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) { |
| dev_err(&pdev->dev, "Configuration error: size mismatch.\n"); |
| return -EINVAL; |
| } |
| |
| /* initialize registers */ |
| for (i = 0; i < pdata->num_regulator_reg_init; i++) { |
| int id, value; |
| |
| id = pdata->regulator_reg_init[i].id; |
| value = pdata->regulator_reg_init[i].value; |
| |
| /* check for configuration errors */ |
| if (id >= AB8500_NUM_REGULATOR_REGISTERS) { |
| dev_err(&pdev->dev, |
| "Configuration error: id outside range.\n"); |
| return -EINVAL; |
| } |
| |
| err = ab8500_regulator_init_registers(pdev, id, value); |
| if (err < 0) |
| return err; |
| } |
| |
| /* register all regulators */ |
| for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) { |
| err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL); |
| if (err < 0) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static __devexit int ab8500_regulator_remove(struct platform_device *pdev) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) { |
| struct ab8500_regulator_info *info = NULL; |
| info = &ab8500_regulator_info[i]; |
| |
| dev_vdbg(rdev_get_dev(info->regulator), |
| "%s-remove\n", info->desc.name); |
| |
| regulator_unregister(info->regulator); |
| } |
| |
| return 0; |
| } |
| |
| static const struct of_device_id ab8500_regulator_match[] = { |
| { .compatible = "stericsson,ab8500-regulator", }, |
| {} |
| }; |
| |
| static struct platform_driver ab8500_regulator_driver = { |
| .probe = ab8500_regulator_probe, |
| .remove = __devexit_p(ab8500_regulator_remove), |
| .driver = { |
| .name = "ab8500-regulator", |
| .owner = THIS_MODULE, |
| .of_match_table = ab8500_regulator_match, |
| }, |
| }; |
| |
| static int __init ab8500_regulator_init(void) |
| { |
| int ret; |
| |
| ret = platform_driver_register(&ab8500_regulator_driver); |
| if (ret != 0) |
| pr_err("Failed to register ab8500 regulator: %d\n", ret); |
| |
| return ret; |
| } |
| subsys_initcall(ab8500_regulator_init); |
| |
| static void __exit ab8500_regulator_exit(void) |
| { |
| platform_driver_unregister(&ab8500_regulator_driver); |
| } |
| module_exit(ab8500_regulator_exit); |
| |
| MODULE_LICENSE("GPL v2"); |
| MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>"); |
| MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC"); |
| MODULE_ALIAS("platform:ab8500-regulator"); |
