/* * Copyright (C) ST-Ericsson SA 2010 * * License Terms: GNU General Public License v2 * * Authors: Bengt Jonsson * * This file is based on drivers/regulator/ab8500.c * * AB8500 external regulators * * ab8500-ext supports the following regulators: * - VextSupply3 */ #include #include #include #include #include #include #include #include #include #include #include #include static struct regulator_consumer_supply ab8500_vaux1_consumers[] = { /* Main display, u8500 R3 uib */ REGULATOR_SUPPLY("vddi", "mcde_disp_sony_acx424akp.0"), /* Main display, u8500 uib and ST uib */ REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.0"), /* Secondary display, ST uib */ REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.1"), /* SFH7741 proximity sensor */ REGULATOR_SUPPLY("vcc", "gpio-keys.0"), /* BH1780GLS ambient light sensor */ REGULATOR_SUPPLY("vcc", "2-0029"), /* lsm303dlh accelerometer */ REGULATOR_SUPPLY("vdd", "2-0018"), /* lsm303dlhc accelerometer */ REGULATOR_SUPPLY("vdd", "2-0019"), /* lsm303dlh magnetometer */ REGULATOR_SUPPLY("vdd", "2-001e"), /* Rohm BU21013 Touchscreen devices */ REGULATOR_SUPPLY("avdd", "3-005c"), REGULATOR_SUPPLY("avdd", "3-005d"), /* Synaptics RMI4 Touchscreen device */ REGULATOR_SUPPLY("vdd", "3-004b"), /* L3G4200D Gyroscope device */ REGULATOR_SUPPLY("vdd", "2-0068"), /* Ambient light sensor device */ REGULATOR_SUPPLY("vdd", "3-0029"), /* Pressure sensor device */ REGULATOR_SUPPLY("vdd", "2-005c"), /* Cypress TrueTouch Touchscreen device */ REGULATOR_SUPPLY("vcpin", "spi8.0"), /* Camera device */ REGULATOR_SUPPLY("vaux12v5", "mmio_camera"), }; static struct regulator_consumer_supply ab8500_vaux2_consumers[] = { /* On-board eMMC power */ REGULATOR_SUPPLY("vmmc", "sdi4"), /* AB8500 audio codec */ REGULATOR_SUPPLY("vcc-N2158", "ab8500-codec.0"), /* AB8500 accessory detect 1 */ REGULATOR_SUPPLY("vcc-N2158", "ab8500-acc-det.0"), /* AB8500 Tv-out device */ REGULATOR_SUPPLY("vcc-N2158", "mcde_tv_ab8500.4"), /* AV8100 HDMI device */ REGULATOR_SUPPLY("vcc-N2158", "av8100_hdmi.3"), }; static struct regulator_consumer_supply ab8500_vaux3_consumers[] = { REGULATOR_SUPPLY("v-SD-STM", "stm"), /* External MMC slot power */ REGULATOR_SUPPLY("vmmc", "sdi0"), }; static struct regulator_consumer_supply ab8500_vtvout_consumers[] = { /* TV-out DENC supply */ REGULATOR_SUPPLY("vtvout", "ab8500-denc.0"), /* Internal general-purpose ADC */ REGULATOR_SUPPLY("vddadc", "ab8500-gpadc.0"), /* ADC for charger */ REGULATOR_SUPPLY("vddadc", "ab8500-charger.0"), /* AB8500 Tv-out device */ REGULATOR_SUPPLY("vtvout", "mcde_tv_ab8500.4"), }; static struct regulator_consumer_supply ab8500_vaud_consumers[] = { /* AB8500 audio-codec main supply */ REGULATOR_SUPPLY("vaud", "ab8500-codec.0"), }; static struct regulator_consumer_supply ab8500_vamic1_consumers[] = { /* AB8500 audio-codec Mic1 supply */ REGULATOR_SUPPLY("vamic1", "ab8500-codec.0"), }; static struct regulator_consumer_supply ab8500_vamic2_consumers[] = { /* AB8500 audio-codec Mic2 supply */ REGULATOR_SUPPLY("vamic2", "ab8500-codec.0"), }; static struct regulator_consumer_supply ab8500_vdmic_consumers[] = { /* AB8500 audio-codec DMic supply */ REGULATOR_SUPPLY("vdmic", "ab8500-codec.0"), }; static struct regulator_consumer_supply ab8500_vintcore_consumers[] = { /* SoC core supply, no device */ REGULATOR_SUPPLY("v-intcore", NULL), /* USB Transceiver */ REGULATOR_SUPPLY("vddulpivio18", "ab8500-usb.0"), /* Handled by abx500 clk driver */ REGULATOR_SUPPLY("v-intcore", "abx500-clk.0"), }; static struct regulator_consumer_supply ab8500_vana_consumers[] = { /* DB8500 DSI */ REGULATOR_SUPPLY("vdddsi1v2", "mcde"), REGULATOR_SUPPLY("vdddsi1v2", "b2r2_core"), REGULATOR_SUPPLY("vdddsi1v2", "b2r2_1_core"), REGULATOR_SUPPLY("vdddsi1v2", "dsilink.0"), REGULATOR_SUPPLY("vdddsi1v2", "dsilink.1"), REGULATOR_SUPPLY("vdddsi1v2", "dsilink.2"), /* DB8500 CSI */ REGULATOR_SUPPLY("vddcsi1v2", "mmio_camera"), }; /* ab8500 regulator register initialization */ static struct ab8500_regulator_reg_init ab8500_reg_init[] = { /* * VanaRequestCtrl = HP/LP depending on VxRequest * VextSupply1RequestCtrl = HP/LP depending on VxRequest */ INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL2, 0xf0, 0x00), /* * VextSupply2RequestCtrl = HP/LP depending on VxRequest * VextSupply3RequestCtrl = HP/LP depending on VxRequest * Vaux1RequestCtrl = HP/LP depending on VxRequest * Vaux2RequestCtrl = HP/LP depending on VxRequest */ INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL3, 0xff, 0x00), /* * Vaux3RequestCtrl = HP/LP depending on VxRequest * SwHPReq = Control through SWValid disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL4, 0x07, 0x00), /* * VanaSysClkReq1HPValid = disabled * Vaux1SysClkReq1HPValid = disabled * Vaux2SysClkReq1HPValid = disabled * Vaux3SysClkReq1HPValid = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID1, 0xe8, 0x00), /* * VextSupply1SysClkReq1HPValid = disabled * VextSupply2SysClkReq1HPValid = disabled * VextSupply3SysClkReq1HPValid = SysClkReq1 controlled */ INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID2, 0x70, 0x40), /* * VanaHwHPReq1Valid = disabled * Vaux1HwHPreq1Valid = disabled * Vaux2HwHPReq1Valid = disabled * Vaux3HwHPReqValid = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID1, 0xe8, 0x00), /* * VextSupply1HwHPReq1Valid = disabled * VextSupply2HwHPReq1Valid = disabled * VextSupply3HwHPReq1Valid = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID2, 0x07, 0x00), /* * VanaHwHPReq2Valid = disabled * Vaux1HwHPReq2Valid = disabled * Vaux2HwHPReq2Valid = disabled * Vaux3HwHPReq2Valid = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID1, 0xe8, 0x00), /* * VextSupply1HwHPReq2Valid = disabled * VextSupply2HwHPReq2Valid = disabled * VextSupply3HwHPReq2Valid = HWReq2 controlled */ INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID2, 0x07, 0x04), /* * VanaSwHPReqValid = disabled * Vaux1SwHPReqValid = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID1, 0xa0, 0x00), /* * Vaux2SwHPReqValid = disabled * Vaux3SwHPReqValid = disabled * VextSupply1SwHPReqValid = disabled * VextSupply2SwHPReqValid = disabled * VextSupply3SwHPReqValid = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID2, 0x1f, 0x00), /* * SysClkReq2Valid1 = SysClkReq2 controlled * SysClkReq3Valid1 = disabled * SysClkReq4Valid1 = SysClkReq4 controlled * SysClkReq5Valid1 = disabled * SysClkReq6Valid1 = SysClkReq6 controlled * SysClkReq7Valid1 = disabled * SysClkReq8Valid1 = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID1, 0xfe, 0x2a), /* * SysClkReq2Valid2 = disabled * SysClkReq3Valid2 = disabled * SysClkReq4Valid2 = disabled * SysClkReq5Valid2 = disabled * SysClkReq6Valid2 = SysClkReq6 controlled * SysClkReq7Valid2 = disabled * SysClkReq8Valid2 = disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID2, 0xfe, 0x20), /* * VTVoutEna = disabled * Vintcore12Ena = disabled * Vintcore12Sel = 1.25 V * Vintcore12LP = inactive (HP) * VTVoutLP = inactive (HP) */ INIT_REGULATOR_REGISTER(AB8500_REGUMISC1, 0xfe, 0x10), /* * VaudioEna = disabled * VdmicEna = disabled * Vamic1Ena = disabled * Vamic2Ena = disabled */ INIT_REGULATOR_REGISTER(AB8500_VAUDIOSUPPLY, 0x1e, 0x00), /* * Vamic1_dzout = high-Z when Vamic1 is disabled * Vamic2_dzout = high-Z when Vamic2 is disabled */ INIT_REGULATOR_REGISTER(AB8500_REGUCTRL1VAMIC, 0x03, 0x00), /* * VPll = Hw controlled (NOTE! PRCMU bits) * VanaRegu = force off */ INIT_REGULATOR_REGISTER(AB8500_VPLLVANAREGU, 0x0f, 0x02), /* * VrefDDREna = disabled * VrefDDRSleepMode = inactive (no pulldown) */ INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x03, 0x00), /* * VextSupply1Regu = force LP * VextSupply2Regu = force OFF * VextSupply3Regu = force HP (-> STBB2=LP and TPS=LP) * ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0 * ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0 */ INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x13), /* * Vaux1Regu = force HP * Vaux2Regu = force off */ INIT_REGULATOR_REGISTER(AB8500_VAUX12REGU, 0x0f, 0x01), /* * Vaux3Regu = force off */ INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3REGU, 0x03, 0x00), /* * Vaux1Sel = 2.8 V */ INIT_REGULATOR_REGISTER(AB8500_VAUX1SEL, 0x0f, 0x0C), /* * Vaux2Sel = 2.9 V */ INIT_REGULATOR_REGISTER(AB8500_VAUX2SEL, 0x0f, 0x0d), /* * Vaux3Sel = 2.91 V */ INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3SEL, 0x07, 0x07), /* * VextSupply12LP = disabled (no LP) */ INIT_REGULATOR_REGISTER(AB8500_REGUCTRL2SPARE, 0x01, 0x00), /* * Vaux1Disch = short discharge time * Vaux2Disch = short discharge time * Vaux3Disch = short discharge time * Vintcore12Disch = short discharge time * VTVoutDisch = short discharge time * VaudioDisch = short discharge time */ INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH, 0xfc, 0x00), /* * VanaDisch = short discharge time * VdmicPullDownEna = pulldown disabled when Vdmic is disabled * VdmicDisch = short discharge time */ INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH2, 0x16, 0x00), }; /* AB8500 regulators */ static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = { /* supplies to the display/camera */ [AB8500_LDO_AUX1] = { .supply_regulator = "ab8500-ext-supply3", .constraints = { .name = "V-DISPLAY", .min_uV = 2800000, .max_uV = 3300000, .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS, .boot_on = 1, /* display is on at boot */ }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux1_consumers), .consumer_supplies = ab8500_vaux1_consumers, }, /* supplies to the on-board eMMC */ [AB8500_LDO_AUX2] = { .supply_regulator = "ab8500-ext-supply3", .constraints = { .name = "V-eMMC1", .min_uV = 1100000, .max_uV = 3300000, .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_MODE, .valid_modes_mask = REGULATOR_MODE_NORMAL | REGULATOR_MODE_IDLE, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux2_consumers), .consumer_supplies = ab8500_vaux2_consumers, }, /* supply for VAUX3, supplies to SDcard slots */ [AB8500_LDO_AUX3] = { .supply_regulator = "ab8500-ext-supply3", .constraints = { .name = "V-MMC-SD", .min_uV = 1100000, .max_uV = 3300000, .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_MODE, .valid_modes_mask = REGULATOR_MODE_NORMAL | REGULATOR_MODE_IDLE, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux3_consumers), .consumer_supplies = ab8500_vaux3_consumers, }, /* supply for tvout, gpadc, TVOUT LDO */ [AB8500_LDO_TVOUT] = { .constraints = { .name = "V-TVOUT", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vtvout_consumers), .consumer_supplies = ab8500_vtvout_consumers, }, /* supply for ab8500-vaudio, VAUDIO LDO */ [AB8500_LDO_AUDIO] = { .constraints = { .name = "V-AUD", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vaud_consumers), .consumer_supplies = ab8500_vaud_consumers, }, /* supply for v-anamic1 VAMic1-LDO */ [AB8500_LDO_ANAMIC1] = { .constraints = { .name = "V-AMIC1", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic1_consumers), .consumer_supplies = ab8500_vamic1_consumers, }, /* supply for v-amic2, VAMIC2 LDO, reuse constants for AMIC1 */ [AB8500_LDO_ANAMIC2] = { .constraints = { .name = "V-AMIC2", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic2_consumers), .consumer_supplies = ab8500_vamic2_consumers, }, /* supply for v-dmic, VDMIC LDO */ [AB8500_LDO_DMIC] = { .constraints = { .name = "V-DMIC", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vdmic_consumers), .consumer_supplies = ab8500_vdmic_consumers, }, /* supply for v-intcore12, VINTCORE12 LDO */ [AB8500_LDO_INTCORE] = { .constraints = { .name = "V-INTCORE", .min_uV = 1250000, .max_uV = 1350000, .input_uV = 1800000, .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS | REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_DRMS, .valid_modes_mask = REGULATOR_MODE_NORMAL | REGULATOR_MODE_IDLE, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vintcore_consumers), .consumer_supplies = ab8500_vintcore_consumers, }, /* supply for U8500 CSI-DSI, VANA LDO */ [AB8500_LDO_ANA] = { .constraints = { .name = "V-CSI-DSI", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_vana_consumers), .consumer_supplies = ab8500_vana_consumers, }, }; /* supply for VextSupply3 */ static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = { /* SIM supply for 3 V SIM cards */ REGULATOR_SUPPLY("vinvsim", "sim-detect.0"), }; /* * AB8500 external regulators */ static struct regulator_init_data ab8500_ext_regulators[] = { /* fixed Vbat supplies VSMPS1_EXT_1V8 */ [AB8500_EXT_SUPPLY1] = { .constraints = { .name = "ab8500-ext-supply1", .min_uV = 1800000, .max_uV = 1800000, .initial_mode = REGULATOR_MODE_IDLE, .boot_on = 1, .always_on = 1, }, }, /* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */ [AB8500_EXT_SUPPLY2] = { .constraints = { .name = "ab8500-ext-supply2", .min_uV = 1360000, .max_uV = 1360000, }, }, /* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */ [AB8500_EXT_SUPPLY3] = { .constraints = { .name = "ab8500-ext-supply3", .min_uV = 3400000, .max_uV = 3400000, .valid_ops_mask = REGULATOR_CHANGE_STATUS, .boot_on = 1, }, .num_consumer_supplies = ARRAY_SIZE(ab8500_ext_supply3_consumers), .consumer_supplies = ab8500_ext_supply3_consumers, }, }; static struct ab8500_regulator_platform_data ab8500_regulator_plat_data = { .reg_init = ab8500_reg_init, .num_reg_init = ARRAY_SIZE(ab8500_reg_init), .regulator = ab8500_regulators, .num_regulator = ARRAY_SIZE(ab8500_regulators), .ext_regulator = ab8500_ext_regulators, .num_ext_regulator = ARRAY_SIZE(ab8500_ext_regulators), }; /** * struct ab8500_ext_regulator_info - ab8500 regulator information * @dev: device pointer * @desc: regulator description * @cfg: regulator configuration (extension of regulator FW configuration) * @update_bank: bank to control on/off * @update_reg: register to control on/off * @update_mask: mask to enable/disable and set mode of regulator * @update_val: bits holding the regulator current mode * @update_val_hp: bits to set EN pin active (LPn pin deactive) * normally this means high power mode * @update_val_lp: bits to set EN pin active and LPn pin active * normally this means low power mode * @update_val_hw: bits to set regulator pins in HW control * SysClkReq pins and logic will choose mode */ struct ab8500_ext_regulator_info { struct device *dev; struct regulator_desc desc; struct ab8500_ext_regulator_cfg *cfg; u8 update_bank; u8 update_reg; u8 update_mask; u8 update_val; u8 update_val_hp; u8 update_val_lp; u8 update_val_hw; }; static int ab8500_ext_regulator_enable(struct regulator_dev *rdev) { int ret; struct ab8500_ext_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; } /* * To satisfy both HW high power request and SW request, the regulator * must be on in high power. */ if (info->cfg && info->cfg->hwreq) regval = info->update_val_hp; else regval = info->update_val; ret = abx500_mask_and_set_register_interruptible(info->dev, info->update_bank, info->update_reg, info->update_mask, regval); if (ret < 0) { dev_err(rdev_get_dev(rdev), "couldn't set enable bits for regulator\n"); return ret; } dev_dbg(rdev_get_dev(rdev), "%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", info->desc.name, info->update_bank, info->update_reg, info->update_mask, regval); return 0; } static int ab8500_ext_regulator_disable(struct regulator_dev *rdev) { int ret; struct ab8500_ext_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 regulator in HW request mode if configured */ if (info->cfg && info->cfg->hwreq) regval = info->update_val_hw; else regval = 0; ret = abx500_mask_and_set_register_interruptible(info->dev, info->update_bank, info->update_reg, info->update_mask, regval); if (ret < 0) { dev_err(rdev_get_dev(rdev), "couldn't set disable bits for regulator\n"); return ret; } dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):" " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", info->desc.name, info->update_bank, info->update_reg, info->update_mask, regval); return 0; } static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev) { int ret; struct ab8500_ext_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_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):" " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", info->desc.name, info->update_bank, info->update_reg, info->update_mask, regval); if (((regval & info->update_mask) == info->update_val_lp) || ((regval & info->update_mask) == info->update_val_hp)) return 1; else return 0; } static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev, unsigned int mode) { int ret = 0; struct ab8500_ext_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; } switch (mode) { case REGULATOR_MODE_NORMAL: regval = info->update_val_hp; break; case REGULATOR_MODE_IDLE: regval = info->update_val_lp; break; default: return -EINVAL; } /* If regulator is enabled and info->cfg->hwreq is set, the regulator must be on in high power, so we don't need to write the register with the same value. */ if (ab8500_ext_regulator_is_enabled(rdev) && !(info->cfg && info->cfg->hwreq)) { ret = abx500_mask_and_set_register_interruptible(info->dev, info->update_bank, info->update_reg, info->update_mask, regval); if (ret < 0) { dev_err(rdev_get_dev(rdev), "Could not set regulator mode.\n"); return ret; } dev_dbg(rdev_get_dev(rdev), "%s-set_mode (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); } info->update_val = regval; return 0; } static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev) { struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); int ret; if (info == NULL) { dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); return -EINVAL; } if (info->update_val == info->update_val_hp) ret = REGULATOR_MODE_NORMAL; else if (info->update_val == info->update_val_lp) ret = REGULATOR_MODE_IDLE; else ret = -EINVAL; return ret; } static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, unsigned *selector) { struct regulation_constraints *regu_constraints = rdev->constraints; if (!regu_constraints) { dev_err(rdev_get_dev(rdev), "No regulator constraints\n"); return -EINVAL; } if (regu_constraints->min_uV == min_uV && regu_constraints->max_uV == max_uV) return 0; dev_err(rdev_get_dev(rdev), "Requested min %duV max %duV != constrained min %duV max %duV\n", min_uV, max_uV, regu_constraints->min_uV, regu_constraints->max_uV); return -EINVAL; } static int ab8500_ext_list_voltage(struct regulator_dev *rdev, unsigned selector) { struct regulation_constraints *regu_constraints = rdev->constraints; if (regu_constraints == NULL) { dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n"); return -EINVAL; } /* return the uV for the fixed regulators */ if (regu_constraints->min_uV && regu_constraints->max_uV) { if (regu_constraints->min_uV == regu_constraints->max_uV) return regu_constraints->min_uV; } return -EINVAL; } static struct regulator_ops ab8500_ext_regulator_ops = { .enable = ab8500_ext_regulator_enable, .disable = ab8500_ext_regulator_disable, .is_enabled = ab8500_ext_regulator_is_enabled, .set_mode = ab8500_ext_regulator_set_mode, .get_mode = ab8500_ext_regulator_get_mode, .set_voltage = ab8500_ext_set_voltage, .list_voltage = ab8500_ext_list_voltage, }; static struct ab8500_ext_regulator_info ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = { [AB8500_EXT_SUPPLY1] = { .desc = { .name = "VEXTSUPPLY1", .of_match = of_match_ptr("ab8500_ext1"), .ops = &ab8500_ext_regulator_ops, .type = REGULATOR_VOLTAGE, .id = AB8500_EXT_SUPPLY1, .owner = THIS_MODULE, .n_voltages = 1, }, .update_bank = 0x04, .update_reg = 0x08, .update_mask = 0x03, .update_val = 0x01, .update_val_hp = 0x01, .update_val_lp = 0x03, .update_val_hw = 0x02, }, [AB8500_EXT_SUPPLY2] = { .desc = { .name = "VEXTSUPPLY2", .of_match = of_match_ptr("ab8500_ext2"), .ops = &ab8500_ext_regulator_ops, .type = REGULATOR_VOLTAGE, .id = AB8500_EXT_SUPPLY2, .owner = THIS_MODULE, .n_voltages = 1, }, .update_bank = 0x04, .update_reg = 0x08, .update_mask = 0x0c, .update_val = 0x04, .update_val_hp = 0x04, .update_val_lp = 0x0c, .update_val_hw = 0x08, }, [AB8500_EXT_SUPPLY3] = { .desc = { .name = "VEXTSUPPLY3", .of_match = of_match_ptr("ab8500_ext3"), .ops = &ab8500_ext_regulator_ops, .type = REGULATOR_VOLTAGE, .id = AB8500_EXT_SUPPLY3, .owner = THIS_MODULE, .n_voltages = 1, }, .update_bank = 0x04, .update_reg = 0x08, .update_mask = 0x30, .update_val = 0x10, .update_val_hp = 0x10, .update_val_lp = 0x30, .update_val_hw = 0x20, }, }; static int ab8500_ext_regulator_probe(struct platform_device *pdev) { struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); struct ab8500_regulator_platform_data *pdata = &ab8500_regulator_plat_data; struct regulator_config config = { }; struct regulator_dev *rdev; int i; if (!ab8500) { dev_err(&pdev->dev, "null mfd parent\n"); return -EINVAL; } /* make sure the platform data has the correct size */ if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) { dev_err(&pdev->dev, "Configuration error: size mismatch.\n"); return -EINVAL; } /* check for AB8500 2.x */ if (is_ab8500_2p0_or_earlier(ab8500)) { struct ab8500_ext_regulator_info *info; /* VextSupply3LPn is inverted on AB8500 2.x */ info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3]; info->update_val = 0x30; info->update_val_hp = 0x30; info->update_val_lp = 0x10; } /* register all regulators */ for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) { struct ab8500_ext_regulator_info *info = NULL; /* assign per-regulator data */ info = &ab8500_ext_regulator_info[i]; info->dev = &pdev->dev; info->cfg = (struct ab8500_ext_regulator_cfg *) pdata->ext_regulator[i].driver_data; config.dev = &pdev->dev; config.driver_data = info; config.init_data = &pdata->ext_regulator[i]; /* register regulator with framework */ rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register regulator %s\n", info->desc.name); return PTR_ERR(rdev); } dev_dbg(&pdev->dev, "%s-probed\n", info->desc.name); } return 0; } static struct platform_driver ab8500_ext_regulator_driver = { .probe = ab8500_ext_regulator_probe, .driver = { .name = "ab8500-ext-regulator", }, }; static int __init ab8500_ext_regulator_init(void) { int ret; ret = platform_driver_register(&ab8500_ext_regulator_driver); if (ret) pr_err("Failed to register ab8500 ext regulator: %d\n", ret); return ret; } subsys_initcall(ab8500_ext_regulator_init); static void __exit ab8500_ext_regulator_exit(void) { platform_driver_unregister(&ab8500_ext_regulator_driver); } module_exit(ab8500_ext_regulator_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Bengt Jonsson "); MODULE_DESCRIPTION("AB8500 external regulator driver"); MODULE_ALIAS("platform:ab8500-ext-regulator");