/* * twl-regulator.c -- support regulators in twl4030/twl6030 family chips * * Copyright (C) 2008 David Brownell * * 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; either version 2 of the License, or * (at your option) any later version. */ #include <linux/module.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <linux/i2c/twl.h> /* * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a * USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions * include an audio codec, battery charger, and more voltage regulators. * These chips are often used in OMAP-based systems. * * This driver implements software-based resource control for various * voltage regulators. This is usually augmented with state machine * based control. */ struct twlreg_info { /* start of regulator's PM_RECEIVER control register bank */ u8 base; /* twl resource ID, for resource control state machine */ u8 id; /* voltage in mV = table[VSEL]; table_len must be a power-of-two */ u8 table_len; const u16 *table; /* State REMAP default configuration */ u8 remap; /* chip constraints on regulator behavior */ u16 min_mV; u16 max_mV; u8 flags; /* used by regulator core */ struct regulator_desc desc; /* chip specific features */ unsigned long features; /* * optional override functions for voltage set/get * these are currently only used for SMPS regulators */ int (*get_voltage)(void *data); int (*set_voltage)(void *data, int target_uV); /* data passed from board for external get/set voltage */ void *data; }; /* LDO control registers ... offset is from the base of its register bank. * The first three registers of all power resource banks help hardware to * manage the various resource groups. */ /* Common offset in TWL4030/6030 */ #define VREG_GRP 0 /* TWL4030 register offsets */ #define VREG_TYPE 1 #define VREG_REMAP 2 #define VREG_DEDICATED 3 /* LDO control */ #define VREG_VOLTAGE_SMPS_4030 9 /* TWL6030 register offsets */ #define VREG_TRANS 1 #define VREG_STATE 2 #define VREG_VOLTAGE 3 #define VREG_VOLTAGE_SMPS 4 /* TWL6030 Misc register offsets */ #define VREG_BC_ALL 1 #define VREG_BC_REF 2 #define VREG_BC_PROC 3 #define VREG_BC_CLK_RST 4 /* TWL6030 LDO register values for CFG_STATE */ #define TWL6030_CFG_STATE_OFF 0x00 #define TWL6030_CFG_STATE_ON 0x01 #define TWL6030_CFG_STATE_OFF2 0x02 #define TWL6030_CFG_STATE_SLEEP 0x03 #define TWL6030_CFG_STATE_GRP_SHIFT 5 #define TWL6030_CFG_STATE_APP_SHIFT 2 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT) #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\ TWL6030_CFG_STATE_APP_SHIFT) /* Flags for SMPS Voltage reading */ #define SMPS_OFFSET_EN BIT(0) #define SMPS_EXTENDED_EN BIT(1) /* twl6032 SMPS EPROM values */ #define TWL6030_SMPS_OFFSET 0xB0 #define TWL6030_SMPS_MULT 0xB3 #define SMPS_MULTOFFSET_SMPS4 BIT(0) #define SMPS_MULTOFFSET_VIO BIT(1) #define SMPS_MULTOFFSET_SMPS3 BIT(6) static inline int twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset) { u8 value; int status; status = twl_i2c_read_u8(slave_subgp, &value, info->base + offset); return (status < 0) ? status : value; } static inline int twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset, u8 value) { return twl_i2c_write_u8(slave_subgp, value, info->base + offset); } /*----------------------------------------------------------------------*/ /* generic power resource operations, which work on all regulators */ static int twlreg_grp(struct regulator_dev *rdev) { return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER, VREG_GRP); } /* * Enable/disable regulators by joining/leaving the P1 (processor) group. * We assume nobody else is updating the DEV_GRP registers. */ /* definition for 4030 family */ #define P3_GRP_4030 BIT(7) /* "peripherals" */ #define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */ #define P1_GRP_4030 BIT(5) /* CPU/Linux */ /* definition for 6030 family */ #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */ #define P2_GRP_6030 BIT(1) /* "peripherals" */ #define P1_GRP_6030 BIT(0) /* CPU/Linux */ static int twl4030reg_is_enabled(struct regulator_dev *rdev) { int state = twlreg_grp(rdev); if (state < 0) return state; return state & P1_GRP_4030; } static int twl6030reg_is_enabled(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0, val; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) { grp = twlreg_grp(rdev); if (grp < 0) return grp; grp &= P1_GRP_6030; } else { grp = 1; } val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); val = TWL6030_CFG_STATE_APP(val); return grp && (val == TWL6030_CFG_STATE_ON); } static int twl4030reg_enable(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp; int ret; grp = twlreg_grp(rdev); if (grp < 0) return grp; grp |= P1_GRP_4030; ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp); return ret; } static int twl6030reg_enable(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0; int ret; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) grp = twlreg_grp(rdev); if (grp < 0) return grp; ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, grp << TWL6030_CFG_STATE_GRP_SHIFT | TWL6030_CFG_STATE_ON); return ret; } static int twl4030reg_disable(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp; int ret; grp = twlreg_grp(rdev); if (grp < 0) return grp; grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030); ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp); return ret; } static int twl6030reg_disable(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0; int ret; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030; /* For 6030, set the off state for all grps enabled */ ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, (grp) << TWL6030_CFG_STATE_GRP_SHIFT | TWL6030_CFG_STATE_OFF); return ret; } static int twl4030reg_get_status(struct regulator_dev *rdev) { int state = twlreg_grp(rdev); if (state < 0) return state; state &= 0x0f; /* assume state != WARM_RESET; we'd not be running... */ if (!state) return REGULATOR_STATUS_OFF; return (state & BIT(3)) ? REGULATOR_STATUS_NORMAL : REGULATOR_STATUS_STANDBY; } static int twl6030reg_get_status(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int val; val = twlreg_grp(rdev); if (val < 0) return val; val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); switch (TWL6030_CFG_STATE_APP(val)) { case TWL6030_CFG_STATE_ON: return REGULATOR_STATUS_NORMAL; case TWL6030_CFG_STATE_SLEEP: return REGULATOR_STATUS_STANDBY; case TWL6030_CFG_STATE_OFF: case TWL6030_CFG_STATE_OFF2: default: break; } return REGULATOR_STATUS_OFF; } static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode) { struct twlreg_info *info = rdev_get_drvdata(rdev); unsigned message; int status; /* We can only set the mode through state machine commands... */ switch (mode) { case REGULATOR_MODE_NORMAL: message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE); break; case REGULATOR_MODE_STANDBY: message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP); break; default: return -EINVAL; } /* Ensure the resource is associated with some group */ status = twlreg_grp(rdev); if (status < 0) return status; if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030))) return -EACCES; status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB); if (status < 0) return status; return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB); } static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0; int val; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) grp = twlreg_grp(rdev); if (grp < 0) return grp; /* Compose the state register settings */ val = grp << TWL6030_CFG_STATE_GRP_SHIFT; /* We can only set the mode through state machine commands... */ switch (mode) { case REGULATOR_MODE_NORMAL: val |= TWL6030_CFG_STATE_ON; break; case REGULATOR_MODE_STANDBY: val |= TWL6030_CFG_STATE_SLEEP; break; default: return -EINVAL; } return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val); } /*----------------------------------------------------------------------*/ /* * Support for adjustable-voltage LDOs uses a four bit (or less) voltage * select field in its control register. We use tables indexed by VSEL * to record voltages in milliVolts. (Accuracy is about three percent.) * * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon; * currently handled by listing two slightly different VAUX2 regulators, * only one of which will be configured. * * VSEL values documented as "TI cannot support these values" are flagged * in these tables as UNSUP() values; we normally won't assign them. * * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported. * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting. */ #define UNSUP_MASK 0x8000 #define UNSUP(x) (UNSUP_MASK | (x)) #define IS_UNSUP(info, x) \ ((UNSUP_MASK & (x)) && \ !((info)->features & TWL4030_ALLOW_UNSUPPORTED)) #define LDO_MV(x) (~UNSUP_MASK & (x)) static const u16 VAUX1_VSEL_table[] = { UNSUP(1500), UNSUP(1800), 2500, 2800, 3000, 3000, 3000, 3000, }; static const u16 VAUX2_4030_VSEL_table[] = { UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300, 1500, 1800, UNSUP(1850), 2500, UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), }; static const u16 VAUX2_VSEL_table[] = { 1700, 1700, 1900, 1300, 1500, 1800, 2000, 2500, 2100, 2800, 2200, 2300, 2400, 2400, 2400, 2400, }; static const u16 VAUX3_VSEL_table[] = { 1500, 1800, 2500, 2800, 3000, 3000, 3000, 3000, }; static const u16 VAUX4_VSEL_table[] = { 700, 1000, 1200, UNSUP(1300), 1500, 1800, UNSUP(1850), 2500, UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), }; static const u16 VMMC1_VSEL_table[] = { 1850, 2850, 3000, 3150, }; static const u16 VMMC2_VSEL_table[] = { UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300), UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500), 2600, 2800, 2850, 3000, 3150, 3150, 3150, 3150, }; static const u16 VPLL1_VSEL_table[] = { 1000, 1200, 1300, 1800, UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000), }; static const u16 VPLL2_VSEL_table[] = { 700, 1000, 1200, 1300, UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500), UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000), UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), }; static const u16 VSIM_VSEL_table[] = { UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800, 2800, 3000, 3000, 3000, }; static const u16 VDAC_VSEL_table[] = { 1200, 1300, 1800, 1800, }; static const u16 VIO_VSEL_table[] = { 1800, 1850, }; static const u16 VINTANA2_VSEL_table[] = { 2500, 2750, }; static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index) { struct twlreg_info *info = rdev_get_drvdata(rdev); int mV = info->table[index]; return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000); } static int twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, selector); } static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); if (vsel < 0) return vsel; vsel &= info->table_len - 1; return vsel; } static struct regulator_ops twl4030ldo_ops = { .list_voltage = twl4030ldo_list_voltage, .set_voltage_sel = twl4030ldo_set_voltage_sel, .get_voltage_sel = twl4030ldo_get_voltage_sel, .enable = twl4030reg_enable, .disable = twl4030reg_disable, .is_enabled = twl4030reg_is_enabled, .set_mode = twl4030reg_set_mode, .get_status = twl4030reg_get_status, }; static int twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, unsigned *selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = DIV_ROUND_UP(min_uV - 600000, 12500); if (info->set_voltage) { return info->set_voltage(info->data, min_uV); } else { twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS_4030, vsel); } return 0; } static int twl4030smps_get_voltage(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel; if (info->get_voltage) return info->get_voltage(info->data); vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS_4030); return vsel * 12500 + 600000; } static struct regulator_ops twl4030smps_ops = { .set_voltage = twl4030smps_set_voltage, .get_voltage = twl4030smps_get_voltage, }; static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, unsigned *selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); if (info->set_voltage) return info->set_voltage(info->data, min_uV); return -ENODEV; } static int twl6030coresmps_get_voltage(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); if (info->get_voltage) return info->get_voltage(info->data); return -ENODEV; } static struct regulator_ops twl6030coresmps_ops = { .set_voltage = twl6030coresmps_set_voltage, .get_voltage = twl6030coresmps_get_voltage, }; static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel) { struct twlreg_info *info = rdev_get_drvdata(rdev); switch (sel) { case 0: return 0; case 1 ... 24: /* Linear mapping from 00000001 to 00011000: * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001) */ return (info->min_mV + 100 * (sel - 1)) * 1000; case 25 ... 30: return -EINVAL; case 31: return 2750000; default: return -EINVAL; } } static int twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, selector); } static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); return vsel; } static struct regulator_ops twl6030ldo_ops = { .list_voltage = twl6030ldo_list_voltage, .set_voltage_sel = twl6030ldo_set_voltage_sel, .get_voltage_sel = twl6030ldo_get_voltage_sel, .enable = twl6030reg_enable, .disable = twl6030reg_disable, .is_enabled = twl6030reg_is_enabled, .set_mode = twl6030reg_set_mode, .get_status = twl6030reg_get_status, }; /*----------------------------------------------------------------------*/ static struct regulator_ops twl4030fixed_ops = { .list_voltage = regulator_list_voltage_linear, .enable = twl4030reg_enable, .disable = twl4030reg_disable, .is_enabled = twl4030reg_is_enabled, .set_mode = twl4030reg_set_mode, .get_status = twl4030reg_get_status, }; static struct regulator_ops twl6030fixed_ops = { .list_voltage = regulator_list_voltage_linear, .enable = twl6030reg_enable, .disable = twl6030reg_disable, .is_enabled = twl6030reg_is_enabled, .set_mode = twl6030reg_set_mode, .get_status = twl6030reg_get_status, }; /* * SMPS status and control */ static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index) { struct twlreg_info *info = rdev_get_drvdata(rdev); int voltage = 0; switch (info->flags) { case SMPS_OFFSET_EN: voltage = 100000; /* fall through */ case 0: switch (index) { case 0: voltage = 0; break; case 58: voltage = 1350 * 1000; break; case 59: voltage = 1500 * 1000; break; case 60: voltage = 1800 * 1000; break; case 61: voltage = 1900 * 1000; break; case 62: voltage = 2100 * 1000; break; default: voltage += (600000 + (12500 * (index - 1))); } break; case SMPS_EXTENDED_EN: switch (index) { case 0: voltage = 0; break; case 58: voltage = 2084 * 1000; break; case 59: voltage = 2315 * 1000; break; case 60: voltage = 2778 * 1000; break; case 61: voltage = 2932 * 1000; break; case 62: voltage = 3241 * 1000; break; default: voltage = (1852000 + (38600 * (index - 1))); } break; case SMPS_OFFSET_EN | SMPS_EXTENDED_EN: switch (index) { case 0: voltage = 0; break; case 58: voltage = 4167 * 1000; break; case 59: voltage = 2315 * 1000; break; case 60: voltage = 2778 * 1000; break; case 61: voltage = 2932 * 1000; break; case 62: voltage = 3241 * 1000; break; default: voltage = (2161000 + (38600 * (index - 1))); } break; } return voltage; } static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = 0; switch (info->flags) { case 0: if (min_uV == 0) vsel = 0; else if ((min_uV >= 600000) && (min_uV <= 1300000)) { vsel = DIV_ROUND_UP(min_uV - 600000, 12500); vsel++; } /* Values 1..57 for vsel are linear and can be calculated * values 58..62 are non linear. */ else if ((min_uV > 1900000) && (min_uV <= 2100000)) vsel = 62; else if ((min_uV > 1800000) && (min_uV <= 1900000)) vsel = 61; else if ((min_uV > 1500000) && (min_uV <= 1800000)) vsel = 60; else if ((min_uV > 1350000) && (min_uV <= 1500000)) vsel = 59; else if ((min_uV > 1300000) && (min_uV <= 1350000)) vsel = 58; else return -EINVAL; break; case SMPS_OFFSET_EN: if (min_uV == 0) vsel = 0; else if ((min_uV >= 700000) && (min_uV <= 1420000)) { vsel = DIV_ROUND_UP(min_uV - 700000, 12500); vsel++; } /* Values 1..57 for vsel are linear and can be calculated * values 58..62 are non linear. */ else if ((min_uV > 1900000) && (min_uV <= 2100000)) vsel = 62; else if ((min_uV > 1800000) && (min_uV <= 1900000)) vsel = 61; else if ((min_uV > 1350000) && (min_uV <= 1800000)) vsel = 60; else if ((min_uV > 1350000) && (min_uV <= 1500000)) vsel = 59; else if ((min_uV > 1300000) && (min_uV <= 1350000)) vsel = 58; else return -EINVAL; break; case SMPS_EXTENDED_EN: if (min_uV == 0) { vsel = 0; } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) { vsel = DIV_ROUND_UP(min_uV - 1852000, 38600); vsel++; } break; case SMPS_OFFSET_EN|SMPS_EXTENDED_EN: if (min_uV == 0) { vsel = 0; } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) { vsel = DIV_ROUND_UP(min_uV - 2161000, 38600); vsel++; } break; } return vsel; } static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS, selector); } static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS); } static struct regulator_ops twlsmps_ops = { .list_voltage = twl6030smps_list_voltage, .map_voltage = twl6030smps_map_voltage, .set_voltage_sel = twl6030smps_set_voltage_sel, .get_voltage_sel = twl6030smps_get_voltage_sel, .enable = twl6030reg_enable, .disable = twl6030reg_disable, .is_enabled = twl6030reg_is_enabled, .set_mode = twl6030reg_set_mode, .get_status = twl6030reg_get_status, }; /*----------------------------------------------------------------------*/ #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \ remap_conf) \ TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \ remap_conf, TWL4030, twl4030fixed_ops) #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \ TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \ 0x0, TWL6030, twl6030fixed_ops) #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \ static const struct twlreg_info TWL4030_INFO_##label = { \ .base = offset, \ .id = num, \ .table_len = ARRAY_SIZE(label##_VSEL_table), \ .table = label##_VSEL_table, \ .remap = remap_conf, \ .desc = { \ .name = #label, \ .id = TWL4030_REG_##label, \ .n_voltages = ARRAY_SIZE(label##_VSEL_table), \ .ops = &twl4030ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .enable_time = turnon_delay, \ }, \ } #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \ static const struct twlreg_info TWL4030_INFO_##label = { \ .base = offset, \ .id = num, \ .remap = remap_conf, \ .desc = { \ .name = #label, \ .id = TWL4030_REG_##label, \ .ops = &twl4030smps_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .enable_time = turnon_delay, \ }, \ } #define TWL6030_ADJUSTABLE_SMPS(label) \ static const struct twlreg_info TWL6030_INFO_##label = { \ .desc = { \ .name = #label, \ .id = TWL6030_REG_##label, \ .ops = &twl6030coresmps_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \ static const struct twlreg_info TWL6030_INFO_##label = { \ .base = offset, \ .min_mV = min_mVolts, \ .max_mV = max_mVolts, \ .desc = { \ .name = #label, \ .id = TWL6030_REG_##label, \ .n_voltages = 32, \ .ops = &twl6030ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \ static const struct twlreg_info TWL6032_INFO_##label = { \ .base = offset, \ .min_mV = min_mVolts, \ .max_mV = max_mVolts, \ .desc = { \ .name = #label, \ .id = TWL6032_REG_##label, \ .n_voltages = 32, \ .ops = &twl6030ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \ family, operations) \ static const struct twlreg_info TWLFIXED_INFO_##label = { \ .base = offset, \ .id = num, \ .min_mV = mVolts, \ .remap = remap_conf, \ .desc = { \ .name = #label, \ .id = family##_REG_##label, \ .n_voltages = 1, \ .ops = &operations, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = mVolts * 1000, \ .enable_time = turnon_delay, \ }, \ } #define TWL6032_ADJUSTABLE_SMPS(label, offset) \ static const struct twlreg_info TWLSMPS_INFO_##label = { \ .base = offset, \ .min_mV = 600, \ .max_mV = 2100, \ .desc = { \ .name = #label, \ .id = TWL6032_REG_##label, \ .n_voltages = 63, \ .ops = &twlsmps_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } /* * We list regulators here if systems need some level of * software control over them after boot. */ TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00); TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00); TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08); TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08); TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08); TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08); /* VUSBCP is managed *only* by the USB subchip */ /* 6030 REG with base as PMC Slave Misc : 0x0030 */ /* Turnon-delay and remap configuration values for 6030 are not verified since the specification is not public */ TWL6030_ADJUSTABLE_SMPS(VDD1); TWL6030_ADJUSTABLE_SMPS(VDD2); TWL6030_ADJUSTABLE_SMPS(VDD3); TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300); TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300); TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300); TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300); TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300); TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300); /* 6025 are renamed compared to 6030 versions */ TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300); TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300); TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08); TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08); TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08); TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08); TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08); TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0); TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0); TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0); TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0); TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0); TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0); TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34); TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10); TWL6032_ADJUSTABLE_SMPS(VIO, 0x16); static u8 twl_get_smps_offset(void) { u8 value; twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, TWL6030_SMPS_OFFSET); return value; } static u8 twl_get_smps_mult(void) { u8 value; twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, TWL6030_SMPS_MULT); return value; } #define TWL_OF_MATCH(comp, family, label) \ { \ .compatible = comp, \ .data = &family##_INFO_##label, \ } #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label) #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label) #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label) #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label) #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label) static const struct of_device_id twl_of_match[] = { TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1), TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030), TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2), TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3), TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4), TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1), TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2), TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1), TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2), TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM), TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC), TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2), TWL4030_OF_MATCH("ti,twl4030-vio", VIO), TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1), TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2), TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1), TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2), TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3), TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030), TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030), TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030), TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC), TWL6030_OF_MATCH("ti,twl6030-vpp", VPP), TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM), TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2), TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4), TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3), TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5), TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1), TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7), TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6), TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN), TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB), TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1), TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG), TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5), TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8), TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1), TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA), TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO), TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC), TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB), TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8), TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1), TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3), TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4), TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO), {}, }; MODULE_DEVICE_TABLE(of, twl_of_match); static int twlreg_probe(struct platform_device *pdev) { int i, id; struct twlreg_info *info; const struct twlreg_info *template; struct regulator_init_data *initdata; struct regulation_constraints *c; struct regulator_dev *rdev; struct twl_regulator_driver_data *drvdata; const struct of_device_id *match; struct regulator_config config = { }; match = of_match_device(twl_of_match, &pdev->dev); if (match) { template = match->data; id = template->desc.id; initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); drvdata = NULL; } else { id = pdev->id; initdata = dev_get_platdata(&pdev->dev); for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) { template = twl_of_match[i].data; if (template && template->desc.id == id) break; } if (i == ARRAY_SIZE(twl_of_match)) return -ENODEV; drvdata = initdata->driver_data; if (!drvdata) return -EINVAL; } if (!template) return -ENODEV; if (!initdata) return -EINVAL; info = kmemdup(template, sizeof (*info), GFP_KERNEL); if (!info) return -ENOMEM; if (drvdata) { /* copy the driver data into regulator data */ info->features = drvdata->features; info->data = drvdata->data; info->set_voltage = drvdata->set_voltage; info->get_voltage = drvdata->get_voltage; } /* Constrain board-specific capabilities according to what * this driver and the chip itself can actually do. */ c = &initdata->constraints; c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS; switch (id) { case TWL4030_REG_VIO: case TWL4030_REG_VDD1: case TWL4030_REG_VDD2: case TWL4030_REG_VPLL1: case TWL4030_REG_VINTANA1: case TWL4030_REG_VINTANA2: case TWL4030_REG_VINTDIG: c->always_on = true; break; default: break; } switch (id) { case TWL6032_REG_SMPS3: if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3) info->flags |= SMPS_EXTENDED_EN; if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3) info->flags |= SMPS_OFFSET_EN; break; case TWL6032_REG_SMPS4: if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4) info->flags |= SMPS_EXTENDED_EN; if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4) info->flags |= SMPS_OFFSET_EN; break; case TWL6032_REG_VIO: if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO) info->flags |= SMPS_EXTENDED_EN; if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO) info->flags |= SMPS_OFFSET_EN; break; } config.dev = &pdev->dev; config.init_data = initdata; config.driver_data = info; config.of_node = pdev->dev.of_node; rdev = regulator_register(&info->desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "can't register %s, %ld\n", info->desc.name, PTR_ERR(rdev)); kfree(info); return PTR_ERR(rdev); } platform_set_drvdata(pdev, rdev); if (twl_class_is_4030()) twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP, info->remap); /* NOTE: many regulators support short-circuit IRQs (presentable * as REGULATOR_OVER_CURRENT notifications?) configured via: * - SC_CONFIG * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) * - IT_CONFIG */ return 0; } static int twlreg_remove(struct platform_device *pdev) { struct regulator_dev *rdev = platform_get_drvdata(pdev); struct twlreg_info *info = rdev->reg_data; regulator_unregister(rdev); kfree(info); return 0; } MODULE_ALIAS("platform:twl_reg"); static struct platform_driver twlreg_driver = { .probe = twlreg_probe, .remove = twlreg_remove, /* NOTE: short name, to work around driver model truncation of * "twl_regulator.12" (and friends) to "twl_regulator.1". */ .driver = { .name = "twl_reg", .owner = THIS_MODULE, .of_match_table = of_match_ptr(twl_of_match), }, }; static int __init twlreg_init(void) { return platform_driver_register(&twlreg_driver); } subsys_initcall(twlreg_init); static void __exit twlreg_exit(void) { platform_driver_unregister(&twlreg_driver); } module_exit(twlreg_exit) MODULE_DESCRIPTION("TWL regulator driver"); MODULE_LICENSE("GPL");