diff options
Diffstat (limited to 'drivers/regulator/twl-regulator.c')
| -rw-r--r-- | drivers/regulator/twl-regulator.c | 1253 |
1 files changed, 1253 insertions, 0 deletions
diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c new file mode 100644 index 0000000..fb6e67d --- /dev/null +++ b/drivers/regulator/twl-regulator.c @@ -0,0 +1,1253 @@ +/* + * 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) + +/* twl6025 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 & TWL6025_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 & TWL6025_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 & TWL6025_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 & TWL6025_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 TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \ +static const struct twlreg_info TWL6025_INFO_##label = { \ + .base = offset, \ + .min_mV = min_mVolts, \ + .max_mV = max_mVolts, \ + .desc = { \ + .name = #label, \ + .id = TWL6025_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 TWL6025_ADJUSTABLE_SMPS(label, offset) \ +static const struct twlreg_info TWLSMPS_INFO_##label = { \ + .base = offset, \ + .min_mV = 600, \ + .max_mV = 2100, \ + .desc = { \ + .name = #label, \ + .id = TWL6025_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 */ +TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300); +TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300); +TWL6025_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); +TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34); +TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10); +TWL6025_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 TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, 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), + TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2), + TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4), + TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3), + TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5), + TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1), + TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7), + TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6), + TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN), + TWL6025_OF_MATCH("ti,twl6025-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,twl6025-smps3", SMPS3), + TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4), + TWLSMPS_OF_MATCH("ti,twl6025-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 = pdev->dev.platform_data; + 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 TWL6025_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 TWL6025_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 TWL6025_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"); |