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linux/drivers/regulator/qcom_spmi-regulator.c
Ilia Lin 0caecaa872
regulator: qcom_spmi: Add support for SAW 
Add support for SAW controlled regulators.
The regulators defined as SAW controlled in the device tree
will be controlled through special CPU registers instead of direct
SPMI accesses.
This is required especially for CPU supply regulators to synchronize
with clock scaling and for Automatic Voltage Switching.

Signed-off-by: Ilia Lin <ilialin@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-24 20:23:43 +01:00

1876 lines
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/*
* Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/ktime.h>
#include <linux/regulator/driver.h>
#include <linux/regmap.h>
#include <linux/list.h>
#include <linux/mfd/syscon.h>
#include <linux/io.h>
/* Pin control enable input pins. */
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10
/* Pin control high power mode input pins. */
#define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08
#define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10
#define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20
/*
* Used with enable parameters to specify that hardware default register values
* should be left unaltered.
*/
#define SPMI_REGULATOR_USE_HW_DEFAULT 2
/* Soft start strength of a voltage switch type regulator */
enum spmi_vs_soft_start_str {
SPMI_VS_SOFT_START_STR_0P05_UA = 0,
SPMI_VS_SOFT_START_STR_0P25_UA,
SPMI_VS_SOFT_START_STR_0P55_UA,
SPMI_VS_SOFT_START_STR_0P75_UA,
SPMI_VS_SOFT_START_STR_HW_DEFAULT,
};
/**
* struct spmi_regulator_init_data - spmi-regulator initialization data
* @pin_ctrl_enable: Bit mask specifying which hardware pins should be
* used to enable the regulator, if any
* Value should be an ORing of
* SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If
* the bit specified by
* SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is
* set, then pin control enable hardware registers
* will not be modified.
* @pin_ctrl_hpm: Bit mask specifying which hardware pins should be
* used to force the regulator into high power
* mode, if any
* Value should be an ORing of
* SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If
* the bit specified by
* SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is
* set, then pin control mode hardware registers
* will not be modified.
* @vs_soft_start_strength: This parameter sets the soft start strength for
* voltage switch type regulators. Its value
* should be one of SPMI_VS_SOFT_START_STR_*. If
* its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT,
* then the soft start strength will be left at its
* default hardware value.
*/
struct spmi_regulator_init_data {
unsigned pin_ctrl_enable;
unsigned pin_ctrl_hpm;
enum spmi_vs_soft_start_str vs_soft_start_strength;
};
/* These types correspond to unique register layouts. */
enum spmi_regulator_logical_type {
SPMI_REGULATOR_LOGICAL_TYPE_SMPS,
SPMI_REGULATOR_LOGICAL_TYPE_LDO,
SPMI_REGULATOR_LOGICAL_TYPE_VS,
SPMI_REGULATOR_LOGICAL_TYPE_BOOST,
SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS,
SPMI_REGULATOR_LOGICAL_TYPE_BOOST_BYP,
SPMI_REGULATOR_LOGICAL_TYPE_LN_LDO,
SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS,
SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS,
SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO,
};
enum spmi_regulator_type {
SPMI_REGULATOR_TYPE_BUCK = 0x03,
SPMI_REGULATOR_TYPE_LDO = 0x04,
SPMI_REGULATOR_TYPE_VS = 0x05,
SPMI_REGULATOR_TYPE_BOOST = 0x1b,
SPMI_REGULATOR_TYPE_FTS = 0x1c,
SPMI_REGULATOR_TYPE_BOOST_BYP = 0x1f,
SPMI_REGULATOR_TYPE_ULT_LDO = 0x21,
SPMI_REGULATOR_TYPE_ULT_BUCK = 0x22,
};
enum spmi_regulator_subtype {
SPMI_REGULATOR_SUBTYPE_GP_CTL = 0x08,
SPMI_REGULATOR_SUBTYPE_RF_CTL = 0x09,
SPMI_REGULATOR_SUBTYPE_N50 = 0x01,
SPMI_REGULATOR_SUBTYPE_N150 = 0x02,
SPMI_REGULATOR_SUBTYPE_N300 = 0x03,
SPMI_REGULATOR_SUBTYPE_N600 = 0x04,
SPMI_REGULATOR_SUBTYPE_N1200 = 0x05,
SPMI_REGULATOR_SUBTYPE_N600_ST = 0x06,
SPMI_REGULATOR_SUBTYPE_N1200_ST = 0x07,
SPMI_REGULATOR_SUBTYPE_N900_ST = 0x14,
SPMI_REGULATOR_SUBTYPE_N300_ST = 0x15,
SPMI_REGULATOR_SUBTYPE_P50 = 0x08,
SPMI_REGULATOR_SUBTYPE_P150 = 0x09,
SPMI_REGULATOR_SUBTYPE_P300 = 0x0a,
SPMI_REGULATOR_SUBTYPE_P600 = 0x0b,
SPMI_REGULATOR_SUBTYPE_P1200 = 0x0c,
SPMI_REGULATOR_SUBTYPE_LN = 0x10,
SPMI_REGULATOR_SUBTYPE_LV_P50 = 0x28,
SPMI_REGULATOR_SUBTYPE_LV_P150 = 0x29,
SPMI_REGULATOR_SUBTYPE_LV_P300 = 0x2a,
SPMI_REGULATOR_SUBTYPE_LV_P600 = 0x2b,
SPMI_REGULATOR_SUBTYPE_LV_P1200 = 0x2c,
SPMI_REGULATOR_SUBTYPE_LV_P450 = 0x2d,
SPMI_REGULATOR_SUBTYPE_LV100 = 0x01,
SPMI_REGULATOR_SUBTYPE_LV300 = 0x02,
SPMI_REGULATOR_SUBTYPE_MV300 = 0x08,
SPMI_REGULATOR_SUBTYPE_MV500 = 0x09,
SPMI_REGULATOR_SUBTYPE_HDMI = 0x10,
SPMI_REGULATOR_SUBTYPE_OTG = 0x11,
SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01,
SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08,
SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09,
SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f,
SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10,
};
enum spmi_common_regulator_registers {
SPMI_COMMON_REG_DIG_MAJOR_REV = 0x01,
SPMI_COMMON_REG_TYPE = 0x04,
SPMI_COMMON_REG_SUBTYPE = 0x05,
SPMI_COMMON_REG_VOLTAGE_RANGE = 0x40,
SPMI_COMMON_REG_VOLTAGE_SET = 0x41,
SPMI_COMMON_REG_MODE = 0x45,
SPMI_COMMON_REG_ENABLE = 0x46,
SPMI_COMMON_REG_PULL_DOWN = 0x48,
SPMI_COMMON_REG_SOFT_START = 0x4c,
SPMI_COMMON_REG_STEP_CTRL = 0x61,
};
enum spmi_vs_registers {
SPMI_VS_REG_OCP = 0x4a,
SPMI_VS_REG_SOFT_START = 0x4c,
};
enum spmi_boost_registers {
SPMI_BOOST_REG_CURRENT_LIMIT = 0x4a,
};
enum spmi_boost_byp_registers {
SPMI_BOOST_BYP_REG_CURRENT_LIMIT = 0x4b,
};
enum spmi_saw3_registers {
SAW3_SECURE = 0x00,
SAW3_ID = 0x04,
SAW3_SPM_STS = 0x0C,
SAW3_AVS_STS = 0x10,
SAW3_PMIC_STS = 0x14,
SAW3_RST = 0x18,
SAW3_VCTL = 0x1C,
SAW3_AVS_CTL = 0x20,
SAW3_AVS_LIMIT = 0x24,
SAW3_AVS_DLY = 0x28,
SAW3_AVS_HYSTERESIS = 0x2C,
SAW3_SPM_STS2 = 0x38,
SAW3_SPM_PMIC_DATA_3 = 0x4C,
SAW3_VERSION = 0xFD0,
};
/* Used for indexing into ctrl_reg. These are offets from 0x40 */
enum spmi_common_control_register_index {
SPMI_COMMON_IDX_VOLTAGE_RANGE = 0,
SPMI_COMMON_IDX_VOLTAGE_SET = 1,
SPMI_COMMON_IDX_MODE = 5,
SPMI_COMMON_IDX_ENABLE = 6,
};
/* Common regulator control register layout */
#define SPMI_COMMON_ENABLE_MASK 0x80
#define SPMI_COMMON_ENABLE 0x80
#define SPMI_COMMON_DISABLE 0x00
#define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK 0x08
#define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK 0x04
#define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK 0x02
#define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK 0x01
#define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK 0x0f
/* Common regulator mode register layout */
#define SPMI_COMMON_MODE_HPM_MASK 0x80
#define SPMI_COMMON_MODE_AUTO_MASK 0x40
#define SPMI_COMMON_MODE_BYPASS_MASK 0x20
#define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK 0x10
#define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK 0x08
#define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK 0x04
#define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK 0x02
#define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01
#define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f
/* Common regulator pull down control register layout */
#define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80
/* LDO regulator current limit control register layout */
#define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK 0x80
/* LDO regulator soft start control register layout */
#define SPMI_LDO_SOFT_START_ENABLE_MASK 0x80
/* VS regulator over current protection control register layout */
#define SPMI_VS_OCP_OVERRIDE 0x01
#define SPMI_VS_OCP_NO_OVERRIDE 0x00
/* VS regulator soft start control register layout */
#define SPMI_VS_SOFT_START_ENABLE_MASK 0x80
#define SPMI_VS_SOFT_START_SEL_MASK 0x03
/* Boost regulator current limit control register layout */
#define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK 0x80
#define SPMI_BOOST_CURRENT_LIMIT_MASK 0x07
#define SPMI_VS_OCP_DEFAULT_MAX_RETRIES 10
#define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS 30
#define SPMI_VS_OCP_FALL_DELAY_US 90
#define SPMI_VS_OCP_FAULT_DELAY_US 20000
#define SPMI_FTSMPS_STEP_CTRL_STEP_MASK 0x18
#define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT 3
#define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK 0x07
#define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT 0
/* Clock rate in kHz of the FTSMPS regulator reference clock. */
#define SPMI_FTSMPS_CLOCK_RATE 19200
/* Minimum voltage stepper delay for each step. */
#define SPMI_FTSMPS_STEP_DELAY 8
#define SPMI_DEFAULT_STEP_DELAY 20
/*
* The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to
* adjust the step rate in order to account for oscillator variance.
*/
#define SPMI_FTSMPS_STEP_MARGIN_NUM 4
#define SPMI_FTSMPS_STEP_MARGIN_DEN 5
/* VSET value to decide the range of ULT SMPS */
#define ULT_SMPS_RANGE_SPLIT 0x60
/**
* struct spmi_voltage_range - regulator set point voltage mapping description
* @min_uV: Minimum programmable output voltage resulting from
* set point register value 0x00
* @max_uV: Maximum programmable output voltage
* @step_uV: Output voltage increase resulting from the set point
* register value increasing by 1
* @set_point_min_uV: Minimum allowed voltage
* @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order
* to pick which range should be used in the case of
* overlapping set points.
* @n_voltages: Number of preferred voltage set points present in this
* range
* @range_sel: Voltage range register value corresponding to this range
*
* The following relationships must be true for the values used in this struct:
* (max_uV - min_uV) % step_uV == 0
* (set_point_min_uV - min_uV) % step_uV == 0*
* (set_point_max_uV - min_uV) % step_uV == 0*
* n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1
*
* *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to
* specify that the voltage range has meaning, but is not preferred.
*/
struct spmi_voltage_range {
int min_uV;
int max_uV;
int step_uV;
int set_point_min_uV;
int set_point_max_uV;
unsigned n_voltages;
u8 range_sel;
};
/*
* The ranges specified in the spmi_voltage_set_points struct must be listed
* so that range[i].set_point_max_uV < range[i+1].set_point_min_uV.
*/
struct spmi_voltage_set_points {
struct spmi_voltage_range *range;
int count;
unsigned n_voltages;
};
struct spmi_regulator {
struct regulator_desc desc;
struct device *dev;
struct delayed_work ocp_work;
struct regmap *regmap;
struct spmi_voltage_set_points *set_points;
enum spmi_regulator_logical_type logical_type;
int ocp_irq;
int ocp_count;
int ocp_max_retries;
int ocp_retry_delay_ms;
int hpm_min_load;
int slew_rate;
ktime_t vs_enable_time;
u16 base;
struct list_head node;
};
struct spmi_regulator_mapping {
enum spmi_regulator_type type;
enum spmi_regulator_subtype subtype;
enum spmi_regulator_logical_type logical_type;
u32 revision_min;
u32 revision_max;
struct regulator_ops *ops;
struct spmi_voltage_set_points *set_points;
int hpm_min_load;
};
struct spmi_regulator_data {
const char *name;
u16 base;
const char *supply;
const char *ocp;
u16 force_type;
};
#define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \
_logical_type, _ops_val, _set_points_val, _hpm_min_load) \
{ \
.type = SPMI_REGULATOR_TYPE_##_type, \
.subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
.revision_min = _dig_major_min, \
.revision_max = _dig_major_max, \
.logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \
.ops = &spmi_##_ops_val##_ops, \
.set_points = &_set_points_val##_set_points, \
.hpm_min_load = _hpm_min_load, \
}
#define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \
{ \
.type = SPMI_REGULATOR_TYPE_VS, \
.subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
.revision_min = _dig_major_min, \
.revision_max = _dig_major_max, \
.logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \
.ops = &spmi_vs_ops, \
}
#define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \
_set_point_max_uV, _max_uV, _step_uV) \
{ \
.min_uV = _min_uV, \
.max_uV = _max_uV, \
.set_point_min_uV = _set_point_min_uV, \
.set_point_max_uV = _set_point_max_uV, \
.step_uV = _step_uV, \
.range_sel = _range_sel, \
}
#define DEFINE_SPMI_SET_POINTS(name) \
struct spmi_voltage_set_points name##_set_points = { \
.range = name##_ranges, \
.count = ARRAY_SIZE(name##_ranges), \
}
/*
* These tables contain the physically available PMIC regulator voltage setpoint
* ranges. Where two ranges overlap in hardware, one of the ranges is trimmed
* to ensure that the setpoints available to software are monotonically
* increasing and unique. The set_voltage callback functions expect these
* properties to hold.
*/
static struct spmi_voltage_range pldo_ranges[] = {
SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000),
SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000),
};
static struct spmi_voltage_range nldo1_ranges[] = {
SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
};
static struct spmi_voltage_range nldo2_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500),
SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250),
SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500),
};
static struct spmi_voltage_range nldo3_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500),
SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500),
};
static struct spmi_voltage_range ln_ldo_ranges[] = {
SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000),
SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000),
};
static struct spmi_voltage_range smps_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000),
};
static struct spmi_voltage_range ftsmps_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000),
SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000),
};
static struct spmi_voltage_range ftsmps2p5_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000),
SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000),
};
static struct spmi_voltage_range boost_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000),
};
static struct spmi_voltage_range boost_byp_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000),
};
static struct spmi_voltage_range ult_lo_smps_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000),
};
static struct spmi_voltage_range ult_ho_smps_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000),
};
static struct spmi_voltage_range ult_nldo_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
};
static struct spmi_voltage_range ult_pldo_ranges[] = {
SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500),
};
static DEFINE_SPMI_SET_POINTS(pldo);
static DEFINE_SPMI_SET_POINTS(nldo1);
static DEFINE_SPMI_SET_POINTS(nldo2);
static DEFINE_SPMI_SET_POINTS(nldo3);
static DEFINE_SPMI_SET_POINTS(ln_ldo);
static DEFINE_SPMI_SET_POINTS(smps);
static DEFINE_SPMI_SET_POINTS(ftsmps);
static DEFINE_SPMI_SET_POINTS(ftsmps2p5);
static DEFINE_SPMI_SET_POINTS(boost);
static DEFINE_SPMI_SET_POINTS(boost_byp);
static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
static DEFINE_SPMI_SET_POINTS(ult_ho_smps);
static DEFINE_SPMI_SET_POINTS(ult_nldo);
static DEFINE_SPMI_SET_POINTS(ult_pldo);
static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf,
int len)
{
return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len);
}
static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr,
u8 *buf, int len)
{
return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len);
}
static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val,
u8 mask)
{
return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val);
}
static int spmi_regulator_vs_enable(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
if (vreg->ocp_irq) {
vreg->ocp_count = 0;
vreg->vs_enable_time = ktime_get();
}
return regulator_enable_regmap(rdev);
}
static int spmi_regulator_vs_ocp(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 reg = SPMI_VS_OCP_OVERRIDE;
return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, &reg, 1);
}
static int spmi_regulator_select_voltage(struct spmi_regulator *vreg,
int min_uV, int max_uV)
{
const struct spmi_voltage_range *range;
int uV = min_uV;
int lim_min_uV, lim_max_uV, i, range_id, range_max_uV;
int selector, voltage_sel;
/* Check if request voltage is outside of physically settable range. */
lim_min_uV = vreg->set_points->range[0].set_point_min_uV;
lim_max_uV =
vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV;
if (uV < lim_min_uV && max_uV >= lim_min_uV)
uV = lim_min_uV;
if (uV < lim_min_uV || uV > lim_max_uV) {
dev_err(vreg->dev,
"request v=[%d, %d] is outside possible v=[%d, %d]\n",
min_uV, max_uV, lim_min_uV, lim_max_uV);
return -EINVAL;
}
/* Find the range which uV is inside of. */
for (i = vreg->set_points->count - 1; i > 0; i--) {
range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV;
if (uV > range_max_uV && range_max_uV > 0)
break;
}
range_id = i;
range = &vreg->set_points->range[range_id];
/*
* Force uV to be an allowed set point by applying a ceiling function to
* the uV value.
*/
voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
uV = voltage_sel * range->step_uV + range->min_uV;
if (uV > max_uV) {
dev_err(vreg->dev,
"request v=[%d, %d] cannot be met by any set point; "
"next set point: %d\n",
min_uV, max_uV, uV);
return -EINVAL;
}
selector = 0;
for (i = 0; i < range_id; i++)
selector += vreg->set_points->range[i].n_voltages;
selector += (uV - range->set_point_min_uV) / range->step_uV;
return selector;
}
static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg,
unsigned selector, u8 *range_sel,
u8 *voltage_sel)
{
const struct spmi_voltage_range *range, *end;
unsigned offset;
range = vreg->set_points->range;
end = range + vreg->set_points->count;
for (; range < end; range++) {
if (selector < range->n_voltages) {
/*
* hardware selectors between set point min and real
* min are invalid so we ignore them
*/
offset = range->set_point_min_uV - range->min_uV;
offset /= range->step_uV;
*voltage_sel = selector + offset;
*range_sel = range->range_sel;
return 0;
}
selector -= range->n_voltages;
}
return -EINVAL;
}
static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel,
const struct spmi_voltage_range *range)
{
unsigned sw_sel = 0;
unsigned offset, max_hw_sel;
const struct spmi_voltage_range *r = vreg->set_points->range;
const struct spmi_voltage_range *end = r + vreg->set_points->count;
for (; r < end; r++) {
if (r == range && range->n_voltages) {
/*
* hardware selectors between set point min and real
* min and between set point max and real max are
* invalid so we return an error if they're
* programmed into the hardware
*/
offset = range->set_point_min_uV - range->min_uV;
offset /= range->step_uV;
if (hw_sel < offset)
return -EINVAL;
max_hw_sel = range->set_point_max_uV - range->min_uV;
max_hw_sel /= range->step_uV;
if (hw_sel > max_hw_sel)
return -EINVAL;
return sw_sel + hw_sel - offset;
}
sw_sel += r->n_voltages;
}
return -EINVAL;
}
static const struct spmi_voltage_range *
spmi_regulator_find_range(struct spmi_regulator *vreg)
{
u8 range_sel;
const struct spmi_voltage_range *range, *end;
range = vreg->set_points->range;
end = range + vreg->set_points->count;
spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1);
for (; range < end; range++)
if (range->range_sel == range_sel)
return range;
return NULL;
}
static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg,
int min_uV, int max_uV)
{
const struct spmi_voltage_range *range;
int uV = min_uV;
int i, selector;
range = spmi_regulator_find_range(vreg);
if (!range)
goto different_range;
if (uV < range->min_uV && max_uV >= range->min_uV)
uV = range->min_uV;
if (uV < range->min_uV || uV > range->max_uV) {
/* Current range doesn't support the requested voltage. */
goto different_range;
}
/*
* Force uV to be an allowed set point by applying a ceiling function to
* the uV value.
*/
uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
uV = uV * range->step_uV + range->min_uV;
if (uV > max_uV) {
/*
* No set point in the current voltage range is within the
* requested min_uV to max_uV range.
*/
goto different_range;
}
selector = 0;
for (i = 0; i < vreg->set_points->count; i++) {
if (uV >= vreg->set_points->range[i].set_point_min_uV
&& uV <= vreg->set_points->range[i].set_point_max_uV) {
selector +=
(uV - vreg->set_points->range[i].set_point_min_uV)
/ vreg->set_points->range[i].step_uV;
break;
}
selector += vreg->set_points->range[i].n_voltages;
}
if (selector >= vreg->set_points->n_voltages)
goto different_range;
return selector;
different_range:
return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
}
static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
/*
* Favor staying in the current voltage range if possible. This avoids
* voltage spikes that occur when changing the voltage range.
*/
return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV);
}
static int
spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
int ret;
u8 buf[2];
u8 range_sel, voltage_sel;
ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
if (ret)
return ret;
buf[0] = range_sel;
buf[1] = voltage_sel;
return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2);
}
static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_selector, unsigned int new_selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
const struct spmi_voltage_range *range;
int diff_uV;
range = spmi_regulator_find_range(vreg);
if (!range)
return -EINVAL;
diff_uV = abs(new_selector - old_selector) * range->step_uV;
return DIV_ROUND_UP(diff_uV, vreg->slew_rate);
}
static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
const struct spmi_voltage_range *range;
u8 voltage_sel;
spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
range = spmi_regulator_find_range(vreg);
if (!range)
return -EINVAL;
return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
}
static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
}
static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev,
unsigned selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 sel = selector;
/*
* Certain types of regulators do not have a range select register so
* only voltage set register needs to be written.
*/
return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1);
}
static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 selector;
int ret;
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1);
if (ret)
return ret;
return selector;
}
static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev,
unsigned selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
int ret;
u8 range_sel, voltage_sel;
ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
if (ret)
return ret;
/*
* Calculate VSET based on range
* In case of range 0: voltage_sel is a 7 bit value, can be written
* witout any modification.
* In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to
* [011].
*/
if (range_sel == 1)
voltage_sel |= ULT_SMPS_RANGE_SPLIT;
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET,
voltage_sel, 0xff);
}
static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
const struct spmi_voltage_range *range;
u8 voltage_sel;
spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
range = spmi_regulator_find_range(vreg);
if (!range)
return -EINVAL;
if (range->range_sel == 1)
voltage_sel &= ~ULT_SMPS_RANGE_SPLIT;
return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
}
static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
unsigned selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
int uV = 0;
int i;
if (selector >= vreg->set_points->n_voltages)
return 0;
for (i = 0; i < vreg->set_points->count; i++) {
if (selector < vreg->set_points->range[i].n_voltages) {
uV = selector * vreg->set_points->range[i].step_uV
+ vreg->set_points->range[i].set_point_min_uV;
break;
}
selector -= vreg->set_points->range[i].n_voltages;
}
return uV;
}
static int
spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 mask = SPMI_COMMON_MODE_BYPASS_MASK;
u8 val = 0;
if (enable)
val = mask;
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
}
static int
spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 val;
int ret;
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1);
*enable = val & SPMI_COMMON_MODE_BYPASS_MASK;
return ret;
}
static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 reg;
spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
if (reg & SPMI_COMMON_MODE_HPM_MASK)
return REGULATOR_MODE_NORMAL;
if (reg & SPMI_COMMON_MODE_AUTO_MASK)
return REGULATOR_MODE_FAST;
return REGULATOR_MODE_IDLE;
}
static int
spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
u8 val = 0;
if (mode == REGULATOR_MODE_NORMAL)
val = SPMI_COMMON_MODE_HPM_MASK;
else if (mode == REGULATOR_MODE_FAST)
val = SPMI_COMMON_MODE_AUTO_MASK;
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
}
static int
spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
unsigned int mode;
if (load_uA >= vreg->hpm_min_load)
mode = REGULATOR_MODE_NORMAL;
else
mode = REGULATOR_MODE_IDLE;
return spmi_regulator_common_set_mode(rdev, mode);
}
static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK;
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN,
mask, mask);
}
static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK;
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START,
mask, mask);
}
static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
enum spmi_regulator_logical_type type = vreg->logical_type;
unsigned int current_reg;
u8 reg;
u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK |
SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500;
if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST)
current_reg = SPMI_BOOST_REG_CURRENT_LIMIT;
else
current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT;
if (ilim_uA > max || ilim_uA <= 0)
return -EINVAL;
reg = (ilim_uA - 1) / 500;
reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
return spmi_vreg_update_bits(vreg, current_reg, reg, mask);
}
static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg)
{
int ret;
ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK);
vreg->vs_enable_time = ktime_get();
ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK);
return ret;
}
static void spmi_regulator_vs_ocp_work(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct spmi_regulator *vreg
= container_of(dwork, struct spmi_regulator, ocp_work);
spmi_regulator_vs_clear_ocp(vreg);
}
static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data)
{
struct spmi_regulator *vreg = data;
ktime_t ocp_irq_time;
s64 ocp_trigger_delay_us;
ocp_irq_time = ktime_get();
ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time,
vreg->vs_enable_time);
/*
* Reset the OCP count if there is a large delay between switch enable
* and when OCP triggers. This is indicative of a hotplug event as
* opposed to a fault.
*/
if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US)
vreg->ocp_count = 0;
/* Wait for switch output to settle back to 0 V after OCP triggered. */
udelay(SPMI_VS_OCP_FALL_DELAY_US);
vreg->ocp_count++;
if (vreg->ocp_count == 1) {
/* Immediately clear the over current condition. */
spmi_regulator_vs_clear_ocp(vreg);
} else if (vreg->ocp_count <= vreg->ocp_max_retries) {
/* Schedule the over current clear task to run later. */
schedule_delayed_work(&vreg->ocp_work,
msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1);
} else {
dev_err(vreg->dev,
"OCP triggered %d times; no further retries\n",
vreg->ocp_count);
}
return IRQ_HANDLED;
}
#define SAW3_VCTL_DATA_MASK 0xFF
#define SAW3_VCTL_CLEAR_MASK 0x700FF
#define SAW3_AVS_CTL_EN_MASK 0x1
#define SAW3_AVS_CTL_TGGL_MASK 0x8000000
#define SAW3_AVS_CTL_CLEAR_MASK 0x7efc00
static struct regmap *saw_regmap = NULL;
static void spmi_saw_set_vdd(void *data)
{
u32 vctl, data3, avs_ctl, pmic_sts;
bool avs_enabled = false;
unsigned long timeout;
u8 voltage_sel = *(u8 *)data;
regmap_read(saw_regmap, SAW3_AVS_CTL, &avs_ctl);
regmap_read(saw_regmap, SAW3_VCTL, &vctl);
regmap_read(saw_regmap, SAW3_SPM_PMIC_DATA_3, &data3);
/* select the band */
vctl &= ~SAW3_VCTL_CLEAR_MASK;
vctl |= (u32)voltage_sel;
data3 &= ~SAW3_VCTL_CLEAR_MASK;
data3 |= (u32)voltage_sel;
/* If AVS is enabled, switch it off during the voltage change */
avs_enabled = SAW3_AVS_CTL_EN_MASK & avs_ctl;
if (avs_enabled) {
avs_ctl &= ~SAW3_AVS_CTL_TGGL_MASK;
regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
}
regmap_write(saw_regmap, SAW3_RST, 1);
regmap_write(saw_regmap, SAW3_VCTL, vctl);
regmap_write(saw_regmap, SAW3_SPM_PMIC_DATA_3, data3);
timeout = jiffies + usecs_to_jiffies(100);
do {
regmap_read(saw_regmap, SAW3_PMIC_STS, &pmic_sts);
pmic_sts &= SAW3_VCTL_DATA_MASK;
if (pmic_sts == (u32)voltage_sel)
break;
cpu_relax();
} while (time_before(jiffies, timeout));
/* After successful voltage change, switch the AVS back on */
if (avs_enabled) {
pmic_sts &= 0x3f;
avs_ctl &= ~SAW3_AVS_CTL_CLEAR_MASK;
avs_ctl |= ((pmic_sts - 4) << 10);
avs_ctl |= (pmic_sts << 17);
avs_ctl |= SAW3_AVS_CTL_TGGL_MASK;
regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
}
}
static int
spmi_regulator_saw_set_voltage(struct regulator_dev *rdev, unsigned selector)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
int ret;
u8 range_sel, voltage_sel;
ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
if (ret)
return ret;
if (0 != range_sel) {
dev_dbg(&rdev->dev, "range_sel = %02X voltage_sel = %02X", \
range_sel, voltage_sel);
return -EINVAL;
}
/* Always do the SAW register writes on the first CPU */
return smp_call_function_single(0, spmi_saw_set_vdd, \
&voltage_sel, true);
}
static struct regulator_ops spmi_saw_ops = {};
static struct regulator_ops spmi_smps_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_common_set_voltage,
.set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
.get_voltage_sel = spmi_regulator_common_get_voltage,
.map_voltage = spmi_regulator_common_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
.set_load = spmi_regulator_common_set_load,
.set_pull_down = spmi_regulator_common_set_pull_down,
};
static struct regulator_ops spmi_ldo_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_common_set_voltage,
.get_voltage_sel = spmi_regulator_common_get_voltage,
.map_voltage = spmi_regulator_common_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
.set_load = spmi_regulator_common_set_load,
.set_bypass = spmi_regulator_common_set_bypass,
.get_bypass = spmi_regulator_common_get_bypass,
.set_pull_down = spmi_regulator_common_set_pull_down,
.set_soft_start = spmi_regulator_common_set_soft_start,
};
static struct regulator_ops spmi_ln_ldo_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_common_set_voltage,
.get_voltage_sel = spmi_regulator_common_get_voltage,
.map_voltage = spmi_regulator_common_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_bypass = spmi_regulator_common_set_bypass,
.get_bypass = spmi_regulator_common_get_bypass,
};
static struct regulator_ops spmi_vs_ops = {
.enable = spmi_regulator_vs_enable,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_pull_down = spmi_regulator_common_set_pull_down,
.set_soft_start = spmi_regulator_common_set_soft_start,
.set_over_current_protection = spmi_regulator_vs_ocp,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
};
static struct regulator_ops spmi_boost_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_single_range_set_voltage,
.get_voltage_sel = spmi_regulator_single_range_get_voltage,
.map_voltage = spmi_regulator_single_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_input_current_limit = spmi_regulator_set_ilim,
};
static struct regulator_ops spmi_ftsmps_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_common_set_voltage,
.set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
.get_voltage_sel = spmi_regulator_common_get_voltage,
.map_voltage = spmi_regulator_common_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
.set_load = spmi_regulator_common_set_load,
.set_pull_down = spmi_regulator_common_set_pull_down,
};
static struct regulator_ops spmi_ult_lo_smps_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage,
.set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
.get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
.set_load = spmi_regulator_common_set_load,
.set_pull_down = spmi_regulator_common_set_pull_down,
};
static struct regulator_ops spmi_ult_ho_smps_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_single_range_set_voltage,
.set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
.get_voltage_sel = spmi_regulator_single_range_get_voltage,
.map_voltage = spmi_regulator_single_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
.set_load = spmi_regulator_common_set_load,
.set_pull_down = spmi_regulator_common_set_pull_down,
};
static struct regulator_ops spmi_ult_ldo_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = spmi_regulator_single_range_set_voltage,
.get_voltage_sel = spmi_regulator_single_range_get_voltage,
.map_voltage = spmi_regulator_single_map_voltage,
.list_voltage = spmi_regulator_common_list_voltage,
.set_mode = spmi_regulator_common_set_mode,
.get_mode = spmi_regulator_common_get_mode,
.set_load = spmi_regulator_common_set_load,
.set_bypass = spmi_regulator_common_set_bypass,
.get_bypass = spmi_regulator_common_get_bypass,
.set_pull_down = spmi_regulator_common_set_pull_down,
.set_soft_start = spmi_regulator_common_set_soft_start,
};
/* Maximum possible digital major revision value */
#define INF 0xFF
static const struct spmi_regulator_mapping supported_regulators[] = {
/* type subtype dig_min dig_max ltype ops setpoints hpm_min */
SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000),
SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000),
SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000),
SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000),
SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000),
SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000),
SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000),
SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000),
SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000),
SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000),
SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000),
SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0),
SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000),
SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000),
SPMI_VREG_VS(LV100, 0, INF),
SPMI_VREG_VS(LV300, 0, INF),
SPMI_VREG_VS(MV300, 0, INF),
SPMI_VREG_VS(MV500, 0, INF),
SPMI_VREG_VS(HDMI, 0, INF),
SPMI_VREG_VS(OTG, 0, INF),
SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0),
SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000),
SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000),
SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps,
ult_lo_smps, 100000),
SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps,
ult_lo_smps, 100000),
SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps,
ult_lo_smps, 100000),
SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps,
ult_ho_smps, 100000),
SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000),
};
static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points)
{
unsigned int n;
struct spmi_voltage_range *range = points->range;
for (; range < points->range + points->count; range++) {
n = 0;
if (range->set_point_max_uV) {
n = range->set_point_max_uV - range->set_point_min_uV;
n = (n / range->step_uV) + 1;
}
range->n_voltages = n;
points->n_voltages += n;
}
}
static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type)
{
const struct spmi_regulator_mapping *mapping;
int ret, i;
u32 dig_major_rev;
u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1];
u8 type, subtype;
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
ARRAY_SIZE(version));
if (ret) {
dev_dbg(vreg->dev, "could not read version registers\n");
return ret;
}
dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV
- SPMI_COMMON_REG_DIG_MAJOR_REV];
if (!force_type) {
type = version[SPMI_COMMON_REG_TYPE -
SPMI_COMMON_REG_DIG_MAJOR_REV];
subtype = version[SPMI_COMMON_REG_SUBTYPE -
SPMI_COMMON_REG_DIG_MAJOR_REV];
} else {
type = force_type >> 8;
subtype = force_type;
}
for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) {
mapping = &supported_regulators[i];
if (mapping->type == type && mapping->subtype == subtype
&& mapping->revision_min <= dig_major_rev
&& mapping->revision_max >= dig_major_rev)
goto found;
}
dev_err(vreg->dev,
"unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n",
vreg->desc.name, type, subtype, dig_major_rev);
return -ENODEV;
found:
vreg->logical_type = mapping->logical_type;
vreg->set_points = mapping->set_points;
vreg->hpm_min_load = mapping->hpm_min_load;
vreg->desc.ops = mapping->ops;
if (mapping->set_points) {
if (!mapping->set_points->n_voltages)
spmi_calculate_num_voltages(mapping->set_points);
vreg->desc.n_voltages = mapping->set_points->n_voltages;
}
return 0;
}
static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg)
{
int ret;
u8 reg = 0;
int step, delay, slew_rate, step_delay;
const struct spmi_voltage_range *range;
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
if (ret) {
dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
return ret;
}
range = spmi_regulator_find_range(vreg);
if (!range)
return -EINVAL;
switch (vreg->logical_type) {
case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
step_delay = SPMI_FTSMPS_STEP_DELAY;
break;
default:
step_delay = SPMI_DEFAULT_STEP_DELAY;
break;
}
step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK;
step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT;
delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK;
delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT;
/* slew_rate has units of uV/us */
slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step);
slew_rate /= 1000 * (step_delay << delay);
slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM;
slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN;
/* Ensure that the slew rate is greater than 0 */
vreg->slew_rate = max(slew_rate, 1);
return ret;
}
static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
const struct spmi_regulator_init_data *data)
{
int ret;
enum spmi_regulator_logical_type type;
u8 ctrl_reg[8], reg, mask;
type = vreg->logical_type;
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
if (ret)
return ret;
/* Set up enable pin control. */
if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_LDO
|| type == SPMI_REGULATOR_LOGICAL_TYPE_VS)
&& !(data->pin_ctrl_enable
& SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_ENABLE] &=
~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
ctrl_reg[SPMI_COMMON_IDX_ENABLE] |=
data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
}
/* Set up mode pin control. */
if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_LDO)
&& !(data->pin_ctrl_hpm
& SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_MODE] &=
~SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
ctrl_reg[SPMI_COMMON_IDX_MODE] |=
data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
}
if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS
&& !(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_MODE] &=
~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
ctrl_reg[SPMI_COMMON_IDX_MODE] |=
data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
}
if ((type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO)
&& !(data->pin_ctrl_hpm
& SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_MODE] &=
~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
ctrl_reg[SPMI_COMMON_IDX_MODE] |=
data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
}
/* Write back any control register values that were modified. */
ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
if (ret)
return ret;
/* Set soft start strength and over current protection for VS. */
if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) {
if (data->vs_soft_start_strength
!= SPMI_VS_SOFT_START_STR_HW_DEFAULT) {
reg = data->vs_soft_start_strength
& SPMI_VS_SOFT_START_SEL_MASK;
mask = SPMI_VS_SOFT_START_SEL_MASK;
return spmi_vreg_update_bits(vreg,
SPMI_VS_REG_SOFT_START,
reg, mask);
}
}
return 0;
}
static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg,
struct device_node *node, struct spmi_regulator_init_data *data)
{
/*
* Initialize configuration parameters to use hardware default in case
* no value is specified via device tree.
*/
data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;
data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;
data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT;
/* These bindings are optional, so it is okay if they aren't found. */
of_property_read_u32(node, "qcom,ocp-max-retries",
&vreg->ocp_max_retries);
of_property_read_u32(node, "qcom,ocp-retry-delay",
&vreg->ocp_retry_delay_ms);
of_property_read_u32(node, "qcom,pin-ctrl-enable",
&data->pin_ctrl_enable);
of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);
of_property_read_u32(node, "qcom,vs-soft-start-strength",
&data->vs_soft_start_strength);
}
static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
{
if (mode == 1)
return REGULATOR_MODE_NORMAL;
if (mode == 2)
return REGULATOR_MODE_FAST;
return REGULATOR_MODE_IDLE;
}
static int spmi_regulator_of_parse(struct device_node *node,
const struct regulator_desc *desc,
struct regulator_config *config)
{
struct spmi_regulator_init_data data = { };
struct spmi_regulator *vreg = config->driver_data;
struct device *dev = config->dev;
int ret;
spmi_regulator_get_dt_config(vreg, node, &data);
if (!vreg->ocp_max_retries)
vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
if (!vreg->ocp_retry_delay_ms)
vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
ret = spmi_regulator_init_registers(vreg, &data);
if (ret) {
dev_err(dev, "common initialization failed, ret=%d\n", ret);
return ret;
}
switch (vreg->logical_type) {
case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
ret = spmi_regulator_init_slew_rate(vreg);
if (ret)
return ret;
default:
break;
}
if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS)
vreg->ocp_irq = 0;
if (vreg->ocp_irq) {
ret = devm_request_irq(dev, vreg->ocp_irq,
spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp",
vreg);
if (ret < 0) {
dev_err(dev, "failed to request irq %d, ret=%d\n",
vreg->ocp_irq, ret);
return ret;
}
INIT_DELAYED_WORK(&vreg->ocp_work, spmi_regulator_vs_ocp_work);
}
return 0;
}
static const struct spmi_regulator_data pm8941_regulators[] = {
{ "s1", 0x1400, "vdd_s1", },
{ "s2", 0x1700, "vdd_s2", },
{ "s3", 0x1a00, "vdd_s3", },
{ "s4", 0xa000, },
{ "l1", 0x4000, "vdd_l1_l3", },
{ "l2", 0x4100, "vdd_l2_lvs_1_2_3", },
{ "l3", 0x4200, "vdd_l1_l3", },
{ "l4", 0x4300, "vdd_l4_l11", },
{ "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 },
{ "l6", 0x4500, "vdd_l6_l12_l14_l15", },
{ "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 },
{ "l8", 0x4700, "vdd_l8_l16_l18_19", },
{ "l9", 0x4800, "vdd_l9_l10_l17_l22", },
{ "l10", 0x4900, "vdd_l9_l10_l17_l22", },
{ "l11", 0x4a00, "vdd_l4_l11", },
{ "l12", 0x4b00, "vdd_l6_l12_l14_l15", },
{ "l13", 0x4c00, "vdd_l13_l20_l23_l24", },
{ "l14", 0x4d00, "vdd_l6_l12_l14_l15", },
{ "l15", 0x4e00, "vdd_l6_l12_l14_l15", },
{ "l16", 0x4f00, "vdd_l8_l16_l18_19", },
{ "l17", 0x5000, "vdd_l9_l10_l17_l22", },
{ "l18", 0x5100, "vdd_l8_l16_l18_19", },
{ "l19", 0x5200, "vdd_l8_l16_l18_19", },
{ "l20", 0x5300, "vdd_l13_l20_l23_l24", },
{ "l21", 0x5400, "vdd_l21", },
{ "l22", 0x5500, "vdd_l9_l10_l17_l22", },
{ "l23", 0x5600, "vdd_l13_l20_l23_l24", },
{ "l24", 0x5700, "vdd_l13_l20_l23_l24", },
{ "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", },
{ "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", },
{ "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", },
{ "5vs1", 0x8300, "vin_5vs", "ocp-5vs1", },
{ "5vs2", 0x8400, "vin_5vs", "ocp-5vs2", },
{ }
};
static const struct spmi_regulator_data pm8841_regulators[] = {
{ "s1", 0x1400, "vdd_s1", },
{ "s2", 0x1700, "vdd_s2", NULL, 0x1c08 },
{ "s3", 0x1a00, "vdd_s3", },
{ "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 },
{ "s5", 0x2000, "vdd_s5", NULL, 0x1c08 },
{ "s6", 0x2300, "vdd_s6", NULL, 0x1c08 },
{ "s7", 0x2600, "vdd_s7", NULL, 0x1c08 },
{ "s8", 0x2900, "vdd_s8", NULL, 0x1c08 },
{ }
};
static const struct spmi_regulator_data pm8916_regulators[] = {
{ "s1", 0x1400, "vdd_s1", },
{ "s2", 0x1700, "vdd_s2", },
{ "s3", 0x1a00, "vdd_s3", },
{ "s4", 0x1d00, "vdd_s4", },
{ "l1", 0x4000, "vdd_l1_l3", },
{ "l2", 0x4100, "vdd_l2", },
{ "l3", 0x4200, "vdd_l1_l3", },
{ "l4", 0x4300, "vdd_l4_l5_l6", },
{ "l5", 0x4400, "vdd_l4_l5_l6", },
{ "l6", 0x4500, "vdd_l4_l5_l6", },
{ "l7", 0x4600, "vdd_l7", },
{ "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", },
{ "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", },
{ "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", },
{ "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", },
{ "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", },
{ "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", },
{ "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", },
{ "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", },
{ "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", },
{ "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", },
{ "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", },
{ }
};
static const struct spmi_regulator_data pm8994_regulators[] = {
{ "s1", 0x1400, "vdd_s1", },
{ "s2", 0x1700, "vdd_s2", },
{ "s3", 0x1a00, "vdd_s3", },
{ "s4", 0x1d00, "vdd_s4", },
{ "s5", 0x2000, "vdd_s5", },
{ "s6", 0x2300, "vdd_s6", },
{ "s7", 0x2600, "vdd_s7", },
{ "s8", 0x2900, "vdd_s8", },
{ "s9", 0x2c00, "vdd_s9", },
{ "s10", 0x2f00, "vdd_s10", },
{ "s11", 0x3200, "vdd_s11", },
{ "s12", 0x3500, "vdd_s12", },
{ "l1", 0x4000, "vdd_l1", },
{ "l2", 0x4100, "vdd_l2_l26_l28", },
{ "l3", 0x4200, "vdd_l3_l11", },
{ "l4", 0x4300, "vdd_l4_l27_l31", },
{ "l5", 0x4400, "vdd_l5_l7", },
{ "l6", 0x4500, "vdd_l6_l12_l32", },
{ "l7", 0x4600, "vdd_l5_l7", },
{ "l8", 0x4700, "vdd_l8_l16_l30", },
{ "l9", 0x4800, "vdd_l9_l10_l18_l22", },
{ "l10", 0x4900, "vdd_l9_l10_l18_l22", },
{ "l11", 0x4a00, "vdd_l3_l11", },
{ "l12", 0x4b00, "vdd_l6_l12_l32", },
{ "l13", 0x4c00, "vdd_l13_l19_l23_l24", },
{ "l14", 0x4d00, "vdd_l14_l15", },
{ "l15", 0x4e00, "vdd_l14_l15", },
{ "l16", 0x4f00, "vdd_l8_l16_l30", },
{ "l17", 0x5000, "vdd_l17_l29", },
{ "l18", 0x5100, "vdd_l9_l10_l18_l22", },
{ "l19", 0x5200, "vdd_l13_l19_l23_l24", },
{ "l20", 0x5300, "vdd_l20_l21", },
{ "l21", 0x5400, "vdd_l20_l21", },
{ "l22", 0x5500, "vdd_l9_l10_l18_l22", },
{ "l23", 0x5600, "vdd_l13_l19_l23_l24", },
{ "l24", 0x5700, "vdd_l13_l19_l23_l24", },
{ "l25", 0x5800, "vdd_l25", },
{ "l26", 0x5900, "vdd_l2_l26_l28", },
{ "l27", 0x5a00, "vdd_l4_l27_l31", },
{ "l28", 0x5b00, "vdd_l2_l26_l28", },
{ "l29", 0x5c00, "vdd_l17_l29", },
{ "l30", 0x5d00, "vdd_l8_l16_l30", },
{ "l31", 0x5e00, "vdd_l4_l27_l31", },
{ "l32", 0x5f00, "vdd_l6_l12_l32", },
{ "lvs1", 0x8000, "vdd_lvs_1_2", },
{ "lvs2", 0x8100, "vdd_lvs_1_2", },
{ }
};
static const struct spmi_regulator_data pmi8994_regulators[] = {
{ "s1", 0x1400, "vdd_s1", },
{ "s2", 0x1700, "vdd_s2", },
{ "s3", 0x1a00, "vdd_s3", },
{ "l1", 0x4000, "vdd_l1", },
{ }
};
static const struct of_device_id qcom_spmi_regulator_match[] = {
{ .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
{ .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
{ .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
{ .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
{ .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
{ }
};
MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
static int qcom_spmi_regulator_probe(struct platform_device *pdev)
{
const struct spmi_regulator_data *reg;
const struct of_device_id *match;
struct regulator_config config = { };
struct regulator_dev *rdev;
struct spmi_regulator *vreg;
struct regmap *regmap;
const char *name;
struct device *dev = &pdev->dev;
struct device_node *node = pdev->dev.of_node;
struct device_node *syscon;
int ret, lenp;
struct list_head *vreg_list;
vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL);
if (!vreg_list)
return -ENOMEM;
INIT_LIST_HEAD(vreg_list);
platform_set_drvdata(pdev, vreg_list);
regmap = dev_get_regmap(dev->parent, NULL);
if (!regmap)
return -ENODEV;
match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);
if (!match)
return -ENODEV;
if (of_find_property(node, "qcom,saw-reg", &lenp)) {
syscon = of_parse_phandle(node, "qcom,saw-reg", 0);
saw_regmap = syscon_node_to_regmap(syscon);
of_node_put(syscon);
if (IS_ERR(regmap))
dev_err(dev, "ERROR reading SAW regmap\n");
}
for (reg = match->data; reg->name; reg++) {
if (saw_regmap && \
of_find_property(of_find_node_by_name(node, reg->name), \
"qcom,saw-slave", &lenp)) {
continue;
}
vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
if (!vreg)
return -ENOMEM;
vreg->dev = dev;
vreg->base = reg->base;
vreg->regmap = regmap;
if (reg->ocp) {
vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);
if (vreg->ocp_irq < 0) {
ret = vreg->ocp_irq;
goto err;
}
}
vreg->desc.id = -1;
vreg->desc.owner = THIS_MODULE;
vreg->desc.type = REGULATOR_VOLTAGE;
vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE;
vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK;
vreg->desc.enable_val = SPMI_COMMON_ENABLE;
vreg->desc.name = name = reg->name;
vreg->desc.supply_name = reg->supply;
vreg->desc.of_match = reg->name;
vreg->desc.of_parse_cb = spmi_regulator_of_parse;
vreg->desc.of_map_mode = spmi_regulator_of_map_mode;
ret = spmi_regulator_match(vreg, reg->force_type);
if (ret)
continue;
if (saw_regmap && \
of_find_property(of_find_node_by_name(node, reg->name), \
"qcom,saw-leader", &lenp)) {
spmi_saw_ops = *(vreg->desc.ops);
spmi_saw_ops.set_voltage_sel = \
spmi_regulator_saw_set_voltage;
vreg->desc.ops = &spmi_saw_ops;
}
config.dev = dev;
config.driver_data = vreg;
config.regmap = regmap;
rdev = devm_regulator_register(dev, &vreg->desc, &config);
if (IS_ERR(rdev)) {
dev_err(dev, "failed to register %s\n", name);
ret = PTR_ERR(rdev);
goto err;
}
INIT_LIST_HEAD(&vreg->node);
list_add(&vreg->node, vreg_list);
}
return 0;
err:
list_for_each_entry(vreg, vreg_list, node)
if (vreg->ocp_irq)
cancel_delayed_work_sync(&vreg->ocp_work);
return ret;
}
static int qcom_spmi_regulator_remove(struct platform_device *pdev)
{
struct spmi_regulator *vreg;
struct list_head *vreg_list = platform_get_drvdata(pdev);
list_for_each_entry(vreg, vreg_list, node)
if (vreg->ocp_irq)
cancel_delayed_work_sync(&vreg->ocp_work);
return 0;
}
static struct platform_driver qcom_spmi_regulator_driver = {
.driver = {
.name = "qcom-spmi-regulator",
.of_match_table = qcom_spmi_regulator_match,
},
.probe = qcom_spmi_regulator_probe,
.remove = qcom_spmi_regulator_remove,
};
module_platform_driver(qcom_spmi_regulator_driver);
MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:qcom-spmi-regulator");
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