Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-29 14:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity
a12af6f860
linux/drivers/regulator/bd718x7-regulator.c
Matti Vaittinen e7543e1995
regulator: bd718x7: Use rohm generic restricted voltage setting 
Use common restricted voltage setting instead of implementing own.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/5a0ee14852802690241568a29ed19ff9550b0b08.1637233864.git.matti.vaittinen@fi.rohmeurope.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-18 13:57:49 +00:00

1858 lines
54 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 ROHM Semiconductors
// bd71837-regulator.c ROHM BD71837MWV/BD71847MWV regulator driver
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/rohm-bd718x7.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>
/* Typical regulator startup times as per data sheet in uS */
#define BD71847_BUCK1_STARTUP_TIME 144
#define BD71847_BUCK2_STARTUP_TIME 162
#define BD71847_BUCK3_STARTUP_TIME 162
#define BD71847_BUCK4_STARTUP_TIME 240
#define BD71847_BUCK5_STARTUP_TIME 270
#define BD71847_BUCK6_STARTUP_TIME 200
#define BD71847_LDO1_STARTUP_TIME 440
#define BD71847_LDO2_STARTUP_TIME 370
#define BD71847_LDO3_STARTUP_TIME 310
#define BD71847_LDO4_STARTUP_TIME 400
#define BD71847_LDO5_STARTUP_TIME 530
#define BD71847_LDO6_STARTUP_TIME 400
#define BD71837_BUCK1_STARTUP_TIME 160
#define BD71837_BUCK2_STARTUP_TIME 180
#define BD71837_BUCK3_STARTUP_TIME 180
#define BD71837_BUCK4_STARTUP_TIME 180
#define BD71837_BUCK5_STARTUP_TIME 160
#define BD71837_BUCK6_STARTUP_TIME 240
#define BD71837_BUCK7_STARTUP_TIME 220
#define BD71837_BUCK8_STARTUP_TIME 200
#define BD71837_LDO1_STARTUP_TIME 440
#define BD71837_LDO2_STARTUP_TIME 370
#define BD71837_LDO3_STARTUP_TIME 310
#define BD71837_LDO4_STARTUP_TIME 400
#define BD71837_LDO5_STARTUP_TIME 310
#define BD71837_LDO6_STARTUP_TIME 400
#define BD71837_LDO7_STARTUP_TIME 530
/*
* BD718(37/47/50) have two "enable control modes". ON/OFF can either be
* controlled by software - or by PMIC internal HW state machine. Whether
* regulator should be under SW or HW control can be defined from device-tree.
* Let's provide separate ops for regulators to use depending on the "enable
* control mode".
*/
#define BD718XX_HWOPNAME(swopname) swopname##_hwcontrol
#define BD718XX_OPS(name, _list_voltage, _map_voltage, _set_voltage_sel, \
_get_voltage_sel, _set_voltage_time_sel, _set_ramp_delay, \
_set_uvp, _set_ovp) \
static const struct regulator_ops name = { \
.enable = regulator_enable_regmap, \
.disable = regulator_disable_regmap, \
.is_enabled = regulator_is_enabled_regmap, \
.list_voltage = (_list_voltage), \
.map_voltage = (_map_voltage), \
.set_voltage_sel = (_set_voltage_sel), \
.get_voltage_sel = (_get_voltage_sel), \
.set_voltage_time_sel = (_set_voltage_time_sel), \
.set_ramp_delay = (_set_ramp_delay), \
.set_under_voltage_protection = (_set_uvp), \
.set_over_voltage_protection = (_set_ovp), \
}; \
\
static const struct regulator_ops BD718XX_HWOPNAME(name) = { \
.is_enabled = always_enabled_by_hwstate, \
.list_voltage = (_list_voltage), \
.map_voltage = (_map_voltage), \
.set_voltage_sel = (_set_voltage_sel), \
.get_voltage_sel = (_get_voltage_sel), \
.set_voltage_time_sel = (_set_voltage_time_sel), \
.set_ramp_delay = (_set_ramp_delay), \
.set_under_voltage_protection = (_set_uvp), \
.set_over_voltage_protection = (_set_ovp), \
} \
/*
* BUCK1/2/3/4
* BUCK1RAMPRATE[1:0] BUCK1 DVS ramp rate setting
* 00: 10.00mV/usec 10mV 1uS
* 01: 5.00mV/usec 10mV 2uS
* 10: 2.50mV/usec 10mV 4uS
* 11: 1.25mV/usec 10mV 8uS
*/
static const unsigned int bd718xx_ramp_delay[] = { 10000, 5000, 2500, 1250 };
/* These functions are used when regulators are under HW state machine control.
* We assume PMIC is in RUN state because SW running and able to query the
* status. Most of the regulators have fixed ON or OFF state at RUN/IDLE so for
* them we just return a constant. BD71837 BUCK3 and BUCK4 are exceptions as
* they support configuring the ON/OFF state for RUN.
*
* Note for next hacker - these PMICs have a register where the HW state can be
* read. If assuming RUN appears to be false in your use-case - you can
* implement state reading (although that is not going to be atomic) before
* returning the enable state.
*/
static int always_enabled_by_hwstate(struct regulator_dev *rdev)
{
return 1;
}
static int never_enabled_by_hwstate(struct regulator_dev *rdev)
{
return 0;
}
static int bd71837_get_buck34_enable_hwctrl(struct regulator_dev *rdev)
{
int ret;
unsigned int val;
ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
if (ret)
return ret;
return !!(BD718XX_BUCK_RUN_ON & val);
}
static void voltage_change_done(struct regulator_dev *rdev, unsigned int sel,
unsigned int *mask)
{
int ret;
if (*mask) {
/*
* Let's allow scheduling as we use I2C anyways. We just need to
* guarantee minimum of 1ms sleep - it shouldn't matter if we
* exceed it due to the scheduling.
*/
msleep(1);
ret = regmap_clear_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2,
*mask);
if (ret)
dev_err(&rdev->dev,
"Failed to re-enable voltage monitoring (%d)\n",
ret);
}
}
static int voltage_change_prepare(struct regulator_dev *rdev, unsigned int sel,
unsigned int *mask)
{
int ret;
*mask = 0;
if (rdev->desc->ops->is_enabled(rdev)) {
int now, new;
now = rdev->desc->ops->get_voltage_sel(rdev);
if (now < 0)
return now;
now = rdev->desc->ops->list_voltage(rdev, now);
if (now < 0)
return now;
new = rdev->desc->ops->list_voltage(rdev, sel);
if (new < 0)
return new;
/*
* If we increase LDO voltage when LDO is enabled we need to
* disable the power-good detection until voltage has reached
* the new level. According to HW colleagues the maximum time
* it takes is 1000us. I assume that on systems with light load
* this might be less - and we could probably use DT to give
* system specific delay value if performance matters.
*
* Well, knowing we use I2C here and can add scheduling delays
* I don't think it is worth the hassle and I just add fixed
* 1ms sleep here (and allow scheduling). If this turns out to
* be a problem we can change it to delay and make the delay
* time configurable.
*/
if (new > now) {
int tmp;
int prot_bit;
int ldo_offset = rdev->desc->id - BD718XX_LDO1;
prot_bit = BD718XX_LDO1_VRMON80 << ldo_offset;
ret = regmap_read(rdev->regmap, BD718XX_REG_MVRFLTMASK2,
&tmp);
if (ret) {
dev_err(&rdev->dev,
"Failed to read voltage monitoring state\n");
return ret;
}
if (!(tmp & prot_bit)) {
/* We disable protection if it was enabled... */
ret = regmap_set_bits(rdev->regmap,
BD718XX_REG_MVRFLTMASK2,
prot_bit);
/* ...and we also want to re-enable it */
*mask = prot_bit;
}
if (ret) {
dev_err(&rdev->dev,
"Failed to stop voltage monitoring\n");
return ret;
}
}
}
return 0;
}
static int bd718xx_set_voltage_sel_restricted(struct regulator_dev *rdev,
unsigned int sel)
{
int ret;
int mask;
ret = voltage_change_prepare(rdev, sel, &mask);
if (ret)
return ret;
ret = regulator_set_voltage_sel_regmap(rdev, sel);
voltage_change_done(rdev, sel, &mask);
return ret;
}
static int bd718xx_set_voltage_sel_pickable_restricted(
struct regulator_dev *rdev, unsigned int sel)
{
int ret;
int mask;
ret = voltage_change_prepare(rdev, sel, &mask);
if (ret)
return ret;
ret = regulator_set_voltage_sel_pickable_regmap(rdev, sel);
voltage_change_done(rdev, sel, &mask);
return ret;
}
static int bd71837_set_voltage_sel_pickable_restricted(
struct regulator_dev *rdev, unsigned int sel)
{
if (rdev->desc->ops->is_enabled(rdev))
return -EBUSY;
return regulator_set_voltage_sel_pickable_regmap(rdev, sel);
}
/*
* BD71837 BUCK1/2/3/4
* BD71847 BUCK1/2
* 0.70 to 1.30V (10mV step)
*/
static const struct linear_range bd718xx_dvs_buck_volts[] = {
REGULATOR_LINEAR_RANGE(700000, 0x00, 0x3C, 10000),
REGULATOR_LINEAR_RANGE(1300000, 0x3D, 0x3F, 0),
};
/*
* BD71837 BUCK5
* 0.7V to 1.35V (range 0)
* and
* 0.675 to 1.325 (range 1)
*/
static const struct linear_range bd71837_buck5_volts[] = {
/* Ranges when VOLT_SEL bit is 0 */
REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000),
REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000),
REGULATOR_LINEAR_RANGE(1200000, 0x06, 0x07, 150000),
/* Ranges when VOLT_SEL bit is 1 */
REGULATOR_LINEAR_RANGE(675000, 0x0, 0x3, 100000),
REGULATOR_LINEAR_RANGE(1025000, 0x4, 0x5, 50000),
REGULATOR_LINEAR_RANGE(1175000, 0x6, 0x7, 150000),
};
/*
* Range selector for first 3 linear ranges is 0x0
* and 0x1 for last 3 ranges.
*/
static const unsigned int bd71837_buck5_volt_range_sel[] = {
0x0, 0x0, 0x0, 0x80, 0x80, 0x80
};
/*
* BD71847 BUCK3
*/
static const struct linear_range bd71847_buck3_volts[] = {
/* Ranges when VOLT_SEL bits are 00 */
REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000),
REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000),
REGULATOR_LINEAR_RANGE(1200000, 0x06, 0x07, 150000),
/* Ranges when VOLT_SEL bits are 01 */
REGULATOR_LINEAR_RANGE(550000, 0x0, 0x7, 50000),
/* Ranges when VOLT_SEL bits are 11 */
REGULATOR_LINEAR_RANGE(675000, 0x0, 0x3, 100000),
REGULATOR_LINEAR_RANGE(1025000, 0x4, 0x5, 50000),
REGULATOR_LINEAR_RANGE(1175000, 0x6, 0x7, 150000),
};
static const unsigned int bd71847_buck3_volt_range_sel[] = {
0x0, 0x0, 0x0, 0x40, 0x80, 0x80, 0x80
};
static const struct linear_range bd71847_buck4_volts[] = {
REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000),
REGULATOR_LINEAR_RANGE(2600000, 0x00, 0x03, 100000),
};
static const unsigned int bd71847_buck4_volt_range_sel[] = { 0x0, 0x40 };
/*
* BUCK6
* 3.0V to 3.3V (step 100mV)
*/
static const struct linear_range bd71837_buck6_volts[] = {
REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000),
};
/*
* BD71837 BUCK7
* BD71847 BUCK5
* 000 = 1.605V
* 001 = 1.695V
* 010 = 1.755V
* 011 = 1.8V (Initial)
* 100 = 1.845V
* 101 = 1.905V
* 110 = 1.95V
* 111 = 1.995V
*/
static const unsigned int bd718xx_3rd_nodvs_buck_volts[] = {
1605000, 1695000, 1755000, 1800000, 1845000, 1905000, 1950000, 1995000
};
/*
* BUCK8
* 0.8V to 1.40V (step 10mV)
*/
static const struct linear_range bd718xx_4th_nodvs_buck_volts[] = {
REGULATOR_LINEAR_RANGE(800000, 0x00, 0x3C, 10000),
};
/*
* LDO1
* 3.0 to 3.3V (100mV step)
*/
static const struct linear_range bd718xx_ldo1_volts[] = {
REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000),
REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
};
static const unsigned int bd718xx_ldo1_volt_range_sel[] = { 0x0, 0x20 };
/*
* LDO2
* 0.8 or 0.9V
*/
static const unsigned int ldo_2_volts[] = {
900000, 800000
};
/*
* LDO3
* 1.8 to 3.3V (100mV step)
*/
static const struct linear_range bd718xx_ldo3_volts[] = {
REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
};
/*
* LDO4
* 0.9 to 1.8V (100mV step)
*/
static const struct linear_range bd718xx_ldo4_volts[] = {
REGULATOR_LINEAR_RANGE(900000, 0x00, 0x09, 100000),
};
/*
* LDO5 for BD71837
* 1.8 to 3.3V (100mV step)
*/
static const struct linear_range bd71837_ldo5_volts[] = {
REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
};
/*
* LDO5 for BD71837
* 1.8 to 3.3V (100mV step)
*/
static const struct linear_range bd71847_ldo5_volts[] = {
REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
REGULATOR_LINEAR_RANGE(800000, 0x00, 0x0F, 100000),
};
static const unsigned int bd71847_ldo5_volt_range_sel[] = { 0x0, 0x20 };
/*
* LDO6
* 0.9 to 1.8V (100mV step)
*/
static const struct linear_range bd718xx_ldo6_volts[] = {
REGULATOR_LINEAR_RANGE(900000, 0x00, 0x09, 100000),
};
/*
* LDO7
* 1.8 to 3.3V (100mV step)
*/
static const struct linear_range bd71837_ldo7_volts[] = {
REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000),
};
struct reg_init {
unsigned int reg;
unsigned int mask;
unsigned int val;
};
struct bd718xx_regulator_data {
struct regulator_desc desc;
const struct rohm_dvs_config dvs;
const struct reg_init init;
const struct reg_init *additional_inits;
int additional_init_amnt;
};
static int bd718x7_xvp_sanity_check(struct regulator_dev *rdev, int lim_uV,
int severity)
{
/*
* BD71837/47/50 ... (ICs supported by this driver) do not provide
* warnings, only protection
*/
if (severity != REGULATOR_SEVERITY_PROT) {
dev_err(&rdev->dev,
"Unsupported Under Voltage protection level\n");
return -EINVAL;
}
/*
* And protection limit is not changeable. It can only be enabled
* or disabled
*/
if (lim_uV)
return -EINVAL;
return 0;
}
static int bd718x7_set_ldo_uvp(struct regulator_dev *rdev, int lim_uV,
int severity, bool enable)
{
int ldo_offset = rdev->desc->id - BD718XX_LDO1;
int prot_bit, ret;
ret = bd718x7_xvp_sanity_check(rdev, lim_uV, severity);
if (ret)
return ret;
prot_bit = BD718XX_LDO1_VRMON80 << ldo_offset;
if (enable)
return regmap_clear_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2,
prot_bit);
return regmap_set_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2,
prot_bit);
}
static int bd718x7_get_buck_prot_reg(int id, int *reg)
{
if (id > BD718XX_BUCK8) {
WARN_ON(id > BD718XX_BUCK8);
return -EINVAL;
}
if (id > BD718XX_BUCK4)
*reg = BD718XX_REG_MVRFLTMASK0;
else
*reg = BD718XX_REG_MVRFLTMASK1;
return 0;
}
static int bd718x7_get_buck_ovp_info(int id, int *reg, int *bit)
{
int ret;
ret = bd718x7_get_buck_prot_reg(id, reg);
if (ret)
return ret;
*bit = BIT((id % 4) * 2 + 1);
return 0;
}
static int bd718x7_get_buck_uvp_info(int id, int *reg, int *bit)
{
int ret;
ret = bd718x7_get_buck_prot_reg(id, reg);
if (ret)
return ret;
*bit = BIT((id % 4) * 2);
return 0;
}
static int bd718x7_set_buck_uvp(struct regulator_dev *rdev, int lim_uV,
int severity, bool enable)
{
int bit, reg, ret;
ret = bd718x7_xvp_sanity_check(rdev, lim_uV, severity);
if (ret)
return ret;
ret = bd718x7_get_buck_uvp_info(rdev->desc->id, &reg, &bit);
if (ret)
return ret;
if (enable)
return regmap_clear_bits(rdev->regmap, reg, bit);
return regmap_set_bits(rdev->regmap, reg, bit);
}
static int bd718x7_set_buck_ovp(struct regulator_dev *rdev, int lim_uV,
int severity,
bool enable)
{
int bit, reg, ret;
ret = bd718x7_xvp_sanity_check(rdev, lim_uV, severity);
if (ret)
return ret;
ret = bd718x7_get_buck_ovp_info(rdev->desc->id, &reg, &bit);
if (ret)
return ret;
if (enable)
return regmap_clear_bits(rdev->regmap, reg, bit);
return regmap_set_bits(rdev->regmap, reg, bit);
}
/*
* OPS common for BD71847 and BD71850
*/
BD718XX_OPS(bd718xx_pickable_range_ldo_ops,
regulator_list_voltage_pickable_linear_range, NULL,
bd718xx_set_voltage_sel_pickable_restricted,
regulator_get_voltage_sel_pickable_regmap, NULL, NULL,
bd718x7_set_ldo_uvp, NULL);
/* BD71847 and BD71850 LDO 5 is by default OFF at RUN state */
static const struct regulator_ops bd718xx_ldo5_ops_hwstate = {
.is_enabled = never_enabled_by_hwstate,
.list_voltage = regulator_list_voltage_pickable_linear_range,
.set_voltage_sel = bd718xx_set_voltage_sel_pickable_restricted,
.get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
.set_under_voltage_protection = bd718x7_set_ldo_uvp,
};
BD718XX_OPS(bd718xx_pickable_range_buck_ops,
regulator_list_voltage_pickable_linear_range, NULL,
regulator_set_voltage_sel_pickable_regmap,
regulator_get_voltage_sel_pickable_regmap,
regulator_set_voltage_time_sel, NULL, bd718x7_set_buck_uvp,
bd718x7_set_buck_ovp);
BD718XX_OPS(bd718xx_ldo_regulator_ops, regulator_list_voltage_linear_range,
NULL, bd718xx_set_voltage_sel_restricted,
regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp,
NULL);
BD718XX_OPS(bd718xx_ldo_regulator_nolinear_ops, regulator_list_voltage_table,
NULL, bd718xx_set_voltage_sel_restricted,
regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp,
NULL);
BD718XX_OPS(bd718xx_buck_regulator_ops, regulator_list_voltage_linear_range,
NULL, regulator_set_voltage_sel_regmap,
regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp);
BD718XX_OPS(bd718xx_buck_regulator_nolinear_ops, regulator_list_voltage_table,
regulator_map_voltage_ascend, regulator_set_voltage_sel_regmap,
regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp);
/*
* OPS for BD71837
*/
BD718XX_OPS(bd71837_pickable_range_ldo_ops,
regulator_list_voltage_pickable_linear_range, NULL,
bd71837_set_voltage_sel_pickable_restricted,
regulator_get_voltage_sel_pickable_regmap, NULL, NULL,
bd718x7_set_ldo_uvp, NULL);
BD718XX_OPS(bd71837_pickable_range_buck_ops,
regulator_list_voltage_pickable_linear_range, NULL,
bd71837_set_voltage_sel_pickable_restricted,
regulator_get_voltage_sel_pickable_regmap,
regulator_set_voltage_time_sel, NULL, bd718x7_set_buck_uvp,
bd718x7_set_buck_ovp);
BD718XX_OPS(bd71837_ldo_regulator_ops, regulator_list_voltage_linear_range,
NULL, rohm_regulator_set_voltage_sel_restricted,
regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp,
NULL);
BD718XX_OPS(bd71837_ldo_regulator_nolinear_ops, regulator_list_voltage_table,
NULL, rohm_regulator_set_voltage_sel_restricted,
regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp,
NULL);
BD718XX_OPS(bd71837_buck_regulator_ops, regulator_list_voltage_linear_range,
NULL, rohm_regulator_set_voltage_sel_restricted,
regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp);
BD718XX_OPS(bd71837_buck_regulator_nolinear_ops, regulator_list_voltage_table,
regulator_map_voltage_ascend, rohm_regulator_set_voltage_sel_restricted,
regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp);
/*
* BD71837 bucks 3 and 4 support defining their enable/disable state also
* when buck enable state is under HW state machine control. In that case the
* bit [2] in CTRL register is used to indicate if regulator should be ON.
*/
static const struct regulator_ops bd71837_buck34_ops_hwctrl = {
.is_enabled = bd71837_get_buck34_enable_hwctrl,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = regulator_set_ramp_delay_regmap,
.set_under_voltage_protection = bd718x7_set_buck_uvp,
.set_over_voltage_protection = bd718x7_set_buck_ovp,
};
/*
* OPS for all of the ICs - BD718(37/47/50)
*/
BD718XX_OPS(bd718xx_dvs_buck_regulator_ops, regulator_list_voltage_linear_range,
NULL, regulator_set_voltage_sel_regmap,
regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
regulator_set_ramp_delay_regmap, bd718x7_set_buck_uvp,
bd718x7_set_buck_ovp);
/*
* There is a HW quirk in BD71837. The shutdown sequence timings for
* bucks/LDOs which are controlled via register interface are changed.
* At PMIC poweroff the voltage for BUCK6/7 is cut immediately at the
* beginning of shut-down sequence. As bucks 6 and 7 are parent
* supplies for LDO5 and LDO6 - this causes LDO5/6 voltage
* monitoring to errorneously detect under voltage and force PMIC to
* emergency state instead of poweroff. In order to avoid this we
* disable voltage monitoring for LDO5 and LDO6
*/
static const struct reg_init bd71837_ldo5_inits[] = {
{
.reg = BD718XX_REG_MVRFLTMASK2,
.mask = BD718XX_LDO5_VRMON80,
.val = BD718XX_LDO5_VRMON80,
},
};
static const struct reg_init bd71837_ldo6_inits[] = {
{
.reg = BD718XX_REG_MVRFLTMASK2,
.mask = BD718XX_LDO6_VRMON80,
.val = BD718XX_LDO6_VRMON80,
},
};
static int buck_set_hw_dvs_levels(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *cfg)
{
struct bd718xx_regulator_data *data;
data = container_of(desc, struct bd718xx_regulator_data, desc);
return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap);
}
static const struct regulator_ops *bd71847_swcontrol_ops[] = {
&bd718xx_dvs_buck_regulator_ops, &bd718xx_dvs_buck_regulator_ops,
&bd718xx_pickable_range_buck_ops, &bd718xx_pickable_range_buck_ops,
&bd718xx_buck_regulator_nolinear_ops, &bd718xx_buck_regulator_ops,
&bd718xx_pickable_range_ldo_ops, &bd718xx_ldo_regulator_nolinear_ops,
&bd718xx_ldo_regulator_ops, &bd718xx_ldo_regulator_ops,
&bd718xx_pickable_range_ldo_ops, &bd718xx_ldo_regulator_ops,
};
static const struct regulator_ops *bd71847_hwcontrol_ops[] = {
&BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops),
&BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops),
&BD718XX_HWOPNAME(bd718xx_pickable_range_buck_ops),
&BD718XX_HWOPNAME(bd718xx_pickable_range_buck_ops),
&BD718XX_HWOPNAME(bd718xx_buck_regulator_nolinear_ops),
&BD718XX_HWOPNAME(bd718xx_buck_regulator_ops),
&BD718XX_HWOPNAME(bd718xx_pickable_range_ldo_ops),
&BD718XX_HWOPNAME(bd718xx_ldo_regulator_nolinear_ops),
&BD718XX_HWOPNAME(bd718xx_ldo_regulator_ops),
&BD718XX_HWOPNAME(bd718xx_ldo_regulator_ops),
&bd718xx_ldo5_ops_hwstate,
&BD718XX_HWOPNAME(bd718xx_ldo_regulator_ops),
};
static struct bd718xx_regulator_data bd71847_regulators[] = {
{
.desc = {
.name = "buck1",
.of_match = of_match_ptr("BUCK1"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK1,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_dvs_buck_volts,
.n_linear_ranges =
ARRAY_SIZE(bd718xx_dvs_buck_volts),
.vsel_reg = BD718XX_REG_BUCK1_VOLT_RUN,
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71847_BUCK1_STARTUP_TIME,
.owner = THIS_MODULE,
.ramp_delay_table = bd718xx_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay),
.ramp_reg = BD718XX_REG_BUCK1_CTRL,
.ramp_mask = BUCK_RAMPRATE_MASK,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND,
.run_reg = BD718XX_REG_BUCK1_VOLT_RUN,
.run_mask = DVS_BUCK_RUN_MASK,
.idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE,
.idle_mask = DVS_BUCK_RUN_MASK,
.suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP,
.suspend_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK1_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck2",
.of_match = of_match_ptr("BUCK2"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK2,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_dvs_buck_volts),
.vsel_reg = BD718XX_REG_BUCK2_VOLT_RUN,
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71847_BUCK2_STARTUP_TIME,
.ramp_delay_table = bd718xx_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay),
.ramp_reg = BD718XX_REG_BUCK2_CTRL,
.ramp_mask = BUCK_RAMPRATE_MASK,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE,
.run_reg = BD718XX_REG_BUCK2_VOLT_RUN,
.run_mask = DVS_BUCK_RUN_MASK,
.idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE,
.idle_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK2_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck3",
.of_match = of_match_ptr("BUCK3"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK3,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71847_BUCK3_VOLTAGE_NUM,
.linear_ranges = bd71847_buck3_volts,
.n_linear_ranges =
ARRAY_SIZE(bd71847_buck3_volts),
.vsel_reg = BD718XX_REG_1ST_NODVS_BUCK_VOLT,
.vsel_mask = BD718XX_1ST_NODVS_BUCK_MASK,
.vsel_range_reg = BD718XX_REG_1ST_NODVS_BUCK_VOLT,
.vsel_range_mask = BD71847_BUCK3_RANGE_MASK,
.linear_range_selectors = bd71847_buck3_volt_range_sel,
.enable_reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71847_BUCK3_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck4",
.of_match = of_match_ptr("BUCK4"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK4,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71847_BUCK4_VOLTAGE_NUM,
.linear_ranges = bd71847_buck4_volts,
.n_linear_ranges =
ARRAY_SIZE(bd71847_buck4_volts),
.enable_reg = BD718XX_REG_2ND_NODVS_BUCK_CTRL,
.vsel_reg = BD718XX_REG_2ND_NODVS_BUCK_VOLT,
.vsel_mask = BD71847_BUCK4_MASK,
.vsel_range_reg = BD718XX_REG_2ND_NODVS_BUCK_VOLT,
.vsel_range_mask = BD71847_BUCK4_RANGE_MASK,
.linear_range_selectors = bd71847_buck4_volt_range_sel,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71847_BUCK4_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_2ND_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck5",
.of_match = of_match_ptr("BUCK5"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK5,
.type = REGULATOR_VOLTAGE,
.volt_table = &bd718xx_3rd_nodvs_buck_volts[0],
.n_voltages = ARRAY_SIZE(bd718xx_3rd_nodvs_buck_volts),
.vsel_reg = BD718XX_REG_3RD_NODVS_BUCK_VOLT,
.vsel_mask = BD718XX_3RD_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71847_BUCK5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck6",
.of_match = of_match_ptr("BUCK6"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK6,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_4TH_NODVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_4th_nodvs_buck_volts,
.n_linear_ranges =
ARRAY_SIZE(bd718xx_4th_nodvs_buck_volts),
.vsel_reg = BD718XX_REG_4TH_NODVS_BUCK_VOLT,
.vsel_mask = BD718XX_4TH_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71847_BUCK6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "ldo1",
.of_match = of_match_ptr("LDO1"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO1,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO1_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo1_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo1_volts),
.vsel_reg = BD718XX_REG_LDO1_VOLT,
.vsel_mask = BD718XX_LDO1_MASK,
.vsel_range_reg = BD718XX_REG_LDO1_VOLT,
.vsel_range_mask = BD718XX_LDO1_RANGE_MASK,
.linear_range_selectors = bd718xx_ldo1_volt_range_sel,
.enable_reg = BD718XX_REG_LDO1_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71847_LDO1_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO1_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo2",
.of_match = of_match_ptr("LDO2"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO2,
.type = REGULATOR_VOLTAGE,
.volt_table = &ldo_2_volts[0],
.vsel_reg = BD718XX_REG_LDO2_VOLT,
.vsel_mask = BD718XX_LDO2_MASK,
.n_voltages = ARRAY_SIZE(ldo_2_volts),
.enable_reg = BD718XX_REG_LDO2_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71847_LDO2_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO2_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo3",
.of_match = of_match_ptr("LDO3"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO3,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO3_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo3_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo3_volts),
.vsel_reg = BD718XX_REG_LDO3_VOLT,
.vsel_mask = BD718XX_LDO3_MASK,
.enable_reg = BD718XX_REG_LDO3_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71847_LDO3_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO3_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo4",
.of_match = of_match_ptr("LDO4"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO4,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO4_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo4_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo4_volts),
.vsel_reg = BD718XX_REG_LDO4_VOLT,
.vsel_mask = BD718XX_LDO4_MASK,
.enable_reg = BD718XX_REG_LDO4_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71847_LDO4_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO4_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo5",
.of_match = of_match_ptr("LDO5"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO5,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71847_LDO5_VOLTAGE_NUM,
.linear_ranges = bd71847_ldo5_volts,
.n_linear_ranges = ARRAY_SIZE(bd71847_ldo5_volts),
.vsel_reg = BD718XX_REG_LDO5_VOLT,
.vsel_mask = BD71847_LDO5_MASK,
.vsel_range_reg = BD718XX_REG_LDO5_VOLT,
.vsel_range_mask = BD71847_LDO5_RANGE_MASK,
.linear_range_selectors = bd71847_ldo5_volt_range_sel,
.enable_reg = BD718XX_REG_LDO5_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71847_LDO5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO5_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo6",
.of_match = of_match_ptr("LDO6"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO6,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO6_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo6_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo6_volts),
/* LDO6 is supplied by buck5 */
.supply_name = "buck5",
.vsel_reg = BD718XX_REG_LDO6_VOLT,
.vsel_mask = BD718XX_LDO6_MASK,
.enable_reg = BD718XX_REG_LDO6_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71847_LDO6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO6_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
};
static const struct regulator_ops *bd71837_swcontrol_ops[] = {
&bd718xx_dvs_buck_regulator_ops, &bd718xx_dvs_buck_regulator_ops,
&bd718xx_dvs_buck_regulator_ops, &bd718xx_dvs_buck_regulator_ops,
&bd71837_pickable_range_buck_ops, &bd71837_buck_regulator_ops,
&bd71837_buck_regulator_nolinear_ops, &bd71837_buck_regulator_ops,
&bd71837_pickable_range_ldo_ops, &bd71837_ldo_regulator_nolinear_ops,
&bd71837_ldo_regulator_ops, &bd71837_ldo_regulator_ops,
&bd71837_ldo_regulator_ops, &bd71837_ldo_regulator_ops,
&bd71837_ldo_regulator_ops,
};
static const struct regulator_ops *bd71837_hwcontrol_ops[] = {
&BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops),
&BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops),
&bd71837_buck34_ops_hwctrl, &bd71837_buck34_ops_hwctrl,
&BD718XX_HWOPNAME(bd71837_pickable_range_buck_ops),
&BD718XX_HWOPNAME(bd71837_buck_regulator_ops),
&BD718XX_HWOPNAME(bd71837_buck_regulator_nolinear_ops),
&BD718XX_HWOPNAME(bd71837_buck_regulator_ops),
&BD718XX_HWOPNAME(bd71837_pickable_range_ldo_ops),
&BD718XX_HWOPNAME(bd71837_ldo_regulator_nolinear_ops),
&BD718XX_HWOPNAME(bd71837_ldo_regulator_ops),
&BD718XX_HWOPNAME(bd71837_ldo_regulator_ops),
&BD718XX_HWOPNAME(bd71837_ldo_regulator_ops),
&BD718XX_HWOPNAME(bd71837_ldo_regulator_ops),
&BD718XX_HWOPNAME(bd71837_ldo_regulator_ops),
};
static struct bd718xx_regulator_data bd71837_regulators[] = {
{
.desc = {
.name = "buck1",
.of_match = of_match_ptr("BUCK1"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK1,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_dvs_buck_volts),
.vsel_reg = BD718XX_REG_BUCK1_VOLT_RUN,
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK1_STARTUP_TIME,
.ramp_delay_table = bd718xx_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay),
.ramp_reg = BD718XX_REG_BUCK1_CTRL,
.ramp_mask = BUCK_RAMPRATE_MASK,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND,
.run_reg = BD718XX_REG_BUCK1_VOLT_RUN,
.run_mask = DVS_BUCK_RUN_MASK,
.idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE,
.idle_mask = DVS_BUCK_RUN_MASK,
.suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP,
.suspend_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK1_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck2",
.of_match = of_match_ptr("BUCK2"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK2,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_dvs_buck_volts),
.vsel_reg = BD718XX_REG_BUCK2_VOLT_RUN,
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK2_STARTUP_TIME,
.ramp_delay_table = bd718xx_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay),
.ramp_reg = BD718XX_REG_BUCK2_CTRL,
.ramp_mask = BUCK_RAMPRATE_MASK,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE,
.run_reg = BD718XX_REG_BUCK2_VOLT_RUN,
.run_mask = DVS_BUCK_RUN_MASK,
.idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE,
.idle_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK2_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck3",
.of_match = of_match_ptr("BUCK3"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK3,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_dvs_buck_volts),
.vsel_reg = BD71837_REG_BUCK3_VOLT_RUN,
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD71837_REG_BUCK3_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK3_STARTUP_TIME,
.ramp_delay_table = bd718xx_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay),
.ramp_reg = BD71837_REG_BUCK3_CTRL,
.ramp_mask = BUCK_RAMPRATE_MASK,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN,
.run_reg = BD71837_REG_BUCK3_VOLT_RUN,
.run_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD71837_REG_BUCK3_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck4",
.of_match = of_match_ptr("BUCK4"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK4,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_dvs_buck_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_dvs_buck_volts),
.vsel_reg = BD71837_REG_BUCK4_VOLT_RUN,
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD71837_REG_BUCK4_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK4_STARTUP_TIME,
.ramp_delay_table = bd718xx_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay),
.ramp_reg = BD71837_REG_BUCK4_CTRL,
.ramp_mask = BUCK_RAMPRATE_MASK,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN,
.run_reg = BD71837_REG_BUCK4_VOLT_RUN,
.run_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD71837_REG_BUCK4_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck5",
.of_match = of_match_ptr("BUCK5"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK5,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71837_BUCK5_VOLTAGE_NUM,
.linear_ranges = bd71837_buck5_volts,
.n_linear_ranges =
ARRAY_SIZE(bd71837_buck5_volts),
.vsel_reg = BD718XX_REG_1ST_NODVS_BUCK_VOLT,
.vsel_mask = BD71837_BUCK5_MASK,
.vsel_range_reg = BD718XX_REG_1ST_NODVS_BUCK_VOLT,
.vsel_range_mask = BD71837_BUCK5_RANGE_MASK,
.linear_range_selectors = bd71837_buck5_volt_range_sel,
.enable_reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck6",
.of_match = of_match_ptr("BUCK6"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK6,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71837_BUCK6_VOLTAGE_NUM,
.linear_ranges = bd71837_buck6_volts,
.n_linear_ranges =
ARRAY_SIZE(bd71837_buck6_volts),
.vsel_reg = BD718XX_REG_2ND_NODVS_BUCK_VOLT,
.vsel_mask = BD71837_BUCK6_MASK,
.enable_reg = BD718XX_REG_2ND_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_2ND_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck7",
.of_match = of_match_ptr("BUCK7"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK7,
.type = REGULATOR_VOLTAGE,
.volt_table = &bd718xx_3rd_nodvs_buck_volts[0],
.n_voltages = ARRAY_SIZE(bd718xx_3rd_nodvs_buck_volts),
.vsel_reg = BD718XX_REG_3RD_NODVS_BUCK_VOLT,
.vsel_mask = BD718XX_3RD_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK7_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "buck8",
.of_match = of_match_ptr("BUCK8"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_BUCK8,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_4TH_NODVS_BUCK_VOLTAGE_NUM,
.linear_ranges = bd718xx_4th_nodvs_buck_volts,
.n_linear_ranges =
ARRAY_SIZE(bd718xx_4th_nodvs_buck_volts),
.vsel_reg = BD718XX_REG_4TH_NODVS_BUCK_VOLT,
.vsel_mask = BD718XX_4TH_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.enable_time = BD71837_BUCK8_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL,
.mask = BD718XX_BUCK_SEL,
.val = BD718XX_BUCK_SEL,
},
},
{
.desc = {
.name = "ldo1",
.of_match = of_match_ptr("LDO1"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO1,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO1_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo1_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo1_volts),
.vsel_reg = BD718XX_REG_LDO1_VOLT,
.vsel_mask = BD718XX_LDO1_MASK,
.vsel_range_reg = BD718XX_REG_LDO1_VOLT,
.vsel_range_mask = BD718XX_LDO1_RANGE_MASK,
.linear_range_selectors = bd718xx_ldo1_volt_range_sel,
.enable_reg = BD718XX_REG_LDO1_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO1_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO1_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo2",
.of_match = of_match_ptr("LDO2"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO2,
.type = REGULATOR_VOLTAGE,
.volt_table = &ldo_2_volts[0],
.vsel_reg = BD718XX_REG_LDO2_VOLT,
.vsel_mask = BD718XX_LDO2_MASK,
.n_voltages = ARRAY_SIZE(ldo_2_volts),
.enable_reg = BD718XX_REG_LDO2_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO2_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO2_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo3",
.of_match = of_match_ptr("LDO3"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO3,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO3_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo3_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo3_volts),
.vsel_reg = BD718XX_REG_LDO3_VOLT,
.vsel_mask = BD718XX_LDO3_MASK,
.enable_reg = BD718XX_REG_LDO3_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO3_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO3_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo4",
.of_match = of_match_ptr("LDO4"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO4,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO4_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo4_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo4_volts),
.vsel_reg = BD718XX_REG_LDO4_VOLT,
.vsel_mask = BD718XX_LDO4_MASK,
.enable_reg = BD718XX_REG_LDO4_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO4_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO4_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
{
.desc = {
.name = "ldo5",
.of_match = of_match_ptr("LDO5"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO5,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71837_LDO5_VOLTAGE_NUM,
.linear_ranges = bd71837_ldo5_volts,
.n_linear_ranges = ARRAY_SIZE(bd71837_ldo5_volts),
/* LDO5 is supplied by buck6 */
.supply_name = "buck6",
.vsel_reg = BD718XX_REG_LDO5_VOLT,
.vsel_mask = BD71837_LDO5_MASK,
.enable_reg = BD718XX_REG_LDO5_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO5_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
.additional_inits = bd71837_ldo5_inits,
.additional_init_amnt = ARRAY_SIZE(bd71837_ldo5_inits),
},
{
.desc = {
.name = "ldo6",
.of_match = of_match_ptr("LDO6"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO6,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD718XX_LDO6_VOLTAGE_NUM,
.linear_ranges = bd718xx_ldo6_volts,
.n_linear_ranges = ARRAY_SIZE(bd718xx_ldo6_volts),
/* LDO6 is supplied by buck7 */
.supply_name = "buck7",
.vsel_reg = BD718XX_REG_LDO6_VOLT,
.vsel_mask = BD718XX_LDO6_MASK,
.enable_reg = BD718XX_REG_LDO6_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD718XX_REG_LDO6_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
.additional_inits = bd71837_ldo6_inits,
.additional_init_amnt = ARRAY_SIZE(bd71837_ldo6_inits),
},
{
.desc = {
.name = "ldo7",
.of_match = of_match_ptr("LDO7"),
.regulators_node = of_match_ptr("regulators"),
.id = BD718XX_LDO7,
.type = REGULATOR_VOLTAGE,
.n_voltages = BD71837_LDO7_VOLTAGE_NUM,
.linear_ranges = bd71837_ldo7_volts,
.n_linear_ranges = ARRAY_SIZE(bd71837_ldo7_volts),
.vsel_reg = BD71837_REG_LDO7_VOLT,
.vsel_mask = BD71837_LDO7_MASK,
.enable_reg = BD71837_REG_LDO7_VOLT,
.enable_mask = BD718XX_LDO_EN,
.enable_time = BD71837_LDO7_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
.reg = BD71837_REG_LDO7_VOLT,
.mask = BD718XX_LDO_SEL,
.val = BD718XX_LDO_SEL,
},
},
};
static void mark_hw_controlled(struct device *dev, struct device_node *np,
struct bd718xx_regulator_data *reg_data,
unsigned int num_reg_data, int *info)
{
int i;
for (i = 1; i <= num_reg_data; i++) {
if (!of_node_name_eq(np, reg_data[i-1].desc.of_match))
continue;
*info |= 1 << (i - 1);
dev_dbg(dev, "regulator %d runlevel controlled\n", i);
return;
}
dev_warn(dev, "Bad regulator node\n");
}
/*
* Setups where regulator (especially the buck8) output voltage is scaled
* by adding external connection where some other regulator output is connected
* to feedback-pin (over suitable resistors) is getting popular amongst users
* of BD71837. (This allows for example scaling down the buck8 voltages to suit
* lover GPU voltages for projects where buck8 is (ab)used to supply power
* for GPU. Additionally some setups do allow DVS for buck8 but as this do
* produce voltage spikes the HW must be evaluated to be able to survive this
* - hence I keep the DVS disabled for non DVS bucks by default. I don't want
* to help you burn your proto board)
*
* So we allow describing this external connection from DT and scale the
* voltages accordingly. This is what the connection should look like:
*
* |------------|
* | buck 8 |-------+----->Vout
* | | |
* |------------| |
* | FB pin |
* | |
* +-------+--R2---+
* |
* R1
* |
* V FB-pull-up
*
* Here the buck output is sifted according to formula:
*
* Vout_o = Vo - (Vpu - Vo)*R2/R1
* Linear_step = step_orig*(R1+R2)/R1
*
* where:
* Vout_o is adjusted voltage output at vsel reg value 0
* Vo is original voltage output at vsel reg value 0
* Vpu is the pull-up voltage V FB-pull-up in the picture
* R1 and R2 are resistor values.
*
* As a real world example for buck8 and a specific GPU:
* VLDO = 1.6V (used as FB-pull-up)
* R1 = 1000ohms
* R2 = 150ohms
* VSEL 0x0 => 0.8V – (VLDO – 0.8) * R2 / R1 = 0.68V
* Linear Step = 10mV * (R1 + R2) / R1 = 11.5mV
*/
static int setup_feedback_loop(struct device *dev, struct device_node *np,
struct bd718xx_regulator_data *reg_data,
unsigned int num_reg_data, int fb_uv)
{
int i, r1, r2, ret;
/*
* We do adjust the values in the global desc based on DT settings.
* This may not be best approach as it can cause problems if more than
* one PMIC is controlled from same processor. I don't see such use-case
* for BD718x7 now - so we spare some bits.
*
* If this will point out to be a problem - then we can allocate new
* bd718xx_regulator_data array at probe and just use the global
* array as a template where we copy initial values. Then we can
* use allocated descs for regultor registration and do IC specific
* modifications to this copy while leaving other PMICs untouched. But
* that means allocating new array for each PMIC - and currently I see
* no need for that.
*/
for (i = 0; i < num_reg_data; i++) {
struct regulator_desc *desc = &reg_data[i].desc;
int j;
if (!of_node_name_eq(np, desc->of_match))
continue;
pr_info("Looking at node '%s'\n", desc->of_match);
/* The feedback loop connection does not make sense for LDOs */
if (desc->id >= BD718XX_LDO1)
return -EINVAL;
ret = of_property_read_u32(np, "rohm,feedback-pull-up-r1-ohms",
&r1);
if (ret)
return ret;
if (!r1)
return -EINVAL;
ret = of_property_read_u32(np, "rohm,feedback-pull-up-r2-ohms",
&r2);
if (ret)
return ret;
if (desc->n_linear_ranges && desc->linear_ranges) {
struct linear_range *new;
new = devm_kzalloc(dev, desc->n_linear_ranges *
sizeof(struct linear_range),
GFP_KERNEL);
if (!new)
return -ENOMEM;
for (j = 0; j < desc->n_linear_ranges; j++) {
int min = desc->linear_ranges[j].min;
int step = desc->linear_ranges[j].step;
min -= (fb_uv - min)*r2/r1;
step = step * (r1 + r2);
step /= r1;
new[j].min = min;
new[j].step = step;
dev_dbg(dev, "%s: old range min %d, step %d\n",
desc->name, desc->linear_ranges[j].min,
desc->linear_ranges[j].step);
dev_dbg(dev, "new range min %d, step %d\n", min,
step);
}
desc->linear_ranges = new;
}
dev_dbg(dev, "regulator '%s' has FB pull-up configured\n",
desc->name);
return 0;
}
return -ENODEV;
}
static int get_special_regulators(struct device *dev,
struct bd718xx_regulator_data *reg_data,
unsigned int num_reg_data, int *info)
{
int ret;
struct device_node *np;
struct device_node *nproot = dev->of_node;
int uv;
*info = 0;
nproot = of_get_child_by_name(nproot, "regulators");
if (!nproot) {
dev_err(dev, "failed to find regulators node\n");
return -ENODEV;
}
for_each_child_of_node(nproot, np) {
if (of_property_read_bool(np, "rohm,no-regulator-enable-control"))
mark_hw_controlled(dev, np, reg_data, num_reg_data,
info);
ret = of_property_read_u32(np, "rohm,fb-pull-up-microvolt",
&uv);
if (ret) {
if (ret == -EINVAL)
continue;
else
goto err_out;
}
ret = setup_feedback_loop(dev, np, reg_data, num_reg_data, uv);
if (ret)
goto err_out;
}
of_node_put(nproot);
return 0;
err_out:
of_node_put(np);
of_node_put(nproot);
return ret;
}
static int bd718xx_probe(struct platform_device *pdev)
{
struct regmap *regmap;
struct regulator_config config = { 0 };
int i, j, err, omit_enable;
bool use_snvs;
struct bd718xx_regulator_data *reg_data;
unsigned int num_reg_data;
enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
const struct regulator_ops **swops, **hwops;
regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!regmap) {
dev_err(&pdev->dev, "No MFD driver data\n");
return -EINVAL;
}
switch (chip) {
case ROHM_CHIP_TYPE_BD71837:
reg_data = bd71837_regulators;
num_reg_data = ARRAY_SIZE(bd71837_regulators);
swops = &bd71837_swcontrol_ops[0];
hwops = &bd71837_hwcontrol_ops[0];
break;
case ROHM_CHIP_TYPE_BD71847:
reg_data = bd71847_regulators;
num_reg_data = ARRAY_SIZE(bd71847_regulators);
swops = &bd71847_swcontrol_ops[0];
hwops = &bd71847_hwcontrol_ops[0];
break;
default:
dev_err(&pdev->dev, "Unsupported chip type\n");
err = -EINVAL;
goto err;
}
/* Register LOCK release */
err = regmap_update_bits(regmap, BD718XX_REG_REGLOCK,
(REGLOCK_PWRSEQ | REGLOCK_VREG), 0);
if (err) {
dev_err(&pdev->dev, "Failed to unlock PMIC (%d)\n", err);
goto err;
} else {
dev_dbg(&pdev->dev, "Unlocked lock register 0x%x\n",
BD718XX_REG_REGLOCK);
}
use_snvs = of_property_read_bool(pdev->dev.parent->of_node,
"rohm,reset-snvs-powered");
/*
* Change the next stage from poweroff to be READY instead of SNVS
* for all reset types because OTP loading at READY will clear SEL
* bit allowing HW defaults for power rails to be used
*/
if (!use_snvs) {
err = regmap_update_bits(regmap, BD718XX_REG_TRANS_COND1,
BD718XX_ON_REQ_POWEROFF_MASK |
BD718XX_SWRESET_POWEROFF_MASK |
BD718XX_WDOG_POWEROFF_MASK |
BD718XX_KEY_L_POWEROFF_MASK,
BD718XX_POWOFF_TO_RDY);
if (err) {
dev_err(&pdev->dev, "Failed to change reset target\n");
goto err;
} else {
dev_dbg(&pdev->dev,
"Changed all resets from SVNS to READY\n");
}
}
config.dev = pdev->dev.parent;
config.regmap = regmap;
/*
* There are cases when we want to leave the enable-control for
* the HW state machine and use this driver only for voltage control.
* One special case is when we use PMIC_STBY_REQ line from SoC to PMIC
* in order to set the system to SUSPEND state.
*
* If regulator is taken under SW control the regulator state will not
* be affected by PMIC state machine - Eg. regulator is likely to stay
* on even in SUSPEND
*/
err = get_special_regulators(pdev->dev.parent, reg_data, num_reg_data,
&omit_enable);
if (err)
return err;
for (i = 0; i < num_reg_data; i++) {
struct regulator_desc *desc;
struct regulator_dev *rdev;
struct bd718xx_regulator_data *r;
int no_enable_control = omit_enable & (1 << i);
r = &reg_data[i];
desc = &r->desc;
if (no_enable_control)
desc->ops = hwops[i];
else
desc->ops = swops[i];
rdev = devm_regulator_register(&pdev->dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev,
"failed to register %s regulator\n",
desc->name);
err = PTR_ERR(rdev);
goto err;
}
/*
* Regulator register gets the regulator constraints and
* applies them (set_machine_constraints). This should have
* turned the control register(s) to correct values and we
* can now switch the control from PMIC state machine to the
* register interface
*
* At poweroff transition PMIC HW disables EN bit for
* regulators but leaves SEL bit untouched. So if state
* transition from POWEROFF is done to SNVS - then all power
* rails controlled by SW (having SEL bit set) stay disabled
* as EN is cleared. This will result boot failure if any
* crucial systems are powered by these rails. We don't
* enable SW control for crucial regulators if snvs state is
* used
*/
if (!no_enable_control && (!use_snvs ||
!rdev->constraints->always_on ||
!rdev->constraints->boot_on)) {
err = regmap_update_bits(regmap, r->init.reg,
r->init.mask, r->init.val);
if (err) {
dev_err(&pdev->dev,
"Failed to take control for (%s)\n",
desc->name);
goto err;
}
}
for (j = 0; j < r->additional_init_amnt; j++) {
err = regmap_update_bits(regmap,
r->additional_inits[j].reg,
r->additional_inits[j].mask,
r->additional_inits[j].val);
if (err) {
dev_err(&pdev->dev,
"Buck (%s) initialization failed\n",
desc->name);
goto err;
}
}
}
err:
return err;
}
static const struct platform_device_id bd718x7_pmic_id[] = {
{ "bd71837-pmic", ROHM_CHIP_TYPE_BD71837 },
{ "bd71847-pmic", ROHM_CHIP_TYPE_BD71847 },
{ },
};
MODULE_DEVICE_TABLE(platform, bd718x7_pmic_id);
static struct platform_driver bd718xx_regulator = {
.driver = {
.name = "bd718xx-pmic",
},
.probe = bd718xx_probe,
.id_table = bd718x7_pmic_id,
};
module_platform_driver(bd718xx_regulator);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
MODULE_DESCRIPTION("BD71837/BD71847 voltage regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bd718xx-pmic");
Reference in New Issue View Git Blame Copy Permalink