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![Matti Vaittinen](/assets/img/avatar_default.png)
The ROHM PMIC regulator drivers only need the regmap pointer from the parent device. Regmap can be obtained via dev_get_regmap() so do not require parent to populate driver data for that. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Link: https://lore.kernel.org/r/20210107122355.GA35080@localhost.localdomain Signed-off-by: Mark Brown <broonie@kernel.org>
1733 lines
51 KiB
C
1733 lines
51 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2018 ROHM Semiconductors
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// bd71837-regulator.c ROHM BD71837MWV/BD71847MWV regulator driver
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/mfd/rohm-bd718x7.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/slab.h>
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/* Typical regulator startup times as per data sheet in uS */
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#define BD71847_BUCK1_STARTUP_TIME 144
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#define BD71847_BUCK2_STARTUP_TIME 162
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#define BD71847_BUCK3_STARTUP_TIME 162
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#define BD71847_BUCK4_STARTUP_TIME 240
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#define BD71847_BUCK5_STARTUP_TIME 270
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#define BD71847_BUCK6_STARTUP_TIME 200
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#define BD71847_LDO1_STARTUP_TIME 440
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#define BD71847_LDO2_STARTUP_TIME 370
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#define BD71847_LDO3_STARTUP_TIME 310
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#define BD71847_LDO4_STARTUP_TIME 400
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#define BD71847_LDO5_STARTUP_TIME 530
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#define BD71847_LDO6_STARTUP_TIME 400
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#define BD71837_BUCK1_STARTUP_TIME 160
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#define BD71837_BUCK2_STARTUP_TIME 180
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#define BD71837_BUCK3_STARTUP_TIME 180
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#define BD71837_BUCK4_STARTUP_TIME 180
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#define BD71837_BUCK5_STARTUP_TIME 160
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#define BD71837_BUCK6_STARTUP_TIME 240
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#define BD71837_BUCK7_STARTUP_TIME 220
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#define BD71837_BUCK8_STARTUP_TIME 200
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#define BD71837_LDO1_STARTUP_TIME 440
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#define BD71837_LDO2_STARTUP_TIME 370
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#define BD71837_LDO3_STARTUP_TIME 310
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#define BD71837_LDO4_STARTUP_TIME 400
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#define BD71837_LDO5_STARTUP_TIME 310
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#define BD71837_LDO6_STARTUP_TIME 400
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#define BD71837_LDO7_STARTUP_TIME 530
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/*
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* BD718(37/47/50) have two "enable control modes". ON/OFF can either be
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* controlled by software - or by PMIC internal HW state machine. Whether
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* regulator should be under SW or HW control can be defined from device-tree.
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* Let's provide separate ops for regulators to use depending on the "enable
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* control mode".
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*/
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#define BD718XX_HWOPNAME(swopname) swopname##_hwcontrol
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#define BD718XX_OPS(name, _list_voltage, _map_voltage, _set_voltage_sel, \
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_get_voltage_sel, _set_voltage_time_sel, _set_ramp_delay) \
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static const struct regulator_ops name = { \
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.enable = regulator_enable_regmap, \
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.disable = regulator_disable_regmap, \
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.is_enabled = regulator_is_enabled_regmap, \
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.list_voltage = (_list_voltage), \
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.map_voltage = (_map_voltage), \
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.set_voltage_sel = (_set_voltage_sel), \
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.get_voltage_sel = (_get_voltage_sel), \
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.set_voltage_time_sel = (_set_voltage_time_sel), \
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.set_ramp_delay = (_set_ramp_delay), \
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}; \
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\
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static const struct regulator_ops BD718XX_HWOPNAME(name) = { \
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.is_enabled = always_enabled_by_hwstate, \
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.list_voltage = (_list_voltage), \
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.map_voltage = (_map_voltage), \
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.set_voltage_sel = (_set_voltage_sel), \
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.get_voltage_sel = (_get_voltage_sel), \
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.set_voltage_time_sel = (_set_voltage_time_sel), \
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.set_ramp_delay = (_set_ramp_delay), \
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} \
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/*
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* BUCK1/2/3/4
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* BUCK1RAMPRATE[1:0] BUCK1 DVS ramp rate setting
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* 00: 10.00mV/usec 10mV 1uS
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* 01: 5.00mV/usec 10mV 2uS
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* 10: 2.50mV/usec 10mV 4uS
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* 11: 1.25mV/usec 10mV 8uS
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*/
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static int bd718xx_buck1234_set_ramp_delay(struct regulator_dev *rdev,
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int ramp_delay)
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{
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int id = rdev_get_id(rdev);
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unsigned int ramp_value;
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dev_dbg(&rdev->dev, "Buck[%d] Set Ramp = %d\n", id + 1,
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ramp_delay);
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switch (ramp_delay) {
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case 1 ... 1250:
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ramp_value = BUCK_RAMPRATE_1P25MV;
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break;
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case 1251 ... 2500:
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ramp_value = BUCK_RAMPRATE_2P50MV;
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break;
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case 2501 ... 5000:
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ramp_value = BUCK_RAMPRATE_5P00MV;
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break;
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case 5001 ... 10000:
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ramp_value = BUCK_RAMPRATE_10P00MV;
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break;
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default:
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ramp_value = BUCK_RAMPRATE_10P00MV;
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dev_err(&rdev->dev,
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"%s: ramp_delay: %d not supported, setting 10000mV//us\n",
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rdev->desc->name, ramp_delay);
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}
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return regmap_update_bits(rdev->regmap, BD718XX_REG_BUCK1_CTRL + id,
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BUCK_RAMPRATE_MASK, ramp_value << 6);
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}
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/* These functions are used when regulators are under HW state machine control.
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* We assume PMIC is in RUN state because SW running and able to query the
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* status. Most of the regulators have fixed ON or OFF state at RUN/IDLE so for
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* them we just return a constant. BD71837 BUCK3 and BUCK4 are exceptions as
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* they support configuring the ON/OFF state for RUN.
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*
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* Note for next hacker - these PMICs have a register where the HW state can be
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* read. If assuming RUN appears to be false in your use-case - you can
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* implement state reading (although that is not going to be atomic) before
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* returning the enable state.
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*/
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static int always_enabled_by_hwstate(struct regulator_dev *rdev)
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{
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return 1;
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}
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static int never_enabled_by_hwstate(struct regulator_dev *rdev)
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{
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return 0;
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}
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static int bd71837_get_buck34_enable_hwctrl(struct regulator_dev *rdev)
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{
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int ret;
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unsigned int val;
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ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
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if (ret)
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return ret;
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return !!(BD718XX_BUCK_RUN_ON & val);
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}
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/*
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* On BD71837 (not on BD71847, BD71850, ...)
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* Bucks 1 to 4 support DVS. PWM mode is used when voltage is changed.
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* Bucks 5 to 8 and LDOs can use PFM and must be disabled when voltage
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* is changed. Hence we return -EBUSY for these if voltage is changed
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* when BUCK/LDO is enabled.
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*
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* On BD71847, BD71850, ... The LDO voltage can be changed when LDO is
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* enabled. But if voltage is increased the LDO power-good monitoring
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* must be disabled for the duration of changing + 1mS to ensure voltage
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* has reached the higher level before HW does next under voltage detection
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* cycle.
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*/
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static int bd71837_set_voltage_sel_restricted(struct regulator_dev *rdev,
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unsigned int sel)
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{
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if (rdev->desc->ops->is_enabled(rdev))
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return -EBUSY;
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return regulator_set_voltage_sel_regmap(rdev, sel);
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}
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static void voltage_change_done(struct regulator_dev *rdev, unsigned int sel,
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unsigned int *mask)
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{
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int ret;
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if (*mask) {
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/*
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* Let's allow scheduling as we use I2C anyways. We just need to
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* guarantee minimum of 1ms sleep - it shouldn't matter if we
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* exceed it due to the scheduling.
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*/
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msleep(1);
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/*
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* Note for next hacker. The PWRGOOD should not be masked on
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* BD71847 so we will just unconditionally enable detection
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* when voltage is set.
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* If someone want's to disable PWRGOOD he must implement
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* caching and restoring the old value here. I am not
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* aware of such use-cases so for the sake of the simplicity
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* we just always enable PWRGOOD here.
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*/
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ret = regmap_update_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2,
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*mask, 0);
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if (ret)
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dev_err(&rdev->dev,
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"Failed to re-enable voltage monitoring (%d)\n",
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ret);
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}
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}
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static int voltage_change_prepare(struct regulator_dev *rdev, unsigned int sel,
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unsigned int *mask)
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{
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int ret;
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*mask = 0;
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if (rdev->desc->ops->is_enabled(rdev)) {
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int now, new;
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now = rdev->desc->ops->get_voltage_sel(rdev);
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if (now < 0)
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return now;
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now = rdev->desc->ops->list_voltage(rdev, now);
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if (now < 0)
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return now;
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new = rdev->desc->ops->list_voltage(rdev, sel);
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if (new < 0)
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return new;
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/*
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* If we increase LDO voltage when LDO is enabled we need to
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* disable the power-good detection until voltage has reached
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* the new level. According to HW colleagues the maximum time
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* it takes is 1000us. I assume that on systems with light load
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* this might be less - and we could probably use DT to give
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* system specific delay value if performance matters.
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*
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* Well, knowing we use I2C here and can add scheduling delays
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* I don't think it is worth the hassle and I just add fixed
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* 1ms sleep here (and allow scheduling). If this turns out to
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* be a problem we can change it to delay and make the delay
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* time configurable.
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*/
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if (new > now) {
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int ldo_offset = rdev->desc->id - BD718XX_LDO1;
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*mask = BD718XX_LDO1_VRMON80 << ldo_offset;
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ret = regmap_update_bits(rdev->regmap,
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BD718XX_REG_MVRFLTMASK2,
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*mask, *mask);
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if (ret) {
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dev_err(&rdev->dev,
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"Failed to stop voltage monitoring\n");
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return ret;
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}
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}
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}
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return 0;
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}
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static int bd718xx_set_voltage_sel_restricted(struct regulator_dev *rdev,
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unsigned int sel)
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{
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int ret;
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int mask;
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ret = voltage_change_prepare(rdev, sel, &mask);
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if (ret)
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return ret;
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ret = regulator_set_voltage_sel_regmap(rdev, sel);
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voltage_change_done(rdev, sel, &mask);
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return ret;
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}
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static int bd718xx_set_voltage_sel_pickable_restricted(
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struct regulator_dev *rdev, unsigned int sel)
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{
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int ret;
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int mask;
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ret = voltage_change_prepare(rdev, sel, &mask);
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if (ret)
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return ret;
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ret = regulator_set_voltage_sel_pickable_regmap(rdev, sel);
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voltage_change_done(rdev, sel, &mask);
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return ret;
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}
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static int bd71837_set_voltage_sel_pickable_restricted(
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struct regulator_dev *rdev, unsigned int sel)
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{
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if (rdev->desc->ops->is_enabled(rdev))
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return -EBUSY;
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return regulator_set_voltage_sel_pickable_regmap(rdev, sel);
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}
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/*
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* OPS common for BD71847 and BD71850
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*/
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BD718XX_OPS(bd718xx_pickable_range_ldo_ops,
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regulator_list_voltage_pickable_linear_range, NULL,
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bd718xx_set_voltage_sel_pickable_restricted,
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regulator_get_voltage_sel_pickable_regmap, NULL, NULL);
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/* BD71847 and BD71850 LDO 5 is by default OFF at RUN state */
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static const struct regulator_ops bd718xx_ldo5_ops_hwstate = {
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.is_enabled = never_enabled_by_hwstate,
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.list_voltage = regulator_list_voltage_pickable_linear_range,
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.set_voltage_sel = bd718xx_set_voltage_sel_pickable_restricted,
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.get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
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};
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BD718XX_OPS(bd718xx_pickable_range_buck_ops,
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regulator_list_voltage_pickable_linear_range, NULL,
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regulator_set_voltage_sel_pickable_regmap,
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regulator_get_voltage_sel_pickable_regmap,
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regulator_set_voltage_time_sel, NULL);
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BD718XX_OPS(bd718xx_ldo_regulator_ops, regulator_list_voltage_linear_range,
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NULL, bd718xx_set_voltage_sel_restricted,
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regulator_get_voltage_sel_regmap, NULL, NULL);
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BD718XX_OPS(bd718xx_ldo_regulator_nolinear_ops, regulator_list_voltage_table,
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NULL, bd718xx_set_voltage_sel_restricted,
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regulator_get_voltage_sel_regmap, NULL, NULL);
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BD718XX_OPS(bd718xx_buck_regulator_ops, regulator_list_voltage_linear_range,
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NULL, regulator_set_voltage_sel_regmap,
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regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
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NULL);
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BD718XX_OPS(bd718xx_buck_regulator_nolinear_ops, regulator_list_voltage_table,
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regulator_map_voltage_ascend, regulator_set_voltage_sel_regmap,
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regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
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NULL);
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/*
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* OPS for BD71837
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*/
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BD718XX_OPS(bd71837_pickable_range_ldo_ops,
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regulator_list_voltage_pickable_linear_range, NULL,
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bd71837_set_voltage_sel_pickable_restricted,
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regulator_get_voltage_sel_pickable_regmap, NULL, NULL);
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BD718XX_OPS(bd71837_pickable_range_buck_ops,
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regulator_list_voltage_pickable_linear_range, NULL,
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bd71837_set_voltage_sel_pickable_restricted,
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regulator_get_voltage_sel_pickable_regmap,
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regulator_set_voltage_time_sel, NULL);
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BD718XX_OPS(bd71837_ldo_regulator_ops, regulator_list_voltage_linear_range,
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NULL, bd71837_set_voltage_sel_restricted,
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regulator_get_voltage_sel_regmap, NULL, NULL);
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BD718XX_OPS(bd71837_ldo_regulator_nolinear_ops, regulator_list_voltage_table,
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NULL, bd71837_set_voltage_sel_restricted,
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regulator_get_voltage_sel_regmap, NULL, NULL);
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BD718XX_OPS(bd71837_buck_regulator_ops, regulator_list_voltage_linear_range,
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NULL, bd71837_set_voltage_sel_restricted,
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regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
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NULL);
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BD718XX_OPS(bd71837_buck_regulator_nolinear_ops, regulator_list_voltage_table,
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regulator_map_voltage_ascend, bd718xx_set_voltage_sel_restricted,
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regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
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NULL);
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/*
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* BD71837 bucks 3 and 4 support defining their enable/disable state also
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* when buck enable state is under HW state machine control. In that case the
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* bit [2] in CTRL register is used to indicate if regulator should be ON.
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*/
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static const struct regulator_ops bd71837_buck34_ops_hwctrl = {
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.is_enabled = bd71837_get_buck34_enable_hwctrl,
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.list_voltage = regulator_list_voltage_linear_range,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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.set_ramp_delay = bd718xx_buck1234_set_ramp_delay,
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};
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/*
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* OPS for all of the ICs - BD718(37/47/50)
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*/
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BD718XX_OPS(bd718xx_dvs_buck_regulator_ops, regulator_list_voltage_linear_range,
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NULL, regulator_set_voltage_sel_regmap,
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regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel,
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bd718xx_buck1234_set_ramp_delay);
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/*
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* BD71837 BUCK1/2/3/4
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* BD71847 BUCK1/2
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* 0.70 to 1.30V (10mV step)
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*/
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static const struct linear_range bd718xx_dvs_buck_volts[] = {
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REGULATOR_LINEAR_RANGE(700000, 0x00, 0x3C, 10000),
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REGULATOR_LINEAR_RANGE(1300000, 0x3D, 0x3F, 0),
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};
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/*
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* BD71837 BUCK5
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* 0.7V to 1.35V (range 0)
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* and
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* 0.675 to 1.325 (range 1)
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*/
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static const struct linear_range bd71837_buck5_volts[] = {
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/* Ranges when VOLT_SEL bit is 0 */
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REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000),
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REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000),
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REGULATOR_LINEAR_RANGE(1200000, 0x06, 0x07, 150000),
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/* Ranges when VOLT_SEL bit is 1 */
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REGULATOR_LINEAR_RANGE(675000, 0x0, 0x3, 100000),
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REGULATOR_LINEAR_RANGE(1025000, 0x4, 0x5, 50000),
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REGULATOR_LINEAR_RANGE(1175000, 0x6, 0x7, 150000),
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};
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/*
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* Range selector for first 3 linear ranges is 0x0
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* and 0x1 for last 3 ranges.
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*/
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static const unsigned int bd71837_buck5_volt_range_sel[] = {
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0x0, 0x0, 0x0, 0x80, 0x80, 0x80
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};
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/*
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* BD71847 BUCK3
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*/
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static const struct linear_range bd71847_buck3_volts[] = {
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/* Ranges when VOLT_SEL bits are 00 */
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REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000),
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REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000),
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REGULATOR_LINEAR_RANGE(1200000, 0x06, 0x07, 150000),
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/* Ranges when VOLT_SEL bits are 01 */
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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;
|
||
};
|
||
|
||
/*
|
||
* 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,
|
||
.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,
|
||
.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,
|
||
.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,
|
||
.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,
|
||
.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,
|
||
.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 = ®_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 = ®_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");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:bd718xx-pmic");
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