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-rw-r--r--drivers/regulator/bd718x7-regulator.c1843
1 files changed, 1843 insertions, 0 deletions
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
new file mode 100644
index 0000000000..c3fb05dce4
--- /dev/null
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -0,0 +1,1843 @@
+// 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, 0x1, 0x1, 0x1
+};
+
+/*
+ * 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, 0x1, 0x2, 0x2, 0x2
+};
+
+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, 0x1 };
+
+/*
+ * 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, 0x1 };
+
+/*
+ * 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, 0x1 };
+
+/*
+ * 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_bitfield = 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_bitfield = 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_bitfield = 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_bitfield = 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_bitfield = 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_bitfield = 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;
+
+ /* 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");
+ return -EINVAL;
+ }
+
+ /* Register LOCK release */
+ err = regmap_update_bits(regmap, BD718XX_REG_REGLOCK,
+ (REGLOCK_PWRSEQ | REGLOCK_VREG), 0);
+ if (err)
+ return dev_err_probe(&pdev->dev, err, "Failed to unlock PMIC\n");
+
+ 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)
+ return dev_err_probe(&pdev->dev, err,
+ "Failed to change reset target\n");
+
+ 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))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rdev),
+ "failed to register %s regulator\n",
+ desc->name);
+
+ /*
+ * 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)
+ return dev_err_probe(&pdev->dev, err,
+ "Failed to take control for (%s)\n",
+ desc->name);
+ }
+ 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)
+ return dev_err_probe(&pdev->dev, err,
+ "Buck (%s) initialization failed\n",
+ desc->name);
+ }
+ }
+
+ 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_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .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");