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Message-Id: <20230419-dynamic-vmon-v4-4-4d3734e62ada@skidata.com>
Date: Tue, 20 Jun 2023 22:02:57 +0200
From: Benjamin Bara <bbara93@...il.com>
To: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>
Cc: support.opensource@...semi.com,
DLG-Adam.Ward.opensource@...renesas.com,
Martin Fuzzey <martin.fuzzey@...wbird.group>,
linux-kernel@...r.kernel.org,
Matti Vaittinen <mazziesaccount@...il.com>,
Benjamin Bara <benjamin.bara@...data.com>
Subject: [PATCH RFC v4 04/13] regulator: bd718x7: implement
get_active_protections()
From: Benjamin Bara <benjamin.bara@...data.com>
This is required as the mon_disable_reg_set_higher workaround property
requires the ops to find out if it the monitor is set without the
device-tree being aware of it.
Signed-off-by: Benjamin Bara <benjamin.bara@...data.com>
---
drivers/regulator/bd718x7-regulator.c | 74 ++++++++++++++++++++++++++++-------
1 file changed, 60 insertions(+), 14 deletions(-)
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index b0b9938c20a1..fbf609d219fc 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -56,7 +56,7 @@
#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) \
+ _set_uvp, _set_ovp, _get_prot) \
static const struct regulator_ops name = { \
.enable = regulator_enable_regmap, \
.disable = regulator_disable_regmap, \
@@ -69,6 +69,7 @@ static const struct regulator_ops name = { \
.set_ramp_delay = (_set_ramp_delay), \
.set_under_voltage_protection = (_set_uvp), \
.set_over_voltage_protection = (_set_ovp), \
+ .get_active_protections = (_get_prot), \
}; \
\
static const struct regulator_ops BD718XX_HWOPNAME(name) = { \
@@ -81,6 +82,7 @@ static const struct regulator_ops BD718XX_HWOPNAME(name) = { \
.set_ramp_delay = (_set_ramp_delay), \
.set_under_voltage_protection = (_set_uvp), \
.set_over_voltage_protection = (_set_ovp), \
+ .get_active_protections = (_get_prot), \
} \
/*
@@ -457,6 +459,23 @@ static int bd718x7_xvp_sanity_check(struct regulator_dev *rdev, int lim_uV,
return 0;
}
+static int bd717x7_get_ldo_prot(struct regulator_dev *rdev, unsigned int *state)
+{
+ int ldo_offset = rdev->desc->id - BD718XX_LDO1;
+ int prot_bit = BD718XX_LDO1_VRMON80 << ldo_offset;
+ int ret;
+
+ ret = regmap_test_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2, prot_bit);
+ if (ret < 0)
+ return ret;
+
+ *state = REGULATOR_MONITOR_NONE;
+ if (ret)
+ *state = REGULATOR_MONITOR_UNDER_VOLTAGE;
+
+ return 0;
+}
+
static int bd718x7_set_ldo_uvp(struct regulator_dev *rdev, int lim_uV,
int severity, bool enable)
{
@@ -519,6 +538,33 @@ static int bd718x7_get_buck_uvp_info(int id, int *reg, int *bit)
return 0;
}
+static int bd717x7_get_buck_prot(struct regulator_dev *rdev, unsigned int *state)
+{
+ int ret, reg, bit;
+
+ ret = bd718x7_get_buck_uvp_info(rdev->desc->id, ®, &bit);
+ if (ret)
+ return ret;
+ ret = regmap_test_bits(rdev->regmap, reg, bit);
+ if (ret < 0)
+ return ret;
+
+ *state = REGULATOR_MONITOR_NONE;
+ if (ret)
+ *state = REGULATOR_MONITOR_UNDER_VOLTAGE;
+
+ ret = bd718x7_get_buck_ovp_info(rdev->desc->id, ®, &bit);
+ if (ret)
+ return ret;
+ ret = regmap_test_bits(rdev->regmap, reg, bit);
+ if (ret < 0)
+ return ret;
+ if (ret)
+ *state |= REGULATOR_MONITOR_OVER_VOLTAGE;
+
+ return 0;
+}
+
static int bd718x7_set_buck_uvp(struct regulator_dev *rdev, int lim_uV,
int severity, bool enable)
{
@@ -566,7 +612,7 @@ 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);
+ bd718x7_set_ldo_uvp, NULL, bd717x7_get_ldo_prot);
/* BD71847 and BD71850 LDO 5 is by default OFF at RUN state */
static const struct regulator_ops bd718xx_ldo5_ops_hwstate = {
@@ -582,27 +628,27 @@ BD718XX_OPS(bd718xx_pickable_range_buck_ops,
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);
+ bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
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);
+ NULL, bd717x7_get_ldo_prot);
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);
+ NULL, bd717x7_get_ldo_prot);
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);
+ NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
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);
+ NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
/*
* OPS for BD71837
@@ -611,34 +657,34 @@ 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);
+ bd718x7_set_ldo_uvp, NULL, bd717x7_get_ldo_prot);
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);
+ bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
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);
+ NULL, bd717x7_get_ldo_prot);
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);
+ NULL, bd717x7_get_ldo_prot);
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);
+ NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
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);
+ NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
/*
* 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
@@ -662,7 +708,7 @@ 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);
+ bd718x7_set_buck_ovp, bd717x7_get_buck_prot);
--
2.34.1
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