[PATCH v2 1/7] regulator: qcom-labibb: Implement voltage selector ops

AngeloGioacchino Del Regno
2021-01-13T19:43:15Z

Implement {get,set}_voltage_sel, list_voltage, map_voltage with
the useful regulator regmap helpers in order to be able to manage
the voltage of LAB (positive) and IBB (negative) regulators.

In particular, the supported ranges are the following:
- LAB (pos): 4600mV to 6100mV with 100mV stepping,
- IBB (neg): -7700mV to -1400mV with 100mV stepping.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
---
drivers/regulator/qcom-labibb-regulator.c | 28 +++++++++++++++++++++++
1 file changed, 28 insertions(+)

diff --git a/drivers/regulator/qcom-labibb-regulator.c b/drivers/regulator/qcom-labibb-regulator.c
index 8ccf572394a2..9f51c96f16fb 100644
--- a/drivers/regulator/qcom-labibb-regulator.c
+++ b/drivers/regulator/qcom-labibb-regulator.c
@@ -19,6 +19,12 @@
#define PMI8998_IBB_REG_BASE 0xdc00

#define REG_LABIBB_STATUS1 0x08
+
+#define REG_LABIBB_VOLTAGE 0x41
+ #define LABIBB_VOLTAGE_OVERRIDE_EN BIT(7)
+ #define LAB_VOLTAGE_SET_MASK GENMASK(3, 0)
+ #define IBB_VOLTAGE_SET_MASK GENMASK(5, 0)
+
#define REG_LABIBB_ENABLE_CTL 0x46
#define LABIBB_STATUS1_VREG_OK_BIT BIT(7)
#define LABIBB_CONTROL_ENABLE BIT(7)
@@ -51,6 +57,10 @@ static const struct regulator_ops qcom_labibb_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
};

static const struct regulator_desc pmi8998_lab_desc = {
@@ -59,9 +69,18 @@ static const struct regulator_desc pmi8998_lab_desc = {
.enable_val = LABIBB_CONTROL_ENABLE,
.enable_time = LAB_ENABLE_TIME,
.poll_enabled_time = LABIBB_POLL_ENABLED_TIME,
+ .vsel_reg = (PMI8998_LAB_REG_BASE + REG_LABIBB_VOLTAGE),
+ .vsel_mask = LAB_VOLTAGE_SET_MASK,
+ .apply_reg = (PMI8998_LAB_REG_BASE + REG_LABIBB_VOLTAGE),
+ .apply_bit = LABIBB_VOLTAGE_OVERRIDE_EN,
.off_on_delay = LABIBB_OFF_ON_DELAY,
.owner = THIS_MODULE,
.type = REGULATOR_VOLTAGE,
+ .linear_ranges = (struct linear_range[]) {
+ REGULATOR_LINEAR_RANGE(4600000, 0, 15, 100000),
+ },
+ .n_linear_ranges = 1,
+ .n_voltages = 16,
.ops = &qcom_labibb_ops,
};

@@ -71,9 +90,18 @@ static const struct regulator_desc pmi8998_ibb_desc = {
.enable_val = LABIBB_CONTROL_ENABLE,
.enable_time = IBB_ENABLE_TIME,
.poll_enabled_time = LABIBB_POLL_ENABLED_TIME,
+ .vsel_reg = (PMI8998_IBB_REG_BASE + REG_LABIBB_VOLTAGE),
+ .vsel_mask = IBB_VOLTAGE_SET_MASK,
+ .apply_reg = (PMI8998_IBB_REG_BASE + REG_LABIBB_VOLTAGE),
+ .apply_bit = LABIBB_VOLTAGE_OVERRIDE_EN,
.off_on_delay = LABIBB_OFF_ON_DELAY,
.owner = THIS_MODULE,
.type = REGULATOR_VOLTAGE,
+ .linear_ranges = (struct linear_range[]) {
+ REGULATOR_LINEAR_RANGE(1400000, 0, 63, 100000),
+ },
+ .n_linear_ranges = 1,
+ .n_voltages = 64,
.ops = &qcom_labibb_ops,
};

--
2.29.2