AXP20X datasheet lists the possible voltage settings for LDO4, so
it was implemented using a voltage table. Upon closer examination,
the valid voltages can be mapped into 3 linear ranges.
Move AXP20X LDO4 to use linear ranges. The supporting code can be
reused with later AXP8xx PMICs, which have a number of regulators
that have 2 linear ranges.
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
drivers/regulator/axp20x-regulator.c | 32 +++++++++++++++++---------------
1 file changed, 17 insertions(+), 15 deletions(-)
diff --git a/drivers/regulator/axp20x-regulator.c
b/drivers/regulator/axp20x-regulator.c
index f31d238e85e8..81f25383f2d5 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -106,8 +106,8 @@
.ops = &axp20x_ops_fixed
\
}
-#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask,
\
- _ereg, _emask)
\
+#define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages,
\
+ _vreg, _vmask, _ereg, _emask)
\
[_family##_##_id] = {
\
.name = #_id,
\
.supply_name = (_supply),
\
@@ -115,30 +115,25 @@
.regulators_node = of_match_ptr("regulators"),
\
.type = REGULATOR_VOLTAGE,
\
.id = _family##_##_id,
\
- .n_voltages = ARRAY_SIZE(_table),
\
+ .n_voltages = (_n_voltages),
\
.owner = THIS_MODULE,
\
.vsel_reg = (_vreg),
\
.vsel_mask = (_vmask),
\
.enable_reg = (_ereg),
\
.enable_mask = (_emask),
\
- .volt_table = (_table),
\
- .ops = &axp20x_ops_table,
\
+ .linear_ranges = (_ranges),
\
+ .n_linear_ranges = ARRAY_SIZE(_ranges),
\
+ .ops = &axp20x_ops_range,
\
}
-static const int axp20x_ldo4_data[] = { 1250000, 1300000, 1400000, 1500000,
1600000,
- 1700000, 1800000, 1900000, 2000000,
2500000,
- 2700000, 2800000, 3000000, 3100000,
3200000,
- 3300000 };
-
static struct regulator_ops axp20x_ops_fixed = {
.list_voltage = regulator_list_voltage_linear,
};
-static struct regulator_ops axp20x_ops_table = {
+static struct regulator_ops axp20x_ops_range = {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
- .list_voltage = regulator_list_voltage_table,
- .map_voltage = regulator_map_voltage_ascend,
+ .list_voltage = regulator_list_voltage_linear_range,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
@@ -159,6 +154,12 @@ static struct regulator_ops axp20x_ops_sw = {
.is_enabled = regulator_is_enabled_regmap,
};
+static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
+ REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
+ REGULATOR_LINEAR_RANGE(2500000, 0x9, 0xf, 100000),
+};
+
static const struct regulator_desc axp20x_regulators[] = {
AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
@@ -169,8 +170,9 @@ static const struct regulator_desc axp20x_regulators[] = {
AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
- AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
- AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
+ AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
+ 16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
+ 0x08),
AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
--
2.7.0
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