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Date: Wed, 10 Apr 2019 00:10:39 +0800
From: Axel Lin <axel.lin@...ics.com>
To: Mark Brown <broonie@...nel.org>
Cc: Ying-Chun Liu <paul.liu@...aro.org>,
Dong Aisheng <aisheng.dong@....com>,
Liam Girdwood <lgirdwood@...il.com>,
linux-kernel@...r.kernel.org, Axel Lin <axel.lin@...ics.com>
Subject: [PATCH] regulator: anatop: Remove unneeded fields from struct anatop_regulator
These fields are only used in anatop_regulator_probe() so use local
variables instead. The *initdata is not used so can be removed.
The *anatop is renamed to *regmap for better readability.
Use u32 instead of int for the variables used as third argument of
of_property_read_u32().
Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
drivers/regulator/anatop-regulator.c | 63 ++++++++++++----------------
1 file changed, 27 insertions(+), 36 deletions(-)
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index d9d8155ed8cb..754739d004e5 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -23,18 +23,10 @@
#define LDO_FET_FULL_ON 0x1f
struct anatop_regulator {
- u32 control_reg;
- struct regmap *anatop;
- int vol_bit_shift;
- int vol_bit_width;
u32 delay_reg;
int delay_bit_shift;
int delay_bit_width;
- int min_bit_val;
- int min_voltage;
- int max_voltage;
struct regulator_desc rdesc;
- struct regulator_init_data *initdata;
bool bypass;
int sel;
};
@@ -55,7 +47,7 @@ static int anatop_regmap_set_voltage_time_sel(struct regulator_dev *reg,
* to calculate how many steps LDO need to
* ramp up, and how much delay needed. (us)
*/
- regmap_read(anatop_reg->anatop, anatop_reg->delay_reg, &val);
+ regmap_read(reg->regmap, anatop_reg->delay_reg, &val);
val = (val >> anatop_reg->delay_bit_shift) &
((1 << anatop_reg->delay_bit_width) - 1);
ret = (new_sel - old_sel) * (LDO_RAMP_UP_UNIT_IN_CYCLES <<
@@ -170,6 +162,13 @@ static int anatop_regulator_probe(struct platform_device *pdev)
struct anatop_regulator *sreg;
struct regulator_init_data *initdata;
struct regulator_config config = { };
+ struct regmap *regmap;
+ u32 control_reg;
+ u32 vol_bit_shift;
+ u32 vol_bit_width;
+ u32 min_bit_val;
+ u32 min_voltage;
+ u32 max_voltage;
int ret = 0;
u32 val;
@@ -192,48 +191,41 @@ static int anatop_regulator_probe(struct platform_device *pdev)
return -ENOMEM;
initdata->supply_regulator = "vin";
- sreg->initdata = initdata;
anatop_np = of_get_parent(np);
if (!anatop_np)
return -ENODEV;
- sreg->anatop = syscon_node_to_regmap(anatop_np);
+ regmap = syscon_node_to_regmap(anatop_np);
of_node_put(anatop_np);
- if (IS_ERR(sreg->anatop))
- return PTR_ERR(sreg->anatop);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
- ret = of_property_read_u32(np, "anatop-reg-offset",
- &sreg->control_reg);
+ ret = of_property_read_u32(np, "anatop-reg-offset", &control_reg);
if (ret) {
dev_err(dev, "no anatop-reg-offset property set\n");
return ret;
}
- ret = of_property_read_u32(np, "anatop-vol-bit-width",
- &sreg->vol_bit_width);
+ ret = of_property_read_u32(np, "anatop-vol-bit-width", &vol_bit_width);
if (ret) {
dev_err(dev, "no anatop-vol-bit-width property set\n");
return ret;
}
- ret = of_property_read_u32(np, "anatop-vol-bit-shift",
- &sreg->vol_bit_shift);
+ ret = of_property_read_u32(np, "anatop-vol-bit-shift", &vol_bit_shift);
if (ret) {
dev_err(dev, "no anatop-vol-bit-shift property set\n");
return ret;
}
- ret = of_property_read_u32(np, "anatop-min-bit-val",
- &sreg->min_bit_val);
+ ret = of_property_read_u32(np, "anatop-min-bit-val", &min_bit_val);
if (ret) {
dev_err(dev, "no anatop-min-bit-val property set\n");
return ret;
}
- ret = of_property_read_u32(np, "anatop-min-voltage",
- &sreg->min_voltage);
+ ret = of_property_read_u32(np, "anatop-min-voltage", &min_voltage);
if (ret) {
dev_err(dev, "no anatop-min-voltage property set\n");
return ret;
}
- ret = of_property_read_u32(np, "anatop-max-voltage",
- &sreg->max_voltage);
+ ret = of_property_read_u32(np, "anatop-max-voltage", &max_voltage);
if (ret) {
dev_err(dev, "no anatop-max-voltage property set\n");
return ret;
@@ -247,24 +239,23 @@ static int anatop_regulator_probe(struct platform_device *pdev)
of_property_read_u32(np, "anatop-delay-bit-shift",
&sreg->delay_bit_shift);
- rdesc->n_voltages = (sreg->max_voltage - sreg->min_voltage) / 25000 + 1
- + sreg->min_bit_val;
- rdesc->min_uV = sreg->min_voltage;
+ rdesc->n_voltages = (max_voltage - min_voltage) / 25000 + 1
+ + min_bit_val;
+ rdesc->min_uV = min_voltage;
rdesc->uV_step = 25000;
- rdesc->linear_min_sel = sreg->min_bit_val;
- rdesc->vsel_reg = sreg->control_reg;
- rdesc->vsel_mask = ((1 << sreg->vol_bit_width) - 1) <<
- sreg->vol_bit_shift;
+ rdesc->linear_min_sel = min_bit_val;
+ rdesc->vsel_reg = control_reg;
+ rdesc->vsel_mask = ((1 << vol_bit_width) - 1) << vol_bit_shift;
rdesc->min_dropout_uV = 125000;
config.dev = &pdev->dev;
config.init_data = initdata;
config.driver_data = sreg;
config.of_node = pdev->dev.of_node;
- config.regmap = sreg->anatop;
+ config.regmap = regmap;
/* Only core regulators have the ramp up delay configuration. */
- if (sreg->control_reg && sreg->delay_bit_width) {
+ if (control_reg && sreg->delay_bit_width) {
rdesc->ops = &anatop_core_rops;
ret = regmap_read(config.regmap, rdesc->vsel_reg, &val);
@@ -273,7 +264,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
return ret;
}
- sreg->sel = (val & rdesc->vsel_mask) >> sreg->vol_bit_shift;
+ sreg->sel = (val & rdesc->vsel_mask) >> vol_bit_shift;
if (sreg->sel == LDO_FET_FULL_ON) {
sreg->sel = 0;
sreg->bypass = true;
@@ -306,7 +297,7 @@ static int anatop_regulator_probe(struct platform_device *pdev)
anatop_rops.disable = regulator_disable_regmap;
anatop_rops.is_enabled = regulator_is_enabled_regmap;
- rdesc->enable_reg = sreg->control_reg;
+ rdesc->enable_reg = control_reg;
rdesc->enable_mask = BIT(enable_bit);
}
}
--
2.17.1
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