Hi Mark,
Thanks for reviewing the changes!
On 2021-09-17 21:08, Mark Brown wrote:
On Fri, Sep 17, 2021 at 04:15:37PM +0530, Satya Priya wrote:
+static int pm8008_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ struct pm8008_regulator *pm8008_reg = rdev_get_drvdata(rdev);
+ int rc;
+ u8 reg;
+
+ rc = pm8008_read(pm8008_reg->regmap,
+ LDO_ENABLE_REG(pm8008_reg->base), ®, 1);
+ if (rc < 0) {
+ pr_err("failed to read enable reg rc=%d\n", rc);
+ return rc;
+ }
+
+ return !!(reg & ENABLE_BIT);
+}
This could just be regulator_is_enabled_regmap(). There's also a lot
of
instances in the driver where it's using pr_err() not dev_err() (and
similarly for the debug prints).
Okay, I'll use the helper regulator_is_enabled_regmap() here and remove
this completely.
+
+static int pm8008_regulator_enable(struct regulator_dev *rdev)
+{
+ struct pm8008_regulator *pm8008_reg = rdev_get_drvdata(rdev);
+ int rc, current_uv, delay_us, delay_ms, retry_count = 10;
+ u8 reg;
This is the regmap helper.
Okay, I'll use regulator_enable_regmap().
+ /*
+ * Wait for the VREG_READY status bit to be set using a timeout
delay
+ * calculated from the current commanded voltage.
+ */
+ delay_us = STARTUP_DELAY_USEC
+ + DIV_ROUND_UP(current_uv, pm8008_reg->step_rate);
+ delay_ms = DIV_ROUND_UP(delay_us, 1000);
Set poll_enable_time and implement get_status() then this will be
handled by the core.
Anyway I will be removing this API.
+static int pm8008_regulator_disable(struct regulator_dev *rdev)
+{
Use the regmap helper.
Ok, I'll use regulator_disable_regmap.
+ rc = pm8008_write_voltage(pm8008_reg, min_uv, max_uv);
+ if (rc < 0)
+ return rc;
This is the only place where write_voltage() is called, may as well
just
inline it.
Okay.
+ init_voltage = -EINVAL;
+ of_property_read_u32(reg_node, "qcom,init-voltage", &init_voltage);
Why does this property exist and if it's needed why is it specific to
this device? It looks like the device allows you to read the voltage
on
startup from the regmap.
I think it is not necessary, will remove it.
+ init_data = of_get_regulator_init_data(dev, reg_node,
+ &pm8008_reg->rdesc);
+ if (init_data == NULL) {
+ dev_err(dev, "%s: failed to get regulator data\n", name);
+ return -ENODATA;
+ }
+ if (!init_data->constraints.name) {
+ dev_err(dev, "%s: regulator name missing\n", name);
+ return -EINVAL;
+ }
Just let the core find the init data for you, there is no reason to
insist on a system provided name - that is an entirely optional
property
for systems to use, there is no reason for a regulator driver to care.
OK, I will remove this if check.
+ init_data->constraints.input_uV = init_data->constraints.max_uV;
+ init_data->constraints.valid_ops_mask |= REGULATOR_CHANGE_STATUS
+ | REGULATOR_CHANGE_VOLTAGE;
This is absolutely not something that a regulator driver should be
doing, the whole point with constraints is that they come from the
machine.
Okay I will remove this.
+static int pm8008_parse_regulator(struct regmap *regmap, struct
device *dev)
+{
+ int rc = 0;
+ const char *name;
+ struct device_node *child;
+ struct pm8008_regulator *pm8008_reg;
+
+ /* parse each subnode and register regulator for regulator child */
+ for_each_available_child_of_node(dev->of_node, child) {
+ pm8008_reg = devm_kzalloc(dev, sizeof(*pm8008_reg), GFP_KERNEL);
+ if (!pm8008_reg)
You shouldn't be doing this, just unconditionally register all the
regulators supported by the chip. If they don't appear in the DT
that's
totally fine - it gives read only access which can be useful for
diagnostics.
Okay will remove this check as well.
-Satya Priya.
