On 08/06/2017 05:35 AM, Hans de Goede wrote:
On devicetree platforms the fusb302 dt-node will have a vbus regulator
property with a phandle to the regulator.
On ACPI platforms, there are no phandles and we need to get the vbus by a
system wide unique name. Add support for a new "fcs,vbus-regulator-name"
device-property which ACPI platform code can set to pass the name.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/staging/typec/fusb302/fusb302.c | 28 ++++++++++++++++++++++------
1 file changed, 22 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/typec/fusb302/fusb302.c b/drivers/staging/typec/fusb302/fusb302.c
index e1e08f57af99..c3bcc5484ade 100644
--- a/drivers/staging/typec/fusb302/fusb302.c
+++ b/drivers/staging/typec/fusb302/fusb302.c
@@ -1722,6 +1722,28 @@ static int fusb302_probe(struct i2c_client *client,
return -EPROBE_DEFER;
}
+ /*
+ * Devicetree platforms should get vbus from their dt-node.
+ * On ACPI platforms, we need to get the vbus by a system wide unique
+ * name, which is set in a device prop by the platform code.
+ */
+ if (device_property_read_string(dev, "fcs,vbus-regulator-name",
+ &name) == 0) {
Another property to be documented and approved.
Also, isn't there a better way to get regulator names for dt- and non-dt systems ?
This would apply to every driver supporting both and using regulators, which seems
awkward.
+ /*
+ * Use regulator_get_optional so that we can detect if we need
+ * to defer the probe rather then getting the dummy-regulator.
+ */
Wouldn't this apply to dt systems as well ?
+ chip->vbus = devm_regulator_get_optional(dev, name);
+ if (IS_ERR(chip->vbus)) {
+ ret = PTR_ERR(chip->vbus);
+ return (ret == -ENODEV) ? -EPROBE_DEFER : ret;
+ }
+ } else {
+ chip->vbus = devm_regulator_get(dev, "vbus");
+ if (IS_ERR(chip->vbus))
+ return PTR_ERR(chip->vbus);
+ }
+
You might also want to explain why you moved this code.
ret = tcpm_register_psy(chip->dev, &chip->tcpc_dev,
"fusb302-typec-source");
if (ret < 0)
@@ -1739,12 +1761,6 @@ static int fusb302_probe(struct i2c_client *client,
INIT_DELAYED_WORK(&chip->bc_lvl_handler, fusb302_bc_lvl_handler_work);
init_tcpc_dev(&chip->tcpc_dev);
- chip->vbus = devm_regulator_get(chip->dev, "vbus");
- if (IS_ERR(chip->vbus)) {
- ret = PTR_ERR(chip->vbus);
- goto destroy_workqueue;
- }
-
if (client->irq) {
chip->gpio_int_n_irq = client->irq;
} else {
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