Add support for using cable names. Enables other drivers to register interest
and get notified using extcon provided notifier call backs.
Signed-off-by: George Cherian <george.cherian@xxxxxx>
---
Documentation/devicetree/bindings/extcon/extcon-gpio.txt | 2 ++
drivers/extcon/extcon-gpio.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/extcon/extcon-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-gpio.txt
index 30aa2e1..2c9d29f 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-gpio.txt
+++ b/Documentation/devicetree/bindings/extcon/extcon-gpio.txt
@@ -7,6 +7,7 @@ Required Properties:
- compatible: should be:
* "linux,extcon-gpio"
- gpios: specifies the gpio pin used.
+ - cable-name: Name of the cable used.
Optional Properties:
- debounce: Debounce time for GPIO IRQ in ms
@@ -18,4 +19,5 @@ Eg:
compatible = "linux,extcon-gpio";
gpios = <&gpio3 12 GPIO_ACTIVE_HIGH>;
debounce = <20>;
+ cable-name = "USB-HOST";
};
diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 3839749..c0ab8e7 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -42,6 +42,7 @@ struct gpio_extcon_data {
struct delayed_work work;
unsigned long debounce_jiffies;
bool check_on_resume;
+ const char *cable_name[1];
};
static void gpio_extcon_work(struct work_struct *work)
@@ -111,6 +112,9 @@ static int gpio_extcon_probe(struct platform_device *pdev)
of_property_read_u32(np, "debounce", &debounce);
irq = gpiod_to_irq(extcon_data->gpiod);
irq_flags = irq_get_trigger_type(irq);
+ of_property_read_string_index(np, "cable-name", 0,
+ extcon_data->cable_name);
+ extcon_data->edev->supported_cable = extcon_data->cable_name;
} else {
if (!pdata)
return -EBUSY;
--
1.8.3.1
--
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