Hi,
On Mon, 2015-02-02 at 12:21 +0200, Roger Quadros wrote:
> This driver observes the USB ID pin connected over a GPIO and
> updates the USB cable extcon states accordingly.
>
> The existing GPIO extcon driver is not suitable for this purpose
> as it needs to be taught to understand USB cable states and it
> can't handle more than one cable per instance.
>
> For the USB case we need to handle 2 cable states.
> 1) USB (attach/detach)
> 2) USB-HOST (attach/detach)
>
> This driver can be easily updated in the future to handle VBUS
> events in case it happens to be available on GPIO for any platform.
>
> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
> ---
> v4:
> - got rid of id_irqwake flag. Fail if enable/disable_irq_wake() fails
> - changed host cable name to "USB-HOST"
I am sorry that I am getting a bit little late into this.
Isn't supposed that we have to use strings defined in
const char extcon_cable_name[][]?
> +
> +/* List of detectable cables */
> +enum {
> + EXTCON_CABLE_USB = 0,
> + EXTCON_CABLE_USB_HOST,
> +
Same here: duplicated with enum extcon_cable_name
> + EXTCON_CABLE_END,
> +};
> +
> +static const char *usb_extcon_cable[] = {
> + [EXTCON_CABLE_USB] = "USB",
> + [EXTCON_CABLE_USB_HOST] = "USB-HOST",
> + NULL,
> +};
>
<snip>
> +
> +static int usb_extcon_probe(struct platform_device *pdev)
> +{
>
<snip>
> +
> + ret = devm_request_threaded_irq(dev, info->id_irq, NULL,
> + usb_irq_handler,
> + IRQF_TRIGGER_RISING |
> + IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
Shouldn't triggers be defined in DTS files?
Regards,
Ivan
>
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