Hi,
Pawel Laszczak <pawell@xxxxxxxxxxx> writes:
> Please look at the changes in drivers/usb/common/common.c file.
> I'm going to add it as next patch to next version.
>
>
>>Pawel Laszczak <pawell@xxxxxxxxxxx> writes:
>>>>> +void cdns3_role_stop(struct cdns3 *cdns)
>>
>>>>> +static const char *const cdns3_mode[] = {
>>>>> + [USB_DR_MODE_UNKNOWN] = "unknown",
>>>>> + [USB_DR_MODE_OTG] = "otg",
>>>>> + [USB_DR_MODE_HOST] = "host",
>>>>> + [USB_DR_MODE_PERIPHERAL] = "device",
>>>>> +};
>>>>
>>>>don't we have a generic version of this under usb/common ?
>>>>
>>> Yes, there is a similar array, but it is defined also as static
>>> and there is no function for converting value to string.
>>> There is only function for converting string to value.
>>
>>right. You can add the missing interface generically instead of
>>duplicating the enumeration.
>>
>>> There is also:
>>> [USB_DR_MODE_UNKNOWN] = "",
>>> Instead of:
>>> [USB_DR_MODE_UNKNOWN] = "unknown",
>>>
>>> So, for USB_DR_MODE_UNKNOWN user will not see anything information.
>>
>>But that's what "unknown" means :-) We don't know the information.
>>
>
> ////// start
> commit 607754c60fabc43408f4f2de82d3560c72870787 (HEAD)
> Author: Pawel Laszczak <pawell@xxxxxxxxxxx>
> Date: Mon Jul 8 12:53:47 2019 +0200
>
> usb:common Added usb_get_dr_mode_from_string and usb_dr_mode_to_string.
This would read better as:
usb: common: Add usb_get_dr_mode_from_string and usb_dr_mode_to_string.
>
> Patch introduces new function usb_dr_mode_to_string for converting dual role
> mod to string and removes static from usb_dr_mode_to_string definition.
>
> Both changes have made to avoid duplication of code by cdns3 driver.
>
> diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
> index 18f5dcf58b0d..ab59954deff8 100644
> --- a/drivers/usb/common/common.c
> +++ b/drivers/usb/common/common.c
> @@ -118,13 +118,20 @@ static const char *const usb_dr_modes[] = {
> [USB_DR_MODE_OTG] = "otg",
> };
>
> -static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str)
> +/**
> + * usb_get_dr_mode_from_string - Convert string to dual role mode.
> + * @str: Pointer to the given string
> + *
> + * The function gets string and returns the correspondig enum usb_dr_mode.
> + */
> +enum usb_dr_mode usb_get_dr_mode_from_string(const char *str)
> {
> int ret;
>
> ret = match_string(usb_dr_modes, ARRAY_SIZE(usb_dr_modes), str);
> return (ret < 0) ? USB_DR_MODE_UNKNOWN : ret;
> }
> +EXPORT_SYMBOL_GPL(usb_get_dr_mode_from_string);
>
> enum usb_dr_mode usb_get_dr_mode(struct device *dev)
> {
> @@ -139,6 +146,21 @@ enum usb_dr_mode usb_get_dr_mode(struct device *dev)
> }
> EXPORT_SYMBOL_GPL(usb_get_dr_mode);
>
> +/**
> + * usb_dr_mode_to_string - Convert dual role mode to stringi.
s/stringi/string
> + * @dr_mode: Pointer to the given dual role mode
> + *
> + * The function gets enum usb_dr_mode, and returns the correspondig string.
> + */
> +const *char usb_dr_mode_to_string(const enum usb_dr_mode dr_mode)
> +{
> + if (dr_mode > USB_DR_MODE_UNKNOWN || dr_mode <= USB_DR_MODE_PERIPHERAL)
> + return usb_dr_modes[dr_mode];
> +
> + return usb_dr_modes[USB_DR_MODE_UNKNOWN];
> +}
> +EXPORT_SYMBOL_GPL(usb_dr_mode_to_string);
missing prototype in a header file.
--
balbi
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