From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Pawel Laszczak <pawell@cadence.com>,
"devicetree\@vger.kernel.org" <devicetree@vger.kernel.org>
Cc: "gregkh\@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-usb\@vger.kernel.org" <linux-usb@vger.kernel.org>,
"hdegoede\@redhat.com" <hdegoede@redhat.com>,
"heikki.krogerus\@linux.intel.com"
<heikki.krogerus@linux.intel.com>,
"robh+dt\@kernel.org" <robh+dt@kernel.org>,
"rogerq\@ti.com" <rogerq@ti.com>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"jbergsagel\@ti.com" <jbergsagel@ti.com>,
"nsekhar\@ti.com" <nsekhar@ti.com>, "nm\@ti.com" <nm@ti.com>,
Suresh Punnoose <sureshp@cadence.com>,
"peter.chen\@nxp.com" <peter.chen@nxp.com>,
Jayshri Dajiram Pawar <jpawar@cadence.com>,
Rahul Kumar <kurahul@cadence.com>
Subject: RE: [PATCH v9 5/6] usb:cdns3 Add Cadence USB3 DRD Driver
Date: Mon, 08 Jul 2019 14:15:42 +0300 [thread overview]
Message-ID: <874l3wn5ep.fsf@linux.intel.com> (raw)
In-Reply-To: <BYAPR07MB4709E5BA041BBDDB70E69F62DDF60@BYAPR07MB4709.namprd07.prod.outlook.com>
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Hi,
Pawel Laszczak <pawell@cadence.com> 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@cadence.com> 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@cadence.com>
> 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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next prev parent reply other threads:[~2019-07-08 11:15 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-05 10:57 [PATCH v9 0/6] Introduced new Cadence USBSS DRD Driver Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 1/6] dt-bindings: add binding for USBSS-DRD controller Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 2/6] usb:gadget Separated decoding functions from dwc3 driver Pawel Laszczak
2019-07-05 11:27 ` Greg KH
2019-07-05 11:39 ` Pawel Laszczak
2019-07-05 11:49 ` Greg KH
2019-07-05 12:03 ` Pawel Laszczak
2019-07-05 11:39 ` Felipe Balbi
2019-07-05 11:44 ` Pawel Laszczak
2019-08-07 10:17 ` Roger Quadros
2019-08-07 10:22 ` Felipe Balbi
2019-08-08 3:07 ` Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 3/6] usb:gadget Patch simplify usb_decode_set_clear_feature function Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 4/6] usb:gadget Simplify usb_decode_get_set_descriptor function Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 5/6] usb:cdns3 Add Cadence USB3 DRD Driver Pawel Laszczak
2019-07-05 11:55 ` Felipe Balbi
2019-07-07 17:56 ` Pawel Laszczak
2019-07-08 6:29 ` Felipe Balbi
2019-07-08 10:59 ` Pawel Laszczak
2019-07-08 11:15 ` Felipe Balbi [this message]
2019-07-08 11:45 ` Pawel Laszczak
2019-07-08 11:59 ` Felipe Balbi
2019-07-08 12:39 ` Pawel Laszczak
2019-07-09 4:23 ` Pawel Laszczak
2019-07-09 6:36 ` Felipe Balbi
2019-07-09 7:07 ` Pawel Laszczak
2019-07-09 7:22 ` Felipe Balbi
2019-07-09 7:29 ` Pawel Laszczak
2019-07-10 8:25 ` Pawel Laszczak
2019-07-08 7:11 ` Felipe Balbi
2019-07-15 11:00 ` Pawel Laszczak
2019-08-07 10:34 ` Felipe Balbi
2019-08-10 20:39 ` Pawel Laszczak
2019-08-12 1:55 ` Peter Chen
2019-08-12 4:43 ` Pawel Laszczak
2019-08-12 5:24 ` Felipe Balbi
2019-08-12 7:13 ` Pawel Laszczak
2019-08-12 8:19 ` Felipe Balbi
2019-08-12 9:13 ` Pawel Laszczak
2019-08-12 9:45 ` Felipe Balbi
2019-08-12 10:26 ` Pawel Laszczak
2019-08-12 10:34 ` Felipe Balbi
2019-08-12 14:20 ` Alan Stern
2019-07-05 10:57 ` [PATCH v9 6/6] usb:cdns3 Fix for stuck packets in on-chip OUT buffer Pawel Laszczak
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