linux-kernel - Re: [PATCH] extcon: Introduce EXTCON_PROP_USB

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Date:	Thu, 18 Aug 2016 10:25:55 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Guenter Roeck <groeck@...gle.com>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Guenter Roeck <groeck@...omium.org>,
	Chris Zhong <zyw@...k-chips.com>,
	"cpgs (cpgs@...sung.com)" <cpgs@...sung.com>
Subject: Re: [PATCH] extcon: Introduce EXTCON_PROP_USB_SUPERSPEED property

On 2016년 08월 18일 09:41, Guenter Roeck wrote:
> On Wed, Aug 17, 2016 at 5:37 PM, Chanwoo Choi <cw00.choi@...sung.com> wrote:
>> Hi Guenter,
>>
>> How about changing the property name for SuperSpeed as following?
>> It is more simple and reduce the length of property name.
>> - EXTCON_PROP_USB_SUPERSPEED -> EXTCON_PROP_USB_SS
>>
> Whatever you prefer is fine.

OK. Thanks. I'll change the property name.

Regards,
Chanwoo Choi

> 
> Thanks,
> Guenter
> 
>> Regards,
>> Chanwoo Choi
>>
>> On 2016년 08월 16일 10:41, Guenter Roeck wrote:
>>> On Mon, Aug 15, 2016 at 5:55 PM, Chanwoo Choi <cw00.choi@...sung.com> wrote:
>>>> Hi Guenter,
>>>>
>>>> Looks good to me.
>>>> I'll add the reference[1] information on patch description and applied it.
>>>> [1] https://en.wikipedia.org/wiki/USB#Overview
>>>>
>>>
>>> Thanks!
>>>
>>> Guenter
>>>
>>>> Thanks,
>>>> Chanwoo Choi
>>>>
>>>> On 2016년 08월 15일 22:15, Guenter Roeck wrote:
>>>>> From: Guenter Roeck <groeck@...omium.org>
>>>>>
>>>>> EXTCON_PROP_USB_SUPERSPEED is necessary to distinguish between USB/USB2
>>>>> and USB3 connections on USB Type-C cables.
>>>>>
>>>>> Cc: Chris Zhong <zyw@...k-chips.com>
>>>>> Signed-off-by: Guenter Roeck <groeck@...omium.org>
>>>>> ---
>>>>> Applies on top of extcon-next.
>>>>>
>>>>>  include/linux/extcon.h | 8 +++++++-
>>>>>  1 file changed, 7 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/include/linux/extcon.h b/include/linux/extcon.h
>>>>> index ad7a1606a7f3..38d2c0dec2c1 100644
>>>>> --- a/include/linux/extcon.h
>>>>> +++ b/include/linux/extcon.h
>>>>> @@ -107,12 +107,18 @@
>>>>>   * @type:    integer (intval)
>>>>>   * @value:   0 (normal) or 1 (flip)
>>>>>   * @default: 0 (normal)
>>>>> + * - EXTCON_PROP_USB_SUPERSPEED
>>>>> + * @type:       integer (intval)
>>>>> + * @value:      0 (USB/USB2) or 1 (USB3)
>>>>> + * @default:    0 (USB/USB2)
>>>>> + *
>>>>>   */
>>>>>  #define EXTCON_PROP_USB_VBUS         0
>>>>>  #define EXTCON_PROP_USB_TYPEC_POLARITY       1
>>>>> +#define EXTCON_PROP_USB_SUPERSPEED   2
>>>>>
>>>>>  #define EXTCON_PROP_USB_MIN          0
>>>>> -#define EXTCON_PROP_USB_MAX          1
>>>>> +#define EXTCON_PROP_USB_MAX          2
>>>>>  #define EXTCON_PROP_USB_CNT  (EXTCON_PROP_USB_MAX - EXTCON_PROP_USB_MIN + 1)
>>>>>
>>>>>  /* Properties of EXTCON_TYPE_CHG. */
>>>>>
>>>>
>>>
>>>
>>>
>>
> 
> 
>