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From: Wesley Cheng <wcheng@codeaurora.org>
To: Jack Pham <jackp@codeaurora.org>
Cc: balbi@kernel.org, gregkh@linuxfoundation.org, robh+dt@kernel.org,
	agross@kernel.org, bjorn.andersson@linaro.org,
	linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	peter.chen@nxp.com
Subject: Re: [PATCH v6 1/4] usb: gadget: udc: core: Introduce check_config to verify USB configuration
Date: Mon, 25 Jan 2021 17:01:46 -0800	[thread overview]
Message-ID: <f5d04121-fd8c-9644-59c0-0ee8aa132de0@codeaurora.org> (raw)
In-Reply-To: <20210122051743.GE31406@jackp-linux.qualcomm.com>



On 1/21/2021 9:17 PM, Jack Pham wrote:
> Hi Wesley,
> 
> On Thu, Jan 21, 2021 at 08:01:37PM -0800, Wesley Cheng wrote:
>> Some UDCs may have constraints on how many high bandwidth endpoints it can
>> support in a certain configuration.  This API allows for the composite
>> driver to pass down the total number of endpoints to the UDC so it can verify
>> it has the required resources to support the configuration.
>>
>> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
>> ---
>>  drivers/usb/gadget/udc/core.c | 9 +++++++++
>>  include/linux/usb/gadget.h    | 2 ++
>>  2 files changed, 11 insertions(+)
>>
>> diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
>> index 4173acd..469962f 100644
>> --- a/drivers/usb/gadget/udc/core.c
>> +++ b/drivers/usb/gadget/udc/core.c
>> @@ -1003,6 +1003,15 @@ int usb_gadget_ep_match_desc(struct usb_gadget *gadget,
>>  }
>>  EXPORT_SYMBOL_GPL(usb_gadget_ep_match_desc);
>>  
>> +int usb_gadget_check_config(struct usb_gadget *gadget, unsigned long ep_map)
> 
> You should probably add a kernel-doc for this function.
> 
> Jack
> 
Hi Jack,

Sure, I'll update a bit more about how this API can be used.

Thanks
Wesley Cheng

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

  reply	other threads:[~2021-01-26 10:20 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-22  4:01 [PATCH v6 0/4] Re-introduce TX FIFO resize for larger EP bursting Wesley Cheng
2021-01-22  4:01 ` [PATCH v6 1/4] usb: gadget: udc: core: Introduce check_config to verify USB configuration Wesley Cheng
2021-01-22  5:17   ` Jack Pham
2021-01-26  1:01     ` Wesley Cheng [this message]
2021-01-22 16:24   ` Alan Stern
2021-01-26  1:02     ` Wesley Cheng
2021-01-22  4:01 ` [PATCH v6 2/4] usb: gadget: configfs: Check USB configuration before adding Wesley Cheng
2021-01-22  4:01 ` [PATCH v6 3/4] usb: dwc3: Resize TX FIFOs to meet EP bursting requirements Wesley Cheng
2021-01-22 17:12   ` Bjorn Andersson
2021-01-26  1:14     ` Wesley Cheng
2021-01-26  1:55       ` Bjorn Andersson
2021-01-26  4:32         ` Wesley Cheng
2021-01-26  5:15           ` Bjorn Andersson
2021-01-28 23:08             ` Wesley Cheng
2021-01-23  0:15   ` Thinh Nguyen
2021-01-26  9:51     ` Wesley Cheng
2021-01-26 20:43       ` Thinh Nguyen
2021-01-26 23:26         ` Wesley Cheng
2021-01-27  1:47           ` Thinh Nguyen
2021-01-22  4:01 ` [PATCH v6 4/4] arm64: boot: dts: qcom: sm8150: Enable dynamic TX FIFO resize logic Wesley Cheng

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