linux-kernel - Re: [PATCH] misc: fastrpc: add ioctl for attaching to sensors pd

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Message-ID: <f2faa7b2-1e7d-2f39-ef36-a3790cedfab9@linaro.org>
Date:   Mon, 7 Sep 2020 15:01:18 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Jonathan Marek <jonathan@...ek.ca>, linux-arm-msm@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] misc: fastrpc: add ioctl for attaching to sensors pd



On 07/09/2020 14:47, Jonathan Marek wrote:
> On 9/7/20 8:36 AM, Srinivas Kandagatla wrote:
>>
>>
>> On 01/09/2020 01:32, Jonathan Marek wrote:
>>> -#define FASTRPC_IOCTL_MMAP              _IOWR('R', 6, struct 
>>> fastrpc_req_mmap)
>>> -#define FASTRPC_IOCTL_MUNMAP            _IOWR('R', 7, struct 
>>> fastrpc_req_munmap)
>>> +#define FASTRPC_IOCTL_MMAP        _IOWR('R', 6, struct 
>>> fastrpc_req_mmap)
>>> +#define FASTRPC_IOCTL_MUNMAP        _IOWR('R', 7, struct 
>>> fastrpc_req_munmap)
>>
>> Looks like changes that do not belong to this patch!
>>
>> I wanted to try this patch on SM8250.
>> How do you test attaching fastrpc to sensor core?, I mean which 
>> userspace lib/tool do you use?
>>
>> --srini
>>
> 
> I pushed my sdsprpcd implementation to github, which is responsible for 
> initializing the sensors, and uses this ioctl:
> 
> https://github.com/flto/fastrpc

Thanks!, I can take a look and see if I can try it out with linaro 
fastrpc library!
> 
> Note: it uses my own WIP fastrpc "library" instead of the one from 
> linaro, I also have other related code, like a sensor client, and 
> cDSP/aDSP compute examples, but need to confirm that I can share them
> 
> Also, the corresponding dts patch I sent has a problem, the label = 
> "dsps"; should be label = "sdsp"; (copied the "dsps" from downstream, 
> but upstream expects "sdsp"), will send a v2 later today.
Also the dts patch will fail to apply as it is, as it seems me that you 
have based the patch after adding audio dts patch!


--srini
> 
>>> +#define FASTRPC_IOCTL_INIT_ATTACH_SNS    _IO('R', 8)