linux-kernel - RE: [PATCH] Input: elan_i2c - Reduce the resume time for new dev ices

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Message-ID: <1615301614.16870.jingle.wu@emc.com.tw>
Date:   Tue, 09 Mar 2021 22:53:34 +0800 (CST)
From:   "jingle.wu" <jingle.wu@....com.tw>
To:     "'Dmitry Torokhov'" <dmitry.torokhov@...il.com>
Cc:     "'linux-kernel'" <linux-kernel@...r.kernel.org>,
        "linux-input" <linux-input@...r.kernel.org>,
        "'phoenix'" <phoenix@....com.tw>,
        "dave.wang" <dave.wang@....com.tw>,
        "'josh.chen'" <josh.chen@....com.tw>
Subject: RE: [PATCH] Input: elan_i2c - Reduce the resume time for new dev
         ices

Hi Dmitry:

Was this the only issue with the updated patch? Did it work for you
otherwise?
-> Yes, the updated patch can work successfully after fix this issue.

THANKS
JINGLE

-----Original Message-----
From: 'Dmitry Torokhov' [mailto:dmitry.torokhov@...il.com] 
Sent: Tuesday, March 09, 2021 9:38 AM
To: jingle
Cc: 'linux-kernel'; 'linux-input'; 'phoenix'; 'dave.wang'; 'josh.chen'
Subject: Re: [PATCH] Input: elan_i2c - Reduce the resume time for new dev
ices

Hi Jingle,

On Mon, Mar 08, 2021 at 04:56:14PM +0800, jingle wrote:
> Hi Dmitry:
> 
> 1. missing "i<" 
> +	u32 quirks = 0;
> +	int i;
> +
> +	for (i = 0; ARRAY_SIZE(elan_i2c_quirks); i++) {
> 
> -> for (i = 0; i<ARRAY_SIZE(elan_i2c_quirks); i++) {

Yes, you are right of course. Was this the only issue with the updated
patch? Did it work for you otherwise?

> 
> 2. elan_resume () funtion are different with at Chromeos driver.
> @@ -1384,7 +1422,7 @@ static int __maybe_unused elan_resume(struct 
> device
> *dev)
>  		goto err;
>  	}
>  
> -	error = elan_initialize(data);
> +	error = elan_initialize(data, data->quirks &
> ETP_QUIRK_QUICK_WAKEUP);
>  	if (error)
>  		dev_err(dev, "initialize when resuming failed: %d\n",
error);
> 
> -> https://chromium.googlesource.com/chromiumos/third_party/kernel/+/r
> -> ef
> -> s/heads/chromeos-5.4/drivers/input/mouse/elan_i2c_core.c#1434
> -> error = elan_initialize(data);  this code is in elan_reactivate()
> function at Chromeos driver.
> -> Will this change affect cherrypick from linux kernel to chromeos?

Yes, we would need to adjust the patch for Chrome OS and have
elan_reactivate() to call elan_initialize() with appropriate argument.

Thanks.

--
Dmitry