linux-kernel - RE: [PATCH] Input: wdt87xx_i2c - Change the sleep time to 2500ms after the sw reset

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Message-ID: <1A63A1423E772B419A9D2E882CBCF6C4020A4A95@mail>
Date:	Mon, 13 Jul 2015 19:47:03 +0800
From:	"Hn Chen" <hn.chen@...dahitech.com>
To:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
Cc:	<linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<charliemooney@...gle.com>
Subject: RE: [PATCH] Input: wdt87xx_i2c - Change the sleep time to 2500ms after the sw reset

Hi, Dmitry,

Thanks !

BR,
Hn.chen.

-----Original Message-----
From: Dmitry Torokhov [mailto:dmitry.torokhov@...il.com] 
Sent: Sunday, July 12, 2015 2:29 PM
To: Hn Chen
Cc: linux-input@...r.kernel.org; linux-kernel@...r.kernel.org; charliemooney@...gle.com
Subject: Re: [PATCH] Input: wdt87xx_i2c - Change the sleep time to 2500ms after the sw reset

On Sat, Jul 11, 2015 at 10:36:42PM +0800, HungNien Chen wrote:
>  The original value is 200ms, it includes the loading fw & boot up to  
> the main function. After that, the main function will do algorithm  
> initialized and touch calibrtion about 1.1 second. The touch  
> calibration will change controller freq to scan the best working freq  
> and it has risk to make the i2c data error when doing fw update.
>  We extend the sleep to 2500ms after the sw reset to skip this period time.
> 
> Signed-off-by: HungNien Chen <hn.chen@...dahitech.com>

Applied, thank you.

> ---
>  drivers/input/touchscreen/wdt87xx_i2c.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c 
> b/drivers/input/touchscreen/wdt87xx_i2c.c
> index b97cb4f..cfd1487 100644
> --- a/drivers/input/touchscreen/wdt87xx_i2c.c
> +++ b/drivers/input/touchscreen/wdt87xx_i2c.c
> @@ -157,6 +157,7 @@
>  /* Controller requires minimum 300us between commands */
>  #define WDT_COMMAND_DELAY_MS		2
>  #define WDT_FLASH_WRITE_DELAY_MS	4
> +#define	WDT_FW_RESET_TIME		2500
>  
>  struct wdt87xx_sys_param {
>  	u16	fw_id;
> @@ -413,7 +414,7 @@ static int wdt87xx_sw_reset(struct i2c_client *client)
>  	}
>  
>  	/* Wait the device to be ready */
> -	msleep(200);
> +	msleep(WDT_FW_RESET_TIME);
>  
>  	return 0;
>  }
> --
> 1.9.1
> 

-- 
Dmitry
--
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