linux-kernel - Re: [PATCH v2 1/4] fbtft: Replace custom ->reset() with generic one

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Message-ID: <20210417071838.GA1401@agape.jhs>
Date:   Sat, 17 Apr 2021 09:18:41 +0200
From:   Fabio Aiuto <fabioaiuto83@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v2 1/4] fbtft: Replace custom ->reset() with generic one

Hi,

'staging:' in mail subject is missing...

On Fri, Apr 16, 2021 at 05:20:41PM +0300, Andy Shevchenko wrote:
> The custom ->reset() repeats the generic one, replace it.
> 
> Note, in newer kernels the context of the function is a sleeping one,
> it's fine to switch over to the sleeping functions. Keeping the reset
> line asserted longer than 20 microseconds is also okay, it's an idling
> state of the hardware.
> 
> Fixes: b2ebd4be6fa1 ("staging: fbtft: add fb_agm1264k-fl driver")
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> v2: new patch split from the bigger fix (Greg)
>  drivers/staging/fbtft/fb_agm1264k-fl.c | 14 --------------
>  1 file changed, 14 deletions(-)
> 
> diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
> index eeeeec97ad27..4dfc22d05a40 100644
> --- a/drivers/staging/fbtft/fb_agm1264k-fl.c
> +++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
> @@ -77,19 +77,6 @@ static int init_display(struct fbtft_par *par)
>  	return 0;
>  }
>  
> -static void reset(struct fbtft_par *par)
> -{
> -	if (!par->gpio.reset)
> -		return;
> -
> -	dev_dbg(par->info->device, "%s()\n", __func__);
> -
> -	gpiod_set_value(par->gpio.reset, 0);
> -	udelay(20);
> -	gpiod_set_value(par->gpio.reset, 1);
> -	mdelay(120);
> -}
> -
>  /* Check if all necessary GPIOS defined */
>  static int verify_gpios(struct fbtft_par *par)
>  {
> @@ -439,7 +426,6 @@ static struct fbtft_display display = {
>  		.set_addr_win = set_addr_win,
>  		.verify_gpios = verify_gpios,
>  		.request_gpios_match = request_gpios_match,
> -		.reset = reset,
>  		.write = write,
>  		.write_register = write_reg8_bus8,
>  		.write_vmem = write_vmem,
> -- 
> 2.30.2
> 
> 

thank you,

fabio