linux-kernel - Re: [PATCH 3/4] pinctrl: remove slew-rate parameter from tz1090

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Message-ID: <51C99581.2010403@imgtec.com>
Date:	Tue, 25 Jun 2013 14:05:05 +0100
From:	James Hogan <james.hogan@...tec.com>
To:	Heiko Stübner <heiko@...ech.de>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Stephen Warren <swarren@...dotorg.org>,
	<linux-kernel@...r.kernel.org>,
	<devicetree-discuss@...ts.ozlabs.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>
Subject: Re: [PATCH 3/4] pinctrl: remove slew-rate parameter from tz1090

Hi Heiko,

On 25/06/13 13:56, Heiko Stübner wrote:
> As the binding for slew-rate is under discussion and seems to need
> more tought it will get removed for now, so it doesn't get an offical

s/tought/thought/
s/offical/official/

> release.
> 
> Therefore remove it again from the only current user, tz1090.
> 
> Signed-off-by: Heiko Stuebner <heiko@...ech.de>
> ---

<snip>

> diff --git a/drivers/pinctrl/pinctrl-tz1090-pdc.c b/drivers/pinctrl/pinctrl-tz1090-pdc.c
> index 12e4808..d4f12cc 100644
> --- a/drivers/pinctrl/pinctrl-tz1090-pdc.c
> +++ b/drivers/pinctrl/pinctrl-tz1090-pdc.c
> @@ -809,11 +809,6 @@ static int tz1090_pdc_pinconf_group_reg(struct pinctrl_dev *pctldev,
>  		*width = 1;
>  		*map = tz1090_pdc_boolean_map;
>  		break;
> -	case PIN_CONFIG_SLEW_RATE:
> -		*shift = REG_GPIO_CONTROL2_PDC_SR_S;
> -		*width = 1;
> -		*map = tz1090_pdc_boolean_map;
> -		break;
>  	case PIN_CONFIG_DRIVE_STRENGTH:
>  		*shift = REG_GPIO_CONTROL2_PDC_DR_S;
>  		*width = 2;
> diff --git a/drivers/pinctrl/pinctrl-tz1090.c b/drivers/pinctrl/pinctrl-tz1090.c
> index 02ff3a2..4edae08 100644
> --- a/drivers/pinctrl/pinctrl-tz1090.c
> +++ b/drivers/pinctrl/pinctrl-tz1090.c
> @@ -1834,11 +1834,6 @@ static int tz1090_pinconf_group_reg(struct pinctrl_dev *pctldev,
>  		*width = 1;
>  		*map = tz1090_boolean_map;
>  		break;
> -	case PIN_CONFIG_SLEW_RATE:
> -		*reg = REG_PINCTRL_SR;
> -		*width = 1;
> -		*map = tz1090_boolean_map;
> -		break;
>  	case PIN_CONFIG_DRIVE_STRENGTH:
>  		*reg = REG_PINCTRL_DR;
>  		*width = 2;
> 

I don't see the harm in keeping the handling of PIN_CONFIG_SLEW_RATE,
since PIN_CONFIG_SLEW_RATE is still present and you only seem to be
removing the device tree bindings (which is the only important bit from
the DT ABI point of view).

Cheers
James

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