linux-kernel - Re: [PATCH v3 4/5] pinctrl: mediatek: Add Pinctrl/GPIO/EINT driver for mt2701

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Date:	Thu, 4 Feb 2016 21:57:48 +0800
From:	Yingjoe Chen <yingjoe.chen@...iatek.com>
To:	Matthias Brugger <matthias.bgg@...il.com>
CC:	Biao Huang <biao.huang@...iatek.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	"Linus Walleij" <linus.walleij@...aro.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>, <linux-gpio@...r.kernel.org>,
	<srv_heupstream@...iatek.com>, <hongzhou.yang@...iatek.com>,
	<erin.lo@...iatek.com>
Subject: Re: [PATCH v3 4/5] pinctrl: mediatek: Add Pinctrl/GPIO/EINT driver
 for mt2701

On Thu, 2016-02-04 at 14:48 +0100, Matthias Brugger wrote:
> 
> On 28/12/15 09:07, Yingjoe Chen wrote:
> > On Mon, 2015-12-28 at 15:09 +0800, Biao Huang wrote:
> >> Add mt2701 support using mediatek common pinctrl driver.
> >> MT2701 have some special pins need an extra setting register
> >> than other ICs, so adding this support to common code.
> >>
> >> Signed-off-by: Biao Huang <biao.huang@...iatek.com>
> >> Acked-by: Yingjoe Chen <yingjoe.chen@...iatek.com>
> > <...>
> >> +
> >> +static struct platform_driver mtk_pinctrl_driver = {
> >> +	.probe = mt2701_pinctrl_probe,
> >> +	.driver = {
> >> +		.name = "mediatek-mt2701-pinctrl",
> >> +		.owner = THIS_MODULE,
> >> +		.of_match_table = mt2701_pctrl_match,
> >> +	},
> >> +};
> >> +
> >> +static int __init mtk_pinctrl_init(void)
> >> +{
> >> +	return platform_driver_register(&mtk_pinctrl_driver);
> >> +}
> >> +
> >> +arch_initcall(mtk_pinctrl_init);
> >
> >
> > As discussed in
> > http://lists.infradead.org/pipermail/linux-mediatek/2015-December/003350.html
> > we should use subsys_initcall() instead.
> >
> >
> >> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> >> index f307f1d..76279f0 100644
> >> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> >> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> > <...>
> >> @@ -347,6 +352,7 @@ static int mtk_pconf_parse_conf(struct pinctrl_dev *pctldev,
> >>   		ret = mtk_pconf_set_pull_select(pctl, pin, true, false, arg);
> >>   		break;
> >>   	case PIN_CONFIG_INPUT_ENABLE:
> >> +		mtk_pmx_gpio_set_direction(pctldev, NULL, pin, true);
> >>   		ret = mtk_pconf_set_ies_smt(pctl, pin, arg, param);
> >>   		break;
> >>   	case PIN_CONFIG_OUTPUT:
> >> @@ -354,6 +360,7 @@ static int mtk_pconf_parse_conf(struct pinctrl_dev *pctldev,
> >>   		ret = mtk_pmx_gpio_set_direction(pctldev, NULL, pin, false);
> >>   		break;
> >>   	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
> >> +		mtk_pmx_gpio_set_direction(pctldev, NULL, pin, true);
> >>   		ret = mtk_pconf_set_ies_smt(pctl, pin, arg, param);
> >>   		break;
> >>   	case PIN_CONFIG_DRIVE_STRENGTH:
> >
> > This change is not directly related to adding mt2710 support and change
> > behavior for all MTK pinctrl drivers, please create a separate patch for
> > this.
> >
> 
> Hi Biao,
> 
> This patch didn't make it into v4.5-rc1. Are you thinking of sending a 
> new version addressing the comments from Yingjoe?

He already did,
http://lists.infradead.org/pipermail/linux-mediatek/2016-February/003980.html

The issue now is whether this change match the property.

Joe.C