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

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Message-ID: <56B356CA.1010200@gmail.com>
Date:	Thu, 4 Feb 2016 14:48:58 +0100
From:	Matthias Brugger <matthias.bgg@...il.com>
To:	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Biao Huang <biao.huang@...iatek.com>
Cc:	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 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?

Regards,
Matthias