linux-kernel - Re: [PATCH v3 2/3] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq【请注意，邮件由linux-rockchip-bounces+kever.yang=rock-chips.com@...ts.infradead.org代发】

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Date:   Wed, 14 Oct 2020 08:23:56 +0800
From:   Kever Yang <kever.yang@...k-chips.com>
To:     Jianqun Xu <jay.xu@...k-chips.com>, linus.walleij@...aro.org,
        heiko@...ech.de
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v3 2/3] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq【请注意，邮件由linux-rockchip-bounces+kever.yang=rock-chips.com@...ts.infradead.org代发】


On 2020/10/13 下午2:37, Jianqun Xu wrote:
> There need to enable pclk_gpio when do irq_create_mapping, since it will
> do access to gpio controller.
>
> Reviewed-by: Heiko Stuebner <heiko@...ech.de>
> Signed-off-by: Jianqun Xu <jay.xu@...k-chips.com>
> ---
>   drivers/pinctrl/pinctrl-rockchip.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
> index 927d132d6716..a2f361aa6d05 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -3157,7 +3157,9 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
>   	if (!bank->domain)
>   		return -ENXIO;
>   
> +	clk_enable(bank->clk);
>   	virq = irq_create_mapping(bank->domain, offset);
> +	clk_disable(bank->clk);
>   
>   	return (virq) ? : -ENXIO;
>   }


Looks good to me,

Reviewed-by: Kever Yang<kever.yang@...k-chips.com>

Thanks,
- Kever