linux-kernel - [PATCH 3/5] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to

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Date:   Mon,  7 Sep 2020 10:59:25 +0800
From:   Jianqun Xu <jay.xu@...k-chips.com>
To:     linus.walleij@...aro.org, heiko@...ech.de
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Jianqun Xu <jay.xu@...k-chips.com>
Subject: [PATCH 3/5] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq

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 cc7512acfc5f..58fd4d822591 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;
 }
-- 
2.17.1