linux-kernel - [PATCH v5 4/4] gpio: rockchip: Set input direction when request irq

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Message-Id: <20241112015408.3139996-5-ye.zhang@rock-chips.com>
Date: Tue, 12 Nov 2024 09:54:08 +0800
From: Ye Zhang <ye.zhang@...k-chips.com>
To: Ye Zhang <ye.zhang@...k-chips.com>,
	linus.walleij@...aro.org,
	brgl@...ev.pl,
	heiko@...ech.de,
	linux-gpio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Cc: linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	mika.westerberg@...ux.intel.com,
	andriy.shevchenko@...ux.intel.com,
	tao.huang@...k-chips.com,
	finley.xiao@...k-chips.com,
	tim.chen@...k-chips.com,
	elaine.zhang@...k-chips.com,
	Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: [PATCH v5 4/4] gpio: rockchip: Set input direction when request irq

Since the GPIO can only generate interrupts when its direction is set to
input, it is set to input before requesting the interrupt resources.

Signed-off-by: Ye Zhang <ye.zhang@...k-chips.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
 drivers/gpio/gpio-rockchip.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index c090cac694bf..cdfdd5501a1e 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -476,8 +476,11 @@ static int rockchip_irq_reqres(struct irq_data *d)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
 	struct rockchip_pin_bank *bank = gc->private;
+	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
-	return gpiochip_reqres_irq(&bank->gpio_chip, d->hwirq);
+	rockchip_gpio_direction_input(&bank->gpio_chip, hwirq);
+
+	return gpiochip_reqres_irq(&bank->gpio_chip, hwirq);
 }
 
 static void rockchip_irq_relres(struct irq_data *d)
-- 
2.34.1