linux-kernel - [PATCH v4 4/4] gpio: rockchip: Set input direction when request irq

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Message-Id: <20241111023412.3466161-5-ye.zhang@rock-chips.com>
Date: Mon, 11 Nov 2024 10:34:12 +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
Subject: [PATCH v4 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>
---
 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 b7a43e492965..40c2476699aa 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