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Subject[PATCH v5 3/9] serial: sc16is7xx: refactor GPIO controller registration
From: Hugo Villeneuve <hvilleneuve@dimonoff.com>

In preparation for upcoming patch "fix regression with GPIO
configuration". To facilitate review and make code more modular.

Cc: <stable@vger.kernel.org> # 6.1.x
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Lech Perczak <lech.perczak@camlingroup.com>
Tested-by: Lech Perczak <lech.perczak@camlingroup.com>
---
drivers/tty/serial/sc16is7xx.c | 39 ++++++++++++++++++++--------------
1 file changed, 23 insertions(+), 16 deletions(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 0c903d44429c..279d7dcb1447 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1349,6 +1349,26 @@ static int sc16is7xx_gpio_direction_output(struct gpio_chip *chip,

return 0;
}
+
+static int sc16is7xx_setup_gpio_chip(struct device *dev)
+{
+ struct sc16is7xx_port *s = dev_get_drvdata(dev);
+
+ if (!s->devtype->nr_gpio)
+ return 0;
+
+ s->gpio.owner = THIS_MODULE;
+ s->gpio.parent = dev;
+ s->gpio.label = dev_name(dev);
+ s->gpio.direction_input = sc16is7xx_gpio_direction_input;
+ s->gpio.get = sc16is7xx_gpio_get;
+ s->gpio.direction_output = sc16is7xx_gpio_direction_output;
+ s->gpio.set = sc16is7xx_gpio_set;
+ s->gpio.base = -1;
+ s->gpio.ngpio = s->devtype->nr_gpio;
+ s->gpio.can_sleep = 1;
+ return gpiochip_add_data(&s->gpio, s);
+}
#endif

static const struct serial_rs485 sc16is7xx_rs485_supported = {
@@ -1502,22 +1522,9 @@ static int sc16is7xx_probe(struct device *dev,
}

#ifdef CONFIG_GPIOLIB
- if (devtype->nr_gpio) {
- /* Setup GPIO cotroller */
- s->gpio.owner = THIS_MODULE;
- s->gpio.parent = dev;
- s->gpio.label = dev_name(dev);
- s->gpio.direction_input = sc16is7xx_gpio_direction_input;
- s->gpio.get = sc16is7xx_gpio_get;
- s->gpio.direction_output = sc16is7xx_gpio_direction_output;
- s->gpio.set = sc16is7xx_gpio_set;
- s->gpio.base = -1;
- s->gpio.ngpio = devtype->nr_gpio;
- s->gpio.can_sleep = 1;
- ret = gpiochip_add_data(&s->gpio, s);
- if (ret)
- goto out_thread;
- }
+ ret = sc16is7xx_setup_gpio_chip(dev, mctrl_mask);
+ if (ret)
+ goto out_thread;
#endif

/*
--
2.30.2
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