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Tue, 08 Apr 2025 00:42:04 -0700 (PDT) Received: from [127.0.1.1] ([2a01:cb1d:dc:7e00:2adf:eaae:f6ea:1a73]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c3009644dsm13876928f8f.6.2025.04.08.00.42.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Apr 2025 00:42:03 -0700 (PDT) From: Bartosz Golaszewski Date: Tue, 08 Apr 2025 09:42:00 +0200 Subject: [PATCH 1/2] serial: max310x: use new GPIO line value setter callbacks Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250408-gpiochip-set-rv-tty-v1-1-fb49444827d4@linaro.org> References: <20250408-gpiochip-set-rv-tty-v1-0-fb49444827d4@linaro.org> In-Reply-To: <20250408-gpiochip-set-rv-tty-v1-0-fb49444827d4@linaro.org> To: Greg Kroah-Hartman , Jiri Slaby , Linus Walleij , Bartosz Golaszewski Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-gpio@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; 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a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski --- drivers/tty/serial/max310x.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 35369a2f77b2..541c790c0109 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -1189,13 +1189,16 @@ static int max310x_gpio_get(struct gpio_chip *chip,= unsigned int offset) return !!((val >> 4) & (1 << (offset % 4))); } =20 -static void max310x_gpio_set(struct gpio_chip *chip, unsigned int offset, = int value) +static int max310x_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) { struct max310x_port *s =3D gpiochip_get_data(chip); struct uart_port *port =3D &s->p[offset / 4].port; =20 max310x_port_update(port, MAX310X_GPIODATA_REG, 1 << (offset % 4), value ? 1 << (offset % 4) : 0); + + return 0; } =20 static int max310x_gpio_direction_input(struct gpio_chip *chip, unsigned i= nt offset) @@ -1411,7 +1414,7 @@ static int max310x_probe(struct device *dev, const st= ruct max310x_devtype *devty s->gpio.direction_input =3D max310x_gpio_direction_input; s->gpio.get =3D max310x_gpio_get; s->gpio.direction_output=3D max310x_gpio_direction_output; - s->gpio.set =3D max310x_gpio_set; + s->gpio.set_rv =3D max310x_gpio_set; s->gpio.set_config =3D max310x_gpio_set_config; s->gpio.base =3D -1; s->gpio.ngpio =3D devtype->nr * 4; --=20 2.45.2 From nobody Thu Dec 18 19:28:53 2025 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 10749264F9E for ; Tue, 8 Apr 2025 07:42:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744098129; cv=none; b=PO/pVfjV9Y8JvRJFKRX29Mw7FMqdBr0PAgO3MVDmlNaqoofcnMuDoP2xJEfCVmLv1Qo1hMpDuoiyaK0UxNUNUs9jNqemLlXW/WYiQaJveItdoRIYTokuwNEJfUDKMSq4yo8OJlddoOiwrAv5qGw3tmnqeYdTr7+jmyBa3E36P1o= ARC-Message-Signature: i=1; a=rsa-sha256; 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a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski --- drivers/tty/serial/sc16is7xx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 560f45ed19ae..5ea8aadb6e69 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -1333,13 +1333,16 @@ static int sc16is7xx_gpio_get(struct gpio_chip *chi= p, unsigned offset) return !!(val & BIT(offset)); } =20 -static void sc16is7xx_gpio_set(struct gpio_chip *chip, unsigned offset, in= t val) +static int sc16is7xx_gpio_set(struct gpio_chip *chip, unsigned int offset, + int val) { struct sc16is7xx_port *s =3D gpiochip_get_data(chip); struct uart_port *port =3D &s->p[0].port; =20 sc16is7xx_port_update(port, SC16IS7XX_IOSTATE_REG, BIT(offset), val ? BIT(offset) : 0); + + return 0; } =20 static int sc16is7xx_gpio_direction_input(struct gpio_chip *chip, @@ -1422,7 +1425,7 @@ static int sc16is7xx_setup_gpio_chip(struct sc16is7xx= _port *s) s->gpio.direction_input =3D sc16is7xx_gpio_direction_input; s->gpio.get =3D sc16is7xx_gpio_get; s->gpio.direction_output =3D sc16is7xx_gpio_direction_output; - s->gpio.set =3D sc16is7xx_gpio_set; + s->gpio.set_rv =3D sc16is7xx_gpio_set; s->gpio.base =3D -1; s->gpio.ngpio =3D s->devtype->nr_gpio; s->gpio.can_sleep =3D 1; --=20 2.45.2