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Fri, 10 Apr 2026 00:09:44 -0700 (PDT) X-Received: by 2002:a05:622a:834f:b0:50d:aa99:7bbf with SMTP id d75a77b69052e-50dd5c0be6bmr27268711cf.43.1775804984031; Fri, 10 Apr 2026 00:09:44 -0700 (PDT) Received: from brgl-qcom.home ([2a01:cb1d:dc:7e00:7d6c:c663:fa06:9ee8]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d63e50289sm5338689f8f.28.2026.04.10.00.09.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Apr 2026 00:09:43 -0700 (PDT) From: Bartosz Golaszewski To: Frank Wunderlich , Sean Wang , Linus Walleij , Matthias Brugger , AngeloGioacchino Del Regno , Bartosz Golaszewski Cc: linux-mediatek@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Bartosz Golaszewski Subject: [PATCH] pinctrl: mediatek: moore: implement gpio_chip::get_direction() Date: Fri, 10 Apr 2026 09:09:35 +0200 Message-ID: <20260410070935.9540-1-bartosz.golaszewski@oss.qualcomm.com> X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: mecwkk26BVJI5qXPsGITRTSVo3biB-mk X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDEwMDA2NCBTYWx0ZWRfX0CDY5FQML+e0 r9e+DbjjoPQSPiJ2YsVMMkLmnPwOBt0rCSs8pf6K+vX4+4dNVzPc6gq12nEoMAqJVifgw3jAlLX LAMYZQ80oBoUQgSMX75n6eDBFJSHu1f4mJ7wZwZq0EOJnKXI9R0wPFFZxdyP7AhYaAB9iscdobE hmbDAWz2AriOBbToVuVep5vtEQiI0vU9GJXkpkOD9ktA5PfX+rOW59+Q3hZ8mt2fZ0KbYqvT9UA XMyWXGUxgID0ZDw+mTLZ0r4PAUbVqNT9HHq+YDzWtXgZBo1NG21j6I07j3TphquPgz7KMUi2IXz 5OlMrlwld26kPNAbKIjXq9ZBpmpyyZevl+0XVFIentQl3os68/M9a/W875shjkXuqOp8UdvqxlY 3+gUCEwljzGjxPRO7URXoHSxRgv8ckk6NO2741rxft9i6IHbwmTQOMKt+6GfCcNlDKSx75d7wDt dNnNcbPVdb/gqFno+lQ== X-Proofpoint-ORIG-GUID: mecwkk26BVJI5qXPsGITRTSVo3biB-mk X-Authority-Analysis: v=2.4 cv=DslmPm/+ c=1 sm=1 tr=0 ts=69d8a239 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=xqWC_Br6kY4A:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=gdeKHt93fcZDdug0Yb8A:9 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-10_02,2026-04-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 suspectscore=0 adultscore=0 malwarescore=0 clxscore=1015 impostorscore=0 bulkscore=0 priorityscore=1501 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604100064 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260410_000947_632461_FB7C91C2 X-CRM114-Status: GOOD ( 12.17 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org If the gpio_chip::get_direction() callback is not implemented by the GPIO controller driver, GPIOLIB emits a warning. Implement get_direction() for the GPIO part of pinctrl-moore. Fixes: 471e998c0e31 ("gpiolib: remove redundant callback check") Fixes: e623c4303ed1 ("gpiolib: sanitize the return value of gpio_chip::get_direction()") Reported-by: Frank Wunderlich Closes: https://lore.kernel.org/all/20260409132724.126258-1-linux@fw-web.de/ Signed-off-by: Bartosz Golaszewski --- drivers/pinctrl/mediatek/pinctrl-moore.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/pinctrl/mediatek/pinctrl-moore.c b/drivers/pinctrl/mediatek/pinctrl-moore.c index 70f608347a5f6..071ba849e5322 100644 --- a/drivers/pinctrl/mediatek/pinctrl-moore.c +++ b/drivers/pinctrl/mediatek/pinctrl-moore.c @@ -520,6 +520,23 @@ static int mtk_gpio_direction_output(struct gpio_chip *chip, unsigned int gpio, return pinctrl_gpio_direction_output(chip, gpio); } +static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) +{ + struct mtk_pinctrl *hw = gpiochip_get_data(chip); + const struct mtk_pin_desc *desc; + int ret, dir; + + desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset]; + if (!desc->name) + return -ENOTSUPP; + + ret = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &dir); + if (ret) + return ret; + + return dir ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN; +} + static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned int offset) { struct mtk_pinctrl *hw = gpiochip_get_data(chip); @@ -566,6 +583,7 @@ static int mtk_build_gpiochip(struct mtk_pinctrl *hw) chip->parent = hw->dev; chip->request = gpiochip_generic_request; chip->free = gpiochip_generic_free; + chip->get_direction = mtk_gpio_get_direction; chip->direction_input = pinctrl_gpio_direction_input; chip->direction_output = mtk_gpio_direction_output; chip->get = mtk_gpio_get; -- 2.47.3