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[176.7.58.112]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c2496734bfcsm1958495166b.43.2026.08.25.06.50.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 25 Aug 2026 06:51:00 -0700 (PDT) Message-ID: <77daa3ee-e5cd-4be9-8110-6f31c90f76d6@gmail.com> Date: Tue, 25 Aug 2026 15:50:56 +0200 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 12/14] gpio: regmap: Add optional runtime PM support To: Andy Shevchenko , Janani Sunil Cc: =?UTF-8?Q?Nuno_S=C3=A1?= , Michael Hennerich , Jonathan Cameron , David Lechner , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Olivier Moysan , Philipp Zabel , Linus Walleij , Bartosz Golaszewski , Jonathan Corbet , Shuah Khan , Michael Walle , linux@analog.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-doc@vger.kernel.org, =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= References: <20260821-ad7768-driver-v4-0-bb8fbd06d4eb@analog.com> <20260821-ad7768-driver-v4-12-bb8fbd06d4eb@analog.com> Content-Language: en-US From: Janani Sunil In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/24/26 10:05, Andy Shevchenko wrote: > On Fri, Aug 21, 2026 at 04:07:05PM +0200, Janani Sunil wrote: >> Some gpio-regmap consumers share their regmap with a parent device that >> may be runtime suspended. GPIO register accesses must resume that device >> first. >> >> Add an optional pm_dev field and acquire it before register translation >> or access. Release it using runtime autosuspend after each operation. >> Keep the device active across the complete direction-output sequence and >> propagate failure when setting the initial output value. >> +DEFINE_GUARD(gpio_regmap_runtime, struct gpio_regmap *, >> + gpio_regmap_runtime_get(_T), gpio_regmap_runtime_put(_T)) > This is not used, it's for guard()() case. > DEFINED_GUARD() was added because DEFINE_GUARD_COND() extends that class and reuses its type, destructor and error helpers. Regards, Jan