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AJvYcCWidwAyU3YZA9pG4xYhRKOdgqx67ajO+fnCaWeUVLr4TNROOlYHY+EFAVbWDjeBAymYnQctjL1mhA==@kvack.org X-Gm-Message-State: AOJu0Yx0dHa+M4j5tyo814V4R1YcfbgwKZW2U4t6hfPitX+zHEIhPjIN edLynYs5zXMvkHf4g/8Dkh+uyLxX5Tx2xC+7Ki6fa+vyWApck3Ez/ak9YfeZnk9Kmn12fH+qwDR RyJqBU94kpYLMCDKn9DrO9GUOVFrrFac= X-Gm-Gg: ASbGncvC61Mb/h7jyrrupofs59DefxfuS6ei5TNqlZkVDxWpObmh+9lg9appFjDN8iS YfrmmkwFT7su3zwrYXJe56oPRidPEQyiOlyIQhspCiXlvrGU1aQ0oiJVMqFtNWByrhxzv7CnYIJ EObvENy6QglGCqTI9cXNqU+RB9b8SBXcWbJ73YPHuoKaWzKpbRgEAoFlW5+AZ/7If5dtphlqbNR NPKrz4Jzg== X-Google-Smtp-Source: AGHT+IEJQOY2N21rRHh/x9SsZgR/AC6673gfg/Aq7DulgeR+61NEupHsjseGW2o2I6RkO01k98hTvI6/W9mnPdZHDTE= X-Received: by 2002:a17:906:6a12:b0:ae0:b33d:2a4a with SMTP id a640c23a62f3a-af8fd97569fmr398869466b.35.1753879828299; Wed, 30 Jul 2025 05:50:28 -0700 (PDT) MIME-Version: 1.0 References: <20250724-pinctrl-gpio-pinfuncs-v3-0-af4db9302de4@linaro.org> <20250724-pinctrl-gpio-pinfuncs-v3-12-af4db9302de4@linaro.org> In-Reply-To: From: Andy Shevchenko Date: Wed, 30 Jul 2025 14:49:51 +0200 X-Gm-Features: Ac12FXxgFDuQutFN_-MaFgaos1SbYd6nY92Ty-kjNsHnooD1EOK3KyGkMl4TA4s Message-ID: Subject: Re: [PATCH v3 12/15] pinctrl: allow to mark pin functions as requestable GPIOs To: Bartosz Golaszewski Cc: Linus Walleij , Bjorn Andersson , Konrad Dybcio , Alexey Klimov , Lorenzo Bianconi , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Paul Cercueil , Kees Cook , Andy Shevchenko , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Dong Aisheng , Fabio Estevam , Shawn Guo , Jacky Bai , Pengutronix Kernel Team , NXP S32 Linux Team , Sascha Hauer , Tony Lindgren , Haojian Zhuang , Geert Uytterhoeven , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, imx@lists.linux.dev, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Bartosz Golaszewski Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 2A39940016 X-Stat-Signature: 1b7w9esra8co4mf9tce4wb1a9tzhupjr X-HE-Tag: 1753879829-206597 X-HE-Meta: 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 ZMWLs9ro 59Xn+e0khE5ME8pSYpGgyw4IyKRKtMI+ISXML/+cnkD1QUlvDUi0Yan58NWq/mUMIfxh5MmofmouSWpb3YF6+zcWspP2s0c1bg9N22MSQKoRq9a68hga0A3i16EZTWkH2hqmNmsZASQYdUoKXZQgRbYVx/J9FeHapvT8JyxpulRCw7H5xRXm30wPbPo0YHLYZljoWce5ve03HEXZ94y0KrG/QiEK5jLDZDMdCsWZRC7l+c8geD+B+l4difcNR2lWwgnzjyBGA3ghYi4REsO3VPdrtyEs+azsRUsZSTs5Th8iPz8hvb97O04FQZC5M6s+0/ItmyWqS8V2Cis7U0smJjQFd29vvHRsOCrw6xx9/hCSDJe1H9oRipFsFipSvomSFTNC0q3xxJXQFIazbMH3IXYy4I1qoojkqtVWnttNugfQJ3qxxOL0mEJogBrF3OuagA88YE0pEjmFPkf2aYwAZ85k6WDl3wLApq2XA4Y1/c0EEKu8= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jul 30, 2025 at 11:54=E2=80=AFAM Bartosz Golaszewski wrote: > > On Thu, Jul 24, 2025 at 2:22=E2=80=AFPM Andy Shevchenko > wrote: > > > > > struct pinfunction { > > > const char *name; > > > const char * const *groups; > > > size_t ngroups; > > > + unsigned long flags; > > > > Not sure we need this. If the function is GPIO, pin control already > > knows about this. The pin muxing has gpio request / release callbacks > > that change the state. Why do we need an additional flag(s)? > > > > I'm not following, how does the pin controller know that the function > is GPIO exactly, other than by the bit set in this field? AFAICS the gpio_owner !=3D NULL means that. No need to have a duplicate of this information. --=20 With Best Regards, Andy Shevchenko