[{"id":3675147,"web_url":"http://patchwork.ozlabs.org/comment/3675147/","msgid":"","list_archive_url":null,"date":"2026-04-09T08:07:24","subject":"Re: [RFC PATCH 4/5] gpio: mmio: convert accessors to generic register\n descriptors","submitter":{"id":92050,"url":"http://patchwork.ozlabs.org/api/people/92050/","name":"Linus Walleij","email":"linusw@kernel.org"},"content":"Hi Jose,\n\nthanks for your patch!\n\nOn Tue, Apr 7, 2026 at 8:49 PM Jose Javier Rodriguez Barbarin\n wrote:\n\n> Convert the gpio-mmio accessors to use struct gpio_chip_reg instead of\n> the previous MMIO-only register type.\n>\n> This allows the same accessors to operate on both MMIO and PMIO\n> registers and aligns gpio-mmio with the updated gpio_generic_chip API.\n>\n> Signed-off-by: Jose Javier Rodriguez Barbarin \n\nThis should work the same fine with a union as described per\npatch 1, and this is where that will start saving a bunch of memory.\n\nPossibly squash patch 1 into this patch? The new struct/union\nisn't used until here.\n\nYours,\nLinus Walleij","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=LHcbuAbi;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; helo=sto.lore.kernel.org;\n envelope-from=linux-gpio+bounces-34921-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"LHcbuAbi\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201"],"Received":["from sto.lore.kernel.org (sto.lore.kernel.org\n [IPv6:2600:3c09:e001:a7::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4frsx86ThZz1yCv\n\tfor ; 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Thu, 09 Apr 2026\n 01:07:34 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"<20260407184805.807328-1-dev-josejavier.rodriguez@duagon.com>\n <20260407184805.807328-5-dev-josejavier.rodriguez@duagon.com>","In-Reply-To":"<20260407184805.807328-5-dev-josejavier.rodriguez@duagon.com>","From":"Linus Walleij ","Date":"Thu, 9 Apr 2026 10:07:24 +0200","X-Gmail-Original-Message-ID":"\n ","X-Gm-Features":"AQROBzBkavb26-WDDLAuTxTNJd_i9vbiGYa7-KJ0vQBl_oWlwFNtOPje7S_8hmw","Message-ID":"\n ","Subject":"Re: [RFC PATCH 4/5] gpio: mmio: convert accessors to generic register\n descriptors","To":"Jose Javier Rodriguez Barbarin ","Cc":"brgl@kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}},{"id":3675687,"web_url":"http://patchwork.ozlabs.org/comment/3675687/","msgid":"","list_archive_url":null,"date":"2026-04-10T07:10:09","subject":"Re: [RFC PATCH 4/5] gpio: mmio: convert accessors to generic\n register descriptors","submitter":{"id":92011,"url":"http://patchwork.ozlabs.org/api/people/92011/","name":"Jose Javier Rodriguez Barbarin","email":"dev-josejavier.rodriguez@duagon.com"},"content":"On Thu, Apr 09, 2026 at 10:07:24AM +0200, Linus Walleij wrote:\n> Hi Jose,\n> \n> thanks for your patch!\n> \nHi Linus,\n\nThanks for your answer\n\n> On Tue, Apr 7, 2026 at 8:49 PM Jose Javier Rodriguez Barbarin\n> wrote:\n> \n> > Convert the gpio-mmio accessors to use struct gpio_chip_reg instead of\n> > the previous MMIO-only register type.\n> >\n> > This allows the same accessors to operate on both MMIO and PMIO\n> > registers and aligns gpio-mmio with the updated gpio_generic_chip API.\n> >\n> > Signed-off-by: Jose Javier Rodriguez Barbarin \n> \n> This should work the same fine with a union as described per\n> patch 1, and this is where that will start saving a bunch of memory.\n> \n> Possibly squash patch 1 into this patch? The new struct/union\n> isn't used until here.\n\nYes, I can squash both patches. I sent them separated to make a quick\nintroduction of the new structure in first patch but as you pointed\nout, it is better to squash them.\n\n> \n> Yours,\n> Linus Walleij\n\nRegards,\n\nJavier R.","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=duagon.com header.i=@duagon.com header.a=rsa-sha256\n header.s=selector1 header.b=Mf7WS6Eh;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-gpio+bounces-34983-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (1024-bit key) header.d=duagon.com header.i=@duagon.com\n 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pr=C","X-SEPP-Suspect":"ada016998396411a89cef8c7b6f74bd1","Date":"Fri, 10 Apr 2026 09:10:09 +0200","From":"Jose Javier Rodriguez Barbarin ","To":"Linus Walleij ","Cc":"brgl@kernel.org, linux-gpio@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org","Subject":"Re: [RFC PATCH 4/5] gpio: mmio: convert accessors to generic\n register descriptors","Message-ID":"","References":"<20260407184805.807328-1-dev-josejavier.rodriguez@duagon.com>\n <20260407184805.807328-5-dev-josejavier.rodriguez@duagon.com>\n ","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","Content-Transfer-Encoding":"8bit","In-Reply-To":"\n ","X-ClientProxiedBy":"MR1P264CA0170.FRAP264.PROD.OUTLOOK.COM\n (2603:10a6:501:55::18) To ZRAP278MB0525.CHEP278.PROD.OUTLOOK.COM\n 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