[{"id":3189474,"web_url":"http://patchwork.ozlabs.org/comment/3189474/","msgid":"<169591034632.1624130.7939810399934804656.b4-ty@kernel.org>","list_archive_url":null,"date":"2023-09-28T14:12:26","subject":"Re: (subset) [PATCH v2 0/3] Rewrite GPIO LED trigger to use\n trigger-sources","submitter":{"id":65833,"url":"http://patchwork.ozlabs.org/api/people/65833/","name":"Lee Jones","email":"lee@kernel.org"},"content":"On Tue, 26 Sep 2023 23:48:10 +0200, Linus Walleij wrote:\n> This rewrites the platform-data GPIO LED trigger to instead\n> use fwnode trigger-sources to describe the LED used.\n> \n> This will work out-of-the-box with e.g. device tree.\n> \n> Tested with real hardware by modifying a device tree adding\n> trigger-sources to a LED and trigger-source-cells to\n> a gpio chip, setting the trigger to a pushbutton. It works\n> like a charm, once the trigger is set to \"gpio\".\n> \n> [...]\n\nApplied, thanks!\n\n[2/3] dt-bindings: leds: Mention GPIO triggers\n commit: 4aa583f1a6b85c88e3278d2461797d592ac61fcc\n[3/3] leds: triggers: gpio: Rewrite to use trigger-sources\n commit: 1222f5dbc7723cc78741343da2e414b80de83c8f\n\n--\nLee Jones [李琼斯]","headers":{"Return-Path":"\n ","X-Original-To":["incoming-dt@patchwork.ozlabs.org","devicetree@vger.kernel.org"],"Delivered-To":"patchwork-incoming-dt@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=pfSTfRbX;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=permerror (SPF Permanent Error: More than 10 MX records returned)\n smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45e3:2400::1;\n helo=sv.mirrors.kernel.org;\n envelope-from=devicetree+bounces-4302-incoming-dt=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from sv.mirrors.kernel.org (sv.mirrors.kernel.org\n [IPv6:2604:1380:45e3:2400::1])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange X25519 server-signature ECDSA (secp384r1))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4RxFmd02CSz1yp0\n\tfor ;\n Fri, 29 Sep 2023 00:12:32 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sv.mirrors.kernel.org (Postfix) with ESMTP id 75F12282032\n\tfor ; Thu, 28 Sep 2023 14:12:31 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 657C738BB7;\n\tThu, 28 Sep 2023 14:12:29 +0000 (UTC)","from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E9C934194\n\tfor ; Thu, 28 Sep 2023 14:12:29 +0000 (UTC)","by smtp.kernel.org (Postfix) with ESMTPSA id 982BFC433C8;\n\tThu, 28 Sep 2023 14:12:26 +0000 (UTC)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1695910348;\n\tbh=wtGe4SsbGGcWY1/IDsDw79ZQnLnIek+nUMtbOAOYDhM=;\n\th=From:To:Cc:In-Reply-To:References:Subject:Date:From;\n\tb=pfSTfRbXDXPGTcCYn+1RDdOLPiFjsTqIybxiXnvRHC3TAzghtBnkAiU0YGjhlepS7\n\t 9bTekmGi1Cf4YkHVs/dZA0+xPlOXVZrHvgnnbIFQF8TrJ2q6sqSf0TY/q9z5M7Qm+U\n\t csKesPMUaNsHT0BZBADqCQ4lphHqBF66z5h3YeV2m1b+5sDMuKqOzQVsunhHG0qV35\n\t Xe6DecmygpDEuDIC8SAnvWBsRV8NO7ElK6W1dCGDGStTZeJBynsIfaNMaZWvKREyJB\n\t oDZpuJ2wXu0+4VhWwhjk854ex+9it60dDZc2rCDu1SpL6G7IhADS5fCxCJrbkt4OUl\n\t 1rtVXf39UPpcA==","From":"Lee Jones ","To":"=?utf-8?q?Jan_Kundr=C3=A1t?= ,\n Pavel Machek , Lee Jones ,\n Rob Herring ,\n Krzysztof Kozlowski ,\n Conor Dooley ,\n Jacek Anaszewski ,\n Linus Walleij ","Cc":"linux-leds@vger.kernel.org, linux-gpio@vger.kernel.org,\n devicetree@vger.kernel.org, Conor Dooley ","In-Reply-To":"<20230926-gpio-led-trigger-dt-v2-0-e06e458b788e@linaro.org>","References":"<20230926-gpio-led-trigger-dt-v2-0-e06e458b788e@linaro.org>","Subject":"Re: (subset) [PATCH v2 0/3] Rewrite GPIO LED trigger to use\n trigger-sources","Message-Id":"<169591034632.1624130.7939810399934804656.b4-ty@kernel.org>","Date":"Thu, 28 Sep 2023 15:12:26 +0100","Precedence":"bulk","X-Mailing-List":"devicetree@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"8bit","X-Mailer":"b4 0.12.2"}},{"id":3189729,"web_url":"http://patchwork.ozlabs.org/comment/3189729/","msgid":"","list_archive_url":null,"date":"2023-09-28T21:15:06","subject":"Re: [PATCH v2 1/3] gpiolib: of: Allow \"trigger-sources\" to reference\n a GPIO","submitter":{"id":7055,"url":"http://patchwork.ozlabs.org/api/people/7055/","name":"Linus Walleij","email":"linus.walleij@linaro.org"},"content":"On Tue, Sep 26, 2023 at 11:48 PM Linus Walleij wrote:\n\n> The \"trigger-sources\" phandle used for LED triggers are special:\n> the DT bindings mandate that such triggers have the same phandle\n> references no matter what the trigger is. A GPIO is just another\n> kind of device that can trigger a LED.\n>\n> Signed-off-by: Linus Walleij \n\nBartosz could you queue this patch? Lee already queued patches 2+3,\nand there is just runtime dependency with no in-tree users so it's fine\nto merge them in the different trees.\n\nSorry for missing to CC you directly on the set :/\n\nYours,\nLinus Walleij","headers":{"Return-Path":"\n ","X-Original-To":["incoming-dt@patchwork.ozlabs.org","devicetree@vger.kernel.org"],"Delivered-To":"patchwork-incoming-dt@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=V3QrO3PK;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=permerror (SPF Permanent Error: More than 10 MX records returned)\n smtp.mailfrom=vger.kernel.org (client-ip=139.178.88.99;\n helo=sv.mirrors.kernel.org;\n envelope-from=devicetree+bounces-4413-incoming-dt=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from sv.mirrors.kernel.org (sv.mirrors.kernel.org [139.178.88.99])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange X25519 server-signature ECDSA (secp384r1))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4RxR8X17PCz1ypf\n\tfor ;\n Fri, 29 Sep 2023 07:15:24 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sv.mirrors.kernel.org (Postfix) with ESMTP id 84FE828379B\n\tfor ; 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Thu, 28\n Sep 2023 14:15:17 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"devicetree@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"<20230926-gpio-led-trigger-dt-v2-0-e06e458b788e@linaro.org>\n <20230926-gpio-led-trigger-dt-v2-1-e06e458b788e@linaro.org>","In-Reply-To":"<20230926-gpio-led-trigger-dt-v2-1-e06e458b788e@linaro.org>","From":"Linus Walleij ","Date":"Thu, 28 Sep 2023 23:15:06 +0200","Message-ID":"\n ","Subject":"Re: [PATCH v2 1/3] gpiolib: of: Allow \"trigger-sources\" to reference\n a GPIO","To":"=?utf-8?q?Jan_Kundr=C3=A1t?= ,\n Pavel Machek , Lee Jones ,\n Rob Herring ,\n Krzysztof Kozlowski ,\n Conor Dooley ,\n Jacek Anaszewski ,\n Bartosz Golaszewski ","Cc":"linux-leds@vger.kernel.org, linux-gpio@vger.kernel.org,\n\tdevicetree@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","X-Spam-Status":"No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED,\n\tSPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6","X-Spam-Checker-Version":"SpamAssassin 3.4.6 (2021-04-09) on\n\tlindbergh.monkeyblade.net"}},{"id":3190969,"web_url":"http://patchwork.ozlabs.org/comment/3190969/","msgid":"","list_archive_url":null,"date":"2023-10-02T07:45:58","subject":"Re: [PATCH v2 1/3] gpiolib: of: Allow \"trigger-sources\" to reference\n a GPIO","submitter":{"id":71346,"url":"http://patchwork.ozlabs.org/api/people/71346/","name":"Bartosz Golaszewski","email":"brgl@bgdev.pl"},"content":"On Wed, Sep 27, 2023 at 12:41 AM Linus Walleij wrote:\n>\n> The \"trigger-sources\" phandle used for LED triggers are special:\n> the DT bindings mandate that such triggers have the same phandle\n> references no matter what the trigger is. A GPIO is just another\n> kind of device that can trigger a LED.\n>\n> Signed-off-by: Linus Walleij \n> ---\n> drivers/gpio/gpiolib-of.c | 28 ++++++++++++++++++++++++++++\n> 1 file changed, 28 insertions(+)\n>\n> diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c\n> index 531faabead0f..f4a660bf11fd 100644\n> --- a/drivers/gpio/gpiolib-of.c\n> +++ b/drivers/gpio/gpiolib-of.c\n> @@ -611,6 +611,33 @@ static struct gpio_desc *of_find_mt2701_gpio(struct device_node *np,\n> return desc;\n> }\n>\n> +/*\n> + * Trigger sources are special, they allow us to use any GPIO as a LED trigger\n> + * and have the name \"trigger-sources\" no matter which kind of phandle it is\n> + * pointing to, whether to a GPIO, a USB host, a network PHY etc. So in this case\n> + * we allow looking something up that is not named \"foo-gpios\".\n> + */\n> +static struct gpio_desc *of_find_trigger_gpio(struct device_node *np,\n> + const char *con_id,\n> + unsigned int idx,\n> + enum of_gpio_flags *of_flags)\n> +{\n> + struct gpio_desc *desc;\n> +\n> + if (!IS_ENABLED(CONFIG_LEDS_TRIGGER_GPIO))\n> + return ERR_PTR(-ENOENT);\n> +\n> + if (!con_id || strcmp(con_id, \"trigger-sources\"))\n> + return ERR_PTR(-ENOENT);\n> +\n> + desc = of_get_named_gpiod_flags(np, con_id, idx, of_flags);\n> + if (!gpiod_not_found(desc))\n> + pr_debug(\"%s is used as a trigger\\n\", of_node_full_name(np));\n> +\n> + return desc;\n> +}\n> +\n> +\n> typedef struct gpio_desc *(*of_find_gpio_quirk)(struct device_node *np,\n> const char *con_id,\n> unsigned int idx,\n> @@ -618,6 +645,7 @@ typedef struct gpio_desc *(*of_find_gpio_quirk)(struct device_node *np,\n> static const of_find_gpio_quirk of_find_gpio_quirks[] = {\n> of_find_gpio_rename,\n> of_find_mt2701_gpio,\n> + of_find_trigger_gpio,\n> NULL\n> };\n>\n>\n> --\n> 2.34.1\n>\n\nQueued, thanks!\n\nBart","headers":{"Return-Path":"\n ","X-Original-To":["incoming-dt@patchwork.ozlabs.org","devicetree@vger.kernel.org"],"Delivered-To":"patchwork-incoming-dt@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=bgdev-pl.20230601.gappssmtp.com\n header.i=@bgdev-pl.20230601.gappssmtp.com header.a=rsa-sha256\n header.s=20230601 header.b=SXOL3One;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=permerror (SPF Permanent Error: More than 10 MX records returned)\n smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45e3:2400::1;\n helo=sv.mirrors.kernel.org;\n envelope-from=devicetree+bounces-5025-incoming-dt=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from sv.mirrors.kernel.org (sv.mirrors.kernel.org\n [IPv6:2604:1380:45e3:2400::1])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4RzY1743Llz1yng\n\tfor ;\n Mon, 2 Oct 2023 18:46:19 +1100 (AEDT)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sv.mirrors.kernel.org (Postfix) with ESMTP id 512CC281B76\n\tfor ; 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Mon, 02 Oct\n 2023 00:46:09 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"devicetree@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"<20230926-gpio-led-trigger-dt-v2-0-e06e458b788e@linaro.org>\n <20230926-gpio-led-trigger-dt-v2-1-e06e458b788e@linaro.org>","In-Reply-To":"<20230926-gpio-led-trigger-dt-v2-1-e06e458b788e@linaro.org>","From":"Bartosz Golaszewski ","Date":"Mon, 2 Oct 2023 09:45:58 +0200","Message-ID":"\n ","Subject":"Re: [PATCH v2 1/3] gpiolib: of: Allow \"trigger-sources\" to reference\n a GPIO","To":"Linus Walleij ","Cc":"=?utf-8?q?Jan_Kundr=C3=A1t?= ,\n Pavel Machek , Lee Jones ,\n Rob Herring ,\n Krzysztof Kozlowski ,\n Conor Dooley ,\n Jacek Anaszewski , linux-leds@vger.kernel.org,\n linux-gpio@vger.kernel.org, devicetree@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","X-Spam-Status":"No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,\n\tDKIM_VALID,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham\n\tautolearn_force=no version=3.4.6","X-Spam-Checker-Version":"SpamAssassin 3.4.6 (2021-04-09) on\n\tlindbergh.monkeyblade.net"}}]