From patchwork Thu Sep 19 18:36:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 174093 Delivered-To: patch@linaro.org Received: by 2002:a92:7e96:0:0:0:0:0 with SMTP id q22csp1376927ill; Thu, 19 Sep 2019 11:34:34 -0700 (PDT) X-Google-Smtp-Source: APXvYqySQO6w4MnZbOCxru7nZDAKQvhaC6ItP88lTN5DJVO3FLXKdy1ZSj7R1vKG35AJc1wkz/b7 X-Received: by 2002:a17:906:2929:: with SMTP id v9mr15456843ejd.108.1568918074067; Thu, 19 Sep 2019 11:34:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568918074; cv=none; d=google.com; s=arc-20160816; b=XEGTKo0kgS+aMvgq3njJpzNRKuoKu27z7rhd/jNcC2qLswBFVtSNdayEjf5anKNCKX vPh52H9rfUrpu5HNFTLBN+j1O5UCTPNRCeg35992GR3le4ZT/Rq2t9hm/A7UoYzOyDCy +vjV3a9DGGe6smzB3lZPB4sbVqS4FFMsgDRGsS/Y093vwf+E9Ax9eCVftUcymZz3/svC TGH5fL4Fu6Qg3hts4cAjxS3Mok3CvBzFyY38oMgMZauBmEo0OoaPZW8ImXqR6gML7B/Q kBPk/x9IMVR+tdRIwyOK224h2HSEvSeMBlDuHppO7v6aWh7vXX8H2bFi3HcBmNb2qfnc qa0g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=akFQwtB+8wepT0KN3wLxQAM5VrWw2YHk7/wv8nkby20=; b=ieQ+o/jIcTXK8zpFv7Xbkmj53STXWl23TqO60/qu/uNnLr04962FcSSsiTUfmq4vcm xFiaZCMzbUwDcMChvU6b/p0b1Uz+G5s/yPq9lwCfwNk6pg8brE/GYa/w7lxlXPKYJZfz jHt0Huyaoyp+sRhgdSLzSLqBj6+EyGzsqs5a5wydSNsCqfCeq1PP9L0qhq1v8wUTjtgv h+sermnWO588qoQGFj9A9It09ytnEd6uKPGMMNE42H6r23wUBrW1k9hYmuU8H8G61/6G yKrEOKTbQfYWNc+8BpBner2j6mq5ivloOZEd6p0vZEdH9d0pD4dTgHzrcA/HirH4xgdP wzog== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b="oRe9E6y/"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i17si4908711ejy.374.2019.09.19.11.34.33; Thu, 19 Sep 2019 11:34:34 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b="oRe9E6y/"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392078AbfISSeL (ORCPT + 26 others); Thu, 19 Sep 2019 14:34:11 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:50530 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732815AbfISSeL (ORCPT ); Thu, 19 Sep 2019 14:34:11 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY7c7112788; Thu, 19 Sep 2019 13:34:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1568918047; bh=akFQwtB+8wepT0KN3wLxQAM5VrWw2YHk7/wv8nkby20=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=oRe9E6y/9LTAuKoAq0BztXONV2RRYzmn76pkNoryyhExi5CLxAgOfedRwXYFejABz wcXJ97bef9Sj2cJN6eEwGal5edYyXFhdP0ZRJGKpR4zdDuoCgbPMeGP/Qc00JuzhDd iV04cbUay+xwVNbS3VUBdzZVnIomW4hJ183km/h4= Received: from DLEE109.ent.ti.com (dlee109.ent.ti.com [157.170.170.41]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x8JIY71P107971 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 19 Sep 2019 13:34:07 -0500 Received: from DLEE104.ent.ti.com (157.170.170.34) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 19 Sep 2019 13:34:02 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 19 Sep 2019 13:34:03 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY6YC095536; Thu, 19 Sep 2019 13:34:06 -0500 From: Dan Murphy To: , CC: , , Dan Murphy Subject: [PATCH v7 2/9] documention: leds: Add multicolor class documentation Date: Thu, 19 Sep 2019 13:36:50 -0500 Message-ID: <20190919183657.1339-3-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20190919183657.1339-1-dmurphy@ti.com> References: <20190919183657.1339-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the support documentation on the multicolor LED framework. This document defines the directores and file generated by the multicolor framework. It also documents usage. Signed-off-by: Dan Murphy --- Documentation/leds/index.rst | 1 + Documentation/leds/leds-class-multicolor.rst | 91 ++++++++++++++++++++ 2 files changed, 92 insertions(+) create mode 100644 Documentation/leds/leds-class-multicolor.rst -- 2.22.0.214.g8dca754b1e diff --git a/Documentation/leds/index.rst b/Documentation/leds/index.rst index 060f4e485897..bc70c6aa7138 100644 --- a/Documentation/leds/index.rst +++ b/Documentation/leds/index.rst @@ -9,6 +9,7 @@ LEDs leds-class leds-class-flash + leds-class-multicolor ledtrig-oneshot ledtrig-transient ledtrig-usbport diff --git a/Documentation/leds/leds-class-multicolor.rst b/Documentation/leds/leds-class-multicolor.rst new file mode 100644 index 000000000000..063c9a411a1d --- /dev/null +++ b/Documentation/leds/leds-class-multicolor.rst @@ -0,0 +1,91 @@ +==================================== +Multi Color LED handling under Linux +==================================== + +Description +=========== +There are varying monochrome LED colors available for application. These +LEDs can be used as a single use case LED or can be mixed with other color +LEDs to produce the full spectrum of color. Color LEDs that are grouped +can be presented under a single LED node with individual color control. +The multicolor class groups these LEDs and allows dynamically setting the value +of a single LED or setting the intensity values of the LEDs in the group and +updating the LEDs virtually simultaneously. + +Multicolor Class Control +======================== +The multicolor class presents the LED groups under a directory called "colors". +This directory is a child under the LED parent node created by the led_class +framework. The led_class framework is documented in led-class.rst within this +documentation directory. + +Each colored LED will have two files created under the colors directory +_intensity and _max_intensity. These files will contain +one of LED_COLOR_ID_* definitions from the header +include/dt-bindings/leds/common.h. + +Directory Layout Example +======================== +root:/sys/class/leds/rgb:grouped_leds# ls -lR colors/ +-rw-rwxr-- 1 root root 4096 Jul 7 03:10 red_max_intensity +--w--wx-w- 1 root root 4096 Jul 7 03:10 red_intensity +-rw-rwxr-- 1 root root 4096 Jul 7 03:10 green_max_intensity +--w--wx-w- 1 root root 4096 Jul 7 03:10 green_intensity +-rw-rwxr-- 1 root root 4096 Jul 7 03:10 blue_max_intensity +--w--wx-w- 1 root root 4096 Jul 7 03:10 blue_intensity + +Multicolor Class Brightness Control +=================================== +The multiclor class framework will calculate each monochrome LEDs intensity. + +The brightness level for each LED is calculated based on the color LED +intensity setting divided by the color LED max intensity setting multiplied by +the requested value. + +led_brightness = requested_value * led_color_intensity/led_color_max_intensity + +Example: +Three LEDs are present in the group as defined in "Directory Layout Example" +within this document. + +A user first writes the color LED brightness file with the brightness level that +is necessary to achieve a blueish violet output from the RGB LED group. + +echo 138 > /sys/class/leds/rgb:grouped_leds/red_intensity +echo 43 > /sys/class/leds/rgb:grouped_leds/green_intensity +echo 226 > /sys/class/leds/rgb:grouped_leds/blue_intensity + +red - + intensity = 138 + max_intensity = 255 +green - + intensity = 43 + max_intensity = 255 +blue - + intensity = 226 + max_intensity = 255 + +The user can control the brightness of that RGB group by writing the parent +'brightness' control. Assuming a parent max_brightness of 255 the user may want +to dim the LED color group to half. The user would write a value of 128 to the +parent brightness file then the values written to each LED will be adjusted +base on this value + +cat /sys/class/leds/rgb:grouped_leds/max_brightness +255 +echo 128 > /sys/class/leds/rgb:grouped_leds/brightness + +adjusted_red_value = 128 * 138/255 = 69 +adjusted_green_value = 128 * 43/255 = 21 +adjusted_blue_value = 128 * 226/255 = 113 + +Reading the parent brightness file will return the current brightness value of +the color LED group. + +cat /sys/class/leds/rgb:grouped_leds/max_brightness +255 + +echo 128 > /sys/class/leds/rgb:grouped_leds/brightness + +cat /sys/class/leds/rgb:grouped_leds/max_brightness +128 From patchwork Thu Sep 19 18:36:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 174092 Delivered-To: patch@linaro.org Received: by 2002:a92:7e96:0:0:0:0:0 with SMTP id q22csp1376756ill; Thu, 19 Sep 2019 11:34:24 -0700 (PDT) X-Google-Smtp-Source: APXvYqxEaXekv7tVZwpS5dJIqDfYqcB7HJHmDQXTFi6KA0CEZ1TPnYWajby7ylSH+z2Z6XnwF4yx X-Received: by 2002:a05:6402:13c2:: with SMTP id a2mr17423161edx.21.1568918064465; Thu, 19 Sep 2019 11:34:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568918064; cv=none; d=google.com; s=arc-20160816; b=z2Bq1AIjVBaaibBwngne9snl5SyKmnSFsr9K2HZRT5j8fCtVjOa/4Bpv4nqqMFye9X 4Yjah3nmf4BYzIAXd/jYhAVC//Mgf9+d6rvsFxkbYhH1+ML9eaj0RqSAWDto/mzjx7Ac 16vPOKGO1rHc6MdUAqYANHN23SvXLpW35SY6fun1ms5+fOBRL7wU5rF6xj/Rz62wRRSZ U6d2BwAEdYZR17HdFbxtggRpi5ie8P86XNoxdj4IPPOtZKhDsm5LzJ+gV8kNM+4A+CbY k441KTV3nqaler9crNMqdpTHrhTNXHCGyOOMiQwD+zmVzFaDb3Gd1S6X0jsNRuvljvHm CsaA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=zV3cVdmjhCBXzQdA/5xCOaiT1n6XKbwdMaP1jdy4goo=; b=En6tvCsjb76tF/Br0gAlwEgcTni6NWDaWbXMf3VwT2W09VM6Cq9cFRHS2SgHeWxksE wlvOMTqnf3gXlvpnvONxJ7upTES0XrAIvOe6lQ4X3Ji2/NGtEtSbvG5f4cQ1Hrq4bICM ayfrPN4ITQAs6+LB4Z+VEJrhmjCVwQPw0a8bkrX8ClbDxR9ubKsMNjQLMaRJsKECD1j6 yyBD1cPrxN5NzzhFNROW3aVExpg+sWOooQc17juQPxydptJ3KvJVGHppRmGRfmmEWUK+ lQF/0jC7U299DXQATVfUPo52a+eL44018ADzBmpNX9//AhCx7+z+f2fSoPcuzSwJ7u1R rRUA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=lz0S0kCz; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h43si5889356ede.142.2019.09.19.11.34.24; Thu, 19 Sep 2019 11:34:24 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=lz0S0kCz; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392093AbfISSeM (ORCPT + 26 others); Thu, 19 Sep 2019 14:34:12 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:58386 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732640AbfISSeL (ORCPT ); Thu, 19 Sep 2019 14:34:11 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY74v087620; Thu, 19 Sep 2019 13:34:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1568918047; bh=zV3cVdmjhCBXzQdA/5xCOaiT1n6XKbwdMaP1jdy4goo=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=lz0S0kCzIoJP2BeonPpYMwLbTRbe3SDCvuVxry29ZzL/rOD9V9P9Fh9PwyUvApeC9 EqiH4x2NmnK67hwgJepyE7qWO24QU7+5JKO5mXiGjFEQeuyGAxlOhBgjqp8dic/YO8 Xd2L+spuGB+iaBb7EtOIJm29r/hKTQbs3gZyA67E= Received: from DLEE114.ent.ti.com (dlee114.ent.ti.com [157.170.170.25]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY703100297; Thu, 19 Sep 2019 13:34:07 -0500 Received: from DLEE100.ent.ti.com (157.170.170.30) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 19 Sep 2019 13:34:03 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE100.ent.ti.com (157.170.170.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 19 Sep 2019 13:34:07 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY7KU009786; Thu, 19 Sep 2019 13:34:07 -0500 From: Dan Murphy To: , CC: , , Dan Murphy Subject: [PATCH v7 4/9] dt-bindings: leds: Add multicolor ID to the color ID list Date: Thu, 19 Sep 2019 13:36:52 -0500 Message-ID: <20190919183657.1339-5-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20190919183657.1339-1-dmurphy@ti.com> References: <20190919183657.1339-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a new color ID that is declared as MULTICOLOR as with the multicolor framework declaring a definitive color is not accurate as the node can contain multiple colors. Signed-off-by: Dan Murphy --- include/dt-bindings/leds/common.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 2.22.0.214.g8dca754b1e diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h index 9e1256a7c1bf..7006d15f71e8 100644 --- a/include/dt-bindings/leds/common.h +++ b/include/dt-bindings/leds/common.h @@ -29,7 +29,8 @@ #define LED_COLOR_ID_VIOLET 5 #define LED_COLOR_ID_YELLOW 6 #define LED_COLOR_ID_IR 7 -#define LED_COLOR_ID_MAX 8 +#define LED_COLOR_ID_MULTI 8 +#define LED_COLOR_ID_MAX 9 /* Standard LED functions */ #define LED_FUNCTION_ACTIVITY "activity" From patchwork Thu Sep 19 18:36:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 174090 Delivered-To: patch@linaro.org Received: by 2002:a92:7e96:0:0:0:0:0 with SMTP id q22csp1376725ill; Thu, 19 Sep 2019 11:34:22 -0700 (PDT) X-Google-Smtp-Source: APXvYqwzLfO/4nAaouO1ZDwpQ7O2T0TxXM3n/njMwHoepWGVWWU99CJUhNILmLru7th+xzEn1Pxh X-Received: by 2002:aa7:df16:: with SMTP id c22mr8623633edy.22.1568918062437; Thu, 19 Sep 2019 11:34:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568918062; cv=none; d=google.com; s=arc-20160816; b=vMAhTSIC3h8ZV7mtiNe6c5L2vPx8Xm9w4foSvMBvPeJBOeHZQXm40KSRnjb5qdZYIP 7t9R0OSSzQmDH0om2U6Jk7q68R77wNFyMENi2UCvFpPCvQQOxq/8YvW9RqgnLWckqpNl hNUBEyByYcm4cRRwhcqp5Xlj1H+suGKldfzXhhfnt+Prz4Z4+qBagKuwzr0xkYFb30Au Gs8WrBi8fpsXFrlVEjUqnLaW6GGukoHahiIds6qeUWGbIHO9XB3Yof3ECqroLYUyseOh zixWa8Pjz77hh9R0KTYD4HLrsnDuxriu5J8Ib4tQys0syrG3midWp0AdFEpzA8/B5w5w Ss1A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=vNLixCA7rV3r89geVpDyZT2afzJln66pkNhtKdigswM=; b=E1LsGASt9Uj9WZI+iW6BByJt4/dV5gTOoczw1ZMMEVT+sWz9huucmrFBvWDig/GEFk 4rV8jx/nXF019Ff3d3/hw6jrE2wtWgSS/7OrhWYYZ2aMCQGx12tfDioAaMZnbCvzpU4B XAOTiGNxdV5IQTGtfY2T6jdg/fGbDbA4Zqa9VPmHQna6G5KJPzkAwJ53hAV80AutS9wR IU2JRCtKAuTeKNvvO0e/lQzP/1lXKz4js/FF6vCECKhdj/80xzTmueSqlx85xrMm1bJQ SI03C8wq6vwJL4Z61Y/QdExEI07SN+1KS+Nma+M4ZWRnkulf6c8luwUNzVmWvTgBpe50 QCNw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b="i4y/DPvI"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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Signed-off-by: Dan Murphy --- drivers/leds/led-core.c | 1 + 1 file changed, 1 insertion(+) -- 2.22.0.214.g8dca754b1e diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c index f1f718dbe0f8..846248a0693d 100644 --- a/drivers/leds/led-core.c +++ b/drivers/leds/led-core.c @@ -34,6 +34,7 @@ const char * const led_colors[LED_COLOR_ID_MAX] = { [LED_COLOR_ID_VIOLET] = "violet", [LED_COLOR_ID_YELLOW] = "yellow", [LED_COLOR_ID_IR] = "ir", + [LED_COLOR_ID_MULTI] = "multicolor", }; EXPORT_SYMBOL_GPL(led_colors); From patchwork Thu Sep 19 18:36:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 174094 Delivered-To: patch@linaro.org Received: by 2002:a92:7e96:0:0:0:0:0 with SMTP id q22csp1376935ill; Thu, 19 Sep 2019 11:34:34 -0700 (PDT) X-Google-Smtp-Source: APXvYqyv8erMy1eQzWJOblGhU70Uv6tZysZVQYYZUubOQxQEI6DF1FUO6c8B2iAZABGSoni5x2aK X-Received: by 2002:a17:906:564b:: with SMTP id v11mr13244547ejr.225.1568918074638; Thu, 19 Sep 2019 11:34:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568918074; cv=none; d=google.com; s=arc-20160816; b=qlSyAOoTG3QGvYc+nIAyKRfoHmRYU5HCRqjUS+bOKnlRF4A8P5GZgJMDVMsuZnnW+l jZCrd95/s7SJnTaEmDao+N8puvQcw/Q94RTb7C9vL9mAngcdXLhnNcHpgTgm3ArpazCK Um5fs4GWMFKwUq1ND6/Cut4/twFSQynvgttyy9TpfeuKqHUdcqOW48K1U2oUbRD85Kog SyF8x5UYiBaJvyiqTFfjrZ5S1De9MQmaOxQ+PWhIOiO7WP8d/AYym2op1aEy7WPT6Tdp RSN/A4kp1d3NTzey9mlCGDAIf6wcVacH6rC3OyQJ2DVQixebyDyvc3lXLXdUSW4Zptqr Glbw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=vKi8C5n354SHX60t8oWt43xSwopNghELtkxaWbgCuSE=; b=P44CJT6G3Eoje7nqFvuX3RpzRvAImQcs967zMD9j3B8slt3BSngGaaOhK5+xgsMAIH 3eEQ53cXnu6Kwtl69GLMuZYvto+9XEy1o8WqNzpD6dwVPBEtF1EgZxbi4/TqPFfnRD6j T9PVIKOPP1k5/c9ZilI1HH1AlqYjdzkoE3r1JyknrwTJOHc/UUTd0u9j58TMR6SL7Dn+ oPfeuZx5qYINCp4LNUOMcR3HIpT2Y9mlzwt/VRnhRrpPIzkCoKH1LrR2mAjxLT2ZP7nJ xL/6JOJiM8InpAeihJAtB1STRqy2VwGoCJtC89dDVyADxJ8IP0532/ynvD7unN8V77yK r3LA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=GrM72pXD; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i17si4908711ejy.374.2019.09.19.11.34.34; Thu, 19 Sep 2019 11:34:34 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=GrM72pXD; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404066AbfISSec (ORCPT + 26 others); Thu, 19 Sep 2019 14:34:32 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:58388 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732713AbfISSeM (ORCPT ); Thu, 19 Sep 2019 14:34:12 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY8KE087624; Thu, 19 Sep 2019 13:34:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1568918048; bh=vKi8C5n354SHX60t8oWt43xSwopNghELtkxaWbgCuSE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=GrM72pXDIc9RJO/Lp1nA7TuXBxgqDSAzWA5AaqB8mBDPI6lbPZRTd3gyTUY2sTOmd VCTikg1j3INws5SAUyrrHHgCKjCH67bGLMk9ZCCHZVEvNmqvKNiDSZzR9mwkBq8HV+ GlcxHBxl/BMVft6rf94DH40kIWqDrEVSK5ABDlDQ= Received: from DFLE111.ent.ti.com (dfle111.ent.ti.com [10.64.6.32]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY88C100315; Thu, 19 Sep 2019 13:34:08 -0500 Received: from DFLE103.ent.ti.com (10.64.6.24) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 19 Sep 2019 13:34:03 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 19 Sep 2019 13:34:07 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY7oR034175; Thu, 19 Sep 2019 13:34:07 -0500 From: Dan Murphy To: , CC: , , Dan Murphy Subject: [PATCH v7 6/9] leds: multicolor: Introduce a multicolor class definition Date: Thu, 19 Sep 2019 13:36:54 -0500 Message-ID: <20190919183657.1339-7-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20190919183657.1339-1-dmurphy@ti.com> References: <20190919183657.1339-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce a multicolor class that groups colored LEDs within a LED node. The framework allows for dynamically setting individual LEDs or setting brightness levels of LEDs and updating them virtually simultaneously. Signed-off-by: Dan Murphy --- drivers/leds/Kconfig | 10 + drivers/leds/Makefile | 1 + drivers/leds/led-class-multicolor.c | 326 +++++++++++++++++++++++++++ include/linux/led-class-multicolor.h | 84 +++++++ 4 files changed, 421 insertions(+) create mode 100644 drivers/leds/led-class-multicolor.c create mode 100644 include/linux/led-class-multicolor.h -- 2.22.0.214.g8dca754b1e diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 1988de1d64c0..71e7fd4f6f15 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -30,6 +30,16 @@ config LEDS_CLASS_FLASH for the flash related features of a LED device. It can be built as a module. +config LEDS_CLASS_MULTI_COLOR + tristate "LED Mulit Color LED Class Support" + depends on LEDS_CLASS + help + This option enables the multicolor LED sysfs class in /sys/class/leds. + It wraps LED class and adds multicolor LED specific sysfs attributes + and kernel internal API to it. You'll need this to provide support + for multicolor LEDs that are grouped together. This class is not + intended for single color LEDs. It can be built as a module. + config LEDS_BRIGHTNESS_HW_CHANGED bool "LED Class brightness_hw_changed attribute support" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 41fb073a39c1..897b810257dd 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_NEW_LEDS) += led-core.o obj-$(CONFIG_LEDS_CLASS) += led-class.o obj-$(CONFIG_LEDS_CLASS_FLASH) += led-class-flash.o +obj-$(CONFIG_LEDS_CLASS_MULTI_COLOR) += led-class-multicolor.o obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o # LED Platform Drivers diff --git a/drivers/leds/led-class-multicolor.c b/drivers/leds/led-class-multicolor.c new file mode 100644 index 000000000000..e5153b695882 --- /dev/null +++ b/drivers/leds/led-class-multicolor.c @@ -0,0 +1,326 @@ +// SPDX-License-Identifier: GPL-2.0 +// LED Multi Color class interface +// Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ + +#include +#include +#include +#include +#include +#include + +#include "leds.h" + +#define INTENSITY_NAME "_intensity" +#define MAX_INTENSITY_NAME "_max_intensity" + +struct led_mc_color_entry { + struct led_classdev_mc *mcled_cdev; + + struct device_attribute max_intensity_attr; + struct device_attribute intensity_attr; + + enum led_brightness max_intensity; + enum led_brightness intensity; + + struct list_head list; + + int led_color_id; +}; + +void led_mc_calc_brightness(struct led_classdev_mc *mcled_cdev, + enum led_brightness brightness, + int brightness_val[]) +{ + struct led_classdev_mc_data *data = mcled_cdev->data; + struct led_mc_color_entry *priv; + int i = 0; + + list_for_each_entry(priv, &data->color_list, list) { + brightness_val[i] = brightness * + priv->intensity / priv->max_intensity; + i++; + } +} +EXPORT_SYMBOL_GPL(led_mc_calc_brightness); + +static ssize_t intensity_store(struct device *dev, + struct device_attribute *intensity_attr, + const char *buf, size_t size) +{ + struct led_mc_color_entry *priv = container_of(intensity_attr, + struct led_mc_color_entry, + intensity_attr); + struct led_classdev_mc_data *data = priv->mcled_cdev->data; + struct led_classdev_mc *mcled_cdev = data->mcled_cdev; + struct led_classdev *led_cdev = priv->mcled_cdev->led_cdev; + unsigned long value; + ssize_t ret; + + mutex_lock(&led_cdev->led_access); + + ret = kstrtoul(buf, 10, &value); + if (ret) + goto unlock; + + if (value > priv->max_intensity) { + ret = -EINVAL; + goto unlock; + } + + priv->intensity = value; + + if (mcled_cdev->ops) { + ret = mcled_cdev->ops->set_color_brightness(mcled_cdev, + priv->led_color_id, + priv->intensity); + if (ret) + goto unlock; + } + + ret = size; + +unlock: + mutex_unlock(&led_cdev->led_access); + return ret; +} + +static ssize_t intensity_show(struct device *dev, + struct device_attribute *intensity_attr, + char *buf) +{ + struct led_mc_color_entry *priv = container_of(intensity_attr, + struct led_mc_color_entry, + intensity_attr); + const struct led_multicolor_ops *ops = priv->mcled_cdev->ops; + int value = 0; + + if (ops->get_color_brightness) { + value = ops->get_color_brightness(priv->mcled_cdev, + priv->led_color_id); + priv->intensity = value; + } else { + value = priv->intensity; + } + + return sprintf(buf, "%d\n", value); +} + +static ssize_t max_intensity_show(struct device *dev, + struct device_attribute *max_intensity_attr, + char *buf) +{ + struct led_mc_color_entry *priv = container_of(max_intensity_attr, + struct led_mc_color_entry, + max_intensity_attr); + + return sprintf(buf, "%d\n", priv->max_intensity); +} + +static struct attribute *led_color_attrs[] = { + NULL, +}; + +static struct attribute_group led_color_group = { + .name = "colors", + .attrs = led_color_attrs, +}; + +static int led_multicolor_init_color(struct led_classdev_mc_data *data, + struct led_classdev_mc *mcled_cdev, + int color_id, int color_index) +{ + struct led_classdev *led_cdev = mcled_cdev->led_cdev; + struct led_mc_color_entry *mc_priv; + char *intensity_file_name; + char *max_intensity_file_name; + size_t len; + int ret; + + mc_priv = devm_kzalloc(led_cdev->dev, sizeof(*mc_priv), GFP_KERNEL); + if (!mc_priv) + return -ENOMEM; + + mc_priv->led_color_id = color_id; + mc_priv->mcled_cdev = mcled_cdev; + + sysfs_attr_init(&mc_priv->intensity_attr.attr); + len = strlen(led_colors[color_id]) + strlen(INTENSITY_NAME) + 1; + intensity_file_name = kzalloc(len, GFP_KERNEL); + if (!intensity_file_name) { + ret = -ENOMEM; + goto err_out; + } + + snprintf(intensity_file_name, len, "%s%s", + led_colors[color_id], INTENSITY_NAME); + mc_priv->intensity_attr.attr.name = intensity_file_name; + mc_priv->intensity_attr.attr.mode = 666; + mc_priv->intensity_attr.store = intensity_store; + mc_priv->intensity_attr.show = intensity_show; + ret = sysfs_add_file_to_group(&led_cdev->dev->kobj, + &mc_priv->intensity_attr.attr, + led_color_group.name); + if (ret) + goto intensity_err_out; + + sysfs_attr_init(&mc_priv->max_intensity_attr.attr); + len = strlen(led_colors[color_id]) + strlen(MAX_INTENSITY_NAME) + 1; + max_intensity_file_name = kzalloc(len, GFP_KERNEL); + if (!max_intensity_file_name) { + ret = -ENOMEM; + goto intensity_err_out; + } + + snprintf(max_intensity_file_name, len, "%s%s", + led_colors[color_id], MAX_INTENSITY_NAME); + mc_priv->max_intensity_attr.attr.name = max_intensity_file_name; + mc_priv->max_intensity_attr.attr.mode = 444; + mc_priv->max_intensity_attr.show = max_intensity_show; + ret = sysfs_add_file_to_group(&led_cdev->dev->kobj, + &mc_priv->max_intensity_attr.attr, + led_color_group.name); + if (ret) + goto max_intensity_err_out; + + mc_priv->max_intensity = LED_FULL; + list_add_tail(&mc_priv->list, &data->color_list); + +max_intensity_err_out: + kfree(max_intensity_file_name); +intensity_err_out: + kfree(intensity_file_name); +err_out: + return ret; +} + +static int led_multicolor_init_color_dir(struct led_classdev_mc_data *data, + struct led_classdev_mc *mcled_cdev) +{ + struct led_classdev *led_cdev = mcled_cdev->led_cdev; + u32 color_id; + int ret; + int i, j = 0; + + data->mcled_cdev = mcled_cdev; + + ret = sysfs_create_group(&led_cdev->dev->kobj, &led_color_group); + if (ret) + return ret; + + for (i = 0; i < LED_COLOR_ID_MAX; i++) { + color_id = (mcled_cdev->available_colors & (1 << i)); + if (color_id) { + ret = led_multicolor_init_color(data, mcled_cdev, i, j); + if (ret) + break; + + j++; + } + } + + return ret; +} + +int led_classdev_multicolor_register_ext(struct device *parent, + struct led_classdev_mc *mcled_cdev, + struct led_init_data *init_data) +{ + struct led_classdev *led_cdev; + struct led_classdev_mc_data *data; + int ret; + + if (!mcled_cdev) + return -EINVAL; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + mcled_cdev->data = data; + led_cdev = mcled_cdev->led_cdev; + INIT_LIST_HEAD(&data->color_list); + + /* Register led class device */ + ret = led_classdev_register_ext(parent, led_cdev, init_data); + if (ret) + return ret; + + return led_multicolor_init_color_dir(data, mcled_cdev); +} +EXPORT_SYMBOL_GPL(led_classdev_multicolor_register_ext); + +void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) +{ + if (!mcled_cdev) + return; + + sysfs_remove_group(&mcled_cdev->led_cdev->dev->kobj, &led_color_group); + led_classdev_unregister(mcled_cdev->led_cdev); +} +EXPORT_SYMBOL_GPL(led_classdev_multicolor_unregister); + +static void devm_led_classdev_multicolor_release(struct device *dev, void *res) +{ + led_classdev_multicolor_unregister(*(struct led_classdev_mc **)res); +} + +/** + * devm_of_led_classdev_register - resource managed led_classdev_register() + * + * @parent: parent of LED device + * @led_cdev: the led_classdev structure for this device. + */ +int devm_led_classdev_multicolor_register(struct device *parent, + struct led_classdev_mc *mcled_cdev) +{ + struct led_classdev_mc **dr; + int ret; + + dr = devres_alloc(devm_led_classdev_multicolor_release, + sizeof(*dr), GFP_KERNEL); + if (!dr) + return -ENOMEM; + + ret = led_classdev_multicolor_register(parent, mcled_cdev); + if (ret) { + devres_free(dr); + return ret; + } + + *dr = mcled_cdev; + devres_add(parent, dr); + + return 0; +} +EXPORT_SYMBOL_GPL(devm_led_classdev_multicolor_register); + +static int devm_led_classdev_multicolor_match(struct device *dev, + void *res, void *data) +{ + struct mcled_cdev **p = res; + + if (WARN_ON(!p || !*p)) + return 0; + + return *p == data; +} + +/** + * devm_led_classdev_multicolor_unregister() - resource managed + * led_classdev_multicolor_unregister() + * @parent: The device to unregister. + * @mcled_cdev: the led_classdev_mc structure for this device. + */ +void devm_led_classdev_multicolor_unregister(struct device *dev, + struct led_classdev_mc *mcled_cdev) +{ + WARN_ON(devres_release(dev, + devm_led_classdev_multicolor_release, + devm_led_classdev_multicolor_match, mcled_cdev)); +} +EXPORT_SYMBOL_GPL(devm_led_classdev_multicolor_unregister); + +MODULE_AUTHOR("Dan Murphy "); +MODULE_DESCRIPTION("Multi Color LED class interface"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/led-class-multicolor.h b/include/linux/led-class-multicolor.h new file mode 100644 index 000000000000..fa8ff720a258 --- /dev/null +++ b/include/linux/led-class-multicolor.h @@ -0,0 +1,84 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* LED Multicolor class interface + * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#ifndef __LINUX_MULTICOLOR_LEDS_H_INCLUDED +#define __LINUX_MULTICOLOR_LEDS_H_INCLUDED + +#include +#include + +struct led_classdev_mc; + +struct led_classdev_mc_data { + struct led_classdev_mc *mcled_cdev; + struct list_head color_list; +}; + +struct led_multicolor_ops { + /* Set brightness for a specific color id */ + int (*set_color_brightness)(struct led_classdev_mc *mcled_cdev, + int color_id, int value); + /* Read current color setting */ + int (*get_color_brightness)(struct led_classdev_mc *mcled_cdev, + int color_id); +}; + +struct led_classdev_mc { + /* led class device */ + struct led_classdev *led_cdev; + + /* multicolor led specific ops */ + struct led_multicolor_ops *ops; + + struct led_classdev_mc_data *data; + + unsigned long available_colors; + int num_leds; +}; + +static inline struct led_classdev_mc *lcdev_to_mccdev( + struct led_classdev *lcdev) +{ + return container_of(lcdev, struct led_classdev_mc, led_cdev); +} + +/** + * led_classdev_multicolor_register_ext - register a new object of led_classdev + * class with support for multicolor LEDs + * @parent: the multicolor LED to register + * @mcled_cdev: the led_classdev_mc structure for this device + * @init_data: the LED class Multi color device initialization data + * + * Returns: 0 on success or negative error value on failure + */ +extern int led_classdev_multicolor_register_ext(struct device *parent, + struct led_classdev_mc *mcled_cdev, + struct led_init_data *init_data); + +#define led_classdev_multicolor_register(parent, mcled_cdev) \ + led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL) + +/** + * led_classdev_multicolor_unregister - unregisters an object of led_classdev + * class with support for multicolor LEDs + * @mcled_cdev: the multicolor LED to unregister + * + * Unregister a previously registered via led_classdev_multicolor_register + * object + */ +extern void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev); + +extern int devm_led_classdev_multicolor_register(struct device *parent, + struct led_classdev_mc *mcled_cdev); + +extern void devm_led_classdev_multicolor_unregister(struct device *parent, + struct led_classdev_mc *mcled_cdev); + +/* Set brightness for the monochrome LED cluster */ +extern void led_mc_calc_brightness(struct led_classdev_mc *mcled_cdev, + enum led_brightness brightness, + int brightness_val[]); + +#endif /* __LINUX_MULTICOLOR_LEDS_H_INCLUDED */ From patchwork Thu Sep 19 18:36:55 2019 Content-Type: text/plain; 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[209.132.180.67]) by mx.google.com with ESMTP id u3si5213373edy.48.2019.09.19.11.34.45; Thu, 19 Sep 2019 11:34:46 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=gYb5lHTO; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404271AbfISSem (ORCPT + 26 others); Thu, 19 Sep 2019 14:34:42 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:50532 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732804AbfISSeL (ORCPT ); Thu, 19 Sep 2019 14:34:11 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY8lO112814; Thu, 19 Sep 2019 13:34:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1568918048; bh=7rskmsTiAzvQ4NF4+vWKavl0uEPi2s+cxTAi1MuphJk=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=gYb5lHTOMM6N/qoU9FgirtlML4uVAGdurh4VMQig5JbkbEPGLx1f6ovV7txBDRYni qm1ZiicoopqjM74AeyMLNTqArwjWVVHg4NGYgjkSbnxJjeISZnfSTaVTY/j8EHiVzA jHDtyIzM860gU6bnylSNaIX1N5jwGWGFrtz6VhCw= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x8JIY8X4107077 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 19 Sep 2019 13:34:08 -0500 Received: from DLEE110.ent.ti.com (157.170.170.21) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 19 Sep 2019 13:34:07 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE110.ent.ti.com (157.170.170.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 19 Sep 2019 13:34:08 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY7rJ009806; Thu, 19 Sep 2019 13:34:07 -0500 From: Dan Murphy To: , CC: , , Dan Murphy Subject: [PATCH v7 7/9] dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers Date: Thu, 19 Sep 2019 13:36:55 -0500 Message-ID: <20190919183657.1339-8-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20190919183657.1339-1-dmurphy@ti.com> References: <20190919183657.1339-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce the bindings for the Texas Instruments LP5036, LP5030, LP5024, LP5018, LP5012 and LP5009 RGB LED device driver. The LP5036/30/24/18/12/9 can control RGB LEDs individually or as part of a control bank group. These devices have the ability to adjust the mixing control for the RGB LEDs to obtain different colors independent of the overall brightness of the LED grouping. Datasheet: http://www.ti.com/lit/ds/symlink/lp5012.pdf http://www.ti.com/lit/ds/symlink/lp5024.pdf http://www.ti.com/lit/ds/symlink/lp5036.pdf Signed-off-by: Dan Murphy --- .../devicetree/bindings/leds/leds-lp50xx.txt | 148 ++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-lp50xx.txt -- 2.22.0.214.g8dca754b1e diff --git a/Documentation/devicetree/bindings/leds/leds-lp50xx.txt b/Documentation/devicetree/bindings/leds/leds-lp50xx.txt new file mode 100644 index 000000000000..9d05f43042e0 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-lp50xx.txt @@ -0,0 +1,148 @@ +* Texas Instruments - LP5009/12/18/24/30/36 RGB LED driver + +The LP50XX is multi-channel, I2C RGB LED Drivers that can group RGB LEDs into +a LED group or control them individually. + +The difference in these RGB LED drivers is the number of supported RGB modules. + +Required parent properties: + - compatible: + "ti,lp5009" + "ti,lp5012" + "ti,lp5018" + "ti,lp5024" + "ti,lp5030" + "ti,lp5036" + - reg : I2C slave address + lp5009/12 - 0x28 + lp5018/24 - 0x28 + lp5030/36 - 0x30 + - #address-cells : 1 + - #size-cells : 0 + +Optional parent properties: + - enable-gpios : gpio pin to enable/disable the device. + - vled-supply : LED supply + +Required child properties: + - #address-cells : 1 + - #size-cells : 0 + - reg : This is the LED module number. + - color : see Documentation/devicetree/bindings/leds/common.txt + - function : see Documentation/devicetree/bindings/leds/common.txt + +Required child properties only is LED modules will be banked: + - ti,led-bank : This property denotes the LED module numbers that will + be controlled as a single RGB cluster. Each LED module + number will be controlled by a single LED class instance. + There can only be one instance of the ti,led-bank + property for each device node. + +Required grandchildren properties: + - reg : A single entry denoting the LED module that controls + the RGB cluster. + - color : see Documentation/devicetree/bindings/leds/leds-multicolor.txt + - led-sources : see Documentation/devicetree/bindings/leds/common.txt + +The LED outputs associated with the LED modules are defined in Table 1 of the +corresponding data sheets. + +LP5009 - 2 Total RGB cluster LED outputs 0-1 +LP5012 - 4 Total RGB cluster LED outputs 0-3 +LP5018 - 6 Total RGB cluster LED outputs 0-5 +LP5024 - 8 Total RGB cluster LED outputs 0-7 +LP5030 - 10 Total RGB cluster LED outputs 0-9 +LP5036 - 12 Total RGB cluster LED outputs 0-11 + +Optional child properties: + - label : see Documentation/devicetree/bindings/leds/common.txt + - linux,default-trigger : + see Documentation/devicetree/bindings/leds/common.txt + +Examples: +led-controller@29 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "ti,lp5024"; + reg = <0x29>; + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; + vled-supply = <&vmmcsd_fixed>; + + multi-led@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + color = ; + function = LED_FUNCTION_STATUS; + + led@3 { + reg = <3>; + color = ; + }; + + led@4 { + reg = <4>; + color = ; + }; + + led@5 { + reg = <5>; + color = ; + }; + }; + + multi-led@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + color = ; + function = LED_FUNCTION_STANDBY; + ti,led-bank = <2 3 5>; + + led@6 { + reg = <0x6>; + color = ; + led-sources = <6 9 15>; + }; + + led@7 { + reg = <0x7>; + color = ; + led-sources = <7 10 16>; + }; + + led@8 { + reg = <0x8>; + color = ; + led-sources = <8 11 17>; + }; + }; + + multi-led@4 { + #address-cells = <1>; + #size-cells = <0>; + reg = <4>; + color = ; + function = LED_FUNCTION_ACTIVITY; + + led@12 { + reg = <12>; + color = ; + }; + + led@13 { + reg = <13>; + color = ; + }; + + led@14 { + reg = <14>; + color = ; + }; + }; +}; + +For more product information please see the link below: +http://www.ti.com/lit/ds/symlink/lp5012.pdf +http://www.ti.com/lit/ds/symlink/lp5024.pdf +http://www.ti.com/lit/ds/symlink/lp5036.pdf From patchwork Thu Sep 19 18:36:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 174089 Delivered-To: patch@linaro.org Received: by 2002:a92:7e96:0:0:0:0:0 with SMTP id q22csp1376681ill; Thu, 19 Sep 2019 11:34:19 -0700 (PDT) X-Google-Smtp-Source: APXvYqzldshAhao3jOEjjPFci+mfL9E8LL3W9PB5jbCXuhj7qta8rdatrG6CglOyrgeS+PIWPTl4 X-Received: by 2002:a50:a8a2:: with SMTP id k31mr17313469edc.79.1568918059606; Thu, 19 Sep 2019 11:34:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568918059; cv=none; d=google.com; s=arc-20160816; b=yhb8G+WfY0rH12Y0AO+3UUqxL7hy9uepejNfjGmgIoM1c5ingTRisZVBzaZaj4MRaL vN6JbHgQYTepesB9SeFIDcox/Ovy1+jXhh1GSJ2yheNkUkei/43+hSZh4lYV1eocnfRT gqZLrNjJt1OEAb/cNB2OukjzXCyS5za0KNzo1fnzl6upaw8oIY6OQzdHz8MiPosY4ji/ LBHkdAT+esSHqCAjYtgIqfBtlnVwe1OW76BfCrAQP5G6inRTD7+6kguBai8V98U5BIq7 IOTWOjgeB/mMnp9tRcvlwmJw9hkQClPDdhebJSXqTpyHT+L1LWntMRTUVQQkdpUqVccz OPsA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=WAwXg/3AkePdT8YXqiwMjosgCdkY4MKxgDgTqj5RVm8=; b=oyAFiofExIkAzaZt3nobqBVTULR34Jg8Iwqtp9flcX1s6POMtTo99hJhy/Ffozm86r UDJah6vfqqT5TdO9hOcIjJReM8h114d8uTLwbtdlpIPtUltxBlSdwmaOamexXxQHTf9l K52lv9AcB6iFNjPNF6Slxk5IVcpi4gOYnAVuXu4ORh+csIOe+/p5UT65Qsyf3sj2CXcY LTZkc62magoF8d+OqMN+BW2UQA1OW8eku0cviPmVP0hZgrfLMpB72mQ4YY0bXjzeWR9T +zl+OcinwFId4K3s3CiR0MowDehsdlhkPFY/AW83izaHm49IAQiXijDHiN6J06SRmVEu NV8g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=KHjPHb8M; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h43si5889356ede.142.2019.09.19.11.34.19; Thu, 19 Sep 2019 11:34:19 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=KHjPHb8M; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392132AbfISSeQ (ORCPT + 26 others); Thu, 19 Sep 2019 14:34:16 -0400 Received: from lelv0142.ext.ti.com ([198.47.23.249]:41362 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732842AbfISSeN (ORCPT ); Thu, 19 Sep 2019 14:34:13 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY8x7043182; Thu, 19 Sep 2019 13:34:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1568918048; bh=WAwXg/3AkePdT8YXqiwMjosgCdkY4MKxgDgTqj5RVm8=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=KHjPHb8MBRvefzvFPQkvUxMcnICDe9773Ga4zvBv4zTlhJmXatwNuCqZJxhjfRWMC XzQTyVfDxCxuDJWP831KTjjd6d71jqV94zsOfihphvMqIYKEKbTFJHQ0Occsifm/3w YEMbNZ+U/V6YCz2k83CRojWYI/mUq7NaZo0uiZ0w= Received: from DFLE115.ent.ti.com (dfle115.ent.ti.com [10.64.6.36]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x8JIY8OS107090 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 19 Sep 2019 13:34:08 -0500 Received: from DFLE101.ent.ti.com (10.64.6.22) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 19 Sep 2019 13:34:04 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE101.ent.ti.com (10.64.6.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Thu, 19 Sep 2019 13:34:08 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8JIY8Jf095563; Thu, 19 Sep 2019 13:34:08 -0500 From: Dan Murphy To: , CC: , , Dan Murphy Subject: [PATCH v7 8/9] leds: lp50xx: Add the LP50XX family of the RGB LED driver Date: Thu, 19 Sep 2019 13:36:56 -0500 Message-ID: <20190919183657.1339-9-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20190919183657.1339-1-dmurphy@ti.com> References: <20190919183657.1339-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce the LP5036/30/24/18/12/9 RGB LED driver. The difference in these parts are the number of LED outputs where the: LP5036 can control 36 LEDs LP5030 can control 30 LEDs LP5024 can control 24 LEDs LP5018 can control 18 LEDs LP5012 can control 12 LEDs LP509 can control 9 LEDs The device has the ability to group LED output into control banks so that multiple LED banks can be controlled with the same mixing and brightness. Inversely the LEDs can also be controlled independently. Signed-off-by: Dan Murphy --- drivers/leds/Kconfig | 7 + drivers/leds/Makefile | 1 + drivers/leds/leds-lp50xx.c | 807 +++++++++++++++++++++++++++++++++++++ 3 files changed, 815 insertions(+) create mode 100644 drivers/leds/leds-lp50xx.c -- 2.22.0.214.g8dca754b1e Reported-by: kbuild test robot diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 71e7fd4f6f15..1041dfe8e354 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -350,6 +350,13 @@ config LEDS_LP3952 To compile this driver as a module, choose M here: the module will be called leds-lp3952. +config LEDS_LP50XX + tristate "LED Support for TI LP5036/30/24/18 LED driver chip" + depends on LEDS_CLASS && REGMAP_I2C + help + If you say yes here you get support for the Texas Instruments + LP5036, LP5030, LP5024 and LP5018 LED driver. + config LEDS_LP55XX_COMMON tristate "Common Driver for TI/National LP5521/5523/55231/5562/8501" depends on LEDS_LP5521 || LEDS_LP5523 || LEDS_LP5562 || LEDS_LP8501 diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 897b810257dd..438a5499f3ee 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_LEDS_GPIO_REGISTER) += leds-gpio-register.o obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o obj-$(CONFIG_LEDS_LP3944) += leds-lp3944.o obj-$(CONFIG_LEDS_LP3952) += leds-lp3952.o +obj-$(CONFIG_LEDS_LP50XX) += leds-lp50xx.o obj-$(CONFIG_LEDS_LP55XX_COMMON) += leds-lp55xx-common.o obj-$(CONFIG_LEDS_LP5521) += leds-lp5521.o obj-$(CONFIG_LEDS_LP5523) += leds-lp5523.o diff --git a/drivers/leds/leds-lp50xx.c b/drivers/leds/leds-lp50xx.c new file mode 100644 index 000000000000..8a6cb559112f --- /dev/null +++ b/drivers/leds/leds-lp50xx.c @@ -0,0 +1,807 @@ +// SPDX-License-Identifier: GPL-2.0 +// TI LP50XX LED chip family driver +// Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define LP50XX_DEV_CFG0 0x00 +#define LP50XX_DEV_CFG1 0x01 +#define LP50XX_LED_CFG0 0x02 + +/* LP5009 and LP5012 registers */ +#define LP5012_BNK_BRT 0x03 +#define LP5012_BNKA_CLR 0x04 +#define LP5012_BNKB_CLR 0x05 +#define LP5012_BNKC_CLR 0x06 +#define LP5012_LED0_BRT 0x07 +#define LP5012_LED1_BRT 0x08 +#define LP5012_LED2_BRT 0x09 +#define LP5012_LED3_BRT 0x0a +#define LP5012_OUT0_CLR 0x0b +#define LP5012_OUT1_CLR 0x0c +#define LP5012_OUT2_CLR 0x0d +#define LP5012_OUT3_CLR 0x0e +#define LP5012_OUT4_CLR 0x0f +#define LP5012_OUT5_CLR 0x10 +#define LP5012_OUT6_CLR 0x11 +#define LP5012_OUT7_CLR 0x12 +#define LP5012_OUT8_CLR 0x13 +#define LP5012_OUT9_CLR 0x14 +#define LP5012_OUT10_CLR 0x15 +#define LP5012_OUT11_CLR 0x16 +#define LP5012_RESET 0x17 + +/* LP5018 and LP5024 registers */ +#define LP5024_BNK_BRT 0x03 +#define LP5024_BNKA_CLR 0x04 +#define LP5024_BNKB_CLR 0x05 +#define LP5024_BNKC_CLR 0x06 +#define LP5024_LED0_BRT 0x07 +#define LP5024_LED1_BRT 0x08 +#define LP5024_LED2_BRT 0x09 +#define LP5024_LED3_BRT 0x0a +#define LP5024_LED4_BRT 0x0b +#define LP5024_LED5_BRT 0x0c +#define LP5024_LED6_BRT 0x0d +#define LP5024_LED7_BRT 0x0e + +#define LP5024_OUT0_CLR 0x0f +#define LP5024_OUT1_CLR 0x10 +#define LP5024_OUT2_CLR 0x11 +#define LP5024_OUT3_CLR 0x12 +#define LP5024_OUT4_CLR 0x13 +#define LP5024_OUT5_CLR 0x14 +#define LP5024_OUT6_CLR 0x15 +#define LP5024_OUT7_CLR 0x16 +#define LP5024_OUT8_CLR 0x17 +#define LP5024_OUT9_CLR 0x18 +#define LP5024_OUT10_CLR 0x19 +#define LP5024_OUT11_CLR 0x1a +#define LP5024_OUT12_CLR 0x1b +#define LP5024_OUT13_CLR 0x1c +#define LP5024_OUT14_CLR 0x1d +#define LP5024_OUT15_CLR 0x1e +#define LP5024_OUT16_CLR 0x1f +#define LP5024_OUT17_CLR 0x20 +#define LP5024_OUT18_CLR 0x21 +#define LP5024_OUT19_CLR 0x22 +#define LP5024_OUT20_CLR 0x23 +#define LP5024_OUT21_CLR 0x24 +#define LP5024_OUT22_CLR 0x25 +#define LP5024_OUT23_CLR 0x26 +#define LP5024_RESET 0x27 + +/* LP5030 and LP5036 registers */ +#define LP5036_LED_CFG1 0x03 +#define LP5036_BNK_BRT 0x04 +#define LP5036_BNKA_CLR 0x05 +#define LP5036_BNKB_CLR 0x06 +#define LP5036_BNKC_CLR 0x07 +#define LP5036_LED0_BRT 0x08 +#define LP5036_LED1_BRT 0x09 +#define LP5036_LED2_BRT 0x0a +#define LP5036_LED3_BRT 0x0b +#define LP5036_LED4_BRT 0x0c +#define LP5036_LED5_BRT 0x0d +#define LP5036_LED6_BRT 0x0e +#define LP5036_LED7_BRT 0x0f +#define LP5036_LED8_BRT 0x10 +#define LP5036_LED9_BRT 0x11 +#define LP5036_LED10_BRT 0x12 +#define LP5036_LED11_BRT 0x13 + +#define LP5036_OUT0_CLR 0x14 +#define LP5036_OUT1_CLR 0x15 +#define LP5036_OUT2_CLR 0x16 +#define LP5036_OUT3_CLR 0x17 +#define LP5036_OUT4_CLR 0x18 +#define LP5036_OUT5_CLR 0x19 +#define LP5036_OUT6_CLR 0x1a +#define LP5036_OUT7_CLR 0x1b +#define LP5036_OUT8_CLR 0x1c +#define LP5036_OUT9_CLR 0x1d +#define LP5036_OUT10_CLR 0x1e +#define LP5036_OUT11_CLR 0x1f +#define LP5036_OUT12_CLR 0x20 +#define LP5036_OUT13_CLR 0x21 +#define LP5036_OUT14_CLR 0x22 +#define LP5036_OUT15_CLR 0x23 +#define LP5036_OUT16_CLR 0x24 +#define LP5036_OUT17_CLR 0x25 +#define LP5036_OUT18_CLR 0x26 +#define LP5036_OUT19_CLR 0x27 +#define LP5036_OUT20_CLR 0x28 +#define LP5036_OUT21_CLR 0x29 +#define LP5036_OUT22_CLR 0x2a +#define LP5036_OUT23_CLR 0x2b +#define LP5036_OUT24_CLR 0x2c +#define LP5036_OUT25_CLR 0x2d +#define LP5036_OUT26_CLR 0x2e +#define LP5036_OUT27_CLR 0x2f +#define LP5036_OUT28_CLR 0x30 +#define LP5036_OUT29_CLR 0x31 +#define LP5036_OUT30_CLR 0x32 +#define LP5036_OUT31_CLR 0x33 +#define LP5036_OUT32_CLR 0x34 +#define LP5036_OUT33_CLR 0x35 +#define LP5036_OUT34_CLR 0x36 +#define LP5036_OUT35_CLR 0x37 +#define LP5036_RESET 0x38 + +#define LP50XX_SW_RESET 0xff +#define LP50XX_CHIP_EN BIT(6) + +#define LP5009_MAX_LED_MODULES 2 +#define LP5012_MAX_LED_MODULES 4 +#define LP5018_MAX_LED_MODULES 6 +#define LP5024_MAX_LED_MODULES 8 +#define LP5030_MAX_LED_MODULES 10 +#define LP5036_MAX_LED_MODULES 12 + +struct lp50xx_led { + struct led_classdev led_dev; + struct led_classdev_mc mc_cdev; + struct lp50xx *priv; + unsigned long bank_modules; + char label[LED_MAX_NAME_SIZE]; + u8 ctrl_bank_enabled; + u32 available_leds; + int led_number; +}; + +/** + * struct lp50xx - + * @enable_gpio: Hardware enable gpio + * @regulator: LED supply regulator pointer + * @client: Pointer to the I2C client + * @regmap: Devices register map + * @dev: Pointer to the devices device struct + * @lock: Lock for reading/writing the device + * @chip_info: chip specific information (ie num_leds) + * @num_of_banked_leds: holds the number of banked LEDs + * @leds: Array of LED strings + */ +struct lp50xx { + struct gpio_desc *enable_gpio; + struct regulator *regulator; + struct i2c_client *client; + struct regmap *regmap; + struct device *dev; + struct mutex lock; + const struct lp50xx_chip_info *chip_info; + int num_of_banked_leds; + + /* This needs to be at the end of the struct */ + struct lp50xx_led leds[]; +}; + +static const struct reg_default lp5012_reg_defs[] = { + {LP50XX_DEV_CFG0, 0x0}, + {LP50XX_DEV_CFG1, 0x3c}, + {LP50XX_LED_CFG0, 0x0}, + {LP5012_BNK_BRT, 0xff}, + {LP5012_BNKA_CLR, 0x0f}, + {LP5012_BNKB_CLR, 0x0f}, + {LP5012_BNKC_CLR, 0x0f}, + {LP5012_LED0_BRT, 0x0f}, + {LP5012_LED1_BRT, 0xff}, + {LP5012_LED2_BRT, 0xff}, + {LP5012_LED3_BRT, 0xff}, + {LP5012_OUT0_CLR, 0x0f}, + {LP5012_OUT1_CLR, 0x00}, + {LP5012_OUT2_CLR, 0x00}, + {LP5012_OUT3_CLR, 0x00}, + {LP5012_OUT4_CLR, 0x00}, + {LP5012_OUT5_CLR, 0x00}, + {LP5012_OUT6_CLR, 0x00}, + {LP5012_OUT7_CLR, 0x00}, + {LP5012_OUT8_CLR, 0x00}, + {LP5012_OUT9_CLR, 0x00}, + {LP5012_OUT10_CLR, 0x00}, + {LP5012_OUT11_CLR, 0x00}, + {LP5012_RESET, 0x00} +}; + +static const struct reg_default lp5024_reg_defs[] = { + {LP50XX_DEV_CFG0, 0x0}, + {LP50XX_DEV_CFG1, 0x3c}, + {LP50XX_LED_CFG0, 0x0}, + {LP5024_BNK_BRT, 0xff}, + {LP5024_BNKA_CLR, 0x0f}, + {LP5024_BNKB_CLR, 0x0f}, + {LP5024_BNKC_CLR, 0x0f}, + {LP5024_LED0_BRT, 0x0f}, + {LP5024_LED1_BRT, 0xff}, + {LP5024_LED2_BRT, 0xff}, + {LP5024_LED3_BRT, 0xff}, + {LP5024_LED4_BRT, 0xff}, + {LP5024_LED5_BRT, 0xff}, + {LP5024_LED6_BRT, 0xff}, + {LP5024_LED7_BRT, 0xff}, + {LP5024_OUT0_CLR, 0x0f}, + {LP5024_OUT1_CLR, 0x00}, + {LP5024_OUT2_CLR, 0x00}, + {LP5024_OUT3_CLR, 0x00}, + {LP5024_OUT4_CLR, 0x00}, + {LP5024_OUT5_CLR, 0x00}, + {LP5024_OUT6_CLR, 0x00}, + {LP5024_OUT7_CLR, 0x00}, + {LP5024_OUT8_CLR, 0x00}, + {LP5024_OUT9_CLR, 0x00}, + {LP5024_OUT10_CLR, 0x00}, + {LP5024_OUT11_CLR, 0x00}, + {LP5024_OUT12_CLR, 0x00}, + {LP5024_OUT13_CLR, 0x00}, + {LP5024_OUT14_CLR, 0x00}, + {LP5024_OUT15_CLR, 0x00}, + {LP5024_OUT16_CLR, 0x00}, + {LP5024_OUT17_CLR, 0x00}, + {LP5024_OUT18_CLR, 0x00}, + {LP5024_OUT19_CLR, 0x00}, + {LP5024_OUT20_CLR, 0x00}, + {LP5024_OUT21_CLR, 0x00}, + {LP5024_OUT22_CLR, 0x00}, + {LP5024_OUT23_CLR, 0x00}, + {LP5024_RESET, 0x00} +}; + +static const struct reg_default lp5036_reg_defs[] = { + {LP50XX_DEV_CFG0, 0x0}, + {LP50XX_DEV_CFG1, 0x3c}, + {LP50XX_LED_CFG0, 0x0}, + {LP5036_LED_CFG1, 0x0}, + {LP5036_BNK_BRT, 0xff}, + {LP5036_BNKA_CLR, 0x0f}, + {LP5036_BNKB_CLR, 0x0f}, + {LP5036_BNKC_CLR, 0x0f}, + {LP5036_LED0_BRT, 0x0f}, + {LP5036_LED1_BRT, 0xff}, + {LP5036_LED2_BRT, 0xff}, + {LP5036_LED3_BRT, 0xff}, + {LP5036_LED4_BRT, 0xff}, + {LP5036_LED5_BRT, 0xff}, + {LP5036_LED6_BRT, 0xff}, + {LP5036_LED7_BRT, 0xff}, + {LP5036_OUT0_CLR, 0x0f}, + {LP5036_OUT1_CLR, 0x00}, + {LP5036_OUT2_CLR, 0x00}, + {LP5036_OUT3_CLR, 0x00}, + {LP5036_OUT4_CLR, 0x00}, + {LP5036_OUT5_CLR, 0x00}, + {LP5036_OUT6_CLR, 0x00}, + {LP5036_OUT7_CLR, 0x00}, + {LP5036_OUT8_CLR, 0x00}, + {LP5036_OUT9_CLR, 0x00}, + {LP5036_OUT10_CLR, 0x00}, + {LP5036_OUT11_CLR, 0x00}, + {LP5036_OUT12_CLR, 0x00}, + {LP5036_OUT13_CLR, 0x00}, + {LP5036_OUT14_CLR, 0x00}, + {LP5036_OUT15_CLR, 0x00}, + {LP5036_OUT16_CLR, 0x00}, + {LP5036_OUT17_CLR, 0x00}, + {LP5036_OUT18_CLR, 0x00}, + {LP5036_OUT19_CLR, 0x00}, + {LP5036_OUT20_CLR, 0x00}, + {LP5036_OUT21_CLR, 0x00}, + {LP5036_OUT22_CLR, 0x00}, + {LP5036_OUT23_CLR, 0x00}, + {LP5036_OUT24_CLR, 0x00}, + {LP5036_OUT25_CLR, 0x00}, + {LP5036_OUT26_CLR, 0x00}, + {LP5036_OUT27_CLR, 0x00}, + {LP5036_OUT28_CLR, 0x00}, + {LP5036_OUT29_CLR, 0x00}, + {LP5036_OUT30_CLR, 0x00}, + {LP5036_OUT31_CLR, 0x00}, + {LP5036_OUT32_CLR, 0x00}, + {LP5036_OUT33_CLR, 0x00}, + {LP5036_OUT34_CLR, 0x00}, + {LP5036_OUT35_CLR, 0x00}, + {LP5036_RESET, 0x00} +}; + +static const struct regmap_config lp5012_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = LP5012_RESET, + .reg_defaults = lp5012_reg_defs, + .num_reg_defaults = ARRAY_SIZE(lp5012_reg_defs), + .cache_type = REGCACHE_RBTREE, +}; + +static const struct regmap_config lp5024_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = LP5024_RESET, + .reg_defaults = lp5024_reg_defs, + .num_reg_defaults = ARRAY_SIZE(lp5024_reg_defs), + .cache_type = REGCACHE_RBTREE, +}; + +static const struct regmap_config lp5036_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = LP5036_RESET, + .reg_defaults = lp5036_reg_defs, + .num_reg_defaults = ARRAY_SIZE(lp5036_reg_defs), + .cache_type = REGCACHE_RBTREE, +}; + +enum lp50xx_model { + LP5009, + LP5012, + LP5018, + LP5024, + LP5030, + LP5036, +}; + +/* + * struct lp50xx_chip_info - + * @num_leds: number of LED outputs available on the device + * @led_brightness0_reg: first brightness register of the device + * @mix_out0_reg: first color mix register of the device + * @bank_brt_reg: bank brightness register + * @bank_mix_reg: color mix register + * @reset_reg: devices reset register + */ +struct lp50xx_chip_info { + struct regmap_config lp50xx_regmap_config; + u8 num_leds; + u8 led_brightness0_reg; + u8 mix_out0_reg; + u8 bank_brt_reg; + u8 bank_mix_reg; + u8 reset_reg; +}; + +static const struct lp50xx_chip_info lp50xx_chip_info_tbl[] = { + [LP5009] = { + .num_leds = LP5009_MAX_LED_MODULES, + .led_brightness0_reg = LP5012_LED0_BRT, + .mix_out0_reg = LP5012_OUT0_CLR, + .bank_brt_reg = LP5012_BNK_BRT, + .bank_mix_reg = LP5012_BNKA_CLR, + .reset_reg = LP5012_RESET, + .lp50xx_regmap_config = lp5012_regmap_config, + }, + [LP5012] = { + .num_leds = LP5012_MAX_LED_MODULES, + .led_brightness0_reg = LP5012_LED0_BRT, + .mix_out0_reg = LP5012_OUT0_CLR, + .bank_brt_reg = LP5012_BNK_BRT, + .bank_mix_reg = LP5012_BNKA_CLR, + .reset_reg = LP5012_RESET, + .lp50xx_regmap_config = lp5012_regmap_config, + }, + [LP5018] = { + .num_leds = LP5018_MAX_LED_MODULES, + .led_brightness0_reg = LP5024_LED0_BRT, + .mix_out0_reg = LP5024_OUT0_CLR, + .bank_brt_reg = LP5024_BNK_BRT, + .bank_mix_reg = LP5024_BNKA_CLR, + .reset_reg = LP5024_RESET, + .lp50xx_regmap_config = lp5024_regmap_config, + }, + [LP5024] = { + .num_leds = LP5024_MAX_LED_MODULES, + .led_brightness0_reg = LP5024_LED0_BRT, + .mix_out0_reg = LP5024_OUT0_CLR, + .bank_brt_reg = LP5024_BNK_BRT, + .bank_mix_reg = LP5024_BNKA_CLR, + .reset_reg = LP5024_RESET, + .lp50xx_regmap_config = lp5024_regmap_config, + }, + [LP5030] = { + .num_leds = LP5030_MAX_LED_MODULES, + .led_brightness0_reg = LP5036_LED0_BRT, + .mix_out0_reg = LP5036_OUT0_CLR, + .bank_brt_reg = LP5036_BNK_BRT, + .bank_mix_reg = LP5036_BNKA_CLR, + .reset_reg = LP5036_RESET, + .lp50xx_regmap_config = lp5036_regmap_config, + }, + [LP5036] = { + .num_leds = LP5036_MAX_LED_MODULES, + .led_brightness0_reg = LP5036_LED0_BRT, + .mix_out0_reg = LP5036_OUT0_CLR, + .bank_brt_reg = LP5036_BNK_BRT, + .bank_mix_reg = LP5036_BNKA_CLR, + .reset_reg = LP5036_RESET, + .lp50xx_regmap_config = lp5036_regmap_config, + }, +}; + +static struct lp50xx_led *mcled_cdev_to_led(struct led_classdev_mc *mcled_cdev) +{ + return container_of(mcled_cdev, struct lp50xx_led, mc_cdev); +} + +static int lp50xx_brightness_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct lp50xx_led *led = container_of(cdev, struct lp50xx_led, led_dev); + int ret = 0; + u8 reg_val; + + mutex_lock(&led->priv->lock); + + if (led->ctrl_bank_enabled) + reg_val = led->priv->chip_info->bank_brt_reg; + else + reg_val = led->priv->chip_info->led_brightness0_reg + + led->led_number; + + ret = regmap_write(led->priv->regmap, reg_val, brightness); + + mutex_unlock(&led->priv->lock); + + return ret; +} + +static enum led_brightness lp50xx_brightness_get(struct led_classdev *cdev) +{ + struct lp50xx_led *led = container_of(cdev, struct lp50xx_led, led_dev); + unsigned int brt_val; + u8 reg_val; + int ret; + + mutex_lock(&led->priv->lock); + + if (led->ctrl_bank_enabled) + reg_val = led->priv->chip_info->bank_brt_reg; + else + reg_val = led->priv->chip_info->led_brightness0_reg + led->led_number; + + ret = regmap_read(led->priv->regmap, reg_val, &brt_val); + + mutex_unlock(&led->priv->lock); + + return brt_val; +} + +static int lp50xx_get_color(struct led_classdev_mc *mcled_cdev, int color) +{ + struct lp50xx_led *led = mcled_cdev_to_led(mcled_cdev); + struct lp50xx *priv = led->priv; + u8 led_offset, reg_number, reg_color_off; + unsigned int value; + int ret; + + if (color == LED_COLOR_ID_RED) + reg_color_off = 0; + else if (color == LED_COLOR_ID_GREEN) + reg_color_off = 1; + else if (color == LED_COLOR_ID_BLUE) + reg_color_off = 2; + else + goto out; + + if (led->ctrl_bank_enabled) { + reg_number = priv->chip_info->bank_mix_reg + reg_color_off; + } else { + led_offset = (led->led_number * 3) + reg_color_off; + reg_number = priv->chip_info->mix_out0_reg + led_offset; + } + + ret = regmap_read(led->priv->regmap, reg_number, &value); + if (ret) { + dev_err(&priv->client->dev, "Cannot write LED value\n"); + goto out; + } +out: + return value; +} + +static int lp50xx_set_color(struct led_classdev_mc *mcled_cdev, + int color, int value) +{ + struct lp50xx_led *led = mcled_cdev_to_led(mcled_cdev); + struct lp50xx *priv = led->priv; + u8 led_offset, reg_number, reg_color_off; + int ret = -EINVAL; + + if (color == LED_COLOR_ID_RED) + reg_color_off = 0; + else if (color == LED_COLOR_ID_GREEN) + reg_color_off = 1; + else if (color == LED_COLOR_ID_BLUE) + reg_color_off = 2; + else + goto out; + + if (led->ctrl_bank_enabled) { + reg_number = priv->chip_info->bank_mix_reg + reg_color_off; + } else { + led_offset = (led->led_number * 3) + reg_color_off; + reg_number = priv->chip_info->mix_out0_reg + led_offset; + } + + ret = regmap_write(priv->regmap, reg_number, value); + if (ret) { + dev_err(&priv->client->dev, "Cannot write LED value\n"); + goto out; + } +out: + return ret; +} + +static struct led_multicolor_ops lp50xx_mc_ops = { + .set_color_brightness = lp50xx_set_color, + .get_color_brightness = lp50xx_get_color, +}; + +static int lp50xx_set_banks(struct lp50xx *priv, u32 led_strings[]) +{ + u8 led_ctrl_enable = 0; + u8 led1_ctrl_enable = 0; + u8 ctrl_ext = 0; + int ret; + int j; + + for (j = 0; j <= priv->chip_info->num_leds - 1; j++) { + if (led_strings[j] > (LP5024_MAX_LED_MODULES - 1)) { + ctrl_ext = led_strings[j] - LP5024_MAX_LED_MODULES; + led1_ctrl_enable |= (1 << ctrl_ext); + } else { + led_ctrl_enable |= (1 << led_strings[j]); + } + } + + ret = regmap_write(priv->regmap, LP50XX_LED_CFG0, led_ctrl_enable); + + if (led1_ctrl_enable) + ret = regmap_write(priv->regmap, LP5036_LED_CFG1, + led1_ctrl_enable); + + return ret; +} + +static int lp50xx_reset(struct lp50xx *priv) +{ + if (priv->enable_gpio) + return gpiod_direction_output(priv->enable_gpio, 1); + else + return regmap_write(priv->regmap, priv->chip_info->reset_reg, + LP50XX_SW_RESET); +} + +static int lp50xx_enable_disable(struct lp50xx *priv, u8 enable_disable) +{ + return regmap_write(priv->regmap, LP50XX_DEV_CFG0, enable_disable); +} + +static int lp50xx_probe_dt(struct lp50xx *priv) +{ + u32 led_strings[LP5036_MAX_LED_MODULES]; + struct fwnode_handle *child = NULL; + struct fwnode_handle *led_node = NULL; + struct led_init_data init_data; + struct lp50xx_led *led; + int num_colors; + u32 color_id; + int led_number; + size_t i = 0; + int ret; + + priv->enable_gpio = devm_gpiod_get_optional(&priv->client->dev, + "enable", GPIOD_OUT_LOW); + if (IS_ERR(priv->enable_gpio)) { + ret = PTR_ERR(priv->enable_gpio); + dev_err(&priv->client->dev, "Failed to get enable gpio: %d\n", + ret); + return ret; + } + + priv->regulator = devm_regulator_get(&priv->client->dev, "vled"); + if (IS_ERR(priv->regulator)) + priv->regulator = NULL; + + device_for_each_child_node(&priv->client->dev, child) { + led = &priv->leds[i]; + if (fwnode_property_present(child, "ti,led-bank")) { + ret = fwnode_property_read_u32_array(child, + "ti,led-bank", + NULL, 0); + ret = fwnode_property_read_u32_array(child, + "ti,led-bank", + led_strings, + ret); + + priv->num_of_banked_leds = ARRAY_SIZE(led_strings); + + ret = lp50xx_set_banks(priv, led_strings); + if (ret) { + dev_err(&priv->client->dev, + "Cannot setup banked LEDs\n"); + fwnode_handle_put(child); + goto child_out; + } + led->ctrl_bank_enabled = 1; + + } else { + ret = fwnode_property_read_u32(child, "reg", + &led_number); + + led->led_number = led_number; + } + if (ret) { + dev_err(&priv->client->dev, + "led sourcing property missing\n"); + fwnode_handle_put(child); + goto child_out; + } + + if (led_number > priv->chip_info->num_leds) { + dev_err(&priv->client->dev, + "led-sources property is invalid\n"); + ret = -EINVAL; + fwnode_handle_put(child); + goto child_out; + } + + init_data.fwnode = child; + init_data.devicename = priv->client->name; + init_data.default_label = ":"; + + fwnode_property_read_string(child, "linux,default-trigger", + &led->led_dev.default_trigger); + num_colors = 0; + + fwnode_for_each_child_node(child, led_node) { + ret = fwnode_property_read_u32(led_node, "color", + &color_id); + if (ret) + dev_err(&priv->client->dev, + "Cannot read color\n"); + + set_bit(color_id, &led->mc_cdev.available_colors); + num_colors++; + + } + + led->priv = priv; + led->mc_cdev.ops = &lp50xx_mc_ops; + led->mc_cdev.num_leds = num_colors; + led->mc_cdev.led_cdev = &led->led_dev; + led->led_dev.brightness_set_blocking = lp50xx_brightness_set; + led->led_dev.brightness_get = lp50xx_brightness_get; + ret = led_classdev_multicolor_register_ext(&priv->client->dev, + &led->mc_cdev, + &init_data); + if (ret) { + dev_err(&priv->client->dev, "led register err: %d\n", + ret); + fwnode_handle_put(child); + goto child_out; + } + i++; + } + +child_out: + return ret; +} + +static int lp50xx_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct lp50xx *led; + int count; + int ret; + + count = device_get_child_node_count(&client->dev); + if (!count) { + dev_err(&client->dev, "LEDs are not defined in device tree!"); + return -ENODEV; + } + + led = devm_kzalloc(&client->dev, struct_size(led, leds, count), + GFP_KERNEL); + if (!led) + return -ENOMEM; + + mutex_init(&led->lock); + led->client = client; + led->dev = &client->dev; + led->chip_info = &lp50xx_chip_info_tbl[id->driver_data]; + i2c_set_clientdata(client, led); + + led->regmap = devm_regmap_init_i2c(client, + &led->chip_info->lp50xx_regmap_config); + if (IS_ERR(led->regmap)) { + ret = PTR_ERR(led->regmap); + dev_err(&client->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + ret = lp50xx_reset(led); + if (ret) + return ret; + + ret = lp50xx_probe_dt(led); + if (ret) + return ret; + + return lp50xx_enable_disable(led, LP50XX_CHIP_EN); +} + +static int lp50xx_remove(struct i2c_client *client) +{ + struct lp50xx *led = i2c_get_clientdata(client); + int ret; + + ret = lp50xx_enable_disable(led, LP50XX_CHIP_EN); + if (ret) { + dev_err(&led->client->dev, "Failed to disable regulator\n"); + return ret; + } + + if (led->enable_gpio) + gpiod_direction_output(led->enable_gpio, 0); + + if (led->regulator) { + ret = regulator_disable(led->regulator); + if (ret) + dev_err(&led->client->dev, + "Failed to disable regulator\n"); + } + + mutex_destroy(&led->lock); + + return 0; +} + +static const struct i2c_device_id lp50xx_id[] = { + { "lp5009", LP5009 }, + { "lp5012", LP5012 }, + { "lp5018", LP5018 }, + { "lp5024", LP5024 }, + { "lp5030", LP5030 }, + { "lp5036", LP5036 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, lp50xx_id); + +static const struct of_device_id of_lp50xx_leds_match[] = { + { .compatible = "ti,lp5009", .data = (void *)LP5009 }, + { .compatible = "ti,lp5012", .data = (void *)LP5012 }, + { .compatible = "ti,lp5018", .data = (void *)LP5018 }, + { .compatible = "ti,lp5024", .data = (void *)LP5024 }, + { .compatible = "ti,lp5030", .data = (void *)LP5030 }, + { .compatible = "ti,lp5036", .data = (void *)LP5036 }, + {}, +}; +MODULE_DEVICE_TABLE(of, of_lp50xx_leds_match); + +static struct i2c_driver lp50xx_driver = { + .driver = { + .name = "lp50xx", + .of_match_table = of_lp50xx_leds_match, + }, + .probe = lp50xx_probe, + .remove = lp50xx_remove, + .id_table = lp50xx_id, +}; +module_i2c_driver(lp50xx_driver); + +MODULE_DESCRIPTION("Texas Instruments LP50XX LED driver"); +MODULE_AUTHOR("Dan Murphy "); +MODULE_LICENSE("GPL v2");