From patchwork Wed Nov 25 10:51:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gene Chen X-Patchwork-Id: 11931195 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24625C64E75 for ; Wed, 25 Nov 2020 10:51:49 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A02D4206E5 for ; 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Wed, 25 Nov 2020 02:51:27 -0800 (PST) Received: from localhost.localdomain ([2402:7500:48b:4d7:7339:ae2d:114e:3859]) by smtp.gmail.com with ESMTPSA id j10sm2049520pgc.85.2020.11.25.02.51.24 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2020 02:51:27 -0800 (PST) From: Gene Chen To: jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, matthias.bgg@gmail.com Subject: [PATCH v8 1/6] leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH Date: Wed, 25 Nov 2020 18:51:10 +0800 Message-Id: <1606301475-7030-2-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> References: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_055129_706284_F2CB10EF X-CRM114-Status: GOOD ( 13.41 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, dmurphy@ti.com, linux-leds@vger.kernel.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Gene Chen Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH Signed-off-by: Gene Chen --- include/linux/led-class-flash.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h index 21a3358..5f36eae 100644 --- a/include/linux/led-class-flash.h +++ b/include/linux/led-class-flash.h @@ -85,6 +85,7 @@ static inline struct led_classdev_flash *lcdev_to_flcdev( return container_of(lcdev, struct led_classdev_flash, led_cdev); } +#if IS_ENABLED(CONFIG_LEDS_CLASS_FLASH) /** * led_classdev_flash_register_ext - register a new object of LED class with * init data and with support for flash LEDs @@ -127,6 +128,41 @@ static inline int devm_led_classdev_flash_register(struct device *parent, void devm_led_classdev_flash_unregister(struct device *parent, struct led_classdev_flash *fled_cdev); +#else + +static inline int led_classdev_flash_register_ext(struct device *parent, + struct led_classdev_flash *fled_cdev, + struct led_init_data *init_data) +{ + return 0; +} + +static inline int led_classdev_flash_register(struct device *parent, + struct led_classdev_flash *fled_cdev) +{ + return led_classdev_flash_register_ext(parent, fled_cdev, NULL); +} + +static inline void led_classdev_flash_unregister(struct led_classdev_flash *fled_cdev) {}; +static inline int devm_led_classdev_flash_register_ext(struct device *parent, + struct led_classdev_flash *fled_cdev, + struct led_init_data *init_data) +{ + return 0; +} + +static inline int devm_led_classdev_flash_register(struct device *parent, + struct led_classdev_flash *fled_cdev) +{ + return devm_led_classdev_flash_register_ext(parent, fled_cdev, NULL); +} + +static inline void devm_led_classdev_flash_unregister(struct device *parent, + struct led_classdev_flash *fled_cdev) +{}; + +#endif /* IS_ENABLED(CONFIG_LEDS_CLASS_FLASH) */ + /** * led_set_flash_strobe - setup flash strobe * @fled_cdev: the flash LED to set strobe on From patchwork Wed Nov 25 10:51:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gene Chen X-Patchwork-Id: 11931197 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DB1FC56202 for ; 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Wed, 25 Nov 2020 02:51:31 -0800 (PST) Received: from localhost.localdomain ([2402:7500:48b:4d7:7339:ae2d:114e:3859]) by smtp.gmail.com with ESMTPSA id j10sm2049520pgc.85.2020.11.25.02.51.28 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2020 02:51:31 -0800 (PST) From: Gene Chen To: jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, matthias.bgg@gmail.com Subject: [PATCH v8 2/6] leds: flash: Fix multicolor registration no-ops by return 0 Date: Wed, 25 Nov 2020 18:51:11 +0800 Message-Id: <1606301475-7030-3-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> References: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_055133_915059_C2C90BE0 X-CRM114-Status: GOOD ( 13.26 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, dmurphy@ti.com, linux-leds@vger.kernel.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Gene Chen Fix multicolor registration no-ops by return 0 Signed-off-by: Gene Chen --- include/linux/led-class-multicolor.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/led-class-multicolor.h b/include/linux/led-class-multicolor.h index 5116f9a..dbf3832 100644 --- a/include/linux/led-class-multicolor.h +++ b/include/linux/led-class-multicolor.h @@ -83,7 +83,7 @@ static inline int led_classdev_multicolor_register_ext(struct device *parent, struct led_classdev_mc *mcled_cdev, struct led_init_data *init_data) { - return -EINVAL; + return 0; } static inline int led_classdev_multicolor_register(struct device *parent, @@ -96,14 +96,14 @@ static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mc static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev, enum led_brightness brightness) { - return -EINVAL; + return 0; } static inline int devm_led_classdev_multicolor_register_ext(struct device *parent, struct led_classdev_mc *mcled_cdev, struct led_init_data *init_data) { - return -EINVAL; + return 0; } static inline int devm_led_classdev_multicolor_register(struct device *parent, From patchwork Wed Nov 25 10:51:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gene Chen X-Patchwork-Id: 11931199 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23FBFC64E7C for ; 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Wed, 25 Nov 2020 02:51:35 -0800 (PST) Received: from localhost.localdomain ([2402:7500:48b:4d7:7339:ae2d:114e:3859]) by smtp.gmail.com with ESMTPSA id j10sm2049520pgc.85.2020.11.25.02.51.32 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2020 02:51:35 -0800 (PST) From: Gene Chen To: jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, matthias.bgg@gmail.com Subject: [PATCH v8 3/6] dt-bindings: leds: Add LED_FUNCTION_MOONLIGHT definitions Date: Wed, 25 Nov 2020 18:51:12 +0800 Message-Id: <1606301475-7030-4-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> References: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_055137_155455_CF12F381 X-CRM114-Status: GOOD ( 12.56 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, dmurphy@ti.com, linux-leds@vger.kernel.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Gene Chen Add LED_FUNCTION_MOONLIGHT definitions Signed-off-by: Gene Chen Acked-by: Jacek Anaszewski --- include/dt-bindings/leds/common.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h index 52b619d..843e65d 100644 --- a/include/dt-bindings/leds/common.h +++ b/include/dt-bindings/leds/common.h @@ -78,6 +78,7 @@ #define LED_FUNCTION_INDICATOR "indicator" #define LED_FUNCTION_LAN "lan" #define LED_FUNCTION_MAIL "mail" +#define LED_FUNCTION_MOONLIGHT "moonlight" #define LED_FUNCTION_MTD "mtd" #define LED_FUNCTION_PANIC "panic" #define LED_FUNCTION_PROGRAMMING "programming" From patchwork Wed Nov 25 10:51:13 2020 Content-Type: text/plain; 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Wed, 25 Nov 2020 02:51:39 -0800 (PST) Received: from localhost.localdomain ([2402:7500:48b:4d7:7339:ae2d:114e:3859]) by smtp.gmail.com with ESMTPSA id j10sm2049520pgc.85.2020.11.25.02.51.35 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2020 02:51:39 -0800 (PST) From: Gene Chen To: jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, matthias.bgg@gmail.com Subject: [PATCH v8 4/6] dt-bindings: leds: common: Increase LED_COLOR_ID_* maximum size Date: Wed, 25 Nov 2020 18:51:13 +0800 Message-Id: <1606301475-7030-5-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> References: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_055141_609782_7371FD4B X-CRM114-Status: GOOD ( 13.25 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, dmurphy@ti.com, linux-leds@vger.kernel.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Gene Chen Increase LED_COLOR_ID maximum size for LED_COLOR_ID_RGB Signed-off-by: Gene Chen --- Documentation/devicetree/bindings/leds/common.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml index a2a541b..0c9f912 100644 --- a/Documentation/devicetree/bindings/leds/common.yaml +++ b/Documentation/devicetree/bindings/leds/common.yaml @@ -43,7 +43,7 @@ properties: LED_COLOR_ID available, add a new one. $ref: /schemas/types.yaml#definitions/uint32 minimum: 0 - maximum: 8 + maximum: 9 function-enumerator: description: From patchwork Wed Nov 25 10:51:14 2020 Content-Type: text/plain; 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Wed, 25 Nov 2020 02:51:43 -0800 (PST) Received: from localhost.localdomain ([2402:7500:48b:4d7:7339:ae2d:114e:3859]) by smtp.gmail.com with ESMTPSA id j10sm2049520pgc.85.2020.11.25.02.51.39 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2020 02:51:43 -0800 (PST) From: Gene Chen To: jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, matthias.bgg@gmail.com Subject: [PATCH v8 5/6] dt-bindings: leds: Add bindings for MT6360 LED Date: Wed, 25 Nov 2020 18:51:14 +0800 Message-Id: <1606301475-7030-6-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> References: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_055145_451457_222D2422 X-CRM114-Status: GOOD ( 14.92 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, dmurphy@ti.com, linux-leds@vger.kernel.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Gene Chen Add bindings document for LED support on MT6360 PMIC Signed-off-by: Gene Chen --- .../devicetree/bindings/leds/leds-mt6360.yaml | 164 +++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-mt6360.yaml diff --git a/Documentation/devicetree/bindings/leds/leds-mt6360.yaml b/Documentation/devicetree/bindings/leds/leds-mt6360.yaml new file mode 100644 index 0000000..b2ffbc6 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-mt6360.yaml @@ -0,0 +1,164 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/leds-mt6360.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LED driver for MT6360 PMIC from MediaTek Integrated. + +maintainers: + - Gene Chen + +description: | + This module is part of the MT6360 MFD device. + see Documentation/devicetree/bindings/mfd/mt6360.yaml + Add MT6360 LED driver include 2-channel Flash LED with torch/strobe mode, + and 4-channel RGB LED support Register/Flash/Breath Mode + +properties: + compatible: + const: mediatek,mt6360-led + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^led@[0-6]$": + type: object + $ref: common.yaml# + description: + Properties for a single LED. + + properties: + reg: + description: Index of the LED. + enum: + - 0 # LED output INDICATOR1_RED + - 1 # LED output INDICATOR1_GREEN + - 2 # LED output INDICATOR1_BLUE + - 3 # LED output INDICATOR2_ML + - 4 # LED output FLED1 + - 5 # LED output FLED2 + - 6 # LED output MULTICOLOR + +unevaluatedProperties: false + +required: + - compatible + - "#address-cells" + - "#size-cells" + +additionalProperties: false + +examples: + - | + #include + led-controller { + compatible = "mediatek,mt6360-led"; + #address-cells = <1>; + #size-cells = <0>; + + led@3 { + reg = <3>; + function = LED_FUNCTION_MOONLIGHT; + color = ; + led-max-microamp = <150000>; + }; + led@4 { + reg = <4>; + function = LED_FUNCTION_FLASH; + color = ; + function-enumerator = <1>; + led-max-microamp = <200000>; + flash-max-microamp = <500000>; + flash-max-timeout-us = <1024000>; + }; + led@5 { + reg = <5>; + function = LED_FUNCTION_FLASH; + color = ; + function-enumerator = <2>; + led-max-microamp = <200000>; + flash-max-microamp = <500000>; + flash-max-timeout-us = <1024000>; + }; + led@6 { + reg = <6>; + function = LED_FUNCTION_INDICATOR; + color = ; + led-max-microamp = <24000>; + #address-cells = <1>; + #size-cells = <0>; + + led@0 { + reg = <0>; + function = LED_FUNCTION_INDICATOR; + color = ; + }; + led@1 { + reg = <1>; + function = LED_FUNCTION_INDICATOR; + color = ; + }; + led@2 { + reg = <2>; + function = LED_FUNCTION_INDICATOR; + color = ; + }; + }; + }; + + - | + + led-controller { + compatible = "mediatek,mt6360-led"; + #address-cells = <1>; + #size-cells = <0>; + + led@0 { + reg = <0>; + function = LED_FUNCTION_INDICATOR; + color = ; + led-max-microamp = <24000>; + }; + led@1 { + reg = <1>; + function = LED_FUNCTION_INDICATOR; + color = ; + led-max-microamp = <24000>; + }; + led@2 { + reg = <2>; + function = LED_FUNCTION_INDICATOR; + color = ; + led-max-microamp = <24000>; + }; + led@3 { + reg = <3>; + function = LED_FUNCTION_MOONLIGHT; + color = ; + led-max-microamp = <150000>; + }; + led@4 { + reg = <4>; + function = LED_FUNCTION_FLASH; + color = ; + function-enumerator = <1>; + led-max-microamp = <200000>; + flash-max-microamp = <500000>; + flash-max-timeout-us = <1024000>; + }; + led@5 { + reg = <5>; + function = LED_FUNCTION_FLASH; + color = ; + function-enumerator = <2>; + led-max-microamp = <200000>; + flash-max-microamp = <500000>; + flash-max-timeout-us = <1024000>; + }; + }; +... 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Wed, 25 Nov 2020 02:51:48 -0800 (PST) Received: from localhost.localdomain ([2402:7500:48b:4d7:7339:ae2d:114e:3859]) by smtp.gmail.com with ESMTPSA id j10sm2049520pgc.85.2020.11.25.02.51.43 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 25 Nov 2020 02:51:47 -0800 (PST) From: Gene Chen To: jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, matthias.bgg@gmail.com Subject: [PATCH v8 6/6] leds: mt6360: Add LED driver for MT6360 Date: Wed, 25 Nov 2020 18:51:15 +0800 Message-Id: <1606301475-7030-7-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> References: <1606301475-7030-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201125_055150_576322_B731F615 X-CRM114-Status: GOOD ( 27.32 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, dmurphy@ti.com, linux-leds@vger.kernel.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Gene Chen Add MT6360 LED driver include 2-channel Flash LED with torch/strobe mode, 3-channel RGB LED support Register/Flash/Breath Mode, and 1-channel for moonlight LED. Signed-off-by: Gene Chen Acked-by: Jacek Anaszewski --- drivers/leds/Kconfig | 13 + drivers/leds/Makefile | 1 + drivers/leds/leds-mt6360.c | 811 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 825 insertions(+) create mode 100644 drivers/leds/leds-mt6360.c diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 1c181df..4f533bc 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -271,6 +271,19 @@ config LEDS_MT6323 This option enables support for on-chip LED drivers found on Mediatek MT6323 PMIC. +config LEDS_MT6360 + tristate "LED Support for Mediatek MT6360 PMIC" + depends on LEDS_CLASS && OF + depends on LEDS_CLASS_FLASH || !LEDS_CLASS_FLASH + depends on LEDS_CLASS_MULTICOLOR || !LEDS_CLASS_MULTICOLOR + depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS + depends on MFD_MT6360 + help + This option enables support for dual Flash LED drivers found on + Mediatek MT6360 PMIC. + Independent current sources supply for each flash LED support torch + and strobe mode. + config LEDS_S3C24XX tristate "LED Support for Samsung S3C24XX GPIO LEDs" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index c2c7d7a..5596427 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -66,6 +66,7 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o obj-$(CONFIG_LEDS_MLXCPLD) += leds-mlxcpld.o obj-$(CONFIG_LEDS_MLXREG) += leds-mlxreg.o obj-$(CONFIG_LEDS_MT6323) += leds-mt6323.o +obj-$(CONFIG_LEDS_MT6360) += leds-mt6360.o obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o obj-$(CONFIG_LEDS_NIC78BX) += leds-nic78bx.o diff --git a/drivers/leds/leds-mt6360.c b/drivers/leds/leds-mt6360.c new file mode 100644 index 0000000..94836bb --- /dev/null +++ b/drivers/leds/leds-mt6360.c @@ -0,0 +1,811 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum { + MT6360_LED_ISNK1 = 0, + MT6360_LED_ISNK2, + MT6360_LED_ISNK3, + MT6360_LED_ISNKML, + MT6360_LED_FLASH1, + MT6360_LED_FLASH2, + MT6360_LED_MULTICOLOR, + MT6360_MAX_LEDS = MT6360_LED_MULTICOLOR +}; + +#define MT6360_REG_RGBEN 0x380 +#define MT6360_REG_ISNK(_led_no) (0x381 + (_led_no)) +#define MT6360_ISNK_ENMASK(_led_no) BIT(7 - (_led_no)) +#define MT6360_ISNK_MASK GENMASK(4, 0) +#define MT6360_CHRINDSEL_MASK BIT(3) + +#define MULTICOLOR_NUM_CHANNELS 3 + +#define MT6360_REG_FLEDEN 0x37E +#define MT6360_REG_STRBTO 0x373 +#define MT6360_REG_FLEDBASE(_id) (0x372 + 4 * (_id - MT6360_LED_FLASH1)) +#define MT6360_REG_FLEDISTRB(_id) (MT6360_REG_FLEDBASE(_id) + 2) +#define MT6360_REG_FLEDITOR(_id) (MT6360_REG_FLEDBASE(_id) + 3) +#define MT6360_REG_CHGSTAT2 0x3E1 +#define MT6360_REG_FLEDSTAT1 0x3E9 +#define MT6360_ITORCH_MASK GENMASK(4, 0) +#define MT6360_ISTROBE_MASK GENMASK(6, 0) +#define MT6360_STRBTO_MASK GENMASK(6, 0) +#define MT6360_TORCHEN_MASK BIT(3) +#define MT6360_STROBEN_MASK BIT(2) +#define MT6360_FLCSEN_MASK(_id) BIT(MT6360_LED_FLASH2 - _id) +#define MT6360_FLEDCHGVINOVP_MASK BIT(3) +#define MT6360_FLED1STRBTO_MASK BIT(11) +#define MT6360_FLED2STRBTO_MASK BIT(10) +#define MT6360_FLED1STRB_MASK BIT(9) +#define MT6360_FLED2STRB_MASK BIT(8) +#define MT6360_FLED1SHORT_MASK BIT(7) +#define MT6360_FLED2SHORT_MASK BIT(6) +#define MT6360_FLEDLVF_MASK BIT(3) + +#define MT6360_ISNKRGB_STEPUA 2000 +#define MT6360_ISNKRGB_MAXUA 24000 +#define MT6360_ISNKML_STEPUA 5000 +#define MT6360_ISNKML_MAXUA 150000 + +#define MT6360_ITORCH_MINUA 25000 +#define MT6360_ITORCH_STEPUA 12500 +#define MT6360_ITORCH_MAXUA 400000 +#define MT6360_ISTRB_MINUA 50000 +#define MT6360_ISTRB_STEPUA 12500 +#define MT6360_ISTRB_MAXUA 1500000 +#define MT6360_STRBTO_MINUS 64000 +#define MT6360_STRBTO_STEPUS 32000 +#define MT6360_STRBTO_MAXUS 2432000 + +#define STATE_OFF 0 +#define STATE_KEEP 1 +#define STATE_ON 2 + +struct mt6360_led { + union { + struct led_classdev isnk; + struct led_classdev_mc mc; + struct led_classdev_flash flash; + }; + struct v4l2_flash *v4l2_flash; + struct mt6360_priv *priv; + u32 led_no; + u32 default_state; +}; + +struct mt6360_priv { + struct device *dev; + struct regmap *regmap; + struct mutex lock; + unsigned int fled_strobe_used; + unsigned int fled_torch_used; + unsigned int leds_active; + unsigned int leds_count; + struct mt6360_led leds[]; +}; + +static int mt6360_mc_brightness_set(struct led_classdev *lcdev, enum led_brightness level) +{ + struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev); + struct mt6360_led *led = container_of(mccdev, struct mt6360_led, mc); + struct mt6360_priv *priv = led->priv; + u32 real_bright, enable_mask = 0, enable = 0; + int i, ret; + + mutex_lock(&priv->lock); + + led_mc_calc_color_components(mccdev, level); + + for (i = 0; i < mccdev->num_colors; i++) { + struct mc_subled *subled = mccdev->subled_info + i; + + real_bright = min(lcdev->max_brightness, subled->brightness); + ret = regmap_update_bits(priv->regmap, MT6360_REG_ISNK(i), MT6360_ISNK_MASK, + real_bright); + if (ret) + goto out; + + enable_mask |= MT6360_ISNK_ENMASK(subled->channel); + if (real_bright) + enable |= MT6360_ISNK_ENMASK(subled->channel); + } + + ret = regmap_update_bits(priv->regmap, MT6360_REG_RGBEN, enable_mask, enable); + +out: + mutex_unlock(&priv->lock); + return ret; +} + +static int mt6360_isnk_brightness_set(struct led_classdev *lcdev, enum led_brightness level) +{ + struct mt6360_led *led = container_of(lcdev, struct mt6360_led, isnk); + struct mt6360_priv *priv = led->priv; + u32 enable_mask = MT6360_ISNK_ENMASK(led->led_no); + u32 val = level ? MT6360_ISNK_ENMASK(led->led_no) : 0; + int ret; + + mutex_lock(&priv->lock); + + ret = regmap_update_bits(priv->regmap, MT6360_REG_ISNK(led->led_no), MT6360_ISNK_MASK, + level); + if (ret) + goto out; + + ret = regmap_update_bits(priv->regmap, MT6360_REG_RGBEN, enable_mask, val); + +out: + mutex_unlock(&priv->lock); + return ret; +} + +static int mt6360_torch_brightness_set(struct led_classdev *lcdev, enum led_brightness level) +{ + struct mt6360_led *led = container_of(lcdev, struct mt6360_led, flash.led_cdev); + struct mt6360_priv *priv = led->priv; + u32 enable_mask = MT6360_TORCHEN_MASK | MT6360_FLCSEN_MASK(led->led_no); + u32 val = level ? MT6360_FLCSEN_MASK(led->led_no) : 0; + u32 prev = priv->fled_torch_used, curr; + int ret; + + mutex_lock(&priv->lock); + + /* Only one set of flash control logic, use the flag to avoid strobe is currently used */ + if (priv->fled_strobe_used) { + dev_warn(lcdev->dev, "Please disable strobe first [%d]\n", priv->fled_strobe_used); + ret = -EBUSY; + goto unlock; + } + + if (level) + curr = prev | BIT(led->led_no); + else + curr = prev & ~BIT(led->led_no); + + if (curr) + val |= MT6360_TORCHEN_MASK; + + if (level) { + ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDITOR(led->led_no), + MT6360_ITORCH_MASK, level - 1); + if (ret) + goto unlock; + } + + ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDEN, enable_mask, val); + if (ret) + goto unlock; + + priv->fled_torch_used = curr; + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static int mt6360_flash_brightness_set(struct led_classdev_flash *fl_cdev, u32 brightness) +{ + /* + * Due to the current spike when turning on flash, let brightness to be kept by framework. + * This empty function is used to prevent led_classdev_flash register ops check failure. + */ + return 0; +} + +static int _mt6360_flash_brightness_set(struct led_classdev_flash *fl_cdev, u32 brightness) +{ + struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash); + struct mt6360_priv *priv = led->priv; + struct led_flash_setting *s = &fl_cdev->brightness; + u32 val = (brightness - s->min) / s->step; + + return regmap_update_bits(priv->regmap, MT6360_REG_FLEDISTRB(led->led_no), + MT6360_ISTROBE_MASK, val); +} + +static int mt6360_strobe_set(struct led_classdev_flash *fl_cdev, bool state) +{ + struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash); + struct mt6360_priv *priv = led->priv; + struct led_classdev *lcdev = &fl_cdev->led_cdev; + struct led_flash_setting *s = &fl_cdev->brightness; + u32 enable_mask = MT6360_STROBEN_MASK | MT6360_FLCSEN_MASK(led->led_no); + u32 val = state ? MT6360_FLCSEN_MASK(led->led_no) : 0; + u32 prev = priv->fled_strobe_used, curr; + int ret; + + mutex_lock(&priv->lock); + + /* Only one set of flash control logic, use the flag to avoid torch is currently used */ + if (priv->fled_torch_used) { + dev_warn(lcdev->dev, "Please disable torch first [0x%x]\n", priv->fled_torch_used); + ret = -EBUSY; + goto unlock; + } + + if (state) + curr = prev | BIT(led->led_no); + else + curr = prev & ~BIT(led->led_no); + + if (curr) + val |= MT6360_STROBEN_MASK; + + ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDEN, enable_mask, val); + if (ret) { + dev_err(lcdev->dev, "[%d] control current source %d fail\n", led->led_no, state); + goto unlock; + } + + /* + * If the flash need to be on, config the flash current ramping up to the setting value + * Else, always recover back to the minimum one + */ + ret = _mt6360_flash_brightness_set(fl_cdev, state ? s->val : s->min); + if (ret) + goto unlock; + + /* For the flash turn on/off, HW rampping up/down time is 5ms/500us, respectively */ + if (!prev && curr) + usleep_range(5000, 6000); + else if (prev && !curr) + udelay(500); + + priv->fled_strobe_used = curr; + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static int mt6360_strobe_get(struct led_classdev_flash *fl_cdev, bool *state) +{ + struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash); + struct mt6360_priv *priv = led->priv; + + mutex_lock(&priv->lock); + *state = !!(priv->fled_strobe_used & BIT(led->led_no)); + mutex_unlock(&priv->lock); + + return 0; +} + +static int mt6360_timeout_set(struct led_classdev_flash *fl_cdev, u32 timeout) +{ + struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash); + struct mt6360_priv *priv = led->priv; + struct led_flash_setting *s = &fl_cdev->timeout; + u32 val = (timeout - s->min) / s->step; + int ret; + + mutex_lock(&priv->lock); + ret = regmap_update_bits(priv->regmap, MT6360_REG_STRBTO, MT6360_STRBTO_MASK, val); + mutex_unlock(&priv->lock); + + return ret; +} + +static int mt6360_fault_get(struct led_classdev_flash *fl_cdev, u32 *fault) +{ + struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash); + struct mt6360_priv *priv = led->priv; + u16 fled_stat; + unsigned int chg_stat, strobe_timeout_mask, fled_short_mask; + u32 rfault = 0; + int ret; + + mutex_lock(&priv->lock); + ret = regmap_read(priv->regmap, MT6360_REG_CHGSTAT2, &chg_stat); + if (ret) + goto unlock; + + ret = regmap_raw_read(priv->regmap, MT6360_REG_FLEDSTAT1, &fled_stat, sizeof(fled_stat)); + if (ret) + goto unlock; + + if (led->led_no == MT6360_LED_FLASH1) { + strobe_timeout_mask = MT6360_FLED1STRBTO_MASK; + fled_short_mask = MT6360_FLED1SHORT_MASK; + } else { + strobe_timeout_mask = MT6360_FLED2STRBTO_MASK; + fled_short_mask = MT6360_FLED2SHORT_MASK; + } + + if (chg_stat & MT6360_FLEDCHGVINOVP_MASK) + rfault |= LED_FAULT_INPUT_VOLTAGE; + + if (fled_stat & strobe_timeout_mask) + rfault |= LED_FAULT_TIMEOUT; + + if (fled_stat & fled_short_mask) + rfault |= LED_FAULT_SHORT_CIRCUIT; + + if (fled_stat & MT6360_FLEDLVF_MASK) + rfault |= LED_FAULT_UNDER_VOLTAGE; + + *fault = rfault; +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static const struct led_flash_ops mt6360_flash_ops = { + .flash_brightness_set = mt6360_flash_brightness_set, + .strobe_set = mt6360_strobe_set, + .strobe_get = mt6360_strobe_get, + .timeout_set = mt6360_timeout_set, + .fault_get = mt6360_fault_get, +}; + +static int mt6360_isnk_init_default_state(struct mt6360_led *led) +{ + struct mt6360_priv *priv = led->priv; + unsigned int regval; + u32 level; + int ret; + + ret = regmap_read(priv->regmap, MT6360_REG_ISNK(led->led_no), ®val); + if (ret) + return ret; + level = regval & MT6360_ISNK_MASK; + + ret = regmap_read(priv->regmap, MT6360_REG_RGBEN, ®val); + if (ret) + return ret; + + if (!(regval & MT6360_ISNK_ENMASK(led->led_no))) + level = LED_OFF; + + switch (led->default_state) { + case STATE_ON: + led->isnk.brightness = led->isnk.max_brightness; + break; + case STATE_KEEP: + led->isnk.brightness = min(level, led->isnk.max_brightness); + break; + default: + led->isnk.brightness = LED_OFF; + } + + return mt6360_isnk_brightness_set(&led->isnk, led->isnk.brightness); +} + +static int mt6360_flash_init_default_state(struct mt6360_led *led) +{ + struct led_classdev_flash *flash = &led->flash; + struct mt6360_priv *priv = led->priv; + u32 enable_mask = MT6360_TORCHEN_MASK | MT6360_FLCSEN_MASK(led->led_no); + u32 level; + unsigned int regval; + int ret; + + ret = regmap_read(priv->regmap, MT6360_REG_FLEDITOR(led->led_no), ®val); + if (ret) + return ret; + level = regval & MT6360_ITORCH_MASK; + + ret = regmap_read(priv->regmap, MT6360_REG_FLEDEN, ®val); + if (ret) + return ret; + + if ((regval & enable_mask) == enable_mask) + level += 1; + else + level = LED_OFF; + + switch (led->default_state) { + case STATE_ON: + flash->led_cdev.brightness = flash->led_cdev.max_brightness; + break; + case STATE_KEEP: + flash->led_cdev.brightness = min(level, flash->led_cdev.max_brightness); + break; + default: + flash->led_cdev.brightness = LED_OFF; + } + + return mt6360_torch_brightness_set(&flash->led_cdev, flash->led_cdev.brightness); +} + +#if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS) +static int mt6360_flash_external_strobe_set(struct v4l2_flash *v4l2_flash, bool enable) +{ + struct led_classdev_flash *flash = v4l2_flash->fled_cdev; + struct mt6360_led *led = container_of(flash, struct mt6360_led, flash); + struct mt6360_priv *priv = led->priv; + u32 mask = MT6360_FLCSEN_MASK(led->led_no); + u32 val = enable ? mask : 0; + int ret; + + mutex_lock(&priv->lock); + + ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDEN, mask, val); + if (ret) + goto unlock; + + if (enable) + priv->fled_strobe_used |= BIT(led->led_no); + else + priv->fled_strobe_used &= ~BIT(led->led_no); + +unlock: + mutex_unlock(&priv->lock); + return ret; +} + +static const struct v4l2_flash_ops v4l2_flash_ops = { + .external_strobe_set = mt6360_flash_external_strobe_set, +}; + +static void mt6360_init_v4l2_flash_config(struct mt6360_led *led, struct v4l2_flash_config *config) +{ + struct led_classdev *lcdev; + struct led_flash_setting *s = &config->intensity; + + lcdev = &led->flash.led_cdev; + + s->min = MT6360_ITORCH_MINUA; + s->step = MT6360_ITORCH_STEPUA; + s->val = s->max = s->min + (lcdev->max_brightness - 1) * s->step; + + config->has_external_strobe = 1; + strscpy(config->dev_name, lcdev->dev->kobj.name, sizeof(config->dev_name)); + + config->flash_faults = LED_FAULT_SHORT_CIRCUIT | LED_FAULT_TIMEOUT | + LED_FAULT_INPUT_VOLTAGE | LED_FAULT_UNDER_VOLTAGE; +} +#else +static const struct v4l2_flash_ops v4l2_flash_ops; +static void mt6360_init_v4l2_flash_config(struct mt6360_led *led, struct v4l2_flash_config *config) +{ +} +#endif + +static int mt6360_led_register(struct device *parent, struct mt6360_led *led, + struct led_init_data *init_data) +{ + struct mt6360_priv *priv = led->priv; + struct v4l2_flash_config v4l2_config = {0}; + int ret; + + if ((led->led_no == MT6360_LED_ISNK1 || led->led_no == MT6360_LED_MULTICOLOR) && + (priv->leds_active & BIT(MT6360_LED_ISNK1))) { + /* Change isink1 to SW control mode, disconnect it with charger state */ + ret = regmap_update_bits(priv->regmap, MT6360_REG_RGBEN, MT6360_CHRINDSEL_MASK, + MT6360_CHRINDSEL_MASK); + if (ret) { + dev_err(parent, "Failed to config ISNK1 to SW mode\n"); + return ret; + } + } + + switch (led->led_no) { + case MT6360_LED_MULTICOLOR: + ret = mt6360_mc_brightness_set(&led->mc.led_cdev, LED_OFF); + if (ret) { + dev_err(parent, "Failed to init multicolor brightness\n"); + return ret; + } + + ret = devm_led_classdev_multicolor_register_ext(parent, &led->mc, init_data); + if (ret) { + dev_err(parent, "Couldn't register multicolor\n"); + return ret; + } + break; + case MT6360_LED_ISNK1 ... MT6360_LED_ISNKML: + ret = mt6360_isnk_init_default_state(led); + if (ret) { + dev_err(parent, "Failed to init %d isnk state\n", led->led_no); + return ret; + } + + ret = devm_led_classdev_register_ext(parent, &led->isnk, init_data); + if (ret) { + dev_err(parent, "Couldn't register isink %d\n", led->led_no); + return ret; + } + break; + default: + ret = mt6360_flash_init_default_state(led); + if (ret) { + dev_err(parent, "Failed to init %d flash state\n", led->led_no); + return ret; + } + + ret = devm_led_classdev_flash_register_ext(parent, &led->flash, init_data); + if (ret) { + dev_err(parent, "Couldn't register flash %d\n", led->led_no); + return ret; + } + + mt6360_init_v4l2_flash_config(led, &v4l2_config); + led->v4l2_flash = v4l2_flash_init(parent, init_data->fwnode, &led->flash, + &v4l2_flash_ops, &v4l2_config); + if (IS_ERR(led->v4l2_flash)) { + dev_err(parent, "Failed to register %d v4l2 sd\n", led->led_no); + return PTR_ERR(led->v4l2_flash); + } + } + + return 0; +} + +static u32 clamp_align(u32 val, u32 min, u32 max, u32 step) +{ + u32 retval; + + retval = clamp_val(val, min, max); + if (step > 1) + retval = rounddown(retval - min, step) + min; + + return retval; +} + +static int mt6360_init_isnk_properties(struct mt6360_led *led, struct led_init_data *init_data) +{ + struct led_classdev *lcdev; + struct mt6360_priv *priv = led->priv; + struct fwnode_handle *child; + u32 step_uA = MT6360_ISNKRGB_STEPUA, max_uA = MT6360_ISNKRGB_MAXUA; + u32 val; + int num_color = 0, ret; + + if (led->led_no == MT6360_LED_MULTICOLOR) { + struct mc_subled *sub_led; + + sub_led = devm_kzalloc(priv->dev, sizeof(*sub_led) * MULTICOLOR_NUM_CHANNELS, + GFP_KERNEL); + if (!sub_led) + return -ENOMEM; + + fwnode_for_each_child_node(init_data->fwnode, child) { + u32 reg, color; + + ret = fwnode_property_read_u32(child, "reg", ®); + if (ret || reg > MT6360_LED_ISNK3 || priv->leds_active & BIT(reg)) + return -EINVAL; + + ret = fwnode_property_read_u32(child, "color", &color); + if (ret) { + dev_err(priv->dev, "led %d, no color specified\n", led->led_no); + return ret; + } + + priv->leds_active |= BIT(reg); + sub_led[num_color].color_index = color; + sub_led[num_color].channel = reg; + num_color++; + } + + if (num_color < 2) { + dev_err(priv->dev, "Multicolor must include 2 or more led channel\n"); + return -EINVAL; + } + + led->mc.num_colors = num_color; + led->mc.subled_info = sub_led; + + lcdev = &led->mc.led_cdev; + lcdev->brightness_set_blocking = mt6360_mc_brightness_set; + } else { + if (led->led_no == MT6360_LED_ISNKML) { + step_uA = MT6360_ISNKML_STEPUA; + max_uA = MT6360_ISNKML_MAXUA; + } + + lcdev = &led->isnk; + lcdev->brightness_set_blocking = mt6360_isnk_brightness_set; + } + + ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", &val); + if (ret) { + dev_warn(priv->dev, "Not specified led-max-microamp, config to the minimum\n"); + val = step_uA; + } else + val = clamp_align(val, 0, max_uA, step_uA); + + lcdev->max_brightness = val / step_uA; + + fwnode_property_read_string(init_data->fwnode, "linux,default-trigger", + &lcdev->default_trigger); + + return 0; +} + +static int mt6360_init_flash_properties(struct mt6360_led *led, struct led_init_data *init_data) +{ + struct led_classdev_flash *flash = &led->flash; + struct led_classdev *lcdev = &flash->led_cdev; + struct mt6360_priv *priv = led->priv; + struct led_flash_setting *s; + u32 val; + int ret; + + ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", &val); + if (ret) { + dev_warn(priv->dev, "Not specified led-max-microamp, config to the minimum\n"); + val = MT6360_ITORCH_MINUA; + } else + val = clamp_align(val, MT6360_ITORCH_MINUA, MT6360_ITORCH_MAXUA, + MT6360_ITORCH_STEPUA); + + lcdev->max_brightness = (val - MT6360_ITORCH_MINUA) / MT6360_ITORCH_STEPUA + 1; + lcdev->brightness_set_blocking = mt6360_torch_brightness_set; + lcdev->flags |= LED_DEV_CAP_FLASH; + + ret = fwnode_property_read_u32(init_data->fwnode, "flash-max-microamp", &val); + if (ret) { + dev_warn(priv->dev, "Not specified flash-max-microamp, config to the minimum\n"); + val = MT6360_ISTRB_MINUA; + } else + val = clamp_align(val, MT6360_ISTRB_MINUA, MT6360_ISTRB_MAXUA, MT6360_ISTRB_STEPUA); + + s = &flash->brightness; + s->min = MT6360_ISTRB_MINUA; + s->step = MT6360_ISTRB_STEPUA; + s->val = s->max = val; + + /* Always configure as min level when off to prevent flash current spike */ + ret = _mt6360_flash_brightness_set(flash, s->min); + if (ret) + return ret; + + ret = fwnode_property_read_u32(init_data->fwnode, "flash-max-timeout-us", &val); + if (ret) { + dev_warn(priv->dev, "Not specified flash-max-timeout-us, config to the minimum\n"); + val = MT6360_STRBTO_MINUS; + } else + val = clamp_align(val, MT6360_STRBTO_MINUS, MT6360_STRBTO_MAXUS, + MT6360_STRBTO_STEPUS); + + s = &flash->timeout; + s->min = MT6360_STRBTO_MINUS; + s->step = MT6360_STRBTO_STEPUS; + s->val = s->max = val; + + flash->ops = &mt6360_flash_ops; + + return 0; +} + +static int mt6360_init_common_properties(struct mt6360_led *led, struct led_init_data *init_data) +{ + const char * const states[] = { "off", "keep", "on" }; + const char *str; + int ret; + + if (!fwnode_property_read_string(init_data->fwnode, "default-state", &str)) { + ret = match_string(states, ARRAY_SIZE(states), str); + if (ret < 0) + ret = STATE_OFF; + + led->default_state = ret; + } + + return 0; +} + +static void mt6360_v4l2_flash_release(struct mt6360_priv *priv) +{ + int i; + + for (i = 0; i < priv->leds_count; i++) { + struct mt6360_led *led = priv->leds + i; + + if (led->v4l2_flash) + v4l2_flash_release(led->v4l2_flash); + } +} + +static int mt6360_led_probe(struct platform_device *pdev) +{ + struct mt6360_priv *priv; + struct fwnode_handle *child; + size_t count; + int i = 0, ret; + + count = device_get_child_node_count(&pdev->dev); + if (!count || count > MT6360_MAX_LEDS) { + dev_err(&pdev->dev, "No child node or node count over max led number %lu\n", count); + return -EINVAL; + } + + priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, count), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->leds_count = count; + priv->dev = &pdev->dev; + mutex_init(&priv->lock); + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to get parent regmap\n"); + return -ENODEV; + } + + device_for_each_child_node(&pdev->dev, child) { + struct mt6360_led *led = priv->leds + i; + struct led_init_data init_data = { .fwnode = child, }; + u32 reg; + + ret = fwnode_property_read_u32(child, "reg", ®); + if (ret) + goto out_flash_release; + + if (reg > MT6360_MAX_LEDS || priv->leds_active & BIT(reg)) + return -EINVAL; + priv->leds_active |= BIT(reg); + + led->led_no = reg; + led->priv = priv; + + ret = mt6360_init_common_properties(led, &init_data); + if (ret) + goto out_flash_release; + + if (reg == MT6360_LED_MULTICOLOR || + (reg >= MT6360_LED_ISNK1 && reg <= MT6360_LED_ISNKML)) + ret = mt6360_init_isnk_properties(led, &init_data); + else + ret = mt6360_init_flash_properties(led, &init_data); + + if (ret) + goto out_flash_release; + + ret = mt6360_led_register(&pdev->dev, led, &init_data); + if (ret) + goto out_flash_release; + + i++; + } + + platform_set_drvdata(pdev, priv); + return 0; + +out_flash_release: + mt6360_v4l2_flash_release(priv); + return ret; +} + +static int mt6360_led_remove(struct platform_device *pdev) +{ + struct mt6360_priv *priv = platform_get_drvdata(pdev); + + mt6360_v4l2_flash_release(priv); + return 0; +} + +static const struct of_device_id __maybe_unused mt6360_led_of_id[] = { + { .compatible = "mediatek,mt6360-led", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6360_led_of_id); + +static struct platform_driver mt6360_led_driver = { + .driver = { + .name = "mt6360-led", + .of_match_table = mt6360_led_of_id, + }, + .probe = mt6360_led_probe, + .remove = mt6360_led_remove, +}; +module_platform_driver(mt6360_led_driver); + +MODULE_AUTHOR("Gene Chen "); +MODULE_DESCRIPTION("MT6360 LED Driver"); +MODULE_LICENSE("GPL v2");