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[93.34.93.173]) by smtp.googlemail.com with ESMTPSA id r3-20020adfda43000000b003047ae72b14sm8624916wrl.82.2023.04.26.17.18.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Apr 2023 17:18:54 -0700 (PDT) From: Christian Marangi To: Jonathan Corbet , Pavel Machek , Lee Jones , Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Christian Marangi , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 02/11] leds: add binding to check support for LED hw control Date: Thu, 27 Apr 2023 02:15:32 +0200 Message-Id: <20230427001541.18704-3-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230427001541.18704-1-ansuelsmth@gmail.com> References: <20230427001541.18704-1-ansuelsmth@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1764287573514346822?= X-GMAIL-MSGID: =?utf-8?q?1764287573514346822?= Add 2 binding to facilitate checking support for LED hw control. Add a mask for the LED driver to declare support for specific modes of the defined hw control trigger. Add hw_control_is_supported() to ask the LED driver if the requested mode by the trigger are supported and the LED can be setup to follow the requested modes. Signed-off-by: Christian Marangi --- include/linux/leds.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/leds.h b/include/linux/leds.h index b3bd1cc8ace8..06a67c62ed6e 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -157,6 +157,8 @@ struct led_classdev { /* Unique trigger name supported by LED set in hw control mode */ const char *hw_control_trigger; + /* Mask of the different supported trigger mode in hw control mode */ + unsigned long trigger_supported_flags_mask; /* * Activate hardware control, LED driver will use the provided flags * from the supported trigger and setup the LED to be driven by hardware @@ -174,6 +176,12 @@ struct led_classdev { */ int (*hw_control_get)(struct led_classdev *led_cdev, unsigned long *flags); + /* + * Check if the LED driver supports the requested mode provided by the + * defined supported trigger to setup the LED to hw control mode. + */ + int (*hw_control_is_supported)(struct led_classdev *led_cdev, + unsigned long flags); #endif #ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED