From patchwork Tue Apr 29 12:59:07 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Leitner X-Patchwork-Id: 885975 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E20742C1784; Tue, 29 Apr 2025 12:59:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745931557; cv=none; b=qUt5tvczxDWGtk/3gf5JJ8le45eJmsTBfnTHYZWYWZ929u9BIVu17kvXadJPu1J/8fhxkzoPnltrSwKJEzKxEIt6wJcW6egkZxRUNqYEQenAZtj0qCuRVI9AS1IkLoml3bpsxwzUmdlSVxIaFFYimqNfYgZjtTFvEgPKHCSrg8o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745931557; c=relaxed/simple; bh=HDEsgaluUKEPdxixqt/Aekf5T3lFNnaVwddtdEWptfw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ISuAEK80SB0eV5RHUvvDAZhCNVHetTHIjApx4Nif2iRwMBLuf79vu3SHq7y/Ph7UAk2oBQturo2/qahJwoTERMoDbQlIuUJJxg1NbHEiEtdr8zac58GDepCsvPbfD4N0/U9000fuWgP0+4etdFnaR/pCOPP3wUze4d1lafosai8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=EtxJBdET; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="EtxJBdET" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5C2E0C4CEEB; Tue, 29 Apr 2025 12:59:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux.dev; s=korg; t=1745931556; bh=HDEsgaluUKEPdxixqt/Aekf5T3lFNnaVwddtdEWptfw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=EtxJBdETblC80AUHOc6K/T3RWxhyzwH1JHkCdVlJN7/3VGTW4TOjhVDgwjaoRQxuP 244kQ8uJW0Nvay5XDj6VPpWBrowhmBNkWWoiAR7jdCsBawljFdMrJzOcLGXEF8mwV6 rEpKkGO5Vc1LyJbBRoKTkC+lDgxBqlj72PZUgcAU= Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46D36C3ABB0; Tue, 29 Apr 2025 12:59:16 +0000 (UTC) From: Richard Leitner Date: Tue, 29 Apr 2025 14:59:07 +0200 Subject: [PATCH v3 2/9] leds: flash: add support for flash/stobe duration Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250429-ov9282-flash-strobe-v3-2-2105ce179952@linux.dev> References: <20250429-ov9282-flash-strobe-v3-0-2105ce179952@linux.dev> In-Reply-To: <20250429-ov9282-flash-strobe-v3-0-2105ce179952@linux.dev> To: Sakari Ailus , Dave Stevenson , Mauro Carvalho Chehab , Lee Jones , Pavel Machek , Laurent Pinchart Cc: Hans Verkuil , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, Richard Leitner X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1745931554; l=2827; i=richard.leitner@linux.dev; s=20250225; h=from:subject:message-id; bh=HDEsgaluUKEPdxixqt/Aekf5T3lFNnaVwddtdEWptfw=; b=6M/61HmZntl6x9awtwRbQFDQpMX+zbdz7fFVJ+CjaQLXInH1bRos1VW9t5D31eRmSUYhwouXc Gn9Y9mGn5X2A1cPjJxiEGSaLbzsnf9Ob5ImmdvMY2IkG8hN1YC+O7L+ X-Developer-Key: i=richard.leitner@linux.dev; a=ed25519; pk=8hZNyyyQFqZ5ruVJsSGBSPIrmJpfDm5HwHU4QVOP1Pk= X-Endpoint-Received: by B4 Relay for richard.leitner@linux.dev/20250225 with auth_id=350 Add support for the new V4L2_CID_FLASH_DURATION control to the leds driver. Signed-off-by: Richard Leitner --- drivers/leds/led-class-flash.c | 15 +++++++++++++++ include/linux/led-class-flash.h | 16 ++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/drivers/leds/led-class-flash.c b/drivers/leds/led-class-flash.c index f4e26ce84862c05092a9598e63ed301967852f13..165035a8826ca7d44a5cd265a5130a76c6e94347 100644 --- a/drivers/leds/led-class-flash.c +++ b/drivers/leds/led-class-flash.c @@ -440,6 +440,21 @@ int led_update_flash_brightness(struct led_classdev_flash *fled_cdev) } EXPORT_SYMBOL_GPL(led_update_flash_brightness); +int led_set_flash_duration(struct led_classdev_flash *fled_cdev, u32 duration) +{ + struct led_classdev *led_cdev = &fled_cdev->led_cdev; + struct led_flash_setting *s = &fled_cdev->duration; + + s->val = duration; + led_clamp_align(s); + + if (!(led_cdev->flags & LED_SUSPENDED)) + return call_flash_op(fled_cdev, duration_set, s->val); + + return 0; +} +EXPORT_SYMBOL_GPL(led_set_flash_duration); + MODULE_AUTHOR("Jacek Anaszewski "); MODULE_DESCRIPTION("LED Flash class interface"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h index 36df927ec4b7dcaf9074c6ef32ac8ce83a87a79d..21ec856c36bc67decda46aa8ff1c040ffdcf1181 100644 --- a/include/linux/led-class-flash.h +++ b/include/linux/led-class-flash.h @@ -45,6 +45,8 @@ struct led_flash_ops { int (*timeout_set)(struct led_classdev_flash *fled_cdev, u32 timeout); /* get the flash LED fault */ int (*fault_get)(struct led_classdev_flash *fled_cdev, u32 *fault); + /* set flash duration */ + int (*duration_set)(struct led_classdev_flash *fled_cdev, u32 duration); }; /* @@ -75,6 +77,9 @@ struct led_classdev_flash { /* flash timeout value in microseconds along with its constraints */ struct led_flash_setting timeout; + /* flash timeout value in microseconds along with its constraints */ + struct led_flash_setting duration; + /* LED Flash class sysfs groups */ const struct attribute_group *sysfs_groups[LED_FLASH_SYSFS_GROUPS_SIZE]; }; @@ -209,4 +214,15 @@ int led_set_flash_timeout(struct led_classdev_flash *fled_cdev, u32 timeout); */ int led_get_flash_fault(struct led_classdev_flash *fled_cdev, u32 *fault); +/** + * led_set_flash_duration - set flash LED duration + * @fled_cdev: the flash LED to set + * @timeout: the flash duration to set it to + * + * Set the flash strobe duration. + * + * Returns: 0 on success or negative error value on failure + */ +int led_set_flash_duration(struct led_classdev_flash *fled_cdev, u32 duration); + #endif /* __LINUX_FLASH_LEDS_H_INCLUDED */