From patchwork Thu Nov 19 21:50:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda X-Patchwork-Id: 11919023 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=-13.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 6AF8BC64E90 for ; Thu, 19 Nov 2020 21:50:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2B8BB22202 for ; Thu, 19 Nov 2020 21:50:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="VF20oNx/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726306AbgKSVu2 (ORCPT ); Thu, 19 Nov 2020 16:50:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726105AbgKSVu2 (ORCPT ); Thu, 19 Nov 2020 16:50:28 -0500 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFD91C0613D4 for ; Thu, 19 Nov 2020 13:50:27 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id u12so8048706wrt.0 for ; Thu, 19 Nov 2020 13:50:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rXd2Y9BPUP+hnJL/FOxqeTmdTbabxcES+pTsOfva6bA=; b=VF20oNx/2JEUfQe3W+Z9FLA2x69adkZZxcFDA7pBJMscwFRiD7DNKNe0aFbgPB1oT6 AR9bNah2BycGf2EoAjvNU6k2JBntrcNjgfAtG+vjCVpl66U6ajj7Q4EInG2q3yJZ/IxK LsrubevvB9+OuBXh43LzPI9PlKwBfHxV1b7lw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=rXd2Y9BPUP+hnJL/FOxqeTmdTbabxcES+pTsOfva6bA=; b=fKnfSgn735euqebfGcyYYKfqBJ+d0Bq0tdILMp8WKXk/O/wN/KGUBZNXAO6styJ7Nv FQELVL4BHZ2+tNUUsGpHPsO52BXJ7UHt6V75BTGIFnpePqN40EZDVRxR3jLtJV9rJSAZ LaKuTw3X6CykbuTWEnUtRg6Uu/gUFBAIqDxJI/pz5vMDRr0XBnoSC8/DSshmGZZ6N9Zr B6UXAIG4rdJku8Rx4NVzoMPfXmhP4xxIKBnWIY/YAHRsaZKw2a9qyv0Zz0CeaWhcDeSN JNX4kMPgpD+WuFwtFA+8Mb9vi0yIItDyBWQOYTG3lAz56oUEr0G+KslN1K4JizInHaJO 0q6g== X-Gm-Message-State: AOAM530rhjlu7+FbaDjhwRsJsViVArDVweekJuqtharmUsDVNkHAe/aV Z8zEISWpp6TkLJafoHfs1QYpAY2ts9Lc5wDD X-Google-Smtp-Source: ABdhPJw/Aj3QSpqIe3URcPUvwq+c+BXysYVzdBCtGucQ4oLXGKvkWnFHk3HVMEvqILfVMldo1VPshg== X-Received: by 2002:adf:efc2:: with SMTP id i2mr12025399wrp.383.1605822626578; Thu, 19 Nov 2020 13:50:26 -0800 (PST) Received: from alco.lan ([80.71.134.83]) by smtp.gmail.com with ESMTPSA id t136sm1818859wmt.18.2020.11.19.13.50.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Nov 2020 13:50:26 -0800 (PST) From: Ricardo Ribalda To: Laurent Pinchart , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ricardo Ribalda Subject: [PATCH v3 0/8] Show privacy_gpio as a v4l2_ctrl Date: Thu, 19 Nov 2020 22:50:12 +0100 Message-Id: <20201119215020.508487-1-ribalda@chromium.org> X-Mailer: git-send-email 2.29.2.299.gdc1121823c-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Some devices can implement a physical switch to disable the input of the camera on demand. Think of it like an elegant privacy sticker. The system can read the status of the privacy switch via a GPIO. The ACPI table maps this GPIO to the USB device via _CRS and _DSD descriptors, so the kernel can find it. The userspace applications need to know if the privacy pin is enabled or not. The obvious way to show it to userspace is via the V4L2_CID_PRIVACY control. This patchset implement this functionality. v2: Thanks to all the comments from Joe Perches - Rework of printk macros v2: Thanks to all the comments from Laurent! - move guid to unit - support entities with no pads - CodeStyle - Irq handling - pr_cont - new ids Ricardo Ribalda (8): media: uvcvideo: Move guid to entity media: uvcvideo: Allow external entities media: uvcvideo: Allow entities with no pads media: uvcvideo: Entity defined get_info and get_cur media: uvcvideo: Implement UVC_EXT_GPIO_UNIT media: uvcvideo: Add Privacy control based on EXT_GPIO media: uvcvideo: Use dev_ printk aliases media: uvcvideo: New macro uvc_trace_cont drivers/media/usb/uvc/uvc_ctrl.c | 80 +++++---- drivers/media/usb/uvc/uvc_driver.c | 249 +++++++++++++++++++++-------- drivers/media/usb/uvc/uvc_entity.c | 10 +- drivers/media/usb/uvc/uvc_status.c | 13 +- drivers/media/usb/uvc/uvc_video.c | 51 +++--- drivers/media/usb/uvc/uvcvideo.h | 52 ++++-- 6 files changed, 309 insertions(+), 146 deletions(-)