From patchwork Fri Jan 27 20:37:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 647770 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90579C61DA4 for ; Fri, 27 Jan 2023 20:38:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231887AbjA0Ui0 (ORCPT ); Fri, 27 Jan 2023 15:38:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231586AbjA0UiZ (ORCPT ); Fri, 27 Jan 2023 15:38:25 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 909377B7A4 for ; Fri, 27 Jan 2023 12:37:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674851861; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=4OcSJzUj2LKvO6CfVFSR0SD1r9tiU8Fuk05jF+6fhPg=; b=itEn+DoKL0eMxd/1iX0UIycVb7Woflx7Kb6Ldv93/le2aA5K+qY7vgZIRRHIcHxYBHGJxK cPnkuC31NluDuEeekuFMbFUL491Ct1vsCGiJtmqj8EeDvI4uxj1UuOx05G7CXJZ4h9NDUy 6pTt8MylM1Ul5spg9+DmdZZHJiwjEzI= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-549-M5gWZ24GPhS_vxMdCjl3cQ-1; Fri, 27 Jan 2023 15:37:36 -0500 X-MC-Unique: M5gWZ24GPhS_vxMdCjl3cQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 803F8802C15; Fri, 27 Jan 2023 20:37:35 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.192.53]) by smtp.corp.redhat.com (Postfix) with ESMTP id B040E492C14; Fri, 27 Jan 2023 20:37:32 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Linus Walleij , Laurent Pinchart , Daniel Scally , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Hao Yao , linux-media@vger.kernel.org Subject: [PATCH v6 0/5] int3472/media privacy LED support Date: Fri, 27 Jan 2023 21:37:24 +0100 Message-Id: <20230127203729.10205-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Hi All, Here is version 6 of my series to adjust the INT3472 code's handling of the privacy LED on x86 laptops with MIPI camera(s) so that it will also work on devices which have a privacy-LED GPIO but not a clk-enable GPIO (so that we cannot just tie the LED state to the clk-enable state). Changes in v6: - The LED lookup series has been merged, immutable branch pull-req here: https://lore.kernel.org/platform-driver-x86/Y9QGcA+9nlmOOy2d@google.com/ - Rework the media-core changes to correctly free the LED reference, this rework also allows dropping the patch to merge the async + fwnode code into videodev.ko - Drop the patch merging the async + fwnode code into videodev.ko Changes in v5: - Rename lookup-table names to match those from the gpio and reset lookups: s/led_name/provider/ s/consumer_dev_name/dev_id/ s/consumer_function/con_id/ - Add static inline wrappers for the v4l2_async debugfs init/exit funcs, to fix build errors when CONFIG_V4L2_ASYNC is not enabled Changes in v4: - Rename new __led_get() helper to led_module_get() - Drop of/devicetree support from "led-class: Add generic [devm_]led_get()" - Add RFC patch to re-add of/devicetree support to show that the new led_get() can easily be extended with dt support when the need for this arises (proof-of-concept dt code, not intended for merging) - New patch to built async and fwnode code into videodev.ko, to avoid issues with some of the new LED code getting builtin vs other parts possibly being in a module - Move the led_get() call to v4l2_async_register_subdev_sensor() - Move the led_disable_sysfs() call to be done at led_get() time - Address some other minor review comments Changes in v3: - Due to popular request by multiple people this new version now models the privacy LED as a LED class device. This requires being able to "tie" the LED class device to a specific camera sensor (some devices have multiple sensors + privacy-LEDs). Patch 1 adds generic privacy-LED support to the v4l2-core/v4l2-subdev.c code automatically enabling the privacy-LED when s_stream(subdev, 1) is called. So that we don't need to add privacy-LED code to all the camera sensor drivers separately (as requested by Sakari). Patches 2-5 are patches to the platform specific INT3472 code to register privacy-LED class devices + lookup table entries for privacy-LEDs described in the special INT3472 ACPI nodes found on x86 devices with MIPI cameras. This depends on the just merged LED lookup code from: https://lore.kernel.org/platform-driver-x86/Y9QGcA+9nlmOOy2d@google.com/ This series has been tested on: - Lenovo ThinkPad X1 Yoga gen 7, IPU6, front: ov2740 with privacy LED - Dell Latitude 9420, IPU 6, front: ov01a1s with privacy LED - Mirosoft Surface Go, IPU3, front: ov5693 with privacy LED back: ov8865 with privacy LED (pled not yet supported) Regards, Hans Hans de Goede (5): media: v4l2-core: Make the v4l2-core code enable/disable the privacy LED if present platform/x86: int3472/discrete: Refactor GPIO to sensor mapping platform/x86: int3472/discrete: Create a LED class device for the privacy LED platform/x86: int3472/discrete: Move GPIO request to skl_int3472_register_clock() platform/x86: int3472/discrete: Get the polarity from the _DSM entry drivers/media/v4l2-core/v4l2-async.c | 4 + drivers/media/v4l2-core/v4l2-fwnode.c | 7 ++ drivers/media/v4l2-core/v4l2-subdev-priv.h | 14 +++ drivers/media/v4l2-core/v4l2-subdev.c | 44 ++++++++ drivers/platform/x86/intel/int3472/Makefile | 2 +- .../x86/intel/int3472/clk_and_regulator.c | 34 ++++-- drivers/platform/x86/intel/int3472/common.h | 18 +++- drivers/platform/x86/intel/int3472/discrete.c | 100 ++++++++---------- drivers/platform/x86/intel/int3472/led.c | 74 +++++++++++++ include/media/v4l2-subdev.h | 3 + 10 files changed, 234 insertions(+), 66 deletions(-) create mode 100644 drivers/media/v4l2-core/v4l2-subdev-priv.h create mode 100644 drivers/platform/x86/intel/int3472/led.c