From patchwork Tue Sep 17 15:02:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 829339 Received: from lahtoruutu.iki.fi (lahtoruutu.iki.fi [185.185.170.37]) (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 2065319F478 for ; Tue, 17 Sep 2024 15:03:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.185.170.37 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726585423; cv=none; b=pIgXcXKVnZSdekqTdLFhzO1G4coyqPbk0jGtzYwm//5lda2eNjruXtQ1ZxK/cPNGxuPSogJdxBZnYn+cQA5xot7VED4wklBw54yVBlZcU8taWjiphlqH3wlHUgpls+ugQXrue7vizf/biuasxiBdNeoOzmPDwzX6ziZHMfY/sCE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726585423; c=relaxed/simple; bh=LzkyaGCkD2JJfd7AmZQhSWn4T2xMLYGK4bCQE5j2kLc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=sxeoyY8susAh7eTwzZ3kFesn2mNcTtCzOXANIhhh5Ql3PnEQ3wEckIApj8/F+qBf33KIsajbGZQxmK+/z80HriIxlWHSaNXafTAKk2+iA52ayVJsxsx2dV6FsaklYXhtI2WQOJs8uiyiO6Ln/AF38UJGPZJM0QT3i0dVOL/nS+4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=iki.fi; arc=none smtp.client-ip=185.185.170.37 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iki.fi Received: from hillosipuli.retiisi.eu (2a00-1190-d1dd-0-c641-1eff-feae-163c.v6.cust.suomicom.net [IPv6:2a00:1190:d1dd:0:c641:1eff:feae:163c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: sailus) by lahtoruutu.iki.fi (Postfix) with ESMTPSA id 4X7Q4w5qhWz49Q4J; Tue, 17 Sep 2024 18:02:56 +0300 (EEST) Received: from vihersipuli.localdomain (vihersipuli.localdomain [IPv6:fd35:1bc8:1a6:d3d5::84:2]) by hillosipuli.retiisi.eu (Postfix) with ESMTP id B8716634C97; Tue, 17 Sep 2024 18:02:54 +0300 (EEST) Received: from sailus by vihersipuli.localdomain with local (Exim 4.96) (envelope-from ) id 1sqZjC-0004au-1F; Tue, 17 Sep 2024 18:02:54 +0300 From: Sakari Ailus To: linux-media@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, tomi.valkeinen@ideasonboard.com, Alain Volmat , Benjamin Mugnier , hverkuil@xs4all.nl Subject: [PATCH v2 2/3] media: Documentation: Update {enable, disable}_streams documentation Date: Tue, 17 Sep 2024 18:02:53 +0300 Message-Id: <20240917150254.17639-3-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20240917150254.17639-1-sakari.ailus@linux.intel.com> References: <20240917150254.17639-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Document the expected {enable,disable}_streams callback behaviour for drivers that are stream-unaware i.e. don't specify the V4L2_SUBDEV_CAP_STREAMS sub-device capability flat. In this specific case, the mask argument can be ignored. Signed-off-by: Sakari Ailus --- include/media/v4l2-subdev.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 3cc6b4a5935f..67a6e6ec58b8 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -834,11 +834,19 @@ struct v4l2_subdev_state { * v4l2_subdev_init_finalize() at initialization time). Do not call * directly, use v4l2_subdev_enable_streams() instead. * + * Drivers that support only a single stream without setting the + * V4L2_SUBDEV_CAP_STREAMS sub-device capatility flag do not need to + * be concerned with the mask argument. + * * @disable_streams: Disable the streams defined in streams_mask on the given * source pad. Subdevs that implement this operation must use the active * state management provided by the subdev core (enabled through a call to * v4l2_subdev_init_finalize() at initialization time). Do not call * directly, use v4l2_subdev_disable_streams() instead. + * + * Drivers that support only a single stream without setting the + * V4L2_SUBDEV_CAP_STREAMS sub-device capatility flag do not need to + * be concerned with the mask argument. */ struct v4l2_subdev_pad_ops { int (*enum_mbus_code)(struct v4l2_subdev *sd,