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arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Received: from [127.0.1.1] (91-154-34-181.elisa-laajakaista.fi [91.154.34.181]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 8DDF1DD9; Thu, 4 Apr 2024 12:49:43 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1712227783; bh=NEDsCxZIlpnO7rRc8IyLQGQLGkbh0uyi1WhbgqXQfFU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=VhMFlkk6pEcu3tuxF+3fDunD2xwm7M0D6CWtUE5oHCw2KBUzWqxKWgkBI1OTFo6IK Pye//Wcm8AmRIm4JaXaB7uBqi+hKpZbX35pEiIJHXR0PF7ioDPrcmMJx6VXhDANOaB r+7vxfnF5E+T6jB8/xofQAQm18ca669ChR5tnTMs= From: Tomi Valkeinen Date: Thu, 04 Apr 2024 13:50:03 +0300 Subject: [PATCH 4/4] media: subdev: Support enable/disable_streams for non-streams subdevs Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240404-enable-streams-impro-v1-4-1017a35bbe07@ideasonboard.com> References: <20240404-enable-streams-impro-v1-0-1017a35bbe07@ideasonboard.com> In-Reply-To: <20240404-enable-streams-impro-v1-0-1017a35bbe07@ideasonboard.com> To: Mauro Carvalho Chehab , Hans Verkuil , Laurent Pinchart , Sakari Ailus , Umang Jain Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Tomi Valkeinen X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; 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a=openpgp; fpr=C4380C3E965EFD81079FF3A7FA3DAA8CBC961EF5 X-LSpam-Score: -2.6 (--) X-LSpam-Report: No, score=-2.6 required=5.0 tests=ARC_SIGNED=0.001,ARC_VALID=-0.1,BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,DMARC_MISSING=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_NONE=-0.0001,SPF_HELO_NONE=0.001,SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no Currently a subdevice without streams support (V4L2_SUBDEV_FL_STREAMS), e.g. a sensor subdevice with a single source pad, must use the v4l2_subdev_video_ops.s_stream op, instead of v4l2_subdev_pad_ops.enable/disable_streams. This is because the enable/disable_streams machinery requires a routing table which a subdev cannot have with a single pad. Implement enable/disable_streams support for subdevs without streams support. As they don't support multiple streams, each pad must contain a single stream, with stream ID 0, and rather than tracking enabled streams, we can track enabled pads similarly to the enable/disable_streams_fallback by using the sd->enabled_pads field. Signed-off-by: Tomi Valkeinen --- drivers/media/v4l2-core/v4l2-subdev.c | 86 +++++++++++++++++++++++------------ 1 file changed, 58 insertions(+), 28 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 91298bb84e6b..d86f930be2c4 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -2158,21 +2158,32 @@ int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad, * Verify that the requested streams exist and that they are not * already enabled. */ - for (i = 0; i < state->stream_configs.num_configs; ++i) { - struct v4l2_subdev_stream_config *cfg = - &state->stream_configs.configs[i]; + if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { + for (i = 0; i < state->stream_configs.num_configs; ++i) { + struct v4l2_subdev_stream_config *cfg = + &state->stream_configs.configs[i]; - if (cfg->pad != pad || !(streams_mask & BIT_ULL(cfg->stream))) - continue; + if (cfg->pad != pad || !(streams_mask & BIT_ULL(cfg->stream))) + continue; - found_streams |= BIT_ULL(cfg->stream); + found_streams |= BIT_ULL(cfg->stream); - if (cfg->enabled) { - dev_dbg(dev, "stream %u already enabled on %s:%u\n", - cfg->stream, sd->entity.name, pad); + if (cfg->enabled) { + dev_dbg(dev, "stream %u already enabled on %s:%u\n", + cfg->stream, sd->entity.name, pad); + ret = -EALREADY; + goto done; + } + } + } else { + if (sd->enabled_pads & BIT_ULL(pad)) { + dev_dbg(dev, "stream 0 already enabled on %s:%u\n", + sd->entity.name, pad); ret = -EALREADY; goto done; } + + found_streams = BIT_ULL(0); } if (found_streams != streams_mask) { @@ -2194,12 +2205,16 @@ int v4l2_subdev_enable_streams(struct v4l2_subdev *sd, u32 pad, } /* Mark the streams as enabled. */ - for (i = 0; i < state->stream_configs.num_configs; ++i) { - struct v4l2_subdev_stream_config *cfg = - &state->stream_configs.configs[i]; + if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { + for (i = 0; i < state->stream_configs.num_configs; ++i) { + struct v4l2_subdev_stream_config *cfg = + &state->stream_configs.configs[i]; - if (cfg->pad == pad && (streams_mask & BIT_ULL(cfg->stream))) - cfg->enabled = true; + if (cfg->pad == pad && (streams_mask & BIT_ULL(cfg->stream))) + cfg->enabled = true; + } + } else { + sd->enabled_pads |= BIT_ULL(pad); } done: @@ -2281,21 +2296,32 @@ int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, * Verify that the requested streams exist and that they are not * already disabled. */ - for (i = 0; i < state->stream_configs.num_configs; ++i) { - struct v4l2_subdev_stream_config *cfg = - &state->stream_configs.configs[i]; + if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { + for (i = 0; i < state->stream_configs.num_configs; ++i) { + struct v4l2_subdev_stream_config *cfg = + &state->stream_configs.configs[i]; - if (cfg->pad != pad || !(streams_mask & BIT_ULL(cfg->stream))) - continue; + if (cfg->pad != pad || !(streams_mask & BIT_ULL(cfg->stream))) + continue; - found_streams |= BIT_ULL(cfg->stream); + found_streams |= BIT_ULL(cfg->stream); - if (!cfg->enabled) { - dev_dbg(dev, "stream %u already disabled on %s:%u\n", - cfg->stream, sd->entity.name, pad); + if (!cfg->enabled) { + dev_dbg(dev, "stream %u already disabled on %s:%u\n", + cfg->stream, sd->entity.name, pad); + ret = -EALREADY; + goto done; + } + } + } else { + if (!(sd->enabled_pads & BIT_ULL(pad))) { + dev_dbg(dev, "stream 0 already disabled on %s:%u\n", + sd->entity.name, pad); ret = -EALREADY; goto done; } + + found_streams = BIT_ULL(0); } if (found_streams != streams_mask) { @@ -2317,12 +2343,16 @@ int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, } /* Mark the streams as disabled. */ - for (i = 0; i < state->stream_configs.num_configs; ++i) { - struct v4l2_subdev_stream_config *cfg = - &state->stream_configs.configs[i]; + if (sd->flags & V4L2_SUBDEV_FL_STREAMS) { + for (i = 0; i < state->stream_configs.num_configs; ++i) { + struct v4l2_subdev_stream_config *cfg = + &state->stream_configs.configs[i]; - if (cfg->pad == pad && (streams_mask & BIT_ULL(cfg->stream))) - cfg->enabled = false; + if (cfg->pad == pad && (streams_mask & BIT_ULL(cfg->stream))) + cfg->enabled = false; + } + } else { + sd->enabled_pads &= ~BIT_ULL(pad); } done: