From patchwork Mon May 6 16:49:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13655777 X-Patchwork-Delegate: kieran@bingham.xyz Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 26E9D157485; Mon, 6 May 2024 16:50:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715014215; cv=none; b=sPM4y5YkZ/iqPyEQpuL6i5jwmJCmJQarP01okWLvXlA/205CGIYYena5mzeSHdqU639TMd4pn4jla078pu5fbvJcBCKPmank1iW/BuhioC/PNE9pBMfXiO/uLZwRfj0qkb2CUX+6g4Zt702VC0k1Z9DfXdIAxmp9nGtSbzK9NAw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715014215; c=relaxed/simple; bh=e1tUlg/Om7u/K9xhWvJMeciaH6rO5QVKWJ/skBBpTKQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uUDZiq6s1fzKUNSwn90vyJb4QETjD/iK0Mng5fbUX5BACpfaHco10+GMmPjo5HqOa0MOlfFRwlByaiOkFG9pkB7qx91f6ihP9PjXcoajVDo7mIpKwaZthKdFJ7beMV1Ce2DjiwswpEq+Q5YtpoM5V2tj+wPJmPbZrFWUHCGoTHQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=nwo4aHgD; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="nwo4aHgD" Received: from localhost.localdomain (unknown [IPv6:2001:b07:5d2e:52c9:cc1e:e404:491f:e6ea]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A4DBA908; Mon, 6 May 2024 18:49:59 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1715014200; bh=e1tUlg/Om7u/K9xhWvJMeciaH6rO5QVKWJ/skBBpTKQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nwo4aHgDJnwiIcLqUGqp3FuTKnFCPCZ9Af4bc3EXsqi+/APlM57VxLwqDMfywtgTS 7iJFnhM7GnPvvuACOAZAVdo3BAktqZDDedIpEQOhsgAfnDu83ttpttOFtcadV++RdZ BXE6ikz/8fVD7IviSYIccQfYlYxxGyDmhKQ06uaA= From: Jacopo Mondi To: Laurent Pinchart , =?utf-8?q?Niklas_S?= =?utf-8?q?=C3=B6derlund?= , Sakari Ailus , Kieran Bingham , Tomi Valkeinen Cc: Jacopo Mondi , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v2 10/11] media: max9286: Use the subdev active state Date: Mon, 6 May 2024 18:49:38 +0200 Message-ID: <20240506164941.110389-11-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240506164941.110389-1-jacopo.mondi@ideasonboard.com> References: <20240506164941.110389-1-jacopo.mondi@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Use the subdev active state in the max9286 driver to store the image format. Replace the .open() function call with the .init_state() one and simplify the set/get_pad_fmt() operations. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/max9286.c | 130 ++++++++++++------------------------ 1 file changed, 44 insertions(+), 86 deletions(-) diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c index 5321238cad60..7fad190cd9b3 100644 --- a/drivers/media/i2c/max9286.c +++ b/drivers/media/i2c/max9286.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include #include @@ -198,12 +197,8 @@ struct max9286_priv { struct v4l2_ctrl *pixelrate_ctrl; unsigned int pixelrate; - struct v4l2_mbus_framefmt fmt[MAX9286_N_SINKS]; struct v4l2_fract interval; - /* Protects controls and fmt structures */ - struct mutex mutex; - unsigned int nsources; unsigned int source_mask; unsigned int route_mask; @@ -788,19 +783,22 @@ static void max9286_v4l2_notifier_unregister(struct max9286_priv *priv) static int max9286_s_stream(struct v4l2_subdev *sd, int enable) { struct max9286_priv *priv = sd_to_max9286(sd); + struct v4l2_subdev_state *state; struct max9286_source *source; unsigned int i; bool sync = false; - int ret; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); if (enable) { const struct v4l2_mbus_framefmt *format; /* - * Get the format from the first used sink pad, as all sink - * formats must be identical. + * Get the format from the source pad, as all formats must be + * identical. */ - format = &priv->fmt[__ffs(priv->bound_sources)]; + format = v4l2_subdev_state_get_format(state, MAX9286_SRC_PAD); max9286_set_video_format(priv, format); max9286_set_fsync_period(priv); @@ -816,12 +814,12 @@ static int max9286_s_stream(struct v4l2_subdev *sd, int enable) for_each_source(priv, source) { ret = v4l2_subdev_call(source->sd, video, s_stream, 1); if (ret) - return ret; + goto unlock; } ret = max9286_check_video_links(priv); if (ret) - return ret; + goto unlock; /* * Wait until frame synchronization is locked. @@ -842,7 +840,8 @@ static int max9286_s_stream(struct v4l2_subdev *sd, int enable) if (!sync) { dev_err(&priv->client->dev, "Failed to get frame synchronization\n"); - return -EXDEV; /* Invalid cross-device link */ + ret = -EXDEV; /* Invalid cross-device link */ + goto unlock; } /* @@ -865,7 +864,10 @@ static int max9286_s_stream(struct v4l2_subdev *sd, int enable) max9286_i2c_mux_close(priv); } - return 0; +unlock: + v4l2_subdev_unlock_state(state); + + return ret; } static int max9286_get_frame_interval(struct v4l2_subdev *sd, @@ -922,31 +924,20 @@ static int max9286_enum_mbus_code(struct v4l2_subdev *sd, return 0; } -static struct v4l2_mbus_framefmt * -max9286_get_pad_format(struct max9286_priv *priv, - struct v4l2_subdev_state *sd_state, - unsigned int pad, u32 which) -{ - switch (which) { - case V4L2_SUBDEV_FORMAT_TRY: - return v4l2_subdev_state_get_format(sd_state, pad); - case V4L2_SUBDEV_FORMAT_ACTIVE: - return &priv->fmt[pad]; - default: - return NULL; - } -} - static int max9286_set_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { struct max9286_priv *priv = sd_to_max9286(sd); - struct v4l2_mbus_framefmt *cfg_fmt; + unsigned int pad; unsigned int i; + /* + * Disable setting format on the source pad: format is propagated + * from the sinks. + */ if (format->pad == MAX9286_SRC_PAD) - return -EINVAL; + return v4l2_subdev_get_fmt(sd, state, format); /* Validate the format. */ for (i = 0; i < ARRAY_SIZE(max9286_formats); ++i) { @@ -957,42 +948,16 @@ static int max9286_set_fmt(struct v4l2_subdev *sd, if (i == ARRAY_SIZE(max9286_formats)) format->format.code = max9286_formats[0].code; - cfg_fmt = max9286_get_pad_format(priv, sd_state, format->pad, - format->which); - if (!cfg_fmt) - return -EINVAL; - - mutex_lock(&priv->mutex); - *cfg_fmt = format->format; - mutex_unlock(&priv->mutex); - - return 0; -} - -static int max9286_get_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_format *format) -{ - struct max9286_priv *priv = sd_to_max9286(sd); - struct v4l2_mbus_framefmt *cfg_fmt; - unsigned int pad = format->pad; + *v4l2_subdev_state_get_format(state, format->pad) = format->format; /* - * Multiplexed Stream Support: Support link validation by returning the - * format of the first bound link. All links must have the same format, - * as we do not support mixing and matching of cameras connected to the - * max9286. + * Apply the same format on the source pad. As all links must have the + * same format we do so only when the first source format is set. */ - if (pad == MAX9286_SRC_PAD) - pad = __ffs(priv->bound_sources); - - cfg_fmt = max9286_get_pad_format(priv, sd_state, pad, format->which); - if (!cfg_fmt) - return -EINVAL; - - mutex_lock(&priv->mutex); - format->format = *cfg_fmt; - mutex_unlock(&priv->mutex); + pad = __ffs(priv->bound_sources); + if (pad == format->pad) + *v4l2_subdev_state_get_format(state, + MAX9286_SRC_PAD) = format->format; return 0; } @@ -1003,7 +968,7 @@ static const struct v4l2_subdev_video_ops max9286_video_ops = { static const struct v4l2_subdev_pad_ops max9286_pad_ops = { .enum_mbus_code = max9286_enum_mbus_code, - .get_fmt = max9286_get_fmt, + .get_fmt = v4l2_subdev_get_fmt, .set_fmt = max9286_set_fmt, .get_frame_interval = max9286_get_frame_interval, .set_frame_interval = max9286_set_frame_interval, @@ -1025,26 +990,17 @@ static const struct v4l2_mbus_framefmt max9286_default_format = { .xfer_func = V4L2_XFER_FUNC_DEFAULT, }; -static void max9286_init_format(struct v4l2_mbus_framefmt *fmt) +static int max9286_init_state(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state) { - *fmt = max9286_default_format; -} - -static int max9286_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) -{ - struct v4l2_mbus_framefmt *format; - unsigned int i; - - for (i = 0; i < MAX9286_N_SINKS; i++) { - format = v4l2_subdev_state_get_format(fh->state, i); - max9286_init_format(format); - } + for (unsigned int i = 0; i < MAX9286_N_PADS; i++) + *v4l2_subdev_state_get_format(state, i) = max9286_default_format; return 0; } static const struct v4l2_subdev_internal_ops max9286_subdev_internal_ops = { - .open = max9286_open, + .init_state = max9286_init_state, }; static const struct media_entity_operations max9286_media_ops = { @@ -1079,10 +1035,6 @@ static int max9286_v4l2_register(struct max9286_priv *priv) } /* Configure V4L2 for the MAX9286 itself */ - - for (i = 0; i < MAX9286_N_SINKS; i++) - max9286_init_format(&priv->fmt[i]); - v4l2_i2c_subdev_init(&priv->sd, priv->client, &max9286_subdev_ops); priv->sd.internal_ops = &max9286_subdev_internal_ops; priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; @@ -1109,14 +1061,21 @@ static int max9286_v4l2_register(struct max9286_priv *priv) if (ret) goto err_async; + priv->sd.state_lock = priv->ctrls.lock; + ret = v4l2_subdev_init_finalize(&priv->sd); + if (ret) + goto err_async; + ret = v4l2_async_register_subdev(&priv->sd); if (ret < 0) { dev_err(dev, "Unable to register subdevice\n"); - goto err_async; + goto err_subdev; } return 0; +err_subdev: + v4l2_subdev_cleanup(&priv->sd); err_async: v4l2_ctrl_handler_free(&priv->ctrls); max9286_v4l2_notifier_unregister(priv); @@ -1126,6 +1085,7 @@ static int max9286_v4l2_register(struct max9286_priv *priv) static void max9286_v4l2_unregister(struct max9286_priv *priv) { + v4l2_subdev_cleanup(&priv->sd); v4l2_ctrl_handler_free(&priv->ctrls); v4l2_async_unregister_subdev(&priv->sd); max9286_v4l2_notifier_unregister(priv); @@ -1629,8 +1589,6 @@ static int max9286_probe(struct i2c_client *client) if (!priv) return -ENOMEM; - mutex_init(&priv->mutex); - priv->client = client; /* GPIO values default to high */