From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 06FF5C04AAF for ; Thu, 16 May 2019 18:03:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B7ED920833 for ; Thu, 16 May 2019 18:03:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="UMjuiWE/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726657AbfEPSDf (ORCPT ); Thu, 16 May 2019 14:03:35 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:42334 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726380AbfEPSDf (ORCPT ); Thu, 16 May 2019 14:03:35 -0400 Received: from pendragon.ideasonboard.com (dfj612yhrgyx302h3jwwy-3.rev.dnainternet.fi [IPv6:2001:14ba:21f5:5b00:ce28:277f:58d7:3ca4]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 8E9452FD; Thu, 16 May 2019 20:03:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1558029812; bh=BQ5U9PGhU9tRnAdLuwBp2NlGPivhbS/WRRzQnbH58zA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=UMjuiWE/IFwmwAbqHldLONcSBD+xSlB/7YzAStKDoxUvAPharzXXHtxqajszgsjcM 8QIMkbpTEqTsZaQwYtfzjKh5+cRGjlRfjMlJr5s2EQfeLWBgsWeMunEpCQMDwSQ+Qu YPNy4XehB92QdubhJq9xVh0bj/AUUWHbMzGknVLc= Date: Thu, 16 May 2019 21:03:15 +0300 From: Laurent Pinchart To: Marco Felsch Cc: Mauro Carvalho Chehab , sakari.ailus@linux.intel.com, hans.verkuil@cisco.com, jacopo+renesas@jmondi.org, robh+dt@kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, kernel@pengutronix.de Subject: Re: [PATCH v6 05/13] media: tvp5150: add input source selection of_graph support Message-ID: <20190516180315.GQ14820@pendragon.ideasonboard.com> References: <20190415124413.18456-1-m.felsch@pengutronix.de> <20190415124413.18456-6-m.felsch@pengutronix.de> <20190514152545.6020dcd8@coco.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190514152545.6020dcd8@coco.lan> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hello Marco, Thank you for the patch. On Tue, May 14, 2019 at 03:25:45PM -0300, Mauro Carvalho Chehab wrote: > Em Mon, 15 Apr 2019 14:44:05 +0200 Marco Felsch escreveu: > > > This patch adds the of_graph support to describe the tvp connections. > > Physical the TVP5150 has three ports: AIP1A, AIP1B and YOUT. As result > > of discussion [1],[2] the device-tree maps these ports 1:1. The svideo > > connector must be conneted to port@0/endpoint@1, look at the Documentation According to [2], it must be connected to port port@0 and port@1, not just port@0. > > for more information. Since the TVP5150 is a converter the device-tree > > must contain at least 1-input and 1-output port. The mc-connectors and > > mc-links are only created if the device-tree contains the corresponding > > connector nodes. If more than one connector is available the > > media_entity_operations.link_setup() callback ensures that only one > > connector is active. > > > > [1] https://www.spinics.net/lists/linux-media/msg138545.html > > [2] https://www.spinics.net/lists/linux-media/msg138546.html > > > > Signed-off-by: Marco Felsch > > --- > > Changelog: > > > > [1] https://patchwork.kernel.org/cover/10794703/ > > [2] https://patchwork.kernel.org/cover/10786553/ > > > > v6: > > - fix misspelled comments > > - use 'unsigned int' where it's possible > > - cleanup ifdef part-2: > > - tvp5150_mc_init, tvp5150_add_of_connectors: add surrounding > > CONFIG_MEDIA_CONTROLLER ifdef and stubs to improve readability > > - tvp5150_mc_init: uniform interface, use 'struct tvp5150' since all > > internal function do this. > > - tvp5150_add_of_connectors: call within probe() to make it cleaner > > - tvp5150_parse_dt: move local loop vars within the loop. > > > > v5: > > - Fixing build deps: > > - tvp5150_mc_init: fix CONFIG_MEDIA_CONTROLLER deps > > - struct tvp5150: drop CONFIG_MEDIA_CONTROLLER conditional property > > includes. This leads into to complex deps for futher development. > > - tvp5150_dt_cleanup: enable function only if CONFIG_OF is enabled > > - tvp5150_parse_dt: enable function only if CONFIG_OF is enabled > > - tvp5150_probe: call tvp5150_dt_cleanup only if CONFIG_OF is enabled > > > > - Simplify link_setup routine: > > - use generic connector parsing since both series [1,2] are squashed into > > one > > - struct tvp5150: drop pads_state and modify_second_link property > > due to link_setup() rework. > > - tvp5150_link_setup: add more comments > > - tvp5150_link_setup: simply the link setup routine a lot. Edit the 2nd > > link directly within the driver instead of a recursive media-framework > > call (__media_entity_setup_link). This improves the readability and > > shrinks the driver code. > > - tvp5150_link_setup: disable all active links in case user switches > > connectors without disable it first. > > - tvp5150_registered: simplify default link enable path due to link_setup() > > rework. > > > > - General cleanups > > - tvp5150_parse_dt: drop unecessary test > > - tvp5150_parse_dt: add err message due to misconfiguration > > - tvp5150_parse_dt: make use of V4L2_MBUS_UNKNOWN definition > > - s/dev_dbg/dev_dbg_lvl > > > > v4: > > - rebase on top of media_tree/master, fix merge conflict due to commit > > 60359a28d592 ("media: v4l: fwnode: Initialise the V4L2 fwnode endpoints > > to zero") > > > > v3: > > - probe(): s/err/err_free_v4l2_ctrls > > - drop MC dependency for tvp5150_pads > > > > v2: > > - adapt commit message > > - unify ifdef switches > > - rename tvp5150_valid_input -> tvp5150_of_valid_input, to be more precise > > - mc: use 2-input and 1-output pad > > - mc: link svideo connector to both input pads > > - mc: enable/disable svideo links in one go > > - mc: change link_setup() behaviour, switch the input src don't require a > > explicite disable before. > > - mc: rename 'local' media_pad param to tvp5150_pad to avoid confusion > > - mc: enable link to the first available connector and set the > > corresponding tvp5150 input src per default during registered() > > - mc/of: factor out oftree connector allocation > > - of: drop svideo dt port > > - of: move svideo connector to port@0/endpoint@1 > > - of: require at least 1-in and 1-out endpoint > > > > drivers/media/i2c/tvp5150.c | 409 ++++++++++++++++++++++++++++++++---- > > 1 file changed, 370 insertions(+), 39 deletions(-) > > > > diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c > > index 89da921c8886..4e3228b2ccbc 100644 > > --- a/drivers/media/i2c/tvp5150.c > > +++ b/drivers/media/i2c/tvp5150.c > > @@ -44,16 +44,29 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)"); > > #define dprintk0(__dev, __arg...) dev_dbg_lvl(__dev, 0, 0, __arg) > > > > enum tvp5150_pads { > > - TVP5150_PAD_IF_INPUT, > > + TVP5150_PAD_AIP1A = TVP5150_COMPOSITE0, > > + TVP5150_PAD_AIP1B, > > TVP5150_PAD_VID_OUT, > > TVP5150_NUM_PADS > > }; > > > > +struct tvp5150_connector { > > + struct v4l2_fwnode_connector base; > > + struct media_entity ent; > > + struct media_pad pad; > > +}; > > + > > struct tvp5150 { > > struct v4l2_subdev sd; > > -#ifdef CONFIG_MEDIA_CONTROLLER > > + /* additional endpoint for the svideo connector */ Could you please capitalize the first word of all comments to match the driver style ? > > + struct device_node *endpoints[TVP5150_NUM_PADS + 1]; As the endpoints are only used at probe time, I would declare this as a local variable in the probe function and pass it to both tvp5150_add_of_connectors() and tvp5150_parse_dt(). If you order the calls correctly it should simplify the probe error handling. > > + unsigned int endpoints_num; > > + > > + /* media-ctl properties */ media-ctl makes me think about the userspace application, maybe "Media controller properties" ? > > struct media_pad pads[TVP5150_NUM_PADS]; > > -#endif > > + struct tvp5150_connector *connectors; > > + int connectors_num; unsigned int ? > > + > > struct v4l2_ctrl_handler hdl; > > struct v4l2_rect rect; > > struct regmap *regmap; > > @@ -1167,6 +1180,131 @@ static int tvp5150_enum_frame_size(struct v4l2_subdev *sd, > > return 0; > > } > > > > +/**************************************************************************** > > + * Media entity ops > > + ****************************************************************************/ > > +#if defined(CONFIG_MEDIA_CONTROLLER) Should we depend on CONFIG_MEDIA_CONTROLLER instead, especially since you remove the similar conditional in the struct tvp5150 definition and in the probe function ? > > +static int tvp5150_set_link(struct media_pad *connector_pad, > > + struct media_pad *tvp5150_pad, u32 flags) > > +{ > > + struct media_link *link; > > + > > + link = media_entity_find_link(connector_pad, tvp5150_pad); > > + if (!link) > > + return -EINVAL; > > + > > + link->flags = flags; > > + link->reverse->flags = link->flags; > > + > > + return 0; > > +} > > + > > +static int tvp5150_disable_all_input_links(struct tvp5150 *decoder) > > +{ > > + struct media_pad *connector_pad; > > + unsigned int i; > > + int err; > > + > > + for (i = 0; i < TVP5150_NUM_PADS - 1; i++) { > > + connector_pad = media_entity_remote_pad(&decoder->pads[i]); > > + if (!connector_pad) > > + continue; > > + > > + err = tvp5150_set_link(connector_pad, &decoder->pads[i], 0); > > + if (err) > > + return err; > > + } > > + > > + return 0; > > +} > > + > > +static int tvp5150_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, > > + u32 config); > > + > > +static int tvp5150_link_setup(struct media_entity *entity, > > + const struct media_pad *tvp5150_pad, > > + const struct media_pad *remote, u32 flags) > > +{ > > + struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); > > + struct tvp5150 *decoder = to_tvp5150(sd); > > + struct media_pad *other_tvp5150_pad = > > + &decoder->pads[tvp5150_pad->index ^ 1]; > > + bool is_svideo = false; > > + unsigned int i; > > + int err; > > + > > + /* > > + * The TVP5150 state is determined by the enabled sink pad link(s). > > + * Enabling or disabling the source pad link has no effect. > > + */ > > + if (tvp5150_pad->flags & MEDIA_PAD_FL_SOURCE) > > + return 0; > > + > > + /* Check if the svideo connector should be enabled */ > > + for (i = 0; i < decoder->connectors_num; i++) { > > + if (remote->entity == &decoder->connectors[i].ent) { > > > + is_svideo = > > + decoder->connectors[i].base.type == V4L2_CON_SVIDEO; > > Nitpick: > > I would actually prefer to keep this on a single line. Ok, it will violate > the 80-columns, but it would be better than the above (IMHO). > > > + break; > > + } > > + } > > + > > + dev_dbg_lvl(sd->dev, 1, debug, "link setup '%s':%d->'%s':%d[%d]", > > + remote->entity->name, remote->index, > > + tvp5150_pad->entity->name, tvp5150_pad->index, > > + flags & MEDIA_LNK_FL_ENABLED); > > + if (is_svideo) > > + dev_dbg_lvl(sd->dev, 1, debug, > > + "link setup '%s':%d->'%s':%d[%d]", > > + remote->entity->name, remote->index, > > + other_tvp5150_pad->entity->name, > > + other_tvp5150_pad->index, > > + flags & MEDIA_LNK_FL_ENABLED); > > + > > + /* > > + * The TVP5150 has an internal mux which allows the following setup: > > + * > > + * comp-connector1 --\ > > + * |---> AIP1A > > + * / > > + * svideo-connector -| > > + * \ > > + * |---> AIP1B > > + * comp-connector2 --/ > > + * > > + * We can't rely on user space that the current connector gets disabled > > + * first before enabling the new connector. Disable all active > > + * connector links to be on the safe side. > > + */ > > + err = tvp5150_disable_all_input_links(decoder); > > + if (err) > > + return err; > > + > > + tvp5150_s_routing(sd, is_svideo ? TVP5150_SVIDEO : tvp5150_pad->index, > > + flags & MEDIA_LNK_FL_ENABLED ? TVP5150_NORMAL : > > + TVP5150_BLACK_SCREEN, 0); > > + > > + if (flags & MEDIA_LNK_FL_ENABLED) { > > + /* > > + * S-Video connector is conneted to both ports AIP1A and AIP1B. > > + * Both links must be enabled in one-shot regardless which link > > + * the user requests. > > + */ This is a very grey area, I don't think the MC API explicitly allows doing this. As changing links during streaming is disallowed, wouldn't it be easier to handle the routing configuration at stream start ? You wouldn't have to deal with this issue then, you could just return an error if only one link is enabled. Furthermore, it would allow supporting a configuration where a composite signal is connected to the Y pin of the mini-DIN connector. > > + if (is_svideo) { > > + err = tvp5150_set_link((struct media_pad *) remote, > > + other_tvp5150_pad, flags); > > + if (err) > > + return err; > > + } > > + } > > + > > + return 0; > > +} > > + > > +static const struct media_entity_operations tvp5150_sd_media_ops = { > > + .link_setup = tvp5150_link_setup, > > +}; > > +#endif > > /**************************************************************************** > > I2C Command > > ****************************************************************************/ > > @@ -1314,6 +1452,65 @@ static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) > > return 0; > > } > > > > +static int tvp5150_registered(struct v4l2_subdev *sd) > > +{ > > +#if defined(CONFIG_MEDIA_CONTROLLER) > > + struct tvp5150 *decoder = to_tvp5150(sd); > > + unsigned int i; > > + int ret; > > + > > + /* > > + * Setup connector pads and links. Enable the link to the first > > + * available connector per default. > > + */ > > + for (i = 0; i < decoder->connectors_num; i++) { > > + struct media_entity *con = &decoder->connectors[i].ent; > > + struct media_pad *pad = &decoder->connectors[i].pad; > > + unsigned int port = decoder->connectors[i].base.remote_port; > > + bool is_svideo = > > + decoder->connectors[i].base.type == V4L2_CON_SVIDEO; > > + int flags = i ? 0 : MEDIA_LNK_FL_ENABLED; The flags passed to media_create_pad_link() are unsigned. > > + > > + pad->flags = MEDIA_PAD_FL_SOURCE; > > + ret = media_entity_pads_init(con, 1, pad); > > + if (ret < 0) > > + return ret; > > + > > + ret = media_device_register_entity(sd->v4l2_dev->mdev, con); > > + if (ret < 0) > > + return ret; > > + > > + ret = media_create_pad_link(con, 0, &sd->entity, port, flags); > > + if (ret < 0) { > > + media_device_unregister_entity(con); > > + return ret; > > + } Will the other registered media entities be unregistered correctly ? > > + > > + if (is_svideo) { > > + /* svideo links to both aip1a and aip1b */ > > + ret = media_create_pad_link(con, 0, &sd->entity, > > + port + 1, flags); Does the TVP5150 support both connecting Y to AIP1A and C to AIP1B, and Y to AIP1B and C to AIP1A ? If so the port + 1 won't always work. > > + if (ret < 0) { > > + media_device_unregister_entity(con); > > + return ret; > > + } > > + } > > + > > + /* enable default input */ > > + if (flags == MEDIA_LNK_FL_ENABLED) { > > + decoder->input = > > + is_svideo ? TVP5150_SVIDEO : > > + port == 0 ? TVP5150_COMPOSITE0 : > > + TVP5150_COMPOSITE1; > > + > > + tvp5150_selmux(sd); > > + } You could move this after the loop and operation on decoder->connectors[0]. Hopefully you could then use if's instead of nested ? : operators, as the above isn't very readable. > > + } > > +#endif > > + return 0; > > +} > > + > > + One blank line is enough. > > /* ----------------------------------------------------------------------- */ > > > > static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = { > > @@ -1367,6 +1564,10 @@ static const struct v4l2_subdev_ops tvp5150_ops = { > > .pad = &tvp5150_pad_ops, > > }; > > > > +static const struct v4l2_subdev_internal_ops tvp5150_internal_ops = { > > + .registered = tvp5150_registered, > > +}; > > + > > /**************************************************************************** > > I2C Client & Driver > > ****************************************************************************/ > > @@ -1515,38 +1716,168 @@ static int tvp5150_init(struct i2c_client *c) > > return 0; > > } > > > > -static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np) > > +#if defined(CONFIG_MEDIA_CONTROLLER) > > +static int tvp5150_add_of_connectors(struct tvp5150 *decoder) > > { > > - struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 }; > > - struct device_node *ep; > > - unsigned int flags; > > - int ret = 0; > > + struct device *dev = decoder->sd.dev; You use dev in a singla location, I think you could use decoder->sd.dev directly. > > + struct tvp5150_connector *connectors; > > + unsigned int connectors_num = decoder->connectors_num; > > + int i, ret; i is never negative, you can make it an unsiged int. > > > > - ep = of_graph_get_next_endpoint(np, NULL); > > - if (!ep) > > - return -EINVAL; > > + /* > > + * Only add of_connectors if device really is a OF device since > > + * the driver is used by usb devices e.g. em28xx and embedded > > + * devices. > > + */ > > + if (!decoder->connectors_num) Maybe if (!connectors_num) ? > > + return 0; > > > > - ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg); > > - if (ret) > > - goto err; > > + /* Allocate and initialize all available input connectors */ > > + connectors = devm_kcalloc(dev, connectors_num, sizeof(*connectors), > > + GFP_KERNEL); > > + if (!connectors) > > + return -ENOMEM; > > + > > + for (i = 0; i < connectors_num; i++) { > > + struct v4l2_fwnode_connector *c = &connectors[i].base; > > + > > + ret = v4l2_fwnode_parse_connector( > > + of_fwnode_handle(decoder->endpoints[i]), c); I think you should handle errors here. > > + > > + connectors[i].ent.flags = MEDIA_ENT_FL_CONNECTOR; > > + connectors[i].ent.function = c->type == V4L2_CON_SVIDEO ? > > + MEDIA_ENT_F_CONN_SVIDEO : MEDIA_ENT_F_CONN_COMPOSITE; > > + connectors[i].ent.name = c->label; I don't think using the label as the entity name is a good idea, as we require entity names to be unique, and labels offer no such guarantee. > > + } > > + > > + decoder->connectors = connectors; > > + > > + return 0; > > +} > > + > > +static int tvp5150_mc_init(struct tvp5150 *decoder) > > +{ > > + struct v4l2_subdev *sd = &decoder->sd; > > + unsigned int i; > > + > > + sd->entity.ops = &tvp5150_sd_media_ops; > > + sd->entity.function = MEDIA_ENT_F_ATV_DECODER; > > + > > + /* Initialize all TVP5150 pads */ > > + for (i = 0; i < TVP5150_NUM_PADS; i++) { > > + if (i < TVP5150_NUM_PADS - 1) { > > + decoder->pads[i].flags = MEDIA_PAD_FL_SINK; > > + decoder->pads[i].sig_type = PAD_SIGNAL_ANALOG; > > + } else { > > + decoder->pads[i].flags = MEDIA_PAD_FL_SOURCE; > > + decoder->pads[i].sig_type = PAD_SIGNAL_DV; > > + } > > + } You can simplify this to for (i = 0; i < TVP5150_NUM_PADS - 1; i++) { decoder->pads[i].flags = MEDIA_PAD_FL_SINK; decoder->pads[i].sig_type = PAD_SIGNAL_ANALOG; } decoder->pads[i].flags = MEDIA_PAD_FL_SOURCE; decoder->pads[i].sig_type = PAD_SIGNAL_DV; > > + > > + return media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS, > > + decoder->pads); > > +} > > + > > +#else /* !defined(CONFIG_MEDIA_CONTROLLER) */ > > + > > +static inline int tvp5150_add_of_connectors(struct tvp5150 *decoder) > > +{ > > + return 0; > > +} > > > > - flags = bus_cfg.bus.parallel.flags; > > +static inline int tvp5150_mc_init(struct tvp5150 *decoder) > > +{ > > + return 0; > > +} > > +#endif /* defined(CONFIG_MEDIA_CONTROLLER) */ > > > > - if (bus_cfg.bus_type == V4L2_MBUS_PARALLEL && > > - !(flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH && > > - flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH && > > - flags & V4L2_MBUS_FIELD_EVEN_LOW)) { > > +static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np) > > +{ > > + struct device *dev = decoder->sd.dev; > > + struct device_node *ep_np; > > + unsigned int i = 0, in = 0; Let's rename in to num_inputs or num_connectors. > > + int ret; > > + bool found = false; > > + > > + /* at least 1 output and 1 input */ > > + decoder->endpoints_num = of_graph_get_endpoint_count(np); > > + if (decoder->endpoints_num < 2 || decoder->endpoints_num > 4) { > > + dev_err(dev, "At least 1 input and 1 output must be connected to the device.\n"); > > ret = -EINVAL; > > goto err; > > } > > > > - decoder->mbus_type = bus_cfg.bus_type; > > + for_each_endpoint_of_node(np, ep_np) { > > + struct v4l2_fwnode_endpoint bus_cfg = { > > + .bus_type = V4L2_MBUS_UNKNOWN > > + }; > > + struct v4l2_fwnode_connector c; > > + struct of_endpoint ep; > > + unsigned int flags; > > + > > + of_graph_parse_endpoint(ep_np, &ep); > > + switch (ep.port) { > > + case TVP5150_PAD_AIP1A: > > + /* fall through */ I don't think you need this comment. > > + case TVP5150_PAD_AIP1B: > > + ret = v4l2_fwnode_parse_connector( > > + of_fwnode_handle(ep_np), &c); You use of_fwnode_handle(ep_np) twice, you could move it outside of the switch () to keep lines shorter. > > + if (c.type != V4L2_CON_COMPOSITE && > > + c.type != V4L2_CON_SVIDEO) { > > + dev_err(dev, > > + "Invalid endpoint %d on port %d\n", The correct format specifier for unsigned int is %u. Should the error message be more explicit ? "Invalid connector type for port@%u/endpoint@%u" ? > > + c.remote_id, c.remote_port); > > + ret = -EINVAL; > > + goto err; If you break out of the loop you need an of_node_put(ep_np). Alternatively, you could store ep_np in the endpoints array right before of_graph_parse_endpoint() and call of_node_put() right after of_graph_parse_endpoint(). > > + } > > + in++; > > + break; > > + case TVP5150_PAD_VID_OUT: > > + ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_np), > > + &bus_cfg); > > + if (ret) > > + goto err; > > + > > + flags = bus_cfg.bus.parallel.flags; > > + > > + if (bus_cfg.bus_type == V4L2_MBUS_PARALLEL && > > + !(flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH && > > + flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH && > > + flags & V4L2_MBUS_FIELD_EVEN_LOW)) { > > + ret = -EINVAL; > > + goto err; > > + } > > + > > + decoder->mbus_type = bus_cfg.bus_type; > > + break; > > + default: > > + dev_err(dev, "Invalid port %d for endpoint %pOF\n", %u here too. > > + ep.port, ep.local_node); > > + ret = -EINVAL; > > + goto err; > > + } > > + > > + of_node_get(ep_np); > > + decoder->endpoints[i] = ep_np; > > + i++; > > + > > + found = true; > > + } > > > > + decoder->connectors_num = in; > > + return found ? 0 : -ENODEV; > > err: > > - of_node_put(ep); > > return ret; You can remove the err label and return ret directly. > > } > > > > +static void tvp5150_dt_cleanup(struct tvp5150 *decoder) > > +{ > > + unsigned int i; > > + > > + for (i = 0; i < TVP5150_NUM_PADS; i++) > > + of_node_put(decoder->endpoints[i]); > > +} > > + > > static const char * const tvp5150_test_patterns[2] = { > > "Disabled", > > "Black screen" > > @@ -1585,7 +1916,7 @@ static int tvp5150_probe(struct i2c_client *c, > > res = tvp5150_parse_dt(core, np); > > if (res) { > > dev_err(sd->dev, "DT parsing error: %d\n", res); > > - return res; > > + goto err_cleanup_dt; > > } > > } else { > > /* Default to BT.656 embedded sync */ > > @@ -1593,25 +1924,20 @@ static int tvp5150_probe(struct i2c_client *c, > > } > > > > v4l2_i2c_subdev_init(sd, c, &tvp5150_ops); > > + sd->internal_ops = &tvp5150_internal_ops; > > sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; > > > > -#if defined(CONFIG_MEDIA_CONTROLLER) > > - core->pads[TVP5150_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK; > > - core->pads[TVP5150_PAD_IF_INPUT].sig_type = PAD_SIGNAL_ANALOG; > > - core->pads[TVP5150_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; > > - core->pads[TVP5150_PAD_VID_OUT].sig_type = PAD_SIGNAL_DV; > > - > > - sd->entity.function = MEDIA_ENT_F_ATV_DECODER; > > - > > - res = media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS, core->pads); > > - if (res < 0) > > - return res; > > + res = tvp5150_mc_init(core); > > + if (res) > > + goto err_cleanup_dt; > > > > -#endif > > + res = tvp5150_add_of_connectors(core); > > + if (res) > > + goto err_cleanup_dt; > > > > res = tvp5150_detect_version(core); > > if (res < 0) > > - return res; > > + goto err_cleanup_dt; > > > > core->norm = V4L2_STD_ALL; /* Default is autodetect */ > > core->detected_norm = V4L2_STD_UNKNOWN; > > @@ -1637,7 +1963,7 @@ static int tvp5150_probe(struct i2c_client *c, > > sd->ctrl_handler = &core->hdl; > > if (core->hdl.error) { > > res = core->hdl.error; > > - goto err; > > + goto err_free_v4l2_ctrls; > > } > > > > tvp5150_set_default(tvp5150_read_std(sd), &core->rect); > > @@ -1649,19 +1975,24 @@ static int tvp5150_probe(struct i2c_client *c, > > tvp5150_isr, IRQF_TRIGGER_HIGH | > > IRQF_ONESHOT, "tvp5150", core); > > if (res) > > - goto err; > > + goto err_free_v4l2_ctrls; > > } > > > > res = v4l2_async_register_subdev(sd); > > if (res < 0) > > - goto err; > > + goto err_free_v4l2_ctrls; > > > > if (debug > 1) > > tvp5150_log_status(sd); > > + > > return 0; > > > > -err: > > +err_free_v4l2_ctrls: > > v4l2_ctrl_handler_free(&core->hdl); > > +err_cleanup_dt: > > + if (IS_ENABLED(CONFIG_OF) && np) > > + tvp5150_dt_cleanup(core); > > + > > return res; > > } > > -- Regards, Laurent Pinchart