From patchwork Thu Mar 12 10:31:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 11433823 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1698C90 for ; Thu, 12 Mar 2020 10:32:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F111A20739 for ; Thu, 12 Mar 2020 10:32:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726960AbgCLKc2 (ORCPT ); Thu, 12 Mar 2020 06:32:28 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:45687 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726921AbgCLKc2 (ORCPT ); Thu, 12 Mar 2020 06:32:28 -0400 Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28] helo=dude02.lab.pengutronix.de) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jCL8X-0002y6-Kb; Thu, 12 Mar 2020 11:32:21 +0100 Received: from mfe by dude02.lab.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1jCL8R-0001Kn-QZ; Thu, 12 Mar 2020 11:32:15 +0100 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com, hans.verkuil@cisco.com, jacopo+renesas@jmondi.org, robh+dt@kernel.org, laurent.pinchart@ideasonboard.com Cc: devicetree@vger.kernel.org, kernel@pengutronix.de, linux-media@vger.kernel.org Subject: [PATCH v13 20/21] media: tvp5150: add support to limit sdtv standards Date: Thu, 12 Mar 2020 11:31:55 +0100 Message-Id: <20200312103156.3178-21-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200312103156.3178-1-m.felsch@pengutronix.de> References: <20200312103156.3178-1-m.felsch@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::28 X-SA-Exim-Mail-From: mfe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The tvp5150 accepts NTSC(M,J,4.43), PAL (B,D,G,H,I,M,N) and SECAM video data and is able to auto-detect the input signal. The auto-detection does not work if the connector does not receive an input signal and the tvp5150 might not be configured correctly. This misconfiguration leads into wrong decoded video streams if the tvp5150 gets powered on before the video signal is present. Limit the supported sdtv standards according to the actual selected connector to avoid a misconfiguration. Signed-off-by: Marco Felsch --- [1] https://patchwork.kernel.org/cover/10794703/ v12: - use unique v4l2c naming - move tv-norm check to new tvp5150_validate_connectors() v11: - address 80 character warnings by: - use struct v4l2_fwnode_connector *v4lc - add truct v4l2_fwnode_connector_analog *v4lca v8: - adapt commit message - fix rebasing issue - apdapt to new v4l2_fwnode_connector_analog naming - fix cur_connector update during tvp5150_link_setup() -> Only update if we have of-connectors. - fix supported_stds detection during tvp5150_s_std() -> use connectors_num to detect of-connectors presence v5: - probe() initialize supported tv-norms according the given connectors if they are available. - check if media-controller is used. Don't limit the norm if it isn't used. - add more logic to be smarter during connector changing so it is intuitiver for the user space. v2-v4: - nothing since the patch was squashed from series [1] into this series. --- drivers/media/i2c/tvp5150.c | 76 ++++++++++++++++++++++++++++++++++++- 1 file changed, 74 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index f28739d5830c..edf0c695bbee 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -34,6 +34,13 @@ #define TVP5150_MBUS_FMT MEDIA_BUS_FMT_UYVY8_2X8 #define TVP5150_FIELD V4L2_FIELD_ALTERNATE #define TVP5150_COLORSPACE V4L2_COLORSPACE_SMPTE170M +#define TVP5150_STD_MASK (V4L2_STD_NTSC | \ + V4L2_STD_NTSC_443 | \ + V4L2_STD_PAL | \ + V4L2_STD_PAL_M | \ + V4L2_STD_PAL_N | \ + V4L2_STD_PAL_Nc | \ + V4L2_STD_SECAM) #define TVP5150_MAX_CONNECTORS 3 /* Check dt-bindings for more information */ @@ -66,6 +73,7 @@ struct tvp5150 { struct media_pad pads[TVP5150_NUM_PADS]; struct tvp5150_connector connectors[TVP5150_MAX_CONNECTORS]; + struct tvp5150_connector *cur_connector; unsigned int connectors_num; struct v4l2_ctrl_handler hdl; @@ -785,17 +793,33 @@ static int tvp5150_g_std(struct v4l2_subdev *sd, v4l2_std_id *std) static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std) { struct tvp5150 *decoder = to_tvp5150(sd); + struct tvp5150_connector *cur_con = decoder->cur_connector; + v4l2_std_id supported_stds; if (decoder->norm == std) return 0; + /* In case of no of-connectors are available no limitations are made */ + if (!decoder->connectors_num) + supported_stds = V4L2_STD_ALL; + else + supported_stds = cur_con->base.connector.analog.sdtv_stds; + + /* + * Check if requested std or group of std's is/are supported by the + * connector. + */ + if ((supported_stds & std) == 0) + return -EINVAL; + /* Change cropping height limits */ if (std & V4L2_STD_525_60) decoder->rect.height = TVP5150_V_MAX_525_60; else decoder->rect.height = TVP5150_V_MAX_OTHERS; - decoder->norm = std; + /* Set only the specific supported std in case of group of std's. */ + decoder->norm = supported_stds & std; return tvp5150_set_std(sd, std); } @@ -1335,6 +1359,9 @@ static int tvp5150_link_setup(struct media_entity *entity, TVP5150_BLACK_SCREEN, 0); if (flags & MEDIA_LNK_FL_ENABLED) { + struct v4l2_fwnode_connector_analog *v4l2ca; + u32 new_norm; + /* * S-Video connector is conneted to both ports AIP1A and AIP1B. * Both links must be enabled in one-shot regardless which link @@ -1346,6 +1373,28 @@ static int tvp5150_link_setup(struct media_entity *entity, if (err) return err; } + + if (!decoder->connectors_num) + return 0; + + /* Update the current connector */ + decoder->cur_connector = + container_of(remote, struct tvp5150_connector, pad); + + /* + * Do nothing if the new connector supports the same tv-norms as + * the old one. + */ + v4l2ca = &decoder->cur_connector->base.connector.analog; + new_norm = decoder->norm & v4l2ca->sdtv_stds; + if (decoder->norm == new_norm) + return 0; + + /* + * Fallback to the new connector tv-norms if we can't find any + * common between the current tv-norm and the new one. + */ + tvp5150_s_std(sd, new_norm ? new_norm : v4l2ca->sdtv_stds); } return 0; @@ -1604,6 +1653,8 @@ static int tvp5150_registered(struct v4l2_subdev *sd) TVP5150_COMPOSITE1; tvp5150_selmux(sd); + decoder->cur_connector = &decoder->connectors[i]; + tvp5150_s_std(sd, v4l2c->connector.analog.sdtv_stds); } } @@ -1928,6 +1979,12 @@ static int tvp5150_validate_connectors(struct tvp5150 *decoder) return -EINVAL; } } + + if (!(v4l2c->connector.analog.sdtv_stds & TVP5150_STD_MASK)) { + dev_err(dev, "Unsupported tv-norm on connector %s\n", + v4l2c->name); + return -EINVAL; + } } return 0; @@ -2060,6 +2117,7 @@ static int tvp5150_probe(struct i2c_client *c) struct v4l2_subdev *sd; struct device_node *np = c->dev.of_node; struct regmap *map; + unsigned int i; int res; /* Check if the adapter supports the needed features */ @@ -2104,7 +2162,21 @@ static int tvp5150_probe(struct i2c_client *c) if (res < 0) return res; - core->norm = V4L2_STD_ALL; /* Default is autodetect */ + /* + * Iterate over all available connectors in case they are supported and + * successfully parsed. Fallback to default autodetect in case they + * aren't supported. + */ + for (i = 0; i < core->connectors_num; i++) { + struct v4l2_fwnode_connector *v4l2c; + + v4l2c = &core->connectors[i].base; + core->norm |= v4l2c->connector.analog.sdtv_stds; + } + + if (!core->connectors_num) + core->norm = V4L2_STD_ALL; + core->detected_norm = V4L2_STD_UNKNOWN; core->input = TVP5150_COMPOSITE1; core->enable = true;