From patchwork Mon Apr 15 12:44:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 10900743 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 73DF7139A for ; Mon, 15 Apr 2019 12:44:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5B75A28867 for ; Mon, 15 Apr 2019 12:44:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4F692288CB; Mon, 15 Apr 2019 12:44:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C14A9288A0 for ; Mon, 15 Apr 2019 12:44:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727560AbfDOMog (ORCPT ); Mon, 15 Apr 2019 08:44:36 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:37025 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727507AbfDOMog (ORCPT ); Mon, 15 Apr 2019 08:44:36 -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 (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hG0yM-0000RW-Kb; Mon, 15 Apr 2019 14:44:30 +0200 Received: from mfe by dude02.lab.pengutronix.de with local (Exim 4.89) (envelope-from ) id 1hG0yH-00025k-3r; Mon, 15 Apr 2019 14:44:25 +0200 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com, hans.verkuil@cisco.com, jacopo+renesas@jmondi.org, robh+dt@kernel.org Cc: laurent.pinchart@ideasonboard.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH v6 12/13] media: tvp5150: add support to limit tv norms on connector Date: Mon, 15 Apr 2019 14:44:12 +0200 Message-Id: <20190415124413.18456-13-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190415124413.18456-1-m.felsch@pengutronix.de> References: <20190415124413.18456-1-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 X-Virus-Scanned: ClamAV using ClamSMTP 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 tv norms according to the actual selected connector to avoid a misconfiguration. Signed-off-by: Marco Felsch --- [1] https://patchwork.kernel.org/cover/10794703/ 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 | 69 +++++++++++++++++++++++++++++++++++-- 1 file changed, 67 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index cd54715eb641..c0ee08546643 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -32,6 +32,13 @@ #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) MODULE_DESCRIPTION("Texas Instruments TVP5150A/TVP5150AM1/TVP5151 video decoder driver"); MODULE_AUTHOR("Mauro Carvalho Chehab"); @@ -66,6 +73,7 @@ struct tvp5150 { /* media-ctl properties */ struct media_pad pads[TVP5150_NUM_PADS]; struct tvp5150_connector *connectors; + struct tvp5150_connector *cur_connector; int connectors_num; struct v4l2_ctrl_handler hdl; @@ -785,17 +793,28 @@ 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_norms = cur_con ? + cur_con->base.connector.analog.supported_tvnorms : V4L2_STD_ALL; if (decoder->norm == std) return 0; + /* + * check if requested std or group of std's is/are supported by the + * connector + */ + if ((supported_norms & 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_norms & std; return tvp5150_set_std(sd, std); } @@ -1347,6 +1366,8 @@ static int tvp5150_link_setup(struct media_entity *entity, TVP5150_BLACK_SCREEN, 0); if (flags & MEDIA_LNK_FL_ENABLED) { + 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 @@ -1358,6 +1379,26 @@ static int tvp5150_link_setup(struct media_entity *entity, if (err) return err; } + + /* 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. + */ + new_norm = decoder->norm & + decoder->cur_connector->base.connector.analog.supported_tvnorms; + 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 : + decoder->cur_connector->base.connector.analog.supported_tvnorms); } return 0; @@ -1576,6 +1617,9 @@ static int tvp5150_registered(struct v4l2_subdev *sd) TVP5150_COMPOSITE1; tvp5150_selmux(sd); + decoder->cur_connector = &decoder->connectors[i]; + tvp5150_s_std(sd, + decoder->connectors[i].base.connector.analog.supported_tvnorms); } } #endif @@ -1903,6 +1947,11 @@ static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np) ret = -EINVAL; goto err; } + if (!(c.connector.analog.supported_tvnorms & + TVP5150_STD_MASK)) + dev_warn(dev, + "Unsupported tv-norm on connector %s.\n", + c.label); in++; break; case TVP5150_PAD_VID_OUT: @@ -2011,7 +2060,23 @@ static int tvp5150_probe(struct i2c_client *c, if (res < 0) goto err_cleanup_dt; - 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. + */ + if (core->connectors) { + struct v4l2_fwnode_connector *con; + int i; + + for (i = 0; i < core->connectors_num; i++) { + con = &core->connectors[i].base; + core->norm |= con->connector.analog.supported_tvnorms; + } + } else { + core->norm = V4L2_STD_ALL; + } + core->detected_norm = V4L2_STD_UNKNOWN; core->input = TVP5150_COMPOSITE1; core->enable = true;