From patchwork Thu Jun 28 16:20:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 10494437 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8548460230 for ; Thu, 28 Jun 2018 16:22:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 27F8E2A63F for ; Thu, 28 Jun 2018 16:22:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1C5E32A661; Thu, 28 Jun 2018 16:22:25 +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 B52A42A63F for ; Thu, 28 Jun 2018 16:22:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967353AbeF1QWT (ORCPT ); Thu, 28 Jun 2018 12:22:19 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:42043 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967346AbeF1QWQ (ORCPT ); Thu, 28 Jun 2018 12:22:16 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fYZfV-0004p8-Dp; Thu, 28 Jun 2018 18:21:13 +0200 Received: from mfe by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fYZfQ-0007Fb-M1; Thu, 28 Jun 2018 18:21:08 +0200 From: Marco Felsch To: mchehab@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com Cc: p.zabel@pengutronix.de, afshin.nasser@gmail.com, javierm@redhat.com, sakari.ailus@linux.intel.com, laurent.pinchart@ideasonboard.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 09/22] [media] tvp5150: fix standard autodetection Date: Thu, 28 Jun 2018 18:20:41 +0200 Message-Id: <20180628162054.25613-10-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180628162054.25613-1-m.felsch@pengutronix.de> References: <20180628162054.25613-1-m.felsch@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 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 From: Philipp Zabel Make sure to not overwrite decoder->norm when setting the standard in hardware, but only when instructed by V4L2 API calls. Signed-off-by: Philipp Zabel Signed-off-by: Marco Felsch --- drivers/media/i2c/tvp5150.c | 56 ++++++++++++++++++++----------------- 1 file changed, 31 insertions(+), 25 deletions(-) diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index dbfc56c87434..895bc2bfb1d1 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -731,8 +731,6 @@ static int tvp5150_set_std(struct v4l2_subdev *sd, v4l2_std_id std) struct tvp5150 *decoder = to_tvp5150(sd); int fmt = 0; - decoder->norm = std; - /* First tests should be against specific std */ if (std == V4L2_STD_NTSC_443) { @@ -769,13 +767,37 @@ static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std) else decoder->rect.height = TVP5150_V_MAX_OTHERS; + decoder->norm = std; return tvp5150_set_std(sd, std); } +static v4l2_std_id tvp5150_read_std(struct v4l2_subdev *sd) +{ + int val = tvp5150_read(sd, TVP5150_STATUS_REG_5); + + switch (val & 0x0F) { + case 0x01: + return V4L2_STD_NTSC; + case 0x03: + return V4L2_STD_PAL; + case 0x05: + return V4L2_STD_PAL_M; + case 0x07: + return V4L2_STD_PAL_N | V4L2_STD_PAL_Nc; + case 0x09: + return V4L2_STD_NTSC_443; + case 0xb: + return V4L2_STD_SECAM; + default: + return V4L2_STD_UNKNOWN; + } +} + static int tvp5150_reset(struct v4l2_subdev *sd, u32 val) { struct tvp5150 *decoder = to_tvp5150(sd); + v4l2_std_id std; /* Initializes TVP5150 to its default values */ tvp5150_write_inittab(sd, tvp5150_init_default); @@ -792,7 +814,13 @@ static int tvp5150_reset(struct v4l2_subdev *sd, u32 val) /* Initialize image preferences */ v4l2_ctrl_handler_setup(&decoder->hdl); - tvp5150_set_std(sd, decoder->norm); + if (decoder->norm == V4L2_STD_ALL) + std = tvp5150_read_std(sd); + else + std = decoder->norm; + + /* Disable autoswitch mode */ + tvp5150_set_std(sd, std); if (decoder->mbus_type == V4L2_MBUS_PARALLEL) /* 8-bit 4:2:2 YUV with discrete sync output */ @@ -829,28 +857,6 @@ static int tvp5150_s_ctrl(struct v4l2_ctrl *ctrl) return -EINVAL; } -static v4l2_std_id tvp5150_read_std(struct v4l2_subdev *sd) -{ - int val = tvp5150_read(sd, TVP5150_STATUS_REG_5); - - switch (val & 0x0F) { - case 0x01: - return V4L2_STD_NTSC; - case 0x03: - return V4L2_STD_PAL; - case 0x05: - return V4L2_STD_PAL_M; - case 0x07: - return V4L2_STD_PAL_N | V4L2_STD_PAL_Nc; - case 0x09: - return V4L2_STD_NTSC_443; - case 0xb: - return V4L2_STD_SECAM; - default: - return V4L2_STD_UNKNOWN; - } -} - static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop) { /* Default is no cropping */