From patchwork Fri Apr 14 11:27:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Verkuil X-Patchwork-Id: 674362 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB5BBC77B72 for ; Fri, 14 Apr 2023 11:27:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229762AbjDNL1t (ORCPT ); Fri, 14 Apr 2023 07:27:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229542AbjDNL1s (ORCPT ); Fri, 14 Apr 2023 07:27:48 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC6A71FDA for ; Fri, 14 Apr 2023 04:27:46 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 77C75646E1 for ; Fri, 14 Apr 2023 11:27:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54405C433EF; Fri, 14 Apr 2023 11:27:45 +0000 (UTC) From: Hans Verkuil To: linux-media@vger.kernel.org Cc: Hans Verkuil Subject: [PATCHv3 01/18] media: common: saa7146: disable clipping Date: Fri, 14 Apr 2023 13:27:25 +0200 Message-Id: <20230414112742.27749-2-hverkuil-cisco@xs4all.nl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230414112742.27749-1-hverkuil-cisco@xs4all.nl> References: <20230414112742.27749-1-hverkuil-cisco@xs4all.nl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The patch removing overlay support also removed the old saa7146_disable_clipping() function, but that is needed in order to capture video. Without this the Hexium cards won't show any video. Signed-off-by: Hans Verkuil Fixes: 7777694f8066 ("media: saa7146: drop overlay support") --- drivers/media/common/saa7146/saa7146_hlp.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/media/common/saa7146/saa7146_hlp.c b/drivers/media/common/saa7146/saa7146_hlp.c index 6792a96d0ba3..cb8fc326c0a7 100644 --- a/drivers/media/common/saa7146/saa7146_hlp.c +++ b/drivers/media/common/saa7146/saa7146_hlp.c @@ -699,6 +699,22 @@ static void program_capture_engine(struct saa7146_dev *dev, int planar) WRITE_RPS0(CMD_STOP); } +/* disable clipping */ +static void saa7146_disable_clipping(struct saa7146_dev *dev) +{ + u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); + + /* mask out relevant bits (=lower word)*/ + clip_format &= MASK_W1; + + /* upload clipping-registers*/ + saa7146_write(dev, CLIP_FORMAT_CTRL, clip_format); + saa7146_write(dev, MC2, (MASK_05 | MASK_21)); + + /* disable video dma2 */ + saa7146_write(dev, MC1, MASK_21); +} + void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) { struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); @@ -716,6 +732,7 @@ void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struc saa7146_set_window(dev, buf->fmt->width, buf->fmt->height, buf->fmt->field); saa7146_set_output_format(dev, sfmt->trans); + saa7146_disable_clipping(dev); if ( vv->last_field == V4L2_FIELD_INTERLACED ) { } else if ( vv->last_field == V4L2_FIELD_TOP ) {