From patchwork Wed Jun 7 16:47:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 92405 X-Patchwork-Delegate: sakari.ailus@iki.fi Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1q6wLA-00Gsfe-Hb; Wed, 07 Jun 2023 16:48:56 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230520AbjFGQsx (ORCPT + 1 other); Wed, 7 Jun 2023 12:48:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35472 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230498AbjFGQsu (ORCPT ); Wed, 7 Jun 2023 12:48:50 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36CA21FF1 for ; Wed, 7 Jun 2023 09:48:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686156483; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WSo8JZnTuWmwPfUreQxvE7qG0jdP5V/aSUc8BdbGm/E=; b=OokW7aiba7cVRrZ0zU5gY1BlzXbWss1NDGJI6zplOHbpjolSRzRp8i9q381Xj1hfSGjlFh UFYWzSNIbrGt/pz3b9Qae+dFPryK9nsZgozLXcJEUFU8S1CI1R60BkqUw77XfqlofjPiaQ MGYmEJNWpN9/zTnogD2MO0atI1vrfdc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-29-sXa1cRJLPO6HiV3Hq638Ow-1; Wed, 07 Jun 2023 12:47:58 -0400 X-MC-Unique: sXa1cRJLPO6HiV3Hq638Ow-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 61B03185A792; Wed, 7 Jun 2023 16:47:58 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.192.22]) by smtp.corp.redhat.com (Postfix) with ESMTP id 48B32C1603B; Wed, 7 Jun 2023 16:47:57 +0000 (UTC) From: Hans de Goede To: Daniel Scally , Laurent Pinchart , Sakari Ailus , Andy Shevchenko Cc: Hans de Goede , Mauro Carvalho Chehab , Kate Hsuan , linux-media@vger.kernel.org Subject: [PATCH 24/28] media: ov2680: Fix exposure and gain ctrls range and default value Date: Wed, 7 Jun 2023 18:47:08 +0200 Message-Id: <20230607164712.63579-25-hdegoede@redhat.com> In-Reply-To: <20230607164712.63579-1-hdegoede@redhat.com> References: <20230607164712.63579-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.5 (--) X-LSpam-Report: No, score=-2.5 required=5.0 tests=BAYES_00=-1.9,DKIMWL_WL_HIGH=0.001,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no The exposure control's max effective value is VTS - 8, set the control range to match this. Thas means that if/when a future commit makes VTS configurable as a control itself the exposure range needs to be updated dynamically to match the VTS value. The gain control goes from 0 - 1023, higher values wrap around to the lowest gain setting. Also stop setting 0 as default for both controls this leads to a totally black picture which is no good. This is esp. important for tests of the sensor driver without (userspace driven) auto exposure / gain. Signed-off-by: Hans de Goede --- drivers/media/i2c/ov2680.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c index 4705a901c513..d1fd47f10a17 100644 --- a/drivers/media/i2c/ov2680.c +++ b/drivers/media/i2c/ov2680.c @@ -80,6 +80,9 @@ /* If possible send 16 extra rows / lines to the ISP as padding */ #define OV2680_END_MARGIN 16 +/* Max exposure time is VTS - 8 */ +#define OV2680_INTEGRATION_TIME_MARGIN 8 + #define OV2680_DEFAULT_WIDTH 800 #define OV2680_DEFAULT_HEIGHT 600 @@ -784,6 +787,7 @@ static int ov2680_v4l2_register(struct ov2680_dev *sensor, struct i2c_client *cl const struct v4l2_ctrl_ops *ops = &ov2680_ctrl_ops; struct ov2680_ctrls *ctrls = &sensor->ctrls; struct v4l2_ctrl_handler *hdl = &ctrls->handler; + int exp_max = OV2680_LINES_PER_FRAME - OV2680_INTEGRATION_TIME_MARGIN; int ret = 0; v4l2_i2c_subdev_init(&sensor->sd, client, &ov2680_subdev_ops); @@ -810,9 +814,9 @@ static int ov2680_v4l2_register(struct ov2680_dev *sensor, struct i2c_client *cl 0, 0, test_pattern_menu); ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, - 0, 32767, 1, 0); + 0, exp_max, 1, exp_max); - ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 2047, 1, 0); + ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 1023, 1, 250); if (hdl->error) { ret = hdl->error;