From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57416C433DF for ; Tue, 23 Jun 2020 16:53:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3DEDB2076E for ; Tue, 23 Jun 2020 16:53:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733004AbgFWQxC (ORCPT ); Tue, 23 Jun 2020 12:53:02 -0400 Received: from relay12.mail.gandi.net ([217.70.178.232]:40823 "EHLO relay12.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732510AbgFWQxC (ORCPT ); Tue, 23 Jun 2020 12:53:02 -0400 Received: from uno.lan (93-34-118-233.ip49.fastwebnet.it [93.34.118.233]) (Authenticated sender: jacopo@jmondi.org) by relay12.mail.gandi.net (Postfix) with ESMTPSA id 2C20F200018; Tue, 23 Jun 2020 16:52:56 +0000 (UTC) From: Jacopo Mondi To: mchehab@kernel.org, sakari.ailus@linux.intel.com, hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, roman.kovalivskyi@globallogic.com, dave.stevenson@raspberrypi.org, naush@raspberrypi.com Cc: mrodin@de.adit-jv.com, hugues.fruchet@st.com, mripard@kernel.org, aford173@gmail.com, sudipi@jp.adit-jv.com, andrew_gabbasov@mentor.com, erosca@de.adit-jv.com, linux-media@vger.kernel.org, libcamera-devel@lists.libcamera.org, Dave Stevenson , Jacopo Mondi Subject: [PATCH 25/25] media: ov5647: Advertise the correct exposure range Date: Tue, 23 Jun 2020 18:55:50 +0200 Message-Id: <20200623165550.45835-6-jacopo@jmondi.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200623100815.10674-1-jacopo@jmondi.org> References: <20200623100815.10674-1-jacopo@jmondi.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Dave Stevenson Exposure is clipped by the VTS of the mode, so it needs to be updated when this is changed. Signed-off-by: Dave Stevenson Signed-off-by: Jacopo Mondi --- drivers/media/i2c/ov5647.c | 41 ++++++++++++++++++++++++++++++++------ 1 file changed, 35 insertions(+), 6 deletions(-) diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c index 209218fb073d6..8f62415c07aad 100644 --- a/drivers/media/i2c/ov5647.c +++ b/drivers/media/i2c/ov5647.c @@ -73,6 +73,11 @@ #define OV5647_VBLANK_MIN 4 #define OV5647_VTS_MAX 32767 +#define OV5647_EXPOSURE_MIN 4 +#define OV5647_EXPOSURE_STEP 1 +#define OV5647_EXPOSURE_DEFAULT 1000 +#define OV5647_EXPOSURE_MAX 65535 + struct regval_list { u16 addr; u8 data; @@ -108,6 +113,7 @@ struct ov5647 { struct v4l2_ctrl *pixel_rate; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; + struct v4l2_ctrl *exposure; }; static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd) @@ -1102,10 +1108,10 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, { struct v4l2_mbus_framefmt *fmt = &format->format; struct ov5647 *sensor = to_sensor(sd); + int hblank, exposure_max, exposure_def; struct ov5647_mode *ov5647_mode_list; struct ov5647_mode *mode; unsigned int num_modes; - int hblank; /* * Default mbus code MEDIA_BUS_FMT_SBGGR10_1X10 if the requested one @@ -1147,6 +1153,13 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, 1, mode->vts - mode->format.height); __v4l2_ctrl_s_ctrl(sensor->vblank, mode->vts - mode->format.height); + exposure_max = mode->vts - 4; + exposure_def = exposure_max < OV5647_EXPOSURE_DEFAULT ? exposure_max + : OV5647_EXPOSURE_DEFAULT; + __v4l2_ctrl_modify_range(sensor->exposure, sensor->exposure->minimum, + exposure_max, sensor->exposure->step, + exposure_def); + *fmt = mode->format; mutex_unlock(&sensor->lock); @@ -1329,6 +1342,18 @@ static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl) /* v4l2_ctrl_lock() locks our own mutex */ + if (ctrl->id == V4L2_CID_VBLANK) { + int exposure_max, exposure_def; + + /* Update max exposure while meeting expected vblanking */ + exposure_max = sensor->mode->format.height + ctrl->val - 4; + exposure_def = exposure_max < OV5647_EXPOSURE_DEFAULT + ? exposure_max : OV5647_EXPOSURE_DEFAULT; + __v4l2_ctrl_modify_range(sensor->exposure, sensor->exposure->minimum, + exposure_max, sensor->exposure->step, + exposure_def); + } + /* * If the device is not powered up by the host driver do * not apply any controls to H/W at this time. Instead @@ -1374,9 +1399,9 @@ static const struct v4l2_ctrl_ops ov5647_ctrl_ops = { static int ov5647_init_controls(struct ov5647 *sensor) { struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd); - int hblank; + int hblank, exposure_max, exposure_def; - v4l2_ctrl_handler_init(&sensor->ctrls, 8); + v4l2_ctrl_handler_init(&sensor->ctrls, 9); v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 0); @@ -1388,9 +1413,13 @@ static int ov5647_init_controls(struct ov5647 *sensor) V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_MANUAL); - /* min: 4 lines; max: 0xffff lines; default: 1000 lines. */ - v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, - V4L2_CID_EXPOSURE, 4, 65535, 1, 1000); + exposure_max = sensor->mode->vts - 4; + exposure_def = exposure_max < OV5647_EXPOSURE_DEFAULT ? exposure_max + : OV5647_EXPOSURE_DEFAULT; + sensor->exposure = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, + V4L2_CID_EXPOSURE, OV5647_EXPOSURE_MIN, + exposure_max, OV5647_EXPOSURE_STEP, + exposure_def); /* min: 16 = 1.0x; max (10 bits); default: 32 = 2.0x. */ v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, -- 2.27.0