From patchwork Wed Nov 4 10:36:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 11880255 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8600D14B4 for ; Wed, 4 Nov 2020 10:38:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6DC5E223BD for ; Wed, 4 Nov 2020 10:38:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729672AbgKDKh6 (ORCPT ); Wed, 4 Nov 2020 05:37:58 -0500 Received: from relay11.mail.gandi.net ([217.70.178.231]:44305 "EHLO relay11.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729655AbgKDKh6 (ORCPT ); Wed, 4 Nov 2020 05:37:58 -0500 Received: from uno.lan (93-34-118-233.ip49.fastwebnet.it [93.34.118.233]) (Authenticated sender: jacopo@jmondi.org) by relay11.mail.gandi.net (Postfix) with ESMTPSA id ABA3910000D; Wed, 4 Nov 2020 10:37:53 +0000 (UTC) From: Jacopo Mondi To: linux-media@vger.kernel.org Cc: Jacopo Mondi , mchehab@kernel.org, sakari.ailus@linux.intel.com, hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, roman.kovalivskyi@globallogic.com, dafna.hirschfeld@collabora.com, dave.stevenson@raspberrypi.org, naush@raspberrypi.com, erosca@de.adit-jv.com, Dave Stevenson Subject: [PATCH v2 25/30] media: ov5647: Advertise the correct exposure range Date: Wed, 4 Nov 2020 11:36:17 +0100 Message-Id: <20201104103622.595908-26-jacopo@jmondi.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201104103622.595908-1-jacopo@jmondi.org> References: <20201104103622.595908-1-jacopo@jmondi.org> MIME-Version: 1.0 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 | 39 +++++++++++++++++++++++++++++++++----- 1 file changed, 34 insertions(+), 5 deletions(-) diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c index f3962071f8a97..f0c14a473f21c 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) @@ -1105,9 +1111,9 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt = &format->format; const struct ov5647_mode *ov5647_mode_list; struct ov5647 *sensor = to_sensor(sd); + int hblank, exposure_max, exposure_def; const struct ov5647_mode *mode; unsigned int num_modes; - int hblank; /* * Default mbus code MEDIA_BUS_FMT_SBGGR10_1X10 if the requested one @@ -1149,6 +1155,13 @@ 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); @@ -1331,6 +1344,18 @@ 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 @@ -1376,7 +1401,7 @@ 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); @@ -1390,9 +1415,13 @@ 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,