From patchwork Wed Oct 5 19:06:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 12999580 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 5EEEAC433F5 for ; Wed, 5 Oct 2022 19:07:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231410AbiJETHB (ORCPT ); Wed, 5 Oct 2022 15:07:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231371AbiJETG5 (ORCPT ); Wed, 5 Oct 2022 15:06:57 -0400 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76FA67FE69 for ; Wed, 5 Oct 2022 12:06:56 -0700 (PDT) Received: (Authenticated sender: jacopo@jmondi.org) by mail.gandi.net (Postfix) with ESMTPSA id 84587FF808; Wed, 5 Oct 2022 19:06:51 +0000 (UTC) From: Jacopo Mondi To: =?utf-8?q?Krzysztof_Ha=C5=82asa?= , Mauro Carvalho Chehab , Sakari Ailus , Laurent Pinchart Cc: Jacopo Mondi , linux-media@vger.kernel.org Subject: [PATCH 07/10] media: ar0521: Adjust exposure and blankings limits Date: Wed, 5 Oct 2022 21:06:10 +0200 Message-Id: <20221005190613.394277-8-jacopo@jmondi.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221005190613.394277-1-jacopo@jmondi.org> References: <20221005190613.394277-1-jacopo@jmondi.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Adjust the control limits for V4L2_CID_VBLANK, V4L2_CID_HBLANK and V4L2_CID_EXPOSURE when a new format is applied to the sensor. Also update the exposure control when a new blanking value is applied. Also change the controls initialization to use valid values for the default format. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/ar0521.c | 77 ++++++++++++++++++++++++++++---------- 1 file changed, 57 insertions(+), 20 deletions(-) diff --git a/drivers/media/i2c/ar0521.c b/drivers/media/i2c/ar0521.c index b1580c99f5e3..26bb1b8f7453 100644 --- a/drivers/media/i2c/ar0521.c +++ b/drivers/media/i2c/ar0521.c @@ -42,7 +42,8 @@ #define AR0521_WIDTH_BLANKING_MIN 572u #define AR0521_HEIGHT_BLANKING_MIN 38u /* must be even */ -#define AR0521_TOTAL_WIDTH_MIN 2968u +#define AR0521_TOTAL_HEIGHT_MAX 2464u /* max value of y_addr_end reg */ +#define AR0521_TOTAL_WIDTH_MAX 3280u /* max value of x_addr_end reg */ #define AR0521_ANA_GAIN_MIN 0x00 #define AR0521_ANA_GAIN_MAX 0x3f @@ -131,8 +132,6 @@ struct ar0521_dev { struct v4l2_mbus_framefmt fmt; struct ar0521_ctrls ctrls; unsigned int lane_count; - u16 total_width; - u16 total_height; struct { u16 pre; u16 mult; @@ -544,7 +543,8 @@ static int ar0521_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_format *format) { struct ar0521_dev *sensor = to_ar0521_dev(sd); - int ret = 0; + int exposure_max, exposure_val; + int max_vblank, max_hblank; ar0521_adj_fmt(&format->format); @@ -555,13 +555,44 @@ static int ar0521_set_fmt(struct v4l2_subdev *sd, fmt = v4l2_subdev_get_try_format(sd, sd_state, 0 /* pad */); *fmt = format->format; - } else { - sensor->fmt = format->format; - ar0521_calc_mode(sensor); + + mutex_unlock(&sensor->lock); + + return 0; } + sensor->fmt = format->format; + ar0521_calc_mode(sensor); + + /* + * Update the exposure and blankings limits. Blankings are also reset + * to the minimum. + */ + max_hblank = AR0521_TOTAL_WIDTH_MAX - sensor->fmt.width; + __v4l2_ctrl_modify_range(sensor->ctrls.hblank, + sensor->ctrls.hblank->minimum, + max_hblank, sensor->ctrls.hblank->step, + sensor->ctrls.hblank->minimum); + __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, sensor->ctrls.hblank->minimum); + + max_vblank = AR0521_TOTAL_HEIGHT_MAX - sensor->fmt.height; + __v4l2_ctrl_modify_range(sensor->ctrls.vblank, + sensor->ctrls.vblank->minimum, + max_vblank, sensor->ctrls.vblank->step, + sensor->ctrls.vblank->minimum); + __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, sensor->ctrls.vblank->minimum); + + exposure_max = sensor->fmt.height + AR0521_HEIGHT_BLANKING_MIN - 4; + exposure_val = min(sensor->ctrls.exposure->val, exposure_max); + __v4l2_ctrl_modify_range(sensor->ctrls.exposure, + sensor->ctrls.exposure->minimum, + exposure_max, sensor->ctrls.exposure->step, + exposure_val); + __v4l2_ctrl_s_ctrl(sensor->ctrls.exposure, exposure_val); + mutex_unlock(&sensor->lock); - return ret; + + return 0; } static int ar0521_s_ctrl(struct v4l2_ctrl *ctrl) @@ -573,15 +604,13 @@ static int ar0521_s_ctrl(struct v4l2_ctrl *ctrl) /* v4l2_ctrl_lock() locks our own mutex */ switch (ctrl->id) { - case V4L2_CID_HBLANK: case V4L2_CID_VBLANK: - sensor->total_width = sensor->fmt.width + - sensor->ctrls.hblank->val; - sensor->total_height = sensor->fmt.width + - sensor->ctrls.vblank->val; - break; - default: - ret = -EINVAL; + int exp_max = sensor->fmt.height + ctrl->val - 4; + int exp_val = min(sensor->ctrls.exposure->val, exp_max); + __v4l2_ctrl_modify_range(sensor->ctrls.exposure, + sensor->ctrls.exposure->minimum, + exp_max, sensor->ctrls.exposure->step, + exp_val); break; } @@ -633,6 +662,7 @@ static int ar0521_init_controls(struct ar0521_dev *sensor) const struct v4l2_ctrl_ops *ops = &ar0521_ctrl_ops; struct ar0521_ctrls *ctrls = &sensor->ctrls; struct v4l2_ctrl_handler *hdl = &ctrls->handler; + int max_vblank, max_hblank, exposure_max; int ret; v4l2_ctrl_handler_init(hdl, 32); @@ -655,11 +685,17 @@ static int ar0521_init_controls(struct ar0521_dev *sensor) -512, 511, 1, 0); v4l2_ctrl_cluster(3, &ctrls->gain); + /* Initialize blanking limits using the default 2592x1944 format. */ + max_hblank = AR0521_TOTAL_WIDTH_MAX - AR0521_WIDTH_MAX; ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, - AR0521_WIDTH_BLANKING_MIN, 4094, 1, + AR0521_WIDTH_BLANKING_MIN, + max_hblank, 1, AR0521_WIDTH_BLANKING_MIN); + + max_vblank = AR0521_TOTAL_HEIGHT_MAX - AR0521_HEIGHT_MAX; ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK, - AR0521_HEIGHT_BLANKING_MIN, 4094, 2, + AR0521_HEIGHT_BLANKING_MIN, + max_vblank, 2, AR0521_HEIGHT_BLANKING_MIN); v4l2_ctrl_cluster(2, &ctrls->hblank); @@ -669,9 +705,10 @@ static int ar0521_init_controls(struct ar0521_dev *sensor) AR0521_PIXEL_CLOCK_MAX, 1, AR0521_PIXEL_CLOCK_RATE); - /* Manual exposure time */ + /* Manual exposure time: max exposure time = visible + blank - 4 */ + exposure_max = AR0521_HEIGHT_MAX + AR0521_HEIGHT_BLANKING_MIN - 4; ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, 0, - 65535, 1, 360); + exposure_max, 1, 360); ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ, ARRAY_SIZE(ar0521_link_frequencies) - 1,