From patchwork Mon Jan 16 14:44:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 13103338 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 34DC5C46467 for ; Mon, 16 Jan 2023 14:56:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230257AbjAPO40 (ORCPT ); Mon, 16 Jan 2023 09:56:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232700AbjAPO4B (ORCPT ); Mon, 16 Jan 2023 09:56:01 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5751F26861 for ; Mon, 16 Jan 2023 06:45:05 -0800 (PST) Received: from pendragon.ideasonboard.com (213-243-189-158.bb.dnainternet.fi [213.243.189.158]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id D9756E7B; Mon, 16 Jan 2023 15:45:03 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1673880304; bh=QQdUA7xStoSUf8SK+ccuAXrcCLeIQbD8umcat8ntU+M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eTtPXhmKn9hdejPo0XGBUVJ5r3dpF/5K9EXjwLEhnghF+NT51Xl+eAemPVet6QD6o 7EpvIpU4ZmgJhYeImUqwP2bHimzT3DMDR374bEHcjKKKBeHkZN+O4yc1xuGbuMJxPq TXW9fbzXuIwlXM0OsGBjjeBc/RysUOQ6a/q4GbcM= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Sakari Ailus , Manivannan Sadhasivam , Alexander Stein , Dave Stevenson Subject: [PATCH v3 07/17] media: i2c: imx290: Factor out black level setting to a function Date: Mon, 16 Jan 2023 16:44:44 +0200 Message-Id: <20230116144454.1012-8-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.38.2 In-Reply-To: <20230116144454.1012-1-laurent.pinchart@ideasonboard.com> References: <20230116144454.1012-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The black level programmed in the BLKLEVEL register depends on the output format. The black level value computation is currently performed in imx290_set_ctrl(), in addition to having different black level values in the output-specific register value tables. Move it to a separate function to simplify the imx290_set_ctrl() code. Signed-off-by: Laurent Pinchart Reviewed-by: Alexander Stein Reviewed-by: Dave Stevenson --- Changes since v1: - Drop bpp variable in imx290_write_current_format() --- drivers/media/i2c/imx290.c | 50 ++++++++++++++++++++------------------ 1 file changed, 26 insertions(+), 24 deletions(-) diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c index d3279d88f253..e7043e9a8fd5 100644 --- a/drivers/media/i2c/imx290.c +++ b/drivers/media/i2c/imx290.c @@ -152,6 +152,9 @@ #define IMX290_PIXEL_ARRAY_RECORDING_WIDTH 1920 #define IMX290_PIXEL_ARRAY_RECORDING_HEIGHT 1080 +/* Equivalent value for 16bpp */ +#define IMX290_BLACK_LEVEL_DEFAULT 3840 + #define IMX290_NUM_SUPPLIES 3 struct imx290_regval { @@ -315,7 +318,6 @@ static const struct imx290_regval imx290_10bit_settings[] = { { IMX290_ADBIT2, IMX290_ADBIT2_10BIT }, { IMX290_ADBIT3, IMX290_ADBIT3_10BIT }, { IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW10 }, - { IMX290_BLKLEVEL, 60 }, }; static const struct imx290_regval imx290_12bit_settings[] = { @@ -325,7 +327,6 @@ static const struct imx290_regval imx290_12bit_settings[] = { { IMX290_ADBIT2, IMX290_ADBIT2_12BIT }, { IMX290_ADBIT3, IMX290_ADBIT3_12BIT }, { IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW12 }, - { IMX290_BLKLEVEL, 240 }, }; /* supported link frequencies */ @@ -516,35 +517,40 @@ static int imx290_set_data_lanes(struct imx290 *imx290) return ret; } +static int imx290_set_black_level(struct imx290 *imx290, + unsigned int black_level, int *err) +{ + return imx290_write(imx290, IMX290_BLKLEVEL, + black_level >> (16 - imx290->bpp), err); +} + static int imx290_write_current_format(struct imx290 *imx290) { + const struct imx290_regval *regs; + unsigned int num_regs; int ret; switch (imx290->current_format.code) { case MEDIA_BUS_FMT_SRGGB10_1X10: - ret = imx290_set_register_array(imx290, imx290_10bit_settings, - ARRAY_SIZE( - imx290_10bit_settings)); - if (ret < 0) { - dev_err(imx290->dev, "Could not set format registers\n"); - return ret; - } + regs = imx290_10bit_settings; + num_regs = ARRAY_SIZE(imx290_10bit_settings); break; case MEDIA_BUS_FMT_SRGGB12_1X12: - ret = imx290_set_register_array(imx290, imx290_12bit_settings, - ARRAY_SIZE( - imx290_12bit_settings)); - if (ret < 0) { - dev_err(imx290->dev, "Could not set format registers\n"); - return ret; - } + regs = imx290_12bit_settings; + num_regs = ARRAY_SIZE(imx290_12bit_settings); break; default: dev_err(imx290->dev, "Unknown pixel format\n"); return -EINVAL; } - return 0; + ret = imx290_set_register_array(imx290, regs, num_regs); + if (ret < 0) { + dev_err(imx290->dev, "Could not set format registers\n"); + return ret; + } + + return imx290_set_black_level(imx290, IMX290_BLACK_LEVEL_DEFAULT, &ret); } /* ---------------------------------------------------------------------------- @@ -573,7 +579,7 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_TEST_PATTERN: if (ctrl->val) { - imx290_write(imx290, IMX290_BLKLEVEL, 0, &ret); + imx290_set_black_level(imx290, 0, &ret); usleep_range(10000, 11000); imx290_write(imx290, IMX290_PGCTRL, (u8)(IMX290_PGCTRL_REGEN | @@ -582,12 +588,8 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl) } else { imx290_write(imx290, IMX290_PGCTRL, 0x00, &ret); usleep_range(10000, 11000); - if (imx290->bpp == 10) - imx290_write(imx290, IMX290_BLKLEVEL, 0x3c, - &ret); - else /* 12 bits per pixel */ - imx290_write(imx290, IMX290_BLKLEVEL, 0xf0, - &ret); + imx290_set_black_level(imx290, IMX290_BLACK_LEVEL_DEFAULT, + &ret); } break; default: