From patchwork Wed Feb 15 22:29:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 654320 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 888AEC636D6 for ; Wed, 15 Feb 2023 22:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229747AbjBOWaY (ORCPT ); Wed, 15 Feb 2023 17:30:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229759AbjBOWaX (ORCPT ); Wed, 15 Feb 2023 17:30:23 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BB3A37B6D for ; Wed, 15 Feb 2023 14:30:22 -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 A1F14563; Wed, 15 Feb 2023 23:30:20 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1676500220; bh=b5mdo2LIa8QwdGd5I7Jf7cQ8ZjrI638Mxbcn9ZdOfcU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p561p9/OJyBgPwT4gZ+rA0Eqszir9uMpPjJ7mJX5Xpu3PR5pwX/R/v9jOEnwUSF3L OU3cml5K2kj8JuTaMQQXYv1dlHOgqlMjLIS6WM6k8+6b79DieD8dDDPBDrmOc3+I4g /gTOeo1PJgmazXLtJNJgubR2ISi+ey6Nj+U/J6a8= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , Manivannan Sadhasivam , Sakari Ailus , Alexander Stein Subject: [PATCH v3 08/15] media: i2c: imx290: Use CSI timings as per datasheet Date: Thu, 16 Feb 2023 00:29:56 +0200 Message-Id: <20230215223003.30170-9-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230215223003.30170-1-laurent.pinchart@ideasonboard.com> References: <20230215223003.30170-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Dave Stevenson Commit "98e0500eadb7 media: i2c: imx290: Add configurable link frequency and pixel rate" added support for the increased link frequencies on 2 data lanes, but didn't update the CSI timing registers in accordance with the datasheet. Use the specified settings. Signed-off-by: Dave Stevenson Reviewed-by: Laurent Pinchart Reviewed-by: Alexander Stein Signed-off-by: Laurent Pinchart --- Changes since v2: - Fix typo in comment --- drivers/media/i2c/imx290.c | 126 +++++++++++++++++++++++++++++++------ 1 file changed, 106 insertions(+), 20 deletions(-) diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c index b83918ac4cc3..26194c2b04c4 100644 --- a/drivers/media/i2c/imx290.c +++ b/drivers/media/i2c/imx290.c @@ -190,6 +190,18 @@ struct imx290_mode { u32 data_size; }; +struct imx290_csi_cfg { + u16 repetition; + u16 tclkpost; + u16 thszero; + u16 thsprepare; + u16 tclktrail; + u16 thstrail; + u16 tclkzero; + u16 tclkprepare; + u16 tlpx; +}; + struct imx290 { struct device *dev; struct clk *xclk; @@ -289,16 +301,6 @@ static const struct imx290_regval imx290_1080p_settings[] = { { IMX290_INCKSEL4, 0x01 }, { IMX290_INCKSEL5, 0x1a }, { IMX290_INCKSEL6, 0x1a }, - /* data rate settings */ - { IMX290_REPETITION, 0x10 }, - { IMX290_TCLKPOST, 87 }, - { IMX290_THSZERO, 55 }, - { IMX290_THSPREPARE, 31 }, - { IMX290_TCLKTRAIL, 31 }, - { IMX290_THSTRAIL, 31 }, - { IMX290_TCLKZERO, 119 }, - { IMX290_TCLKPREPARE, 31 }, - { IMX290_TLPX, 23 }, }; static const struct imx290_regval imx290_720p_settings[] = { @@ -314,16 +316,6 @@ static const struct imx290_regval imx290_720p_settings[] = { { IMX290_INCKSEL4, 0x01 }, { IMX290_INCKSEL5, 0x1a }, { IMX290_INCKSEL6, 0x1a }, - /* data rate settings */ - { IMX290_REPETITION, 0x10 }, - { IMX290_TCLKPOST, 79 }, - { IMX290_THSZERO, 47 }, - { IMX290_THSPREPARE, 23 }, - { IMX290_TCLKTRAIL, 23 }, - { IMX290_THSTRAIL, 23 }, - { IMX290_TCLKZERO, 87 }, - { IMX290_TCLKPREPARE, 23 }, - { IMX290_TLPX, 23 }, }; static const struct imx290_regval imx290_10bit_settings[] = { @@ -344,6 +336,58 @@ static const struct imx290_regval imx290_12bit_settings[] = { { IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW12 }, }; +static const struct imx290_csi_cfg imx290_csi_222_75mhz = { + /* 222.75MHz or 445.5Mbit/s per lane */ + .repetition = 0x10, + .tclkpost = 87, + .thszero = 55, + .thsprepare = 31, + .tclktrail = 31, + .thstrail = 31, + .tclkzero = 119, + .tclkprepare = 31, + .tlpx = 23, +}; + +static const struct imx290_csi_cfg imx290_csi_445_5mhz = { + /* 445.5MHz or 891Mbit/s per lane */ + .repetition = 0x00, + .tclkpost = 119, + .thszero = 103, + .thsprepare = 71, + .tclktrail = 55, + .thstrail = 63, + .tclkzero = 255, + .tclkprepare = 63, + .tlpx = 55, +}; + +static const struct imx290_csi_cfg imx290_csi_148_5mhz = { + /* 148.5MHz or 297Mbit/s per lane */ + .repetition = 0x10, + .tclkpost = 79, + .thszero = 47, + .thsprepare = 23, + .tclktrail = 23, + .thstrail = 23, + .tclkzero = 87, + .tclkprepare = 23, + .tlpx = 23, +}; + +static const struct imx290_csi_cfg imx290_csi_297mhz = { + /* 297MHz or 594Mbit/s per lane */ + .repetition = 0x00, + .tclkpost = 103, + .thszero = 87, + .thsprepare = 47, + .tclktrail = 39, + .thstrail = 47, + .tclkzero = 191, + .tclkprepare = 47, + .tlpx = 39, +}; + /* supported link frequencies */ #define FREQ_INDEX_1080P 0 #define FREQ_INDEX_720P 1 @@ -557,6 +601,42 @@ static int imx290_set_black_level(struct imx290 *imx290, black_level >> (16 - bpp), err); } +static int imx290_set_csi_config(struct imx290 *imx290) +{ + const s64 *link_freqs = imx290_link_freqs_ptr(imx290); + const struct imx290_csi_cfg *csi_cfg; + int ret = 0; + + switch (link_freqs[imx290->current_mode->link_freq_index]) { + case 445500000: + csi_cfg = &imx290_csi_445_5mhz; + break; + case 297000000: + csi_cfg = &imx290_csi_297mhz; + break; + case 222750000: + csi_cfg = &imx290_csi_222_75mhz; + break; + case 148500000: + csi_cfg = &imx290_csi_148_5mhz; + break; + default: + return -EINVAL; + } + + imx290_write(imx290, IMX290_REPETITION, csi_cfg->repetition, &ret); + imx290_write(imx290, IMX290_TCLKPOST, csi_cfg->tclkpost, &ret); + imx290_write(imx290, IMX290_THSZERO, csi_cfg->thszero, &ret); + imx290_write(imx290, IMX290_THSPREPARE, csi_cfg->thsprepare, &ret); + imx290_write(imx290, IMX290_TCLKTRAIL, csi_cfg->tclktrail, &ret); + imx290_write(imx290, IMX290_THSTRAIL, csi_cfg->thstrail, &ret); + imx290_write(imx290, IMX290_TCLKZERO, csi_cfg->tclkzero, &ret); + imx290_write(imx290, IMX290_TCLKPREPARE, csi_cfg->tclkprepare, &ret); + imx290_write(imx290, IMX290_TLPX, csi_cfg->tlpx, &ret); + + return ret; +} + static int imx290_setup_format(struct imx290 *imx290, const struct v4l2_mbus_framefmt *format) { @@ -769,6 +849,12 @@ static int imx290_start_streaming(struct imx290 *imx290, return ret; } + ret = imx290_set_csi_config(imx290); + if (ret < 0) { + dev_err(imx290->dev, "Could not set csi cfg\n"); + return ret; + } + /* Apply the register values related to current frame format */ format = v4l2_subdev_get_pad_format(&imx290->sd, state, 0); ret = imx290_setup_format(imx290, format);