From patchwork Tue May 30 17:29:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Stevenson X-Patchwork-Id: 687041 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 11D67C7EE32 for ; Tue, 30 May 2023 17:31:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233484AbjE3RbB (ORCPT ); Tue, 30 May 2023 13:31:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233411AbjE3Ra5 (ORCPT ); Tue, 30 May 2023 13:30:57 -0400 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2198F133 for ; Tue, 30 May 2023 10:30:43 -0700 (PDT) Received: by mail-wr1-x435.google.com with SMTP id ffacd0b85a97d-30af86a96b4so506178f8f.3 for ; Tue, 30 May 2023 10:30:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raspberrypi.com; s=google; t=1685467841; x=1688059841; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=7ZSyDMKbn7895XHyKFyQxSeXVFo2FOQ8DM2PUTA4yfA=; b=oQiBQGeEz7NaiYO6TxKMla9Q/9kAAjBklvopZ4r8D138guGbFy7dxocYIJbWr31AGA 2vxk0d4aw6E4xPbNJRIcrIU3xOS+W3sTNVzbCWuPMFqPSJgCUUzNf06f05DcOO7bd/q+ UYH3wLg4/nm8M3SBP5Y3ZE4c5paLPIkY2MyiI+6ocA3zrp8GmZhMTQwpVcjjsHADk3vg YpJLNohpjS+dbcmmUD19DrG1ZEe3WhmI1KfCrHhHMgqT32W5TF/VfCiwhhX45CCLSTtp 9iHzHbAGcTdraLanhFN9pTb3ni8A0PPV7Ag3P7E6CKR+t9C/ysnzlwWXxRmpdnMaBLTi v6Eg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685467841; x=1688059841; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=7ZSyDMKbn7895XHyKFyQxSeXVFo2FOQ8DM2PUTA4yfA=; b=ixFNfqkeIIM//HNjlMbDEM2dBPg9KC/YRI6W0fhFRiPqP/OLS0ANMgJSfO2HvDppab X3yXFd7JZciV/pg4FDjEw1jDwWkOeEfu0uP+p/+wOxIvaV6vnogvP0HiH2WRLAlYxiJu K5mag7YXIXlJ2C7zkRgtv8aY7jefIWUkobbvpZiJ5wsOQvxlshCHIGtW1nI0Rg86jocs tESddsvvVDrciS/W6dNjJxVoR+lWM0LgU8Ku7tro/LrIQnNGxQJwxDNex2kFHjoOpbrQ wr0UlIZc4mXTJZhz5o6xkL6y6VULl+PvrnuxduXWhBZ2u1wfy9/ZopdwpaqWDc+SyDQz PXoQ== X-Gm-Message-State: AC+VfDw4uV5p/Y8cJ/e9Gyc9fTJ09hBkqmEUYF9iwBnfkjjaolEE4XJ3 g31NBp1wbkgUORnuboUQ7iqaWw== X-Google-Smtp-Source: ACHHUZ7+Fxn6Adgaa/yNZ6eLBb/jzjH0VNbcLe8swDCYEwt7d/vm0UaQ44rTFvbYvpDSeovgUWrD7A== X-Received: by 2002:a5d:408e:0:b0:2ef:ba4f:c821 with SMTP id o14-20020a5d408e000000b002efba4fc821mr2034857wrp.36.1685467841154; Tue, 30 May 2023 10:30:41 -0700 (PDT) Received: from dave-Ubuntu2204.pitowers.org ([93.93.133.154]) by smtp.googlemail.com with ESMTPSA id h14-20020a056000000e00b0030ae901bc54sm3964823wrx.62.2023.05.30.10.30.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 May 2023 10:30:40 -0700 (PDT) From: Dave Stevenson To: Sakari Ailus , linux-media@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org Cc: Dave Stevenson Subject: [PATCH 09/21] media: i2c: imx258: Add support for running on 2 CSI data lanes Date: Tue, 30 May 2023 18:29:48 +0100 Message-Id: <20230530173000.3060865-10-dave.stevenson@raspberrypi.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230530173000.3060865-1-dave.stevenson@raspberrypi.com> References: <20230530173000.3060865-1-dave.stevenson@raspberrypi.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Extends the driver to also support 2 data lanes. Frame rates are obviously more restricted on 2 lanes, but some hardware simply hasn't wired more up. Signed-off-by: Dave Stevenson --- drivers/media/i2c/imx258.c | 211 ++++++++++++++++++++++++++++++++----- 1 file changed, 187 insertions(+), 24 deletions(-) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index d40521f9a3c6..433dff7f1fa0 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -86,13 +86,17 @@ struct imx258_reg_list { const struct imx258_reg *regs; }; +#define IMX258_LANE_CONFIGS 2 +#define IMX258_2_LANE_MODE 0 +#define IMX258_4_LANE_MODE 1 + /* Link frequency config */ struct imx258_link_freq_config { u64 link_frequency; u32 pixels_per_line; /* PLL registers for this link frequency */ - struct imx258_reg_list reg_list; + struct imx258_reg_list reg_list[IMX258_LANE_CONFIGS]; }; /* Mode : resolution and related config&values */ @@ -112,8 +116,30 @@ struct imx258_mode { struct imx258_reg_list reg_list; }; -/* 4208x3120 needs 1267Mbps/lane, 4 lanes */ -static const struct imx258_reg mipi_1267mbps_19_2mhz[] = { +/* 4208x3120 needs 1267Mbps/lane, 4 lanes. Use that rate on 2 lanes as well */ +static const struct imx258_reg mipi_1267mbps_19_2mhz_2l[] = { + { 0x0136, 0x13 }, + { 0x0137, 0x33 }, + { 0x0301, 0x0A }, + { 0x0303, 0x02 }, + { 0x0305, 0x03 }, + { 0x0306, 0x00 }, + { 0x0307, 0xC6 }, + { 0x0309, 0x0A }, + { 0x030B, 0x01 }, + { 0x030D, 0x02 }, + { 0x030E, 0x00 }, + { 0x030F, 0xD8 }, + { 0x0310, 0x00 }, + + { 0x0114, 0x01 }, + { 0x0820, 0x09 }, + { 0x0821, 0xa6 }, + { 0x0822, 0x66 }, + { 0x0823, 0x66 }, +}; + +static const struct imx258_reg mipi_1267mbps_19_2mhz_4l[] = { { 0x0136, 0x13 }, { 0x0137, 0x33 }, { 0x0301, 0x05 }, @@ -127,16 +153,18 @@ static const struct imx258_reg mipi_1267mbps_19_2mhz[] = { { 0x030E, 0x00 }, { 0x030F, 0xD8 }, { 0x0310, 0x00 }, + + { 0x0114, 0x03 }, { 0x0820, 0x13 }, { 0x0821, 0x4C }, { 0x0822, 0xCC }, { 0x0823, 0xCC }, }; -static const struct imx258_reg mipi_1272mbps_24mhz[] = { +static const struct imx258_reg mipi_1272mbps_24mhz_2l[] = { { 0x0136, 0x18 }, { 0x0137, 0x00 }, - { 0x0301, 0x05 }, + { 0x0301, 0x0a }, { 0x0303, 0x02 }, { 0x0305, 0x04 }, { 0x0306, 0x00 }, @@ -147,13 +175,59 @@ static const struct imx258_reg mipi_1272mbps_24mhz[] = { { 0x030E, 0x00 }, { 0x030F, 0xD8 }, { 0x0310, 0x00 }, + + { 0x0114, 0x01 }, { 0x0820, 0x13 }, { 0x0821, 0x4C }, { 0x0822, 0xCC }, { 0x0823, 0xCC }, }; -static const struct imx258_reg mipi_640mbps_19_2mhz[] = { +static const struct imx258_reg mipi_1272mbps_24mhz_4l[] = { + { 0x0136, 0x18 }, + { 0x0137, 0x00 }, + { 0x0301, 0x05 }, + { 0x0303, 0x02 }, + { 0x0305, 0x04 }, + { 0x0306, 0x00 }, + { 0x0307, 0xD4 }, + { 0x0309, 0x0A }, + { 0x030B, 0x01 }, + { 0x030D, 0x02 }, + { 0x030E, 0x00 }, + { 0x030F, 0xD8 }, + { 0x0310, 0x00 }, + + { 0x0114, 0x03 }, + { 0x0820, 0x13 }, + { 0x0821, 0xE0 }, + { 0x0822, 0x00 }, + { 0x0823, 0x00 }, +}; + +static const struct imx258_reg mipi_640mbps_19_2mhz_2l[] = { + { 0x0136, 0x13 }, + { 0x0137, 0x33 }, + { 0x0301, 0x05 }, + { 0x0303, 0x02 }, + { 0x0305, 0x03 }, + { 0x0306, 0x00 }, + { 0x0307, 0x64 }, + { 0x0309, 0x0A }, + { 0x030B, 0x01 }, + { 0x030D, 0x02 }, + { 0x030E, 0x00 }, + { 0x030F, 0xD8 }, + { 0x0310, 0x00 }, + + { 0x0114, 0x01 }, + { 0x0820, 0x05 }, + { 0x0821, 0x00 }, + { 0x0822, 0x00 }, + { 0x0823, 0x00 }, +}; + +static const struct imx258_reg mipi_640mbps_19_2mhz_4l[] = { { 0x0136, 0x13 }, { 0x0137, 0x33 }, { 0x0301, 0x05 }, @@ -167,13 +241,37 @@ static const struct imx258_reg mipi_640mbps_19_2mhz[] = { { 0x030E, 0x00 }, { 0x030F, 0xD8 }, { 0x0310, 0x00 }, + + { 0x0114, 0x03 }, { 0x0820, 0x0A }, { 0x0821, 0x00 }, { 0x0822, 0x00 }, { 0x0823, 0x00 }, }; -static const struct imx258_reg mipi_642mbps_24mhz[] = { +static const struct imx258_reg mipi_642mbps_24mhz_2l[] = { + { 0x0136, 0x18 }, + { 0x0137, 0x00 }, + { 0x0301, 0x0A }, + { 0x0303, 0x02 }, + { 0x0305, 0x04 }, + { 0x0306, 0x00 }, + { 0x0307, 0x6B }, + { 0x0309, 0x0A }, + { 0x030B, 0x01 }, + { 0x030D, 0x02 }, + { 0x030E, 0x00 }, + { 0x030F, 0xD8 }, + { 0x0310, 0x00 }, + + { 0x0114, 0x01 }, + { 0x0820, 0x0A }, + { 0x0821, 0x00 }, + { 0x0822, 0x00 }, + { 0x0823, 0x00 }, +}; + +static const struct imx258_reg mipi_642mbps_24mhz_4l[] = { { 0x0136, 0x18 }, { 0x0137, 0x00 }, { 0x0301, 0x05 }, @@ -187,6 +285,8 @@ static const struct imx258_reg mipi_642mbps_24mhz[] = { { 0x030E, 0x00 }, { 0x030F, 0xD8 }, { 0x0310, 0x00 }, + + { 0x0114, 0x03 }, { 0x0820, 0x0A }, { 0x0821, 0x00 }, { 0x0822, 0x00 }, @@ -241,7 +341,6 @@ static const struct imx258_reg mode_common_regs[] = { { 0x5F05, 0xED }, { 0x0112, 0x0A }, { 0x0113, 0x0A }, - { 0x0114, 0x03 }, { 0x0342, 0x14 }, { 0x0343, 0xE8 }, { 0x0344, 0x00 }, @@ -360,11 +459,13 @@ enum { /* * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample - * data rate => double data rate; number of lanes => 4; bits per pixel => 10 + * data rate => double data rate; + * number of lanes => (configurable 2 or 4); + * bits per pixel => 10 */ -static u64 link_freq_to_pixel_rate(u64 f) +static u64 link_freq_to_pixel_rate(u64 f, unsigned int nlanes) { - f *= 2 * 4; + f *= 2 * nlanes; do_div(f, 10); return f; @@ -394,15 +495,27 @@ static const struct imx258_link_freq_config link_freq_configs_19_2[] = { [IMX258_LINK_FREQ_1267MBPS] = { .pixels_per_line = IMX258_PPL_DEFAULT, .reg_list = { - .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz), - .regs = mipi_1267mbps_19_2mhz, + [IMX258_2_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_2l), + .regs = mipi_1267mbps_19_2mhz_2l, + }, + [IMX258_4_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_4l), + .regs = mipi_1267mbps_19_2mhz_4l, + }, } }, [IMX258_LINK_FREQ_640MBPS] = { .pixels_per_line = IMX258_PPL_DEFAULT, .reg_list = { - .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz), - .regs = mipi_640mbps_19_2mhz, + [IMX258_2_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_2l), + .regs = mipi_640mbps_19_2mhz_2l, + }, + [IMX258_4_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_4l), + .regs = mipi_640mbps_19_2mhz_4l, + }, } }, }; @@ -411,15 +524,27 @@ static const struct imx258_link_freq_config link_freq_configs_24[] = { [IMX258_LINK_FREQ_1267MBPS] = { .pixels_per_line = IMX258_PPL_DEFAULT, .reg_list = { - .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz), - .regs = mipi_1272mbps_24mhz, + [IMX258_2_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_2l), + .regs = mipi_1272mbps_24mhz_2l, + }, + [IMX258_4_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_4l), + .regs = mipi_1272mbps_24mhz_4l, + }, } }, [IMX258_LINK_FREQ_640MBPS] = { .pixels_per_line = IMX258_PPL_DEFAULT, .reg_list = { - .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz), - .regs = mipi_642mbps_24mhz, + [IMX258_2_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_2l), + .regs = mipi_642mbps_24mhz_2l, + }, + [IMX258_4_LANE_MODE] = { + .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_4l), + .regs = mipi_642mbps_24mhz_4l, + }, } }, }; @@ -478,6 +603,7 @@ struct imx258 { const struct imx258_link_freq_config *link_freq_configs; const s64 *link_freq_menu_items; + unsigned int nlanes; /* * Mutex for serialized access: @@ -787,7 +913,7 @@ static int imx258_set_pad_format(struct v4l2_subdev *sd, __v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index); link_freq = imx258->link_freq_menu_items[mode->link_freq_index]; - pixel_rate = link_freq_to_pixel_rate(link_freq); + pixel_rate = link_freq_to_pixel_rate(link_freq, imx258->nlanes); __v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate); /* Update limits and set FPS to default */ vblank_def = imx258->cur_mode->vts_def - @@ -816,11 +942,13 @@ static int imx258_start_streaming(struct imx258 *imx258) { struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd); const struct imx258_reg_list *reg_list; + const struct imx258_link_freq_config *link_freq_cfg; int ret, link_freq_index; /* Setup PLL */ link_freq_index = imx258->cur_mode->link_freq_index; - reg_list = &imx258->link_freq_configs[link_freq_index].reg_list; + link_freq_cfg = &imx258->link_freq_configs[link_freq_index]; + reg_list = &link_freq_cfg->reg_list[imx258->nlanes == 2 ? 0 : 1]; ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs); if (ret) { dev_err(&client->dev, "%s failed to set plls\n", __func__); @@ -1074,9 +1202,11 @@ static int imx258_init_controls(struct imx258 *imx258) vflip->flags |= V4L2_CTRL_FLAG_READ_ONLY; pixel_rate_max = - link_freq_to_pixel_rate(imx258->link_freq_menu_items[0]); + link_freq_to_pixel_rate(imx258->link_freq_menu_items[0], + imx258->nlanes); pixel_rate_min = - link_freq_to_pixel_rate(imx258->link_freq_menu_items[1]); + link_freq_to_pixel_rate(imx258->link_freq_menu_items[1], + imx258->nlanes); /* By default, PIXEL_RATE is read only */ imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_PIXEL_RATE, @@ -1174,6 +1304,10 @@ static int imx258_get_regulators(struct imx258 *imx258, static int imx258_probe(struct i2c_client *client) { struct imx258 *imx258; + struct fwnode_handle *endpoint; + struct v4l2_fwnode_endpoint ep = { + .bus_type = V4L2_MBUS_CSI2_DPHY + }; int ret; u32 val = 0; @@ -1216,13 +1350,38 @@ static int imx258_probe(struct i2c_client *client) return -EINVAL; } + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL); + if (!endpoint) { + dev_err(&client->dev, "Endpoint node not found\n"); + return -EINVAL; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep); + fwnode_handle_put(endpoint); + if (ret == -ENXIO) { + dev_err(&client->dev, "Unsupported bus type, should be CSI2\n"); + goto error_endpoint_poweron; + } else if (ret) { + dev_err(&client->dev, "Parsing endpoint node failed\n"); + goto error_endpoint_poweron; + } + + /* Get number of data lanes */ + imx258->nlanes = ep.bus.mipi_csi2.num_data_lanes; + if (imx258->nlanes != 2 && imx258->nlanes != 4) { + dev_err(&client->dev, "Invalid data lanes: %u\n", + imx258->nlanes); + ret = -EINVAL; + goto error_endpoint_poweron; + } + /* Initialize subdev */ v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops); /* Will be powered off via pm_runtime_idle */ ret = imx258_power_on(&client->dev); if (ret) - return ret; + goto error_endpoint_poweron; /* Check module identity */ ret = imx258_identify_module(imx258); @@ -1255,6 +1414,7 @@ static int imx258_probe(struct i2c_client *client) pm_runtime_set_active(&client->dev); pm_runtime_enable(&client->dev); pm_runtime_idle(&client->dev); + v4l2_fwnode_endpoint_free(&endpoint); return 0; @@ -1267,6 +1427,9 @@ static int imx258_probe(struct i2c_client *client) error_identify: imx258_power_off(&client->dev); +error_endpoint_poweron: + v4l2_fwnode_endpoint_free(&ep); + return ret; }