From patchwork Fri Nov 29 19:05:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11267545 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 B53956C1 for ; Fri, 29 Nov 2019 19:06:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 879D521781 for ; Fri, 29 Nov 2019 19:06:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="RmDkARxB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727110AbfK2TF7 (ORCPT ); Fri, 29 Nov 2019 14:05:59 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:46124 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727090AbfK2TF7 (ORCPT ); Fri, 29 Nov 2019 14:05:59 -0500 Received: by mail-pg1-f196.google.com with SMTP id k1so6417849pga.13 for ; Fri, 29 Nov 2019 11:05:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=QXtKRsM6VynlwjQE/FnWYU2XuBlYVR0gGpHghDHCIH8=; b=RmDkARxBBTcYThIJI3g+u2wq205gjr1lUn/84Vws2La/pdINoBSMb0o+CvsHOuDWKr L1I4cDK+MgUwEAHoDqaeWXZyMGi8/VehvqdmfzSpUPHLtRM7KWzuLP+t5+4UFHV8PpjV J4vv8k9V7kB2x4kzso/6j/rtotD26N/zqcFFMN4lB9TcWeTjqUsEPrju1OV2rYaRotwG xxp+JRJpge8iTeT5CXlHl2e2qh1Ar+zB8iih19I/rENm4D+HzuRAbPO30ZoVzEOThR+I 2Dv5r5vDJiETJa8fadSHSZYD2ZFvJDxhPo/X1ahLYeSmlp1w63HH+YLYWTOM7LHWjLTy dKbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=QXtKRsM6VynlwjQE/FnWYU2XuBlYVR0gGpHghDHCIH8=; b=iCqY4p7r2pYmexHs61XHcxJIM0L4q872QeqPL4WH1LwWBtOsN+hC7qXyd46uZ5Khob FlD1M1H5JVqqU7PvNyYBKPQUWYwYsd/7ufyI0Ba+bE7JKQqJgeiLG9wFudf/Jp6VNvBY RtNTsMHQHW9TIUwqnc1iXHmE6EFlRRChpSi6y8L+wEJaTRb9Uh4V1CEW9Ua1KYam0HQ6 dUmb+M8gYRTXufC7IH/IWeEMPXgmYN7wXyvwWIs52QhnwhJ+XYHKnrDLUcbhoI8As2fw D0jFNCq3eItVH1bUZF48KTxJRKl0BI2ftqyGeQK7sT5bWAUXtu12PnO9JEAL7Y9BYwR8 1SgA== X-Gm-Message-State: APjAAAU4dAuURe+FN2D7PNVi/sbedNF16arEte88aIxDEGR2SbCA78E9 mdX/0FRr6V/gN5q68IecU10O X-Google-Smtp-Source: APXvYqwcwpX46BEhvitkSypP8Oq6n8b3bcaiB3m8pOqa/yBtuq2Gy0nAPwXccr4OYrIEoH1BmyB+HA== X-Received: by 2002:a63:154d:: with SMTP id 13mr9273440pgv.248.1575054358658; Fri, 29 Nov 2019 11:05:58 -0800 (PST) Received: from localhost.localdomain ([2409:4072:638d:cc55:d006:f721:cde2:1059]) by smtp.gmail.com with ESMTPSA id h9sm25159974pgk.84.2019.11.29.11.05.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Nov 2019 11:05:58 -0800 (PST) From: Manivannan Sadhasivam To: mchehab@kernel.org, sakari.ailus@iki.fi Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, c.barrett@framos.com, a.brela@framos.com, peter.griffin@linaro.org, Manivannan Sadhasivam Subject: [PATCH 1/5] media: i2c: imx290: Add support for 2 data lanes Date: Sat, 30 Nov 2019 00:35:37 +0530 Message-Id: <20191129190541.30315-2-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191129190541.30315-1-manivannan.sadhasivam@linaro.org> References: <20191129190541.30315-1-manivannan.sadhasivam@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The IMX290 sensor can output frames with 2/4 CSI2 data lanes. This commit adds support for 2 lane mode in addition to the 4 lane and also configuring the data lane settings in the driver based on system configuration. Signed-off-by: Manivannan Sadhasivam --- drivers/media/i2c/imx290.c | 130 ++++++++++++++++++++++++++++++++++--- 1 file changed, 121 insertions(+), 9 deletions(-) diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c index f7678e5a5d87..1d49910937fb 100644 --- a/drivers/media/i2c/imx290.c +++ b/drivers/media/i2c/imx290.c @@ -25,7 +25,18 @@ #define IMX290_STANDBY 0x3000 #define IMX290_REGHOLD 0x3001 #define IMX290_XMSTA 0x3002 +#define IMX290_FR_FDG_SEL 0x3009 #define IMX290_GAIN 0x3014 +#define IMX290_HMAX_LOW 0x301c +#define IMX290_HMAX_HIGH 0x301d +#define IMX290_PHY_LANE_NUM 0x3407 +#define IMX290_CSI_LANE_MODE 0x3443 + +/* HMAX fields */ +#define IMX290_HMAX_2_1920 0x1130 +#define IMX290_HMAX_4_1920 0x0898 +#define IMX290_HMAX_2_720 0x19C8 +#define IMX290_HMAX_4_720 0x0CE4 #define IMX290_DEFAULT_LINK_FREQ 445500000 @@ -56,6 +67,7 @@ struct imx290 { struct device *dev; struct clk *xclk; struct regmap *regmap; + int nlanes; struct v4l2_subdev sd; struct v4l2_fwnode_endpoint ep; @@ -89,14 +101,11 @@ static const struct regmap_config imx290_regmap_config = { static const struct imx290_regval imx290_global_init_settings[] = { { 0x3007, 0x00 }, - { 0x3009, 0x00 }, { 0x3018, 0x65 }, { 0x3019, 0x04 }, { 0x301a, 0x00 }, - { 0x3443, 0x03 }, { 0x3444, 0x20 }, { 0x3445, 0x25 }, - { 0x3407, 0x03 }, { 0x303a, 0x0c }, { 0x3040, 0x00 }, { 0x3041, 0x00 }, @@ -169,7 +178,6 @@ static const struct imx290_regval imx290_1080p_settings[] = { { 0x3164, 0x1a }, { 0x3480, 0x49 }, /* data rate settings */ - { 0x3009, 0x01 }, { 0x3405, 0x10 }, { 0x3446, 0x57 }, { 0x3447, 0x00 }, @@ -187,8 +195,6 @@ static const struct imx290_regval imx290_1080p_settings[] = { { 0x3453, 0x00 }, { 0x3454, 0x17 }, { 0x3455, 0x00 }, - { 0x301c, 0x98 }, - { 0x301d, 0x08 }, }; static const struct imx290_regval imx290_720p_settings[] = { @@ -210,7 +216,6 @@ static const struct imx290_regval imx290_720p_settings[] = { { 0x3164, 0x1a }, { 0x3480, 0x49 }, /* data rate settings */ - { 0x3009, 0x01 }, { 0x3405, 0x10 }, { 0x3446, 0x4f }, { 0x3447, 0x00 }, @@ -228,8 +233,6 @@ static const struct imx290_regval imx290_720p_settings[] = { { 0x3453, 0x00 }, { 0x3454, 0x17 }, { 0x3455, 0x00 }, - { 0x301c, 0xe4 }, - { 0x301d, 0x0c }, }; static const struct imx290_regval imx290_10bit_settings[] = { @@ -522,6 +525,25 @@ static int imx290_write_current_format(struct imx290 *imx290, return 0; } +static int imx290_set_hmax(struct imx290 *imx290, u32 val) +{ + int ret; + + ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (val & 0xff)); + if (ret) { + dev_err(imx290->dev, "Error setting HMAX register\n"); + return ret; + } + + ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((val >> 8) & 0xff)); + if (ret) { + dev_err(imx290->dev, "Error setting HMAX register\n"); + return ret; + } + + return 0; +} + /* Start streaming */ static int imx290_start_streaming(struct imx290 *imx290) { @@ -551,6 +573,40 @@ static int imx290_start_streaming(struct imx290 *imx290) return ret; } + switch (imx290->nlanes) { + case 2: + if (imx290->current_mode->width == 1920) { + ret = imx290_set_hmax(imx290, IMX290_HMAX_2_1920); + if (ret < 0) + return ret; + } else { + ret = imx290_set_hmax(imx290, IMX290_HMAX_2_720); + if (ret < 0) + return ret; + } + + break; + case 4: + if (imx290->current_mode->width == 1920) { + ret = imx290_set_hmax(imx290, IMX290_HMAX_4_1920); + if (ret < 0) + return ret; + } else { + ret = imx290_set_hmax(imx290, IMX290_HMAX_4_720); + if (ret < 0) + return ret; + } + + break; + default: + /* + * We should never hit this since the data lane count is + * validated in probe itself + */ + dev_err(imx290->dev, "Lane configuration not supported\n"); + return -EINVAL; + } + /* Apply customized values from user */ ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler); if (ret) { @@ -607,6 +663,49 @@ static int imx290_get_regulators(struct device *dev, struct imx290 *imx290) imx290->supplies); } +static int imx290_set_data_lanes(struct imx290 *imx290) +{ + int ret = 0, laneval, frsel; + + switch (imx290->nlanes) { + case 2: + laneval = 0x01; + frsel = 0x02; + break; + case 4: + laneval = 0x03; + frsel = 0x01; + break; + default: + /* + * We should never hit this since the data lane count is + * validated in probe itself + */ + dev_err(imx290->dev, "Lane configuration not supported\n"); + ret = -EINVAL; + goto exit; + } + + ret = imx290_write_reg(imx290, IMX290_PHY_LANE_NUM, laneval); + if (ret) { + dev_err(imx290->dev, "Error setting Physical Lane number register\n"); + goto exit; + } + + ret = imx290_write_reg(imx290, IMX290_CSI_LANE_MODE, laneval); + if (ret) { + dev_err(imx290->dev, "Error setting CSI Lane mode register\n"); + goto exit; + } + + ret = imx290_write_reg(imx290, IMX290_FR_FDG_SEL, frsel); + if (ret) + dev_err(imx290->dev, "Error setting FR/FDG SEL register\n"); + +exit: + return ret; +} + static int imx290_power_on(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); @@ -703,6 +802,16 @@ static int imx290_probe(struct i2c_client *client) goto free_err; } + /* Get number of data lanes */ + imx290->nlanes = imx290->ep.bus.mipi_csi2.num_data_lanes; + if (imx290->nlanes != 2 && imx290->nlanes != 4) { + dev_err(dev, "Invalid data lanes: %d\n", imx290->nlanes); + ret = -EINVAL; + goto free_err; + } + + dev_dbg(dev, "Using %u data lanes\n", imx290->nlanes); + if (!imx290->ep.nr_of_link_frequencies) { dev_err(dev, "link-frequency property not found in DT\n"); ret = -EINVAL; @@ -822,6 +931,9 @@ static int imx290_probe(struct i2c_client *client) goto free_entity; } + /* Set data lane count */ + imx290_set_data_lanes(imx290); + pm_runtime_set_active(dev); pm_runtime_enable(dev); pm_runtime_idle(dev);