From patchwork Mon Apr 29 19:08:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13647551 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EBE0313AD1A for ; Mon, 29 Apr 2024 19:08:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417740; cv=none; b=nATwkFDHr9sxN3WpXJIvExI6fnVSG3zfg4O3kS+UVv/CP8ApcJyObiT4u0qVbEI8GGofW+HHg6J7fcvDuI60PMtie7E5cgYdy4z0+C8Aodqne6Btsd08XTqVcg5iObmKyElyaJ3k3JP6O1XsLSWWC1WufD2ryIFqz+pSI1mBJkI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417740; c=relaxed/simple; bh=ZpKRy1M2fNG2ERRyUF8FAQ0dw+Nbc41Phkw+ptejPro=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=cB3JGytbdwPOLaCmtjKN3s1rTfLilqfOxFpt9Zq82gtwgNAOcxRu8Sqof7tpYeuOcqk/FzE7km1RupeeySq6riCmIjgCfLjbA7MERVUkGNFIAFm6clyfKhroRZ+YYD9fI5gdeu4qfSHhW598KUOmXH//nww7jLX/kBdlhgwOkFs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nEgProYQ; arc=none smtp.client-ip=198.175.65.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nEgProYQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714417739; x=1745953739; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ZpKRy1M2fNG2ERRyUF8FAQ0dw+Nbc41Phkw+ptejPro=; b=nEgProYQCiZ4Jqi6kxZ+f1R1DGL5Oo+nP8DTo9UfFgYbGFzaaVT9YADt tgJqgErBfPco5O+5SzxvEDDZ2uqSG9JDhVB/P0eR70t7S0aPwfpKY2f9Z JrmfIHYtaFsbKbkW3Q7LIfh11nxyIDmigf6RI9g7UsCSmhbWAIcUfhDKq to19si5R8hHpniMdB/cuMg3EejRrU5RGp58QqOMeqMe//K9vnLvzGZKLC AMJRU/eq0e8lOjJg9FbPN8SwPkXJBoPNlx6+iVoQEFVA0iARBu7v3XJov gkxN+GjdMKil9Qmgd9AFTWfd/Hyf2sF9+h9DACsrHcemM9YezlRyblbiI A==; X-CSE-ConnectionGUID: doDNfMvnT9erUGHjLtCzdg== X-CSE-MsgGUID: WZC42e2lS8+N0NBKsn+HsQ== X-IronPort-AV: E=McAfee;i="6600,9927,11059"; a="13875326" X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="13875326" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:57 -0700 X-CSE-ConnectionGUID: IJyyQ6UeSeWRZzS/LInxzA== X-CSE-MsgGUID: dsaHR94hT1WmFOI/LaawRg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="30846310" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:56 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 5FBB011FA8A; Mon, 29 Apr 2024 22:08:53 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, Wentong Wu Subject: [PATCH v4 1/4] media: v4l: Support passing sub-device argument to v4l2_get_link_freq() Date: Mon, 29 Apr 2024 22:08:49 +0300 Message-Id: <20240429190852.1008003-2-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> References: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 v4l2_get_link_freq() accepts a V4L2 control handler for now, but it needs to take struct v4l2_subdev argument in order to obtain the link frequency using get_mbus_config() pad op. Prepare for this by allowing struct v4l2_subdev as well. Signed-off-by: Sakari Ailus --- drivers/media/v4l2-core/v4l2-common.c | 19 ++++++++++++++++--- include/media/v4l2-common.h | 14 +++++++++++--- 2 files changed, 27 insertions(+), 6 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 4165c815faef..7f69b5a025fa 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -464,8 +464,8 @@ int v4l2_fill_pixfmt(struct v4l2_pix_format *pixfmt, u32 pixelformat, } EXPORT_SYMBOL_GPL(v4l2_fill_pixfmt); -s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul, - unsigned int div) +s64 __v4l2_get_link_freq_ctrl(struct v4l2_ctrl_handler *handler, + unsigned int mul, unsigned int div) { struct v4l2_ctrl *ctrl; s64 freq; @@ -500,7 +500,20 @@ s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul, return freq > 0 ? freq : -EINVAL; } -EXPORT_SYMBOL_GPL(v4l2_get_link_freq); +EXPORT_SYMBOL_GPL(__v4l2_get_link_freq_ctrl); + +s64 __v4l2_get_link_freq_pad(struct media_pad *pad, unsigned int mul, + unsigned int div) +{ + struct v4l2_subdev *sd; + + sd = media_entity_to_v4l2_subdev(pad->entity); + if (!sd) + return -ENODEV; + + return __v4l2_get_link_freq_ctrl(sd->ctrl_handler, mul, div); +} +EXPORT_SYMBOL_GPL(__v4l2_get_link_freq_pad); /* * Simplify a fraction using a simple continued fraction decomposition. The diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 63ad36f04f72..d7115cd61a38 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -525,7 +525,8 @@ int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, u32 pixelformat, /** * v4l2_get_link_freq - Get link rate from transmitter * - * @handler: The transmitter's control handler + * @pad: The transmitter's media pad (or control handler for compatibility + * reasons, don't use in new code) * @mul: The multiplier between pixel rate and link frequency. Bits per pixel on * D-PHY, samples per clock on parallel. 0 otherwise. * @div: The divisor between pixel rate and link frequency. Number of data lanes @@ -541,8 +542,15 @@ int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, u32 pixelformat, * * %-ENOENT: Link frequency or pixel rate control not found * * %-EINVAL: Invalid link frequency value */ -s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul, - unsigned int div); +#define v4l2_get_link_freq(pad, mul, div) \ + _Generic(pad, \ + struct media_pad *: __v4l2_get_link_freq_pad, \ + struct v4l2_ctrl_handler *: __v4l2_get_link_freq_ctrl) \ + (pad, mul, div) +s64 __v4l2_get_link_freq_pad(struct media_pad *pad, unsigned int mul, + unsigned int div); +s64 __v4l2_get_link_freq_ctrl(struct v4l2_ctrl_handler *handler, + unsigned int mul, unsigned int div); void v4l2_simplify_fraction(u32 *numerator, u32 *denominator, unsigned int n_terms, unsigned int threshold); From patchwork Mon Apr 29 19:08:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13647552 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4181113AD29 for ; Mon, 29 Apr 2024 19:08:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417740; cv=none; b=VpqEC3vRPcU6MytqFmhTC8Az0RDeHE4RFei6Bjcoh40DqSl6cnjywwtk3zOzeG6SO47cXM+Ncss4AESx2f3uYhtpK7zu4Behtg7jFttBMtLgFKMY6PkSF7vciMNICem5W5NOxQ6hqY9D8A0G4TP/yyBESWTejWf1+Mtbfp4y7g0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417740; c=relaxed/simple; bh=Xns0lP6SxmJ3DlnIEONicXGfYk2FNFFx8g3cLDe7ljs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qhxT5bcQgO3qomEYE18Qb1thTEQXs05vfA29CZxrYC2QqN6Es1gSvc2sHuAfWE7rJxd913uE9VSbfXVPaMV4WCvvTLYay/RWIaxJ/HJR8+lbQtxpJbgKjFY9a+7VLi4KXvG088IANsoF3lEeyZNo1xaaKegU7UEqBOtelQ/LW4g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=aHU5Ma+I; arc=none smtp.client-ip=198.175.65.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="aHU5Ma+I" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714417739; x=1745953739; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Xns0lP6SxmJ3DlnIEONicXGfYk2FNFFx8g3cLDe7ljs=; b=aHU5Ma+IO+rvbeut+nzYHF/UoF/CyfJGlzwPAeA/A+tTfw91QO8I8DJL ZBIaKW5WELT3ZwVeHK04AsxoyTyyG/r3IFNCud/y9nvmHbKYnMR59g7MS OOp7gnHpmnQhMj8MZ+3mek85ZHAqiJzJZDz5AfHNr48lo6/byuIRor4cB IIl8bVRIBOcp/E/wC5S6iTjF+3WWKei5YDICaWUagEQRHZXOt3IALgn5r JLZb/BHXk6y5wVy/KiXRkPguysDTrfRcuICDz54kp8u0qcDlH/tPqd+2L bzH2MbzYQCm61D3OrMbNGG5JAKNmjsNUUS4zy6NyRfMsX8XrNmebP+cJk w==; X-CSE-ConnectionGUID: RDZ4DLmbSfCoxTsKzS1YtQ== X-CSE-MsgGUID: gba0ng3QS8a0c+eT7l+WaA== X-IronPort-AV: E=McAfee;i="6600,9927,11059"; a="13875332" X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="13875332" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:57 -0700 X-CSE-ConnectionGUID: oM9Y+1VmQQmBZ4+yBw1R9A== X-CSE-MsgGUID: k6NSF2EHSOK5ai2xyITYwg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="30846312" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:56 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 06C491201CC; Mon, 29 Apr 2024 22:08:53 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, Wentong Wu Subject: [PATCH v4 2/4] media: v4l: Support obtaining link frequency via get_mbus_config Date: Mon, 29 Apr 2024 22:08:50 +0300 Message-Id: <20240429190852.1008003-3-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> References: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add link_freq field to struct v4l2_mbus_config in order to pass the link frequency to the reciving sub-device. Signed-off-by: Sakari Ailus --- drivers/media/v4l2-core/v4l2-common.c | 13 +++++++++---- include/media/v4l2-mediabus.h | 2 ++ 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 7f69b5a025fa..09b26ce612e9 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -503,15 +503,20 @@ s64 __v4l2_get_link_freq_ctrl(struct v4l2_ctrl_handler *handler, EXPORT_SYMBOL_GPL(__v4l2_get_link_freq_ctrl); s64 __v4l2_get_link_freq_pad(struct media_pad *pad, unsigned int mul, - unsigned int div) + unsigned int div) { + struct v4l2_mbus_config mbus_config = {}; struct v4l2_subdev *sd; + int ret; sd = media_entity_to_v4l2_subdev(pad->entity); - if (!sd) - return -ENODEV; + ret = v4l2_subdev_call(sd, pad, get_mbus_config, pad->index, + &mbus_config); + if (ret < 0 && ret != -ENOIOCTLCMD) + return ret; - return __v4l2_get_link_freq_ctrl(sd->ctrl_handler, mul, div); + return mbus_config.link_freq ?: + __v4l2_get_link_freq_ctrl(sd->ctrl_handler, mul, div); } EXPORT_SYMBOL_GPL(__v4l2_get_link_freq_pad); diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h index 5bce6e423e94..2f39b52bb4d4 100644 --- a/include/media/v4l2-mediabus.h +++ b/include/media/v4l2-mediabus.h @@ -159,6 +159,7 @@ enum v4l2_mbus_type { * @bus.mipi_csi2: embedded &struct v4l2_mbus_config_mipi_csi2. * Used if the bus is MIPI Alliance's Camera Serial * Interface version 2 (MIPI CSI2). + * @link_freq: The link frequency. See also V4L2_CID_LINK_FREQ control. */ struct v4l2_mbus_config { enum v4l2_mbus_type type; @@ -167,6 +168,7 @@ struct v4l2_mbus_config { struct v4l2_mbus_config_mipi_csi1 mipi_csi1; struct v4l2_mbus_config_mipi_csi2 mipi_csi2; } bus; + u64 link_freq; }; /** From patchwork Mon Apr 29 19:08:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13647553 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC96113AD39 for ; Mon, 29 Apr 2024 19:09:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417742; cv=none; b=Ur+wQc2U/OYVselfjfUcJGSxtkqHJ6tTh2mDi+AvYVqAnwaL456FOUUkzLjGK/nBXq1ZR+7f7DCvaG9nc+FhgcUo0pqfueVMGnZuvZjnYXev3pMiL7hakzNPOYbHIKhkMMZBB/5n2/QL0LTiMC5JU/f/Wfhge99wFlve7RYc8z4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417742; c=relaxed/simple; bh=ieIzZg255XIGr0no7RsEtbUaifU3529HA23fgu8fC94=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=SaabEZe3sbe6+2MvuymNF+6EIBbpRZHPzst1a4PkkpqdY6hdlrLNgfSnth71m50o19+N4KcyDitHKKerbTagzIjDOd39SAcSfDUav0LbhCjTW6EbKzupeW/2YKeCepcp3f/FqWlfgM0dF/GzjYHoZnixwDovFAsJnnNQmLO2mA8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=bQki3VSQ; arc=none smtp.client-ip=198.175.65.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="bQki3VSQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714417740; x=1745953740; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ieIzZg255XIGr0no7RsEtbUaifU3529HA23fgu8fC94=; b=bQki3VSQY7UUdNHNRRlncaaD6TF+MEVnwZ3cRsPIcx67uaf+IPpVKwME yjUMZ1iQnLHIxby7I4ElDZs3CMmLR9upn6U9HTPwV8WqaOH/Mmt65jNdj NCKd9w5bcolCVE4wkoJeYRTPmpjVwBtooIS4G1kaH6QVaDBrrzXCSIjy1 y8rl21UCP1ba02foEZgR3q0/5P1oMYTuV2dMhDOeeu4A4sk05XoBvWwlu mgRQZfNtTJJCFvAhPQ69Zac/f/x0PoJE7tDW1vgaW75cEKlFMcC0SiQal SpLYURg2P6aDPqZ+6ZtVXfUQcTxnJQA6pdVN5LZuFlx+SH+1/eqtQCKbn Q==; X-CSE-ConnectionGUID: dcf/HQDRSBK5aUdTQkd+qg== X-CSE-MsgGUID: 3McIGSN0T8uTz/bt17JOJA== X-IronPort-AV: E=McAfee;i="6600,9927,11059"; a="13875335" X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="13875335" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:58 -0700 X-CSE-ConnectionGUID: PVv7t/9KQSqk0KupzFCdTg== X-CSE-MsgGUID: aHMGt/wGSMmZsqk5AKBVQg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="30846315" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:57 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id AB53F1205C0; Mon, 29 Apr 2024 22:08:54 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, Wentong Wu Subject: [PATCH v4 3/4] media: Documentation: Update link frequency driver documentation Date: Mon, 29 Apr 2024 22:08:51 +0300 Message-Id: <20240429190852.1008003-4-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> References: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add the get_mbus_config() as the means for conveying the link frequency towards the receiver drivers. Signed-off-by: Sakari Ailus --- Documentation/driver-api/media/tx-rx.rst | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/driver-api/media/tx-rx.rst b/Documentation/driver-api/media/tx-rx.rst index 29d66a47b56e..2f22a1534da9 100644 --- a/Documentation/driver-api/media/tx-rx.rst +++ b/Documentation/driver-api/media/tx-rx.rst @@ -49,6 +49,10 @@ Link frequency The :ref:`V4L2_CID_LINK_FREQ ` control is used to tell the receiver the frequency of the bus (i.e. it is not the same as the symbol rate). +For devices where the link frequency is read-only, the link_freq field of struct +v4l2_mbus_config is recommended over controls for conveying the link frequency +to the downstream driver in the pipeline. + ``.s_stream()`` callback ^^^^^^^^^^^^^^^^^^^^^^^^ From patchwork Mon Apr 29 19:08:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13647554 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C882213AD3E for ; Mon, 29 Apr 2024 19:09:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417742; cv=none; b=FdqS00/Jx6CUTexj1k5n0ZX3tFinaNl3miEofnGC1CS6XKeQAE57fnexypnQDjvUawDUyxJs6Gf3jZ6HKBOoJl0JXF0LFsdyU5/IAqE9ivktEQNbJ8owKGR6Ooe24hBrnku4baTCzvkM+c3qGnLEBOOirFkCKElb0QFpzfTfEj4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714417742; c=relaxed/simple; bh=hcn/dK50gEK/5NTqbgKwv0j7YOdfsDhvTka+TY7vCjY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=p/bTONcJ48rhGjf44/9yIsTZzGIsW/1X1u9fPPlVDLmwxPl59eobr3rHknJamiLVnrnSSTy9W8aPd0i8mAaZqvg0TT+0mA5aJ85tLia0tLFsq9W8EPHQW29lR+q+BeSLKzlDA77G+jYSMIRE5zxO7crAW+hRIjWhN+t76VoZTpc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ceUHpu+l; arc=none smtp.client-ip=198.175.65.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ceUHpu+l" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714417740; x=1745953740; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hcn/dK50gEK/5NTqbgKwv0j7YOdfsDhvTka+TY7vCjY=; b=ceUHpu+lLFOGuAxycqo/ggO9kPeg/DFUgwQPPgu3YEa68415Jt2jSB+N cquCOjjFk4GtXvYfdAeD2E3L/I1xviNeCt2QTORIKW9b8a+YhvGeEW2FW clPAaV9XEFe788lMMk2rLhWTqDBwG0gt6/1BQckG2kJv3yG3WuyShrQS7 M65SrUC7VzMJvgpX7EohYBwkFpIv38XLFvfpjCZqGn+tXk3Qp98GDPqs1 3HOrZW9p4i85Me+VZoU14RDjbNUr/vPz0i5RIyyt8jGTj2GkcxND33Nbn kOf8TSwhgC3+krwnTqKaolYxbR4uTRtuZgwMz2Eq9Ig1lfKHxpcyalxjb g==; X-CSE-ConnectionGUID: Y9Suf4TAQqy5/rtQyd0ysw== X-CSE-MsgGUID: +72u+mYmR0WBo0TmPMT75Q== X-IronPort-AV: E=McAfee;i="6600,9927,11059"; a="13875337" X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="13875337" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:58 -0700 X-CSE-ConnectionGUID: bELu+4JoTt2mJX9tXMEFDA== X-CSE-MsgGUID: W82YAFUDSQ+gAXc7eP1a3A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,240,1708416000"; d="scan'208";a="30846317" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2024 12:08:58 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 3EF13120624; Mon, 29 Apr 2024 22:08:55 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, Wentong Wu Subject: [PATCH v4 4/4] media: ivsc: csi: Obtain link frequency from the media pad Date: Mon, 29 Apr 2024 22:08:52 +0300 Message-Id: <20240429190852.1008003-5-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> References: <20240429190852.1008003-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Support the use of the media pad for obtaining the link frequency. Similarly, call the v4l2_get_link_freq() on the media pad, not on the remote's control handler. Signed-off-by: Sakari Ailus --- drivers/media/pci/intel/ivsc/mei_csi.c | 72 +++++++++----------------- 1 file changed, 25 insertions(+), 47 deletions(-) diff --git a/drivers/media/pci/intel/ivsc/mei_csi.c b/drivers/media/pci/intel/ivsc/mei_csi.c index 89b582a221ab..621a6ee32e01 100644 --- a/drivers/media/pci/intel/ivsc/mei_csi.c +++ b/drivers/media/pci/intel/ivsc/mei_csi.c @@ -35,8 +35,6 @@ #define MEI_CSI_ENTITY_NAME "Intel IVSC CSI" -#define MEI_CSI_LINK_FREQ_400MHZ 400000000ULL - /* the 5s used here is based on experiment */ #define CSI_CMD_TIMEOUT (5 * HZ) /* to setup CSI-2 link an extra delay needed and determined experimentally */ @@ -121,12 +119,11 @@ struct mei_csi { struct mutex lock; struct v4l2_subdev subdev; - struct v4l2_subdev *remote; + struct media_pad *remote; struct v4l2_async_notifier notifier; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *freq_ctrl; struct v4l2_ctrl *privacy_ctrl; - unsigned int remote_pad; /* start streaming or not */ int streaming; @@ -148,10 +145,6 @@ static const struct v4l2_mbus_framefmt mei_csi_format_mbus_default = { .field = V4L2_FIELD_NONE, }; -static s64 link_freq_menu_items[] = { - MEI_CSI_LINK_FREQ_400MHZ -}; - static inline struct mei_csi *notifier_to_csi(struct v4l2_async_notifier *n) { return container_of(n, struct mei_csi, notifier); @@ -284,11 +277,13 @@ static void mei_csi_rx(struct mei_cl_device *cldev) static int mei_csi_set_stream(struct v4l2_subdev *sd, int enable) { struct mei_csi *csi = sd_to_csi(sd); + struct v4l2_subdev *remote_sd = + media_entity_to_v4l2_subdev(csi->remote->entity); s64 freq; int ret; if (enable && csi->streaming == 0) { - freq = v4l2_get_link_freq(csi->remote->ctrl_handler, 0, 0); + freq = v4l2_get_link_freq(csi->remote, 0, 0); if (freq < 0) { dev_err(&csi->cldev->dev, "error %lld, invalid link_freq\n", freq); @@ -307,11 +302,11 @@ static int mei_csi_set_stream(struct v4l2_subdev *sd, int enable) if (ret < 0) goto err_switch; - ret = v4l2_subdev_call(csi->remote, video, s_stream, 1); + ret = v4l2_subdev_call(remote_sd, video, s_stream, 1); if (ret) goto err_switch; } else if (!enable && csi->streaming == 1) { - v4l2_subdev_call(csi->remote, video, s_stream, 0); + v4l2_subdev_call(remote_sd, video, s_stream, 0); /* switch CSI-2 link to IVSC */ ret = csi_set_link_owner(csi, CSI_LINK_IVSC); @@ -468,34 +463,29 @@ static int mei_csi_set_fmt(struct v4l2_subdev *sd, return 0; } -static int mei_csi_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +static int mei_csi_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad, + struct v4l2_mbus_config *mbus_config) { - struct mei_csi *csi = ctrl_to_csi(ctrl); + struct mei_csi *csi = sd_to_csi(sd); + unsigned int i; s64 freq; - if (ctrl->id == V4L2_CID_LINK_FREQ) { - if (!csi->remote) - return -EINVAL; - - freq = v4l2_get_link_freq(csi->remote->ctrl_handler, 0, 0); - if (freq < 0) { - dev_err(&csi->cldev->dev, - "error %lld, invalid link_freq\n", freq); - return -EINVAL; - } - - link_freq_menu_items[0] = freq; - ctrl->val = 0; + mbus_config->type = V4L2_MBUS_CSI2_DPHY; + for (i = 0; i < V4L2_MBUS_CSI2_MAX_DATA_LANES; i++) + mbus_config->bus.mipi_csi2.data_lanes[i] = i + 1; + mbus_config->bus.mipi_csi2.num_data_lanes = csi->nr_of_lanes; - return 0; + freq = v4l2_get_link_freq(csi->remote, 0, 0); + if (freq < 0) { + dev_err(&csi->cldev->dev, + "error %lld, invalid link_freq\n", freq); + return -EINVAL; } - return -EINVAL; -} + mbus_config->link_freq = csi->link_freq = freq; -static const struct v4l2_ctrl_ops mei_csi_ctrl_ops = { - .g_volatile_ctrl = mei_csi_g_volatile_ctrl, -}; + return 0; +} static const struct v4l2_subdev_video_ops mei_csi_video_ops = { .s_stream = mei_csi_set_stream, @@ -504,6 +494,7 @@ static const struct v4l2_subdev_video_ops mei_csi_video_ops = { static const struct v4l2_subdev_pad_ops mei_csi_pad_ops = { .get_fmt = v4l2_subdev_get_fmt, .set_fmt = mei_csi_set_fmt, + .get_mbus_config = mei_csi_get_mbus_config, }; static const struct v4l2_subdev_ops mei_csi_subdev_ops = { @@ -531,8 +522,7 @@ static int mei_csi_notify_bound(struct v4l2_async_notifier *notifier, if (pad < 0) return pad; - csi->remote = subdev; - csi->remote_pad = pad; + csi->remote = &subdev->entity.pads[pad]; return media_create_pad_link(&subdev->entity, pad, &csi->subdev.entity, CSI_PAD_SINK, @@ -556,26 +546,14 @@ static const struct v4l2_async_notifier_operations mei_csi_notify_ops = { static int mei_csi_init_controls(struct mei_csi *csi) { - u32 max; int ret; - ret = v4l2_ctrl_handler_init(&csi->ctrl_handler, 2); + ret = v4l2_ctrl_handler_init(&csi->ctrl_handler, 1); if (ret) return ret; csi->ctrl_handler.lock = &csi->lock; - max = ARRAY_SIZE(link_freq_menu_items) - 1; - csi->freq_ctrl = v4l2_ctrl_new_int_menu(&csi->ctrl_handler, - &mei_csi_ctrl_ops, - V4L2_CID_LINK_FREQ, - max, - 0, - link_freq_menu_items); - if (csi->freq_ctrl) - csi->freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY | - V4L2_CTRL_FLAG_VOLATILE; - csi->privacy_ctrl = v4l2_ctrl_new_std(&csi->ctrl_handler, NULL, V4L2_CID_PRIVACY, 0, 1, 1, 0); if (csi->privacy_ctrl)