From nobody Fri Dec 19 16:23:46 2025 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 055A7226CEF; Fri, 23 May 2025 10:07:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747994879; cv=none; b=nwDbigptmR29I4s1H+8AY8EXtUC2v6bScAAOmtHYfSXsQEbJ/Y5lzAH3xyW6ATF6TkX9/CmaKTw6Zt9fgeeI0mfzSkiEUjvsfs+SfXOtLomgAEH+g3YpVpzFJ+V/qLd3ZfdGvx1arxsgiSg2pZ9LjVy4g6WkJ+w4wdv6QKtxfOU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747994879; c=relaxed/simple; bh=2/Y1xbcobWL0d7jO2OsWfYtpGcl8fieyGac7/05r3nY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=M9z9bM4MSmf38T9DRB3uMkXEYXxuBg0yVngUSlb0SCP81wiS6pUqQCW7hT1+uYDFnqXJoUllO4uuX3NmJ4EBM45z6Py+kSQVrotd95154fgJ0lxKDuIsgQPGWjFu/rbOK0oZGrLGc1Gp4PAu3rdPeeOUcYwJvYxHIGXlUHrJ+Oc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=WsC/5w+J; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="WsC/5w+J" Received: from ideasonboard.com (unknown [IPv6:2a00:6020:448c:6c00:a882:21a2:2327:ac4f]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 673DC6B5; Fri, 23 May 2025 12:07:33 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1747994853; bh=2/Y1xbcobWL0d7jO2OsWfYtpGcl8fieyGac7/05r3nY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=WsC/5w+JvK8nUyw0HBzTjRRRNKg+S414OaxCPTPDA5/NpCIAkEJOTO4MK8j4gevdo xiwPjdtZI5eWx8wb3qAuJACDc3I15LQBXWjkTuLLi88pN4Y9DFdR9O4LdZOc3zdnX4 e7REo727KJb4y6AQ1y3SoBHiMIgB5utEHY052yrg= From: Stefan Klug Date: Fri, 23 May 2025 12:07:31 +0200 Subject: [PATCH v2 1/2] media: rkisp1: Add RKISP1_CID_SUPPORTED_PARAMS_BLOCKS control Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250523-supported-params-and-wdr-v2-1-5a88dca5f420@ideasonboard.com> References: <20250523-supported-params-and-wdr-v2-0-5a88dca5f420@ideasonboard.com> In-Reply-To: <20250523-supported-params-and-wdr-v2-0-5a88dca5f420@ideasonboard.com> To: Dafna Hirschfeld , Laurent Pinchart , Mauro Carvalho Chehab , Heiko Stuebner Cc: linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stefan Klug , Paul Elder X-Mailer: b4 0.13.0 Add a RKISP1_CID_SUPPORTED_PARAMS_BLOCKS V4L2 control to be able to query the parameters blocks supported by the current kernel on the current hardware from user space. As a drive-by fix handle an (very unlikely) error in rkisp1_params_init_vb2_queue(). Signed-off-by: Stefan Klug Reviewed-by: Paul Elder --- Changes in v2: - Added docs improvements from review - Moved ctrl_config declaration to top - Moved rkisp1_params_init_vb2_queue() return check into this patch as the previous patch got dropped - Call rkisp1_ctrl_init() after media_entity_pads_init() for easier error handling --- .../media/platform/rockchip/rkisp1/rkisp1-common.h | 2 + .../media/platform/rockchip/rkisp1/rkisp1-params.c | 57 ++++++++++++++++++= ++-- include/uapi/linux/rkisp1-config.h | 9 ++++ include/uapi/linux/v4l2-controls.h | 6 +++ 4 files changed, 70 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drive= rs/media/platform/rockchip/rkisp1/rkisp1-common.h index ca952fd0829b..5f187f9efc7b 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h @@ -415,6 +415,8 @@ struct rkisp1_params { spinlock_t config_lock; /* locks the buffers list 'params' */ struct list_head params; =20 + struct v4l2_ctrl_handler ctrls; + const struct v4l2_meta_format *metafmt; =20 enum v4l2_quantization quantization; diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c b/drive= rs/media/platform/rockchip/rkisp1/rkisp1-params.c index b28f4140c8a3..b276926beb3c 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c @@ -2736,6 +2736,44 @@ static int rkisp1_params_init_vb2_queue(struct vb2_q= ueue *q, return vb2_queue_init(q); } =20 +static int rkisp1_ctrl_init(struct rkisp1_params *params) +{ + struct v4l2_ctrl_config ctrl_config =3D { + .id =3D RKISP1_CID_SUPPORTED_PARAMS_BLOCKS, + .name =3D "Supported Params Blocks", + .type =3D V4L2_CTRL_TYPE_BITMASK, + .flags =3D V4L2_CTRL_FLAG_READ_ONLY, + }; + int ret; + + v4l2_ctrl_handler_init(¶ms->ctrls, 1); + + for (unsigned int i =3D 0; i < ARRAY_SIZE(rkisp1_ext_params_handlers); i+= +) { + const struct rkisp1_ext_params_handler *block_handler; + + block_handler =3D &rkisp1_ext_params_handlers[i]; + ctrl_config.max |=3D BIT(i); + + if ((params->rkisp1->info->features & block_handler->features) !=3D + block_handler->features) + continue; + + ctrl_config.def |=3D BIT(i); + } + + v4l2_ctrl_new_custom(¶ms->ctrls, &ctrl_config, NULL); + + params->vnode.vdev.ctrl_handler =3D ¶ms->ctrls; + + if (params->ctrls.error) { + ret =3D params->ctrls.error; + v4l2_ctrl_handler_free(¶ms->ctrls); + return ret; + } + + return 0; +} + int rkisp1_params_register(struct rkisp1_device *rkisp1) { struct rkisp1_params *params =3D &rkisp1->params; @@ -2763,7 +2801,9 @@ int rkisp1_params_register(struct rkisp1_device *rkis= p1) vdev->queue =3D &node->buf_queue; vdev->device_caps =3D V4L2_CAP_STREAMING | V4L2_CAP_META_OUTPUT; vdev->vfl_dir =3D VFL_DIR_TX; - rkisp1_params_init_vb2_queue(vdev->queue, params); + ret =3D rkisp1_params_init_vb2_queue(vdev->queue, params); + if (ret) + goto err_media; =20 params->metafmt =3D &rkisp1_params_formats[RKISP1_PARAMS_FIXED]; =20 @@ -2777,18 +2817,26 @@ int rkisp1_params_register(struct rkisp1_device *rk= isp1) node->pad.flags =3D MEDIA_PAD_FL_SOURCE; ret =3D media_entity_pads_init(&vdev->entity, 1, &node->pad); if (ret) - goto error; + goto err_media; + + ret =3D rkisp1_ctrl_init(params); + if (ret) { + dev_err(rkisp1->dev, "Control initialization error %d\n", ret); + goto err_media; + } =20 ret =3D video_register_device(vdev, VFL_TYPE_VIDEO, -1); if (ret) { dev_err(rkisp1->dev, "failed to register %s, ret=3D%d\n", vdev->name, ret); - goto error; + goto err_ctrl; } =20 return 0; =20 -error: +err_ctrl: + v4l2_ctrl_handler_free(¶ms->ctrls); +err_media: media_entity_cleanup(&vdev->entity); mutex_destroy(&node->vlock); return ret; @@ -2804,6 +2852,7 @@ void rkisp1_params_unregister(struct rkisp1_device *r= kisp1) return; =20 vb2_video_unregister_device(vdev); + v4l2_ctrl_handler_free(¶ms->ctrls); media_entity_cleanup(&vdev->entity); mutex_destroy(&node->vlock); } diff --git a/include/uapi/linux/rkisp1-config.h b/include/uapi/linux/rkisp1= -config.h index 2d995f3c1ca3..85c1b02f3f78 100644 --- a/include/uapi/linux/rkisp1-config.h +++ b/include/uapi/linux/rkisp1-config.h @@ -1086,6 +1086,9 @@ enum rkisp1_ext_params_block_type { #define RKISP1_EXT_PARAMS_FL_BLOCK_DISABLE (1U << 0) #define RKISP1_EXT_PARAMS_FL_BLOCK_ENABLE (1U << 1) =20 +/* A bitmask of parameters blocks supported on the current hardware. */ +#define RKISP1_CID_SUPPORTED_PARAMS_BLOCKS (V4L2_CID_USER_RKISP1_BASE + 0x= 01) + /** * struct rkisp1_ext_params_block_header - RkISP1 extensible parameters bl= ock * header @@ -1520,6 +1523,12 @@ enum rksip1_ext_param_buffer_version { * V4L2 control. If such control is not available, userspace should assume= only * RKISP1_EXT_PARAM_BUFFER_V1 is supported by the driver. * + * The read-only V4L2 control ``RKISP1_CID_SUPPORTED_PARAMS_BLOCKS`` can b= e used + * to query the blocks supported by the device. It contains a bitmask wher= e each + * bit represents the availability of the corresponding entry from the + * :c:type:`rkisp1_ext_params_block_type` enum. The max value of the contr= ol + * represents the blocks supported by the kernel (independent of the devic= e). + * * For each ISP block that userspace wants to configure, a block-specific * structure is appended to the @data buffer, one after the other without = gaps * in between nor overlaps. Userspace shall populate the @data_size field = with diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-c= ontrols.h index 72e32814ea83..f836512e9deb 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -222,6 +222,12 @@ enum v4l2_colorfx { */ #define V4L2_CID_USER_UVC_BASE (V4L2_CID_USER_BASE + 0x11e0) =20 +/* + * The base for Rockchip ISP1 driver controls. + * We reserve 16 controls for this driver. + */ +#define V4L2_CID_USER_RKISP1_BASE (V4L2_CID_USER_BASE + 0x1220) + /* MPEG-class control IDs */ /* The MPEG controls are applicable to all codec controls * and the 'MPEG' part of the define is historical */ --=20 2.43.0