From patchwork Tue Apr 30 10:39:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13648706 X-Patchwork-Delegate: kieran@bingham.xyz 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 1E9BD12C46C; Tue, 30 Apr 2024 10:40:32 +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=1714473633; cv=none; b=LYZf/dwpF59wEdrteZ97KlkcGppiyWjNep+0SfPWVHBy7VN7p8aO2dIgT7rN6BZ2pQXrDFUhyb/F76nikURC/2bFf1lyrLZlZWGOyh+lEE5CNP+11fBdOMphXvWlbcqAWqwJhN+lWfl/fgBoZY6srgRcO1Cv+bFiK+5YLeOPhBI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714473633; c=relaxed/simple; bh=0wPqnXtEORKe1fP3HANXwsrPx37xB92b/3pP29AbeB8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rsMIfcrZgfYB6lo01WSFURkqvp+4dT+0Cs7dEq9g2t2q4dxRM+e3h8RnI/7fMW9wU0cpoCFekj4nA/Wn/vCH8cFtwyNkIS8NVX4qjt3+N3FwWftwdD311Z0OILrcB3QPyPsTryXcVOwGCHbqM9d9TSa6Ha3NcnGO6TqQEsZcGcc= 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=VALTBKZm; 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="VALTBKZm" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 810CF2B09; Tue, 30 Apr 2024 12:39:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1714473562; bh=0wPqnXtEORKe1fP3HANXwsrPx37xB92b/3pP29AbeB8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VALTBKZmJDzEMAKd7Pqvc6C6tUpjfdxIAWcL6sCUIkD7Ww8o+oEE0YAMTj9cZGNSS IH23wOSImOGfTM/z9++het+vij1lIyLpYs7ulxQfrnfm/PusQIDDrrVqXA9wgPCYye XL3y24o/W+Y6FCcUJpC9kMzw/M9Fgif10OL9D1kU= From: Jacopo Mondi To: Laurent Pinchart , =?utf-8?q?Niklas_S?= =?utf-8?q?=C3=B6derlund?= , Sakari Ailus , Kieran Bingham , Tomi Valkeinen Cc: Jacopo Mondi , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH 12/19] media: max9286: Implement .get_frame_desc() Date: Tue, 30 Apr 2024 12:39:48 +0200 Message-ID: <20240430103956.60190-13-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240430103956.60190-1-jacopo.mondi@ideasonboard.com> References: <20240430103956.60190-1-jacopo.mondi@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Implement the .get_frame_desc() pad operation to allow the receiver to retrieve information on the multiplexed source pad. Record in the max9286_format_info structure the MIPI CSI-2 data type and use it to populate the frame_desc_entry. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/max9286.c | 120 ++++++++++++++++++++++++++++-------- 1 file changed, 95 insertions(+), 25 deletions(-) diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c index f203e4527257..4b4f4c03c10a 100644 --- a/drivers/media/i2c/max9286.c +++ b/drivers/media/i2c/max9286.c @@ -23,6 +23,7 @@ #include #include +#include #include #include #include @@ -145,7 +146,12 @@ struct max9286_format_info { u32 code; - u8 datatype; + /* The gmsl data format configuration. */ + u8 gmsl_dt; + /* The format bpp, used for stride calculation. */ + u8 bpp; + /* The Data Type identifier as defined by the MIPI CSI-2 standard. */ + u8 mipi_dt; }; struct max9286_i2c_speed { @@ -235,28 +241,44 @@ static inline struct max9286_priv *sd_to_max9286(struct v4l2_subdev *sd) static const struct max9286_format_info max9286_formats[] = { { .code = MEDIA_BUS_FMT_UYVY8_1X16, - .datatype = MAX9286_DATATYPE_YUV422_8BIT, + .gmsl_dt = MAX9286_DATATYPE_YUV422_8BIT, + .bpp = 16, + .mipi_dt = MIPI_CSI2_DT_YUV422_8B, }, { .code = MEDIA_BUS_FMT_VYUY8_1X16, - .datatype = MAX9286_DATATYPE_YUV422_8BIT, + .gmsl_dt = MAX9286_DATATYPE_YUV422_8BIT, + .bpp = 16, + .mipi_dt = MIPI_CSI2_DT_YUV422_8B, }, { .code = MEDIA_BUS_FMT_YUYV8_1X16, - .datatype = MAX9286_DATATYPE_YUV422_8BIT, + .gmsl_dt = MAX9286_DATATYPE_YUV422_8BIT, + .bpp = 16, + .mipi_dt = MIPI_CSI2_DT_YUV422_8B, }, { .code = MEDIA_BUS_FMT_YVYU8_1X16, - .datatype = MAX9286_DATATYPE_YUV422_8BIT, + .gmsl_dt = MAX9286_DATATYPE_YUV422_8BIT, + .bpp = 16, + .mipi_dt = MIPI_CSI2_DT_YUV422_8B, }, { .code = MEDIA_BUS_FMT_SBGGR12_1X12, - .datatype = MAX9286_DATATYPE_RAW12, + .gmsl_dt = MAX9286_DATATYPE_RAW12, + .bpp = 12, + .mipi_dt = MIPI_CSI2_DT_RAW12, }, { .code = MEDIA_BUS_FMT_SGBRG12_1X12, - .datatype = MAX9286_DATATYPE_RAW12, + .gmsl_dt = MAX9286_DATATYPE_RAW12, + .bpp = 12, + .mipi_dt = MIPI_CSI2_DT_RAW12, }, { .code = MEDIA_BUS_FMT_SGRBG12_1X12, - .datatype = MAX9286_DATATYPE_RAW12, + .gmsl_dt = MAX9286_DATATYPE_RAW12, + .bpp = 12, + .mipi_dt = MIPI_CSI2_DT_RAW12, }, { .code = MEDIA_BUS_FMT_SRGGB12_1X12, - .datatype = MAX9286_DATATYPE_RAW12, + .gmsl_dt = MAX9286_DATATYPE_RAW12, + .bpp = 12, + .mipi_dt = MIPI_CSI2_DT_RAW12, }, }; @@ -532,19 +554,23 @@ static int max9286_check_config_link(struct max9286_priv *priv, return 0; } +static const struct max9286_format_info * +max9286_get_format_info(unsigned int code) +{ + for (unsigned int i = 0; i < ARRAY_SIZE(max9286_formats); ++i) { + if (max9286_formats[i].code == code) + return &max9286_formats[i]; + } + + return NULL; +} + static void max9286_set_video_format(struct max9286_priv *priv, const struct v4l2_mbus_framefmt *format) { const struct max9286_format_info *info = NULL; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(max9286_formats); ++i) { - if (max9286_formats[i].code == format->code) { - info = &max9286_formats[i]; - break; - } - } + info = max9286_get_format_info(format->code); if (WARN_ON(!info)) return; @@ -559,7 +585,7 @@ static void max9286_set_video_format(struct max9286_priv *priv, /* Enable CSI-2 Lane D0-D3 only, DBL mode. */ max9286_write(priv, 0x12, MAX9286_CSIDBL | MAX9286_DBL | MAX9286_CSILANECNT(priv->csi2_data_lanes) | - info->datatype); + info->gmsl_dt); /* * Enable HS/VS encoding, use HS as line valid source, use D14/15 for @@ -900,7 +926,7 @@ static int max9286_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { - unsigned int i; + const struct max9286_format_info *info; /* * Disable setting format on the source pad: format is propagated @@ -910,12 +936,8 @@ static int max9286_set_fmt(struct v4l2_subdev *sd, return -EINVAL; /* Validate the format. */ - for (i = 0; i < ARRAY_SIZE(max9286_formats); ++i) { - if (max9286_formats[i].code == format->format.code) - break; - } - - if (i == ARRAY_SIZE(max9286_formats)) + info = max9286_get_format_info(format->format.code); + if (!info) format->format.code = max9286_formats[0].code; *v4l2_subdev_state_get_format(state, format->pad, 0) = format->format; @@ -930,6 +952,53 @@ static int max9286_set_fmt(struct v4l2_subdev *sd, return 0; } +static int max9286_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, + struct v4l2_mbus_frame_desc *fd) +{ + struct v4l2_subdev_route *route; + struct v4l2_subdev_state *state; + unsigned int num_routes = 0; + int ret = 0; + + if (pad != MAX9286_SRC_PAD) + return -EINVAL; + + state = v4l2_subdev_lock_and_get_active_state(sd); + for_each_active_route(&state->routing, route) { + struct v4l2_mbus_frame_desc_entry *entry; + const struct max9286_format_info *info; + struct v4l2_mbus_framefmt *fmt; + + fmt = v4l2_subdev_state_get_format(state, route->sink_pad, + route->sink_stream); + info = max9286_get_format_info(fmt->code); + if (WARN_ON(!info)) { + ret = -EINVAL; + goto err_unlock; + } + + entry = &fd->entry[num_routes]; + entry->stream = num_routes; + entry->flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; + entry->length = fmt->width * fmt->height * info->bpp / 8; + entry->pixelcode = fmt->code; + + /* VC is set according to link ordering, see register 0x15. */ + entry->bus.csi2.vc = route->sink_pad; + entry->bus.csi2.dt = info->mipi_dt; + + num_routes++; + } + + fd->num_entries = num_routes; + fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2; + +err_unlock: + v4l2_subdev_unlock_state(state); + + return ret; +} + static const struct v4l2_subdev_video_ops max9286_video_ops = { .s_stream = max9286_s_stream, }; @@ -940,6 +1009,7 @@ static const struct v4l2_subdev_pad_ops max9286_pad_ops = { .set_fmt = max9286_set_fmt, .get_frame_interval = v4l2_subdev_get_frame_interval, .set_frame_interval = max9286_set_frame_interval, + .get_frame_desc = max9286_get_frame_desc, }; static const struct v4l2_subdev_ops max9286_subdev_ops = {