From patchwork Fri May 3 15:51:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 794548 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 BB0ED15531C; Fri, 3 May 2024 15:51:58 +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=1714751521; cv=none; b=nAfr2/o9sDIqtWFOYPhNksLb3XtNqtZiFTgd2Wc6JvgAOtJHODBQs00EEjsWd53jirydVBUvUtNjVrW2dssLYMIy2uKFhivpCcEIuCbaSqVhT3QnGLAbv38//IkhlW1OS0LN+5F/wCkXPSxyOVKLUzoBAnSr63KjrLhIrD0OoXg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714751521; c=relaxed/simple; bh=Gz0M0nqu3yOklZsJk36xaRu/xXa/Ykg3VGSD0UemLes=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M4QB6AJ+qyMSKLcMAwEguCrVoaIwn0Qwd+4Hm7IXeSQoMM6LeAobBhDW24fvzdrsGVUBx4ruPB9faJFophmJYyZ2+ge5wb4B+spODaeDBnElvqSvPZDuO/787Qpj7adbRXPX4iHCqfydmV/LpclyBrePjjHyW8WmKplLG4Q0PJA= 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=paMS8LEE; 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="paMS8LEE" Received: from localhost.localdomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 485162B62; Fri, 3 May 2024 17:50:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1714751452; bh=Gz0M0nqu3yOklZsJk36xaRu/xXa/Ykg3VGSD0UemLes=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=paMS8LEEZTCgCa8YIFgEC99l9AiDXIeWl2Q6GRXrMOxhQ7NDA6SpdKPw5N/yw2+Fz fjTxIPxa+m3kNTNubxMzzDGky4XNkO40ddSBfBo0SNAGT8NdOocoXZG2feJRe7jOWj 0OZ8oY+JDF9/AoYfryAt/zwDZWW76HVzMA5yLnko= 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 07/11] media: adv748x-csi2: Validate the image format Date: Fri, 3 May 2024 17:51:22 +0200 Message-ID: <20240503155127.105235-8-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240503155127.105235-1-jacopo.mondi@ideasonboard.com> References: <20240503155127.105235-1-jacopo.mondi@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The adv748x-csi2 driver configures the CSI-2 transmitter to automatically infer the image stream format from the connected frontend (HDMI or AFE). Setting a new format on the subdevice hence does not actually control the CSI-2 output format, but it's only there for the purpose of pipeline validation. However, there is currently no validation that the supplied media bus code is valid and supported by the device. With the introduction of enum_mbus_codes a list of supported format is now available, use it to validate that the supplied format is correct and use the default YUYV8 one if that's not the case. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/adv748x/adv748x-csi2.c | 27 +++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c index 219417b319a6..1aae6467ca62 100644 --- a/drivers/media/i2c/adv748x/adv748x-csi2.c +++ b/drivers/media/i2c/adv748x/adv748x-csi2.c @@ -215,6 +215,23 @@ static int adv748x_csi2_get_format(struct v4l2_subdev *sd, return 0; } +static int adv748x_csi2_is_fmt_supported(struct adv748x_csi2 *tx, + unsigned int code) +{ + const unsigned int *codes = is_txa(tx) ? + adv748x_csi2_txa_fmts : + adv748x_csi2_txb_fmts; + size_t num_fmts = is_txa(tx) ? ARRAY_SIZE(adv748x_csi2_txa_fmts) + : ARRAY_SIZE(adv748x_csi2_txb_fmts); + + for (unsigned int i = 0; i < num_fmts; i++) { + if (codes[i] == code) + return 0; + } + + return -EINVAL; +} + static int adv748x_csi2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *sdformat) @@ -222,7 +239,15 @@ static int adv748x_csi2_set_format(struct v4l2_subdev *sd, struct adv748x_csi2 *tx = adv748x_sd_to_csi2(sd); struct adv748x_state *state = tx->state; struct v4l2_mbus_framefmt *mbusformat; - int ret = 0; + int ret; + + /* + * Make sure the format is supported, if not default it to + * YUYV8 as it's supported by both TXes. + */ + ret = adv748x_csi2_is_fmt_supported(tx, sdformat->format.code); + if (ret) + sdformat->format.code = MEDIA_BUS_FMT_YUYV8_1X16; mbusformat = adv748x_csi2_get_pad_format(sd, sd_state, sdformat->pad, sdformat->which);