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Date:   Sun, 17 Oct 2021 13:08:17 +0200
From:   Dorota Czaplejewicz <dorota.czaplejewicz@...i.sm>
To:     Steve Longerbeam <slongerbeam@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...i.sm, phone-devel@...r.kernel.org
Subject: [PATCHv2 2/4] media: imx: Store the type of hardware implementation

The driver covers i.MX5/6, as well as i.MX7/8 hardware.
Those implementations differ, e.g. in the sizes of buffers they accept.

Some functionality should be abstracted, and storing type achieves that.

Signed-off-by: Dorota Czaplejewicz <dorota.czaplejewicz@...i.sm>
---
 drivers/staging/media/imx/imx-ic-prpencvf.c   | 3 ++-
 drivers/staging/media/imx/imx-media-capture.c | 5 ++++-
 drivers/staging/media/imx/imx-media-csi.c     | 3 ++-
 drivers/staging/media/imx/imx-media.h         | 8 +++++++-
 drivers/staging/media/imx/imx7-media-csi.c    | 3 ++-
 5 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index d990553de87b..e06f5fbe5174 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
@@ -1265,7 +1265,8 @@ static int prp_registered(struct v4l2_subdev *sd)
 
 	priv->vdev = imx_media_capture_device_init(ic_priv->ipu_dev,
 						   &ic_priv->sd,
-						   PRPENCVF_SRC_PAD, true);
+						   PRPENCVF_SRC_PAD, true,
+						   DEVICE_TYPE_IMX56);
 	if (IS_ERR(priv->vdev))
 		return PTR_ERR(priv->vdev);
 
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index 93ba09236010..fdf0f3a8f253 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -34,6 +34,7 @@ struct capture_priv {
 
 	struct imx_media_video_dev vdev;	/* Video device */
 	struct media_pad vdev_pad;		/* Video device pad */
+	enum imx_device_type type;		/* Type of hardware implementation */
 
 	struct v4l2_subdev *src_sd;		/* Source subdev */
 	int src_sd_pad;				/* Source subdev pad */
@@ -957,7 +958,8 @@ EXPORT_SYMBOL_GPL(imx_media_capture_device_unregister);
 
 struct imx_media_video_dev *
 imx_media_capture_device_init(struct device *dev, struct v4l2_subdev *src_sd,
-			      int pad, bool legacy_api)
+			      int pad, bool legacy_api,
+			      enum imx_device_type type)
 {
 	struct capture_priv *priv;
 	struct video_device *vfd;
@@ -972,6 +974,7 @@ imx_media_capture_device_init(struct device *dev, struct v4l2_subdev *src_sd,
 	priv->src_sd_pad = pad;
 	priv->dev = dev;
 	priv->legacy_api = legacy_api;
+	priv->type = type;
 
 	mutex_init(&priv->mutex);
 	INIT_LIST_HEAD(&priv->ready_q);
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 6a94fff49bf6..b6758c3787c7 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -1794,7 +1794,8 @@ static int csi_registered(struct v4l2_subdev *sd)
 	}
 
 	priv->vdev = imx_media_capture_device_init(priv->sd.dev, &priv->sd,
-						   CSI_SRC_PAD_IDMAC, true);
+						   CSI_SRC_PAD_IDMAC, true,
+						   DEVICE_TYPE_IMX56);
 	if (IS_ERR(priv->vdev)) {
 		ret = PTR_ERR(priv->vdev);
 		goto free_fim;
diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
index d2a150aac6cd..2bacfb96da85 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h
@@ -96,6 +96,11 @@ enum imx_pixfmt_sel {
 	PIXFMT_SEL_ANY = PIXFMT_SEL_YUV | PIXFMT_SEL_RGB | PIXFMT_SEL_BAYER,
 };
 
+enum imx_device_type {
+	DEVICE_TYPE_IMX56,
+	DEVICE_TYPE_IMX78,
+};
+
 struct imx_media_buffer {
 	struct vb2_v4l2_buffer vbuf; /* v4l buffer must be first */
 	struct list_head  list;
@@ -282,7 +287,8 @@ int imx_media_ic_unregister(struct v4l2_subdev *sd);
 /* imx-media-capture.c */
 struct imx_media_video_dev *
 imx_media_capture_device_init(struct device *dev, struct v4l2_subdev *src_sd,
-			      int pad, bool legacy_api);
+			      int pad, bool legacy_api,
+			      enum imx_device_type type);
 void imx_media_capture_device_remove(struct imx_media_video_dev *vdev);
 int imx_media_capture_device_register(struct imx_media_video_dev *vdev,
 				      u32 link_flags);
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index d7dc0d8edf50..1a11f07620e9 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -1012,7 +1012,8 @@ static int imx7_csi_registered(struct v4l2_subdev *sd)
 	}
 
 	csi->vdev = imx_media_capture_device_init(csi->sd.dev, &csi->sd,
-						  IMX7_CSI_PAD_SRC, false);
+						  IMX7_CSI_PAD_SRC, false,
+						  DEVICE_TYPE_IMX78);
 	if (IS_ERR(csi->vdev))
 		return PTR_ERR(csi->vdev);
 
-- 
2.31.1


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