media: mediatek: vcodec: align fw interface

Align scp and vpu firmware interface, remove the depedency for
'struct mtk_vcodec_dev' and 'struct mtk_vcodec_ctx'. It will be
much easier to separate video encoder and decoder.
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw.c

@@ -5,15 +5,14 @@
 #include "mtk_vcodec_util.h"
 #include "mtk_vcodec_drv.h"
 
-struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
-					   enum mtk_vcodec_fw_type type,
+struct mtk_vcodec_fw *mtk_vcodec_fw_select(void *priv, enum mtk_vcodec_fw_type type,
 					   enum mtk_vcodec_fw_use fw_use)
 {
 	switch (type) {
 	case VPU:
-		return mtk_vcodec_fw_vpu_init(dev, fw_use);
+		return mtk_vcodec_fw_vpu_init(priv, fw_use);
 	case SCP:
-		return mtk_vcodec_fw_scp_init(dev);
+		return mtk_vcodec_fw_scp_init(priv, fw_use);
 	default:
 		mtk_v4l2_err("invalid vcodec fw type");
 		return ERR_PTR(-EINVAL);

drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw.h

@@ -25,8 +25,7 @@ struct mtk_vcodec_fw;
 typedef void (*mtk_vcodec_ipi_handler) (void *data,
 	unsigned int len, void *priv);
 
-struct mtk_vcodec_fw *mtk_vcodec_fw_select(struct mtk_vcodec_dev *dev,
-					   enum mtk_vcodec_fw_type type,
+struct mtk_vcodec_fw *mtk_vcodec_fw_select(void *priv, enum mtk_vcodec_fw_type type,
 					   enum mtk_vcodec_fw_use fw_use);
 void mtk_vcodec_fw_release(struct mtk_vcodec_fw *fw);
 

drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw_priv.h

@@ -12,6 +12,7 @@ struct mtk_vcodec_fw {
 	const struct mtk_vcodec_fw_ops *ops;
 	struct platform_device *pdev;
 	struct mtk_scp *scp;
+	enum mtk_vcodec_fw_use fw_use;
 };
 
 struct mtk_vcodec_fw_ops {
@@ -28,22 +29,20 @@ struct mtk_vcodec_fw_ops {
 };
 
 #if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VCODEC_VPU)
-struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev,
-					     enum mtk_vcodec_fw_use fw_use);
+struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(void *priv, enum mtk_vcodec_fw_use fw_use);
 #else
 static inline struct mtk_vcodec_fw *
-mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev,
-		       enum mtk_vcodec_fw_use fw_use)
+mtk_vcodec_fw_vpu_init(void *priv, enum mtk_vcodec_fw_use fw_use)
 {
 	return ERR_PTR(-ENODEV);
 }
 #endif /* CONFIG_VIDEO_MEDIATEK_VCODEC_VPU */
 
 #if IS_ENABLED(CONFIG_VIDEO_MEDIATEK_VCODEC_SCP)
-struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(struct mtk_vcodec_dev *dev);
+struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(void *priv, enum mtk_vcodec_fw_use fw_use);
 #else
 static inline struct mtk_vcodec_fw *
-mtk_vcodec_fw_scp_init(struct mtk_vcodec_dev *dev)
+mtk_vcodec_fw_scp_init(void *priv, enum mtk_vcodec_fw_use fw_use)
 {
 	return ERR_PTR(-ENODEV);
 }

drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw_scp.c

@@ -53,18 +53,21 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_rproc_msg = {
 	.release = mtk_vcodec_scp_release,
 };
 
-struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(struct mtk_vcodec_dev *dev)
+struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(void *priv, enum mtk_vcodec_fw_use fw_use)
 {
 	struct mtk_vcodec_fw *fw;
+	struct mtk_vcodec_dev *dev = priv;
+	struct platform_device *plat_dev;
 	struct mtk_scp *scp;
 
-	scp = scp_get(dev->plat_dev);
+	plat_dev = dev->plat_dev;
+	scp = scp_get(plat_dev);
 	if (!scp) {
 		mtk_v4l2_err("could not get vdec scp handle");
 		return ERR_PTR(-EPROBE_DEFER);
 	}
 
-	fw = devm_kzalloc(&dev->plat_dev->dev, sizeof(*fw), GFP_KERNEL);
+	fw = devm_kzalloc(&plat_dev->dev, sizeof(*fw), GFP_KERNEL);
 	fw->type = SCP;
 	fw->ops = &mtk_vcodec_rproc_msg;
 	fw->scp = scp;

drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw_vpu.c

@@ -77,10 +77,11 @@ static const struct mtk_vcodec_fw_ops mtk_vcodec_vpu_msg = {
 	.release = mtk_vcodec_vpu_release,
 };
 
-struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev,
-					     enum mtk_vcodec_fw_use fw_use)
+struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(void *priv, enum mtk_vcodec_fw_use fw_use)
 {
 	struct platform_device *fw_pdev;
+	struct mtk_vcodec_dev *dev = priv;
+	struct platform_device *plat_dev;
 	struct mtk_vcodec_fw *fw;
 	enum rst_id rst_id;
 
@@ -94,19 +95,22 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev,
 		break;
 	}
 
-	fw_pdev = vpu_get_plat_device(dev->plat_dev);
+	plat_dev = dev->plat_dev;
+	fw_pdev = vpu_get_plat_device(plat_dev);
 	if (!fw_pdev) {
 		mtk_v4l2_err("firmware device is not ready");
 		return ERR_PTR(-EINVAL);
 	}
+
 	vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_vpu_reset_handler, dev, rst_id);
 
-	fw = devm_kzalloc(&dev->plat_dev->dev, sizeof(*fw), GFP_KERNEL);
+	fw = devm_kzalloc(&plat_dev->dev, sizeof(*fw), GFP_KERNEL);
 	if (!fw)
 		return ERR_PTR(-ENOMEM);
 	fw->type = VPU;
 	fw->ops = &mtk_vcodec_vpu_msg;
 	fw->pdev = fw_pdev;
+	fw->fw_use = fw_use;
 
 	return fw;
 }