media: mtk-vcodec: Refactor vcodec pm interface

Using the needed params for pm init/release function and remove unused
param mtkdev in 'struct mtk_vcodec_pm'.
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Steve Cho <stevecho@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c

@@ -246,7 +246,7 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 	if (IS_ERR(dev->fw_handler))
 		return PTR_ERR(dev->fw_handler);
 
-	ret = mtk_vcodec_init_dec_pm(dev);
+	ret = mtk_vcodec_init_dec_pm(dev->plat_dev, &dev->pm);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to get mt vcodec clock source");
 		goto err_dec_pm;
@@ -377,7 +377,7 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 err_dec_alloc:
 	v4l2_device_unregister(&dev->v4l2_dev);
 err_res:
-	mtk_vcodec_release_dec_pm(dev);
+	mtk_vcodec_release_dec_pm(&dev->pm);
 err_dec_pm:
 	mtk_vcodec_fw_release(dev->fw_handler);
 	return ret;
@@ -416,7 +416,7 @@ static int mtk_vcodec_dec_remove(struct platform_device *pdev)
 		video_unregister_device(dev->vfd_dec);
 
 	v4l2_device_unregister(&dev->v4l2_dev);
-	mtk_vcodec_release_dec_pm(dev);
+	mtk_vcodec_release_dec_pm(&dev->pm);
 	mtk_vcodec_fw_release(dev->fw_handler);
 	return 0;
 }

drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c

@@ -13,18 +13,14 @@
 #include "mtk_vcodec_dec_pm.h"
 #include "mtk_vcodec_util.h"
 
-int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
+int mtk_vcodec_init_dec_pm(struct platform_device *pdev, struct mtk_vcodec_pm *pm)
 {
 	struct device_node *node;
-	struct platform_device *pdev;
-	struct mtk_vcodec_pm *pm;
+	struct platform_device *larb_pdev;
 	struct mtk_vcodec_clk *dec_clk;
 	struct mtk_vcodec_clk_info *clk_info;
 	int i = 0, ret = 0;
 
-	pdev = mtkdev->plat_dev;
-	pm = &mtkdev->pm;
-	pm->mtkdev = mtkdev;
 	dec_clk = &pm->vdec_clk;
 	node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
 	if (!node) {
@@ -32,13 +28,12 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
 		return -1;
 	}
 
-	pdev = of_find_device_by_node(node);
+	larb_pdev = of_find_device_by_node(node);
 	of_node_put(node);
-	if (WARN_ON(!pdev)) {
+	if (WARN_ON(!larb_pdev))
 		return -1;
-	}
-	pm->larbvdec = &pdev->dev;
-	pdev = mtkdev->plat_dev;
+
+	pm->larbvdec = &larb_pdev->dev;
 	pm->dev = &pdev->dev;
 
 	dec_clk->clk_num =
@@ -82,10 +77,10 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
 	return ret;
 }
 
-void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev)
+void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm)
 {
-	pm_runtime_disable(dev->pm.dev);
-	put_device(dev->pm.larbvdec);
+	pm_runtime_disable(pm->dev);
+	put_device(pm->larbvdec);
 }
 
 int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)

drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h

@@ -9,8 +9,8 @@
 
 #include "mtk_vcodec_drv.h"
 
-int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *dev);
-void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev);
+int mtk_vcodec_init_dec_pm(struct platform_device *pdev, struct mtk_vcodec_pm *pm);
+void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm);
 
 int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm);
 void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm);

drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h

@@ -195,7 +195,6 @@ struct mtk_vcodec_pm {
 	struct mtk_vcodec_clk	venc_clk;
 	struct device	*larbvenc;
 	struct device	*dev;
-	struct mtk_vcodec_dev	*mtkdev;
 };
 
 /**

drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c

@@ -26,7 +26,6 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
 	pdev = mtkdev->plat_dev;
 	pm = &mtkdev->pm;
 	memset(pm, 0, sizeof(struct mtk_vcodec_pm));
-	pm->mtkdev = mtkdev;
 	pm->dev = &pdev->dev;
 	dev = &pdev->dev;
 	enc_clk = &pm->venc_clk;