linux-kernel - [PATCH 2/6 RESEND] media: mediatek: vcodec: Add debug params to control different log level

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Date:   Mon, 20 Mar 2023 18:28:34 +0800
From:   Yunfei Dong <yunfei.dong@...iatek.com>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>
CC:     Matthias Brugger <matthias.bgg@...il.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Steve Cho <stevecho@...omium.org>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH 2/6 RESEND] media: mediatek: vcodec: Add debug params to control different log level

Add parameter mtk_vcodec_dbg to open each codec log.
Add parameter mtk_v4l2_dbg_level to open each instance log according to
the parameter value.

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
 .../mediatek/vcodec/mtk_vcodec_dbgfs.c        |  3 +++
 .../mediatek/vcodec/mtk_vcodec_util.c         |  8 ++++++
 .../mediatek/vcodec/mtk_vcodec_util.h         | 25 ++++++++++++++++---
 3 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
index adf3f9133b0c..bef78c028a75 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
@@ -19,6 +19,9 @@ void mtk_vcodec_dbgfs_init(struct mtk_vcodec_dev *vcodec_dev)
 		pr_info("create dir err:%d\n", IS_ERR(vcodec_dev->dbgfs.vcodec_root));
 
 	vcodec_root = vcodec_dev->dbgfs.vcodec_root;
+
+	debugfs_create_x32("mtk_v4l2_dbg_level", 0644, vcodec_root, &mtk_v4l2_dbg_level);
+	debugfs_create_x32("mtk_vcodec_dbg", 0644, vcodec_root, &mtk_vcodec_dbg);
 }
 EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_init);
 
diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
index ace78c4b5b9e..f214e6f67005 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
@@ -13,6 +13,14 @@
 #include "mtk_vcodec_drv.h"
 #include "mtk_vcodec_util.h"
 
+#if defined(CONFIG_DEBUG_FS)
+int mtk_vcodec_dbg;
+EXPORT_SYMBOL(mtk_vcodec_dbg);
+
+int mtk_v4l2_dbg_level;
+EXPORT_SYMBOL(mtk_v4l2_dbg_level);
+#endif
+
 void __iomem *mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx *data,
 					unsigned int reg_idx)
 {
diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
index 71956627a0e2..938f03cab3c9 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
@@ -35,15 +35,34 @@ struct mtk_vcodec_dev;
 	pr_err("[MTK_VCODEC][ERROR][%d]: " fmt "\n",		\
 	       ((struct mtk_vcodec_ctx *)(h)->ctx)->id, ##args)
 
+#if defined(CONFIG_DEBUG_FS)
+extern int mtk_v4l2_dbg_level;
+extern int mtk_vcodec_dbg;
 
-#define mtk_v4l2_debug(level, fmt, args...) pr_debug(fmt, ##args)
+#define mtk_v4l2_debug(level, fmt, args...)				 \
+	do {								 \
+		if (mtk_v4l2_dbg_level >= level)			 \
+			pr_info("[MTK_V4L2] level=%d %s(),%d: " fmt "\n", \
+				level, __func__, __LINE__, ##args);	 \
+	} while (0)
 
-#define mtk_v4l2_debug_enter()  mtk_v4l2_debug(3, "+")
-#define mtk_v4l2_debug_leave()  mtk_v4l2_debug(3, "-")
+#define mtk_vcodec_debug(h, fmt, args...)				\
+	do {								\
+		if (mtk_vcodec_dbg)					\
+			pr_info("[MTK_VCODEC][%d]: %s() " fmt "\n",	\
+				((struct mtk_vcodec_ctx *)h->ctx)->id,  \
+				__func__, ##args);			\
+	} while (0)
+#else
+#define mtk_v4l2_debug(level, fmt, args...) pr_debug(fmt, ##args)
 
 #define mtk_vcodec_debug(h, fmt, args...)			\
 	pr_debug("[MTK_VCODEC][%d]: " fmt "\n",			\
 		((struct mtk_vcodec_ctx *)(h)->ctx)->id, ##args)
+#endif
+
+#define mtk_v4l2_debug_enter()  mtk_v4l2_debug(3, "+")
+#define mtk_v4l2_debug_leave()  mtk_v4l2_debug(3, "-")
 
 #define mtk_vcodec_debug_enter(h)  mtk_vcodec_debug(h, "+")
 #define mtk_vcodec_debug_leave(h)  mtk_vcodec_debug(h, "-")
-- 
2.25.1