linux-kernel - [PATCH v6,2/8] media: mediatek: vcodec: Add debug params to control different log level

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Message-ID: <20230530122908.19267-3-yunfei.dong@mediatek.com>
Date:   Tue, 30 May 2023 20:29:02 +0800
From:   Yunfei Dong <yunfei.dong@...iatek.com>
To:     Chen-Yu Tsai <wenst@...omium.org>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        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>, Nathan Hebert <nhebert@...omium.org>
CC:     Yunfei Dong <yunfei.dong@...iatek.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 v6,2/8] 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>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 .../mediatek/vcodec/mtk_vcodec_dbgfs.c        |  2 ++
 .../mediatek/vcodec/mtk_vcodec_util.c         |  8 ++++++
 .../mediatek/vcodec/mtk_vcodec_util.h         | 26 ++++++++++++++++---
 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 fb9edd379af5..b5093e4e4aa2 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
@@ -20,6 +20,8 @@ void mtk_vcodec_dbgfs_init(struct mtk_vcodec_dev *vcodec_dev)
 			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..587aa817e7f4 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
@@ -35,15 +35,35 @@ 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_debug("[MTK_V4L2] %s, %d: " fmt "\n",        \
+				 __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)					                      \
+			dev_dbg(&(((struct mtk_vcodec_ctx *)(h)->ctx)->dev->plat_dev->dev),   \
+				"[MTK_VCODEC][%d]: %s, %d " fmt "\n",                         \
+				((struct mtk_vcodec_ctx *)(h)->ctx)->id,                      \
+				__func__, __LINE__, ##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, "-")
-- 
2.18.0