mtk-mipicsi: add debug message for mipicsi driver
This patch add debug message for mipicsi driver.
Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
diff --git a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
index aaaea5c..b291c95 100644
--- a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
+++ b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
@@ -25,6 +25,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/moduleparam.h>
+#include <linux/time64.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
@@ -109,6 +110,15 @@
#define notifier_to_mipicsi(n) container_of(n, struct mtk_mipicsi_dev, \
notifier)
+static int mtk_mipicsi_dbg_level;
+#define mtk_mipicsi_dbg(level, fmt, args...) \
+ do { \
+ if (mtk_mipicsi_dbg_level >= level) \
+ pr_info("[MTK_MIPICSI%d] L%d %s %d: " fmt "\n", \
+ mipicsi->id, level, __func__, __LINE__, \
+ ##args); \
+ } while (0)
+
/* buffer for one video frame */
struct mtk_mipicsi_buf {
struct list_head queue;
@@ -168,6 +178,8 @@
u8 link_reg_val;
char drv_name[16];
u32 id;
+ struct timespec64 fps_time_cur;
+ struct timespec64 fps_time_pre;
spinlock_t irqlock;
spinlock_t queue_lock;
@@ -535,6 +547,11 @@
buf->prepare_flag = 1;
buf->vb_dma_addr_phy =
vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ mtk_mipicsi_dbg(1, "vb_dma_addr_phy=%lx size=%d",
+ (unsigned long)buf->vb_dma_addr_phy,
+ vb->planes[0].bytesused);
+
buf->vb = vb;
}
@@ -581,6 +598,8 @@
mtk_mipicsi_write_camsv(mipicsi, vb->index, mipicsi->camsv_num);
spin_unlock(&mipicsi->irqlock);
+
+ mtk_mipicsi_dbg(2, "enqueue NO.%d buffer(%p).", vb->index, vb);
}
static void mtk_mipicsi_cmos_vf_enable(struct mtk_mipicsi_dev *mipicsi,
@@ -888,6 +907,7 @@
struct mtk_mipicsi_buf *tmp = NULL;
unsigned int index = 0;
unsigned int next = 0;
+ long time_interval;
for (i = 0; i < mipicsi->camsv_num; ++i)
ch[i].irq_status = false;
@@ -895,8 +915,10 @@
i = 0;
/* only one buffer left */
- if ((&(mipicsi->fb_list))->next->next == &(mipicsi->fb_list))
+ if ((&(mipicsi->fb_list))->next->next == &(mipicsi->fb_list)) {
+ mtk_mipicsi_dbg(1, "only 1 buffer left, drop frame");
return;
+ }
/*for each fb_lst 2 times to get the top 2 buffer.*/
list_for_each_entry_safe(new_cam_buf, tmp,
@@ -920,6 +942,21 @@
VB2_BUF_STATE_DONE);
list_del_init(&(mipicsi->cam_buf[index].queue));
+
+ if (mtk_mipicsi_dbg_level >= 2) {
+ ktime_get_real_ts64(&(mipicsi->fps_time_cur));
+
+ time_interval = (mipicsi->fps_time_cur.tv_sec
+ - mipicsi->fps_time_pre.tv_sec) * 1000000000
+ + (mipicsi->fps_time_cur.tv_nsec
+ - mipicsi->fps_time_pre.tv_nsec);
+ mtk_mipicsi_dbg(0, "time interval is %ld\n",
+ time_interval);
+ mipicsi->fps_time_pre.tv_sec =
+ mipicsi->fps_time_cur.tv_sec;
+ mipicsi->fps_time_pre.tv_nsec =
+ mipicsi->fps_time_cur.tv_nsec;
+ }
}
static irqreturn_t mtk_mipicsi_isr(int irq, void *data)
@@ -1575,5 +1612,6 @@
};
module_platform_driver(mtk_mipicsi_driver);
+module_param(mtk_mipicsi_dbg_level, int, 0644);
MODULE_DESCRIPTION("MediaTek SoC Camera Host driver");
MODULE_LICENSE("GPL v2");
