[PATCH v5 02/10] media: aspeed: use v4l2_info/v4l2_warn/v4l2_dbg for log

Jammy Huang
2021-11-18T07:41:26Z

The debug log level, 0~3, is controlled by module_param, debug.
The higher the value, the more the information.
0: off
1: info
2: debug
3: register operations

Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
---
v5:
- no update
v4:
- no update
v3:
- update commit message
- update MODULE_PARM_DESC for debug
v2:
- use v4l2_xxx log rather than self-defined macro
---
drivers/media/platform/aspeed-video.c | 40 +++++++++++++++------------
1 file changed, 23 insertions(+), 17 deletions(-)

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index f5c40d6b4ece..6af57467b6d4 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -30,6 +30,7 @@
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-dma-contig.h>
+#include <linux/videodev2.h>

#define DEVICE_NAME "aspeed-video"

@@ -390,6 +391,8 @@ static const struct v4l2_dv_timings_cap aspeed_video_timings_cap = {
},
};

+static unsigned int debug;
+
static void aspeed_video_init_jpeg_table(u32 *table, bool yuv420)
{
int i;
@@ -437,23 +440,23 @@ static void aspeed_video_update(struct aspeed_video *video, u32 reg, u32 clear,
t &= ~clear;
t |= bits;
writel(t, video->base + reg);
- dev_dbg(video->dev, "update %03x[%08x -> %08x]\n", reg, before,
- readl(video->base + reg));
+ v4l2_dbg(3, debug, &video->v4l2_dev, "update %03x[%08x -> %08x]\n",
+ reg, before, readl(video->base + reg));
}

static u32 aspeed_video_read(struct aspeed_video *video, u32 reg)
{
u32 t = readl(video->base + reg);

- dev_dbg(video->dev, "read %03x[%08x]\n", reg, t);
+ v4l2_dbg(3, debug, &video->v4l2_dev, "read %03x[%08x]\n", reg, t);
return t;
}

static void aspeed_video_write(struct aspeed_video *video, u32 reg, u32 val)
{
writel(val, video->base + reg);
- dev_dbg(video->dev, "write %03x[%08x]\n", reg,
- readl(video->base + reg));
+ v4l2_dbg(3, debug, &video->v4l2_dev, "write %03x[%08x]\n", reg,
+ readl(video->base + reg));
}

static void update_perf(struct aspeed_video_perf *p)
@@ -474,13 +477,13 @@ static int aspeed_video_start_frame(struct aspeed_video *video)
u32 seq_ctrl = aspeed_video_read(video, VE_SEQ_CTRL);

if (video->v4l2_input_status) {
- dev_dbg(video->dev, "No signal; don't start frame\n");
+ v4l2_warn(&video->v4l2_dev, "No signal; don't start frame\n");
return 0;
}

if (!(seq_ctrl & VE_SEQ_CTRL_COMP_BUSY) ||
!(seq_ctrl & VE_SEQ_CTRL_CAP_BUSY)) {
- dev_dbg(video->dev, "Engine busy; don't start frame\n");
+ v4l2_warn(&video->v4l2_dev, "Engine busy; don't start frame\n");
return -EBUSY;
}

@@ -489,7 +492,7 @@ static int aspeed_video_start_frame(struct aspeed_video *video)
struct aspeed_video_buffer, link);
if (!buf) {
spin_unlock_irqrestore(&video->lock, flags);
- dev_dbg(video->dev, "No buffers; don't start frame\n");
+ v4l2_warn(&video->v4l2_dev, "No buffers; don't start frame\n");
return -EPROTO;
}

@@ -569,7 +572,7 @@ static void aspeed_video_bufs_done(struct aspeed_video *video,

static void aspeed_video_irq_res_change(struct aspeed_video *video, ulong delay)
{
- dev_dbg(video->dev, "Resolution changed; resetting\n");
+ v4l2_dbg(1, debug, &video->v4l2_dev, "Resolution changed; resetting\n");

set_bit(VIDEO_RES_CHANGE, &video->flags);
clear_bit(VIDEO_FRAME_INPRG, &video->flags);
@@ -770,8 +773,8 @@ static void aspeed_video_calc_compressed_size(struct aspeed_video *video,
aspeed_video_write(video, VE_STREAM_BUF_SIZE,
compression_buffer_size_reg);

- dev_dbg(video->dev, "Max compressed size: %x\n",
- video->max_compressed_size);
+ v4l2_dbg(1, debug, &video->v4l2_dev, "Max compressed size: %#x\n",
+ video->max_compressed_size);
}

#define res_check(v) test_and_clear_bit(VIDEO_MODE_DETECT_DONE, &(v)->flags)
@@ -808,7 +811,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
res_check(video),
MODE_DETECT_TIMEOUT);
if (!rc) {
- dev_dbg(video->dev, "Timed out; first mode detect\n");
+ v4l2_warn(&video->v4l2_dev, "Timed out; first mode detect\n");
clear_bit(VIDEO_RES_DETECT, &video->flags);
return;
}
@@ -822,7 +825,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
MODE_DETECT_TIMEOUT);
clear_bit(VIDEO_RES_DETECT, &video->flags);
if (!rc) {
- dev_dbg(video->dev, "Timed out; second mode detect\n");
+ v4l2_warn(&video->v4l2_dev, "Timed out; second mode detect\n");
return;
}

@@ -856,7 +859,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
} while (invalid_resolution && (tries++ < INVALID_RESOLUTION_RETRIES));

if (invalid_resolution) {
- dev_dbg(video->dev, "Invalid resolution detected\n");
+ v4l2_warn(&video->v4l2_dev, "Invalid resolution detected\n");
return;
}

@@ -873,8 +876,8 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
aspeed_video_update(video, VE_SEQ_CTRL, 0,
VE_SEQ_CTRL_AUTO_COMP | VE_SEQ_CTRL_EN_WATCHDOG);

- dev_dbg(video->dev, "Got resolution: %dx%d\n", det->width,
- det->height);
+ v4l2_dbg(1, debug, &video->v4l2_dev, "Got resolution: %dx%d\n",
+ det->width, det->height);
}

static void aspeed_video_set_resolution(struct aspeed_video *video)
@@ -1501,7 +1504,7 @@ static void aspeed_video_stop_streaming(struct vb2_queue *q)
!test_bit(VIDEO_FRAME_INPRG, &video->flags),
STOP_TIMEOUT);
if (!rc) {
- dev_dbg(video->dev, "Timed out when stopping streaming\n");
+ v4l2_warn(&video->v4l2_dev, "Timed out when stopping streaming\n");

/*
* Need to force stop any DMA and try and get HW into a good
@@ -1851,6 +1854,9 @@ static struct platform_driver aspeed_video_driver = {

module_platform_driver(aspeed_video_driver);

+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level (0=off,1=info,2=debug,3=reg ops)");
+
MODULE_DESCRIPTION("ASPEED Video Engine Driver");
MODULE_AUTHOR("Eddie James");
MODULE_LICENSE("GPL v2");
--
2.25.1