[media] coda: Add tracing support
This patch adds tracepoints to the coda driver that can be used together
with the v4l2:v4l2_qbuf and v4l2:v4l2_dqbuf tracepoints to to follow video
frames through the mem2mem device.
For encoding with the BIT processor:
coda:coda_enc_pic_run
coda:coda_enc_pic_done
For decoding with the BIT processor:
coda:coda_bit_queue
coda:coda_dec_pic_run
coda:coda_dec_pic_done
coda:coda_dec_rot_done
Additionally, two low level tracepoints register whenever the BIT processor
is started and returns:
coda:coda_bit_run
coda:coda_bit_done
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index d336cb6..d043007 100644
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -30,6 +30,8 @@
#include <media/videobuf2-vmalloc.h>
#include "coda.h"
+#define CREATE_TRACE_POINTS
+#include "trace.h"
#define CODA_PARA_BUF_SIZE (10 * 1024)
#define CODA7_PS_BUF_SIZE 0x28000
@@ -88,15 +90,21 @@
coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD);
coda_write(dev, ctx->params.codec_mode_aux, CODA7_REG_BIT_RUN_AUX_STD);
+ trace_coda_bit_run(ctx, cmd);
+
coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND);
}
static int coda_command_sync(struct coda_ctx *ctx, int cmd)
{
struct coda_dev *dev = ctx->dev;
+ int ret;
coda_command_async(ctx, cmd);
- return coda_wait_timeout(dev);
+ ret = coda_wait_timeout(dev);
+ trace_coda_bit_done(ctx);
+
+ return ret;
}
int coda_hw_reset(struct coda_ctx *ctx)
@@ -265,6 +273,8 @@
ctx->bitstream_fifo.kfifo.mask;
list_add_tail(&meta->list,
&ctx->buffer_meta_list);
+
+ trace_coda_bit_queue(ctx, src_buf, meta);
}
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
@@ -1240,6 +1250,8 @@
coda_write(dev, ctx->iram_info.axi_sram_use,
CODA7_REG_BIT_AXI_SRAM_USE);
+ trace_coda_enc_pic_run(ctx, src_buf);
+
coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
return 0;
@@ -1254,6 +1266,8 @@
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ trace_coda_enc_pic_done(ctx, dst_buf);
+
/* Get results from the coda */
start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START);
wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
@@ -1743,6 +1757,8 @@
/* Clear decode success flag */
coda_write(dev, 0, CODA_RET_DEC_PIC_SUCCESS);
+ trace_coda_dec_pic_run(ctx, meta);
+
coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
return 0;
@@ -1903,6 +1919,8 @@
}
mutex_unlock(&ctx->bitstream_mutex);
+ trace_coda_dec_pic_done(ctx, &ctx->frame_metas[decoded_idx]);
+
val = coda_read(dev, CODA_RET_DEC_PIC_TYPE) & 0x7;
if (val == 0)
ctx->frame_types[decoded_idx] = V4L2_BUF_FLAG_KEYFRAME;
@@ -1942,6 +1960,8 @@
dst_buf->v4l2_buf.timecode = meta->timecode;
dst_buf->v4l2_buf.timestamp = meta->timestamp;
+ trace_coda_dec_rot_done(ctx, meta, dst_buf);
+
switch (q_data_dst->fourcc) {
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420:
@@ -2000,6 +2020,8 @@
return IRQ_HANDLED;
}
+ trace_coda_bit_done(ctx);
+
if (ctx->aborting) {
v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
"task has been aborted\n");