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[media] s5p-csis: Add registers logging for debugging

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Dump registers contents together with the event counters state
in VIDIOC_LOG_STATUS ioctl.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2012-09-28 11:05:53 -03:00 committed by Mauro Carvalho Chehab
parent cd65a645a4
commit a2fea0dfdd
1 changed files with 28 additions and 0 deletions
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28
drivers/media/platform/s5p-fimc/mipi-csis.c
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@ -383,6 +383,30 @@ static int s5pcsis_clk_get(struct csis_state *state)
return -ENXIO; return -ENXIO;
} }
static void dump_regs(struct csis_state *state, const char *label)
{
struct {
u32 offset;
const char * const name;
} registers[] = {
{ 0x00, "CTRL" },
{ 0x04, "DPHYCTRL" },
{ 0x08, "CONFIG" },
{ 0x0c, "DPHYSTS" },
{ 0x10, "INTMSK" },
{ 0x2c, "RESOL" },
{ 0x38, "SDW_CONFIG" },
};
u32 i;
v4l2_info(&state->sd, "--- %s ---\n", label);
for (i = 0; i < ARRAY_SIZE(registers); i++) {
u32 cfg = s5pcsis_read(state, registers[i].offset);
v4l2_info(&state->sd, "%10s: 0x%08x\n", registers[i].name, cfg);
}
}
static void s5pcsis_start_stream(struct csis_state *state) static void s5pcsis_start_stream(struct csis_state *state)
{ {
s5pcsis_reset(state); s5pcsis_reset(state);
@ -583,7 +607,11 @@ static int s5pcsis_log_status(struct v4l2_subdev *sd)
{ {
struct csis_state *state = sd_to_csis_state(sd); struct csis_state *state = sd_to_csis_state(sd);
mutex_lock(&state->lock);
s5pcsis_log_counters(state, true); s5pcsis_log_counters(state, true);
if (debug && (state->flags & ST_POWERED))
dump_regs(state, __func__);
mutex_unlock(&state->lock);
return 0; return 0;
} }