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authorSylwester Nawrocki <s.nawrocki@samsung.com>2012-09-28 11:05:53 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-12-21 12:25:13 -0200
commita2fea0dfddf95b7f1e7adb3630c7d07a92cfb09b (patch)
tree707f2eb1135327cab3bd5c971be369cd72d7a862 /drivers/media/platform/s5p-fimc/mipi-csis.c
parentcd65a645a4f5e456607067734f9a11385c9dce7b (diff)
[media] s5p-csis: Add registers logging for debugging
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>
Diffstat (limited to 'drivers/media/platform/s5p-fimc/mipi-csis.c')
-rw-r--r--drivers/media/platform/s5p-fimc/mipi-csis.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-fimc/mipi-csis.c b/drivers/media/platform/s5p-fimc/mipi-csis.c
index 8ec7c3b79659..8a06f1402f37 100644
--- a/drivers/media/platform/s5p-fimc/mipi-csis.c
+++ b/drivers/media/platform/s5p-fimc/mipi-csis.c
@@ -383,6 +383,30 @@ err:
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)
{
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);
+ mutex_lock(&state->lock);
s5pcsis_log_counters(state, true);
+ if (debug && (state->flags & ST_POWERED))
+ dump_regs(state, __func__);
+ mutex_unlock(&state->lock);
return 0;
}

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