From a2fea0dfddf95b7f1e7adb3630c7d07a92cfb09b Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Fri, 28 Sep 2012 11:05:53 -0300 Subject: [PATCH] [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 Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-fimc/mipi-csis.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/media/platform/s5p-fimc/mipi-csis.c b/drivers/media/platform/s5p-fimc/mipi-csis.c index 8ec7c3b..8a06f14 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; } -- 2.7.4