From 76c97b0bb842ae6a6dcb87785518ddf0dec89381 Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Mon, 13 Dec 2021 14:49:35 +0100 Subject: media: atmel: atmel-isc-base: add wb debug messages Add debug messages that make it easier to debug white balance algorithm. Signed-off-by: Eugen Hristev Reviewed-by: Jacopo Mondi Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/atmel/atmel-isc-base.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/media/platform/atmel/atmel-isc-base.c') diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c index 3a9e04741960..d92ffc07418f 100644 --- a/drivers/media/platform/atmel/atmel-isc-base.c +++ b/drivers/media/platform/atmel/atmel-isc-base.c @@ -1289,10 +1289,15 @@ static void isc_hist_count(struct isc_device *isc, u32 *min, u32 *max) if (!*min) *min = 1; + + v4l2_dbg(1, debug, &isc->v4l2_dev, + "isc wb: hist_id %u, hist_count %u", + ctrls->hist_id, *hist_count); } static void isc_wb_update(struct isc_ctrls *ctrls) { + struct isc_device *isc = container_of(ctrls, struct isc_device, ctrls); u32 *hist_count = &ctrls->hist_count[0]; u32 c, offset[4]; u64 avg = 0; @@ -1309,6 +1314,9 @@ static void isc_wb_update(struct isc_ctrls *ctrls) (u64)hist_count[ISC_HIS_CFG_MODE_GB]; avg >>= 1; + v4l2_dbg(1, debug, &isc->v4l2_dev, + "isc wb: green components average %llu\n", avg); + /* Green histogram is null, nothing to do */ if (!avg) return; @@ -1361,9 +1369,15 @@ static void isc_wb_update(struct isc_ctrls *ctrls) else gw_gain[c] = 1 << 9; + v4l2_dbg(1, debug, &isc->v4l2_dev, + "isc wb: component %d, s_gain %u, gw_gain %u\n", + c, s_gain[c], gw_gain[c]); /* multiply both gains and adjust for decimals */ ctrls->gain[c] = s_gain[c] * gw_gain[c]; ctrls->gain[c] >>= 9; + v4l2_dbg(1, debug, &isc->v4l2_dev, + "isc wb: component %d, final gain %u\n", + c, ctrls->gain[c]); } } @@ -1387,6 +1401,10 @@ static void isc_awb_work(struct work_struct *w) return; isc_hist_count(isc, &min, &max); + + v4l2_dbg(1, debug, &isc->v4l2_dev, + "isc wb mode %d: hist min %u , max %u\n", hist_id, min, max); + ctrls->hist_minmax[hist_id][HIST_MIN_INDEX] = min; ctrls->hist_minmax[hist_id][HIST_MAX_INDEX] = max; -- cgit