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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 <eugen.hristev@microchip.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Eugen Hristev 2021-12-13 14:49:35 +01:00 committed by Mauro Carvalho Chehab
parent 9780baa069
commit 76c97b0bb8
1 changed files with 18 additions and 0 deletions
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18
drivers/media/platform/atmel/atmel-isc-base.c
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@ -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;