Commit 76c97b0b authored by Eugen Hristev's avatar Eugen Hristev Committed by Mauro Carvalho Chehab
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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: default avatarEugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: default avatarJacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 9780baa0

drivers/media/platform/atmel/atmel-isc-base.c

+18 −0
Original line number Diff line number Diff line
@@ -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;