[media] ths8200: Format adjustment

Closer inspection on exact transmitted format showed that
we needed to add 1 on vertical sync.

Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Martin Bugge <marbugge@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/i2c/ths8200.c b/drivers/media/i2c/ths8200.c
index bcacf52..f72561e 100644 (file)
--- a/drivers/media/i2c/ths8200.c
+++ b/drivers/media/i2c/ths8200.c
@@ -318,15 +318,15 @@ static void ths8200_setup(struct v4l2_subdev *sd, struct v4l2_bt_timings *bt)
                             (htotal(bt) >> 8) & 0x1f);
        ths8200_write(sd, THS8200_DTG2_HLENGTH_HDLY_LSB, htotal(bt));
 
-       /* v sync width transmitted */
-       ths8200_write(sd, THS8200_DTG2_VLENGTH1_LSB, (bt->vsync) & 0xff);
+       /* v sync width transmitted (must add 1 to get correct output) */
+       ths8200_write(sd, THS8200_DTG2_VLENGTH1_LSB, (bt->vsync + 1) & 0xff);
        ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0x3f,
-                            ((bt->vsync) >> 2) & 0xc0);
+                            ((bt->vsync + 1) >> 2) & 0xc0);
 
-       /* The pixel value v sync is asserted on */
+       /* The pixel value v sync is asserted on (must add 1 to get correct output) */
        ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0xf8,
-                            (vtotal(bt)>>8) & 0x7);
-       ths8200_write(sd, THS8200_DTG2_VDLY1_LSB, vtotal(bt));
+                            ((vtotal(bt) + 1) >> 8) & 0x7);
+       ths8200_write(sd, THS8200_DTG2_VDLY1_LSB, vtotal(bt) + 1);
 
        /* For progressive video vlength2 must be set to all 0 and vdly2 must
         * be set to all 1.
@@ -336,11 +336,11 @@ static void ths8200_setup(struct v4l2_subdev *sd, struct v4l2_bt_timings *bt)
        ths8200_write(sd, THS8200_DTG2_VDLY2_LSB, 0xff);
 
        /* Internal delay factors to synchronize the sync pulses and the data */
-       /* Experimental values delays (hor 4, ver 1) */
-       ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_MSB, (htotal(bt)>>8) & 0x1f);
-       ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_LSB, (htotal(bt) - 4) & 0xff);
+       /* Experimental values delays (hor 0, ver 0) */
+       ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_MSB, 0);
+       ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_LSB, 0);
        ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_MSB, 0);
-       ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_LSB, 1);
+       ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_LSB, 0);
 
        /* Polarity of received and transmitted sync signals */
        if (bt->polarities & V4L2_DV_HSYNC_POS_POL) {