[PATCH AUTOSEL 5.4 017/205] media: ov6650: Fix default format not applied on device probe

From: Sasha Levin
Date: Thu Jan 16 2020 - 11:44:28 EST


From: Janusz Krzysztofik <jmkrzyszt@xxxxxxxxx>

[ Upstream commit 5439fa9263cb293e41168bc03711ec18c4f11cba ]

It is not clear what pixel format is actually configured in hardware on
reset. MEDIA_BUS_FMT_YUYV8_2X8, assumed on device probe since the
driver was intiially submitted, is for sure not the one.

Fix it by explicitly applying a known, driver default frame format just
after initial device reset.

Fixes: 2f6e2404799a ("[media] SoC Camera: add driver for OV6650 sensor")
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@xxxxxxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/media/i2c/ov6650.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
index bbf15644e989..af482620f94a 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -877,6 +877,11 @@ static int ov6650_video_probe(struct v4l2_subdev *sd)
ret = ov6650_reset(client);
if (!ret)
ret = ov6650_prog_dflt(client);
+ if (!ret) {
+ struct v4l2_mbus_framefmt mf = ov6650_def_fmt;
+
+ ret = ov6650_s_fmt(sd, &mf);
+ }
if (!ret)
ret = v4l2_ctrl_handler_setup(&priv->hdl);

@@ -1031,8 +1036,6 @@ static int ov6650_probe(struct i2c_client *client,
priv->rect.top = DEF_VSTRT << 1;
priv->rect.width = W_CIF;
priv->rect.height = H_CIF;
- priv->half_scale = false;
- priv->code = MEDIA_BUS_FMT_YUYV8_2X8;

/* Hardware default frame interval */
priv->tpf.numerator = GET_CLKRC_DIV(DEF_CLKRC);
--
2.20.1