linux-kernel - [PATCH 5.1 336/405] media: ov7670: restore default settings after power-up

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Message-Id: <20190530030557.709730400@linuxfoundation.org>
Date:   Wed, 29 May 2019 20:05:34 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        Akinobu Mita <akinobu.mita@...il.com>,
        Lubomir Rintel <lkundrak@...sk>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.1 336/405] media: ov7670: restore default settings after power-up

[ Upstream commit 32ab688b280301f7cee9e547564cb74e33e06322 ]

Since commit 3d6a8fe25605 ("media: ov7670: hook s_power onto v4l2 core"),
the device is actually powered off while the video stream is stopped.

The frame format and framerate are restored right after power-up, but
restoring the default register settings is forgotten.

Fixes: 3d6a8fe25605 ("media: ov7670: hook s_power onto v4l2 core")

Cc: Jonathan Corbet <corbet@....net>
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Reviewed-by: Lubomir Rintel <lkundrak@...sk>
Tested-by: Lubomir Rintel <lkundrak@...sk>
Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/i2c/ov7670.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index a7d26b294eb58..e65693c2aad5f 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -1664,6 +1664,7 @@ static int ov7670_s_power(struct v4l2_subdev *sd, int on)
 
 	if (on) {
 		ov7670_power_on (sd);
+		ov7670_init(sd, 0);
 		ov7670_apply_fmt(sd);
 		ov7675_apply_framerate(sd);
 		v4l2_ctrl_handler_setup(&info->hdl);
-- 
2.20.1