linux-kernel - [PATCH AUTOSEL 4.14 46/95] media: adv7842: when the EDID is cleared, unconfigure CEC as well

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Message-Id: <20190507053826.31622-46-sashal@kernel.org>
Date:   Tue,  7 May 2019 01:37:35 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Hans Verkuil <hans.verkuil@...co.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>,
        linux-media@...r.kernel.org
Subject: [PATCH AUTOSEL 4.14 46/95] media: adv7842: when the EDID is cleared, unconfigure CEC as well

From: Hans Verkuil <hans.verkuil@...co.com>

[ Upstream commit ab83203e181015b099720aff43ffabc1812e0fb3 ]

When there is no EDID the CEC adapter should be unconfigured as
well. So call cec_phys_addr_invalidate() when this happens.

Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>
Cc: <stable@...r.kernel.org>      # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/media/i2c/adv7842.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index f9c23173c9fa..dcce8d030e5d 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -799,8 +799,10 @@ static int edid_write_hdmi_segment(struct v4l2_subdev *sd, u8 port)
 	/* Disable I2C access to internal EDID ram from HDMI DDC ports */
 	rep_write_and_or(sd, 0x77, 0xf3, 0x00);
 
-	if (!state->hdmi_edid.present)
+	if (!state->hdmi_edid.present) {
+		cec_phys_addr_invalidate(state->cec_adap);
 		return 0;
+	}
 
 	pa = cec_get_edid_phys_addr(edid, 256, &spa_loc);
 	err = cec_phys_addr_validate(pa, &pa, NULL);
-- 
2.20.1