From: Wolfram Sang <wsa@the-dreams.de>
To: dri-devel@lists.freedesktop.org,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-sh@vger.kernel.org, Daniel Vetter <daniel.vetter@ffwll.ch>,
Wolfram Sang <wsa@the-dreams.de>,
Magnus Damm <magnus.damm@gmail.com>,
Kuninori Morimoto <kuninori.morimoto.gx@gmail.com>
Subject: [PATCH v2 2/3] drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile
Date: Fri, 08 Jan 2016 21:56:49 +0000 [thread overview]
Message-ID: <1452290210-20629-3-git-send-email-wsa@the-dreams.de> (raw)
In-Reply-To: <1452290210-20629-1-git-send-email-wsa@the-dreams.de>
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
This register includes a counter which is decremented by the chip on I2C
failures. Also, it is reset when powering down.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Archit Taneja <architt@codeaurora.org>
---
drivers/gpu/drm/i2c/adv7511.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c
index db7435a4517fb4..e1756a452d6980 100644
--- a/drivers/gpu/drm/i2c/adv7511.c
+++ b/drivers/gpu/drm/i2c/adv7511.c
@@ -136,6 +136,7 @@ static bool adv7511_register_volatile(struct device *dev, unsigned int reg)
case ADV7511_REG_BKSV(3):
case ADV7511_REG_BKSV(4):
case ADV7511_REG_DDC_STATUS:
+ case ADV7511_REG_EDID_READ_CTRL:
case ADV7511_REG_BSTATUS(0):
case ADV7511_REG_BSTATUS(1):
case ADV7511_REG_CHIP_ID_HIGH:
--
2.1.4
next prev parent reply other threads:[~2016-01-08 21:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-08 21:56 [PATCH v2 0/3] drm: adv7511: edid read fixes Wolfram Sang
2016-01-08 21:56 ` [PATCH v2 1/3] drm: adv7511: really enable interrupts for EDID detection Wolfram Sang
2016-02-01 13:29 ` Wolfram Sang
2016-01-08 21:56 ` Wolfram Sang [this message]
2016-01-08 21:56 ` [PATCH v2 3/3] drm: adv7511: it's HPD, not HDP Wolfram Sang
2016-02-01 13:31 ` [PATCH v2 0/3] drm: adv7511: edid read fixes Wolfram Sang
2016-02-01 22:52 ` Laurent Pinchart
2016-02-03 15:05 ` Wolfram Sang
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