linux/drivers/gpu/drm/bridge
John Stultz 3587c85667 drm/bridge: adv7511: Re-write the i2c address before EDID probing
I've found that by just turning the chip on and off via the
POWER_DOWN register, I end up getting i2c_transfer errors on
HiKey.

Investigating further, it turns out that some of the register
state in hardware is getting lost, as the device registers are
reset when the chip is powered down.

Thus this patch simply re-writes the i2c address to the
ADV7511_REG_EDID_I2C_ADDR register to ensure its properly set
before we try to read the EDID data.

Cc: David Airlie <airlied@linux.ie>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-7-git-send-email-john.stultz@linaro.org
2017-01-19 09:16:58 +05:30
..
adv7511 drm/bridge: adv7511: Re-write the i2c address before EDID probing 2017-01-19 09:16:58 +05:30
analogix drm: bridge: Link encoder and bridge in core code 2016-12-18 16:31:45 +05:30
analogix-anx78xx.c drm/bridge: Call drm_connector_cleanup directly 2016-10-05 15:20:36 +02:00
analogix-anx78xx.h drm/bridge: Add Analogix anx78xx support 2016-05-12 11:32:14 +02:00
dumb-vga-dac.c drm: bridge: add support for TI ths8135 2016-12-14 10:03:08 +05:30
dw-hdmi-ahb-audio.c drm/bridge: dw-hdmi: Delete unnecessary assignment for the field "owner" 2016-08-23 11:34:26 -04:00
dw-hdmi-audio.h drm: bridge: add DesignWare HDMI I2S audio support 2016-11-24 14:27:15 +05:30
dw-hdmi-i2s-audio.c drm: bridge: add DesignWare HDMI I2S audio support 2016-11-24 14:27:15 +05:30
dw-hdmi.c drm: bridge: dw-hdmi: Assert SVSRET before resetting the PHY 2017-01-18 09:29:37 +05:30
dw-hdmi.h drm: bridge: dw-hdmi: Fix the name of the PHY reset macros 2017-01-18 09:29:37 +05:30
Kconfig tilcdc changes for v4.10 2016-12-01 09:26:55 +10:00
Makefile tilcdc changes for v4.10 2016-12-01 09:26:55 +10:00
nxp-ptn3460.c drm: Make the connector .detect() callback optional 2016-12-01 10:05:53 -05:00
parade-ps8622.c drm: Make the connector .detect() callback optional 2016-12-01 10:05:53 -05:00
sii902x.c drm/bridge: Add sii902x driver 2016-06-20 15:55:49 +02:00
sil-sii8620.c drm/bridge: fix platform_no_drv_owner.cocci warnings 2016-10-27 11:35:23 +05:30
sil-sii8620.h drm/bridge: add Silicon Image SiI8620 driver 2016-10-26 11:19:12 +05:30
tc358767.c drm: Make the connector .detect() callback optional 2016-12-01 10:05:53 -05:00
ti-tfp410.c drm/bridge: Add ti-tfp410 DVI transmitter driver 2016-11-30 14:17:14 +02:00