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Without this the kernel hangs during boot when HDMI is attached.
It looks like we get an overflow IRQ storm. overflow is related
to HDMI audio.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
(cherry picked from commit ab9e816efb07dcaec23d3c55d3db1773b745ae47)
(cherry picked from commit d2e0de0ea4c48d0cbbadc28ac4785bd0ed202ea4)
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The keepalive module variable allows to not go into a disconnected
state. Fix the case when keepalive is set to go to disconnect.
Add a precompiler directive which allows to only evaluate the HPD signal
for HDMI monitor detection. Default is to react on the status bits for
HPD and the TMDS signal line detection to detect an attached monitor.
While at it cleanup parameter documentation and whitespace.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
(cherry picked from commit b15fed911e022b383295cb5443872d427e756677)
(cherry picked from commit 6bf9ef90b27fea00ae27f719473a5b7fca30a72e)
(cherry picked from commit 2d67c557073a6e728cfe5888323b9aed79392b90)
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Signed-off-by: Daniel Kochmanski <dkochmanski@antmicro.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit 98b68aee3695ae898ef19aa547267fcdb69cf7eb)
(cherry picked from commit f6620779981e6aebe40e7a400568e454d6a7408f)
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When this boolean parameter is true, only add
CEA modes to modelist.
Signed-off-by: Robert Winkler <robert.winkler@boundarydevices.com>
Acked-by: Eric Nelson <eric.nelson@boundarydevices.com>
(cherry picked from commit a78fe11904ebd4d3f72438f8b14dfa4eaab7d638)
(cherry picked from commit d69533a9575de0aaeeaca19b4f5ed8ef794257a6)
[rebased to 4.9, use bool as data type]
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
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If enabled too early, a flood of interrupts can happen, and as
console_lock is held, you cannot see any messages being printed.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit 38c65caf872e5f9534b7812395224670dd56c297)
(cherry picked from commit 04abce77f44b3e61b0fe5db1b33109e68e6600bc)
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Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit db1100f05d89ef2d90c856dfe742e9748d25df10)
(cherry picked from commit de5231fc1c395c1b63f5aa81b818fc5fd5377568)
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Signed-off-by: Robert Winkler <robert.winkler@boundarydevices.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
(cherry picked from commit 6877ada3d15adf762cae8b7edce979a77ebc0313)
(cherry picked from commit 51394b5f2b7ecfcc87c43c41e630c3e49fce3003)
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HDCP function could work in other TVs
but it failed with Sony TV when run hdcp enable/disable stress test.
The TMDS clock is not detected by Sony TV.
The TV seems time sensitive for HDMI TMDS.
Add 20ms delay before TMDS enable make it work.
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
(cherry picked from commit cb8a41d3cce444ba9e7044637ab4499caf65799e)
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Fixed CID 17375, Unsigned compared against 0. Removed code with no effect.
Signed-off-by: Oliver Brown <oliver.brown@nxp.com>
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Some HDMI Sink may failed to work when running HDCP enable/disable
stress test. HDMI sink may not support change HDCP state on the fly.
So reset HDMI PHY and controller to resolve the issue.
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
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HDMI CEC clock have management in HDMI CEC driver,
so bypass CEC clock in HDMI driver.
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
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When using fb_find_mode from fbdev/core with a specified user more,
it will return a screeninfo structure with the pixclock corresponding to
a different refresh rate than the requested one. For example, for
1920x1080@60 it will return pixclock=5780. When we get the videmode for
this screeninfo, it will have a refresh of 59Hz, instead of 60Hz.
If we use this mode as default mode when EDID cannot be read, on a
monitor with fixed refresh rate of 60Hz, it won't work. Therefore, we
should save the default mode, the nearest mode from CEA modes defined by
our own driver (which will have the correct refresh rate and pixclock for
the requested resolution).
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
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When EDID read fails, the mxc_hdmi driver creates a default modelist
using a hard-coded list with CEA modes.
Every time the HDMI cable is plugged-in, it will destroy the current
modelist and recreate the list. The problem comes from fbcon, which
holds reference to current mode used for each framebuffer console. When
we destroy the modelist and send the new one, if the memory for the old
mode is overwritten it will try to find another mode, close to the old
one. Since the mode could be overwritten by something else there is a
high chance that the new selected mode to be different from the old one.
If the HDMI sink does not support the selected mode, IPU will fail to
deliver frames.
Since it's wrong to advertise as supported modes the modes from a
hard-coded list, just use one mode, which comes from cmdline.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
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The function mxc_hdmi_ioctl is passing kernel memory to user-space. The
case for HDMI_IOC_GET_CPU_TYPE is passing the memory directly, which is
not permitted. Fixed this, by using put_user().
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
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Add HDMI power supply management in hdmi driver.
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
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When HDCP running in repeater mode,
HDCP software workaround "HW_WA_HDCP_DC0" is working in
HDCP keepout window stop state.
It will cause HDCP compliance test 1B-01A failed.
So active HDCP keepout widows and 1B-01A is passed.
Signed-off-by: Sandor Yu <R01008@freescale.com>
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Forward imx_3.14.y IPU and display drivers to 4.1 kernel.
This includes IPU core driver, display driver, LDB and HDMI driver.
Signed-off-by: Sandor Yu <R01008@freescale.com>
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