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into drm-fixes
two tda9950 fixes.
Signed-off-by: Dave Airlie <[email protected]>
From: Russell King <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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The CEC_TX_STATUS_MAX_RETRIES should be set for errors only to
prevent the CEC framework from retrying the transmit. If the
transmit was successful, then don't set this flag.
Found by running 'cec-compliance -A' on a beaglebone box.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Russell King <[email protected]>
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Currently the check to see if the timeout has reached zero is incorrect
and the check is instead checking if the timeout is non-zero and not
zero, hence it will break out of the loop on the first iteration and
the msleep is never executed. Fix this by breaking from the loop when
timeout is zero.
Detected by CoverityScan, CID#1469404 ("Logically Dead Code")
Fixes: f0316f93897c ("drm/i2c: tda9950: add CEC driver")
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Russell King <[email protected]>
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In the quest to remove all stack VLA usage from the kernel[1], this
sets the buffer to maximum size and adds a sanity check.
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Cc: David Airlie <[email protected]>
Cc: Hans Verkuil <[email protected]>
Cc: Russell King <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
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Add a CEC driver for the TDA9950, which is a stand-alone I2C CEC device,
but is also integrated into HDMI transceivers such as the TDA9989 and
TDA19989.
The TDA9950 contains a command processor which handles retransmissions
and the low level bus protocol. The driver just has to read and write
the messages, and handle error conditions.
Reviewed-by: Hans Verkuil <[email protected]>
Signed-off-by: Russell King <[email protected]>
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