* EXYNOS4: Atmel mXT touchscreen device on NURI board fails to initialise
@ 2012-01-20 10:18 Mitsyanko Igor
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From: Mitsyanko Igor @ 2012-01-20 10:18 UTC (permalink / raw)
To: jy0922.shim, kyungmin.park; +Cc: linux-samsung-soc, Dmitry Solodkiy
Good day.
It looks like Atmel MXT initialisation code on nuri board is broken. I
don't have a datasheet for this touchscreen, but from what I can see in
atmel mxt driver code(drivers/input/touchscreen/atmel_mxt_ts.c), I make
assumption that MXT must have a mandatory MXT_GEN_MESSAGE_T5 object. But
in structure mxt_init_vals (arch/arm/mach-exynos/mach-nuri.c) there are
no configuration data for this object. So mxt_probe() function in Atmel
MXT driver fails during mxt_make_highchg() when it tries to read
registers of GEN_MESSAGE_T5 object.
--
Mitsyanko Igor
ASWG, Moscow R&D center, Samsung Electronics
email:i.mitsyanko@samsung.com
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2012-01-20 10:18 EXYNOS4: Atmel mXT touchscreen device on NURI board fails to initialise Mitsyanko Igor
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