drm/i2c: tda998x: don't read write-only registers

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This patch takes care of the write-only registers of the tda998x.

The registers SOFTRESET, TBG_CNTRL_0 and TBG_CNTRL_1 have all bits
cleared after reset, so, they may be fully re-written.

The register MAT_CONTRL is set to
	MAT_CONTRL_MAT_BP | MAT_CONTRL_MAT_SC(1)
after reset, so, it may be fully set again to this value.

Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

...

This commit is contained in:

Jean-Francois Moine 2014-01-25 18:14:42 +01:00 • committed by Russell King

parent 73d5e253ac

commit 81b53a166f

1 changed files with 24 additions and 22 deletions

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drivers/gpu/drm/i2c/tda998x_drv.c

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