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drm/sun4i: Fix the high buffer address mask 

The highest 3bits of the 4 layers buffers are all part of the same
register. However, our mask computation was wrong, leading to all the
lowest register bits being removed when we use regmap_update_bits, which
will lead to the buffers being set to some random part of the RAM.

Fix our mask.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Maxime Ripard 2016-09-19 21:53:08 +02:00
parent e4192089fe
commit f0188ef830
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/sun4i/sun4i_backend.h
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@ -52,8 +52,8 @@
#define SUN4I_BACKEND_LAYFB_L32ADD_REG(l) (0x850 + (0x4 * (l)))
#define SUN4I_BACKEND_LAYFB_H4ADD_REG 0x860
#define SUN4I_BACKEND_LAYFB_H4ADD_MSK(l) GENMASK(3 + ((l) * 8), 0)
#define SUN4I_BACKEND_LAYFB_H4ADD(l, val) ((val) << ((l) * 8))
#define SUN4I_BACKEND_LAYFB_H4ADD_MSK(l) GENMASK(3 + ((l) * 8), (l) * 8)
#define SUN4I_BACKEND_LAYFB_H4ADD(l, val) ((val) << ((l) * 8))
#define SUN4I_BACKEND_REGBUFFCTL_REG 0x870
#define SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS BIT(1)