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drm/nouveau: use mdelay instead of large udelay constants

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ARM cannot handle udelay for more than 2 miliseconds, so we
should use mdelay instead for those.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@gmail.com>
This commit is contained in:
Arnd Bergmann 2013-05-31 22:22:40 +00:00 committed by Dave Airlie
parent 1ed7fad6db
commit b06f6a9d06
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c
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@ -51,7 +51,8 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval)
const u32 doff = (or * 0x800);
int load = -EINVAL;
nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval);
udelay(9500);
mdelay(9);
udelay(500);
nv_wr32(priv, 0x61a00c + doff, 0x80000000);
load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27;
nv_wr32(priv, 0x61a00c + doff, 0x00000000);