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drm/i915/bxt: Increase DDI buf idle timeout

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For BXT, DDI buf idle timeout delay needs to be increased to 16us.

Since this is a timeout value and we return as soon as the condition is
realized, no penalty incurred for other platforms.

v2:
- remove TIMEOUT macro used only at a single place (Daniel)

Suggested-by: Satheeshakrishna M <satheeshakrishna.m@intel.com>
Cc: Satheeshakrishna M <satheeshakrishna.m@intel.com>
Cc: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> (v1)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Vandana Kannan 2015-03-27 14:19:09 +02:00 committed by Daniel Vetter
parent 6c74c87f7c
commit 3449ca859a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_ddi.c
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@ -322,7 +322,7 @@ static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
uint32_t reg = DDI_BUF_CTL(port);
int i;
for (i = 0; i < 8; i++) {
for (i = 0; i < 16; i++) {
udelay(1);
if (I915_READ(reg) & DDI_BUF_IS_IDLE)
return;