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drm/i915: Split write of pattern to DP reg from intel_dp_set_link_train

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Split the register write with the new link training pattern out of
intel_dp_set_link_train(), so that the i915 specific code is in a
separate function.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1445594525-7174-3-git-send-email-ander.conselvan.de.oliveira@intel.com
This commit is contained in:
Ander Conselvan de Oliveira
2015-10-23 13:01:45 +03:00
parent f4eb692e8e
commit e9c176d511
1 changed files with 13 additions and 5 deletions
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18
drivers/gpu/drm/i915/intel_dp.c
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@@ -3594,20 +3594,28 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp)
intel_dp->DP = (intel_dp->DP & ~mask) | signal_levels;
}
static bool
intel_dp_set_link_train(struct intel_dp *intel_dp,
uint8_t dp_train_pat)
static void
intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
uint8_t dp_train_pat)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv =
to_i915(intel_dig_port->base.base.dev);
uint8_t buf[sizeof(intel_dp->train_set) + 1];
int ret, len;
_intel_dp_set_link_train(intel_dp, &intel_dp->DP, dp_train_pat);
I915_WRITE(intel_dp->output_reg, intel_dp->DP);
POSTING_READ(intel_dp->output_reg);
}
static bool
intel_dp_set_link_train(struct intel_dp *intel_dp,
uint8_t dp_train_pat)
{
uint8_t buf[sizeof(intel_dp->train_set) + 1];
int ret, len;
intel_dp_program_link_training_pattern(intel_dp, dp_train_pat);
buf[0] = dp_train_pat;
if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) ==